diff --git a/.clang-format b/.clang-format
index f9f2c5e..d32a74e 100644
--- a/.clang-format
+++ b/.clang-format
@@ -22,8 +22,8 @@ BreakBeforeTernaryOperators:	true
 BreakConstructorInitializersBeforeComma:	true
 AllowAllArgumentsOnNextLine: true
 AllowAllParametersOfDeclarationOnNextLine: true
-ColumnLimit: 90
-LambdaBodyIndentation: OuterScope
+ColumnLimit: 120
+LambdaBodyIndentation: Signature
 RemoveBracesLLVM: true
 SeparateDefinitionBlocks: Always
 CommentPragmas:	'^ IWYU pragma:'
@@ -51,7 +51,7 @@ AllowShortBlocksOnASingleLine: Never
 Cpp11BracedListStyle:	true
 DerivePointerAlignment:	true
 DisableFormat:	false
-ExperimentalAutoDetectBinPacking:	true
+ExperimentalAutoDetectBinPacking:	false
 ForEachMacros:	[ foreach, Q_FOREACH, BOOST_FOREACH ]
 IncludeCategories:
   - Regex:	'^"(llvm|llvm-c|clang|clang-c)/'
@@ -68,11 +68,11 @@ MacroBlockBegin:	''
 MacroBlockEnd:	''
 MaxEmptyLinesToKeep:	1
 NamespaceIndentation: All
-PenaltyBreakComment:	90
-PenaltyBreakFirstLessLess:	90
-PenaltyBreakString:	90
-PenaltyExcessCharacter:	90
-PenaltyReturnTypeOnItsOwnLine:	90
+PenaltyBreakComment:	120
+PenaltyBreakFirstLessLess:	120
+PenaltyBreakString:	120
+PenaltyExcessCharacter:	120
+PenaltyReturnTypeOnItsOwnLine:	120
 PointerAlignment:	Middle
 ReflowComments:	true
 SortIncludes:	"Never"
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 2c89d13..0a27934 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -29,7 +29,7 @@ jobs:
         
       - name: Install dependencies
         run:
-          brew install bison flex
+          brew install bison flex llvm
       
       - name: build
         run: xmake -y
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc68788..0bdd17a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,65 +5,118 @@
 # project
 cmake_minimum_required(VERSION 3.15.0)
 cmake_policy(SET CMP0091 NEW)
+set(CMAKE_C_COMPILER "/usr/bin/x86_64-w64-mingw32-gcc")
+set(CMAKE_CXX_COMPILER "/usr/bin/x86_64-w64-mingw32-g++")
 project(swallow VERSION 0.0.1 LANGUAGES CXX)
 
 # target
-set(CMAKE_C_COMPILER "/usr/bin/clang-18")
-set(CMAKE_CXX_COMPILER "/usr/bin/clang++-18")
-add_library(base SHARED "")
-set_target_properties(base PROPERTIES OUTPUT_NAME "base")
-set_target_properties(base PROPERTIES LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/linux/x86_64/release")
-target_compile_options(base PRIVATE
+add_executable(swa "")
+set_target_properties(swa PROPERTIES OUTPUT_NAME "swa")
+set_target_properties(swa PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/linux/x86_64/release")
+add_dependencies(swa swc swi)
+target_include_directories(swa PRIVATE
+    compiler
+)
+target_compile_options(swa PRIVATE
+    $<$<COMPILE_LANGUAGE:C>:-m64>
+    $<$<COMPILE_LANGUAGE:CXX>:-m64>
+    $<$<COMPILE_LANGUAGE:C>:-DNDEBUG>
+    $<$<COMPILE_LANGUAGE:CXX>:-DNDEBUG>
+)
+set_target_properties(swa PROPERTIES CXX_EXTENSIONS OFF)
+target_compile_features(swa PRIVATE cxx_std_20)
+if(MSVC)
+    target_compile_options(swa PRIVATE $<$<CONFIG:Release>:-O2>)
+else()
+    target_compile_options(swa PRIVATE -O3)
+endif()
+if(MSVC)
+else()
+    target_compile_options(swa PRIVATE -fvisibility=hidden)
+endif()
+if(MSVC)
+    set_property(TARGET swa PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+endif()
+target_link_libraries(swa PRIVATE
+    swi
+    swc
+    pthread
+)
+target_link_directories(swa PRIVATE
+    build/linux/x86_64/release
+)
+target_link_options(swa PRIVATE
+    -m64
+)
+if(Clang)
+target_link_options(swa PRIVATE
+    -lc++abi
+)
+endif()
+target_sources(swa PRIVATE
+    cli/main.cpp
+)
+
+# target
+add_library(swallow_base STATIC "")
+set_target_properties(swallow_base PROPERTIES OUTPUT_NAME "swallow_base")
+set_target_properties(swallow_base PROPERTIES ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/linux/x86_64/release")
+target_compile_options(swallow_base PRIVATE
     $<$<COMPILE_LANGUAGE:C>:-m64>
     $<$<COMPILE_LANGUAGE:CXX>:-m64>
     $<$<COMPILE_LANGUAGE:C>:-DNDEBUG>
     $<$<COMPILE_LANGUAGE:CXX>:-DNDEBUG>
 )
-set_target_properties(base PROPERTIES CXX_EXTENSIONS OFF)
-target_compile_features(base PRIVATE cxx_std_20)
+set_target_properties(swallow_base PROPERTIES CXX_EXTENSIONS OFF)
+target_compile_features(swallow_base PRIVATE cxx_std_20)
 if(MSVC)
-    target_compile_options(base PRIVATE $<$<CONFIG:Release>:-Ox -fp:fast>)
+    target_compile_options(swallow_base PRIVATE $<$<CONFIG:Release>:-O2>)
 else()
-    target_compile_options(base PRIVATE -O3)
+    target_compile_options(swallow_base PRIVATE -O3)
 endif()
 if(MSVC)
-    set_property(TARGET base PROPERTY
+else()
+    target_compile_options(swallow_base PRIVATE -fvisibility=hidden)
+endif()
+if(MSVC)
+    set_property(TARGET swallow_base PROPERTY
         MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
 endif()
-target_link_options(base PRIVATE
+target_link_options(swallow_base PRIVATE
     -m64
 )
-target_sources(base PRIVATE
+target_sources(swallow_base PRIVATE
     base/base.cpp
 )
 
 # target
-set(CMAKE_C_COMPILER "/usr/bin/clang-18")
-set(CMAKE_CXX_COMPILER "/usr/bin/clang++-18")
-add_executable(swc "")
+add_library(swc STATIC "")
 set_target_properties(swc PROPERTIES OUTPUT_NAME "swc")
-set_target_properties(swc PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/linux/x86_64/release")
-add_dependencies(swc base)
+set_target_properties(swc PROPERTIES ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/linux/x86_64/release")
 target_include_directories(swc PRIVATE
     compiler
-    compiler/ast
-    compiler/type
-    compiler/lexer
-    compiler/parser
-    compiler/diagnostics
-    compiler/utils
+)
+target_include_directories(swc SYSTEM PRIVATE
+    /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include
+    /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include
+    /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include
 )
 target_compile_options(swc PRIVATE
     $<$<COMPILE_LANGUAGE:C>:-m64>
     $<$<COMPILE_LANGUAGE:CXX>:-m64>
     $<$<COMPILE_LANGUAGE:C>:-DNDEBUG>
     $<$<COMPILE_LANGUAGE:CXX>:-DNDEBUG>
+)
+if(Clang)
+target_compile_options(swc PRIVATE
     $<$<COMPILE_LANGUAGE:CXX>:-stdlib=libc++>
 )
+endif()
 set_target_properties(swc PROPERTIES CXX_EXTENSIONS OFF)
 target_compile_features(swc PRIVATE cxx_std_20)
 if(MSVC)
-    target_compile_options(swc PRIVATE $<$<CONFIG:Release>:-Ox -fp:fast>)
+    target_compile_options(swc PRIVATE $<$<CONFIG:Release>:-O2>)
 else()
     target_compile_options(swc PRIVATE -O3)
 endif()
@@ -76,42 +129,45 @@ if(MSVC)
         MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
 endif()
 target_link_libraries(swc PRIVATE
-    c++
-    base
-)
-target_link_directories(swc PRIVATE
-    build/linux/x86_64/release
+    pthread
 )
 target_link_options(swc PRIVATE
     -m64
 )
+if(Clang)
+target_link_options(swc PRIVATE
+    -lc++abi
+)
+endif()
 target_sources(swc PRIVATE
     compiler/compiler.cpp
-    compiler/parser/parser.cpp
-    compiler/parser/bison_parser.cpp
-    compiler/type/dump.cpp
-    compiler/type/environment.cpp
-    compiler/type/type.cpp
-    compiler/diagnostics/reporter.cpp
+    compiler/ast/ast.cpp
+    compiler/ast/dump.cpp
+    compiler/ast/gmachine.cpp
+    compiler/ast/type.cpp
     compiler/diagnostics/diagnostics.cpp
     compiler/diagnostics/utils.cpp
-    compiler/g-machine/instruction.cpp
-    compiler/g-machine/binop.cpp
-    compiler/g-machine/environment.cpp
+    compiler/diagnostics/reporter.cpp
+    compiler/gmachine/binop.cpp
+    compiler/gmachine/environment.cpp
+    compiler/gmachine/instruction.cpp
+    compiler/ir/context.cpp
     compiler/lexer/flex_lexer.cpp
     compiler/lexer/lexer.cpp
-    compiler/ast/ast.cpp
-    compiler/ast/g-machine.cpp
-    compiler/ast/dump.cpp
-    compiler/ast/type.cpp
+    compiler/parser/bison_parser.cpp
+    compiler/parser/parser.cpp
+    compiler/runtime/node.cpp
+    compiler/runtime/runtime.cpp
+    compiler/runtime/stack.cpp
+    compiler/type/dump.cpp
+    compiler/type/environment.cpp
+    compiler/type/type.cpp
 )
 
 # target
-set(CMAKE_C_COMPILER "/usr/bin/clang-18")
-set(CMAKE_CXX_COMPILER "/usr/bin/clang++-18")
-add_executable(swi "")
+add_library(swi STATIC "")
 set_target_properties(swi PROPERTIES OUTPUT_NAME "swi")
-set_target_properties(swi PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/linux/x86_64/release")
+set_target_properties(swi PROPERTIES ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/linux/x86_64/release")
 add_dependencies(swi swc)
 target_compile_options(swi PRIVATE
     $<$<COMPILE_LANGUAGE:C>:-m64>
@@ -122,7 +178,7 @@ target_compile_options(swi PRIVATE
 set_target_properties(swi PROPERTIES CXX_EXTENSIONS OFF)
 target_compile_features(swi PRIVATE cxx_std_20)
 if(MSVC)
-    target_compile_options(swi PRIVATE $<$<CONFIG:Release>:-Ox -fp:fast>)
+    target_compile_options(swi PRIVATE $<$<CONFIG:Release>:-O2>)
 else()
     target_compile_options(swi PRIVATE -O3)
 endif()
@@ -135,7 +191,8 @@ if(MSVC)
         MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
 endif()
 target_link_libraries(swi PRIVATE
-    base
+    swc
+    pthread
 )
 target_link_directories(swi PRIVATE
     build/linux/x86_64/release
@@ -143,6 +200,11 @@ target_link_directories(swi PRIVATE
 target_link_options(swi PRIVATE
     -m64
 )
+if(Clang)
+target_link_options(swi PRIVATE
+    -lc++abi
+)
+endif()
 target_sources(swi PRIVATE
     repl/main.cpp
 )
diff --git a/README b/README
deleted file mode 100644
index 56d8c7f..0000000
--- a/README
+++ /dev/null
@@ -1,55 +0,0 @@
-*  Swallow
-*  A minimalist functional programming language
-*  Copyright (c) 2023 Muqiu Han
-*  
-*  This project is built using xmake: https://xmake.io/
-*  
-*  FAQ: https://github.com/muqiuhan/Swallow/blob/main/FAQ
-*  Issues: https://github.com/muqiuhan/Swallow/issues
-*  Contribution: https://github.com/muqiuhan/Swallow/pulls
-
-
-To build and run with xmake:
-
-    setup: Install the xmake, flex and bison
-    To build:   xmake build
-    To run:     xmake run
-    To install: xmake install
-
-
-Features
-----------
-o- Typechecking
-o- Pattern Matching
-o- Garbage Collection
-o- Polymorphism
-
-LICENSE
-----------
-Copyright (c) 2023 Muqiu Han
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
-
-    * Redistributions of source code must retain the above copyright notice,
-      this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright notice,
-      this list of conditions and the following disclaimer in the documentation
-      and/or other materials provided with the distribution.
-    * Neither the name of Terifo nor the names of its contributors
-      may be used to endorse or promote products derived from this software
-      without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
diff --git a/README.md b/README.md
index c1409b1..1d6dd2b 100644
--- a/README.md
+++ b/README.md
@@ -26,20 +26,30 @@
 - Build & Install
   - > This project provides makefile, CMakeLists.txt, which can be built in an environment without xmake.
   - > Setup: Install the [xmake](xmake.io)
-  - To build:   xmake build
+  - To build:   `xmake f --toolchain=gcc -m release -y && xmake build -j$(expr $(nproc) / 2)`
+  > or clang `xmake f --toolchain=clang -m release -y && xmake build -j$(expr $(nproc) / 2)`
   - To run:     xmake run
   - To install: xmake install
 
-
+  - Cross-compile to windows or other platforms on Linux
+    - Setup: Install the [llvm](https://apt.llvm.org/)
+    - Build: `xmake f --toolchain=mingw -m release -y && xmake build -j$(expr $(nproc) / 2)`
+    > If the LLVM header files cannot be found, you can manually run `ln -s` to the corresponding directory of mingw, for example:
+    ```
+    ln -s /usr/include/llvm /usr/lib64/gcc/x86_64-w64-mingw32/13.2.0/include
+    
+    ln -s /usr/include/llvm-c /usr/lib64/gcc/x86_64-w64-mingw32/13.2.0/include
+    ```
 - Tools
   - [XMake: A cross-platform build utility based on Lua](https://xmake.io/#/)
   - [GNU Bison: A general-purpose parser generator](https://github.com/akimd/bison)
   - [Flex:  The Fast Lexical Analyzer - scanner generator for lexing in C and C++](https://github.com/westes/flex)
 
 - Library/Frameworks
-  - [optional: C++11/14/17 std::optional with functional-style extensions and reference support](https://github.com/TartanLlama/optional)
-  - [result: Result<T, E> for Modern C++](https://github.com/p-ranav/result)
-  
+  - [llvm: LLVM project](https://github.com/llvm/llvm-project)
+  - [tl_optional:  C++11/14/17 std::optional with functional-style extensions and reference support](https://github.com/TartanLlama/optional)
+  - [tl_expected: C++11/14/17 std::expected with functional-style extensions ](https://github.com/TartanLlama/expected/)
+  - [spdlog: Fast C++ logging library](https://github.com/gabime/spdlog)
 
 - REFERENCE
   - [Theory of computation](https://en.wikipedia.org/wiki/Theory_of_computation)
diff --git a/TAGS b/TAGS
deleted file mode 100644
index 9c5f348..0000000
--- a/TAGS
+++ /dev/null
@@ -1,2723 +0,0 @@
-
-.git/hooks/applypatch-msg.sample,18
-commitmsg=13,367
-
-.git/hooks/fsmonitor-watchman.sample,740
-my ($version, $last_update_token)($version, $last_update_token
19,619
-my $git_work_tree git_work_tree
30,902
-my $retry retry
32,942
-my $json_pkg;json_pkg
34,958
-sub launch_watchman 46,1105
-	my $o o
47,1127
-sub output_result 53,1239
-	my ($clockid, @files)($clockid, @files
54,1259
-	local $,65,1514
-sub watchman_clock 69,1550
-	my $response response
70,1571
-sub watchman_query 77,1778
-	my $pid pid
78,1799
-	my $last_update_line last_update_line
89,2316
-	my $query query
94,2502
-	my $response response
108,2826
-sub is_work_tree_watched 123,3285
-	my ($output)($output
124,3312
-	my $error error
125,3332
-		my $response response
128,3478
-		my $o o
144,4158
-sub get_working_dir 163,4500
-	my $working_dir;working_dir
164,4522
-
-.git/hooks/pre-applypatch.sample,18
-precommit=12,313
-
-.git/hooks/pre-push.sample,15
-remote=22,768
-
-.git/hooks/pre-rebase.sample,16
-publish=18,587
-
-.git/hooks/pre-receive.sample,12
-		i=22,520
-
-.git/hooks/prepare-commit-msg.sample,24
-COMMIT_MSG_FILE=23,857
-
-.git/hooks/push-to-checkout.sample,15
-commit=21,927
-
-.git/hooks/sendemail-validate.sample,78
-validate_cover_letter 25,887
-validate_patch 31,998
-validate_series 40,1200
-
-.git/hooks/update.sample,78
-refname=28,929
-allowunannotated=46,1315
-zero=63,1921
-	newrev_type=65,2017
-
-.git/description,24
-Unnamed repository;1,0
-
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-
-.git/objects/pack/pack-252cc42187dba9eb9e7479580c0f96d43ca20a5f.idx,412
-����S巴�<�;���sd�j���b�e����w�5�$��g�Q�Dmّ_�����(�ة�oש�	�f����+ܤ���7Q�ռ�I6��Y.�C��X��\�y0X̪������pn�.�	��"x�x
8,2161
-�3	i֮���|�PĕP�
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-K�
-�
-F#{�|}qP]qP
25,3094
-����a�UV���a�UV��
28,3757
-��T����p�g��~��P��o�*�}o��|�_�����^ni3����.Ʒ�������t.�qC�]�K�:����*�!A��Ϋ����7��\�L���ޔ�1b�ޙ*���y+*�&AA
34,4985
-
-.git/config,30
-	repositoryformatversion 2,7
-
-.git/index,11
-R]R
3,765
-
-CMakeLists.txt,30
-cmake_minimum_required(6,128
-
-LICENSE,15
-Copyright 1,0
-
-README,19
-*  Copyright 3,59
-
-README.md,16
-<div align=1,0
-
-build.ninja,30
-ninja_required_version 5,118
-
-compiler/ast/ast.cpp,130
-namespace swallow::compiler::ast39,1789
-  void dump(58,2210
-namespace swallow::compiler::type75,2640
-  void typecheck(77,2676
-
-compiler/ast/ast.hpp,813
-#define SWALLOW_COMPILER_AST_AST_H31,1623
-namespace swallow::compiler::ast45,1950
-  class AST47,1985
-    const yy::location Location;50,2011
-    explicit AST(54,2084
-      const noexcept -> utils::Result<utils::Result
59,2309
-  class Pattern68,2677
-    const yy::location Location;73,2750
-    explicit Pattern(75,2784
-  class Branch84,3112
-    const yy::location Location;89,3183
-    const Pattern::Ptr Patt;90,3216
-    const AST::Ptr Expr;91,3245
-    Branch(93,3271
-  class Constructor98,3431
-    const std::string Name;103,3512
-    const std::vector<std::string> Types;104,3540
-    const yy::location Location;105,3582
-    Constructodump::dumpIndent
-  class Definition113,3815
-    const yy::location Location;118,3894
-    explicit Definition(120,3928
-namespace swallow::compiler::type349,10979
-
-compiler/ast/dump.cpp,365
-namespace swallow::compiler::ast34,1645
-  static void printIndent(36,1680
-  void Int::dump(dump
42,1795
-  void LID::dump(dump
48,1950
-  void UID::dump(dump
54,2102
-  void Binop::dump(dump
60,2254
-  void Application::dump(dump
72,2524
-  void Match::dump(dump
83,2761
-  void PatternVariable::dump(dump
100,3112
-  void PatternConstructor::dump(dump
105,3203
-
-compiler/ast/g-machine.cpp,272
-namespace swallow::compiler::ast37,1780
-  void Int::compile(compile
39,1815
-  void LID::compile(compile
45,2018
-  void UID::compile(compile
56,2459
-    Application::compile(compile
63,2669
-  void Binop::compile(compile
67,2831
-  void Match::compile(compile
79,3309
-
-compiler/ast/type.cpp,539
-namespace swallow::compiler::ast42,1834
-    -> Result<Result
47,1999
-    -> Result<Result
54,2229
-    -> Result<Result
67,2762
-    -> Result<Result
79,3284
-    const noexcept -> Result<Result
144,5715
-    -> Result<Result
193,7545
-  void PatternVariable::match(match
256,9932
-    PatternConstructor::match(match
263,10147
-  void Fn::scanDefinitionType(scanDefinitionType
319,12281
-  void Fn::typecheck(typecheck
334,12822
-  void Data::scanDefinitionType(scanDefinitionType
375,14447
-  void Data::typecheck(typecheck
391,15080
-
-compiler/compiler.cpp,48
-auto main(int argc, char **argv) -> int38,1727
-
-compiler/compiler.h,187
-#define SWALLOW_COMPILER_COMPILER_H31,1624
-  class CompileUnit39,1730
-    const std::string FileValue;42,1764
-    const std::string FilePath;43,1797
-    explicit CompileUnit(47,1878
-
-compiler/diagnostics/LICENSE,519
-   TERMS AND CONDITIONS FOR USE,5,158
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION,5,158
-          Derivative Works a copy of this License; and95,5260
-          documentation, if provided along with the Derivative Works; or,113,6244
-          within a display generated by the Derivative Works,114,6318
-   Unless required by applicable law or agreed to in writing,197,11036
-   distributed under the License is distributed on an "AS IS" BASIS,198,11107
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,199,11176
-
-compiler/diagnostics/code.hpp,720
-#define SWALLOW_COMPILER_DIAGNOSTICS_CODE_HPP31,1634
-namespace swallow::compiler::diagnostics34,1700
-  enum Code 37,1744
-    UNKNOWN,39,1771
-    PARSING,40,1784
-    LID_NOT_DECLARED,41,1797
-    UID_NOT_DECLARED,42,1819
-    EXPR_TYPE_CHECKING_FAILED,43,1841
-    BINOP_NOT_DECLARED,44,1872
-    BINOP_TYPE_MISMATCH,45,1896
-    APPLICATION_TYPE_MISMATCH,46,1921
-    MATCH_EXPR_TYPE_CHECKING_FAILED,47,1952
-    MATCH_EXPR_BRANCHE_TYPE_CONFLICTS,48,1989
-    MATCH_EXPR_CURRENT_BRANCHE_TYPE_CHECKING_FAILED,49,2028
-    MATCH_NON_DATA_TYPE,50,2081
-    PATTERN_CONSTRUCTOR_IS_NOT_FUNCTION,51,2106
-    PATTERN_MISMATCH,52,2147
-    FUNCTION_BODY_TYPE_CHECKING_FAILED,53,2169
-    CONSTRUCTOR_NOT_DECLARED,54,2209
-
-compiler/diagnostics/diagnostics.h,3948
-#define SWALLOW_COMPILER_DIAGNOSTICS_DIAGNOSTICS_H2,51
-#define COLOR_BY_TYPE(10,197
-#define COLOR_RGB(12,339
-#define assertm(14,419
-  enum class ReportType19,516
-    ERROR,21,544
-    INFO,22,555
-    WARNING,23,565
-  enum class ColorType30,710
-    DEFAULT,32,737
-    RED,33,750
-    GREEN,34,759
-    BLUE,35,770
-    ORANGE,36,780
-    YELLOW,37,792
-    AQUA38,804
-  class Span52,1110
-    [[nodiscard]] auto relative_to(const Span &span) const -> Span;59,1217
-    [[nodiscard]] auto is_inside_span(const Span &span) const -> bool;61,1286
-    [[nodiscard]] auto get_start_index() const -> size_t;63,1358
-    [[nodiscard]] auto get_details() const -> Details 65,1417
-    [[nodiscard]] auto get_end_index() const -> size_t;67,1475
-    [[nodiscard]] auto get_width() const -> size_t;71,1575
-    size_t start_index_;74,1639
-    Details *details_;details_
75,1664
-    size_t end_index_;76,1687
-  class Label79,1716
-    [[nodiscard]] auto get_color() const -> ColorType;90,1989
-    [[nodiscard]] auto get_line() const -> size_t;92,2045
-    std::optional<std::string> message_;95,2108
-    ColorType color_;96,2149
-    size_t line_;97,2171
-    Span span_;98,2189
-  class LabelBuilder101,2211
-    auto build() -> Label;112,2451
-    std::optional<std::string> message_;115,2490
-    std::optional<ColorType> color_;116,2531
-    std::optional<Span> span_;117,2568
-  struct AscendingLabels120,2605
-    auto operator()(const Label *first, const Label *second) const -> bool;122,2634
-  struct DescendingLabels125,2716
-    auto operator()(const Label *first, const Label *second) const -> bool;127,2746
-  class Details130,2828
-    [[nodiscard]] auto get_line_source(const Span &span) const -> std::string;135,2910
-    [[nodiscard]] auto get_label_line(const Label &label) const -> size_t;137,2990
-    std::vector<std::shared_ptr<Span>> line_spans_;147,3309
-    std::string source_;148,3361
-    std::string path_;149,3386
-  class LabelGroup154,3461
-               const std::string &spaces_prefix) const -> void;160,3589
-                                   const std::string &spaces_prefix) -> void;165,3867
-                                   const Labels &labels) const -> void;168,4027
-      find_label_levels(const Labels &labels) -> std::vector<std::vector
171,4130
-      find_remove_overlapping_labels(Labels &labels) -> Labels;174,4231
-    [[nodiscard]] auto find_labels_in_line(size_t line_index) const -> Labels;176,4296
-    [[nodiscard]] auto get_first_label() const -> const Label 178,4376
-    [[nodiscard]] auto get_details() const -> Details 182,4504
-    [[nodiscard]] auto get_last_label() const -> const Label 184,4562
-    const Label *first_label_;first_label_
187,4638
-    const Label *last_label_;last_label_
188,4669
-    Details *details_;details_
189,4699
-    Labels labels_;190,4722
-  class FileGroup193,4748
-               const std::string &spaces_prefix) const -> void;199,4866
-    [[nodiscard]] auto get_biggest_displayed_number() const -> size_t;201,4931
-    [[nodiscard]] auto get_details() const -> Details 206,5094
-    std::vector<LabelGroup> label_groups_;209,5163
-    Details *details_;details_
210,5206
-  class Report213,5235
-    auto print(std::ostream &output) const -> void;219,5399
-    [[nodiscard]] auto find_file_groups() const -> std::vector<std::vector
221,5452
-    [[nodiscard]] auto get_type() const -> ReportType;229,5750
-    [[nodiscard]] auto get_code() const -> size_t;231,5806
-    std::optional<std::string> note_;234,5869
-    std::vector<Label> labels_;235,5907
-    std::string message_;236,5939
-    ReportType type_;237,5965
-    size_t code_;238,5987
-  class ReportBuilder241,6011
-    auto build() -> Report;256,6375
-    std::optional<std::string> message_;259,6415
-    std::optional<std::string> note_;260,6456
-    std::optional<ReportType> type_;261,6494
-    std::optional<size_t> code_;262,6531
-    std::vector<Label> labels_;263,6564
-
-compiler/diagnostics/reporter.cpp,49
-namespace swallow::compiler::diagnostics35,1675
-
-compiler/diagnostics/reporter.hpp,263
-#define SWALLOW_COMPILER_DIAGNOSTICS_REPORTER_H31,1636
-namespace swallow::compiler::diagnostics38,1809
-  class Reporter40,1852
-    Details Detail;42,1873
-    explicit Reporter(47,1953
-             const std::uint32_t &code) -> utils::Err<utils::Err
54,2228
-
-compiler/diagnostics/termcolor.hpp,1435
-#define SWALLOW_COMPILER_DIAGNOSTICS_TERMCOLOR_HPP13,324
-#define TERMCOLOR_TARGET_WINDOWS21,571
-#define TERMCOLOR_TARGET_POSIX24,732
-#define TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES32,1058
-#define TERMCOLOR_AUTODETECTED_IMPLEMENTATION33,1102
-#define TERMCOLOR_USE_WINDOWS_API35,1188
-#define TERMCOLOR_AUTODETECTED_IMPLEMENTATION36,1222
-namespace termcolor49,1558
-  namespace _internal53,1664
-    inline auto colorize_index() -> int;56,1691
-    inline auto get_standard_stream(const std::ostream &stream) -> FILE 57,1732
-    inline auto get_standard_stream(const std::wostream &stream) -> FILE 58,1807
-    auto is_colorized(std::basic_ostream<CharT> &stream) -> bool;60,1913
-    auto is_atty(const std::basic_ostream<CharT> &stream) -> bool;62,2009
-  template <uint8_t code,208,5722
-  template <uint8_t code,221,6073
-  template <uint8_t r,235,6431
-  template <uint8_t r, uint8_t g,235,6431
-  template <uint8_t r, uint8_t g, uint8_t b,235,6431
-  template <uint8_t r,248,6824
-  template <uint8_t r, uint8_t g,248,6824
-  template <uint8_t r, uint8_t g, uint8_t b,248,6824
-  namespace _internal773,21860
-    inline HANDLE get_terminal_handle(849,24437
-    inline HANDLE get_terminal_handle(860,24827
-    void win_change_attributes(872,25261
-#undef TERMCOLOR_TARGET_POSIX930,27021
-#undef TERMCOLOR_TARGET_WINDOWS931,27051
-#undef TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES934,27135
-#undef TERMCOLOR_USE_WINDOWS_API935,27178
-
-compiler/diagnostics/utils.cpp,46
-namespace swallow::compiler::diagnostics3,20
-
-compiler/diagnostics/utils.h,41
-#define SWALLOW_DIAGNOSTICS_UTILS_H3,37
-
-compiler/diagnostics/diagnostics.cpp,925
-namespace swallow::compiler::diagnostics13,209
-#define DISPLAYED_LINE_PADDING 16,253
-#define COLOR_RED 18,287
-#define COLOR_GREEN 19,318
-#define COLOR_WHITE 20,351
-#define COLOR_GREY 21,385
-#define COLOR_BEACH 22,418
-#define COLOR_LIGHT_GREY 23,452
-#define COLOR_BLUE 24,491
-#define COLOR_ORANGE 25,522
-#define COLOR_YELLOW 26,556
-#define COLOR_AQUA 27,589
-  void print_formatted_text(117,2768
-  Span::Span(169,4401
-  Span::Span(173,4550
-  void Span::set_end_index(set_end_index
193,5204
-  Label::Label(200,5384
-  Details::Details(249,6642
-  LabelGroup::LabelGroup(309,8343
-  void LabelGroup::print(print
327,8899
-  void LabelGroup::print_labels_level(print_labels_level
365,10276
-  void LabelGroup::print_colored_source_line(print_colored_source_line
492,14656
-  FileGroup::FileGroup(626,18321
-  void FileGroup::print(print
656,19312
-  Report::Report(706,20830
-  void Report::print(print
715,21114
-
-compiler/g-machine/binop.cpp,46
-namespace swallow::compiler::gmachine33,1637
-
-compiler/g-machine/binop.hpp,279
-#define SWALLOW_COMPILER_G_MACHINE_BINOP_HPP31,1633
-namespace swallow::compiler::gmachine36,1725
-  class Binop38,1765
-      operatorsToString(const utils::Binop op) noexcept -> std::string;42,1823
-      operatorsAction(const utils::Binop op) noexcept -> std::string;44,1925
-
-compiler/g-machine/environment.hpp,589
-#define SWALLOW_COMPILER_G_MACHINE_ENVIRONMENT_HPP31,1639
-namespace swallow::compiler::gmachine37,1761
-  class Environment40,1802
-  class Variable 54,2144
-    std::string Name;57,2196
-    Ptr Parent;58,2218
-    Variable(60,2235
-      -> tl::optional<int> override;65,2406
-      hasVariable(const std::string &name) const noexcept -> bool override;68,2467
-  class Offset 71,2549
-    uint32_t Value;74,2599
-    Ptr Parent;75,2619
-    Offset(77,2636
-      -> tl::optional<int> override;82,2805
-      hasVariable(const std::string &name) const noexcept -> bool override;85,2866
-
-compiler/g-machine/instruction.cpp,440
-namespace swallow::compiler::gmachine::instruction32,1616
-  void Pop::dump(dump
34,1669
-  void MakeApplication::dump(dump
35,1738
-  void Pack::dump(dump
36,1819
-  void Split::dump(dump
37,1889
-  void Slide::dump(dump
38,1960
-  void Allocation::dump(dump
39,2031
-  void Unwind::dump(dump
40,2107
-  void Jump::dump(dump
41,2179
-  void PushInt::dump(dump
42,2249
-  void PushGlobal::dump(dump
43,2322
-  void Push::dump(dump
44,2398
-
-compiler/g-machine/instruction.hpp,1205
-#define SWALLOW_COMPILER_G_MACHINE_INSTRUCTION_HPP31,1639
-namespace swallow::compiler::gmachine::instruction40,1820
-  class Instruction43,1874
-  class PushInt 53,2076
-    const int Value;56,2127
-    explicit PushInt(58,2149
-  class PushGlobal 63,2279
-    const std::string Name;66,2333
-    explicit PushGlobal(68,2362
-  class Push 73,2511
-    uint32_t Offset;76,2559
-    explicit Push(78,2581
-  class Pop 83,2716
-    const uint32_t Count;86,2763
-    explicit Pop(88,2790
-  class MakeApplication 93,2921
-  class Update 99,3059
-    uint32_t Offset;102,3109
-    explicit Update(104,3131
-  class Pack 109,3268
-    int Tag;112,3316
-    int Size;113,3329
-    Pack(115,3344
-  class Split 120,3478
-  class Slide 126,3606
-    uint32_t Offset;129,3655
-    explicit Slide(131,3677
-  class Binop 136,3813
-    utils::Binop Operator;139,3862
-    explicit Binop(141,3890
-  class Eval 146,4036
-  class Allocation 152,4163
-    int Amount;155,4217
-    explicit Allocation(157,4234
-  class Unwind 162,4370
-  class Jump 168,4499
-    std::vector<std::vector<std::unique_ptr<Instruction::Ptr>>> Branches;171,4547
-    std::map<std::map
172,4621
-    std::map<int, int> TagMappings;172,4621
-
-compiler/parser/parser.cpp,101
-namespace yy39,1783
-  void parser::error(error
42,1799
-namespace swallow::compiler::parser56,2231
-
-compiler/parser/parser.h,49
-#define SWALLOW_COMPILER_PARSER_PARSER_H31,1629
-
-compiler/parser/location.hh,193
-#define YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_LOCATION_HH_INCLUDED39,1681
-#define YY_NULLPTR 47,1871
-#define YY_NULLPTR 49,1904
-#define YY_NULLPTR 52,1938
-namespace yy56,1984
-
-compiler/parser/bison_parser.hpp,93
-#define YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_BISON_PARSER_HPP_INCLUDED45,1961
-
-compiler/type/dump.cpp,182
-namespace swallow::compiler::type34,1655
-  void Variable::dump(dump
36,1691
-  void Arrow::dump(dump
47,1963
-  void Base::dump(dump
54,2136
-  void Environment::dump(dump
59,2240
-
-compiler/type/environment.cpp,111
-namespace swallow::compiler::type36,1707
-    -> Result<Result
40,1811
-  void Environment::bind(bind
51,2029
-
-compiler/type/environment.hpp,380
-#define SWALLOW_COMPILER_TYPE_ENVIRONMENT_H31,1632
-namespace swallow::compiler::type37,1731
-  class Environment39,1767
-    std::map<std::map
42,1801
-    std::map<std::string, Type::Ptr> Names;42,1801
-    explicit Environment(45,1887
-    Environment(47,1960
-      -> utils::Result<utils::Result
50,2075
-    [[nodiscard]] auto scope() const noexcept -> Environment;52,2124
-
-compiler/type/type.cpp,152
-namespace swallow::compiler::type35,1673
-                      Type::Ptr right) noexcept -> Result<Result
82,2712
-  void Manager::bind(bind
123,3789
-
-compiler/type/type.hpp,504
-#define SWALLOW_COMPILER_TYPE_TYPE_H31,1625
-namespace swallow::compiler::type39,1763
-  class Type43,1817
-  class Manager89,2813
-    std::map<std::map
93,2867
-    std::map<std::string, Type::Ptr> Types;93,2867
-    auto newTypeName() noexcept -> std::string;95,2912
-    auto newType() noexcept -> Type::Ptr;96,2960
-    auto newArrowType() noexcept -> Type::Ptr;97,3002
-      -> utils::Result<utils::Result
101,3182
-    auto resolve(Type::Ptr type, Variable *&var) noexcept -> Type::Ptr;104,3287
-
-compiler/utils/binop/binop.hpp,194
-#define SWALLOW_COMPILER_UTILS_BINOP_HPP31,1629
-namespace swallow::compiler::utils33,1671
-  enum class Binop35,1708
-    PLUS,37,1731
-    MINUS,38,1741
-    TIMES,39,1752
-    DIVIDE40,1763
-
-compiler/utils/optional/optional.hpp,11200
-#define TL_OPTIONAL_HPP18,624
-#define TL_OPTIONAL_VERSION_MAJOR 20,649
-#define TL_OPTIONAL_VERSION_MINOR 21,685
-#define TL_OPTIONAL_VERSION_PATCH 22,721
-#define TL_OPTIONAL_MSVC201530,888
-#define TL_OPTIONAL_GCC4935,1035
-#define TL_OPTIONAL_GCC5440,1179
-#define TL_OPTIONAL_GCC5545,1323
-#define TL_OPTIONAL_NO_CONSTRR51,1538
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(54,1629
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_ASSIGNABLE(56,1756
-#define TL_OPTIONAL_IS_TRIVIALLY_DESTRUCTIBLE(60,1944
-#define TL_GCC_LESS_8_TRIVIALLY_COPY_CONSTRUCTIBLE_MUTEX67,2304
-namespace tl68,2361
-  namespace detail70,2376
-    struct is_trivially_copy_constructible73,2422
-    struct is_trivially_copy_constructible<is_trivially_copy_constructible
78,2576
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(86,2751
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_ASSIGNABLE(88,2888
-#define TL_OPTIONAL_IS_TRIVIALLY_DESTRUCTIBLE(90,3015
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(93,3145
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_ASSIGNABLE(95,3275
-#define TL_OPTIONAL_IS_TRIVIALLY_DESTRUCTIBLE(97,3402
-#define TL_OPTIONAL_CXX14102,3560
-#define TL_OPTIONAL_11_CONSTEXPR108,3758
-#define TL_OPTIONAL_11_CONSTEXPR 110,3797
-namespace tl113,3848
-#define TL_MONOSTATE_INPLACE_MUTEX116,3898
-  class monostate118,4002
-  struct in_place_t122,4094
-  static constexpr in_place_t in_place{in_place
127,4221
-  namespace detail132,4309
-#define TL_TRAITS_MUTEX135,4356
-    template <bool E,142,4670
-    using enable_if_t = typename std::enable_if<E, T>::type;type
143,4708
-    template <bool B,144,4769
-    using conditional_t = typename std::conditional<B, T,145,4809
-    using conditional_t = typename std::conditional<B, T, F>::type;type
145,4809
-    template <class...> struct conjunction 148,4913
-    template <class B> struct conjunction<conjunction
151,4982
-      : std::conditional<std::conditional
156,5109
-      : std::conditional<bool(B::value), conjunction<Bs...>, B>::typetype
156,5109
-#define TL_TRAITS_LIBCXX_MEM_FN_WORKAROUND160,5243
-    struct is_pointer_to_non_const_member_func 168,5563
-    struct is_pointer_to_non_const_member_func<is_pointer_to_non_const_member_func
171,5685
-    struct is_pointer_to_non_const_member_func<is_pointer_to_non_const_member_func
175,5833
-    struct is_pointer_to_non_const_member_func<is_pointer_to_non_const_member_func
179,5983
-    struct is_pointer_to_non_const_member_func<is_pointer_to_non_const_member_func
183,6134
-    struct is_pointer_to_non_const_member_func<is_pointer_to_non_const_member_func
187,6291
-    struct is_pointer_to_non_const_member_func<is_pointer_to_non_const_member_func
191,6450
-    template <class T> struct is_const_or_const_ref 195,6562
-    template <class T> struct is_const_or_const_ref<is_const_or_const_ref
197,6640
-    template <class T> struct is_const_or_const_ref<is_const_or_const_ref
199,6728
-      typename Fn,206,6944
-      typename Fn, typename... Args,206,6944
-      typename Fn,221,7542
-      typename Fn, typename... Args,221,7542
-                                       void(237,8252
-    using invoke_result = invoke_result_impl<F, void,245,8482
-    using invoke_result_t = typename invoke_result<F, Us...>::type;type
248,8581
-    namespace swap_adl_tests259,9056
-      struct tag263,9188
-      struct is_std_swap_noexcept285,10030
-      struct is_std_swap_noexcept<is_std_swap_noexcept
292,10313
-      struct is_adl_swap_noexcept296,10424
-          decltype(305,10679
-      : std::integral_constant<std::integral_constant
313,11024
-          is_swappable<is_swappable
324,11428
-    template <class...> struct voider335,11901
-    template <class T> struct is_optional_impl 342,12104
-    template <class T> struct is_optional_impl<is_optional_impl
344,12177
-    using fixup_void = conditional_t<std::is_void<U>::value, monostate,350,12395
-      : std::is_void<std::is_void
359,12842
-    using returns_void = returns_void_impl<F, void,362,12932
-      && !std::is_same<std::is_same
373,13350
-      && !std::is_same<std::is_same
374,13412
-      && !std::is_constructible<std::is_constructible
379,13619
-      && !std::is_constructible<std::is_constructible
380,13676
-      && !std::is_constructible<std::is_constructible
381,13734
-      && !std::is_constructible<std::is_constructible
382,13797
-      && !detail::conjunction<detail::conjunction
391,14245
-      && std::is_constructible<std::is_constructible
393,14368
-      && !std::is_constructible<std::is_constructible
400,14653
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1383,59775
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1383,59775
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1383,59775
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1383,59775
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1384,60129
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1384,60129
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1385,60513
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1385,60513
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1385,60513
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1385,60513
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1385,60513
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1386,60914
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1386,60914
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1386,60914
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1387,61334
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1387,61334
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1388,61773
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1388,61773
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1388,61773
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1389,62240
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-build/.objs/swc/linux/x86_64/debug/compiler/compiler.cpp.o,0
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-
-build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp-34eaf1bb.o.tmp,0
-
-build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp-1d3b74f9.o.tmp,0
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-build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp-8f54ff6f.o.tmp,0
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-build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp-ac045159.o.tmp,0
-
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-build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp-e9b0c16c.o.tmp,0
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-~/Workspace/etags/TAGS-libstdc++-13,include
diff --git a/base/xmake.lua b/base/xmake.lua
index a72f2fb..51216e9 100644
--- a/base/xmake.lua
+++ b/base/xmake.lua
@@ -1,4 +1,4 @@
-target("base")
+target("swallow_base")
     set_kind("static")
     set_languages("c++20")
     add_files("*.cpp")
diff --git a/build.ninja b/build.ninja
index db051ba..3091d9e 100644
--- a/build.ninja
+++ b/build.ninja
@@ -9,55 +9,41 @@ rule gen
  description = regenerating ninja files
 
 # rules for compiler
-rule cxx
- command = /usr/bin/gcc $ARGS -MMD -MF $out.d -o $out -c $in
+rule cc
+ command = /usr/bin/x86_64-w64-mingw32-gcc $ARGS -MMD -MF $out.d -o $out -c $in
  deps = gcc
  depfile = $out.d
- description = compiling.debug $in
+ description = compiling.release $in
 
-rule cu
- command = /usr/bin/clang $ARGS -MMD -MF $out.d -o $out -c $in
+rule cxx
+ command = /usr/bin/x86_64-w64-mingw32-g++ $ARGS -MMD -MF $out.d -o $out -c $in
  deps = gcc
  depfile = $out.d
- description = compiling.debug $in
+ description = compiling.release $in
 
 rule as
- command = /usr/bin/gcc $ARGS -MMD -MF $out.d -o $out -c $in
+ command = /usr/bin/x86_64-w64-mingw32-gcc $ARGS -MMD -MF $out.d -o $out -c $in
  deps = gcc
  depfile = $out.d
- description = compiling.debug $in
+ description = compiling.release $in
 
-rule cc
- command = /usr/bin/gcc $ARGS -MMD -MF $out.d -o $out -c $in
- deps = gcc
- depfile = $out.d
- description = compiling.debug $in
-
-rule mxx
- command = /usr/bin/gcc $ARGS -MMD -MF $out.d -o $out -c $in
- deps = gcc
- depfile = $out.d
- description = compiling.debug $in
-
-rule mm
- command = /usr/bin/gcc $ARGS -MMD -MF $out.d -o $out -c $in
- deps = gcc
- depfile = $out.d
- description = compiling.debug $in
+rule mrc
+ command = /usr/bin/x86_64-w64-mingw32-windres $ARGS $in $out
+ description = compiling.release $in
 
 
 # rules for linker
-rule sh
- command = /usr/bin/g++ -o $out $in $ARGS
- description = linking.debug $out
+rule ar
+ command = /usr/bin/x86_64-w64-mingw32-ar $ARGS $out $in
+ description = archiving.release $out
 
 rule ld
- command = /usr/bin/g++ -o $out $in $ARGS
- description = linking.debug $out
+ command = /usr/bin/x86_64-w64-mingw32-g++ -o $out $in $ARGS
+ description = linking.release $out
 
-rule ar
- command = /usr/bin/ar $ARGS $out $in
- description = archiving.debug $out
+rule sh
+ command = /usr/bin/x86_64-w64-mingw32-g++ -o $out $in $ARGS
+ description = linking.release $out
 
 
 # build targets
@@ -65,92 +51,114 @@ rule ar
 # build build.ninja
 build build.ninja: gen $
   xmake.lua $
+  base/xmake.lua $
+  cli/xmake.lua $
   compiler/xmake.lua $
-  stdlib/xmake.lua $
   repl/xmake.lua $
   compiler/xmake.lua $
-  stdlib/xmake.lua $
-  stdlib/xmake.lua 
+  compiler/xmake.lua $
+  repl/xmake.lua $
+  compiler/xmake.lua 
 
-# build target: stdlib
-build stdlib: phony build/linux/x86_64/debug/libstdlib.so
-build build/linux/x86_64/debug/libstdlib.so: sh build/.objs/stdlib/linux/x86_64/debug/stdlib/stdlib.cpp.o
- ARGS = -shared -m64 -fPIC
+# build target: swi
+build swi: phony build/linux/x86_64/release/libswi.a
+build build/linux/x86_64/release/libswi.a: ar build/.objs/swi/linux/x86_64/release/repl/main.cpp.o || $
+   build/linux/x86_64/release/libswc.a
+ ARGS = -cr
 
-build build/.objs/stdlib/linux/x86_64/debug/stdlib/stdlib.cpp.o: cxx stdlib/stdlib.cpp
- ARGS = -m64 -fPIC -g -O0 -std=c++20
+build build/.objs/swi/linux/x86_64/release/repl/main.cpp.o: cxx repl/main.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -DNDEBUG
 
-# build target: swi
-build swi: phony build/linux/x86_64/debug/swi
-build build/linux/x86_64/debug/swi: ld build/.objs/swi/linux/x86_64/debug/repl/main.cpp.o || $
-   build/linux/x86_64/debug/swc
- ARGS = -m64 -Lbuild/linux/x86_64/debug -Wl,-rpath=$ORIGIN -lstdlib
+# build target: swa
+build swa: phony build/linux/x86_64/release/swa
+build build/linux/x86_64/release/swa: ld build/.objs/swa/linux/x86_64/release/cli/main.cpp.o || $
+   build/linux/x86_64/release/libswc.a build/linux/x86_64/release/libswi.a
+ ARGS = -m64 -Lbuild/linux/x86_64/release -s -lswi -lswc -lpthread
 
-build build/.objs/swi/linux/x86_64/debug/repl/main.cpp.o: cxx repl/main.cpp
- ARGS = -m64 -g -O0 -std=c++20
+build build/.objs/swa/linux/x86_64/release/cli/main.cpp.o: cxx cli/main.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -DNDEBUG
 
 # build target: swc
-build swc: phony build/linux/x86_64/debug/swc
-build build/linux/x86_64/debug/swc: ld build/.objs/swc/linux/x86_64/debug/compiler/compiler.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/ast/ast.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/ast/Dump.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/ast/g-machine.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/ast/type.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/diagnostics/reporter.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/diagnostics/utils.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/diagnostics/diagnostics.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/g-machine/binop.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/g-machine/environment.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/g-machine/instruction.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/lexer/lexer.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/lexer/flex_lexer.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/parser/parser.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/parser/bison_parser.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/type/Dump.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/type/environment.cpp.o build/.objs/swc/linux/x86_64/debug/compiler/type/type.cpp.o || $
-   build/linux/x86_64/debug/libstdlib.so
- ARGS = -m64 -Lbuild/linux/x86_64/debug -Wl,-rpath=$ORIGIN -lc++ -lstdlib
+build swc: phony build/linux/x86_64/release/libswc.a
+build build/linux/x86_64/release/libswc.a: ar build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/gmachine.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/binop.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/instruction.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ir/context.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/node.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/runtime.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/stack.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o
+ ARGS = -cr
+
+build build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o: cxx compiler/compiler.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
+
+build build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o: cxx compiler/ast/ast.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
+
+build build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o: cxx compiler/ast/dump.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
+
+build build/.objs/swc/linux/x86_64/release/compiler/ast/gmachine.cpp.o: cxx compiler/ast/gmachine.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
+
+build build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o: cxx compiler/ast/type.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
+
+build build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o: cxx compiler/diagnostics/diagnostics.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/compiler.cpp.o: cxx compiler/compiler.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o: cxx compiler/diagnostics/utils.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/ast/ast.cpp.o: cxx compiler/ast/ast.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o: cxx compiler/diagnostics/reporter.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/ast/Dump.cpp.o: cxx compiler/ast/Dump.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/gmachine/binop.cpp.o: cxx compiler/gmachine/binop.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/ast/g-machine.cpp.o: cxx compiler/ast/g-machine.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/gmachine/environment.cpp.o: cxx compiler/gmachine/environment.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/ast/type.cpp.o: cxx compiler/ast/type.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/gmachine/instruction.cpp.o: cxx compiler/gmachine/instruction.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/diagnostics/reporter.cpp.o: cxx compiler/diagnostics/reporter.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/ir/context.cpp.o: cxx compiler/ir/context.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/diagnostics/utils.cpp.o: cxx compiler/diagnostics/utils.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o: cxx compiler/lexer/flex_lexer.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/diagnostics/diagnostics.cpp.o: cxx compiler/diagnostics/diagnostics.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o: cxx compiler/lexer/lexer.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/g-machine/binop.cpp.o: cxx compiler/g-machine/binop.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o: cxx compiler/parser/bison_parser.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/g-machine/environment.cpp.o: cxx compiler/g-machine/environment.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o: cxx compiler/parser/parser.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/g-machine/instruction.cpp.o: cxx compiler/g-machine/instruction.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/runtime/node.cpp.o: cxx compiler/runtime/node.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/lexer/lexer.cpp.o: cxx compiler/lexer/lexer.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/runtime/runtime.cpp.o: cxx compiler/runtime/runtime.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/lexer/flex_lexer.cpp.o: cxx compiler/lexer/flex_lexer.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/runtime/stack.cpp.o: cxx compiler/runtime/stack.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/parser/parser.cpp.o: cxx compiler/parser/parser.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o: cxx compiler/type/dump.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/parser/bison_parser.cpp.o: cxx compiler/parser/bison_parser.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o: cxx compiler/type/environment.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/type/Dump.cpp.o: cxx compiler/type/Dump.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o: cxx compiler/type/type.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -isystem -DNDEBUG
 
-build build/.objs/swc/linux/x86_64/debug/compiler/type/environment.cpp.o: cxx compiler/type/environment.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+# build target: swallow_base
+build swallow_base: phony build/linux/x86_64/release/libswallow_base.a
+build build/linux/x86_64/release/libswallow_base.a: ar build/.objs/swallow_base/linux/x86_64/release/base/base.cpp.o
+ ARGS = -cr
 
-build build/.objs/swc/linux/x86_64/debug/compiler/type/type.cpp.o: cxx compiler/type/type.cpp
- ARGS = -m64 -g -O0 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils
+build build/.objs/swallow_base/linux/x86_64/release/base/base.cpp.o: cxx base/base.cpp
+ ARGS = -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -DNDEBUG
 
-build default: phony stdlib swi swc
-build all: phony stdlib swi swc
+build default: phony swi swa swc swallow_base
+build all: phony swi swa swc swallow_base
 
 default default
 
diff --git a/cli/main.cpp b/cli/main.cpp
index e9fed0d..dc0a88e 100644
--- a/cli/main.cpp
+++ b/cli/main.cpp
@@ -1,16 +1,10 @@
-#include <string>
-#include "utils/structopt.hpp"
 #include "compiler.h"
+#include "utils/structopt.hpp"
+#include <string>
 
-STRUCTOPT(
-  swallow::compiler::CompilerOptions,
-  file,
-  verbose,
-  dump_ast,
-  dump_types,
-  dump_gmachine_ir);
+STRUCTOPT(swallow::compiler::CompilerOptions, file, verbose, dump_ast, dump_types, dump_gmachine_ir);
 
-int main(int argc, char *argv[])
+auto main(int argc, char *argv[]) -> int
 {
   try
     {
@@ -19,18 +13,17 @@ int main(int argc, char *argv[])
         {
           return swallow::compiler::Compiler(
             structopt::app(
-              "swa compile",
-              swallow::compiler::CompilerOptions::VERSION,
-              swallow::compiler::CompilerOptions::HELP)
+              "swa compile", swallow::compiler::CompilerOptions::VERSION, swallow::compiler::CompilerOptions::HELP)
               .parse<swallow::compiler::CompilerOptions>(argc - 1, &argv[1]));
         }
-      else if (command == "i" || command == "repl")
+      if (command == "i" || command == "repl")
         {
           return 0;
         }
       else
         {
-          std::cout << "USAGE: swa [command]\n\ncommand:\n\tc, compile\tcall the "
+          std::cout << "USAGE: swa [command]\n\ncommand:\n\tc, compile\tcall "
+                       "the "
                        "compiler\n\ti, repl\t\tcall the repl interpreter\n";
         }
     }
diff --git a/cli/utils/structopt.hpp b/cli/utils/structopt.hpp
index 65b9790..d5cbe08 100644
--- a/cli/utils/structopt.hpp
+++ b/cli/utils/structopt.hpp
@@ -13,9 +13,9 @@
  * run-time overhead.
  */
 
+#include <iomanip>
 #include <type_traits>
 #include <utility>
-#include <iomanip>
 
 // Library version
 
@@ -26,10 +26,9 @@
 #define VISIT_STRUCT_STRING_HELPER(X) #X
 #define VISIT_STRUCT_STRING(X)        VISIT_STRUCT_STRING_HELPER(X)
 
-#define VISIT_STRUCT_VERSION_STRING                                                      \
-  VISIT_STRUCT_STRING(VISIT_STRUCT_VERSION_MAJOR)                                        \
-  "." VISIT_STRUCT_STRING(VISIT_STRUCT_VERSION_MINOR) "." VISIT_STRUCT_STRING(           \
-    VISIT_STRUCT_VERSION_PATCH)
+#define VISIT_STRUCT_VERSION_STRING                                                                                    \
+  VISIT_STRUCT_STRING(VISIT_STRUCT_VERSION_MAJOR)                                                                      \
+  "." VISIT_STRUCT_STRING(VISIT_STRUCT_VERSION_MINOR) "." VISIT_STRUCT_STRING(VISIT_STRUCT_VERSION_PATCH)
 
 // For MSVC 2013 support, we put constexpr behind a define.
 
@@ -45,8 +44,7 @@
 // We target C++11, but such functions are tagged VISIT_STRUCT_CXX14_CONSTEXPR.
 
 #ifndef VISIT_STRUCT_CXX14_CONSTEXPR
-#if ((defined _MSC_VER) && (_MSC_VER <= 1900)) || (!defined __cplusplus)                 \
-  || (__cplusplus == 201103L)
+#if ((defined _MSC_VER) && (_MSC_VER <= 1900)) || (!defined __cplusplus) || (__cplusplus == 201103L)
 #define VISIT_STRUCT_CXX14_CONSTEXPR
 #else
 #define VISIT_STRUCT_CXX14_CONSTEXPR constexpr
@@ -67,11 +65,11 @@ namespace visit_struct
     {};
 
     template <typename T>
-    struct is_visitable<T, typename std::enable_if<traits::visitable<T>::value>::type>
-      : std::true_type
+    struct is_visitable<T, typename std::enable_if<traits::visitable<T>::value>::type> : std::true_type
     {};
 
-    // Helper template which removes cv and reference from a type (saves some typing)
+    // Helper template which removes cv and reference from a type (saves some
+    // typing)
     template <typename T> struct clean
     {
       typedef typename std::remove_cv<typename std::remove_reference<T>::type>::type type;
@@ -96,9 +94,7 @@ namespace visit_struct
   // Accessor type: function object encapsulating a pointer-to-member
   template <typename MemPtr, MemPtr ptr> struct accessor
   {
-    template <typename T>
-    VISIT_STRUCT_CONSTEXPR auto
-      operator()(T &&t) const -> decltype(std::forward<T>(t).*ptr)
+    template <typename T> VISIT_STRUCT_CONSTEXPR auto operator()(T &&t) const -> decltype(std::forward<T>(t).*ptr)
     {
       return std::forward<T>(t).*ptr;
     }
@@ -114,10 +110,7 @@ namespace visit_struct
     return traits::visitable<traits::clean_t<S>>::field_count;
   }
 
-  template <typename S> VISIT_STRUCT_CONSTEXPR std::size_t field_count(S &&)
-  {
-    return field_count<S>();
-  }
+  template <typename S> VISIT_STRUCT_CONSTEXPR std::size_t field_count(S &&) { return field_count<S>(); }
 
   // apply_visitor (one struct instance)
   template <typename S, typename V>
@@ -130,12 +123,10 @@ namespace visit_struct
   // apply_visitor (two struct instances)
   template <typename S1, typename S2, typename V>
   VISIT_STRUCT_CXX14_CONSTEXPR auto apply_visitor(V &&v, S1 &&s1, S2 &&s2) ->
-    typename std::enable_if<traits::is_visitable<
-      traits::clean_t<typename traits::common_type<S1, S2>::type>>::value>::type
+    typename std::enable_if<traits::is_visitable<traits::clean_t<typename traits::common_type<S1, S2>::type>>::value>::type
   {
     using common_S = typename traits::common_type<S1, S2>::type;
-    traits::visitable<traits::clean_t<common_S>>::apply(
-      std::forward<V>(v), std::forward<S1>(s1), std::forward<S2>(s2));
+    traits::visitable<traits::clean_t<common_S>>::apply(std::forward<V>(v), std::forward<S1>(s1), std::forward<S2>(s2));
   }
 
   // for_each (Alternate syntax for apply_visitor, reverses order of arguments)
@@ -149,12 +140,10 @@ namespace visit_struct
   // for_each with two structure instances
   template <typename S1, typename S2, typename V>
   VISIT_STRUCT_CXX14_CONSTEXPR auto for_each(S1 &&s1, S2 &&s2, V &&v) ->
-    typename std::enable_if<traits::is_visitable<
-      traits::clean_t<typename traits::common_type<S1, S2>::type>>::value>::type
+    typename std::enable_if<traits::is_visitable<traits::clean_t<typename traits::common_type<S1, S2>::type>>::value>::type
   {
     using common_S = typename traits::common_type<S1, S2>::type;
-    traits::visitable<traits::clean_t<common_S>>::apply(
-      std::forward<V>(v), std::forward<S1>(s1), std::forward<S2>(s2));
+    traits::visitable<traits::clean_t<common_S>>::apply(std::forward<V>(v), std::forward<S1>(s1), std::forward<S2>(s2));
   }
 
   // Visit the types (visit_struct::type_c<...>) of the registered members
@@ -192,14 +181,12 @@ namespace visit_struct
 
   // Get value by index (like std::get for tuples)
   template <int idx, typename S>
-  VISIT_STRUCT_CONSTEXPR auto get(S &&s) ->
-    typename std::enable_if<
-      traits::is_visitable<traits::clean_t<S>>::value,
-      decltype(traits::visitable<traits::clean_t<S>>::get_value(
-        std::integral_constant<int, idx>{}, std::forward<S>(s)))>::type
+  VISIT_STRUCT_CONSTEXPR auto get(S &&s) -> typename std::enable_if<
+                                           traits::is_visitable<traits::clean_t<S>>::value,
+                                           decltype(traits::visitable<traits::clean_t<S>>::get_value(
+                                             std::integral_constant<int, idx>{}, std::forward<S>(s)))>::type
   {
-    return traits::visitable<traits::clean_t<S>>::get_value(
-      std::integral_constant<int, idx>{}, std::forward<S>(s));
+    return traits::visitable<traits::clean_t<S>>::get_value(std::integral_constant<int, idx>{}, std::forward<S>(s));
   }
 
   // Get name of field, by index
@@ -207,15 +194,12 @@ namespace visit_struct
   VISIT_STRUCT_CONSTEXPR auto get_name() ->
     typename std::enable_if<
       traits::is_visitable<traits::clean_t<S>>::value,
-      decltype(traits::visitable<traits::clean_t<S>>::get_name(
-        std::integral_constant<int, idx>{}))>::type
+      decltype(traits::visitable<traits::clean_t<S>>::get_name(std::integral_constant<int, idx>{}))>::type
   {
-    return traits::visitable<traits::clean_t<S>>::get_name(
-      std::integral_constant<int, idx>{});
+    return traits::visitable<traits::clean_t<S>>::get_name(std::integral_constant<int, idx>{});
   }
 
-  template <int idx, typename S>
-  VISIT_STRUCT_CONSTEXPR auto get_name(S &&) -> decltype(get_name<idx, S>())
+  template <int idx, typename S> VISIT_STRUCT_CONSTEXPR auto get_name(S &&) -> decltype(get_name<idx, S>())
   {
     return get_name<idx, S>();
   }
@@ -225,15 +209,12 @@ namespace visit_struct
   VISIT_STRUCT_CONSTEXPR auto get_pointer() ->
     typename std::enable_if<
       traits::is_visitable<traits::clean_t<S>>::value,
-      decltype(traits::visitable<traits::clean_t<S>>::get_pointer(
-        std::integral_constant<int, idx>{}))>::type
+      decltype(traits::visitable<traits::clean_t<S>>::get_pointer(std::integral_constant<int, idx>{}))>::type
   {
-    return traits::visitable<traits::clean_t<S>>::get_pointer(
-      std::integral_constant<int, idx>{});
+    return traits::visitable<traits::clean_t<S>>::get_pointer(std::integral_constant<int, idx>{});
   }
 
-  template <int idx, typename S>
-  VISIT_STRUCT_CONSTEXPR auto get_pointer(S &&) -> decltype(get_pointer<idx, S>())
+  template <int idx, typename S> VISIT_STRUCT_CONSTEXPR auto get_pointer(S &&) -> decltype(get_pointer<idx, S>())
   {
     return get_pointer<idx, S>();
   }
@@ -243,15 +224,12 @@ namespace visit_struct
   VISIT_STRUCT_CONSTEXPR auto get_accessor() ->
     typename std::enable_if<
       traits::is_visitable<traits::clean_t<S>>::value,
-      decltype(traits::visitable<traits::clean_t<S>>::get_accessor(
-        std::integral_constant<int, idx>{}))>::type
+      decltype(traits::visitable<traits::clean_t<S>>::get_accessor(std::integral_constant<int, idx>{}))>::type
   {
-    return traits::visitable<traits::clean_t<S>>::get_accessor(
-      std::integral_constant<int, idx>{});
+    return traits::visitable<traits::clean_t<S>>::get_accessor(std::integral_constant<int, idx>{});
   }
 
-  template <int idx, typename S>
-  VISIT_STRUCT_CONSTEXPR auto get_accessor(S &&) -> decltype(get_accessor<idx, S>())
+  template <int idx, typename S> VISIT_STRUCT_CONSTEXPR auto get_accessor(S &&) -> decltype(get_accessor<idx, S>())
   {
     return get_accessor<idx, S>();
   }
@@ -259,8 +237,7 @@ namespace visit_struct
   // Get type, by index
   template <int idx, typename S> struct type_at_s
   {
-    using type_c = decltype(traits::visitable<traits::clean_t<S>>::type_at(
-      std::integral_constant<int, idx>{}));
+    using type_c = decltype(traits::visitable<traits::clean_t<S>>::type_at(std::integral_constant<int, idx>{}));
     using type = typename type_c::type;
   };
 
@@ -268,37 +245,33 @@ namespace visit_struct
 
   // Get name of structure
   template <typename S>
-  VISIT_STRUCT_CONSTEXPR auto get_name() ->
-    typename std::enable_if<
-      traits::is_visitable<traits::clean_t<S>>::value,
-      decltype(traits::visitable<traits::clean_t<S>>::get_name())>::type
+  VISIT_STRUCT_CONSTEXPR auto get_name() -> typename std::enable_if<
+                                           traits::is_visitable<traits::clean_t<S>>::value,
+                                           decltype(traits::visitable<traits::clean_t<S>>::get_name())>::type
   {
     return traits::visitable<traits::clean_t<S>>::get_name();
   }
 
-  template <typename S>
-  VISIT_STRUCT_CONSTEXPR auto get_name(S &&) -> decltype(get_name<S>())
-  {
-    return get_name<S>();
-  }
+  template <typename S> VISIT_STRUCT_CONSTEXPR auto get_name(S &&) -> decltype(get_name<S>()) { return get_name<S>(); }
 
   /***
-   * To implement the VISITABLE_STRUCT macro, we need a map-macro, which can take
-   * the name of a macro and some other arguments, and apply that macro to each other
-   * argument.
+   * To implement the VISITABLE_STRUCT macro, we need a map-macro, which can
+   * take the name of a macro and some other arguments, and apply that macro to
+   * each other argument.
    *
-   * There are some techniques you can use within C preprocessor to accomplish this
-   * succinctly, by settng up "recursive" macros.
+   * There are some techniques you can use within C preprocessor to accomplish
+   * this succinctly, by settng up "recursive" macros.
    *
-   * But this can also cause it to give worse error messages when something goes wrong.
+   * But this can also cause it to give worse error messages when something goes
+   * wrong.
    *
-   * We are now doing it in a more "dumb", bulletproof way which has the advantage that it
-   * is more portable and gives better error messages. For discussion see
-   * IMPLEMENTATION_NOTES.md
+   * We are now doing it in a more "dumb", bulletproof way which has the
+   * advantage that it is more portable and gives better error messages. For
+   * discussion see IMPLEMENTATION_NOTES.md
    *
-   * The code below is based on a patch from Jarod42, and is now generated by a python
-   * script. The purpose of the generated code is to define VISIT_STRUCT_PP_MAP as
-   * described.
+   * The code below is based on a patch from Jarod42, and is now generated by a
+   * python script. The purpose of the generated code is to define
+   * VISIT_STRUCT_PP_MAP as described.
    */
 
   /*** Generated code ***/
@@ -306,151 +279,151 @@ namespace visit_struct
   static VISIT_STRUCT_CONSTEXPR const int max_visitable_members = 69;
 
 #define VISIT_STRUCT_EXPAND(x) x
-#define VISIT_STRUCT_PP_ARG_N(                                                           \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63,                                                                                   \
-  _64,                                                                                   \
-  _65,                                                                                   \
-  _66,                                                                                   \
-  _67,                                                                                   \
-  _68,                                                                                   \
-  _69,                                                                                   \
-  N,                                                                                     \
-  ...)                                                                                   \
+#define VISIT_STRUCT_PP_ARG_N(                                                                                         \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63,                                                                                                                 \
+  _64,                                                                                                                 \
+  _65,                                                                                                                 \
+  _66,                                                                                                                 \
+  _67,                                                                                                                 \
+  _68,                                                                                                                 \
+  _69,                                                                                                                 \
+  N,                                                                                                                   \
+  ...)                                                                                                                 \
   N
-#define VISIT_STRUCT_PP_NARG(...)                                                        \
-  VISIT_STRUCT_EXPAND(VISIT_STRUCT_PP_ARG_N(                                             \
-    __VA_ARGS__,                                                                         \
-    69,                                                                                  \
-    68,                                                                                  \
-    67,                                                                                  \
-    66,                                                                                  \
-    65,                                                                                  \
-    64,                                                                                  \
-    63,                                                                                  \
-    62,                                                                                  \
-    61,                                                                                  \
-    60,                                                                                  \
-    59,                                                                                  \
-    58,                                                                                  \
-    57,                                                                                  \
-    56,                                                                                  \
-    55,                                                                                  \
-    54,                                                                                  \
-    53,                                                                                  \
-    52,                                                                                  \
-    51,                                                                                  \
-    50,                                                                                  \
-    49,                                                                                  \
-    48,                                                                                  \
-    47,                                                                                  \
-    46,                                                                                  \
-    45,                                                                                  \
-    44,                                                                                  \
-    43,                                                                                  \
-    42,                                                                                  \
-    41,                                                                                  \
-    40,                                                                                  \
-    39,                                                                                  \
-    38,                                                                                  \
-    37,                                                                                  \
-    36,                                                                                  \
-    35,                                                                                  \
-    34,                                                                                  \
-    33,                                                                                  \
-    32,                                                                                  \
-    31,                                                                                  \
-    30,                                                                                  \
-    29,                                                                                  \
-    28,                                                                                  \
-    27,                                                                                  \
-    26,                                                                                  \
-    25,                                                                                  \
-    24,                                                                                  \
-    23,                                                                                  \
-    22,                                                                                  \
-    21,                                                                                  \
-    20,                                                                                  \
-    19,                                                                                  \
-    18,                                                                                  \
-    17,                                                                                  \
-    16,                                                                                  \
-    15,                                                                                  \
-    14,                                                                                  \
-    13,                                                                                  \
-    12,                                                                                  \
-    11,                                                                                  \
-    10,                                                                                  \
-    9,                                                                                   \
-    8,                                                                                   \
-    7,                                                                                   \
-    6,                                                                                   \
-    5,                                                                                   \
-    4,                                                                                   \
-    3,                                                                                   \
-    2,                                                                                   \
-    1,                                                                                   \
+#define VISIT_STRUCT_PP_NARG(...)                                                                                      \
+  VISIT_STRUCT_EXPAND(VISIT_STRUCT_PP_ARG_N(                                                                           \
+    __VA_ARGS__,                                                                                                       \
+    69,                                                                                                                \
+    68,                                                                                                                \
+    67,                                                                                                                \
+    66,                                                                                                                \
+    65,                                                                                                                \
+    64,                                                                                                                \
+    63,                                                                                                                \
+    62,                                                                                                                \
+    61,                                                                                                                \
+    60,                                                                                                                \
+    59,                                                                                                                \
+    58,                                                                                                                \
+    57,                                                                                                                \
+    56,                                                                                                                \
+    55,                                                                                                                \
+    54,                                                                                                                \
+    53,                                                                                                                \
+    52,                                                                                                                \
+    51,                                                                                                                \
+    50,                                                                                                                \
+    49,                                                                                                                \
+    48,                                                                                                                \
+    47,                                                                                                                \
+    46,                                                                                                                \
+    45,                                                                                                                \
+    44,                                                                                                                \
+    43,                                                                                                                \
+    42,                                                                                                                \
+    41,                                                                                                                \
+    40,                                                                                                                \
+    39,                                                                                                                \
+    38,                                                                                                                \
+    37,                                                                                                                \
+    36,                                                                                                                \
+    35,                                                                                                                \
+    34,                                                                                                                \
+    33,                                                                                                                \
+    32,                                                                                                                \
+    31,                                                                                                                \
+    30,                                                                                                                \
+    29,                                                                                                                \
+    28,                                                                                                                \
+    27,                                                                                                                \
+    26,                                                                                                                \
+    25,                                                                                                                \
+    24,                                                                                                                \
+    23,                                                                                                                \
+    22,                                                                                                                \
+    21,                                                                                                                \
+    20,                                                                                                                \
+    19,                                                                                                                \
+    18,                                                                                                                \
+    17,                                                                                                                \
+    16,                                                                                                                \
+    15,                                                                                                                \
+    14,                                                                                                                \
+    13,                                                                                                                \
+    12,                                                                                                                \
+    11,                                                                                                                \
+    10,                                                                                                                \
+    9,                                                                                                                 \
+    8,                                                                                                                 \
+    7,                                                                                                                 \
+    6,                                                                                                                 \
+    5,                                                                                                                 \
+    4,                                                                                                                 \
+    3,                                                                                                                 \
+    2,                                                                                                                 \
+    1,                                                                                                                 \
     0))
 
 /* need extra level to force extra eval */
@@ -458,2592 +431,2390 @@ namespace visit_struct
 #define VISIT_STRUCT_CONCAT(a, b)  VISIT_STRUCT_CONCAT_(a, b)
 
 #define VISIT_STRUCT_APPLYF0(f)
-#define VISIT_STRUCT_APPLYF1(f, _1)                 f(_1)
-#define VISIT_STRUCT_APPLYF2(f, _1, _2)             f(_1) f(_2)
-#define VISIT_STRUCT_APPLYF3(f, _1, _2, _3)         f(_1) f(_2) f(_3)
-#define VISIT_STRUCT_APPLYF4(f, _1, _2, _3, _4)     f(_1) f(_2) f(_3) f(_4)
-#define VISIT_STRUCT_APPLYF5(f, _1, _2, _3, _4, _5) f(_1) f(_2) f(_3) f(_4) f(_5)
-#define VISIT_STRUCT_APPLYF6(f, _1, _2, _3, _4, _5, _6)                                  \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6)
-#define VISIT_STRUCT_APPLYF7(f, _1, _2, _3, _4, _5, _6, _7)                              \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7)
-#define VISIT_STRUCT_APPLYF8(f, _1, _2, _3, _4, _5, _6, _7, _8)                          \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8)
-#define VISIT_STRUCT_APPLYF9(f, _1, _2, _3, _4, _5, _6, _7, _8, _9)                      \
+#define VISIT_STRUCT_APPLYF1(f, _1)                             f(_1)
+#define VISIT_STRUCT_APPLYF2(f, _1, _2)                         f(_1) f(_2)
+#define VISIT_STRUCT_APPLYF3(f, _1, _2, _3)                     f(_1) f(_2) f(_3)
+#define VISIT_STRUCT_APPLYF4(f, _1, _2, _3, _4)                 f(_1) f(_2) f(_3) f(_4)
+#define VISIT_STRUCT_APPLYF5(f, _1, _2, _3, _4, _5)             f(_1) f(_2) f(_3) f(_4) f(_5)
+#define VISIT_STRUCT_APPLYF6(f, _1, _2, _3, _4, _5, _6)         f(_1) f(_2) f(_3) f(_4) f(_5) f(_6)
+#define VISIT_STRUCT_APPLYF7(f, _1, _2, _3, _4, _5, _6, _7)     f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7)
+#define VISIT_STRUCT_APPLYF8(f, _1, _2, _3, _4, _5, _6, _7, _8) f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8)
+#define VISIT_STRUCT_APPLYF9(f, _1, _2, _3, _4, _5, _6, _7, _8, _9)                                                    \
   f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9)
-#define VISIT_STRUCT_APPLYF10(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10)                \
+#define VISIT_STRUCT_APPLYF10(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10)                                              \
   f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10)
-#define VISIT_STRUCT_APPLYF11(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11)           \
+#define VISIT_STRUCT_APPLYF11(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11)                                         \
   f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11)
-#define VISIT_STRUCT_APPLYF12(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12)      \
+#define VISIT_STRUCT_APPLYF12(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12)                                    \
   f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12)
-#define VISIT_STRUCT_APPLYF13(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13) \
+#define VISIT_STRUCT_APPLYF13(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13)                               \
   f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)
-#define VISIT_STRUCT_APPLYF14(                                                           \
-  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14)                        \
+#define VISIT_STRUCT_APPLYF14(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14)                          \
   f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14)
-#define VISIT_STRUCT_APPLYF15(                                                           \
-  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15)                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15)
-#define VISIT_STRUCT_APPLYF16(                                                           \
-  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16)              \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16)
-#define VISIT_STRUCT_APPLYF17(                                                           \
-  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17)         \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17)
-#define VISIT_STRUCT_APPLYF18(                                                           \
-  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18)    \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18)
-#define VISIT_STRUCT_APPLYF19(                                                             \
-  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19) \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)        \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19)
-#define VISIT_STRUCT_APPLYF20(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20)
-#define VISIT_STRUCT_APPLYF21(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21)
-#define VISIT_STRUCT_APPLYF22(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22)
-#define VISIT_STRUCT_APPLYF23(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23)
-#define VISIT_STRUCT_APPLYF24(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24)
-#define VISIT_STRUCT_APPLYF25(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)
-#define VISIT_STRUCT_APPLYF26(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26)
-#define VISIT_STRUCT_APPLYF27(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27)
-#define VISIT_STRUCT_APPLYF28(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28)
-#define VISIT_STRUCT_APPLYF29(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29)
-#define VISIT_STRUCT_APPLYF30(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30)
-#define VISIT_STRUCT_APPLYF31(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31)
-#define VISIT_STRUCT_APPLYF32(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32)
-#define VISIT_STRUCT_APPLYF33(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33)
-#define VISIT_STRUCT_APPLYF34(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)
-#define VISIT_STRUCT_APPLYF35(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35)
-#define VISIT_STRUCT_APPLYF36(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)
-#define VISIT_STRUCT_APPLYF37(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37)
-#define VISIT_STRUCT_APPLYF38(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38)
-#define VISIT_STRUCT_APPLYF39(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39)
-#define VISIT_STRUCT_APPLYF40(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40)
-#define VISIT_STRUCT_APPLYF41(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41)
-#define VISIT_STRUCT_APPLYF42(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42)
-#define VISIT_STRUCT_APPLYF43(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43)
-#define VISIT_STRUCT_APPLYF44(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44)
-#define VISIT_STRUCT_APPLYF45(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45)
-#define VISIT_STRUCT_APPLYF46(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46)
-#define VISIT_STRUCT_APPLYF47(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)
-#define VISIT_STRUCT_APPLYF48(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48)
-#define VISIT_STRUCT_APPLYF49(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49)
-#define VISIT_STRUCT_APPLYF50(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50)
-#define VISIT_STRUCT_APPLYF51(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51)
-#define VISIT_STRUCT_APPLYF52(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52)
-#define VISIT_STRUCT_APPLYF53(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53)
-#define VISIT_STRUCT_APPLYF54(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54)
-#define VISIT_STRUCT_APPLYF55(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55)
-#define VISIT_STRUCT_APPLYF56(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56)
-#define VISIT_STRUCT_APPLYF57(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57)
-#define VISIT_STRUCT_APPLYF58(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)
-#define VISIT_STRUCT_APPLYF59(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59)
-#define VISIT_STRUCT_APPLYF60(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60)
-#define VISIT_STRUCT_APPLYF61(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61)
-#define VISIT_STRUCT_APPLYF62(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62)
-#define VISIT_STRUCT_APPLYF63(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62) f(_63)
-#define VISIT_STRUCT_APPLYF64(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63,                                                                                   \
-  _64)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62) f(_63) f(_64)
-#define VISIT_STRUCT_APPLYF65(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63,                                                                                   \
-  _64,                                                                                   \
-  _65)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65)
-#define VISIT_STRUCT_APPLYF66(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63,                                                                                   \
-  _64,                                                                                   \
-  _65,                                                                                   \
-  _66)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65) f(_66)
-#define VISIT_STRUCT_APPLYF67(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63,                                                                                   \
-  _64,                                                                                   \
-  _65,                                                                                   \
-  _66,                                                                                   \
-  _67)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65) f(_66) f(_67)
-#define VISIT_STRUCT_APPLYF68(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63,                                                                                   \
-  _64,                                                                                   \
-  _65,                                                                                   \
-  _66,                                                                                   \
-  _67,                                                                                   \
-  _68)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65) f(_66) f(_67) f(_68)
-#define VISIT_STRUCT_APPLYF69(                                                           \
-  f,                                                                                     \
-  _1,                                                                                    \
-  _2,                                                                                    \
-  _3,                                                                                    \
-  _4,                                                                                    \
-  _5,                                                                                    \
-  _6,                                                                                    \
-  _7,                                                                                    \
-  _8,                                                                                    \
-  _9,                                                                                    \
-  _10,                                                                                   \
-  _11,                                                                                   \
-  _12,                                                                                   \
-  _13,                                                                                   \
-  _14,                                                                                   \
-  _15,                                                                                   \
-  _16,                                                                                   \
-  _17,                                                                                   \
-  _18,                                                                                   \
-  _19,                                                                                   \
-  _20,                                                                                   \
-  _21,                                                                                   \
-  _22,                                                                                   \
-  _23,                                                                                   \
-  _24,                                                                                   \
-  _25,                                                                                   \
-  _26,                                                                                   \
-  _27,                                                                                   \
-  _28,                                                                                   \
-  _29,                                                                                   \
-  _30,                                                                                   \
-  _31,                                                                                   \
-  _32,                                                                                   \
-  _33,                                                                                   \
-  _34,                                                                                   \
-  _35,                                                                                   \
-  _36,                                                                                   \
-  _37,                                                                                   \
-  _38,                                                                                   \
-  _39,                                                                                   \
-  _40,                                                                                   \
-  _41,                                                                                   \
-  _42,                                                                                   \
-  _43,                                                                                   \
-  _44,                                                                                   \
-  _45,                                                                                   \
-  _46,                                                                                   \
-  _47,                                                                                   \
-  _48,                                                                                   \
-  _49,                                                                                   \
-  _50,                                                                                   \
-  _51,                                                                                   \
-  _52,                                                                                   \
-  _53,                                                                                   \
-  _54,                                                                                   \
-  _55,                                                                                   \
-  _56,                                                                                   \
-  _57,                                                                                   \
-  _58,                                                                                   \
-  _59,                                                                                   \
-  _60,                                                                                   \
-  _61,                                                                                   \
-  _62,                                                                                   \
-  _63,                                                                                   \
-  _64,                                                                                   \
-  _65,                                                                                   \
-  _66,                                                                                   \
-  _67,                                                                                   \
-  _68,                                                                                   \
-  _69)                                                                                   \
-  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13)      \
-    f(_14) f(_15) f(_16) f(_17) f(_18) f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)  \
-      f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34) f(_35) f(_36)       \
-        f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)     \
-          f(_48) f(_49) f(_50) f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)   \
-            f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65) f(_66) f(_67) f(_68) f(_69)
+#define VISIT_STRUCT_APPLYF15(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15)                     \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15)
+#define VISIT_STRUCT_APPLYF16(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16)                \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16)
+#define VISIT_STRUCT_APPLYF17(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17)           \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17)
+#define VISIT_STRUCT_APPLYF18(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18)      \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18)
+#define VISIT_STRUCT_APPLYF19(f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19) \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19)
+#define VISIT_STRUCT_APPLYF20(                                                                                         \
+  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20)                        \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20)
+#define VISIT_STRUCT_APPLYF21(                                                                                         \
+  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21)                   \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21)
+#define VISIT_STRUCT_APPLYF22(                                                                                         \
+  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22)              \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22)
+#define VISIT_STRUCT_APPLYF23(                                                                                         \
+  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23)         \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23)
+#define VISIT_STRUCT_APPLYF24(                                                                                         \
+  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24)    \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24)
+#define VISIT_STRUCT_APPLYF25(                                                                                           \
+  f, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25) \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18)   \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25)
+#define VISIT_STRUCT_APPLYF26(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26)
+#define VISIT_STRUCT_APPLYF27(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27)
+#define VISIT_STRUCT_APPLYF28(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28)
+#define VISIT_STRUCT_APPLYF29(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29)
+#define VISIT_STRUCT_APPLYF30(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30)
+#define VISIT_STRUCT_APPLYF31(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31)
+#define VISIT_STRUCT_APPLYF32(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32)
+#define VISIT_STRUCT_APPLYF33(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33)
+#define VISIT_STRUCT_APPLYF34(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)
+#define VISIT_STRUCT_APPLYF35(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35)
+#define VISIT_STRUCT_APPLYF36(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36)
+#define VISIT_STRUCT_APPLYF37(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37)
+#define VISIT_STRUCT_APPLYF38(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38)
+#define VISIT_STRUCT_APPLYF39(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39)
+#define VISIT_STRUCT_APPLYF40(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40)
+#define VISIT_STRUCT_APPLYF41(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41)
+#define VISIT_STRUCT_APPLYF42(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42)
+#define VISIT_STRUCT_APPLYF43(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43)
+#define VISIT_STRUCT_APPLYF44(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44)
+#define VISIT_STRUCT_APPLYF45(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45)
+#define VISIT_STRUCT_APPLYF46(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46)
+#define VISIT_STRUCT_APPLYF47(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47)
+#define VISIT_STRUCT_APPLYF48(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48)
+#define VISIT_STRUCT_APPLYF49(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49)
+#define VISIT_STRUCT_APPLYF50(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)
+#define VISIT_STRUCT_APPLYF51(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51)
+#define VISIT_STRUCT_APPLYF52(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52)
+#define VISIT_STRUCT_APPLYF53(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53)
+#define VISIT_STRUCT_APPLYF54(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54)
+#define VISIT_STRUCT_APPLYF55(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55)
+#define VISIT_STRUCT_APPLYF56(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56)
+#define VISIT_STRUCT_APPLYF57(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57)
+#define VISIT_STRUCT_APPLYF58(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58)
+#define VISIT_STRUCT_APPLYF59(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59)
+#define VISIT_STRUCT_APPLYF60(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60)
+#define VISIT_STRUCT_APPLYF61(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61)
+#define VISIT_STRUCT_APPLYF62(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62)
+#define VISIT_STRUCT_APPLYF63(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62) f(_63)
+#define VISIT_STRUCT_APPLYF64(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63,                                                                                                                 \
+  _64)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62) f(_63) f(_64)
+#define VISIT_STRUCT_APPLYF65(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63,                                                                                                                 \
+  _64,                                                                                                                 \
+  _65)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65)
+#define VISIT_STRUCT_APPLYF66(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63,                                                                                                                 \
+  _64,                                                                                                                 \
+  _65,                                                                                                                 \
+  _66)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65)       \
+          f(_66)
+#define VISIT_STRUCT_APPLYF67(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63,                                                                                                                 \
+  _64,                                                                                                                 \
+  _65,                                                                                                                 \
+  _66,                                                                                                                 \
+  _67)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65)       \
+          f(_66) f(_67)
+#define VISIT_STRUCT_APPLYF68(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63,                                                                                                                 \
+  _64,                                                                                                                 \
+  _65,                                                                                                                 \
+  _66,                                                                                                                 \
+  _67,                                                                                                                 \
+  _68)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65)       \
+          f(_66) f(_67) f(_68)
+#define VISIT_STRUCT_APPLYF69(                                                                                         \
+  f,                                                                                                                   \
+  _1,                                                                                                                  \
+  _2,                                                                                                                  \
+  _3,                                                                                                                  \
+  _4,                                                                                                                  \
+  _5,                                                                                                                  \
+  _6,                                                                                                                  \
+  _7,                                                                                                                  \
+  _8,                                                                                                                  \
+  _9,                                                                                                                  \
+  _10,                                                                                                                 \
+  _11,                                                                                                                 \
+  _12,                                                                                                                 \
+  _13,                                                                                                                 \
+  _14,                                                                                                                 \
+  _15,                                                                                                                 \
+  _16,                                                                                                                 \
+  _17,                                                                                                                 \
+  _18,                                                                                                                 \
+  _19,                                                                                                                 \
+  _20,                                                                                                                 \
+  _21,                                                                                                                 \
+  _22,                                                                                                                 \
+  _23,                                                                                                                 \
+  _24,                                                                                                                 \
+  _25,                                                                                                                 \
+  _26,                                                                                                                 \
+  _27,                                                                                                                 \
+  _28,                                                                                                                 \
+  _29,                                                                                                                 \
+  _30,                                                                                                                 \
+  _31,                                                                                                                 \
+  _32,                                                                                                                 \
+  _33,                                                                                                                 \
+  _34,                                                                                                                 \
+  _35,                                                                                                                 \
+  _36,                                                                                                                 \
+  _37,                                                                                                                 \
+  _38,                                                                                                                 \
+  _39,                                                                                                                 \
+  _40,                                                                                                                 \
+  _41,                                                                                                                 \
+  _42,                                                                                                                 \
+  _43,                                                                                                                 \
+  _44,                                                                                                                 \
+  _45,                                                                                                                 \
+  _46,                                                                                                                 \
+  _47,                                                                                                                 \
+  _48,                                                                                                                 \
+  _49,                                                                                                                 \
+  _50,                                                                                                                 \
+  _51,                                                                                                                 \
+  _52,                                                                                                                 \
+  _53,                                                                                                                 \
+  _54,                                                                                                                 \
+  _55,                                                                                                                 \
+  _56,                                                                                                                 \
+  _57,                                                                                                                 \
+  _58,                                                                                                                 \
+  _59,                                                                                                                 \
+  _60,                                                                                                                 \
+  _61,                                                                                                                 \
+  _62,                                                                                                                 \
+  _63,                                                                                                                 \
+  _64,                                                                                                                 \
+  _65,                                                                                                                 \
+  _66,                                                                                                                 \
+  _67,                                                                                                                 \
+  _68,                                                                                                                 \
+  _69)                                                                                                                 \
+  f(_1) f(_2) f(_3) f(_4) f(_5) f(_6) f(_7) f(_8) f(_9) f(_10) f(_11) f(_12) f(_13) f(_14) f(_15) f(_16) f(_17) f(_18) \
+    f(_19) f(_20) f(_21) f(_22) f(_23) f(_24) f(_25) f(_26) f(_27) f(_28) f(_29) f(_30) f(_31) f(_32) f(_33) f(_34)    \
+      f(_35) f(_36) f(_37) f(_38) f(_39) f(_40) f(_41) f(_42) f(_43) f(_44) f(_45) f(_46) f(_47) f(_48) f(_49) f(_50)  \
+        f(_51) f(_52) f(_53) f(_54) f(_55) f(_56) f(_57) f(_58) f(_59) f(_60) f(_61) f(_62) f(_63) f(_64) f(_65)       \
+          f(_66) f(_67) f(_68) f(_69)
 
 #define VISIT_STRUCT_APPLY_F_(M, ...) VISIT_STRUCT_EXPAND(M(__VA_ARGS__))
-#define VISIT_STRUCT_PP_MAP(f, ...)                                                      \
-  VISIT_STRUCT_EXPAND(VISIT_STRUCT_APPLY_F_(                                             \
-    VISIT_STRUCT_CONCAT(VISIT_STRUCT_APPLYF, VISIT_STRUCT_PP_NARG(__VA_ARGS__)),         \
-    f,                                                                                   \
-    __VA_ARGS__))
+#define VISIT_STRUCT_PP_MAP(f, ...)                                                                                    \
+  VISIT_STRUCT_EXPAND(VISIT_STRUCT_APPLY_F_(                                                                           \
+    VISIT_STRUCT_CONCAT(VISIT_STRUCT_APPLYF, VISIT_STRUCT_PP_NARG(__VA_ARGS__)), f, __VA_ARGS__))
 
   /*** End generated code ***/
 
@@ -3053,137 +2824,127 @@ namespace visit_struct
 
 #define VISIT_STRUCT_FIELD_COUNT(MEMBER_NAME) +1
 
-#define VISIT_STRUCT_MEMBER_HELPER(MEMBER_NAME)                                          \
+#define VISIT_STRUCT_MEMBER_HELPER(MEMBER_NAME)                                                                        \
   std::forward<V>(visitor)(#MEMBER_NAME, std::forward<S>(struct_instance).MEMBER_NAME);
 
-#define VISIT_STRUCT_MEMBER_HELPER_PTR(MEMBER_NAME)                                      \
-  std::forward<V>(visitor)(#MEMBER_NAME, &this_type::MEMBER_NAME);
-
-#define VISIT_STRUCT_MEMBER_HELPER_TYPE(MEMBER_NAME)                                     \
-  std::forward<V>(visitor)(                                                              \
-    #MEMBER_NAME, visit_struct::type_c<decltype(this_type::MEMBER_NAME)>{});
-
-#define VISIT_STRUCT_MEMBER_HELPER_ACC(MEMBER_NAME)                                      \
-  std::forward<V>(visitor)(                                                              \
-    #MEMBER_NAME,                                                                        \
-    visit_struct::accessor<decltype(&this_type::MEMBER_NAME), &this_type::MEMBER_NAME>{});
-
-#define VISIT_STRUCT_MEMBER_HELPER_PAIR(MEMBER_NAME)                                     \
-  std::forward<V>(visitor)(                                                              \
-    #MEMBER_NAME, std::forward<S1>(s1).MEMBER_NAME, std::forward<S2>(s2).MEMBER_NAME);
-
-#define VISIT_STRUCT_MAKE_GETTERS(MEMBER_NAME)                                            \
-  template <typename S>                                                                   \
-  static VISIT_STRUCT_CONSTEXPR auto get_value(                                           \
-    std::integral_constant<int, fields_enum::MEMBER_NAME>,                                \
-    S &&s) -> decltype((std::forward<S>(s).MEMBER_NAME))                                  \
-  {                                                                                       \
-    return std::forward<S>(s).MEMBER_NAME;                                                \
-  }                                                                                       \
-                                                                                          \
-  static VISIT_STRUCT_CONSTEXPR auto get_name(                                            \
-    std::integral_constant<int, fields_enum::MEMBER_NAME>) -> decltype(#MEMBER_NAME)      \
-  {                                                                                       \
-    return #MEMBER_NAME;                                                                  \
-  }                                                                                       \
-                                                                                          \
-  static VISIT_STRUCT_CONSTEXPR auto get_pointer(                                         \
-    std::integral_constant<int, fields_enum::MEMBER_NAME>)                                \
-    -> decltype(&this_type::MEMBER_NAME)                                                  \
-  {                                                                                       \
-    return &this_type::MEMBER_NAME;                                                       \
-  }                                                                                       \
-                                                                                          \
-  static VISIT_STRUCT_CONSTEXPR auto get_accessor(                                        \
-    std::integral_constant<int, fields_enum::MEMBER_NAME>)                                \
-    -> visit_struct::accessor<decltype(&this_type::MEMBER_NAME), &this_type::MEMBER_NAME> \
-  {                                                                                       \
-    return {};                                                                            \
-  }                                                                                       \
-                                                                                          \
-  static auto type_at(std::integral_constant<int, fields_enum::MEMBER_NAME>)              \
+#define VISIT_STRUCT_MEMBER_HELPER_PTR(MEMBER_NAME) std::forward<V>(visitor)(#MEMBER_NAME, &this_type::MEMBER_NAME);
+
+#define VISIT_STRUCT_MEMBER_HELPER_TYPE(MEMBER_NAME)                                                                   \
+  std::forward<V>(visitor)(#MEMBER_NAME, visit_struct::type_c<decltype(this_type::MEMBER_NAME)>{});
+
+#define VISIT_STRUCT_MEMBER_HELPER_ACC(MEMBER_NAME)                                                                    \
+  std::forward<V>(visitor)(                                                                                            \
+    #MEMBER_NAME, visit_struct::accessor<decltype(&this_type::MEMBER_NAME), &this_type::MEMBER_NAME>{});
+
+#define VISIT_STRUCT_MEMBER_HELPER_PAIR(MEMBER_NAME)                                                                   \
+  std::forward<V>(visitor)(#MEMBER_NAME, std::forward<S1>(s1).MEMBER_NAME, std::forward<S2>(s2).MEMBER_NAME);
+
+#define VISIT_STRUCT_MAKE_GETTERS(MEMBER_NAME)                                                                         \
+  template <typename S>                                                                                                \
+  static VISIT_STRUCT_CONSTEXPR auto get_value(                                                                        \
+    std::integral_constant<int, fields_enum::MEMBER_NAME>, S &&s) -> decltype((std::forward<S>(s).MEMBER_NAME))        \
+  {                                                                                                                    \
+    return std::forward<S>(s).MEMBER_NAME;                                                                             \
+  }                                                                                                                    \
+                                                                                                                       \
+  static VISIT_STRUCT_CONSTEXPR auto get_name(                                                                         \
+    std::integral_constant<int, fields_enum::MEMBER_NAME>) -> decltype(#MEMBER_NAME)                                   \
+  {                                                                                                                    \
+    return #MEMBER_NAME;                                                                                               \
+  }                                                                                                                    \
+                                                                                                                       \
+  static VISIT_STRUCT_CONSTEXPR auto get_pointer(                                                                      \
+    std::integral_constant<int, fields_enum::MEMBER_NAME>) -> decltype(&this_type::MEMBER_NAME)                        \
+  {                                                                                                                    \
+    return &this_type::MEMBER_NAME;                                                                                    \
+  }                                                                                                                    \
+                                                                                                                       \
+  static VISIT_STRUCT_CONSTEXPR auto get_accessor(std::integral_constant<int, fields_enum::MEMBER_NAME>)               \
+    -> visit_struct::accessor<decltype(&this_type::MEMBER_NAME), &this_type::MEMBER_NAME>                              \
+  {                                                                                                                    \
+    return {};                                                                                                         \
+  }                                                                                                                    \
+                                                                                                                       \
+  static auto type_at(std::integral_constant<int, fields_enum::MEMBER_NAME>)                                           \
     ->visit_struct::type_c<decltype(this_type::MEMBER_NAME)>;
 
-  // This macro specializes the trait, provides "apply" method which does the work.
-  // Below, template parameter S should always be the same as STRUCT_NAME modulo const and
-  // reference. The interface defined above ensures that STRUCT_NAME is clean_t<S>
-  // basically.
+  // This macro specializes the trait, provides "apply" method which does the
+  // work. Below, template parameter S should always be the same as STRUCT_NAME
+  // modulo const and reference. The interface defined above ensures that
+  // STRUCT_NAME is clean_t<S> basically.
   //
-  // Note: The code to make the indexed getters work is more convoluted than I'd like.
-  //       PP_MAP doesn't give you the index of each member. And rather than hack it so
-  //       that it will do that, what we do instead is: 1: Declare an enum `field_enum` in
-  //       the scope of visitable, which maps names to indices.
-  //          This gives an easy way for the macro to get the index from the name token.
-  //       2: Intuitively we'd like to use template partial specialization to make indices
-  //       map to
-  //          values, and have a new specialization for each member. But, specializations
-  //          can only be made at namespace scope. So to keep things tidy and contained
-  //          within this trait, we use tag dispatch with std::integral_constant<int>
-  //          instead.
-
-#define VISITABLE_STRUCT(STRUCT_NAME, ...)                                               \
-  namespace visit_struct                                                                 \
-  {                                                                                      \
-    namespace traits                                                                     \
-    {                                                                                    \
-                                                                                         \
-      template <> struct visitable<STRUCT_NAME, void>                                    \
-      {                                                                                  \
-                                                                                         \
-        using this_type = STRUCT_NAME;                                                   \
-                                                                                         \
-        static VISIT_STRUCT_CONSTEXPR auto get_name() -> decltype(#STRUCT_NAME)          \
-        {                                                                                \
-          return #STRUCT_NAME;                                                           \
-        }                                                                                \
-                                                                                         \
-        static VISIT_STRUCT_CONSTEXPR const std::size_t field_count =                    \
-          0 VISIT_STRUCT_PP_MAP(VISIT_STRUCT_FIELD_COUNT, __VA_ARGS__);                  \
-                                                                                         \
-        template <typename V, typename S>                                                \
-        VISIT_STRUCT_CXX14_CONSTEXPR static void apply(V &&visitor, S &&struct_instance) \
-        {                                                                                \
-          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER, __VA_ARGS__)                   \
-        }                                                                                \
-                                                                                         \
-        template <typename V, typename S1, typename S2>                                  \
-        VISIT_STRUCT_CXX14_CONSTEXPR static void apply(V &&visitor, S1 &&s1, S2 &&s2)    \
-        {                                                                                \
-          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_PAIR, __VA_ARGS__)              \
-        }                                                                                \
-                                                                                         \
-        template <typename V>                                                            \
-        VISIT_STRUCT_CXX14_CONSTEXPR static void visit_pointers(V &&visitor)             \
-        {                                                                                \
-          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_PTR, __VA_ARGS__)               \
-        }                                                                                \
-                                                                                         \
-        template <typename V>                                                            \
-        VISIT_STRUCT_CXX14_CONSTEXPR static void visit_types(V &&visitor)                \
-        {                                                                                \
-          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_TYPE, __VA_ARGS__)              \
-        }                                                                                \
-                                                                                         \
-        template <typename V>                                                            \
-        VISIT_STRUCT_CXX14_CONSTEXPR static void visit_accessors(V &&visitor)            \
-        {                                                                                \
-          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_ACC, __VA_ARGS__)               \
-        }                                                                                \
-                                                                                         \
-        struct fields_enum                                                               \
-        {                                                                                \
-          enum index                                                                     \
-          {                                                                              \
-            __VA_ARGS__                                                                  \
-          };                                                                             \
-        };                                                                               \
-                                                                                         \
-        VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MAKE_GETTERS, __VA_ARGS__)                      \
-                                                                                         \
-        static VISIT_STRUCT_CONSTEXPR const bool value = true;                           \
-      };                                                                                 \
-    }                                                                                    \
-  }                                                                                      \
+  // Note: The code to make the indexed getters work is more convoluted than I'd
+  // like.
+  //       PP_MAP doesn't give you the index of each member. And rather than
+  //       hack it so that it will do that, what we do instead is: 1: Declare an
+  //       enum `field_enum` in the scope of visitable, which maps names to
+  //       indices.
+  //          This gives an easy way for the macro to get the index from the
+  //          name token.
+  //       2: Intuitively we'd like to use template partial specialization to
+  //       make indices map to
+  //          values, and have a new specialization for each member. But,
+  //          specializations can only be made at namespace scope. So to keep
+  //          things tidy and contained within this trait, we use tag dispatch
+  //          with std::integral_constant<int> instead.
+
+#define VISITABLE_STRUCT(STRUCT_NAME, ...)                                                                             \
+  namespace visit_struct                                                                                               \
+  {                                                                                                                    \
+    namespace traits                                                                                                   \
+    {                                                                                                                  \
+                                                                                                                       \
+      template <> struct visitable<STRUCT_NAME, void>                                                                  \
+      {                                                                                                                \
+                                                                                                                       \
+        using this_type = STRUCT_NAME;                                                                                 \
+                                                                                                                       \
+        static VISIT_STRUCT_CONSTEXPR auto get_name() -> decltype(#STRUCT_NAME) { return #STRUCT_NAME; }               \
+                                                                                                                       \
+        static VISIT_STRUCT_CONSTEXPR const std::size_t field_count =                                                  \
+          0 VISIT_STRUCT_PP_MAP(VISIT_STRUCT_FIELD_COUNT, __VA_ARGS__);                                                \
+                                                                                                                       \
+        template <typename V, typename S>                                                                              \
+        VISIT_STRUCT_CXX14_CONSTEXPR static void apply(V &&visitor, S &&struct_instance)                               \
+        {                                                                                                              \
+          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER, __VA_ARGS__)                                                 \
+        }                                                                                                              \
+                                                                                                                       \
+        template <typename V, typename S1, typename S2>                                                                \
+        VISIT_STRUCT_CXX14_CONSTEXPR static void apply(V &&visitor, S1 &&s1, S2 &&s2)                                  \
+        {                                                                                                              \
+          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_PAIR, __VA_ARGS__)                                            \
+        }                                                                                                              \
+                                                                                                                       \
+        template <typename V> VISIT_STRUCT_CXX14_CONSTEXPR static void visit_pointers(V &&visitor)                     \
+        {                                                                                                              \
+          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_PTR, __VA_ARGS__)                                             \
+        }                                                                                                              \
+                                                                                                                       \
+        template <typename V> VISIT_STRUCT_CXX14_CONSTEXPR static void visit_types(V &&visitor)                        \
+        {                                                                                                              \
+          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_TYPE, __VA_ARGS__)                                            \
+        }                                                                                                              \
+                                                                                                                       \
+        template <typename V> VISIT_STRUCT_CXX14_CONSTEXPR static void visit_accessors(V &&visitor)                    \
+        {                                                                                                              \
+          VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MEMBER_HELPER_ACC, __VA_ARGS__)                                             \
+        }                                                                                                              \
+                                                                                                                       \
+        struct fields_enum                                                                                             \
+        {                                                                                                              \
+          enum index                                                                                                   \
+          {                                                                                                            \
+            __VA_ARGS__                                                                                                \
+          };                                                                                                           \
+        };                                                                                                             \
+                                                                                                                       \
+        VISIT_STRUCT_PP_MAP(VISIT_STRUCT_MAKE_GETTERS, __VA_ARGS__)                                                    \
+                                                                                                                       \
+        static VISIT_STRUCT_CONSTEXPR const bool value = true;                                                         \
+      };                                                                                                               \
+    }                                                                                                                  \
+  }                                                                                                                    \
   static_assert(true, "")
 
 } // end namespace visit_struct
@@ -3202,23 +2963,23 @@ namespace visit_struct
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2019 - 2022 Daniil Goncharov <neargye@gmail.com>.
 //
-// Permission is hereby  granted, free of charge, to any  person obtaining a copy
-// of this software and associated  documentation files (the "Software"), to deal
-// in the Software  without restriction, including without  limitation the rights
-// to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
-// copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
-// furnished to do so, subject to the following conditions:
+// Permission is hereby  granted, free of charge, to any  person obtaining a
+// copy of this software and associated  documentation files (the "Software"),
+// to deal in the Software  without restriction, including without  limitation
+// the rights to  use, copy,  modify, merge,  publish, distribute,  sublicense,
+// and/or  sell copies  of  the Software,  and  to  permit persons  to  whom the
+// Software  is furnished to do so, subject to the following conditions:
 //
-// The above copyright notice and this permission notice shall be included in all
-// copies or substantial portions of the Software.
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
 //
-// THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
-// IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
-// FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
-// AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
-// LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
-// SOFTWARE.
+// THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS
+// OR IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN
+// NO EVENT  SHALL THE AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY
+// CLAIM,  DAMAGES OR  OTHER LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT
+// OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #ifndef NEARGYE_MAGIC_ENUM_HPP
 #define NEARGYE_MAGIC_ENUM_HPP
@@ -3229,8 +2990,8 @@ namespace visit_struct
 
 #include <array>
 #include <cassert>
-#include <cstdint>
 #include <cstddef>
+#include <cstdint>
 #include <iosfwd>
 #include <limits>
 #include <type_traits>
@@ -3255,8 +3016,7 @@ namespace visit_struct
 #pragma clang diagnostic push
 #elif defined(__GNUC__)
 #pragma GCC diagnostic push
-#pragma GCC diagnostic ignored                                                           \
-  "-Wmaybe-uninitialized" // May be used uninitialized 'return {};'.
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" // May be used uninitialized 'return {};'.
 #elif defined(_MSC_VER)
 #pragma warning(push)
 #pragma warning(disable : 26495) // Variable 'static_string<N>::chars_' is uninitialized.
@@ -3267,29 +3027,29 @@ namespace visit_struct
 #endif
 
 // Checks magic_enum compiler compatibility.
-#if defined(__clang__) && __clang_major__ >= 5 || defined(__GNUC__) && __GNUC__ >= 9     \
+#if defined(__clang__) && __clang_major__ >= 5 || defined(__GNUC__) && __GNUC__ >= 9                                   \
   || defined(_MSC_VER) && _MSC_VER >= 1910
 #undef MAGIC_ENUM_SUPPORTED
 #define MAGIC_ENUM_SUPPORTED 1
 #endif
 
 // Checks magic_enum compiler aliases compatibility.
-#if defined(__clang__) && __clang_major__ >= 5 || defined(__GNUC__) && __GNUC__ >= 9     \
+#if defined(__clang__) && __clang_major__ >= 5 || defined(__GNUC__) && __GNUC__ >= 9                                   \
   || defined(_MSC_VER) && _MSC_VER >= 1920
 #undef MAGIC_ENUM_SUPPORTED_ALIASES
 #define MAGIC_ENUM_SUPPORTED_ALIASES 1
 #endif
 
 // Enum value must be greater or equals than MAGIC_ENUM_RANGE_MIN. By default
-// MAGIC_ENUM_RANGE_MIN = -128. If need another min range for all enum types by default,
-// redefine the macro MAGIC_ENUM_RANGE_MIN.
+// MAGIC_ENUM_RANGE_MIN = -128. If need another min range for all enum types by
+// default, redefine the macro MAGIC_ENUM_RANGE_MIN.
 #if !defined(MAGIC_ENUM_RANGE_MIN)
 #define MAGIC_ENUM_RANGE_MIN -128
 #endif
 
 // Enum value must be less or equals than MAGIC_ENUM_RANGE_MAX. By default
-// MAGIC_ENUM_RANGE_MAX = 128. If need another max range for all enum types by default,
-// redefine the macro MAGIC_ENUM_RANGE_MAX.
+// MAGIC_ENUM_RANGE_MAX = 128. If need another max range for all enum types by
+// default, redefine the macro MAGIC_ENUM_RANGE_MAX.
 #if !defined(MAGIC_ENUM_RANGE_MAX)
 #define MAGIC_ENUM_RANGE_MAX 128
 #endif
@@ -3297,14 +3057,16 @@ namespace visit_struct
 namespace magic_enum
 {
 
-// If need another optional type, define the macro MAGIC_ENUM_USING_ALIAS_OPTIONAL.
+// If need another optional type, define the macro
+// MAGIC_ENUM_USING_ALIAS_OPTIONAL.
 #if defined(MAGIC_ENUM_USING_ALIAS_OPTIONAL)
   MAGIC_ENUM_USING_ALIAS_OPTIONAL
 #else
   using std::optional;
 #endif
 
-// If need another string_view type, define the macro MAGIC_ENUM_USING_ALIAS_STRING_VIEW.
+// If need another string_view type, define the macro
+// MAGIC_ENUM_USING_ALIAS_STRING_VIEW.
 #if defined(MAGIC_ENUM_USING_ALIAS_STRING_VIEW)
   MAGIC_ENUM_USING_ALIAS_STRING_VIEW
 #else
@@ -3321,26 +3083,24 @@ namespace magic_enum
   namespace customize
   {
 
-    // Enum value must be in range [MAGIC_ENUM_RANGE_MIN, MAGIC_ENUM_RANGE_MAX]. By
-    // default MAGIC_ENUM_RANGE_MIN = -128, MAGIC_ENUM_RANGE_MAX = 128. If need another
-    // range for all enum types by default, redefine the macro MAGIC_ENUM_RANGE_MIN and
-    // MAGIC_ENUM_RANGE_MAX. If need another range for specific enum type, add
-    // specialization enum_range for necessary enum type.
+    // Enum value must be in range [MAGIC_ENUM_RANGE_MIN, MAGIC_ENUM_RANGE_MAX].
+    // By default MAGIC_ENUM_RANGE_MIN = -128, MAGIC_ENUM_RANGE_MAX = 128. If
+    // need another range for all enum types by default, redefine the macro
+    // MAGIC_ENUM_RANGE_MIN and MAGIC_ENUM_RANGE_MAX. If need another range for
+    // specific enum type, add specialization enum_range for necessary enum
+    // type.
     template <typename E> struct enum_range
     {
-      static_assert(
-        std::is_enum_v<E>, "magic_enum::customize::enum_range requires enum type.");
+      static_assert(std::is_enum_v<E>, "magic_enum::customize::enum_range requires enum type.");
       static constexpr int min = MAGIC_ENUM_RANGE_MIN;
       static constexpr int max = MAGIC_ENUM_RANGE_MAX;
       static_assert(max > min, "magic_enum::customize::enum_range requires max > min.");
     };
 
     static_assert(
-      MAGIC_ENUM_RANGE_MAX > MAGIC_ENUM_RANGE_MIN,
-      "MAGIC_ENUM_RANGE_MAX must be greater than MAGIC_ENUM_RANGE_MIN.");
+      MAGIC_ENUM_RANGE_MAX > MAGIC_ENUM_RANGE_MIN, "MAGIC_ENUM_RANGE_MAX must be greater than MAGIC_ENUM_RANGE_MIN.");
     static_assert(
-      (MAGIC_ENUM_RANGE_MAX - MAGIC_ENUM_RANGE_MIN)
-        < (std::numeric_limits<std::uint16_t>::max)(),
+      (MAGIC_ENUM_RANGE_MAX - MAGIC_ENUM_RANGE_MIN) < (std::numeric_limits<std::uint16_t>::max)(),
       "MAGIC_ENUM_RANGE must be less than UINT16_MAX.");
 
     namespace detail
@@ -3353,27 +3113,20 @@ namespace magic_enum
       };
     } // namespace detail
 
-    using customize_t = std::
-      variant<string_view, detail::default_customize_tag, detail::invalid_customize_tag>;
+    using customize_t = std::variant<string_view, detail::default_customize_tag, detail::invalid_customize_tag>;
 
     // Default customize.
     inline constexpr auto default_tag = detail::default_customize_tag{};
     // Invalid customize.
     inline constexpr auto invalid_tag = detail::invalid_customize_tag{};
 
-    // If need custom names for enum, add specialization enum_name for necessary enum
-    // type.
-    template <typename E> constexpr customize_t enum_name(E) noexcept
-    {
-      return default_tag;
-    }
-
-    // If need custom type name for enum, add specialization enum_type_name for necessary
+    // If need custom names for enum, add specialization enum_name for necessary
     // enum type.
-    template <typename E> constexpr customize_t enum_type_name() noexcept
-    {
-      return default_tag;
-    }
+    template <typename E> constexpr customize_t enum_name(E) noexcept { return default_tag; }
+
+    // If need custom type name for enum, add specialization enum_type_name for
+    // necessary enum type.
+    template <typename E> constexpr customize_t enum_type_name() noexcept { return default_tag; }
 
   } // namespace customize
 
@@ -3387,8 +3140,7 @@ namespace magic_enum
 
     template <typename T>
     struct supported
-#if defined(MAGIC_ENUM_SUPPORTED) && MAGIC_ENUM_SUPPORTED                                \
-  || defined(MAGIC_ENUM_NO_CHECK_SUPPORT)
+#if defined(MAGIC_ENUM_SUPPORTED) && MAGIC_ENUM_SUPPORTED || defined(MAGIC_ENUM_NO_CHECK_SUPPORT)
       : std::true_type
     {};
 #else
@@ -3402,37 +3154,29 @@ namespace magic_enum
 
     template <typename T>
     struct has_is_flags<T, std::void_t<decltype(customize::enum_range<T>::is_flags)>>
-      : std::bool_constant<
-          std::is_same_v<bool, std::decay_t<decltype(customize::enum_range<T>::is_flags)>>>
+      : std::bool_constant<std::is_same_v<bool, std::decay_t<decltype(customize::enum_range<T>::is_flags)>>>
     {};
 
-    template <typename T, typename = void>
-    struct range_min : std::integral_constant<int, MAGIC_ENUM_RANGE_MIN>
+    template <typename T, typename = void> struct range_min : std::integral_constant<int, MAGIC_ENUM_RANGE_MIN>
     {};
 
     template <typename T>
     struct range_min<T, std::void_t<decltype(customize::enum_range<T>::min)>>
-      : std::integral_constant<
-          decltype(customize::enum_range<T>::min),
-          customize::enum_range<T>::min>
+      : std::integral_constant<decltype(customize::enum_range<T>::min), customize::enum_range<T>::min>
     {};
 
-    template <typename T, typename = void>
-    struct range_max : std::integral_constant<int, MAGIC_ENUM_RANGE_MAX>
+    template <typename T, typename = void> struct range_max : std::integral_constant<int, MAGIC_ENUM_RANGE_MAX>
     {};
 
     template <typename T>
     struct range_max<T, std::void_t<decltype(customize::enum_range<T>::max)>>
-      : std::integral_constant<
-          decltype(customize::enum_range<T>::max),
-          customize::enum_range<T>::max>
+      : std::integral_constant<decltype(customize::enum_range<T>::max), customize::enum_range<T>::max>
     {};
 
     template <std::size_t N> class static_string
     {
     public:
-      constexpr explicit static_string(string_view str) noexcept
-        : static_string{str, std::make_index_sequence<N>{}}
+      constexpr explicit static_string(string_view str) noexcept : static_string{str, std::make_index_sequence<N>{}}
       {
         assert(str.size() == N);
       }
@@ -3445,8 +3189,7 @@ namespace magic_enum
 
     private:
       template <std::size_t... I>
-      constexpr static_string(string_view str, std::index_sequence<I...>) noexcept
-        : chars_{str[I]..., '\0'}
+      constexpr static_string(string_view str, std::index_sequence<I...>) noexcept : chars_{str[I]..., '\0'}
       {}
 
       char chars_[N + 1];
@@ -3470,8 +3213,7 @@ namespace magic_enum
     {
       for (std::size_t i = name.size(); i > 0; --i)
         {
-          if (!((name[i - 1] >= '0' && name[i - 1] <= '9')
-                || (name[i - 1] >= 'a' && name[i - 1] <= 'z')
+          if (!((name[i - 1] >= '0' && name[i - 1] <= '9') || (name[i - 1] >= 'a' && name[i - 1] <= 'z')
                 || (name[i - 1] >= 'A' && name[i - 1] <= 'Z') ||
 #if defined(MAGIC_ENUM_ENABLE_NONASCII)
                 (name[i - 1] & 0x80) ||
@@ -3503,16 +3245,11 @@ namespace magic_enum
 
     public:
       template <typename L, typename R>
-      constexpr auto
-        operator()([[maybe_unused]] L lhs, [[maybe_unused]] R rhs) const noexcept
-        -> std::enable_if_t<
-          std::is_same_v<std::decay_t<L>, char> && std::is_same_v<std::decay_t<R>, char>,
-          bool>
+      constexpr auto operator()([[maybe_unused]] L lhs, [[maybe_unused]] R rhs) const noexcept
+        -> std::enable_if_t<std::is_same_v<std::decay_t<L>, char> && std::is_same_v<std::decay_t<R>, char>, bool>
       {
 #if defined(MAGIC_ENUM_ENABLE_NONASCII)
-        static_assert(
-          always_false_v<L, R>,
-          "magic_enum::case_insensitive not supported Non-ASCII feature.");
+        static_assert(always_false_v<L, R>, "magic_enum::case_insensitive not supported Non-ASCII feature.");
         return false;
 #else
         return to_lower(lhs) == to_lower(rhs);
@@ -3522,7 +3259,7 @@ namespace magic_enum
 
     constexpr std::size_t find(string_view str, char c) noexcept
     {
-#if defined(__clang__) && __clang_major__ < 9 && defined(__GLIBCXX__)                    \
+#if defined(__clang__) && __clang_major__ < 9 && defined(__GLIBCXX__)                                                  \
   || defined(_MSC_VER) && _MSC_VER < 1920 && !defined(__clang__)
       // https://stackoverflow.com/questions/56484834/constexpr-stdstring-viewfind-last-of-doesnt-work-on-clang-8-with-libstdc
       // https://developercommunity.visualstudio.com/content/problem/360432/vs20178-regression-c-failed-in-test.html
@@ -3546,17 +3283,14 @@ namespace magic_enum
     }
 
     template <typename T, std::size_t N, std::size_t... I>
-    constexpr std::array<std::remove_cv_t<T>, N>
-      to_array(T (&a)[N], std::index_sequence<I...>) noexcept
+    constexpr std::array<std::remove_cv_t<T>, N> to_array(T (&a)[N], std::index_sequence<I...>) noexcept
     {
       return {{a[I]...}};
     }
 
     template <typename BinaryPredicate> constexpr bool is_default_predicate() noexcept
     {
-      return std::is_same_v<
-               std::decay_t<BinaryPredicate>,
-               std::equal_to<string_view::value_type>>
+      return std::is_same_v<std::decay_t<BinaryPredicate>, std::equal_to<string_view::value_type>>
              || std::is_same_v<std::decay_t<BinaryPredicate>, std::equal_to<>>;
     }
 
@@ -3567,11 +3301,8 @@ namespace magic_enum
     }
 
     template <typename BinaryPredicate>
-    constexpr bool cmp_equal(
-      string_view lhs,
-      string_view rhs,
-      [[maybe_unused]] BinaryPredicate
-        &&p) noexcept(is_nothrow_invocable<BinaryPredicate>())
+    constexpr bool cmp_equal(string_view lhs, string_view rhs, [[maybe_unused]] BinaryPredicate &&p) noexcept(
+      is_nothrow_invocable<BinaryPredicate>())
     {
 #if defined(_MSC_VER) && _MSC_VER < 1920 && !defined(__clang__)
       // https://developercommunity.visualstudio.com/content/problem/360432/vs20178-regression-c-failed-in-test.html
@@ -3602,8 +3333,7 @@ namespace magic_enum
     template <typename L, typename R> constexpr bool cmp_less(L lhs, R rhs) noexcept
     {
       static_assert(
-        std::is_integral_v<L> && std::is_integral_v<R>,
-        "magic_enum::detail::cmp_less requires integral type.");
+        std::is_integral_v<L> && std::is_integral_v<R>, "magic_enum::detail::cmp_less requires integral type.");
 
       if constexpr (std::is_signed_v<L> == std::is_signed_v<R>)
         {
@@ -3620,20 +3350,21 @@ namespace magic_enum
         }
       else if constexpr (std::is_signed_v<R>)
         {
-          // If 'right' is negative, then result is 'false', otherwise cast & compare.
+          // If 'right' is negative, then result is 'false', otherwise cast &
+          // compare.
           return rhs > 0 && lhs < static_cast<std::make_unsigned_t<R>>(rhs);
         }
       else
         {
-          // If 'left' is negative, then result is 'true', otherwise cast & compare.
+          // If 'left' is negative, then result is 'true', otherwise cast &
+          // compare.
           return lhs < 0 || static_cast<std::make_unsigned_t<L>>(lhs) < rhs;
         }
     }
 
     template <typename I> constexpr I log2(I value) noexcept
     {
-      static_assert(
-        std::is_integral_v<I>, "magic_enum::detail::log2 requires integral type.");
+      static_assert(std::is_integral_v<I>, "magic_enum::detail::log2 requires integral type.");
 
       if constexpr (std::is_same_v<I, bool>)
         { // bool special case
@@ -3650,9 +3381,7 @@ namespace magic_enum
         }
     }
 
-    template <typename T>
-    inline constexpr bool is_enum_v =
-      std::is_enum_v<T> && std::is_same_v<T, std::decay_t<T>>;
+    template <typename T> inline constexpr bool is_enum_v = std::is_enum_v<T> && std::is_same_v<T, std::decay_t<T>>;
 
     template <typename E> constexpr auto n() noexcept
     {
@@ -3665,15 +3394,13 @@ namespace magic_enum
       if constexpr (custom.index() == 0)
         {
           constexpr auto name = std::get<string_view>(custom);
-          static_assert(
-            !name.empty(), "magic_enum::customize requires not empty string.");
+          static_assert(!name.empty(), "magic_enum::customize requires not empty string.");
           return static_string<name.size()>{name};
         }
       else if constexpr (custom.index() == 1 && supported<E>::value)
         {
 #if defined(__clang__) || defined(__GNUC__)
-          constexpr auto name =
-            pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
+          constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
 #elif defined(_MSC_VER)
           constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
 #else
@@ -3683,7 +3410,8 @@ namespace magic_enum
         }
       else
         {
-          return static_string<0>{}; // Unsupported compiler or Invalid customize.
+          return static_string<0>{}; // Unsupported compiler or Invalid
+                                     // customize.
         }
     }
 
@@ -3700,15 +3428,13 @@ namespace magic_enum
       if constexpr (custom.index() == 0)
         {
           constexpr auto name = std::get<string_view>(custom);
-          static_assert(
-            !name.empty(), "magic_enum::customize requires not empty string.");
+          static_assert(!name.empty(), "magic_enum::customize requires not empty string.");
           return static_string<name.size()>{name};
         }
       else if constexpr (custom.index() == 1 && supported<E>::value)
         {
 #if defined(__clang__) || defined(__GNUC__)
-          constexpr auto name =
-            pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
+          constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
 #elif defined(_MSC_VER)
           constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
 #else
@@ -3718,7 +3444,8 @@ namespace magic_enum
         }
       else
         {
-          return static_string<0>{}; // Unsupported compiler or Invalid customize.
+          return static_string<0>{}; // Unsupported compiler or Invalid
+                                     // customize.
         }
     }
 
@@ -3752,11 +3479,9 @@ namespace magic_enum
         }
     }
 
-    template <typename E, bool IsFlags, typename U = std::underlying_type_t<E>>
-    constexpr int reflected_min() noexcept
+    template <typename E, bool IsFlags, typename U = std::underlying_type_t<E>> constexpr int reflected_min() noexcept
     {
-      static_assert(
-        is_enum_v<E>, "magic_enum::detail::reflected_min requires enum type.");
+      static_assert(is_enum_v<E>, "magic_enum::detail::reflected_min requires enum type.");
 
       if constexpr (IsFlags)
         {
@@ -3774,11 +3499,9 @@ namespace magic_enum
         }
     }
 
-    template <typename E, bool IsFlags, typename U = std::underlying_type_t<E>>
-    constexpr int reflected_max() noexcept
+    template <typename E, bool IsFlags, typename U = std::underlying_type_t<E>> constexpr int reflected_max() noexcept
     {
-      static_assert(
-        is_enum_v<E>, "magic_enum::detail::reflected_max requires enum type.");
+      static_assert(is_enum_v<E>, "magic_enum::detail::reflected_max requires enum type.");
 
       if constexpr (IsFlags)
         {
@@ -3796,14 +3519,11 @@ namespace magic_enum
         }
     }
 
-    template <typename E, bool IsFlags>
-    inline constexpr auto reflected_min_v = reflected_min<E, IsFlags>();
+    template <typename E, bool IsFlags> inline constexpr auto reflected_min_v = reflected_min<E, IsFlags>();
 
-    template <typename E, bool IsFlags>
-    inline constexpr auto reflected_max_v = reflected_max<E, IsFlags>();
+    template <typename E, bool IsFlags> inline constexpr auto reflected_max_v = reflected_max<E, IsFlags>();
 
-    template <std::size_t N>
-    constexpr std::size_t values_count(const bool (&valid)[N]) noexcept
+    template <std::size_t N> constexpr std::size_t values_count(const bool (&valid)[N]) noexcept
     {
       auto count = std::size_t{0};
       for (std::size_t i = 0; i < N; ++i)
@@ -3817,7 +3537,7 @@ namespace magic_enum
     constexpr auto values(std::index_sequence<I...>) noexcept
     {
       static_assert(is_enum_v<E>, "magic_enum::detail::values requires enum type.");
-      constexpr bool valid[sizeof...(I)] = {is_valid<E, value<E, Min, IsFlags>(I)>()...};
+      constexpr bool        valid[sizeof...(I)] = {is_valid<E, value<E, Min, IsFlags>(I)>()...};
       constexpr std::size_t count = values_count(valid);
 
       if constexpr (count > 0)
@@ -3835,8 +3555,7 @@ namespace magic_enum
         }
     }
 
-    template <typename E, bool IsFlags, typename U = std::underlying_type_t<E>>
-    constexpr auto values() noexcept
+    template <typename E, bool IsFlags, typename U = std::underlying_type_t<E>> constexpr auto values() noexcept
     {
       static_assert(is_enum_v<E>, "magic_enum::detail::values requires enum type.");
       constexpr auto min = reflected_min_v<E, IsFlags>;
@@ -3844,18 +3563,14 @@ namespace magic_enum
       constexpr auto range_size = max - min + 1;
       static_assert(range_size > 0, "magic_enum::enum_range requires valid size.");
       static_assert(
-        range_size < (std::numeric_limits<std::uint16_t>::max)(),
-        "magic_enum::enum_range requires valid size.");
+        range_size < (std::numeric_limits<std::uint16_t>::max)(), "magic_enum::enum_range requires valid size.");
 
-      return values<E, IsFlags, reflected_min_v<E, IsFlags>>(
-        std::make_index_sequence<range_size>{});
+      return values<E, IsFlags, reflected_min_v<E, IsFlags>>(std::make_index_sequence<range_size>{});
     }
 
-    template <typename E, typename U = std::underlying_type_t<E>>
-    constexpr bool is_flags_enum() noexcept
+    template <typename E, typename U = std::underlying_type_t<E>> constexpr bool is_flags_enum() noexcept
     {
-      static_assert(
-        is_enum_v<E>, "magic_enum::detail::is_flags_enum requires enum type.");
+      static_assert(is_enum_v<E>, "magic_enum::detail::is_flags_enum requires enum type.");
 
       if constexpr (has_is_flags<E>::value)
         {
@@ -3887,55 +3602,41 @@ namespace magic_enum
 
     template <typename E> inline constexpr bool is_flags_v = is_flags_enum<E>();
 
-    template <typename E>
-    inline constexpr std::array values_v = values<E, is_flags_v<E>>();
+    template <typename E> inline constexpr std::array values_v = values<E, is_flags_v<E>>();
 
-    template <typename E, typename D = std::decay_t<E>>
-    using values_t = decltype((values_v<D>) );
+    template <typename E, typename D = std::decay_t<E>> using values_t = decltype((values_v<D>) );
 
     template <typename E> inline constexpr auto count_v = values_v<E>.size();
 
     template <typename E, typename U = std::underlying_type_t<E>>
-    inline constexpr auto min_v =
-      (count_v<E> > 0) ? static_cast<U>(values_v<E>.front()) : U{0};
+    inline constexpr auto min_v = (count_v<E> > 0) ? static_cast<U>(values_v<E>.front()) : U{0};
 
     template <typename E, typename U = std::underlying_type_t<E>>
-    inline constexpr auto max_v =
-      (count_v<E> > 0) ? static_cast<U>(values_v<E>.back()) : U{0};
+    inline constexpr auto max_v = (count_v<E> > 0) ? static_cast<U>(values_v<E>.back()) : U{0};
 
-    template <typename E, std::size_t... I>
-    constexpr auto names(std::index_sequence<I...>) noexcept
+    template <typename E, std::size_t... I> constexpr auto names(std::index_sequence<I...>) noexcept
     {
       static_assert(is_enum_v<E>, "magic_enum::detail::names requires enum type.");
 
       return std::array<string_view, sizeof...(I)>{{enum_name_v<E, values_v<E>[I]>...}};
     }
 
-    template <typename E>
-    inline constexpr std::array names_v =
-      names<E>(std::make_index_sequence<count_v<E>>{});
+    template <typename E> inline constexpr std::array names_v = names<E>(std::make_index_sequence<count_v<E>>{});
 
-    template <typename E, typename D = std::decay_t<E>>
-    using names_t = decltype((names_v<D>) );
+    template <typename E, typename D = std::decay_t<E>> using names_t = decltype((names_v<D>) );
 
-    template <typename E, std::size_t... I>
-    constexpr auto entries(std::index_sequence<I...>) noexcept
+    template <typename E, std::size_t... I> constexpr auto entries(std::index_sequence<I...>) noexcept
     {
       static_assert(is_enum_v<E>, "magic_enum::detail::entries requires enum type.");
 
-      return std::array<std::pair<E, string_view>, sizeof...(I)>{
-        {{values_v<E>[I], enum_name_v<E, values_v<E>[I]>}...}};
+      return std::array<std::pair<E, string_view>, sizeof...(I)>{{{values_v<E>[I], enum_name_v<E, values_v<E>[I]>}...}};
     }
 
-    template <typename E>
-    inline constexpr std::array entries_v =
-      entries<E>(std::make_index_sequence<count_v<E>>{});
+    template <typename E> inline constexpr std::array entries_v = entries<E>(std::make_index_sequence<count_v<E>>{});
 
-    template <typename E, typename D = std::decay_t<E>>
-    using entries_t = decltype((entries_v<D>) );
+    template <typename E, typename D = std::decay_t<E>> using entries_t = decltype((entries_v<D>) );
 
-    template <typename E, typename U = std::underlying_type_t<E>>
-    constexpr bool is_sparse() noexcept
+    template <typename E, typename U = std::underlying_type_t<E>> constexpr bool is_sparse() noexcept
     {
       static_assert(is_enum_v<E>, "magic_enum::detail::is_sparse requires enum type.");
 
@@ -3959,8 +3660,7 @@ namespace magic_enum
 
     template <typename E> inline constexpr bool is_sparse_v = is_sparse<E>();
 
-    template <typename E, typename U = std::underlying_type_t<E>>
-    constexpr U values_ors() noexcept
+    template <typename E, typename U = std::underlying_type_t<E>> constexpr U values_ors() noexcept
     {
       static_assert(is_enum_v<E>, "magic_enum::detail::values_ors requires enum type.");
 
@@ -3985,44 +3685,34 @@ namespace magic_enum
 
     template <typename T, typename R, typename BinaryPredicate = std::equal_to<>>
     using enable_if_t = typename enable_if_enum<
-      std::is_enum_v<std::decay_t<T>>
-        && std::is_invocable_r_v<bool, BinaryPredicate, char, char>,
+      std::is_enum_v<std::decay_t<T>> && std::is_invocable_r_v<bool, BinaryPredicate, char, char>,
       R>::type;
 
-    template <
-      typename T,
-      typename Enable = std::enable_if_t<std::is_enum_v<std::decay_t<T>>>>
-    using enum_concept = T;
+    template <typename T, typename Enable = std::enable_if_t<std::is_enum_v<std::decay_t<T>>>> using enum_concept = T;
 
-    template <typename T, bool = std::is_enum_v<T>>
-    struct is_scoped_enum : std::false_type
+    template <typename T, bool = std::is_enum_v<T>> struct is_scoped_enum : std::false_type
     {};
 
     template <typename T>
-    struct is_scoped_enum<T, true>
-      : std::bool_constant<!std::is_convertible_v<T, std::underlying_type_t<T>>>
+    struct is_scoped_enum<T, true> : std::bool_constant<!std::is_convertible_v<T, std::underlying_type_t<T>>>
     {};
 
-    template <typename T, bool = std::is_enum_v<T>>
-    struct is_unscoped_enum : std::false_type
+    template <typename T, bool = std::is_enum_v<T>> struct is_unscoped_enum : std::false_type
     {};
 
     template <typename T>
-    struct is_unscoped_enum<T, true>
-      : std::bool_constant<std::is_convertible_v<T, std::underlying_type_t<T>>>
+    struct is_unscoped_enum<T, true> : std::bool_constant<std::is_convertible_v<T, std::underlying_type_t<T>>>
     {};
 
     template <typename T, bool = std::is_enum_v<std::decay_t<T>>> struct underlying_type
     {};
 
-    template <typename T>
-    struct underlying_type<T, true> : std::underlying_type<std::decay_t<T>>
+    template <typename T> struct underlying_type<T, true> : std::underlying_type<std::decay_t<T>>
     {};
 
     template <typename Value, typename = void> struct constexpr_hash_t;
 
-    template <typename Value>
-    struct constexpr_hash_t<Value, std::enable_if_t<is_enum_v<Value>>>
+    template <typename Value> struct constexpr_hash_t<Value, std::enable_if_t<is_enum_v<Value>>>
     {
       constexpr auto operator()(Value value) const noexcept
       {
@@ -4040,53 +3730,41 @@ namespace magic_enum
       using secondary_hash = constexpr_hash_t;
     };
 
-    template <typename Value>
-    struct constexpr_hash_t<Value, std::enable_if_t<std::is_same_v<Value, string_view>>>
+    template <typename Value> struct constexpr_hash_t<Value, std::enable_if_t<std::is_same_v<Value, string_view>>>
     {
       static constexpr std::uint32_t crc_table[256]{
-        0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, 0x706af48fL,
-        0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, 0xe0d5e91eL, 0x97d2d988L,
-        0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L,
-        0xf3b97148L, 0x84be41deL, 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L,
-        0x136c9856L, 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
-        0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, 0xa2677172L,
-        0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, 0x35b5a8faL, 0x42b2986cL,
-        0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L,
-        0x26d930acL, 0x51de003aL, 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L,
-        0xcfba9599L, 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
-        0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, 0x01db7106L,
-        0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, 0x9fbfe4a5L, 0xe8b8d433L,
-        0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL,
-        0x91646c97L, 0xe6635c01L, 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL,
-        0x6c0695edL, 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
-        0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, 0xfbd44c65L,
-        0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, 0x4adfa541L, 0x3dd895d7L,
-        0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, 0x346ed9fcL, 0xad678846L, 0xda60b8d0L,
-        0x44042d73L, 0x33031de5L, 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL,
-        0xbe0b1010L, 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
-        0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, 0x2eb40d81L,
-        0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, 0x03b6e20cL, 0x74b1d29aL,
-        0xead54739L, 0x9dd277afL, 0x04db2615L, 0x73dc1683L, 0xe3630b12L, 0x94643b84L,
-        0x0d6d6a3eL, 0x7a6a5aa8L, 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L,
-        0xf00f9344L, 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
-        0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, 0x67dd4accL,
-        0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, 0xd6d6a3e8L, 0xa1d1937eL,
-        0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL,
-        0xd80d2bdaL, 0xaf0a1b4cL, 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L,
-        0x316e8eefL, 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
-        0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, 0xb2bd0b28L,
-        0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, 0x2cd99e8bL, 0x5bdeae1dL,
-        0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL,
-        0x72076785L, 0x05005713L, 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L,
-        0x92d28e9bL, 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
-        0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, 0x18b74777L,
-        0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, 0x8f659effL, 0xf862ae69L,
-        0x616bffd3L, 0x166ccf45L, 0xa00ae278L, 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L,
-        0xa7672661L, 0xd06016f7L, 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL,
-        0x40df0b66L, 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
-        0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, 0xcdd70693L,
-        0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, 0x5d681b02L, 0x2a6f2b94L,
-        0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, 0x2d02ef8dL};
+        0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, 0x706af48fL, 0xe963a535L, 0x9e6495a3L,
+        0x0edb8832L, 0x79dcb8a4L, 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, 0x90bf1d91L,
+        0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L,
+        0x136c9856L, 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, 0xfa0f3d63L, 0x8d080df5L,
+        0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
+        0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L,
+        0x26d930acL, 0x51de003aL, 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, 0xb8bda50fL,
+        0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL,
+        0x76dc4190L, 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, 0x9fbfe4a5L, 0xe8b8d433L,
+        0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
+        0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L,
+        0x65b0d9c6L, 0x12b7e950L, 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, 0xfbd44c65L,
+        0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL,
+        0x4369e96aL, 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, 0xaa0a4c5fL, 0xdd0d7cc9L,
+        0x5005713cL, 0x270241aaL, 0xbe0b1010L, 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
+        0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL,
+        0xedb88320L, 0x9abfb3b6L, 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, 0x73dc1683L,
+        0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L,
+        0xf00f9344L, 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, 0x196c3671L, 0x6e6b06e7L,
+        0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
+        0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL,
+        0xd80d2bdaL, 0xaf0a1b4cL, 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, 0x4669be79L,
+        0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL,
+        0xc5ba3bbeL, 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, 0x2cd99e8bL, 0x5bdeae1dL,
+        0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
+        0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L,
+        0x86d3d2d4L, 0xf1d4e242L, 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, 0x18b74777L,
+        0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L,
+        0xa00ae278L, 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, 0x4969474dL, 0x3e6e77dbL,
+        0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
+        0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, 0xcdd70693L, 0x54de5729L, 0x23d967bfL,
+        0xb3667a2eL, 0xc4614ab8L, 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, 0x2d02ef8dL};
 
       constexpr std::uint32_t operator()(string_view value) const noexcept
       {
@@ -4103,8 +3781,7 @@ namespace magic_enum
           auto acc = static_cast<std::uint64_t>(2166136261ULL);
           for (const auto c : value)
             {
-              acc = ((acc ^ static_cast<std::uint64_t>(c))
-                     * static_cast<std::uint64_t>(16777619ULL))
+              acc = ((acc ^ static_cast<std::uint64_t>(c)) * static_cast<std::uint64_t>(16777619ULL))
                     & std::numeric_limits<std::uint32_t>::max();
             }
           return static_cast<std::uint32_t>(acc);
@@ -4114,24 +3791,19 @@ namespace magic_enum
 
     template <typename Hash> constexpr static Hash hash_v{};
 
-    template <auto *GlobValues, typename Hash>
-    constexpr auto calculate_cases(std::size_t Page) noexcept
+    template <auto *GlobValues, typename Hash> constexpr auto calculate_cases(std::size_t Page) noexcept
     {
       constexpr std::array  values = *GlobValues;
       constexpr std::size_t size = values.size();
 
       using switch_t = std::invoke_result_t<Hash, typename decltype(values)::value_type>;
       static_assert(std::is_integral_v<switch_t> && !std::is_same_v<switch_t, bool>);
-      const std::size_t values_to =
-        (std::min)(static_cast<std::size_t>(256), size - Page);
+      const std::size_t values_to = (std::min)(static_cast<std::size_t>(256), size - Page);
 
       std::array<switch_t, 256> result{};
       auto                      fill = result.begin();
-      for (auto first = values.begin() + Page, last = values.begin() + Page + values_to;
-           first != last;)
-        {
-          *fill++ = hash_v<Hash>(*first++);
-        }
+      for (auto first = values.begin() + Page, last = values.begin() + Page + values_to; first != last;)
+        *fill++ = hash_v<Hash>(*first++);
 
       // dead cases, try to avoid case collisions
       for (switch_t last_value = result[values_to - 1];
@@ -4141,19 +3813,15 @@ namespace magic_enum
         }
 
       auto it = result.begin();
-      for (auto last_value = (std::numeric_limits<switch_t>::min)(); fill != result.end();
-           *fill++ = last_value)
-        {
-          while (last_value == *it)
-            ++last_value, ++it;
-        }
+      for (auto last_value = (std::numeric_limits<switch_t>::min)(); fill != result.end(); *fill++ = last_value)
+        while (last_value == *it)
+          ++last_value, ++it;
 
       return result;
     }
 
     template <typename R, typename F, typename... Args>
-    constexpr R invoke_r(F &&f, Args &&...args) noexcept(
-      std::is_nothrow_invocable_r_v<R, F, Args...>)
+    constexpr R invoke_r(F &&f, Args &&...args) noexcept(std::is_nothrow_invocable_r_v<R, F, Args...>)
     {
       if constexpr (std::is_void_v<R>)
         std::forward<F>(f)(std::forward<Args>(args)...);
@@ -4203,112 +3871,94 @@ namespace magic_enum
       return true;
     }
 
-#define MAGIC_ENUM_FOR_EACH_256(T)                                                       \
-  T(0)                                                                                   \
-  T(1)                                                                                   \
-  T(2) T(3) T(4) T(5) T(6) T(7) T(8) T(9) T(10) T(11) T(12) T(13) T(14) T(15) T(16)      \
-    T(17) T(18) T(19) T(20) T(21) T(22) T(23) T(24) T(25) T(26) T(27) T(28) T(29) T(30)  \
-      T(31) T(32) T(33) T(34) T(35) T(36) T(37) T(38) T(39) T(40) T(41) T(42) T(43)      \
-        T(44) T(45) T(46) T(47) T(48) T(49) T(50) T(51) T(52) T(53) T(54) T(55) T(56)    \
-          T(57) T(58) T(59) T(60) T(61) T(62) T(63) T(64) T(65) T(66) T(67) T(68) T(69)  \
-            T(70) T(71) T(72) T(73) T(74) T(75) T(76) T(77) T(78) T(79) T(80) T(81)      \
-              T(82) T(83) T(84) T(85) T(86) T(87) T(88) T(89) T(90) T(91) T(92) T(93)    \
-                T(94) T(95) T(96) T(97) T(98) T(99) T(100) T(101) T(102) T(103) T(104)   \
-                  T(105) T(106) T(107) T(108) T(109) T(110) T(111) T(112) T(113) T(114)  \
-                    T(115) T(116) T(117) T(118) T(119) T(120) T(121) T(122) T(123)       \
-                      T(124) T(125) T(126) T(127) T(128) T(129) T(130) T(131) T(132)     \
-                        T(133) T(134) T(135) T(136) T(137) T(138) T(139) T(140) T(141)   \
-                          T(142) T(143) T(144) T(145) T(146) T(147) T(148) T(149) T(150) \
-                            T(151) T(152) T(153) T(154) T(155) T(156) T(157) T(158)      \
-                              T(159) T(160) T(161) T(162) T(163) T(164) T(165) T(166)    \
-                                T(167) T(168) T(169) T(170) T(171) T(172) T(173) T(174)  \
-                                  T(175) T(176) T(177) T(178) T(179) T(180) T(181)       \
-                                    T(182) T(183) T(184) T(185) T(186) T(187) T(188)     \
-                                      T(189) T(190) T(191) T(192) T(193) T(194) T(195)   \
-                                        T(196) T(197) T(198) T(199) T(200) T(201) T(202) \
-                                          T(203) T(204) T(205) T(206) T(207) T(208)      \
-                                            T(209) T(210) T(211) T(212) T(213) T(214)    \
-                                              T(215) T(216) T(217) T(218) T(219) T(220)  \
-                                                T(221) T(222) T(223) T(224) T(225)       \
-                                                  T(226) T(227) T(228) T(229) T(230)     \
-                                                    T(231) T(232) T(233) T(234) T(235)   \
-                                                      T(236) T(237) T(238) T(239) T(240) \
-                                                        T(241) T(242) T(243) T(244)      \
-                                                          T(245) T(246) T(247) T(248)    \
-                                                            T(249) T(250) T(251) T(252)  \
-                                                              T(253) T(254) T(255)
-
-#define MAGIC_ENUM_CASE(val)                                                             \
-  case cases[val]:                                                                       \
-    if constexpr ((val) + Page < size)                                                   \
-      {                                                                                  \
-        if (!pred(values[val + Page], searched))                                         \
-          {                                                                              \
-            break;                                                                       \
-          }                                                                              \
-        if constexpr (CallValue == case_call_t::index)                                   \
-          {                                                                              \
-            if constexpr (std::is_invocable_r_v<                                         \
-                            result_t,                                                    \
-                            Lambda,                                                      \
-                            std::integral_constant<std::size_t, val + Page>>)            \
-              {                                                                          \
-                return detail::invoke_r<result_t>(                                       \
-                  std::forward<Lambda>(lambda),                                          \
-                  std::integral_constant<std::size_t, val + Page>{});                    \
-              }                                                                          \
-            else if constexpr (std::is_invocable_v<                                      \
-                                 Lambda,                                                 \
-                                 std::integral_constant<std::size_t, val + Page>>)       \
-              {                                                                          \
-                assert(                                                                  \
-                  false && "magic_enum::detail::constexpr_switch wrong result type.");   \
-              }                                                                          \
-          }                                                                              \
-        else if constexpr (CallValue == case_call_t::value)                              \
-          {                                                                              \
-            if constexpr (std::is_invocable_r_v<                                         \
-                            result_t,                                                    \
-                            Lambda,                                                      \
-                            enum_constant<values[val + Page]>>)                          \
-              {                                                                          \
-                return detail::invoke_r<result_t>(                                       \
-                  std::forward<Lambda>(lambda), enum_constant<values[val + Page]>{});    \
-              }                                                                          \
-            else if constexpr (std::is_invocable_r_v<                                    \
-                                 result_t,                                               \
-                                 Lambda,                                                 \
-                                 enum_constant<values[val + Page]>>)                     \
-              {                                                                          \
-                assert(                                                                  \
-                  false && "magic_enum::detail::constexpr_switch wrong result type.");   \
-              }                                                                          \
-          }                                                                              \
-        break;                                                                           \
-      }                                                                                  \
-    else                                                                                 \
+#define MAGIC_ENUM_FOR_EACH_256(T)                                                                                     \
+  T(0)                                                                                                                 \
+  T(1)                                                                                                                 \
+  T(2)                                                                                                                 \
+  T(3)                                                                                                                 \
+  T(4)                                                                                                                 \
+  T(5)                                                                                                                 \
+  T(6)                                                                                                                 \
+  T(7)                                                                                                                 \
+  T(8)                                                                                                                 \
+  T(9)                                                                                                                 \
+  T(10)                                                                                                                \
+  T(11) T(12) T(13) T(14) T(15) T(16) T(17) T(18) T(19) T(20) T(21) T(22) T(23) T(24) T(25) T(26) T(27) T(28) T(29)    \
+    T(30) T(31) T(32) T(33) T(34) T(35) T(36) T(37) T(38) T(39) T(40) T(41) T(42) T(43) T(44) T(45) T(46) T(47) T(48)  \
+      T(49) T(50) T(51) T(52) T(53) T(54) T(55) T(56) T(57) T(58) T(59) T(60) T(61) T(62) T(63) T(64) T(65) T(66)      \
+        T(67) T(68) T(69) T(70) T(71) T(72) T(73) T(74) T(75) T(76) T(77) T(78) T(79) T(80) T(81) T(82) T(83) T(84)    \
+          T(85) T(86) T(87) T(88) T(89) T(90) T(91) T(92) T(93) T(94) T(95) T(96) T(97) T(98) T(99) T(100) T(101)      \
+            T(102) T(103) T(104) T(105) T(106) T(107) T(108) T(109) T(110) T(111) T(112) T(113) T(114) T(115) T(116)   \
+              T(117) T(118) T(119) T(120) T(121) T(122) T(123) T(124) T(125) T(126) T(127) T(128) T(129) T(130) T(131) \
+                T(132) T(133) T(134) T(135) T(136) T(137) T(138) T(139) T(140) T(141) T(142) T(143) T(144) T(145)      \
+                  T(146) T(147) T(148) T(149) T(150) T(151) T(152) T(153) T(154) T(155) T(156) T(157) T(158) T(159)    \
+                    T(160) T(161) T(162) T(163) T(164) T(165) T(166) T(167) T(168) T(169) T(170) T(171) T(172) T(173)  \
+                      T(174) T(175) T(176) T(177) T(178) T(179) T(180) T(181) T(182) T(183) T(184) T(185) T(186)       \
+                        T(187) T(188) T(189) T(190) T(191) T(192) T(193) T(194) T(195) T(196) T(197) T(198) T(199)     \
+                          T(200) T(201) T(202) T(203) T(204) T(205) T(206) T(207) T(208) T(209) T(210) T(211) T(212)   \
+                            T(213) T(214) T(215) T(216) T(217) T(218) T(219) T(220) T(221) T(222) T(223) T(224) T(225) \
+                              T(226) T(227) T(228) T(229) T(230) T(231) T(232) T(233) T(234) T(235) T(236) T(237)      \
+                                T(238) T(239) T(240) T(241) T(242) T(243) T(244) T(245) T(246) T(247) T(248) T(249)    \
+                                  T(250) T(251) T(252) T(253) T(254) T(255)
+
+#define MAGIC_ENUM_CASE(val)                                                                                           \
+  case cases[val]:                                                                                                     \
+    if constexpr ((val) + Page < size)                                                                                 \
+      {                                                                                                                \
+        if (!pred(values[val + Page], searched))                                                                       \
+          {                                                                                                            \
+            break;                                                                                                     \
+          }                                                                                                            \
+        if constexpr (CallValue == case_call_t::index)                                                                 \
+          {                                                                                                            \
+            if constexpr (std::is_invocable_r_v<result_t, Lambda, std::integral_constant<std::size_t, val + Page>>)    \
+              {                                                                                                        \
+                return detail::invoke_r<result_t>(                                                                     \
+                  std::forward<Lambda>(lambda), std::integral_constant<std::size_t, val + Page>{});                    \
+              }                                                                                                        \
+            else if constexpr (std::is_invocable_v<Lambda, std::integral_constant<std::size_t, val + Page>>)           \
+              {                                                                                                        \
+                assert(                                                                                                \
+                  false                                                                                                \
+                  && "magic_enum::detail::constexpr_switch wrong result "                                              \
+                     "type.");                                                                                         \
+              }                                                                                                        \
+          }                                                                                                            \
+        else if constexpr (CallValue == case_call_t::value)                                                            \
+          {                                                                                                            \
+            if constexpr (std::is_invocable_r_v<result_t, Lambda, enum_constant<values[val + Page]>>)                  \
+              {                                                                                                        \
+                return detail::invoke_r<result_t>(std::forward<Lambda>(lambda), enum_constant<values[val + Page]>{});  \
+              }                                                                                                        \
+            else if constexpr (std::is_invocable_r_v<result_t, Lambda, enum_constant<values[val + Page]>>)             \
+              {                                                                                                        \
+                assert(                                                                                                \
+                  false                                                                                                \
+                  && "magic_enum::detail::constexpr_switch wrong result "                                              \
+                     "type.");                                                                                         \
+              }                                                                                                        \
+          }                                                                                                            \
+        break;                                                                                                         \
+      }                                                                                                                \
+    else                                                                                                               \
       [[fallthrough]];
 
     template <
       auto       *GlobValues,
       case_call_t CallValue,
       std::size_t Page = 0,
-      typename Hash =
-        constexpr_hash_t<typename std::decay_t<decltype(*GlobValues)>::value_type>,
+      typename Hash = constexpr_hash_t<typename std::decay_t<decltype(*GlobValues)>::value_type>,
       typename Lambda,
       typename ResultGetterType = decltype(default_result_type_lambda<>),
       typename BinaryPredicate = std::equal_to<>>
     constexpr std::invoke_result_t<ResultGetterType> constexpr_switch(
       Lambda                                                 &&lambda,
       typename std::decay_t<decltype(*GlobValues)>::value_type searched,
-      ResultGetterType &&def = default_result_type_lambda<>,
-      BinaryPredicate  &&pred = {})
+      ResultGetterType                                       &&def = default_result_type_lambda<>,
+      BinaryPredicate                                        &&pred = {})
     {
       using result_t = std::invoke_result_t<ResultGetterType>;
-      using hash_t = std::conditional_t<
-        no_duplicate<GlobValues, Hash>(),
-        Hash,
-        typename Hash::secondary_hash>;
+      using hash_t = std::conditional_t<no_duplicate<GlobValues, Hash>(), Hash, typename Hash::secondary_hash>;
       constexpr std::array  values = *GlobValues;
       constexpr std::size_t size = values.size();
       constexpr std::array  cases = calculate_cases<GlobValues, hash_t>(Page);
@@ -4320,9 +3970,7 @@ namespace magic_enum
           if constexpr (size > 256 + Page)
             {
               return constexpr_switch<GlobValues, CallValue, Page + 256, Hash>(
-                std::forward<Lambda>(lambda),
-                searched,
-                std::forward<ResultGetterType>(def));
+                std::forward<Lambda>(lambda), searched, std::forward<ResultGetterType>(def));
             }
           break;
         }
@@ -4337,8 +3985,7 @@ namespace magic_enum
     {
       static_assert(is_enum_v<E>, "magic_enum::detail::for_each requires enum type.");
       constexpr bool has_void_return =
-        (std::is_void_v<std::invoke_result_t<Lambda, enum_constant<values_v<E>[I]>>>
-         || ...);
+        (std::is_void_v<std::invoke_result_t<Lambda, enum_constant<values_v<E>[I]>>> || ...);
       constexpr bool all_same_return =
         (std::is_same_v<
            std::invoke_result_t<Lambda, enum_constant<values_v<E>[0]>>,
@@ -4354,8 +4001,7 @@ namespace magic_enum
     }
 
     template <typename E, typename Lambda, typename D = std::decay_t<E>>
-    using for_each_t = decltype(for_each<D>(
-      std::declval<Lambda>(), std::make_index_sequence<count_v<D>>{}));
+    using for_each_t = decltype(for_each<D>(std::declval<Lambda>(), std::make_index_sequence<count_v<D>>{}));
 
   } // namespace detail
 
@@ -4365,17 +4011,18 @@ namespace magic_enum
   template <typename T> using Enum = detail::enum_concept<T>;
 
   // Checks whether T is an Unscoped enumeration type.
-  // Provides the member constant value which is equal to true, if T is an [Unscoped
+  // Provides the member constant value which is equal to true, if T is an
+  // [Unscoped
   // enumeration](https://en.cppreference.com/w/cpp/language/enum#Unscoped_enumeration)
   // type. Otherwise, value is equal to false.
   template <typename T> struct is_unscoped_enum : detail::is_unscoped_enum<T>
   {};
 
-  template <typename T>
-  inline constexpr bool is_unscoped_enum_v = is_unscoped_enum<T>::value;
+  template <typename T> inline constexpr bool is_unscoped_enum_v = is_unscoped_enum<T>::value;
 
   // Checks whether T is an Scoped enumeration type.
-  // Provides the member constant value which is equal to true, if T is an [Scoped
+  // Provides the member constant value which is equal to true, if T is an
+  // [Scoped
   // enumeration](https://en.cppreference.com/w/cpp/language/enum#Scoped_enumerations)
   // type. Otherwise, value is equal to false.
   template <typename T> struct is_scoped_enum : detail::is_scoped_enum<T>
@@ -4383,9 +4030,10 @@ namespace magic_enum
 
   template <typename T> inline constexpr bool is_scoped_enum_v = is_scoped_enum<T>::value;
 
-  // If T is a complete enumeration type, provides a member typedef type that names the
-  // underlying type of T. Otherwise, if T is not an enumeration type, there is no member
-  // type. Otherwise (T is an incomplete enumeration type), the program is ill-formed.
+  // If T is a complete enumeration type, provides a member typedef type that
+  // names the underlying type of T. Otherwise, if T is not an enumeration type,
+  // there is no member type. Otherwise (T is an incomplete enumeration type),
+  // the program is ill-formed.
   template <typename T> struct underlying_type : detail::underlying_type<T>
   {};
 
@@ -4394,30 +4042,25 @@ namespace magic_enum
   template <auto V> using enum_constant = detail::enum_constant<V>;
 
   // Returns type name of enum.
-  template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_type_name() noexcept -> detail::enable_if_t<E, string_view>
+  template <typename E> [[nodiscard]] constexpr auto enum_type_name() noexcept -> detail::enable_if_t<E, string_view>
   {
     constexpr string_view name = detail::type_name_v<std::decay_t<E>>;
-    static_assert(
-      !name.empty(), "magic_enum::enum_type_name enum type does not have a name.");
+    static_assert(!name.empty(), "magic_enum::enum_type_name enum type does not have a name.");
 
     return name;
   }
 
   // Returns number of enum values.
-  template <typename E>
-  [[nodiscard]] constexpr auto enum_count() noexcept -> detail::enable_if_t<E, std::size_t>
+  template <typename E> [[nodiscard]] constexpr auto enum_count() noexcept -> detail::enable_if_t<E, std::size_t>
   {
     return detail::count_v<std::decay_t<E>>;
   }
 
   // Returns enum value at specified index.
-  // No bounds checking is performed: the behavior is undefined if index >= number of enum
-  // values.
+  // No bounds checking is performed: the behavior is undefined if index >=
+  // number of enum values.
   template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_value(std::size_t index) noexcept -> detail::enable_if_t<E, std::decay_t<E>>
+  [[nodiscard]] constexpr auto enum_value(std::size_t index) noexcept -> detail::enable_if_t<E, std::decay_t<E>>
   {
     using D = std::decay_t<E>;
 
@@ -4430,15 +4073,13 @@ namespace magic_enum
         constexpr bool is_flag = detail::is_flags_v<D>;
         constexpr auto min = is_flag ? detail::log2(detail::min_v<D>) : detail::min_v<D>;
 
-        return assert((index < detail::count_v<D>) ),
-               detail::value<D, min, is_flag>(index);
+        return assert((index < detail::count_v<D>) ), detail::value<D, min, is_flag>(index);
       }
   }
 
   // Returns enum value at specified index.
   template <typename E, std::size_t I>
-  [[nodiscard]] constexpr auto
-    enum_value() noexcept -> detail::enable_if_t<E, std::decay_t<E>>
+  [[nodiscard]] constexpr auto enum_value() noexcept -> detail::enable_if_t<E, std::decay_t<E>>
   {
     using D = std::decay_t<E>;
     static_assert(I < detail::count_v<D>, "magic_enum::enum_value out of range.");
@@ -4448,24 +4089,21 @@ namespace magic_enum
 
   // Returns std::array with enum values, sorted by enum value.
   template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_values() noexcept -> detail::enable_if_t<E, detail::values_t<E>>
+  [[nodiscard]] constexpr auto enum_values() noexcept -> detail::enable_if_t<E, detail::values_t<E>>
   {
     return detail::values_v<std::decay_t<E>>;
   }
 
   // Returns integer value from enum value.
   template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_integer(E value) noexcept -> detail::enable_if_t<E, underlying_type_t<E>>
+  [[nodiscard]] constexpr auto enum_integer(E value) noexcept -> detail::enable_if_t<E, underlying_type_t<E>>
   {
     return static_cast<underlying_type_t<E>>(value);
   }
 
   // Returns underlying value from enum value.
   template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_underlying(E value) noexcept -> detail::enable_if_t<E, underlying_type_t<E>>
+  [[nodiscard]] constexpr auto enum_underlying(E value) noexcept -> detail::enable_if_t<E, underlying_type_t<E>>
   {
     return static_cast<underlying_type_t<E>>(value);
   }
@@ -4473,8 +4111,7 @@ namespace magic_enum
   // Obtains index in enum values from enum value.
   // Returns optional with index.
   template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_index(E value) noexcept -> detail::enable_if_t<E, optional<std::size_t>>
+  [[nodiscard]] constexpr auto enum_index(E value) noexcept -> detail::enable_if_t<E, optional<std::size_t>>
   {
     using D = std::decay_t<E>;
     using U = underlying_type_t<D>;
@@ -4486,9 +4123,9 @@ namespace magic_enum
     else if constexpr (detail::is_sparse_v<D> || detail::is_flags_v<D>)
       {
         return detail::constexpr_switch<&detail::values_v<D>, detail::case_call_t::index>(
-          [](std::size_t i) {
-          return optional<std::size_t>{i};
-        }, value, detail::default_result_type_lambda<optional<std::size_t>>);
+          [](std::size_t i) { return optional<std::size_t>{i}; },
+          value,
+          detail::default_result_type_lambda<optional<std::size_t>>);
       }
     else
       {
@@ -4500,24 +4137,20 @@ namespace magic_enum
   }
 
   // Returns name from static storage enum variable.
-  // This version is much lighter on the compile times and is not restricted to the
-  // enum_range limitation.
-  template <auto V>
-  [[nodiscard]] constexpr auto
-    enum_name() noexcept -> detail::enable_if_t<decltype(V), string_view>
+  // This version is much lighter on the compile times and is not restricted to
+  // the enum_range limitation.
+  template <auto V> [[nodiscard]] constexpr auto enum_name() noexcept -> detail::enable_if_t<decltype(V), string_view>
   {
     constexpr string_view name = detail::enum_name_v<std::decay_t<decltype(V)>, V>;
-    static_assert(
-      !name.empty(), "magic_enum::enum_name enum value does not have a name.");
+    static_assert(!name.empty(), "magic_enum::enum_name enum value does not have a name.");
 
     return name;
   }
 
   // Returns name from enum value.
-  // If enum value does not have name or value out of range, returns empty string.
-  template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_name(E value) noexcept -> detail::enable_if_t<E, string_view>
+  // If enum value does not have name or value out of range, returns empty
+  // string.
+  template <typename E> [[nodiscard]] constexpr auto enum_name(E value) noexcept -> detail::enable_if_t<E, string_view>
   {
     using D = std::decay_t<E>;
 
@@ -4527,9 +4160,9 @@ namespace magic_enum
   }
 
   // Returns name from enum-flags value.
-  // If enum-flags value does not have name or value out of range, returns empty string.
-  template <typename E>
-  [[nodiscard]] auto enum_flags_name(E value) -> detail::enable_if_t<E, string>
+  // If enum-flags value does not have name or value out of range, returns empty
+  // string.
+  template <typename E> [[nodiscard]] auto enum_flags_name(E value) -> detail::enable_if_t<E, string>
   {
     using D = std::decay_t<E>;
     using U = underlying_type_t<D>;
@@ -4540,8 +4173,7 @@ namespace magic_enum
         auto   check_value = U{0};
         for (std::size_t i = 0; i < detail::count_v<D>; ++i)
           {
-            if (const auto v = static_cast<U>(enum_value<D>(i));
-                (static_cast<U>(value) & v) != 0)
+            if (const auto v = static_cast<U>(enum_value<D>(i)); (static_cast<U>(value) & v) != 0)
               {
                 check_value |= v;
                 const auto n = detail::names_v<D>[i];
@@ -4563,17 +4195,14 @@ namespace magic_enum
   }
 
   // Returns std::array with names, sorted by enum value.
-  template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_names() noexcept -> detail::enable_if_t<E, detail::names_t<E>>
+  template <typename E> [[nodiscard]] constexpr auto enum_names() noexcept -> detail::enable_if_t<E, detail::names_t<E>>
   {
     return detail::names_v<std::decay_t<E>>;
   }
 
   // Returns std::array with pairs (value, name), sorted by enum value.
   template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_entries() noexcept -> detail::enable_if_t<E, detail::entries_t<E>>
+  [[nodiscard]] constexpr auto enum_entries() noexcept -> detail::enable_if_t<E, detail::entries_t<E>>
   {
     return detail::entries_v<std::decay_t<E>>;
   }
@@ -4607,17 +4236,16 @@ namespace magic_enum
           }
         else
           {
-            return detail::
-              constexpr_switch<&detail::values_v<D>, detail::case_call_t::value>([](D v) {
-              return optional<D>{v};
-            }, static_cast<D>(value), detail::default_result_type_lambda<optional<D>>);
+            return detail::constexpr_switch<&detail::values_v<D>, detail::case_call_t::value>(
+              [](D v) { return optional<D>{v}; },
+              static_cast<D>(value),
+              detail::default_result_type_lambda<optional<D>>);
           }
       }
     else
       {
         constexpr auto min = detail::min_v<D>;
-        constexpr auto max =
-          detail::is_flags_v<D> ? detail::values_ors<D>() : detail::max_v<D>;
+        constexpr auto max = detail::is_flags_v<D> ? detail::values_ors<D>() : detail::max_v<D>;
 
         if (value >= min && value <= max)
           return static_cast<D>(value);
@@ -4625,16 +4253,16 @@ namespace magic_enum
       }
   }
 
-  // Allows you to write magic_enum::enum_cast<foo>("bar", magic_enum::case_insensitive);
+  // Allows you to write magic_enum::enum_cast<foo>("bar",
+  // magic_enum::case_insensitive);
   inline constexpr auto case_insensitive = detail::case_insensitive{};
 
   // Obtains enum value from name.
   // Returns optional with enum value.
   template <typename E, typename BinaryPredicate = std::equal_to<>>
-  [[nodiscard]] constexpr auto
-    enum_cast(string_view value, [[maybe_unused]] BinaryPredicate &&p = {}) noexcept(
-      detail::is_nothrow_invocable<BinaryPredicate>())
-      -> detail::enable_if_t<E, optional<std::decay_t<E>>, BinaryPredicate>
+  [[nodiscard]] constexpr auto enum_cast(string_view value, [[maybe_unused]] BinaryPredicate &&p = {}) noexcept(
+    detail::is_nothrow_invocable<BinaryPredicate>())
+    -> detail::enable_if_t<E, optional<std::decay_t<E>>, BinaryPredicate>
   {
     static_assert(
       std::is_invocable_r_v<bool, BinaryPredicate, char, char>,
@@ -4676,14 +4304,11 @@ namespace magic_enum
       {
         if constexpr (detail::is_default_predicate<BinaryPredicate>())
           {
-            return detail::
-              constexpr_switch<&detail::names_v<D>, detail::case_call_t::index>(
-                [](std::size_t i) { return optional<D>{detail::values_v<D>[i]}; },
-                value,
-                detail::default_result_type_lambda<optional<D>>,
-                [&p](string_view lhs, string_view rhs) {
-              return detail::cmp_equal(lhs, rhs, p);
-            });
+            return detail::constexpr_switch<&detail::names_v<D>, detail::case_call_t::index>(
+              [](std::size_t i) { return optional<D>{detail::values_v<D>[i]}; },
+              value,
+              detail::default_result_type_lambda<optional<D>>,
+              [&p](string_view lhs, string_view rhs) { return detail::cmp_equal(lhs, rhs, p); });
           }
         else
           {
@@ -4696,9 +4321,7 @@ namespace magic_enum
   }
 
   // Obtains index in enum values from static storage enum variable.
-  template <auto V>
-  [[nodiscard]] constexpr auto
-    enum_index() noexcept -> detail::enable_if_t<decltype(V), std::size_t>
+  template <auto V> [[nodiscard]] constexpr auto enum_index() noexcept -> detail::enable_if_t<decltype(V), std::size_t>
   {
     constexpr auto index = enum_index<std::decay_t<decltype(V)>>(V);
     static_assert(index, "magic_enum::enum_index enum value does not have a index.");
@@ -4707,9 +4330,7 @@ namespace magic_enum
   }
 
   // Checks whether enum contains enumerator with such enum value.
-  template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_contains(E value) noexcept -> detail::enable_if_t<E, bool>
+  template <typename E> [[nodiscard]] constexpr auto enum_contains(E value) noexcept -> detail::enable_if_t<E, bool>
   {
     using D = std::decay_t<E>;
     using U = underlying_type_t<D>;
@@ -4719,8 +4340,7 @@ namespace magic_enum
 
   // Checks whether enum contains enumerator with such integer value.
   template <typename E>
-  [[nodiscard]] constexpr auto
-    enum_contains(underlying_type_t<E> value) noexcept -> detail::enable_if_t<E, bool>
+  [[nodiscard]] constexpr auto enum_contains(underlying_type_t<E> value) noexcept -> detail::enable_if_t<E, bool>
   {
     using D = std::decay_t<E>;
 
@@ -4729,14 +4349,13 @@ namespace magic_enum
 
   // Checks whether enum contains enumerator with such name.
   template <typename E, typename BinaryPredicate = std::equal_to<>>
-  [[nodiscard]] constexpr auto enum_contains(
-    string_view       value,
-    BinaryPredicate &&p = {}) noexcept(detail::is_nothrow_invocable<BinaryPredicate>())
-    -> detail::enable_if_t<E, bool, BinaryPredicate>
+  [[nodiscard]] constexpr auto enum_contains(string_view value, BinaryPredicate &&p = {}) noexcept(
+    detail::is_nothrow_invocable<BinaryPredicate>()) -> detail::enable_if_t<E, bool, BinaryPredicate>
   {
     static_assert(
       std::is_invocable_r_v<bool, BinaryPredicate, char, char>,
-      "magic_enum::enum_contains requires bool(char, char) invocable predicate.");
+      "magic_enum::enum_contains requires bool(char, char) invocable "
+      "predicate.");
     using D = std::decay_t<E>;
 
     return static_cast<bool>(enum_cast<D>(value, std::forward<BinaryPredicate>(p)));
@@ -4752,22 +4371,15 @@ namespace magic_enum
   }
 
   template <typename Result, typename E, typename Lambda>
-  constexpr auto enum_switch(Lambda &&lambda, E value, Result &&result)
-    -> detail::enable_if_t<E, Result>
+  constexpr auto enum_switch(Lambda &&lambda, E value, Result &&result) -> detail::enable_if_t<E, Result>
   {
     using D = std::decay_t<E>;
 
     return detail::constexpr_switch<&detail::values_v<D>, detail::case_call_t::value>(
-      std::forward<Lambda>(lambda), value, [&result] {
-      return std::forward<Result>(result);
-    });
+      std::forward<Lambda>(lambda), value, [&result] { return std::forward<Result>(result); });
   }
 
-  template <
-    typename E,
-    typename Result = void,
-    typename BinaryPredicate = std::equal_to<>,
-    typename Lambda>
+  template <typename E, typename Result = void, typename BinaryPredicate = std::equal_to<>, typename Lambda>
   constexpr auto enum_switch(Lambda &&lambda, string_view name, BinaryPredicate &&p = {})
     -> detail::enable_if_t<E, Result, BinaryPredicate>
   {
@@ -4781,13 +4393,8 @@ namespace magic_enum
     return detail::default_result_type_lambda<Result>();
   }
 
-  template <
-    typename E,
-    typename Result,
-    typename BinaryPredicate = std::equal_to<>,
-    typename Lambda>
-  constexpr auto enum_switch(
-    Lambda &&lambda, string_view name, Result &&result, BinaryPredicate &&p = {})
+  template <typename E, typename Result, typename BinaryPredicate = std::equal_to<>, typename Lambda>
+  constexpr auto enum_switch(Lambda &&lambda, string_view name, Result &&result, BinaryPredicate &&p = {})
     -> detail::enable_if_t<E, Result, BinaryPredicate>
   {
     static_assert(
@@ -4796,16 +4403,12 @@ namespace magic_enum
     using D = std::decay_t<E>;
 
     if (const auto v = enum_cast<D>(name, std::forward<BinaryPredicate>(p)))
-      {
-        return enum_switch<Result, D>(
-          std::forward<Lambda>(lambda), *v, std::forward<Result>(result));
-      }
+      return enum_switch<Result, D>(std::forward<Lambda>(lambda), *v, std::forward<Result>(result));
     return std::forward<Result>(result);
   }
 
   template <typename E, typename Result = void, typename Lambda>
-  constexpr auto enum_switch(Lambda &&lambda, underlying_type_t<E> value)
-    -> detail::enable_if_t<E, Result>
+  constexpr auto enum_switch(Lambda &&lambda, underlying_type_t<E> value) -> detail::enable_if_t<E, Result>
   {
     using D = std::decay_t<E>;
 
@@ -4821,29 +4424,23 @@ namespace magic_enum
     using D = std::decay_t<E>;
 
     if (const auto v = enum_cast<D>(value))
-      {
-        return enum_switch<Result, D>(
-          std::forward<Lambda>(lambda), *v, std::forward<Result>(result));
-      }
+      return enum_switch<Result, D>(std::forward<Lambda>(lambda), *v, std::forward<Result>(result));
     return std::forward<Result>(result);
   }
 
   template <typename E, typename Lambda>
-  constexpr auto enum_for_each(Lambda &&lambda)
-    -> detail::enable_if_t<E, detail::for_each_t<E, Lambda>>
+  constexpr auto enum_for_each(Lambda &&lambda) -> detail::enable_if_t<E, detail::for_each_t<E, Lambda>>
   {
     using D = std::decay_t<E>;
 
-    return detail::for_each<D>(
-      std::forward<Lambda>(lambda), std::make_index_sequence<detail::count_v<D>>{});
+    return detail::for_each<D>(std::forward<Lambda>(lambda), std::make_index_sequence<detail::count_v<D>>{});
   }
 
   namespace detail
   {
 
     template <typename E>
-    constexpr optional<std::uintmax_t>
-      fuse_one_enum(optional<std::uintmax_t> hash, E value) noexcept
+    constexpr optional<std::uintmax_t> fuse_one_enum(optional<std::uintmax_t> hash, E value) noexcept
     {
       if (hash)
         {
@@ -4858,8 +4455,7 @@ namespace magic_enum
       return fuse_one_enum(0, value);
     }
 
-    template <typename E, typename... Es>
-    constexpr optional<std::uintmax_t> fuse_enum(E head, Es... tail) noexcept
+    template <typename E, typename... Es> constexpr optional<std::uintmax_t> fuse_enum(E head, Es... tail) noexcept
     {
       return fuse_one_enum(fuse_enum(tail...), head);
     }
@@ -4875,15 +4471,12 @@ namespace magic_enum
 
   } // namespace detail
 
-  // Returns a bijective mix of several enum values. This can be used to emulate 2D
-  // switch/case statements.
+  // Returns a bijective mix of several enum values. This can be used to emulate
+  // 2D switch/case statements.
   template <typename... Es> [[nodiscard]] constexpr auto enum_fuse(Es... values) noexcept
   {
-    static_assert(
-      (std::is_enum_v<std::decay_t<Es>> && ...),
-      "magic_enum::enum_fuse requires enum type.");
-    static_assert(
-      sizeof...(Es) >= 2, "magic_enum::enum_fuse requires at least 2 values.");
+    static_assert((std::is_enum_v<std::decay_t<Es>> && ...), "magic_enum::enum_fuse requires enum type.");
+    static_assert(sizeof...(Es) >= 2, "magic_enum::enum_fuse requires at least 2 values.");
     static_assert(
       (detail::log2(enum_count<Es>() + 1) + ...) <= (sizeof(std::uintmax_t) * 8),
       "magic_enum::enum_fuse does not work for large enums");
@@ -4899,8 +4492,7 @@ namespace magic_enum
   {
 
     template <typename Char, typename Traits, typename E, detail::enable_if_t<E, int> = 0>
-    std::basic_ostream<Char, Traits> &
-      operator<<(std::basic_ostream<Char, Traits> &os, E value)
+    std::basic_ostream<Char, Traits> &operator<<(std::basic_ostream<Char, Traits> &os, E value)
     {
       using D = std::decay_t<E>;
       using U = underlying_type_t<D>;
@@ -4918,8 +4510,7 @@ namespace magic_enum
     }
 
     template <typename Char, typename Traits, typename E, detail::enable_if_t<E, int> = 0>
-    std::basic_ostream<Char, Traits> &
-      operator<<(std::basic_ostream<Char, Traits> &os, optional<E> value)
+    std::basic_ostream<Char, Traits> &operator<<(std::basic_ostream<Char, Traits> &os, optional<E> value)
     {
       return value ? (os << *value) : os;
     }
@@ -4930,8 +4521,7 @@ namespace magic_enum
   {
 
     template <typename Char, typename Traits, typename E, detail::enable_if_t<E, int> = 0>
-    std::basic_istream<Char, Traits> &
-      operator>>(std::basic_istream<Char, Traits> &is, E &value)
+    std::basic_istream<Char, Traits> &operator>>(std::basic_istream<Char, Traits> &is, E &value)
     {
       using D = std::decay_t<E>;
 
@@ -4957,47 +4547,37 @@ namespace magic_enum
   namespace bitwise_operators
   {
 
-    template <typename E, detail::enable_if_t<E, int> = 0>
-    constexpr E operator~(E rhs) noexcept
+    template <typename E, detail::enable_if_t<E, int> = 0> constexpr E operator~(E rhs) noexcept
     {
       return static_cast<E>(~static_cast<underlying_type_t<E>>(rhs));
     }
 
-    template <typename E, detail::enable_if_t<E, int> = 0>
-    constexpr E operator|(E lhs, E rhs) noexcept
+    template <typename E, detail::enable_if_t<E, int> = 0> constexpr E operator|(E lhs, E rhs) noexcept
     {
-      return static_cast<E>(
-        static_cast<underlying_type_t<E>>(lhs) | static_cast<underlying_type_t<E>>(rhs));
+      return static_cast<E>(static_cast<underlying_type_t<E>>(lhs) | static_cast<underlying_type_t<E>>(rhs));
     }
 
-    template <typename E, detail::enable_if_t<E, int> = 0>
-    constexpr E operator&(E lhs, E rhs) noexcept
+    template <typename E, detail::enable_if_t<E, int> = 0> constexpr E operator&(E lhs, E rhs) noexcept
     {
-      return static_cast<E>(
-        static_cast<underlying_type_t<E>>(lhs) & static_cast<underlying_type_t<E>>(rhs));
+      return static_cast<E>(static_cast<underlying_type_t<E>>(lhs) & static_cast<underlying_type_t<E>>(rhs));
     }
 
-    template <typename E, detail::enable_if_t<E, int> = 0>
-    constexpr E operator^(E lhs, E rhs) noexcept
+    template <typename E, detail::enable_if_t<E, int> = 0> constexpr E operator^(E lhs, E rhs) noexcept
     {
-      return static_cast<E>(
-        static_cast<underlying_type_t<E>>(lhs) ^ static_cast<underlying_type_t<E>>(rhs));
+      return static_cast<E>(static_cast<underlying_type_t<E>>(lhs) ^ static_cast<underlying_type_t<E>>(rhs));
     }
 
-    template <typename E, detail::enable_if_t<E, int> = 0>
-    constexpr E &operator|=(E &lhs, E rhs) noexcept
+    template <typename E, detail::enable_if_t<E, int> = 0> constexpr E &operator|=(E &lhs, E rhs) noexcept
     {
       return lhs = (lhs | rhs);
     }
 
-    template <typename E, detail::enable_if_t<E, int> = 0>
-    constexpr E &operator&=(E &lhs, E rhs) noexcept
+    template <typename E, detail::enable_if_t<E, int> = 0> constexpr E &operator&=(E &lhs, E rhs) noexcept
     {
       return lhs = (lhs & rhs);
     }
 
-    template <typename E, detail::enable_if_t<E, int> = 0>
-    constexpr E &operator^=(E &lhs, E rhs) noexcept
+    template <typename E, detail::enable_if_t<E, int> = 0> constexpr E &operator^=(E &lhs, E rhs) noexcept
     {
       return lhs = (lhs ^ rhs);
     }
@@ -5037,8 +4617,7 @@ namespace structopt
 namespace structopt
 {
 
-  template <typename Test, template <typename...> class Ref>
-  struct is_specialization : std::false_type
+  template <typename Test, template <typename...> class Ref> struct is_specialization : std::false_type
   {};
 
   template <template <typename...> class Ref, typename... Args>
@@ -5072,68 +4651,52 @@ namespace structopt
     template <typename T> struct is_stl_container : std::false_type
     {};
 
-    template <typename T, std::size_t N>
-    struct is_stl_container<std::array<T, N>> : std::true_type
+    template <typename T, std::size_t N> struct is_stl_container<std::array<T, N>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::vector<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::vector<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::deque<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::deque<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::list<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::list<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::forward_list<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::forward_list<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::set<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::set<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::multiset<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::multiset<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::map<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::map<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::multimap<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::multimap<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::unordered_set<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::unordered_set<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::unordered_multiset<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::unordered_multiset<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::unordered_map<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::unordered_map<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::unordered_multimap<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::unordered_multimap<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::stack<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::stack<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::queue<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::queue<Args...>> : std::true_type
     {};
 
-    template <typename... Args>
-    struct is_stl_container<std::priority_queue<Args...>> : std::true_type
+    template <typename... Args> struct is_stl_container<std::priority_queue<Args...>> : std::true_type
     {};
   } // namespace is_stl_container_impl
 
@@ -5153,11 +4716,11 @@ namespace structopt
   template <class T> struct is_array<T volatile const> : is_array<T>
   {};
 
-  // type trait to utilize the implementation type traits as well as decay the type
+  // type trait to utilize the implementation type traits as well as decay the
+  // type
   template <typename T> struct is_stl_container
   {
-    static constexpr bool const value =
-      is_stl_container_impl::is_stl_container<std::decay_t<T>>::value;
+    static constexpr bool const value = is_stl_container_impl::is_stl_container<std::decay_t<T>>::value;
   };
 
 } // namespace structopt
@@ -5171,8 +4734,7 @@ namespace structopt
   namespace details
   {
 
-    static inline bool
-      string_replace(std::string &str, const std::string &from, const std::string &to)
+    static inline bool string_replace(std::string &str, const std::string &from, const std::string &to)
     {
       size_t start_pos = str.find(from);
       if (start_pos == std::string::npos)
@@ -5244,9 +4806,7 @@ namespace structopt
         return false;
 
       // If the 1st char is not '+', '-', '.' or digit
-      if (
-        input[i] != '.' && input[i] != '+' && input[i] != '-'
-        && !(input[i] >= '0' && input[i] <= '9'))
+      if (input[i] != '.' && input[i] != '+' && input[i] != '-' && !(input[i] >= '0' && input[i] <= '9'))
         return false;
 
       // To check if a '.' or 'e' is found in given
@@ -5294,9 +4854,7 @@ namespace structopt
 
               // if e is not followed either by
               // '+', '-' or a digit
-              if (
-                input[i + 1] != '+' && input[i + 1] != '-'
-                && (input[i + 1] >= '0' && input[i] <= '9'))
+              if (input[i + 1] != '+' && input[i + 1] != '-' && (input[i + 1] >= '0' && input[i] <= '9'))
                 return false;
             }
         }
@@ -5345,19 +4903,15 @@ namespace structopt
 
       visitor() = default;
 
-      explicit visitor(const std::string &name, const std::string &version)
-        : name(name), version(version)
-      {}
+      explicit visitor(const std::string &name, const std::string &version) : name(name), version(version) {}
 
-      explicit visitor(
-        const std::string &name, const std::string &version, const std::string &help)
+      explicit visitor(const std::string &name, const std::string &version, const std::string &help)
         : name(name), version(version), help(help)
       {}
 
       // Visitor function for std::optional - could be an option or a flag
       template <typename T>
-      inline typename std::
-        enable_if<structopt::is_specialization<T, std::optional>::value, void>::type
+      inline typename std::enable_if<structopt::is_specialization<T, std::optional>::value, void>::type
         operator()(const char *name, T &)
       {
         field_names.push_back(name);
@@ -5370,8 +4924,7 @@ namespace structopt
       // Visitor function for any positional field (not std::optional)
       template <typename T>
       inline typename std::enable_if<
-        !structopt::is_specialization<T, std::optional>::value
-          && !visit_struct::traits::is_visitable<T>::value,
+        !structopt::is_specialization<T, std::optional>::value && !visit_struct::traits::is_visitable<T>::value,
         void>::type
         operator()(const char *name, T &)
       {
@@ -5379,27 +4932,23 @@ namespace structopt
         positional_field_names.push_back(name);
         positional_field_names_for_help.push_back(name);
         if constexpr (
-          structopt::is_specialization<T, std::deque>::value
-          || structopt::is_specialization<T, std::list>::value
-          || structopt::is_specialization<T, std::vector>::value
-          || structopt::is_specialization<T, std::set>::value
+          structopt::is_specialization<T, std::deque>::value || structopt::is_specialization<T, std::list>::value
+          || structopt::is_specialization<T, std::vector>::value || structopt::is_specialization<T, std::set>::value
           || structopt::is_specialization<T, std::multiset>::value
           || structopt::is_specialization<T, std::unordered_set>::value
           || structopt::is_specialization<T, std::unordered_multiset>::value
-          || structopt::is_specialization<T, std::queue>::value
-          || structopt::is_specialization<T, std::stack>::value
+          || structopt::is_specialization<T, std::queue>::value || structopt::is_specialization<T, std::stack>::value
           || structopt::is_specialization<T, std::priority_queue>::value)
           {
-            // keep track of vector-like fields as these (even though positional)
-            // can be happy without any arguments
+            // keep track of vector-like fields as these (even though
+            // positional) can be happy without any arguments
             vector_like_positional_field_names.push_back(name);
           }
       }
 
       // Visitor function for nested structs
       template <typename T>
-      inline
-        typename std::enable_if<visit_struct::traits::is_visitable<T>::value, void>::type
+      inline typename std::enable_if<visit_struct::traits::is_visitable<T>::value, void>::type
         operator()(const char *name, T &)
       {
         field_names.push_back(name);
@@ -5408,8 +4957,7 @@ namespace structopt
 
       bool is_field_name(const std::string &field_name)
       {
-        return std::find(field_names.begin(), field_names.end(), field_name)
-               != field_names.end();
+        return std::find(field_names.begin(), field_names.end(), field_name) != field_names.end();
       }
 
       void print_help(std::ostream &os) const
@@ -5488,8 +5036,8 @@ namespace structopt
                       }
                     else
                       {
-                        os << "    -" << option[0] << ", --" << long_form << " <"
-                           << option << ">" << "\n";
+                        os << "    -" << option[0] << ", --" << long_form << " <" << option << ">"
+                           << "\n";
                       }
 
                     switch (option[0])
@@ -5542,8 +5090,7 @@ namespace structopt
     details::visitor visitor_;
 
   public:
-    exception(const std::string &what, const details::visitor &visitor)
-      : what_(what), help_(""), visitor_(visitor)
+    exception(const std::string &what, const details::visitor &visitor) : what_(what), help_(""), visitor_(visitor)
     {
       std::stringstream os;
       visitor_.print_help(os);
@@ -5616,9 +5163,9 @@ namespace structopt
       std::vector<std::string>    arguments;
       std::size_t                 current_index{1};
       std::size_t                 next_index{1};
-      bool        double_dash_encountered{false}; // "--" option-argument delimiter
-      bool        sub_command_invoked{false};
-      std::string already_invoked_subcommand_name{""};
+      bool                        double_dash_encountered{false}; // "--" option-argument delimiter
+      bool                        sub_command_invoked{false};
+      std::string                 already_invoked_subcommand_name{""};
 
       bool is_optional(const std::string &name)
       {
@@ -5676,8 +5223,7 @@ namespace structopt
       {
         bool result = false;
         if (
-          next == "-" + field_name || next == "--" + field_name
-          || next == "-" + std::string(1, field_name[0])
+          next == "-" + field_name || next == "--" + field_name || next == "-" + std::string(1, field_name[0])
           || is_kebab_case(next, field_name))
           {
             // okay `next` matches _a_ field name (which is an optional field)
@@ -5755,8 +5301,7 @@ namespace structopt
         return {success, delimiter};
       }
 
-      std::pair<std::string, std::string>
-        split_delimited_argument(char delimiter, const std::string &next)
+      std::pair<std::string, std::string> split_delimited_argument(char delimiter, const std::string &next)
       {
         std::string key, value;
         bool        delimiter_found = false;
@@ -5801,8 +5346,8 @@ namespace structopt
               {
                 if (oarg[0] == next[1])
                   {
-                    // second character of next matches first character of some optional
-                    // field_name
+                    // second character of next matches first character of some
+                    // optional field_name
                     result = oarg;
                     break;
                   }
@@ -5816,10 +5361,10 @@ namespace structopt
             std::string potential_field_name = lstrip_dashes(next);
 
             // replace `-` in the middle with `_`
-            std::replace(
-              potential_field_name.begin(), potential_field_name.end(), '-', '_');
+            std::replace(potential_field_name.begin(), potential_field_name.end(), '-', '_');
 
-            // check if `potential_field_name` is in the optional field names list
+            // check if `potential_field_name` is in the optional field names
+            // list
             for (auto &oarg : visitor.optional_field_names)
               {
                 if (oarg == potential_field_name)
@@ -5850,8 +5395,7 @@ namespace structopt
           }
         else if constexpr (structopt::is_specialization<T, std::pair>::value)
           {
-            result =
-              parse_pair_argument<typename T::first_type, typename T::second_type>(name);
+            result = parse_pair_argument<typename T::first_type, typename T::second_type>(name);
           }
         else if constexpr (structopt::is_specialization<T, std::tuple>::value)
           {
@@ -5868,23 +5412,20 @@ namespace structopt
             result = parse_array_argument<typename T::value_type, N>(name);
           }
         else if constexpr (
-          structopt::is_specialization<T, std::deque>::value
-          || structopt::is_specialization<T, std::list>::value
+          structopt::is_specialization<T, std::deque>::value || structopt::is_specialization<T, std::list>::value
           || structopt::is_specialization<T, std::vector>::value)
           {
             result = parse_vector_like_argument<T>(name);
           }
         else if constexpr (
-          structopt::is_specialization<T, std::set>::value
-          || structopt::is_specialization<T, std::multiset>::value
+          structopt::is_specialization<T, std::set>::value || structopt::is_specialization<T, std::multiset>::value
           || structopt::is_specialization<T, std::unordered_set>::value
           || structopt::is_specialization<T, std::unordered_multiset>::value)
           {
             result = parse_set_argument<T>(name);
           }
         else if constexpr (
-          structopt::is_specialization<T, std::queue>::value
-          || structopt::is_specialization<T, std::stack>::value
+          structopt::is_specialization<T, std::queue>::value || structopt::is_specialization<T, std::stack>::value
           || structopt::is_specialization<T, std::priority_queue>::value)
           {
             result = parse_container_adapter_argument<T>(name);
@@ -5910,16 +5451,13 @@ namespace structopt
             else
               {
                 throw structopt::exception(
-                  "Error: failed to correctly parse optional argument `"
-                    + std::string{name} + "`.",
-                  visitor);
+                  "Error: failed to correctly parse optional argument `" + std::string{name} + "`.", visitor);
               }
           }
         else
           {
             throw structopt::exception(
-              "Error: expected value for optional argument `" + std::string{name} + "`.",
-              visitor);
+              "Error: expected value for optional argument `" + std::string{name} + "`.", visitor);
           }
         return result;
       }
@@ -5928,8 +5466,7 @@ namespace structopt
       // Not container type
       // Not a visitable type, i.e., a nested struct
       template <typename T>
-      inline
-        typename std::enable_if<!visit_struct::traits::is_visitable<T>::value, T>::type
+      inline typename std::enable_if<!visit_struct::traits::is_visitable<T>::value, T>::type
         parse_single_argument(const char *)
       {
         std::string        argument = arguments[next_index];
@@ -5966,8 +5503,7 @@ namespace structopt
 
       // Nested visitable struct
       template <typename T>
-      inline
-        typename std::enable_if<visit_struct::traits::is_visitable<T>::value, T>::type
+      inline typename std::enable_if<visit_struct::traits::is_visitable<T>::value, T>::type
         parse_nested_struct(const char *name)
       {
 
@@ -5994,9 +5530,8 @@ namespace structopt
           {
             // a sub-command has already been invoked
             throw structopt::exception(
-              "Error: failed to invoke sub-command `" + std::string{name}
-                + "` because a different sub-command, `" + already_invoked_subcommand_name
-                + "`, has already been invoked.",
+              "Error: failed to invoke sub-command `" + std::string{name} + "` because a different sub-command, `"
+                + already_invoked_subcommand_name + "`, has already been invoked.",
               argument_struct.visitor_);
           }
 
@@ -6006,10 +5541,7 @@ namespace structopt
         parser.double_dash_encountered = double_dash_encountered;
         parser.visitor = argument_struct.visitor_;
 
-        std::copy(
-          arguments.begin() + next_index,
-          arguments.end(),
-          std::back_inserter(parser.arguments));
+        std::copy(arguments.begin() + next_index, arguments.end(), std::back_inserter(parser.arguments));
 
         for (std::size_t i = 0; i < parser.arguments.size(); i++)
           {
@@ -6054,9 +5586,7 @@ namespace structopt
                     // this positional argument is not a vector-like argument
                     // it expects value(s)
                     throw structopt::exception(
-                      "Error: expected value for positional argument `" + field_name
-                        + "`.",
-                      argument_struct.visitor_);
+                      "Error: expected value for positional argument `" + field_name + "`.", argument_struct.visitor_);
                   }
               }
           }
@@ -6069,8 +5599,7 @@ namespace structopt
       }
 
       // Pair argument
-      template <typename T1, typename T2>
-      std::pair<T1, T2> parse_pair_argument(const char *name)
+      template <typename T1, typename T2> std::pair<T1, T2> parse_pair_argument(const char *name)
       {
         std::pair<T1, T2> result;
         {
@@ -6092,9 +5621,7 @@ namespace structopt
           else
             {
               throw structopt::exception(
-                "Error: failed to correctly parse first element of pair `"
-                  + std::string{name} + "`",
-                visitor);
+                "Error: failed to correctly parse first element of pair `" + std::string{name} + "`", visitor);
             }
         }
         {
@@ -6116,17 +5643,14 @@ namespace structopt
           else
             {
               throw structopt::exception(
-                "Error: failed to correctly parse second element of pair `"
-                  + std::string{name} + "`",
-                visitor);
+                "Error: failed to correctly parse second element of pair `" + std::string{name} + "`", visitor);
             }
         }
         return result;
       }
 
       // Array argument
-      template <typename T, std::size_t N>
-      std::array<T, N> parse_array_argument(const char *name)
+      template <typename T, std::size_t N> std::array<T, N> parse_array_argument(const char *name)
       {
         std::array<T, N> result{};
 
@@ -6134,9 +5658,8 @@ namespace structopt
         if (arguments_left == 0 || arguments_left < N)
           {
             throw structopt::exception(
-              "Error: expected " + std::to_string(N) + " values for std::array argument `"
-                + name + "` - instead got only " + std::to_string(arguments_left)
-                + " arguments.",
+              "Error: expected " + std::to_string(N) + " values for std::array argument `" + name
+                + "` - instead got only " + std::to_string(arguments_left) + " arguments.",
               visitor);
           }
 
@@ -6152,9 +5675,7 @@ namespace structopt
       template <class Tuple, class F, std::size_t... I>
       constexpr F for_each_impl(Tuple &&t, F &&f, std::index_sequence<I...>)
       {
-        return (void) std::initializer_list<int>{
-                 (std::forward<F>(f)(std::get<I>(std::forward<Tuple>(t))), 0)...},
-               f;
+        return (void) std::initializer_list<int>{(std::forward<F>(f)(std::get<I>(std::forward<Tuple>(t))), 0)...}, f;
       }
 
       template <class Tuple, class F> constexpr F for_each(Tuple &&t, F &&f)
@@ -6162,17 +5683,13 @@ namespace structopt
         return for_each_impl(
           std::forward<Tuple>(t),
           std::forward<F>(f),
-          std::make_index_sequence<
-            std::tuple_size<std::remove_reference_t<Tuple>>::value>{});
+          std::make_index_sequence<std::tuple_size<std::remove_reference_t<Tuple>>::value>{});
       }
 
       // Parse single tuple element
-      template <typename T>
-      void parse_tuple_element(
-        const char *name, std::size_t index, std::size_t size, T &&result)
+      template <typename T> void parse_tuple_element(const char *name, std::size_t index, std::size_t size, T &&result)
       {
-        auto [value, success] =
-          parse_argument<typename std::remove_reference<T>::type>(name);
+        auto [value, success] = parse_argument<typename std::remove_reference<T>::type>(name);
         if (success)
           {
             result = value;
@@ -6180,19 +5697,18 @@ namespace structopt
         else if (next_index == arguments.size())
           {
             // end of arguments list
-            // failed to parse tuple <>. expected `size` arguments, `index` provided
+            // failed to parse tuple <>. expected `size` arguments, `index`
+            // provided
             throw structopt::exception(
-              "Error: failed to correctly parse tuple `" + std::string{name}
-                + "`. Expected " + std::to_string(size) + " arguments, "
-                + std::to_string(index) + " provided.",
+              "Error: failed to correctly parse tuple `" + std::string{name} + "`. Expected " + std::to_string(size)
+                + " arguments, " + std::to_string(index) + " provided.",
               visitor);
           }
         else
           {
             throw structopt::exception(
-              "Error: failed to correctly parse tuple `" + std::string{name}
-                + "` {size = " + std::to_string(size) + "} at index "
-                + std::to_string(index) + ".",
+              "Error: failed to correctly parse tuple `" + std::string{name} + "` {size = " + std::to_string(size)
+                + "} at index " + std::to_string(index) + ".",
               visitor);
           }
       }
@@ -6219,9 +5735,7 @@ namespace structopt
         while (next_index < arguments.size())
           {
             const auto next = arguments[next_index];
-            if (
-              is_optional_field(next) || std::string{next} == "--"
-              || is_delimited_optional_argument(next).first)
+            if (is_optional_field(next) || std::string{next} == "--" || is_delimited_optional_argument(next).first)
               {
                 if (std::string{next} == "--")
                   {
@@ -6246,9 +5760,7 @@ namespace structopt
         while (next_index < arguments.size())
           {
             const auto next = arguments[next_index];
-            if (
-              is_optional_field(next) || std::string{next} == "--"
-              || is_delimited_optional_argument(next).first)
+            if (is_optional_field(next) || std::string{next} == "--" || is_delimited_optional_argument(next).first)
               {
                 if (std::string{next} == "--")
                   {
@@ -6273,9 +5785,7 @@ namespace structopt
         while (next_index < arguments.size())
           {
             const auto next = arguments[next_index];
-            if (
-              is_optional_field(next) || std::string{next} == "--"
-              || is_delimited_optional_argument(next).first)
+            if (is_optional_field(next) || std::string{next} == "--" || is_delimited_optional_argument(next).first)
               {
                 if (std::string{next} == "--")
                   {
@@ -6314,9 +5824,8 @@ namespace structopt
               }
 
             throw structopt::exception(
-              "Error: unexpected input `" + std::string{arguments[next_index]}
-                + "` provided for enum argument `" + std::string{name}
-                + "`. Allowed values are {" + allowed_names_string + "}",
+              "Error: unexpected input `" + std::string{arguments[next_index]} + "` provided for enum argument `"
+                + std::string{name} + "`. Allowed values are {" + allowed_names_string + "}",
               visitor);
             // TODO: Throw error invalid enum option
           }
@@ -6325,8 +5834,7 @@ namespace structopt
 
       // Visitor function for nested struct
       template <typename T>
-      inline
-        typename std::enable_if<visit_struct::traits::is_visitable<T>::value, void>::type
+      inline typename std::enable_if<visit_struct::traits::is_visitable<T>::value, void>::type
         operator()(const char *name, T &value)
       {
         if (next_index > current_index)
@@ -6349,8 +5857,7 @@ namespace structopt
       // Visitor function for any positional field (not std::optional)
       template <typename T>
       inline typename std::enable_if<
-        !structopt::is_specialization<T, std::optional>::value
-          && !visit_struct::traits::is_visitable<T>::value,
+        !structopt::is_specialization<T, std::optional>::value && !visit_struct::traits::is_visitable<T>::value,
         void>::type
         operator()(const char *name, T &result)
       {
@@ -6368,8 +5875,7 @@ namespace structopt
               {
                 // We're not looking to save any more positional fields
                 // all of them already have a value
-                throw structopt::exception(
-                  "Error: unexpected argument '" + next + "'", visitor);
+                throw structopt::exception("Error: unexpected argument '" + next + "'", visitor);
                 return;
               }
 
@@ -6404,8 +5910,7 @@ namespace structopt
 
       // Visitor function for std::optional field
       template <typename T>
-      inline typename std::
-        enable_if<structopt::is_specialization<T, std::optional>::value, void>::type
+      inline typename std::enable_if<structopt::is_specialization<T, std::optional>::value, void>::type
         operator()(const char *name, T &value)
       {
         if (next_index > current_index)
@@ -6425,20 +5930,23 @@ namespace structopt
 
             // if `next` looks like an optional argument
             // i.e., starts with `-` or `--`
-            // see if you can find an optional field in the struct with a matching name
+            // see if you can find an optional field in the struct with a
+            // matching name
 
-            // check if the current argument looks like it could be this optional field
+            // check if the current argument looks like it could be this
+            // optional field
             if (double_dash_encountered == false && is_optional_field(next, field_name))
               {
 
-                // this is an optional argument matching the current struct field
+                // this is an optional argument matching the current struct
+                // field
                 if constexpr (std::is_same<typename T::value_type, bool>::value)
                   {
                     // It is a boolean optional argument
                     // Does it have a default value?
-                    // If yes, this is a FLAG argument, e.g,, "--verbose" will set it to
-                    // true if the default value is false No need to write "--verbose
-                    // true"
+                    // If yes, this is a FLAG argument, e.g,, "--verbose" will
+                    // set it to true if the default value is false No need to
+                    // write "--verbose true"
                     if (value.has_value())
                       {
                         // The field already has a default value!
@@ -6447,8 +5955,8 @@ namespace structopt
                       }
                     else
                       {
-                        // boolean optional argument doesn't have a default value
-                        // expect one
+                        // boolean optional argument doesn't have a default
+                        // value expect one
                         value = parse_optional_argument<typename T::value_type>(name);
                       }
                   }
@@ -6462,20 +5970,20 @@ namespace structopt
             else if (double_dash_encountered == false)
               {
 
-                // maybe this is an optional argument that is delimited with '=' or ':'
-                // e.g., --foo=bar or --foo:BAR
+                // maybe this is an optional argument that is delimited with '='
+                // or ':' e.g., --foo=bar or --foo:BAR
                 if (next.size() > 1 && next[0] == '-')
                   {
-                    const auto [success, delimiter] =
-                      is_delimited_optional_argument(next);
+                    const auto [success, delimiter] = is_delimited_optional_argument(next);
                     if (success)
                       {
                         const auto [lhs, rhs] = split_delimited_argument(delimiter, next);
                         // update next_index and return
                         // the parser will take care of the rest
 
-                        // if `lhs` is an optional argument (i.e., maps to an optional
-                        // field in the original struct), then insert into arguments list
+                        // if `lhs` is an optional argument (i.e., maps to an
+                        // optional field in the original struct), then insert
+                        // into arguments list
                         auto potential_field_name = get_full_optional_field_name(lhs);
                         if (potential_field_name.has_value())
                           {
@@ -6491,22 +5999,15 @@ namespace structopt
                       }
                   }
 
-                // A direct match of optional argument with field_name has not happened
-                // This _could_ be a combined argument
-                // e.g., -abc => -a, -b, and -c where each of these is a flag argument
+                // A direct match of optional argument with field_name has not
+                // happened This _could_ be a combined argument e.g., -abc =>
+                // -a, -b, and -c where each of these is a flag argument
 
                 std::vector<std::string> potential_combined_argument;
 
-                if (
-                  is_optional_field(next) == false && next[0] == '-'
-                  && (next.size() > 1 && next[1] != '-'))
-                  {
-                    for (std::size_t i = 1; i < next.size(); i++)
-                      {
-                        potential_combined_argument.push_back(
-                          "-" + std::string(1, next[i]));
-                      }
-                  }
+                if (is_optional_field(next) == false && next[0] == '-' && (next.size() > 1 && next[1] != '-'))
+                  for (std::size_t i = 1; i < next.size(); i++)
+                    potential_combined_argument.push_back("-" + std::string(1, next[i]));
 
                 if (!potential_combined_argument.empty())
                   {
@@ -6516,7 +6017,8 @@ namespace structopt
                         if (!is_optional_field(arg))
                           {
                             is_combined_argument = false;
-                            // TODO: report error unrecognized option in combined argument
+                            // TODO: report error unrecognized option in
+                            // combined argument
                           }
                       }
 
@@ -6531,7 +6033,8 @@ namespace structopt
                         // 1. Split `-abc` into `-a`, `-b`, and `-c`
                         // 2. Check if `-b` is in the above list
                         //    1. If yes, consider this as a combined argument
-                        //       push the list of arguments (split up) into `arguments`
+                        //       push the list of arguments (split up) into
+                        //       `arguments`
                         //    2. If no, nothing to do here
                         bool field_name_matched = false;
                         for (auto &arg : potential_combined_argument)
@@ -6542,14 +6045,14 @@ namespace structopt
                           {
                             // confirmed: this is a combined argument
 
-                            // insert the individual options that make up the combined
-                            // argument right after the combined argument e.g., ""./main
-                            // -abc" becomes "./main -abc -a -b -c" Once this is done,
-                            // increment `next_index` so that the parser loop will service
-                            // `-a`, `-b` and `-c` like any other optional arguments
-                            // (flags and otherwise)
-                            for (std::vector<std::string>::reverse_iterator it =
-                                   potential_combined_argument.rbegin();
+                            // insert the individual options that make up the
+                            // combined argument right after the combined
+                            // argument e.g., ""./main -abc" becomes "./main
+                            // -abc -a -b -c" Once this is done, increment
+                            // `next_index` so that the parser loop will service
+                            // `-a`, `-b` and `-c` like any other optional
+                            // arguments (flags and otherwise)
+                            for (std::vector<std::string>::reverse_iterator it = potential_combined_argument.rbegin();
                                  it != potential_combined_argument.rend();
                                  ++it)
                               {
@@ -6576,8 +6079,7 @@ namespace structopt
     };
 
     // Specialization for std::string
-    template <>
-    inline std::string parser::parse_single_argument<std::string>(const char *)
+    template <> inline std::string parser::parse_single_argument<std::string>(const char *)
     {
       return arguments[next_index];
     }
@@ -6599,29 +6101,24 @@ namespace structopt
 
           // Convert argument to lower case
           std::transform(
-            current_argument.begin(),
-            current_argument.end(),
-            current_argument.begin(),
-            [](unsigned char c) { return static_cast<char>(std::tolower(c)); });
+            current_argument.begin(), current_argument.end(), current_argument.begin(), [](unsigned char c) {
+              return static_cast<char>(std::tolower(c));
+            });
 
           // Detect if argument is true or false
-          if (
-            std::find(true_strings.begin(), true_strings.end(), current_argument)
-            != true_strings.end())
+          if (std::find(true_strings.begin(), true_strings.end(), current_argument) != true_strings.end())
             {
               return true;
             }
-          else if (
-            std::find(false_strings.begin(), false_strings.end(), current_argument)
-            != false_strings.end())
+          else if (std::find(false_strings.begin(), false_strings.end(), current_argument) != false_strings.end())
             {
               return false;
             }
           else
             {
               throw structopt::exception(
-                "Error: failed to parse boolean argument `" + std::string{name} + "`."
-                  + " `" + current_argument + "`" + " is invalid.",
+                "Error: failed to parse boolean argument `" + std::string{name} + "`." + " `" + current_argument + "`"
+                  + " is invalid.",
                 visitor);
               return false;
             }
@@ -6657,10 +6154,7 @@ namespace structopt
     details::visitor visitor;
 
   public:
-    explicit app(
-      const std::string &name,
-      const std::string &version = "",
-      const std::string &help = "")
+    explicit app(const std::string &name, const std::string &version = "", const std::string &help = "")
       : visitor(name, version, help)
     {}
 
@@ -6723,8 +6217,7 @@ namespace structopt
                   // this positional argument is not a vector-like argument
                   // it expects value(s)
                   throw structopt::exception(
-                    "Error: expected value for positional argument `" + field_name + "`.",
-                    parser.visitor);
+                    "Error: expected value for positional argument `" + field_name + "`.", parser.visitor);
                 }
             }
         }
@@ -6732,9 +6225,7 @@ namespace structopt
       if (parser.current_index < parser.arguments.size())
         {
           throw structopt::exception(
-            "Error: unrecognized argument '" + parser.arguments[parser.current_index]
-              + "'",
-            parser.visitor);
+            "Error: unrecognized argument '" + parser.arguments[parser.current_index] + "'", parser.visitor);
         }
 
       return argument_struct;
diff --git a/compiler/ast/ast.cpp b/compiler/ast/ast.cpp
index f1251e3..b828bec 100644
--- a/compiler/ast/ast.cpp
+++ b/compiler/ast/ast.cpp
@@ -29,7 +29,6 @@
 
 #include "ast.hpp"
 #include "diagnostics/reporter.hpp"
-#include "panic/panic.hpp"
 #include "type/environment.hpp"
 #include "type/type.hpp"
 #include <vector>
@@ -52,7 +51,7 @@ namespace swallow::compiler::ast
         return {"/"};
       }
 
-    utils::Panic("OperatorToString failed!!!");
+    Panic("OperatorToString failed!!!");
   }
 
   void Dump(const std::vector<Definition::Ptr> &Program) noexcept
@@ -75,16 +74,13 @@ namespace swallow::compiler::ast
 
 namespace swallow::compiler::type
 {
-  void TypeCheck(
-    const std::vector<ast::Definition::Ptr> &program,
-    const CompilerOptions                   &options) noexcept
+  void TypeCheck(const std::vector<ast::Definition::Ptr> &program, const CompilerOptions &options) noexcept
   {
     Manager     typeManager;
     Environment typeEnvironment;
 
     auto intType = Type::Ptr(new Base("Int"));
-    auto binopType =
-      Type::Ptr(new Arrow(intType, Type::Ptr(new type::Arrow(intType, intType))));
+    auto binopType = Type::Ptr(new Arrow(intType, Type::Ptr(new type::Arrow(intType, intType))));
 
     typeEnvironment.Bind("+", binopType);
     typeEnvironment.Bind("-", binopType);
@@ -107,9 +103,7 @@ namespace swallow::compiler::type
 
 namespace swallow::compiler::gmachine
 {
-  void Compile(
-    const std::vector<ast::Definition::Ptr> &program,
-    const CompilerOptions                   &options) noexcept
+  void Compile(const std::vector<ast::Definition::Ptr> &program, const CompilerOptions &options) noexcept
   {
     for (const auto &definition : program)
       {
diff --git a/compiler/ast/ast.hpp b/compiler/ast/ast.hpp
index 90c3f6c..60cfbdf 100644
--- a/compiler/ast/ast.hpp
+++ b/compiler/ast/ast.hpp
@@ -30,18 +30,19 @@
 #ifndef SWALLOW_COMPILER_AST_HPP
 #define SWALLOW_COMPILER_AST_HPP
 
-#include "binop/binop.hpp"
-#include "g-machine/environment.hpp"
-#include "g-machine/instruction.hpp"
+#include "compiler.h"
+#include "gmachine/environment.hpp"
+#include "gmachine/instruction.hpp"
 #include "parser/location.hh"
-#include "result/result.hpp"
 #include "type/environment.hpp"
 #include "type/type.hpp"
-#include "compiler.h"
+#include "utils/binop.hpp"
 #include <cstdint>
 #include <memory>
 #include <string>
 #include <vector>
+#include <tl/expected.hpp>
+#include "error/errors.hpp"
 
 namespace swallow::compiler::ast
 {
@@ -54,7 +55,7 @@ namespace swallow::compiler::ast
     using Ptr = std::unique_ptr<AST>;
 
     /** The location of the current expression in the source file.
-     * (generated by Bison, passed in parser.y) */
+     ** (generated by Bison, passed in parser.y) */
     const yy::location Location;
 
     type::Type::Ptr NodeType;
@@ -64,18 +65,16 @@ namespace swallow::compiler::ast
     virtual ~AST() = default;
 
     /** This function calls TypeCheck,
-     * stores the result in NodeType and returns NodeType */
-    auto CommonTypeCheck(
-      type::Manager           &typeManager,
-      const type::Environment &typeEnvironment) noexcept -> type::Type::Ptr;
+     ** stores the result in NodeType and returns NodeType */
+    auto CommonTypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) noexcept
+      -> type::Type::Ptr;
 
     void CommonResolve(const type::Manager &typeManager) noexcept;
 
     virtual void Resolve(const type::Manager &typeManager) noexcept = 0;
 
-    virtual auto
-      TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-        const noexcept -> utils::Result<type::Type::Ptr, utils::Void> = 0;
+    virtual auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+      -> tl::expected<type::Type::Ptr, std::nullptr_t> = 0;
 
     virtual void Dump(uint8_t indent, std::ostream &to) const noexcept = 0;
 
@@ -95,14 +94,11 @@ namespace swallow::compiler::ast
 
     virtual ~Definition() = default;
 
-    virtual void PreScanTypes(
-      type::Manager &typeManager, type::Environment &typeEnvironment) noexcept = 0;
+    virtual void PreScanTypes(type::Manager &typeManager, type::Environment &typeEnvironment) noexcept = 0;
 
     virtual void Resolve(const type::Manager &typeManager) noexcept = 0;
 
-    virtual void TypeCheck(
-      type::Manager           &typeManager,
-      const type::Environment &typeEnvironment) const noexcept = 0;
+    virtual void TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept = 0;
 
     virtual void Compile() noexcept = 0;
   };
@@ -114,14 +110,12 @@ namespace swallow::compiler::ast
 
     const yy::location Location;
 
-    explicit Pattern(const yy::location Location) : Location(Location) {}
+    explicit Pattern(const yy::location &Location) : Location(Location) {}
 
     virtual ~Pattern() = default;
 
     virtual void Match(
-      type::Type::Ptr    type,
-      type::Manager     &typeManager,
-      type::Environment &typeEnvironment) const noexcept = 0;
+      type::Type::Ptr type, type::Manager &typeManager, type::Environment &typeEnvironment) const noexcept = 0;
 
     virtual void Dump(std::ostream &to) const noexcept = 0;
   };
@@ -135,7 +129,7 @@ namespace swallow::compiler::ast
     const Pattern::Ptr Patt;
     const AST::Ptr     Expr;
 
-    Branch(const yy::location Location, Pattern::Ptr Patt, AST::Ptr Expr)
+    Branch(const yy::location &Location, Pattern::Ptr Patt, AST::Ptr Expr)
       : Patt(std::move(Patt)), Expr(std::move(Expr)), Location(Location)
     {}
   };
@@ -150,8 +144,7 @@ namespace swallow::compiler::ast
     const yy::location             Location;
     uint8_t                        Tag{};
 
-    Constructor(
-      const yy::location Location, std::string Name, std::vector<std::string> Types)
+    Constructor(const yy::location Location, std::string Name, std::vector<std::string> Types)
       : Name(std::move(Name)), Types(std::move(Types)), Location(Location)
     {}
   };
@@ -161,10 +154,10 @@ namespace swallow::compiler::ast
     const int Value;
 
   public:
-    explicit Int(const yy::location Location, const int V) : Value(V), AST(Location) {}
+    explicit Int(const yy::location &Location, const int V) : Value(V), AST(Location) {}
 
-    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> utils::Result<type::Type::Ptr, utils::Void> override;
+    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+      -> tl::expected<type::Type::Ptr, std::nullptr_t> override;
 
     void Dump(uint8_t indent, std::ostream &to) const noexcept override;
 
@@ -180,12 +173,10 @@ namespace swallow::compiler::ast
     const std::string ID;
 
   public:
-    explicit LID(const yy::location Location, std::string ID)
-      : ID(std::move(ID)), AST(Location)
-    {}
+    explicit LID(const yy::location &Location, std::string ID) : ID(std::move(ID)), AST(Location) {}
 
-    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> utils::Result<type::Type::Ptr, utils::Void> override;
+    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+      -> tl::expected<type::Type::Ptr, std::nullptr_t> override;
 
     void Dump(uint8_t indent, std::ostream &to) const noexcept override;
 
@@ -200,12 +191,10 @@ namespace swallow::compiler::ast
     const std::string ID;
 
   public:
-    explicit UID(const yy::location Location, std::string ID)
-      : ID(std::move(ID)), AST(Location)
-    {}
+    explicit UID(const yy::location Location, std::string ID) : ID(std::move(ID)), AST(Location) {}
 
-    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> utils::Result<type::Type::Ptr, utils::Void> override;
+    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+      -> tl::expected<type::Type::Ptr, std::nullptr_t> override;
 
     void Dump(uint8_t indent, std::ostream &to) const noexcept override;
 
@@ -228,8 +217,8 @@ namespace swallow::compiler::ast
 
     static auto OperatorToString(utils::Binop op) noexcept -> std::string;
 
-    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> utils::Result<type::Type::Ptr, utils::Void> override;
+    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+      -> tl::expected<type::Type::Ptr, std::nullptr_t> override;
 
     void Dump(uint8_t indent, std::ostream &to) const noexcept override;
 
@@ -250,8 +239,8 @@ namespace swallow::compiler::ast
       : Left(std::move(Left)), Right(std::move(Right)), AST(Location)
     {}
 
-    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> utils::Result<type::Type::Ptr, utils::Void> override;
+    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+      -> tl::expected<type::Type::Ptr, std::nullptr_t> override;
 
     void Dump(uint8_t indent, std::ostream &to) const noexcept override;
 
@@ -271,8 +260,8 @@ namespace swallow::compiler::ast
       : With(std::move(o)), Branches(std::move(b)), AST(Location)
     {}
 
-    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> utils::Result<type::Type::Ptr, utils::Void> override;
+    auto TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+      -> tl::expected<type::Type::Ptr, std::nullptr_t> override;
 
     void Dump(uint8_t indent, std::ostream &to) const noexcept override;
 
@@ -293,9 +282,7 @@ namespace swallow::compiler::ast
     {}
 
     void Match(
-      type::Type::Ptr    type,
-      type::Manager     &typeManager,
-      type::Environment &typeEnvironment) const noexcept override;
+      type::Type::Ptr type, type::Manager &typeManager, type::Environment &typeEnvironment) const noexcept override;
 
     void Dump(std::ostream &to) const noexcept override;
   };
@@ -306,19 +293,12 @@ namespace swallow::compiler::ast
     const std::string              ConstructorName;
     const std::vector<std::string> Params;
 
-    ConstructorPattern(
-      const yy::location       Location,
-      std::string              Constructor,
-      std::vector<std::string> Params)
-      : ConstructorName(std::move(Constructor))
-      , Params(std::move(Params))
-      , Pattern(Location)
+    ConstructorPattern(const yy::location Location, std::string Constructor, std::vector<std::string> Params)
+      : ConstructorName(std::move(Constructor)), Params(std::move(Params)), Pattern(Location)
     {}
 
     void Match(
-      type::Type::Ptr    type,
-      type::Manager     &typeManager,
-      type::Environment &typeEnvironment) const noexcept override;
+      type::Type::Ptr type, type::Manager &typeManager, type::Environment &typeEnvironment) const noexcept override;
 
     void Dump(std::ostream &to) const noexcept override;
   };
@@ -334,22 +314,13 @@ namespace swallow::compiler::ast
     std::vector<type::Type::Ptr> ParamTypes;
     type::Type::Ptr              ReturnType;
 
-    Fn(
-      const yy::location       Location,
-      std::string              Name,
-      std::vector<std::string> Params,
-      AST::Ptr                 Body)
-      : Name(std::move(Name))
-      , Params(std::move(Params))
-      , Body(std::move(Body))
-      , Definition(Location)
+    Fn(const yy::location Location, std::string Name, std::vector<std::string> Params, AST::Ptr Body)
+      : Name(std::move(Name)), Params(std::move(Params)), Body(std::move(Body)), Definition(Location)
     {}
 
-    void PreScanTypes(
-      type::Manager &typeManager, type::Environment &typeEnvironment) noexcept override;
+    void PreScanTypes(type::Manager &typeManager, type::Environment &typeEnvironment) noexcept override;
 
-    void TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept override;
+    void TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept override;
     void Resolve(const type::Manager &typeManager) noexcept override;
     void Compile() noexcept override;
   };
@@ -360,17 +331,12 @@ namespace swallow::compiler::ast
     const std::string                   Name;
     const std::vector<Constructor::Ptr> Constructors;
 
-    Data(
-      const yy::location            Location,
-      std::string                   Name,
-      std::vector<Constructor::Ptr> Constructors)
+    Data(const yy::location Location, std::string Name, std::vector<Constructor::Ptr> Constructors)
       : Name(std::move(Name)), Constructors(std::move(Constructors)), Definition(Location)
     {}
 
-    void PreScanTypes(
-      type::Manager &typeManager, type::Environment &typeEnvironment) noexcept override;
-    void TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept override;
+    void PreScanTypes(type::Manager &typeManager, type::Environment &typeEnvironment) noexcept override;
+    void TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept override;
     void Resolve(const type::Manager &typeManager) noexcept override;
     void Compile() noexcept override;
   };
@@ -380,16 +346,12 @@ namespace swallow::compiler::ast
 
 namespace swallow::compiler::type
 {
-  void TypeCheck(
-    const std::vector<ast::Definition::Ptr> &program,
-    const CompilerOptions                   &options) noexcept;
+  void TypeCheck(const std::vector<ast::Definition::Ptr> &program, const CompilerOptions &options) noexcept;
 } // namespace swallow::compiler::type
 
 namespace swallow::compiler::gmachine
 {
-  void Compile(
-    const std::vector<ast::Definition::Ptr> &program,
-    const CompilerOptions                   &options) noexcept;
+  void Compile(const std::vector<ast::Definition::Ptr> &program, const CompilerOptions &options) noexcept;
 }
 
 #endif
\ No newline at end of file
diff --git a/compiler/ast/dump.cpp b/compiler/ast/dump.cpp
index ac670dc..066a0e9 100644
--- a/compiler/ast/dump.cpp
+++ b/compiler/ast/dump.cpp
@@ -27,35 +27,35 @@
 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#include "utils/dump.hpp"
 #include "ast.hpp"
 #include <cstdint>
 #include <format>
-#include "utils/dump.h"
 using namespace swallow::compiler::utils;
 
 namespace swallow::compiler::ast
 {
   void Int::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("<Int: {}>", Value) << '\n';
   }
 
   void LID::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("<LID: {}>", ID) << '\n';
   }
 
   void UID::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("<UID: {}>", ID) << '\n';
   }
 
   void Binop::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
 
     to << std::format("<Binop: {}", OperatorToString(Operator)) << '\n';
 
@@ -67,7 +67,7 @@ namespace swallow::compiler::ast
 
   void Application::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
 
     to << "<Application: " << '\n';
 
@@ -78,13 +78,13 @@ namespace swallow::compiler::ast
 
   void Match::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
 
     to << "<Match: " << '\n';
 
     for (const auto &branch : Branches)
       {
-        dump::dumpIndent(indent + 1, to);
+        dump::DumpIndent(indent + 1, to);
         branch->Patt->Dump(to);
         to << '\n';
         branch->Expr->Dump(indent + 2, to);
diff --git a/compiler/ast/g-machine.cpp b/compiler/ast/gmachine.cpp
similarity index 79%
rename from compiler/ast/g-machine.cpp
rename to compiler/ast/gmachine.cpp
index d59a901..a01e880 100644
--- a/compiler/ast/g-machine.cpp
+++ b/compiler/ast/gmachine.cpp
@@ -31,11 +31,10 @@
 #include <sstream>
 
 #include "ast.hpp"
-#include "code.hpp"
+#include "diagnostics/code.hpp"
 #include "diagnostics/reporter.hpp"
-#include "g-machine/binop.hpp"
-#include "g-machine/instruction.hpp"
-#include "panic/panic.hpp"
+#include "gmachine/binop.hpp"
+#include "gmachine/instruction.hpp"
 
 using swallow::compiler::gmachine::instruction::Instruction;
 using namespace swallow::compiler::gmachine;
@@ -44,34 +43,29 @@ using namespace swallow::compiler::utils;
 namespace swallow::compiler::ast
 {
   void Int::Compile(
-    const gmachine::Environment::Ptr &machineEnvironment,
-    std::vector<Instruction::Ptr>    &into) const noexcept
+    const gmachine::Environment::Ptr &machineEnvironment, std::vector<Instruction::Ptr> &into) const noexcept
   {
     into.push_back(Instruction::Ptr(new instruction::PushInt(Value)));
   }
 
   void LID::Compile(
-    const gmachine::Environment::Ptr &machineEnvironment,
-    std::vector<Instruction::Ptr>    &into) const noexcept
+    const gmachine::Environment::Ptr &machineEnvironment, std::vector<Instruction::Ptr> &into) const noexcept
   {
     into.push_back(Instruction::Ptr(
       machineEnvironment->HasVariable(ID)
-        ? dynamic_cast<Instruction *>(
-            new instruction::Push(machineEnvironment->GetOffset(ID).value()))
+        ? dynamic_cast<Instruction *>(new instruction::Push(machineEnvironment->GetOffset(ID).value()))
 
         : dynamic_cast<Instruction *>(new instruction::PushGlobal(ID))));
   }
 
   void UID::Compile(
-    const gmachine::Environment::Ptr &machineEnvironment,
-    std::vector<Instruction::Ptr>    &into) const noexcept
+    const gmachine::Environment::Ptr &machineEnvironment, std::vector<Instruction::Ptr> &into) const noexcept
   {
     into.push_back(Instruction::Ptr(new instruction::PushGlobal(ID)));
   }
 
   void Application::Compile(
-    const gmachine::Environment::Ptr &machineEnvironment,
-    std::vector<Instruction::Ptr>    &into) const noexcept
+    const gmachine::Environment::Ptr &machineEnvironment, std::vector<Instruction::Ptr> &into) const noexcept
   {
     Right->Compile(machineEnvironment, into);
     Left->Compile(Environment::Ptr(new Offset(1, machineEnvironment)), into);
@@ -79,14 +73,12 @@ namespace swallow::compiler::ast
   }
 
   void Binop::Compile(
-    const gmachine::Environment::Ptr &machineEnvironment,
-    std::vector<Instruction::Ptr>    &into) const noexcept
+    const gmachine::Environment::Ptr &machineEnvironment, std::vector<Instruction::Ptr> &into) const noexcept
   {
     Right->Compile(machineEnvironment, into);
     Left->Compile(machineEnvironment, into);
 
-    into.push_back(
-      Instruction::Ptr(new instruction::PushGlobal(gmachine::Binop::Action(Operator))));
+    into.push_back(Instruction::Ptr(new instruction::PushGlobal(gmachine::Binop::Action(Operator))));
     into.push_back(Instruction::Ptr(new instruction::MakeApplication()));
     into.push_back(Instruction::Ptr(new instruction::MakeApplication()));
   }
@@ -99,8 +91,7 @@ namespace swallow::compiler::ast
   {
     std::vector<Instruction::Ptr> branchInstructions;
 
-    branch->Expr->Compile(
-      Environment::Ptr(new Offset(1, machineEnvironment)), branchInstructions);
+    branch->Expr->Compile(Environment::Ptr(new Offset(1, machineEnvironment)), branchInstructions);
 
     for (const auto &constructorPair : type->Constructors)
       {
@@ -124,17 +115,13 @@ namespace swallow::compiler::ast
     auto                          newEnvironment = machineEnvironment;
     std::vector<Instruction::Ptr> branchInstructions;
 
-    std::for_each(
-      constructorPattern->Params.rbegin(),
-      constructorPattern->Params.rend(),
-      [&](const auto &param) {
+    std::for_each(constructorPattern->Params.rbegin(), constructorPattern->Params.rend(), [&](const auto &param) {
       newEnvironment = Environment::Ptr(new Variable(param, newEnvironment));
     });
 
     branchInstructions.push_back(Instruction::Ptr(new instruction::Split()));
     branch->Expr->Compile(newEnvironment, branchInstructions);
-    branchInstructions.push_back(
-      Instruction::Ptr(new instruction::Slide(constructorPattern->Params.size())));
+    branchInstructions.push_back(Instruction::Ptr(new instruction::Slide(constructorPattern->Params.size())));
 
     uint8_t newTag = type->Constructors[constructorPattern->ConstructorName].Tag;
     if (jump->TagMappings.find(newTag) != jump->TagMappings.end())
@@ -152,8 +139,7 @@ namespace swallow::compiler::ast
     return branchInstructions;
   }
 
-  static void CheckCompileResult(
-    const instruction::Jump *jump, const type::Data *type, const yy::location &Location)
+  static void CheckCompileResult(const instruction::Jump *jump, const type::Data *type, const yy::location &Location)
   {
     for (const auto &constructorPair : type->Constructors)
       {
@@ -183,15 +169,13 @@ namespace swallow::compiler::ast
     if (nullptr != variablePattern)
       CompileVariablePattern(jump, type, branch, machineEnvironment);
     else if (nullptr != constructorPattern)
-      CompileConstructorPattern(
-        jump, type, branch, machineEnvironment, constructorPattern, Location);
+      CompileConstructorPattern(jump, type, branch, machineEnvironment, constructorPattern, Location);
     else
-      utils::Panic("ICE: Cannot compile pattern-matching branch");
+      Panic("ICE: Cannot compile pattern-matching branch");
   }
 
   void Match::Compile(
-    const gmachine::Environment::Ptr &machineEnvironment,
-    std::vector<Instruction::Ptr>    &into) const noexcept
+    const gmachine::Environment::Ptr &machineEnvironment, std::vector<Instruction::Ptr> &into) const noexcept
   {
     auto *type = dynamic_cast<type::Data *>(With->NodeType.get());
 
@@ -199,14 +183,14 @@ namespace swallow::compiler::ast
       {
         std::stringstream with;
         With->Dump(0, with);
-        utils::Panic(
-          "ICE: Cannot compile expression to g-machine instruction for match "
+        Panic(fmt::format(
+          "ICE: Cannot compile expression to gmachine instruction for match "
           "expr {} at ({}:{} - {}:{})",
           with.str(),
           Location.begin.line,
           Location.begin.column,
           Location.end.line,
-          Location.begin.column);
+          Location.begin.column));
       }
 
     auto *jump = new instruction::Jump();
diff --git a/compiler/ast/type.cpp b/compiler/ast/type.cpp
index 88bdc49..9c9fe8b 100644
--- a/compiler/ast/type.cpp
+++ b/compiler/ast/type.cpp
@@ -27,15 +27,14 @@
 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include "type.hpp"
+#include "type/type.hpp"
 #include "ast.hpp"
-#include "code.hpp"
+#include "diagnostics/code.hpp"
 #include "diagnostics/reporter.hpp"
 #include "type/environment.hpp"
 #include <algorithm>
 #include <format>
 #include <sstream>
-#include <utils.h>
 #include <vector>
 
 using namespace swallow::compiler::utils;
@@ -43,16 +42,16 @@ using namespace swallow::compiler::utils;
 namespace swallow::compiler::ast
 {
 
-  auto Int::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-    const noexcept -> Result<type::Type::Ptr, Void>
+  auto Int::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+    -> tl::expected<type::Type::Ptr, std::nullptr_t>
   {
-    return Ok(type::Type::Ptr(new type::Base("Int")));
+    return type::Type::Ptr(new type::Base("Int"));
   }
 
-  auto LID::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-    const noexcept -> Result<type::Type::Ptr, Void>
+  auto LID::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+    -> tl::expected<type::Type::Ptr, std::nullptr_t>
   {
-    return typeEnvironment.Lookup(ID).or_else([&](const auto &err) {
+    return typeEnvironment.Lookup(ID).map_error([&](const auto &&_) {
       return diagnostics::Reporter::REPORTER->normal(
         Location,
         std::format("'{}' was not declared", ID),
@@ -62,10 +61,10 @@ namespace swallow::compiler::ast
     });
   }
 
-  auto UID::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-    const noexcept -> Result<type::Type::Ptr, Void>
+  auto UID::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+    -> tl::expected<type::Type::Ptr, std::nullptr_t>
   {
-    return typeEnvironment.Lookup(ID).or_else([&](const auto &err) {
+    return typeEnvironment.Lookup(ID).map_error([&](const auto &&_) {
       return diagnostics::Reporter::REPORTER->normal(
         Location,
         std::format("'{}' was not declared", ID),
@@ -75,9 +74,8 @@ namespace swallow::compiler::ast
     });
   }
 
-  auto
-    Binop::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> Result<type::Type::Ptr, Void>
+  auto Binop::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+    -> tl::expected<type::Type::Ptr, std::nullptr_t>
   {
     const std::string operatorName = OperatorToString(Operator);
 
@@ -85,22 +83,22 @@ namespace swallow::compiler::ast
     type::Type::Ptr rightType = Right->CommonTypeCheck(typeManager, typeEnvironment);
 
     type::Type::Ptr functionType = typeEnvironment.Lookup(operatorName)
-                                     .or_else([&](const auto &err) {
-      return diagnostics::Reporter::REPORTER->normal(
-        Location,
-        std::format("'{}' was not declared", operatorName),
-        "The definition of this operator cannot be found in the "
-        "context",
-        "Operator is undefined",
-        diagnostics::BINOP_NOT_DECLARED);
-    }).unwrap();
+                                     .map_error([&](const auto &&_) {
+                                       return diagnostics::Reporter::REPORTER->normal(
+                                         Location,
+                                         std::format("'{}' was not declared", operatorName),
+                                         "The definition of this operator cannot be found in the "
+                                         "context",
+                                         "Operator is undefined",
+                                         diagnostics::BINOP_NOT_DECLARED);
+                                     })
+                                     .value();
 
     type::Type::Ptr returnType = typeManager.NewType();
     type::Type::Ptr arrowOne = type::Type::Ptr(new type::Arrow(rightType, returnType));
     type::Type::Ptr arrowTwo = type::Type::Ptr(new type::Arrow(leftType, arrowOne));
 
-    typeManager.Unify(arrowTwo, functionType)
-      .or_else([&](const auto &err) {
+    typeManager.Unify(arrowTwo, functionType).map_error([&](const auto &&_) {
       std::stringstream expected;
       std::stringstream actual;
 
@@ -118,23 +116,20 @@ namespace swallow::compiler::ast
           actual.str()),
         std::format("'{}' conflicts with '{}'", expected.str(), actual.str()),
         diagnostics::BINOP_TYPE_MISMATCH);
-    }).ignore();
+    });
 
-    return Ok(returnType);
+    return returnType;
   }
 
-  auto Application::TypeCheck(
-    type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
-    -> Result<type::Type::Ptr, Void>
+  auto Application::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+    -> tl::expected<type::Type::Ptr, std::nullptr_t>
   {
     type::Type::Ptr leftType = Left->CommonTypeCheck(typeManager, typeEnvironment);
     type::Type::Ptr rightType = Right->CommonTypeCheck(typeManager, typeEnvironment);
-
     type::Type::Ptr returnType = typeManager.NewType();
     type::Type::Ptr arrowType = type::Type::Ptr(new type::Arrow(rightType, returnType));
 
-    typeManager.Unify(arrowType, leftType)
-      .or_else([&](const auto &err) {
+    typeManager.Unify(arrowType, leftType).map_error([&](const auto &&_) {
       std::stringstream expected;
       std::stringstream actual;
 
@@ -144,24 +139,19 @@ namespace swallow::compiler::ast
       return diagnostics::Reporter::REPORTER->normal(
         Location,
         std::format("Type checking failed for function application"),
-        std::format(
-          "This expression has type '{}', but here may need a '{}'",
-          actual.str(),
-          expected.str()),
+        std::format("This expression has type '{}', but here may need a '{}'", actual.str(), expected.str()),
         std::format("'{}' conflicts with '{}'", expected.str(), actual.str()),
         diagnostics::APPLICATION_TYPE_MISMATCH);
-    }).ignore();
+    });
 
-    return Ok(returnType);
+    return returnType;
   }
 
-  auto
-    Match::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment)
-      const noexcept -> Result<type::Type::Ptr, Void>
+  auto Match::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+    -> tl::expected<type::Type::Ptr, std::nullptr_t>
   {
     type::Variable *var = nullptr;
-    type::Type::Ptr matchType =
-      typeManager.Resolve(With->CommonTypeCheck(typeManager, typeEnvironment), var);
+    type::Type::Ptr matchType = typeManager.Resolve(With->CommonTypeCheck(typeManager, typeEnvironment), var);
     type::Type::Ptr branchType = typeManager.NewType();
 
     for (const auto &branch : Branches)
@@ -169,11 +159,9 @@ namespace swallow::compiler::ast
         type::Environment newEnvironment = typeEnvironment.Scope();
         branch->Patt->Match(matchType, typeManager, newEnvironment);
 
-        type::Type::Ptr currentBranchType =
-          branch->Expr->CommonTypeCheck(typeManager, newEnvironment);
+        type::Type::Ptr currentBranchType = branch->Expr->CommonTypeCheck(typeManager, newEnvironment);
 
-        typeManager.Unify(branchType, currentBranchType)
-          .or_else([&](const auto &err) {
+        typeManager.Unify(branchType, currentBranchType).map_error([&](const auto &&_) {
           std::stringstream expected;
           std::stringstream actual;
 
@@ -183,13 +171,10 @@ namespace swallow::compiler::ast
           return diagnostics::Reporter::REPORTER->normal(
             branch->Location,
             "Type checking failed for Match expression's branch",
-            std::format(
-              "This branch has type '{}', but here may need a '{}'",
-              actual.str(),
-              expected.str()),
+            std::format("This branch has type '{}', but here may need a '{}'", actual.str(), expected.str()),
             std::format("'{}' conflicts with '{}'", expected.str(), actual.str()),
             diagnostics::MATCH_EXPR_BRANCHE_TYPE_CONFLICTS);
-        }).ignore();
+        });
       }
 
     matchType = typeManager.Resolve(matchType, var);
@@ -203,32 +188,29 @@ namespace swallow::compiler::ast
           diagnostics::MATCH_NON_DATA_TYPE);
       }
 
-    return Ok(branchType);
+    return branchType;
   }
 
   void VariablePattern::Match(
-    type::Type::Ptr    type,
-    type::Manager     &typeManager,
-    type::Environment &typeEnvironment) const noexcept
+    type::Type::Ptr type, type::Manager &typeManager, type::Environment &typeEnvironment) const noexcept
   {
     typeManager.Bind(Variable, type);
   }
 
   void ConstructorPattern::Match(
-    type::Type::Ptr    type,
-    type::Manager     &typeManager,
-    type::Environment &typeEnvironment) const noexcept
+    type::Type::Ptr type, type::Manager &typeManager, type::Environment &typeEnvironment) const noexcept
   {
     type::Type::Ptr constructorType = typeEnvironment.Lookup(ConstructorName)
-                                        .or_else([&](const auto &err) {
-      return diagnostics::Reporter::REPORTER->normal(
-        Location,
-        std::format("'{}' was not declared", ConstructorName),
-        "The definition of this constructor cannot be found in the "
-        "context",
-        "Constructor is undefined",
-        diagnostics::CONSTRUCTOR_NOT_DECLARED);
-    }).unwrap();
+                                        .map_error([&](const auto &&_) {
+                                          return diagnostics::Reporter::REPORTER->normal(
+                                            Location,
+                                            std::format("'{}' was not declared", ConstructorName),
+                                            "The definition of this constructor cannot be found in the "
+                                            "context",
+                                            "Constructor is undefined",
+                                            diagnostics::CONSTRUCTOR_NOT_DECLARED);
+                                        })
+                                        .value();
 
     std::for_each(Params.begin(), Params.end(), [&](const std::string &param) {
       auto *arrow = dynamic_cast<type::Arrow *>(constructorType.get());
@@ -247,8 +229,7 @@ namespace swallow::compiler::ast
       constructorType = arrow->Right;
     });
 
-    typeManager.Unify(type, constructorType)
-      .or_else([&](const auto &err) {
+    typeManager.Unify(type, constructorType).map_error([&](const auto &&_) {
       std::stringstream expected;
       std::stringstream actual;
 
@@ -258,17 +239,13 @@ namespace swallow::compiler::ast
       return diagnostics::Reporter::REPORTER->normal(
         Location,
         "Type checking failed for pattern",
-        std::format(
-          "This pattern has type '{}', but here may need a '{}'",
-          actual.str(),
-          expected.str()),
+        std::format("This pattern has type '{}', but here may need a '{}'", actual.str(), expected.str()),
         std::format("'{}' conflicts with '{}'", expected.str(), actual.str()),
         diagnostics::PATTERN_MISMATCH);
-    }).ignore();
+    });
   }
 
-  void Fn::PreScanTypes(
-    type::Manager &typeManager, type::Environment &typeEnvironment) noexcept
+  void Fn::PreScanTypes(type::Manager &typeManager, type::Environment &typeEnvironment) noexcept
   {
     ReturnType = typeManager.NewType();
     type::Type::Ptr fullType = ReturnType;
@@ -282,8 +259,7 @@ namespace swallow::compiler::ast
     typeEnvironment.Bind(Name, fullType);
   }
 
-  void Fn::TypeCheck(
-    type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
+  void Fn::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
   {
     type::Environment newEnvironment = typeEnvironment.Scope();
 
@@ -298,8 +274,7 @@ namespace swallow::compiler::ast
 
     auto bodyType = Body->CommonTypeCheck(typeManager, newEnvironment);
 
-    typeManager.Unify(ReturnType, bodyType)
-      .or_else([&](const auto &err) {
+    typeManager.Unify(ReturnType, bodyType).map_error([&](const auto &&_) {
       std::stringstream expected;
       std::stringstream actual;
 
@@ -309,17 +284,13 @@ namespace swallow::compiler::ast
       return diagnostics::Reporter::REPORTER->normal(
         Location,
         "Type checking failed for function",
-        std::format(
-          "This function has type '{}', but the body has type '{}'",
-          expected.str(),
-          actual.str()),
+        std::format("This function has type '{}', but the body has type '{}'", expected.str(), actual.str()),
         std::format("'{}' conflicts with '{}'", expected.str(), actual.str()),
         diagnostics::MATCH_EXPR_BRANCHE_TYPE_CONFLICTS);
-    }).ignore();
+    });
   }
 
-  void Data::PreScanTypes(
-    type::Manager &typeManager, type::Environment &typeEnvironment) noexcept
+  void Data::PreScanTypes(type::Manager &typeManager, type::Environment &typeEnvironment) noexcept
   {
     auto   *thisType = new type::Data(Name);
     auto    returnType = type::Type::Ptr(thisType);
@@ -331,36 +302,29 @@ namespace swallow::compiler::ast
         thisType->Constructors[constructor->Name] = {nextTag++};
 
         auto fullType = returnType;
-        std::for_each(
-          constructor->Types.rbegin(),
-          constructor->Types.rend(),
-          [&](const auto &typeName) {
-          fullType = type::Type::Ptr(
-            new type::Arrow(type::Type::Ptr(new type::Base(typeName)), fullType));
+        std::for_each(constructor->Types.rbegin(), constructor->Types.rend(), [&](const auto &typeName) {
+          fullType = type::Type::Ptr(new type::Arrow(type::Type::Ptr(new type::Base(typeName)), fullType));
         });
 
         typeEnvironment.Bind(constructor->Name, fullType);
       }
   }
 
-  void Data::TypeCheck(
-    type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept
-  {}
+  void Data::TypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) const noexcept {}
 
-  auto AST::CommonTypeCheck(
-    type::Manager           &typeManager,
-    const type::Environment &typeEnvironment) noexcept -> type::Type::Ptr
+  auto AST::CommonTypeCheck(type::Manager &typeManager, const type::Environment &typeEnvironment) noexcept
+    -> type::Type::Ptr
   {
     NodeType = TypeCheck(typeManager, typeEnvironment)
-                 .or_else([&](const auto &err) {
-      return diagnostics::Reporter::REPORTER->normal(
-        Location,
-        "Type checking failed",
-        "Wrong type here",
-        std::format("No more information"),
-        diagnostics::EXPR_TYPE_CHECKING_FAILED);
-    }).unwrap();
-    ;
+                 .map_error([&](const auto &&_) {
+                   return diagnostics::Reporter::REPORTER->normal(
+                     Location,
+                     "Type checking failed",
+                     "Wrong type here",
+                     std::format("No more information"),
+                     diagnostics::EXPR_TYPE_CHECKING_FAILED);
+                 })
+                 .value();
     return NodeType;
   }
 
diff --git a/compiler/compiler.cpp b/compiler/compiler.cpp
index 011f2e4..16c0591 100644
--- a/compiler/compiler.cpp
+++ b/compiler/compiler.cpp
@@ -29,10 +29,8 @@
 
 #include "compiler.h"
 #include "ast/ast.hpp"
-#include "parser.h"
 #include "diagnostics/reporter.hpp"
-#include "runtime/node.h"
-#include "runtime/runtime.h"
+#include "parser/parser.h"
 #include <chrono>
 
 using namespace swallow::compiler;
@@ -42,12 +40,11 @@ namespace swallow::compiler
   auto Compiler(const CompilerOptions &options) noexcept -> int
   {
 #ifdef TEST_RUNTIME
-    auto *result = runtime::Runtime::Eval(reinterpret_cast<runtime::node::Base *>(
-      runtime::node::Global::Allocate(EntryPoint, 0)));
+    auto *result =
+      runtime::Runtime::Eval(reinterpret_cast<runtime::node::Base *>(runtime::node::Global::Allocate(EntryPoint, 0)));
 
     std::cout << std::format(
-      "test runtime...{}\n",
-      reinterpret_cast<swallow::compiler::runtime::node::Int *>(result)->Value);
+      "test runtime...{}\n", reinterpret_cast<swallow::compiler::runtime::node::Int *>(result)->Value);
 #endif
 
     CompileUnit::FILE = new CompileUnit(options.file);
@@ -62,8 +59,7 @@ namespace swallow::compiler
     const auto end = std::chrono::system_clock::now();
 
     std::cout << std::format(
-      "ok ({} ms)\n",
-      double(std::chrono::duration_cast<std::chrono::microseconds>(end - start).count()));
+      "ok ({} ms)\n", double(std::chrono::duration_cast<std::chrono::microseconds>(end - start).count()));
 
     delete CompileUnit::FILE;
     delete diagnostics::Reporter::REPORTER;
diff --git a/compiler/compiler.h b/compiler/compiler.h
index 5cf140f..61e74db 100644
--- a/compiler/compiler.h
+++ b/compiler/compiler.h
@@ -31,8 +31,8 @@
 #define SWALLOW_COMPILER_COMPILER_H
 
 #include <fstream>
-#include <string>
 #include <optional>
+#include <string>
 
 namespace swallow::compiler
 {
@@ -44,9 +44,7 @@ namespace swallow::compiler
 
     inline static CompileUnit *FILE = nullptr;
 
-    explicit CompileUnit(const std::string &FilePath)
-      : FilePath(FilePath), FileValue(ReadEntireFile(FilePath))
-    {}
+    explicit CompileUnit(const std::string &FilePath) : FilePath(FilePath), FileValue(ReadEntireFile(FilePath)) {}
 
   private:
     static auto ReadEntireFile(const std::string &FilePath) -> std::string
@@ -79,21 +77,20 @@ namespace swallow::compiler
     std::optional<bool> verbose = false;
 
   public:
-    inline static std::string HELP =
-      "USAGE: swa compile [FLAGS] [OPTIONS] file \n"
-      "\n"
-      "FLAGS:\n"
-      "    -v, --verbose\tThe swallow source file path\n"
-      "    -d, --dump_ast\tDump the ast\n"
-      "    -d, --dump_types\tDump the definition types\n"
-      "    -d, --dump_gmachine_ir\tDump the G-Machine instructions\n"
-      "\n"
-      "OPTIONS:\n"
-      "    -h, --help <help>\n"
-      "    --version <version>\n"
-      "\n"
-      "ARGS:\n"
-      "    file";
+    inline static std::string HELP = "USAGE: swa compile [FLAGS] [OPTIONS] file \n"
+                                     "\n"
+                                     "FLAGS:\n"
+                                     "    -v, --verbose\tThe swallow source file path\n"
+                                     "    -d, --dump_ast\tDump the ast\n"
+                                     "    -d, --dump_types\tDump the definition types\n"
+                                     "    -d, --dump_gmachine_ir\tDump the G-Machine instructions\n"
+                                     "\n"
+                                     "OPTIONS:\n"
+                                     "    -h, --help <help>\n"
+                                     "    --version <version>\n"
+                                     "\n"
+                                     "ARGS:\n"
+                                     "    file";
     inline static std::string VERSION = "0.0.1";
   };
 
diff --git a/compiler/diagnostics/diagnostics.cpp b/compiler/diagnostics/diagnostics.cpp
index e557d30..f8b19e3 100644
--- a/compiler/diagnostics/diagnostics.cpp
+++ b/compiler/diagnostics/diagnostics.cpp
@@ -1,14 +1,14 @@
 #include "diagnostics.h"
 
-#include "panic/panic.hpp"
-#include "termcolor.hpp"
 #include "utils.h"
+#include "utils/termcolor.hpp"
 #include <algorithm>
 #include <iomanip>
 #include <iostream>
 #include <map>
 #include <regex>
 #include <utility>
+#include "error/errors.hpp"
 
 namespace swallow::compiler::diagnostics
 {
@@ -38,7 +38,7 @@ namespace swallow::compiler::diagnostics
       case ReportType::WARNING:
         return "W";
       default:
-        utils::Panic("This report type is not implemented yet.");
+        Panic("This report type is not implemented yet.");
       }
   }
 
@@ -53,7 +53,7 @@ namespace swallow::compiler::diagnostics
       case ReportType::WARNING:
         return "Warning";
       default:
-        utils::Panic("This report type is not implemented yet.");
+        Panic("This report type is not implemented yet.");
       }
 #define ERROR 0
   }
@@ -145,8 +145,7 @@ namespace swallow::compiler::diagnostics
 
   auto AscendingLabels::operator()(const Label *first, const Label *second) const -> bool
   {
-    auto difference = (int) first->get_span().get_start_index()
-                      - (int) second->get_span().get_start_index();
+    auto difference = (int) first->get_span().get_start_index() - (int) second->get_span().get_start_index();
     if (difference == 0)
       return first->get_span().get_end_index() < second->get_span().get_end_index();
 
@@ -155,8 +154,7 @@ namespace swallow::compiler::diagnostics
 
   auto DescendingLabels::operator()(const Label *first, const Label *second) const -> bool
   {
-    auto difference = (int) first->get_span().get_start_index()
-                      - (int) second->get_span().get_start_index();
+    auto difference = (int) first->get_span().get_start_index() - (int) second->get_span().get_start_index();
     if (difference == 0)
       return first->get_span().get_end_index() < second->get_span().get_end_index();
 
@@ -171,16 +169,12 @@ namespace swallow::compiler::diagnostics
 
   auto Span::relative_to(const Span &span) const -> Span
   {
-    return {
-      span.get_details(),
-      this->start_index_ - span.start_index_,
-      this->end_index_ - span.start_index_};
+    return {span.get_details(), this->start_index_ - span.start_index_, this->end_index_ - span.start_index_};
   }
 
   auto Span::is_inside_span(const Span &span) const -> bool
   {
-    return (this->start_index_ <= span.start_index_)
-           && (this->end_index_ >= span.end_index_);
+    return (this->start_index_ <= span.start_index_) && (this->end_index_ >= span.end_index_);
   }
 
   auto Span::get_start_index() const -> size_t { return this->start_index_; }
@@ -199,10 +193,7 @@ namespace swallow::compiler::diagnostics
     this->line_ = this->span_.get_details()->get_label_line(*this);
   }
 
-  auto Label::get_message() const -> const std::optional<std::string> &
-  {
-    return this->message_;
-  }
+  auto Label::get_message() const -> const std::optional<std::string> & { return this->message_; }
 
   auto Label::get_span() const -> const Span & { return this->span_; }
 
@@ -241,8 +232,7 @@ namespace swallow::compiler::diagnostics
     return {this->message_, this->span_.value(), color};
   }
 
-  Details::Details(std::string source, std::string path)
-    : source_(std::move(source)), path_(std::move(path))
+  Details::Details(std::string source, std::string path) : source_(std::move(source)), path_(std::move(path))
   {
     Span *current_span = nullptr;
     for (auto index = 0U; index < this->source_.size(); index++)
@@ -284,26 +274,19 @@ namespace swallow::compiler::diagnostics
           return index;
       }
 
-    utils::Panic("Couldn't find the associated line for this span.");
+    Panic("Couldn't find the associated line for this span.");
   }
 
-  auto Details::get_line_spans() const -> const std::vector<std::shared_ptr<Span>> &
-  {
-    return this->line_spans_;
-  }
+  auto Details::get_line_spans() const -> const std::vector<std::shared_ptr<Span>> & { return this->line_spans_; }
 
   auto Details::get_source() const -> const std::string & { return this->source_; }
 
   auto Details::get_path() const -> const std::string & { return this->path_; }
 
   LabelGroup::LabelGroup(Details *general_details_, std::vector<const Label *> labels)
-    : first_label_()
-    , last_label_()
-    , details_(general_details_)
-    , labels_(std::move(labels))
+    : first_label_(), last_label_(), details_(general_details_), labels_(std::move(labels))
   {
-    assertm(
-      !this->labels_.empty(), "Couldn't find the last labels as there are no labels.");
+    assertm(!this->labels_.empty(), "Couldn't find the last labels as there are no labels.");
 
     auto ascending_labels(this->labels_);
     std::sort(ascending_labels.begin(), ascending_labels.end(), AscendingLabels());
@@ -332,9 +315,7 @@ namespace swallow::compiler::diagnostics
         auto line_number = line_index + 1;
         output << "  "
                << COLOR_RGB(
-                    std::setw(spaces_prefix.length() - 3)
-                      << std::setfill(' ') << line_number << " |  ",
-                    COLOR_GREY);
+                    std::setw(spaces_prefix.length() - 3) << std::setfill(' ') << line_number << " |  ", COLOR_GREY);
 
         auto labels = this->find_labels_in_line(line_index);
         this->print_colored_source_line(output, *line_span, labels);
@@ -472,8 +453,7 @@ namespace swallow::compiler::diagnostics
       }
   }
 
-  void LabelGroup::print_colored_source_line(
-    std::ostream &output, const Span &label_span, const Labels &labels) const
+  void LabelGroup::print_colored_source_line(std::ostream &output, const Span &label_span, const Labels &labels) const
   {
     const auto source = this->details_->get_line_source(label_span);
 
@@ -501,9 +481,7 @@ namespace swallow::compiler::diagnostics
         output << current_char;
 
         auto starting_index = char_index;
-        for (char_index++;
-             char_index < starting_index + label->get_span().get_width() + 1;
-             char_index++)
+        for (char_index++; char_index < starting_index + label->get_span().get_width() + 1; char_index++)
           {
             if (mapped_labels.contains(char_index))
               break;
@@ -556,9 +534,7 @@ namespace swallow::compiler::diagnostics
       {
         const auto *next_label = *iterator;
 
-        if (
-          next_label->get_span().get_end_index()
-          < current_label->get_span().get_start_index())
+        if (next_label->get_span().get_end_index() < current_label->get_span().get_start_index())
           current_label = next_label;
         else
           {
@@ -622,8 +598,7 @@ namespace swallow::compiler::diagnostics
 
   void FileGroup::print(std::ostream &output, const std::string &spaces_prefix) const
   {
-    output << COLOR_RGB("-[", COLOR_GREY)
-           << COLOR_RGB(this->details_->get_path(), COLOR_WHITE)
+    output << COLOR_RGB("-[", COLOR_GREY) << COLOR_RGB(this->details_->get_path(), COLOR_WHITE)
            << COLOR_RGB("]", COLOR_GREY);
     output << "\n";
 
@@ -662,31 +637,20 @@ namespace swallow::compiler::diagnostics
     return biggest_number;
   }
 
-  auto FileGroup::get_label_groups() const -> const std::vector<LabelGroup> &
-  {
-    return this->label_groups_;
-  }
+  auto FileGroup::get_label_groups() const -> const std::vector<LabelGroup> & { return this->label_groups_; }
 
   auto FileGroup::get_details() const -> Details * { return this->details_; }
 
   Report::Report(
-    ReportType                 type,
-    std::string                message,
-    size_t                     code,
-    std::vector<Label>         labels,
-    std::optional<std::string> note)
-    : note_(std::move(note))
-    , labels_(std::move(labels))
-    , message_(std::move(message))
-    , type_(type)
-    , code_(code)
+    ReportType type, std::string message, size_t code, std::vector<Label> labels, std::optional<std::string> note)
+    : note_(std::move(note)), labels_(std::move(labels)), message_(std::move(message)), type_(type), code_(code)
   {}
 
   void Report::print(std::ostream &output) const
   {
     output << COLOR_RGB(
-      "[" << report_type_to_prefix(this->type_) << std::setw(3) << std::setfill('0')
-          << this->code_ << "] " << report_type_to_string(this->type_) << ":",
+      "[" << report_type_to_prefix(this->type_) << std::setw(3) << std::setfill('0') << this->code_ << "] "
+          << report_type_to_string(this->type_) << ":",
       COLOR_RED)
            << " " << COLOR_RGB(this->message_, COLOR_WHITE);
     output << "\n";
@@ -725,15 +689,13 @@ namespace swallow::compiler::diagnostics
 
     if (this->note_)
       {
-        output << spaces_prefix << COLOR_RGB("o-- ", COLOR_GREY)
-               << COLOR_RGB("Note: ", COLOR_BEACH);
+        output << spaces_prefix << COLOR_RGB("o-- ", COLOR_GREY) << COLOR_RGB("Note: ", COLOR_BEACH);
         print_formatted_text(output, this->note_.value());
         output << "\n";
       }
 
     auto dashes_prefix = biggest_number_width + 3;
-    output << COLOR_RGB(repeat_string("-", dashes_prefix), COLOR_GREY)
-           << COLOR_RGB("/", COLOR_GREY);
+    output << COLOR_RGB(repeat_string("-", dashes_prefix), COLOR_GREY) << COLOR_RGB("/", COLOR_GREY);
     output << "\n";
   }
 
@@ -760,10 +722,7 @@ namespace swallow::compiler::diagnostics
     return file_groups;
   }
 
-  auto Report::get_note() const -> const std::optional<std::string> &
-  {
-    return this->note_;
-  }
+  auto Report::get_note() const -> const std::optional<std::string> & { return this->note_; }
 
   auto Report::get_labels() const -> const std::vector<Label> & { return this->labels_; }
 
@@ -810,11 +769,6 @@ namespace swallow::compiler::diagnostics
     assertm(this->type_, "A type is required to build a report.");
     assertm(this->message_, "A message is required to build a report.");
     assertm(this->code_, "A message is required to build a report.");
-    return {
-      this->type_.value(),
-      this->message_.value(),
-      this->code_.value(),
-      this->labels_,
-      this->note_};
+    return {this->type_.value(), this->message_.value(), this->code_.value(), this->labels_, this->note_};
   }
 } // namespace swallow::compiler::diagnostics
diff --git a/compiler/diagnostics/diagnostics.h b/compiler/diagnostics/diagnostics.h
index 314f186..7e0477b 100644
--- a/compiler/diagnostics/diagnostics.h
+++ b/compiler/diagnostics/diagnostics.h
@@ -7,15 +7,17 @@
 #include <string>
 #include <vector>
 
-#define COLOR_BY_TYPE(type, text)                                                        \
-  color_by_type(std::cout, type) << text << termcolor::reset
-#define COLOR_RGB(text, rgb) termcolor::color<rgb> << text << termcolor::reset
+#define COLOR_BY_TYPE(type, text) color_by_type(std::cout, type) << text << termcolor::reset
+#define COLOR_RGB(text, rgb)      termcolor::color<rgb> << text << termcolor::reset
 
-#define assertm(exp, msg)    assert(((void) msg, exp))
+#define assertm(exp, msg)         assert(((void) msg, exp))
 
 namespace swallow::compiler::diagnostics
 {
 
+#ifdef _WIN32
+#undef ERROR
+#endif
   enum class ReportType
   {
     ERROR,
@@ -133,8 +135,7 @@ namespace swallow::compiler::diagnostics
 
     [[nodiscard]] auto get_label_line(const Label &label) const -> size_t;
 
-    [[nodiscard]] auto
-      get_line_spans() const -> const std::vector<std::shared_ptr<Span>> &;
+    [[nodiscard]] auto get_line_spans() const -> const std::vector<std::shared_ptr<Span>> &;
 
     [[nodiscard]] auto get_source() const -> const std::string &;
 
@@ -162,11 +163,9 @@ namespace swallow::compiler::diagnostics
       std::ostream              &output,
       const std::string         &spaces_prefix) -> void;
 
-    auto print_colored_source_line(
-      std::ostream &output, const Span &label_span, const Labels &labels) const -> void;
+    auto print_colored_source_line(std::ostream &output, const Span &label_span, const Labels &labels) const -> void;
 
-    [[nodiscard]] static auto
-      find_label_levels(const Labels &labels) -> std::vector<Labels>;
+    [[nodiscard]] static auto find_label_levels(const Labels &labels) -> std::vector<Labels>;
 
     [[nodiscard]] static auto find_remove_overlapping_labels(Labels &labels) -> Labels;
 
@@ -209,11 +208,7 @@ namespace swallow::compiler::diagnostics
   {
   public:
     Report(
-      ReportType                 type,
-      std::string                message,
-      size_t                     code,
-      std::vector<Label>         labels,
-      std::optional<std::string> note);
+      ReportType type, std::string message, size_t code, std::vector<Label> labels, std::optional<std::string> note);
 
     auto print(std::ostream &output) const -> void;
 
diff --git a/compiler/diagnostics/reporter.cpp b/compiler/diagnostics/reporter.cpp
index 7e30522..38d3ae5 100644
--- a/compiler/diagnostics/reporter.cpp
+++ b/compiler/diagnostics/reporter.cpp
@@ -40,21 +40,22 @@ namespace swallow::compiler::diagnostics
     const std::string              &&msg,
     const std::string              &&labelMsg,
     const std::string              &&note,
-    const std::uint32_t             &code) -> Err<Void>
+    const std::uint32_t             &code) -> std::nullptr_t
   {
-
+#ifdef _WIN32
+#undef ERROR
+#endif
+    std::cout << std::endl;
     ReportBuilder()
       .with_type(ReportType::ERROR)
       .with_message(msg)
       .with_code(code)
-      .add_label(LabelBuilder()
-                   .with_message(labelMsg)
-                   .with_span(
-                     {&Detail,
-                      static_cast<size_t>(loc.begin.column - 1),
-                      static_cast<size_t>(loc.end.column - 1)})
-                   .with_color(ColorType::RED)
-                   .build())
+      .add_label(
+        LabelBuilder()
+          .with_message(labelMsg)
+          .with_span({&Detail, static_cast<size_t>(loc.begin.column - 1), static_cast<size_t>(loc.end.column - 1)})
+          .with_color(ColorType::RED)
+          .build())
       .with_note(note)
       .build()
       .print(std::cout);
diff --git a/compiler/diagnostics/reporter.hpp b/compiler/diagnostics/reporter.hpp
index 193e31b..2a1eee6 100644
--- a/compiler/diagnostics/reporter.hpp
+++ b/compiler/diagnostics/reporter.hpp
@@ -33,7 +33,7 @@
 #include "compiler.h"
 #include "diagnostics/diagnostics.h"
 #include "parser/bison_parser.hpp"
-#include "result/result.hpp"
+#include <tl/expected.hpp>
 
 namespace swallow::compiler::diagnostics
 {
@@ -44,16 +44,14 @@ namespace swallow::compiler::diagnostics
   public:
     inline static Reporter *REPORTER = nullptr;
 
-    explicit Reporter()
-      : Detail({CompileUnit::FILE->FileValue, CompileUnit::FILE->FilePath})
-    {}
+    explicit Reporter() : Detail({CompileUnit::FILE->FileValue, CompileUnit::FILE->FilePath}) {}
 
     [[noreturn]] auto normal(
       const yy::parser::location_type &loc,
       const std::string              &&msg,
       const std::string              &&labelMsg,
       const std::string              &&note,
-      const std::uint32_t             &code) -> utils::Err<utils::Void>;
+      const std::uint32_t             &code) -> std::nullptr_t;
   };
 
 } // namespace swallow::compiler::diagnostics
diff --git a/compiler/error/errors.hpp b/compiler/error/errors.hpp
new file mode 100644
index 0000000..24524e6
--- /dev/null
+++ b/compiler/error/errors.hpp
@@ -0,0 +1,69 @@
+// Copyright (c) 2023 Muqiu Han
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//     * Redistributions of source code must retain the above copyright notice,
+//       this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above copyright
+//     notice,
+//       this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//     * Neither the name of Swallow nor the names of its contributors
+//       may be used to endorse or promote products derived from this software
+//       without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef SWALLOW_COMPILER_ERRORS_HPP
+#define SWALLOW_COMPILER_ERRORS_HPP
+
+#include <exception>
+#include <source_location>
+#include <spdlog/spdlog.h>
+#include <string>
+
+namespace swallow::compiler::error
+{
+  class Error
+  {
+  public:
+    const std::string          message;
+    const std::source_location location;
+
+    auto append(std::string append_message) const noexcept -> void
+    {
+      spdlog::error("{} at ({}:{})", append_message, location.file_name(), location.line());
+    }
+
+    [[noreturn]] auto panic() const noexcept -> void
+    {
+      spdlog::error("{} at ({}:{})", message, location.file_name(), location.line());
+      std::terminate();
+    }
+  };
+
+#define _Error(message)                                                                                                \
+  swallow::compiler::error::Error { message, std::source_location::current() }
+
+#define Unimplemented()                                                                                                \
+  _Error(fmt::format("unimplemented function: {}", std::source_location::current().function_name())).panic()
+
+#define Panic(message) _Error(fmt::format("{}", message)).panic()
+
+#define Err(message)   tl::make_unexpected(_Error(message))
+}; // namespace swallow::compiler::error
+
+#endif /* SWALLOW_COMPILER_ERRORS_HPP */
diff --git a/compiler/flex_bison.sh b/compiler/flex_bison.sh
deleted file mode 100644
index cc2374b..0000000
--- a/compiler/flex_bison.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-flex -o ./lexer/flex_lexer.cpp ./lexer/lexer.l
-bison -o ./parser/bison_parser.cpp -d ./parser/parser.y
\ No newline at end of file
diff --git a/compiler/g-machine/binop.cpp b/compiler/gmachine/binop.cpp
similarity index 95%
rename from compiler/g-machine/binop.cpp
rename to compiler/gmachine/binop.cpp
index 204e75f..6d90194 100644
--- a/compiler/g-machine/binop.cpp
+++ b/compiler/gmachine/binop.cpp
@@ -28,7 +28,6 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "binop.hpp"
-#include "panic/panic.hpp"
 
 namespace swallow::compiler::gmachine
 {
@@ -46,7 +45,7 @@ namespace swallow::compiler::gmachine
         return {"/"};
       }
 
-    utils::Panic("ICE: OperatorToString");
+    Panic("ICE: OperatorToString");
   }
 
   [[nodiscard]] auto Binop::Action(utils::Binop op) noexcept -> std::string
@@ -63,6 +62,6 @@ namespace swallow::compiler::gmachine
         return {"divide"};
       }
 
-    utils::Panic("ICE: OperatorToString");
+    Panic("ICE: OperatorToString");
   }
 } // namespace swallow::compiler::gmachine
\ No newline at end of file
diff --git a/compiler/g-machine/binop.hpp b/compiler/gmachine/binop.hpp
similarity index 97%
rename from compiler/g-machine/binop.hpp
rename to compiler/gmachine/binop.hpp
index a061c06..c8675d6 100644
--- a/compiler/g-machine/binop.hpp
+++ b/compiler/gmachine/binop.hpp
@@ -30,8 +30,9 @@
 #ifndef SWALLOW_COMPILER_G_MACHINE_BINOP_HPP
 #define SWALLOW_COMPILER_G_MACHINE_BINOP_HPP
 
-#include "binop/binop.hpp"
+#include "utils/binop.hpp"
 #include <string>
+#include "error/errors.hpp"
 
 namespace swallow::compiler::gmachine
 {
diff --git a/compiler/g-machine/environment.cpp b/compiler/gmachine/environment.cpp
similarity index 87%
rename from compiler/g-machine/environment.cpp
rename to compiler/gmachine/environment.cpp
index 0cd46b2..524e3ca 100644
--- a/compiler/g-machine/environment.cpp
+++ b/compiler/gmachine/environment.cpp
@@ -28,13 +28,11 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "environment.hpp"
-#include "optional/optional.hpp"
 
 namespace swallow::compiler::gmachine
 {
 
-  [[nodiscard]] auto
-    Variable::GetOffset(const std::string &name) const noexcept -> tl::optional<int>
+  [[nodiscard]] auto Variable::GetOffset(const std::string &name) const noexcept -> tl::optional<int>
   {
     if (name == Name)
       return tl::make_optional(0);
@@ -64,12 +62,10 @@ namespace swallow::compiler::gmachine
     return false;
   }
 
-  [[nodiscard]] auto
-    Offset::GetOffset(const std::string &name) const noexcept -> tl::optional<int>
+  [[nodiscard]] auto Offset::GetOffset(const std::string &name) const noexcept -> tl::optional<int>
   {
     if (Parent != nullptr)
-      return Parent->GetOffset(name).map(
-        [&](const auto &offset) { return offset + Value; });
+      return Parent->GetOffset(name).map([&](const auto &offset) { return offset + Value; });
 
     return tl::nullopt;
   }
diff --git a/compiler/g-machine/environment.hpp b/compiler/gmachine/environment.hpp
similarity index 74%
rename from compiler/g-machine/environment.hpp
rename to compiler/gmachine/environment.hpp
index 48d0afe..52a7654 100644
--- a/compiler/g-machine/environment.hpp
+++ b/compiler/gmachine/environment.hpp
@@ -30,8 +30,10 @@
 #ifndef SWALLOW_COMPILER_G_MACHINE_ENVIRONMENT_HPP
 #define SWALLOW_COMPILER_G_MACHINE_ENVIRONMENT_HPP
 
-#include "optional/optional.hpp"
 #include <memory>
+#include "error/errors.hpp"
+#include <tl/expected.hpp>
+#include <tl/optional.hpp>
 #include <string>
 
 namespace swallow::compiler::gmachine
@@ -44,11 +46,9 @@ namespace swallow::compiler::gmachine
 
     virtual ~Environment() = default;
 
-    [[nodiscard]] virtual auto
-      GetOffset(const std::string &name) const noexcept -> tl::optional<int> = 0;
+    [[nodiscard]] virtual auto GetOffset(const std::string &name) const noexcept -> tl::optional<int> = 0;
 
-    [[nodiscard]] virtual auto
-      HasVariable(const std::string &name) const noexcept -> bool = 0;
+    [[nodiscard]] virtual auto HasVariable(const std::string &name) const noexcept -> bool = 0;
   };
 
   class Variable : public Environment
@@ -57,15 +57,11 @@ namespace swallow::compiler::gmachine
     std::string Name;
     Ptr         Parent;
 
-    Variable(std::string Name, Ptr Parent)
-      : Name(std::move(Name)), Parent(std::move(Parent))
-    {}
+    Variable(std::string Name, Ptr Parent) : Name(std::move(Name)), Parent(std::move(Parent)) {}
 
-    [[nodiscard]] auto
-      GetOffset(const std::string &name) const noexcept -> tl::optional<int> override;
+    [[nodiscard]] auto GetOffset(const std::string &name) const noexcept -> tl::optional<int> override;
 
-    [[nodiscard]] auto
-      HasVariable(const std::string &name) const noexcept -> bool override;
+    [[nodiscard]] auto HasVariable(const std::string &name) const noexcept -> bool override;
   };
 
   class Offset : public Environment
@@ -76,11 +72,9 @@ namespace swallow::compiler::gmachine
 
     Offset(uint32_t Value, Ptr Parent) : Value(Value), Parent(std::move(Parent)) {}
 
-    [[nodiscard]] auto
-      GetOffset(const std::string &name) const noexcept -> tl::optional<int> override;
+    [[nodiscard]] auto GetOffset(const std::string &name) const noexcept -> tl::optional<int> override;
 
-    [[nodiscard]] auto
-      HasVariable(const std::string &name) const noexcept -> bool override;
+    [[nodiscard]] auto HasVariable(const std::string &name) const noexcept -> bool override;
   };
 
 } // namespace swallow::compiler::gmachine
diff --git a/compiler/g-machine/instruction.cpp b/compiler/gmachine/instruction.cpp
similarity index 62%
rename from compiler/g-machine/instruction.cpp
rename to compiler/gmachine/instruction.cpp
index 51a947c..f31cadf 100644
--- a/compiler/g-machine/instruction.cpp
+++ b/compiler/gmachine/instruction.cpp
@@ -28,103 +28,99 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "instruction.hpp"
-#include "ast.hpp"
+#include "ast/ast.hpp"
+#include "utils/dump.hpp"
 #include <format>
-#include "utils/dump.h"
 
 using namespace swallow::compiler::utils;
 
 namespace swallow::compiler::gmachine::instruction
 {
-  void Pop::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Pop::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("Pop\t\tCount = {}\n", Count);
   }
 
-  void MakeApplication::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void MakeApplication::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << "MakeApplication\n";
   }
 
-  void Pack::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Pack::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("Pack\t\tTag = {}, Size = {}\n", Tag, Size);
   }
 
-  void Split::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Split::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << "Split\n";
   }
 
-  void Slide::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Slide::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("Slide\t\tOffset = {}\n", Offset);
   }
 
-  void Binop::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Binop::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("Binop\t\tOperator = {}\n", ast::Binop::OperatorToString(Operator));
   }
 
-  void Allocation::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Allocation::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("Allocation\t\tAmount = {}\n", Amount);
   }
 
-  void Unwind::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Unwind::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << "Unwind";
   }
 
-  void Jump::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Jump::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << "Jump\n\n";
 
-    for (const auto& branch : Branches)
-      {
-        std::for_each(branch.begin(), branch.end(), [&](const auto& instruction) {
-          instruction->Dump(2, to);
-        });
-      }
+    for (const auto &branch : Branches)
+      std::for_each(branch.begin(), branch.end(), [&](const auto &instruction) { instruction->Dump(2, to); });
     to << "\n";
   }
 
-  void PushInt::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void PushInt::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("PushInt\t\tValue = {}\n", Value);
   }
 
-  void PushGlobal::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void PushGlobal::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("PushGlobal\tName = {}\n", Name);
   }
 
-  void Push::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Push::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("Push\t\tOffset = {}\n", Offset);
   }
 
-  void Eval::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Eval::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << "Eval\n";
   }
 
-  void Update::Dump(uint8_t indent, std::ostream& to) const noexcept
+  void Update::Dump(uint8_t indent, std::ostream &to) const noexcept
   {
-    dump::dumpIndent(indent, to);
+    dump::DumpIndent(indent, to);
     to << std::format("Update\t\tOffset = {}\n", Offset);
   }
 
diff --git a/compiler/g-machine/instruction.hpp b/compiler/gmachine/instruction.hpp
similarity index 79%
rename from compiler/g-machine/instruction.hpp
rename to compiler/gmachine/instruction.hpp
index 88dda6f..8f1ca71 100644
--- a/compiler/g-machine/instruction.hpp
+++ b/compiler/gmachine/instruction.hpp
@@ -31,7 +31,7 @@
 #define SWALLOW_COMPILER_G_MACHINE_INSTRUCTION_HPP
 
 #include "binop.hpp"
-#include "g-machine/environment.hpp"
+#include "gmachine/environment.hpp"
 #include <cstdint>
 #include <map>
 #include <memory>
@@ -47,7 +47,7 @@ namespace swallow::compiler::gmachine::instruction
 
     virtual ~Instruction() = default;
 
-    virtual void Dump(uint8_t indent, std::ostream& to) const noexcept = 0;
+    virtual void Dump(uint8_t indent, std::ostream &to) const noexcept = 0;
   };
 
   class PushInt : public Instruction
@@ -57,7 +57,7 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit PushInt(int Value) : Value(Value) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class PushGlobal : public Instruction
@@ -67,7 +67,7 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit PushGlobal(std::string Name) : Name(std::move(Name)) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Push : public Instruction
@@ -77,7 +77,7 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit Push(uint32_t Offset) : Offset(Offset) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Pop : public Instruction
@@ -87,13 +87,13 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit Pop(uint32_t Count) : Count(Count) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class MakeApplication : public Instruction
   {
   public:
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Update : public Instruction
@@ -103,7 +103,7 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit Update(uint32_t Offset) : Offset(Offset) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Pack : public Instruction
@@ -114,13 +114,13 @@ namespace swallow::compiler::gmachine::instruction
 
     Pack(int Tag, int Size) : Tag(Tag), Size(Size) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Split : public Instruction
   {
   public:
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Slide : public Instruction
@@ -130,7 +130,7 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit Slide(uint32_t Offset) : Offset(Offset) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Binop : public Instruction
@@ -140,13 +140,13 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit Binop(utils::Binop Operator) : Operator(Operator) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Eval : public Instruction
   {
   public:
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Allocation : public Instruction
@@ -156,13 +156,13 @@ namespace swallow::compiler::gmachine::instruction
 
     explicit Allocation(int Amount) : Amount(Amount) {}
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Unwind : public Instruction
   {
   public:
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 
   class Jump : public Instruction
@@ -171,7 +171,7 @@ namespace swallow::compiler::gmachine::instruction
     std::vector<std::vector<Instruction::Ptr>> Branches;
     std::map<uint8_t, uint8_t>                 TagMappings;
 
-    void Dump(uint8_t indent, std::ostream& to) const noexcept override;
+    void Dump(uint8_t indent, std::ostream &to) const noexcept override;
   };
 } // namespace swallow::compiler::gmachine::instruction
 
diff --git a/compiler/ir/context.cpp b/compiler/ir/context.cpp
new file mode 100644
index 0000000..5db5217
--- /dev/null
+++ b/compiler/ir/context.cpp
@@ -0,0 +1,150 @@
+// Copyright (c) 2023 Muqiu Han
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//     * Redistributions of source code must retain the above copyright notice,
+//       this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above copyright
+//     notice,
+//       this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//     * Neither the name of Swallow nor the names of its contributors
+//       may be used to endorse or promote products derived from this software
+//       without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "context.h"
+#include <llvm/ADT/APInt.h>
+#include <llvm/IR/BasicBlock.h>
+#include <llvm/IR/Constants.h>
+#include <llvm/IR/DerivedTypes.h>
+#include <llvm/IR/Function.h>
+#include <llvm/IR/LLVMContext.h>
+#include <llvm/IR/Module.h>
+#include <llvm/IR/Type.h>
+#include <format>
+#include <memory>
+#include <utility>
+
+namespace swallow::compiler::ir::context
+{
+  void LLVMContext::CreateFunctions() noexcept
+  {
+    auto *voidType = llvm::Type::getVoidTy(Context);
+    auto *sizeType = llvm::IntegerType::get(Context, sizeof(size_t) * 8);
+
+    Functions.insert(
+      {"Stack::Initialize",
+       llvm::Function::Create(
+         llvm::FunctionType::get(voidType, {StackPtrType}, false),
+         llvm::Function::LinkageTypes::ExternalLinkage,
+         "Stack::Initialize",
+         &Module)});
+
+    Functions.insert(
+      {"Stack::Free",
+       llvm::Function::Create(
+         llvm::FunctionType::get(voidType, {StackPtrType}, false),
+         llvm::Function::LinkageTypes::ExternalLinkage,
+         "Stack::Free",
+         &Module)});
+  }
+
+  void LLVMContext::CreateTypes() noexcept
+  {
+    StackType = llvm::StructType::create(Context, "Struct");
+    StackPtrType = llvm::PointerType::getUnqual(StackType);
+    TagType = llvm::IntegerType::getInt8Ty(Context);
+  }
+
+  inline static auto CreateNewFunction(
+    const std::string &name,
+    llvm::LLVMContext &Context,
+    llvm::PointerType *StackPtrType,
+    llvm::Module      &Module) noexcept -> std::pair<std::string, llvm::Function *>
+  {
+    auto *voidType = llvm::Type::getVoidTy(Context);
+    auto *functionType = llvm::FunctionType::get(voidType, {StackPtrType}, false);
+    auto  functionName = std::format("swallow_{}", name);
+    auto  functionLinkageType = llvm::Function::LinkageTypes::ExternalLinkage;
+    auto *function = llvm::Function::Create(functionType, functionLinkageType, functionName, &Module);
+
+    return std::make_pair(functionName, function);
+  }
+
+  auto LLVMContext::CreateCustomFunction(const std::string &name, int32_t arity) noexcept -> llvm::Function *
+  {
+    auto &&[newFunctionName, newFunction] = CreateNewFunction(name, Context, StackPtrType, Module);
+    auto *startBlock = llvm::BasicBlock::Create(Context, "EntryPoint", newFunction);
+    auto  newCustomFunction = std::make_unique<CustomFunction>();
+
+    newCustomFunction->Arity = arity;
+    newCustomFunction->Function = newFunction;
+    CustomFunctions.insert({newFunctionName, std::move(newCustomFunction)});
+
+    return newFunction;
+  }
+
+  auto LLVMContext::CreateInt8(int8_t num) noexcept -> llvm::ConstantInt *
+  {
+    return llvm::ConstantInt::get(Context, llvm::APInt(8, 1));
+  }
+
+  auto LLVMContext::CreateInt32(int32_t num) noexcept -> llvm::ConstantInt * {}
+
+  auto LLVMContext::CreateSize(size_t num) noexcept -> llvm::ConstantInt * {}
+
+  auto LLVMContext::CreatePop(llvm::Function *function) noexcept -> llvm::Value *
+  {
+    return Builder.CreateCall(Functions.at("swallow::compiler::runtime::stack::Stack::Pop"), {function->arg_begin()});
+  }
+
+  auto LLVMContext::CreatePeek(llvm::Function *function, llvm::Value *value) noexcept -> llvm::Function * {}
+
+  void LLVMContext::CreatePush(llvm::Function *function, llvm::Value *value) noexcept {}
+
+  void LLVMContext::CreatePopN(llvm::Function *function, llvm::Value *value) noexcept {}
+
+  void LLVMContext::CreateUpdate(llvm::Function *function, llvm::Value *value) noexcept {}
+
+  void LLVMContext::CreatePack(llvm::Function *function, llvm::Value *value) noexcept {}
+
+  void LLVMContext::CreateSplit(llvm::Function *function, llvm::Value *value) noexcept {}
+
+  void LLVMContext::CreateSlide(llvm::Function *function, llvm::Value *value) noexcept {}
+
+  void LLVMContext::CreateAlloc(llvm::Function *function, llvm::Value *value) noexcept {}
+
+  auto LLVMContext::CreateEval(llvm::Value *value) noexcept -> llvm::Value * {}
+
+  auto LLVMContext::CreateNum(llvm::Value *value) noexcept -> llvm::Value * {}
+
+  auto LLVMContext::CreateGlobal(llvm::Value *value) noexcept -> llvm::Value * {}
+
+  auto LLVMContext::CreateApp(llvm::Value *left, llvm::Value *right) noexcept -> llvm::Value * {}
+
+  auto LLVMContext::UnwrapDataTag(llvm::Value *value) noexcept -> llvm::Value * {}
+
+  auto LLVMContext::UnwrapNum(llvm::Value *value) noexcept -> llvm::Value *
+  {
+    auto *type = llvm::PointerType::getUnqual(StructTypes.at("swallow::compiler::runtime::node::Int"));
+    auto *num = Builder.CreatePointerCast(value, type);
+
+    return Builder.CreateLoad(type, Builder.CreateGEP(type, num, {CreateInt32(0), CreateInt32(1)}));
+  }
+
+} // namespace swallow::compiler::ir::context
diff --git a/compiler/ir/context.h b/compiler/ir/context.h
new file mode 100644
index 0000000..b22a998
--- /dev/null
+++ b/compiler/ir/context.h
@@ -0,0 +1,129 @@
+// Copyright (c) 2023 Muqiu Han
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//     * Redistributions of source code must retain the above copyright notice,
+//       this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above copyright
+//     notice,
+//       this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//     * Neither the name of Swallow nor the names of its contributors
+//       may be used to endorse or promote products derived from this software
+//       without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef SWALLOW_COMPILER_LLVM_H
+#define SWALLOW_COMPILER_LLVM_H
+
+#include <llvm/IR/Constants.h>
+#include <llvm/IR/DerivedTypes.h>
+#include <llvm/IR/Function.h>
+#include <llvm/IR/IRBuilder.h>
+#include <llvm/IR/LLVMContext.h>
+#include <llvm/IR/Module.h>
+#include <llvm/IR/Value.h>
+#include <cstdint>
+#include <map>
+#include <memory>
+#include <string>
+
+namespace swallow::compiler::ir::context
+{
+  class LLVMContext
+  {
+  public:
+    class CustomFunction
+    {
+    public:
+      llvm::Function *Function;
+      int32_t         Arity;
+    };
+
+  public:
+    using Ptr = std::unique_ptr<CustomFunction>;
+
+  public:
+    llvm::LLVMContext Context;
+    llvm::Module      Module;
+    llvm::IRBuilder<> Builder;
+
+  public:
+    std::map<std::string, Ptr>                CustomFunctions;
+    std::map<std::string, llvm::Function *>   Functions;
+    std::map<std::string, llvm::StructType *> StructTypes;
+
+  public:
+    llvm::StructType   *StackType;
+    llvm::PointerType  *StackPtrType;
+    llvm::PointerType  *NodePtrType;
+    llvm::IntegerType  *TagType;
+    llvm::FunctionType *FunctionType;
+
+  public:
+    LLVMContext() : Builder(Context), Module("swallow", Context)
+    {
+      CreateTypes();
+      CreateFunctions();
+    }
+
+  public:
+    void CreateTypes() noexcept;
+
+    void CreateFunctions() noexcept;
+
+    auto CreateInt8(int8_t num) noexcept -> llvm::ConstantInt *;
+
+    auto CreateInt32(int32_t num) noexcept -> llvm::ConstantInt *;
+
+    auto CreateSize(size_t num) noexcept -> llvm::ConstantInt *;
+
+    auto CreatePop(llvm::Function *function) noexcept -> llvm::Value *;
+
+    auto CreatePeek(llvm::Function *function, llvm::Value *value) noexcept -> llvm::Function *;
+
+    void CreatePush(llvm::Function *function, llvm::Value *value) noexcept;
+
+    void CreatePopN(llvm::Function *function, llvm::Value *value) noexcept;
+
+    void CreateUpdate(llvm::Function *function, llvm::Value *value) noexcept;
+
+    void CreatePack(llvm::Function *function, llvm::Value *value) noexcept;
+
+    void CreateSplit(llvm::Function *function, llvm::Value *value) noexcept;
+
+    void CreateSlide(llvm::Function *function, llvm::Value *value) noexcept;
+
+    void CreateAlloc(llvm::Function *function, llvm::Value *value) noexcept;
+
+    auto CreateEval(llvm::Value *value) noexcept -> llvm::Value *;
+
+    auto CreateNum(llvm::Value *value) noexcept -> llvm::Value *;
+
+    auto CreateGlobal(llvm::Value *value) noexcept -> llvm::Value *;
+
+    auto CreateApp(llvm::Value *left, llvm::Value *right) noexcept -> llvm::Value *;
+
+    auto CreateCustomFunction(const std::string &name, int32_t arity) noexcept -> llvm::Function *;
+
+    auto UnwrapDataTag(llvm::Value *value) noexcept -> llvm::Value *;
+
+    auto UnwrapNum(llvm::Value *value) noexcept -> llvm::Value *;
+  };
+} // namespace swallow::compiler::ir::context
+
+#endif
diff --git a/compiler/lexer/flex_lexer.cpp b/compiler/lexer/flex_lexer.cpp
index a9a8c9f..1668f0a 100644
--- a/compiler/lexer/flex_lexer.cpp
+++ b/compiler/lexer/flex_lexer.cpp
@@ -1,6 +1,6 @@
-#line 1 "./lexer/flex_lexer.cpp"
+#line 1 "/home/muqiu/Workspace/Swallow/compiler/lexer/flex_lexer.cpp"
 
-#line 3 "./lexer/flex_lexer.cpp"
+#line 3 "/home/muqiu/Workspace/Swallow/compiler/lexer/flex_lexer.cpp"
 
 #define YY_INT_ALIGNED short int
 
@@ -170,34 +170,33 @@ extern FILE *yyin, *yyout;
  *       a 5% performance hit in a non-yylineno scanner, because yy_act is
  *       normally declared as a register variable-- so it is not worth it.
  */
-#define YY_LESS_LINENO(n)                                                                \
-  do                                                                                     \
-    {                                                                                    \
-      int yyl;                                                                           \
-      for (yyl = n; yyl < yyleng; ++yyl)                                                 \
-        if (yytext[yyl] == '\n')                                                         \
-          --yylineno;                                                                    \
+#define YY_LESS_LINENO(n)                                                                                              \
+  do                                                                                                                   \
+    {                                                                                                                  \
+      int yyl;                                                                                                         \
+      for (yyl = n; yyl < yyleng; ++yyl)                                                                               \
+        if (yytext[yyl] == '\n')                                                                                       \
+          --yylineno;                                                                                                  \
   } while (0)
-#define YY_LINENO_REWIND_TO(dst)                                                         \
-  do                                                                                     \
-    {                                                                                    \
-      const char *p;                                                                     \
-      for (p = yy_cp - 1; p >= (dst); --p)                                               \
-        if (*p == '\n')                                                                  \
-          --yylineno;                                                                    \
+#define YY_LINENO_REWIND_TO(dst)                                                                                       \
+  do                                                                                                                   \
+    {                                                                                                                  \
+      const char *p;                                                                                                   \
+      for (p = yy_cp - 1; p >= (dst); --p)                                                                             \
+        if (*p == '\n')                                                                                                \
+          --yylineno;                                                                                                  \
   } while (0)
 
 /* Return all but the first "n" matched characters back to the input stream. */
-#define yyless(n)                                                                        \
-  do                                                                                     \
-    {                                                                                    \
-      /* Undo effects of setting up yytext. */                                           \
-      int yyless_macro_arg = (n);                                                        \
-      YY_LESS_LINENO(yyless_macro_arg);                                                  \
-      *yy_cp = (yy_hold_char);                                                           \
-      YY_RESTORE_YY_MORE_OFFSET(yy_c_buf_p) = yy_cp =                                    \
-        yy_bp + yyless_macro_arg - YY_MORE_ADJ;                                          \
-      YY_DO_BEFORE_ACTION; /* set up yytext again */                                     \
+#define yyless(n)                                                                                                      \
+  do                                                                                                                   \
+    {                                                                                                                  \
+      /* Undo effects of setting up yytext. */                                                                         \
+      int yyless_macro_arg = (n);                                                                                      \
+      YY_LESS_LINENO(yyless_macro_arg);                                                                                \
+      *yy_cp = (yy_hold_char);                                                                                         \
+      YY_RESTORE_YY_MORE_OFFSET(yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ;                          \
+      YY_DO_BEFORE_ACTION; /* set up yytext again */                                                                   \
   } while (0)
 #define unput(c) yyunput(c, (yytext_ptr))
 
@@ -277,8 +276,7 @@ static YY_BUFFER_STATE *yy_buffer_stack = NULL;  /**< Stack as an array. */
  *
  * Returns the top of the stack, or NULL.
  */
-#define YY_CURRENT_BUFFER                                                                \
-  ((yy_buffer_stack) ? (yy_buffer_stack)[(yy_buffer_stack_top)] : NULL)
+#define YY_CURRENT_BUFFER        ((yy_buffer_stack) ? (yy_buffer_stack)[(yy_buffer_stack_top)] : NULL)
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
@@ -321,23 +319,23 @@ void *yyrealloc(void *, yy_size_t);
 void  yyfree(void *);
 
 #define yy_new_buffer yy_create_buffer
-#define yy_set_interactive(is_interactive)                                               \
-  {                                                                                      \
-    if (!YY_CURRENT_BUFFER)                                                              \
-      {                                                                                  \
-        yyensure_buffer_stack();                                                         \
-        YY_CURRENT_BUFFER_LVALUE = yy_create_buffer(yyin, YY_BUF_SIZE);                  \
-      }                                                                                  \
-    YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive;                        \
+#define yy_set_interactive(is_interactive)                                                                             \
+  {                                                                                                                    \
+    if (!YY_CURRENT_BUFFER)                                                                                            \
+      {                                                                                                                \
+        yyensure_buffer_stack();                                                                                       \
+        YY_CURRENT_BUFFER_LVALUE = yy_create_buffer(yyin, YY_BUF_SIZE);                                                \
+      }                                                                                                                \
+    YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive;                                                      \
   }
-#define yy_set_bol(at_bol)                                                               \
-  {                                                                                      \
-    if (!YY_CURRENT_BUFFER)                                                              \
-      {                                                                                  \
-        yyensure_buffer_stack();                                                         \
-        YY_CURRENT_BUFFER_LVALUE = yy_create_buffer(yyin, YY_BUF_SIZE);                  \
-      }                                                                                  \
-    YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol;                                        \
+#define yy_set_bol(at_bol)                                                                                             \
+  {                                                                                                                    \
+    if (!YY_CURRENT_BUFFER)                                                                                            \
+      {                                                                                                                \
+        yyensure_buffer_stack();                                                                                       \
+        YY_CURRENT_BUFFER_LVALUE = yy_create_buffer(yyin, YY_BUF_SIZE);                                                \
+      }                                                                                                                \
+    YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol;                                                                      \
   }
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 
@@ -368,11 +366,11 @@ static void yynoreturn yy_fatal_error(const char *msg);
 /* Done after the current pattern has been matched and before the
  * corresponding action - sets up yytext.
  */
-#define YY_DO_BEFORE_ACTION                                                              \
-  (yytext_ptr) = yy_bp;                                                                  \
-  yyleng = (int) (yy_cp - yy_bp);                                                        \
-  (yy_hold_char) = *yy_cp;                                                               \
-  *yy_cp = '\0';                                                                         \
+#define YY_DO_BEFORE_ACTION                                                                                            \
+  (yytext_ptr) = yy_bp;                                                                                                \
+  yyleng = (int) (yy_cp - yy_bp);                                                                                      \
+  (yy_hold_char) = *yy_cp;                                                                                             \
+  *yy_cp = '\0';                                                                                                       \
   (yy_c_buf_p) = yy_cp;
 #define YY_NUM_RULES     25
 #define YY_END_OF_BUFFER 26
@@ -385,52 +383,44 @@ struct yy_trans_info
   flex_int32_t yy_nxt;
 };
 
-static const flex_int16_t yy_accept[46] = {0,  0,  0,  26, 25, 1,  13, 14, 3,  2,  17, 4,
-                                           5,  6,  18, 22, 24, 15, 16, 23, 23, 23, 23, 23,
-                                           11, 20, 12, 1,  19, 6,  21, 24, 23, 23, 23, 23,
-                                           23, 23, 7,  23, 23, 8,  23, 10, 9,  0};
+static const flex_int16_t yy_accept[46] = {0,  0,  0,  26, 25, 1,  13, 14, 3,  2,  17, 4,  5,  6, 18, 22,
+                                           24, 15, 16, 23, 23, 23, 23, 23, 11, 20, 12, 1,  19, 6, 21, 24,
+                                           23, 23, 23, 23, 23, 23, 7,  23, 23, 8,  23, 10, 9,  0};
 
 static const YY_CHAR yy_ec[256] = {
-  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1,  3,  4,
-  5,  6,  7,  8,  1,  9,  10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1,  11, 1,  12, 13,
-  1,  1,  14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1,  3,  4,  5,  6,  7,  8,  1,  9,  10, 10, 10, 10, 10, 10, 10, 10,
+  10, 10, 1,  11, 1,  12, 13, 1,  1,  14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
   14, 14, 14, 14, 14, 14, 14, 15, 1,  16, 1,  1,  1,  17, 18, 19, 20,
 
-  21, 18, 18, 22, 23, 18, 18, 24, 25, 18, 18, 18, 18, 18, 18, 26, 18, 18, 27, 18, 18,
-  18, 28, 29, 30, 1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+  21, 18, 18, 22, 23, 18, 18, 24, 25, 18, 18, 18, 18, 18, 18, 26, 18, 18, 27, 18, 18, 18, 28, 29, 30, 1,  1,  1,
+  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
   1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
 
-  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1};
+  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1};
 
 static const YY_CHAR yy_meta[31] = {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1,
                                     1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1};
 
-static const flex_int16_t yy_base[48] = {0,  0,  0,  51, 52, 48, 52, 52, 52, 52, 52, 36,
-                                         52, 38, 52, 34, 0,  52, 52, 0,  29, 24, 27, 20,
-                                         52, 52, 52, 40, 52, 31, 52, 0,  0,  14, 13, 12,
-                                         11, 19, 0,  16, 12, 0,  11, 0,  0,  52, 30, 29};
+static const flex_int16_t yy_base[48] = {0, 0,  0,  51, 52, 48, 52, 52, 52, 52, 52, 36, 52, 38, 52, 34,
+                                         0, 52, 52, 0,  29, 24, 27, 20, 52, 52, 52, 40, 52, 31, 52, 0,
+                                         0, 14, 13, 12, 11, 19, 0,  16, 12, 0,  11, 0,  0,  52, 30, 29};
 
-static const flex_int16_t yy_def[48] = {0,  45, 1,  45, 45, 45, 45, 45, 45, 45, 45, 45,
-                                        45, 45, 45, 45, 46, 45, 45, 47, 47, 47, 47, 47,
-                                        45, 45, 45, 45, 45, 45, 45, 46, 47, 47, 47, 47,
-                                        47, 47, 47, 47, 47, 47, 47, 47, 47, 0,  45, 45};
+static const flex_int16_t yy_def[48] = {0,  45, 1,  45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+                                        46, 45, 45, 47, 47, 47, 47, 47, 45, 45, 45, 45, 45, 45, 45, 46,
+                                        47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 0,  45, 45};
 
 static const flex_int16_t yy_nxt[83] = {
-  0,  4,  5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15, 4,  16, 17, 18, 19, 19, 19, 20,
-  19, 19, 19, 21, 22, 19, 23, 24, 25, 26, 32, 31, 44, 43, 42, 41, 40, 39, 38, 37, 29,
-  27, 36, 35, 34, 33, 30, 29, 28, 27, 45, 3,  45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
-  45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45};
+  0,  4,  5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15, 4,  16, 17, 18, 19, 19, 19, 20, 19, 19, 19, 21, 22, 19, 23,
+  24, 25, 26, 32, 31, 44, 43, 42, 41, 40, 39, 38, 37, 29, 27, 36, 35, 34, 33, 30, 29, 28, 27, 45, 3,  45, 45, 45,
+  45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45};
 
 static const flex_int16_t yy_chk[83] = {
-  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  47, 46, 42, 40, 39, 37, 36, 35, 34, 33, 29,
-  27, 23, 22, 21, 20, 15, 13, 11, 5,  3,  45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
-  45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45};
+  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+  1,  1,  1,  47, 46, 42, 40, 39, 37, 36, 35, 34, 33, 29, 27, 23, 22, 21, 20, 15, 13, 11, 5,  3,  45, 45, 45, 45,
+  45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45};
 
 /* Table of booleans, true if rule could match eol. */
 static const flex_int32_t yy_rule_can_match_eol[26] = {
@@ -451,22 +441,22 @@ int        yy_flex_debug = 0;
 #define YY_MORE_ADJ 0
 #define YY_RESTORE_YY_MORE_OFFSET
 char *yytext;
-#line 1 "./lexer/lexer.l"
-#line 4 "./lexer/lexer.l"
+#line 1 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
+#line 4 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
 
 #include "ast/ast.hpp"
-#include "bison_parser.hpp"
+#include "parser/bison_parser.hpp"
 
 #define YY_DECL yy::parser::symbol_type yylex()
 
 static yy::location LOC;
 
-#define YY_USER_ACTION                                                                   \
-  LOC.step();                                                                            \
+#define YY_USER_ACTION                                                                                                 \
+  LOC.step();                                                                                                          \
   LOC.columns(yyleng);
 
-#line 510 "./lexer/flex_lexer.cpp"
-#line 511 "./lexer/flex_lexer.cpp"
+#line 510 "/home/muqiu/Workspace/Swallow/compiler/lexer/flex_lexer.cpp"
+#line 511 "/home/muqiu/Workspace/Swallow/compiler/lexer/flex_lexer.cpp"
 
 #define INITIAL 0
 
@@ -563,12 +553,12 @@ static int input(void);
 /* This used to be an fputs(), but since the string might contain NUL's,
  * we now use fwrite().
  */
-#define ECHO                                                                             \
-  do                                                                                     \
-    {                                                                                    \
-      if (fwrite(yytext, (size_t) yyleng, 1, yyout))                                     \
-        {                                                                                \
-        }                                                                                \
+#define ECHO                                                                                                           \
+  do                                                                                                                   \
+    {                                                                                                                  \
+      if (fwrite(yytext, (size_t) yyleng, 1, yyout))                                                                   \
+        {                                                                                                              \
+        }                                                                                                              \
   } while (0)
 #endif
 
@@ -576,33 +566,32 @@ static int input(void);
  * is returned in "result".
  */
 #ifndef YY_INPUT
-#define YY_INPUT(buf, result, max_size)                                                  \
-  if (YY_CURRENT_BUFFER_LVALUE->yy_is_interactive)                                       \
-    {                                                                                    \
-      int c = '*';                                                                       \
-      int n;                                                                             \
-      for (n = 0; n < max_size && (c = getc(yyin)) != EOF && c != '\n'; ++n)             \
-        buf[n] = (char) c;                                                               \
-      if (c == '\n')                                                                     \
-        buf[n++] = (char) c;                                                             \
-      if (c == EOF && ferror(yyin))                                                      \
-        YY_FATAL_ERROR("input in flex scanner failed");                                  \
-      result = n;                                                                        \
-    }                                                                                    \
-  else                                                                                   \
-    {                                                                                    \
-      errno = 0;                                                                         \
-      while ((result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0             \
-             && ferror(yyin))                                                            \
-        {                                                                                \
-          if (errno != EINTR)                                                            \
-            {                                                                            \
-              YY_FATAL_ERROR("input in flex scanner failed");                            \
-              break;                                                                     \
-            }                                                                            \
-          errno = 0;                                                                     \
-          clearerr(yyin);                                                                \
-        }                                                                                \
+#define YY_INPUT(buf, result, max_size)                                                                                \
+  if (YY_CURRENT_BUFFER_LVALUE->yy_is_interactive)                                                                     \
+    {                                                                                                                  \
+      int c = '*';                                                                                                     \
+      int n;                                                                                                           \
+      for (n = 0; n < max_size && (c = getc(yyin)) != EOF && c != '\n'; ++n)                                           \
+        buf[n] = (char) c;                                                                                             \
+      if (c == '\n')                                                                                                   \
+        buf[n++] = (char) c;                                                                                           \
+      if (c == EOF && ferror(yyin))                                                                                    \
+        YY_FATAL_ERROR("input in flex scanner failed");                                                                \
+      result = n;                                                                                                      \
+    }                                                                                                                  \
+  else                                                                                                                 \
+    {                                                                                                                  \
+      errno = 0;                                                                                                       \
+      while ((result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin))                          \
+        {                                                                                                              \
+          if (errno != EINTR)                                                                                          \
+            {                                                                                                          \
+              YY_FATAL_ERROR("input in flex scanner failed");                                                          \
+              break;                                                                                                   \
+            }                                                                                                          \
+          errno = 0;                                                                                                   \
+          clearerr(yyin);                                                                                              \
+        }                                                                                                              \
     }
 
 #endif
@@ -687,9 +676,9 @@ YY_DECL
     }
 
   {
-#line 18 "./lexer/lexer.l"
+#line 18 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
 
-#line 731 "./lexer/flex_lexer.cpp"
+#line 731 "/home/muqiu/Workspace/Swallow/compiler/lexer/flex_lexer.cpp"
 
     while (/*CONSTCOND*/ 1) /* loops until end-of-file is reached */
       {
@@ -758,182 +747,182 @@ YY_DECL
           case 1:
             /* rule 1 can match eol */
             YY_RULE_SETUP
-#line 20 "./lexer/lexer.l"
+#line 20 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {}
             YY_BREAK
           case 2:
             YY_RULE_SETUP
-#line 21 "./lexer/lexer.l"
+#line 21 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_PLUS(LOC);
             }
             YY_BREAK
           case 3:
             YY_RULE_SETUP
-#line 22 "./lexer/lexer.l"
+#line 22 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_TIMES(LOC);
             }
             YY_BREAK
           case 4:
             YY_RULE_SETUP
-#line 23 "./lexer/lexer.l"
+#line 23 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_MINUS(LOC);
             }
             YY_BREAK
           case 5:
             YY_RULE_SETUP
-#line 24 "./lexer/lexer.l"
+#line 24 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_DIVIDE(LOC);
             }
             YY_BREAK
           case 6:
             YY_RULE_SETUP
-#line 25 "./lexer/lexer.l"
+#line 25 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_INT(atoi(yytext), LOC);
             }
             YY_BREAK
           case 7:
             YY_RULE_SETUP
-#line 26 "./lexer/lexer.l"
+#line 26 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_FN(LOC);
             }
             YY_BREAK
           case 8:
             YY_RULE_SETUP
-#line 27 "./lexer/lexer.l"
+#line 27 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_DATA(LOC);
             }
             YY_BREAK
           case 9:
             YY_RULE_SETUP
-#line 28 "./lexer/lexer.l"
+#line 28 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_MATCH(LOC);
             }
             YY_BREAK
           case 10:
             YY_RULE_SETUP
-#line 29 "./lexer/lexer.l"
+#line 29 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_WITH(LOC);
             }
             YY_BREAK
           case 11:
             YY_RULE_SETUP
-#line 30 "./lexer/lexer.l"
+#line 30 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_OCURLY(LOC);
             }
             YY_BREAK
           case 12:
             YY_RULE_SETUP
-#line 31 "./lexer/lexer.l"
+#line 31 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_CCURLY(LOC);
             }
             YY_BREAK
           case 13:
             YY_RULE_SETUP
-#line 32 "./lexer/lexer.l"
+#line 32 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_OPAREN(LOC);
             }
             YY_BREAK
           case 14:
             YY_RULE_SETUP
-#line 33 "./lexer/lexer.l"
+#line 33 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_CPAREN(LOC);
             }
             YY_BREAK
           case 15:
             YY_RULE_SETUP
-#line 34 "./lexer/lexer.l"
+#line 34 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_OBRACKET(LOC);
             }
             YY_BREAK
           case 16:
             YY_RULE_SETUP
-#line 35 "./lexer/lexer.l"
+#line 35 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_CBRACKET(LOC);
             }
             YY_BREAK
           case 17:
             YY_RULE_SETUP
-#line 36 "./lexer/lexer.l"
+#line 36 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_COMMA(LOC);
             }
             YY_BREAK
           case 18:
             YY_RULE_SETUP
-#line 37 "./lexer/lexer.l"
+#line 37 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_SEMICOLON(LOC);
             }
             YY_BREAK
           case 19:
             YY_RULE_SETUP
-#line 38 "./lexer/lexer.l"
+#line 38 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_ARROW(LOC);
             }
             YY_BREAK
           case 20:
             YY_RULE_SETUP
-#line 39 "./lexer/lexer.l"
+#line 39 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_VERTIAL(LOC);
             }
             YY_BREAK
           case 21:
             YY_RULE_SETUP
-#line 40 "./lexer/lexer.l"
+#line 40 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_DOUBLEARROW(LOC);
             }
             YY_BREAK
           case 22:
             YY_RULE_SETUP
-#line 41 "./lexer/lexer.l"
+#line 41 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_EQUAL(LOC);
             }
             YY_BREAK
           case 23:
             YY_RULE_SETUP
-#line 43 "./lexer/lexer.l"
+#line 43 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_LID(std::string(yytext), LOC);
             }
             YY_BREAK
           case 24:
             YY_RULE_SETUP
-#line 44 "./lexer/lexer.l"
+#line 44 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_UID(std::string(yytext), LOC);
             }
             YY_BREAK
             case YY_STATE_EOF(INITIAL):
-#line 46 "./lexer/lexer.l"
+#line 46 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             {
               return yy::parser::make_END(LOC);
             }
             YY_BREAK
           case 25:
             YY_RULE_SETUP
-#line 48 "./lexer/lexer.l"
+#line 48 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
             ECHO;
             YY_BREAK
-#line 928 "./lexer/flex_lexer.cpp"
+#line 928 "/home/muqiu/Workspace/Swallow/compiler/lexer/flex_lexer.cpp"
 
             case YY_END_OF_BUFFER: {
               /* Amount of text matched not including the EOB char. */
@@ -1152,8 +1141,7 @@ static int yy_get_next_buffer(void)
         num_to_read = YY_READ_BUF_SIZE;
 
       /* Read in more data. */
-      YY_INPUT(
-        (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), (yy_n_chars), num_to_read);
+      YY_INPUT((&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), (yy_n_chars), num_to_read);
 
       YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
     }
@@ -1180,8 +1168,8 @@ static int yy_get_next_buffer(void)
     {
       /* Extend the array by 50%, plus the number we really need. */
       int new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
-      YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
-        (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size);
+      YY_CURRENT_BUFFER_LVALUE->yy_ch_buf =
+        (char *) yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size);
       if (!YY_CURRENT_BUFFER_LVALUE->yy_ch_buf)
         YY_FATAL_ERROR("out of dynamic memory in yy_get_next_buffer()");
       /* "- 2" to take care of EOB's */
@@ -1269,8 +1257,7 @@ static void yyunput(int c, char *yy_bp)
     { /* need to shift things up to make room */
       /* +2 for EOB chars. */
       int   number_to_move = (yy_n_chars) + 2;
-      char *dest =
-        &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
+      char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
       char *source = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move];
 
       while (source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf)
@@ -1278,8 +1265,7 @@ static void yyunput(int c, char *yy_bp)
 
       yy_cp += (int) (dest - source);
       yy_bp += (int) (dest - source);
-      YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) =
-        (int) YY_CURRENT_BUFFER_LVALUE->yy_buf_size;
+      YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = (int) YY_CURRENT_BUFFER_LVALUE->yy_buf_size;
 
       if (yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2)
         YY_FATAL_ERROR("flex scanner push-back overflow");
@@ -1609,8 +1595,7 @@ static void yyensure_buffer_stack(void)
        * immediate realloc on the next call.
        */
       num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
-      (yy_buffer_stack) = (struct yy_buffer_state **) yyalloc(
-        num_to_alloc * sizeof(struct yy_buffer_state *));
+      (yy_buffer_stack) = (struct yy_buffer_state **) yyalloc(num_to_alloc * sizeof(struct yy_buffer_state *));
       if (!(yy_buffer_stack))
         YY_FATAL_ERROR("out of dynamic memory in yyensure_buffer_stack()");
 
@@ -1628,16 +1613,13 @@ static void yyensure_buffer_stack(void)
       yy_size_t grow_size = 8 /* arbitrary grow size */;
 
       num_to_alloc = (yy_buffer_stack_max) + grow_size;
-      (yy_buffer_stack) = (struct yy_buffer_state **) yyrealloc(
-        (yy_buffer_stack), num_to_alloc * sizeof(struct yy_buffer_state *));
+      (yy_buffer_stack) =
+        (struct yy_buffer_state **) yyrealloc((yy_buffer_stack), num_to_alloc * sizeof(struct yy_buffer_state *));
       if (!(yy_buffer_stack))
         YY_FATAL_ERROR("out of dynamic memory in yyensure_buffer_stack()");
 
       /* zero only the new slots.*/
-      memset(
-        (yy_buffer_stack) + (yy_buffer_stack_max),
-        0,
-        grow_size * sizeof(struct yy_buffer_state *));
+      memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state *));
       (yy_buffer_stack_max) = num_to_alloc;
     }
 }
@@ -1652,9 +1634,7 @@ YY_BUFFER_STATE yy_scan_buffer(char *base, yy_size_t size)
 {
   YY_BUFFER_STATE b;
 
-  if (
-    size < 2 || base[size - 2] != YY_END_OF_BUFFER_CHAR
-    || base[size - 1] != YY_END_OF_BUFFER_CHAR)
+  if (size < 2 || base[size - 2] != YY_END_OF_BUFFER_CHAR || base[size - 1] != YY_END_OF_BUFFER_CHAR)
     /* They forgot to leave room for the EOB's. */
     return NULL;
 
@@ -1685,11 +1665,7 @@ YY_BUFFER_STATE yy_scan_buffer(char *base, yy_size_t size)
  * @note If you want to scan bytes that may contain NUL values, then use
  *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE yy_scan_string(const char *yystr)
-{
-
-  return yy_scan_bytes(yystr, (int) strlen(yystr));
-}
+YY_BUFFER_STATE yy_scan_string(const char *yystr) { return yy_scan_bytes(yystr, (int) strlen(yystr)); }
 
 /** Setup the input buffer state to scan the given bytes. The next call to yylex() will
  * scan from a @e copy of @a bytes.
@@ -1741,17 +1717,17 @@ static void yynoreturn yy_fatal_error(const char *msg)
 /* Redefine yyless() so it works in section 3 code. */
 
 #undef yyless
-#define yyless(n)                                                                        \
-  do                                                                                     \
-    {                                                                                    \
-      /* Undo effects of setting up yytext. */                                           \
-      int yyless_macro_arg = (n);                                                        \
-      YY_LESS_LINENO(yyless_macro_arg);                                                  \
-      yytext[yyleng] = (yy_hold_char);                                                   \
-      (yy_c_buf_p) = yytext + yyless_macro_arg;                                          \
-      (yy_hold_char) = *(yy_c_buf_p);                                                    \
-      *(yy_c_buf_p) = '\0';                                                              \
-      yyleng = yyless_macro_arg;                                                         \
+#define yyless(n)                                                                                                      \
+  do                                                                                                                   \
+    {                                                                                                                  \
+      /* Undo effects of setting up yytext. */                                                                         \
+      int yyless_macro_arg = (n);                                                                                      \
+      YY_LESS_LINENO(yyless_macro_arg);                                                                                \
+      yytext[yyleng] = (yy_hold_char);                                                                                 \
+      (yy_c_buf_p) = yytext + yyless_macro_arg;                                                                        \
+      (yy_hold_char) = *(yy_c_buf_p);                                                                                  \
+      *(yy_c_buf_p) = '\0';                                                                                            \
+      yyleng = yyless_macro_arg;                                                                                       \
   } while (0)
 
 /* Accessor  methods (get/set functions) to struct members. */
@@ -1900,4 +1876,4 @@ void yyfree(void *ptr) { free((char *) ptr); /* see yyrealloc() for (char *) cas
 
 #define YYTABLES_NAME "yytables"
 
-#line 48 "./lexer/lexer.l"
+#line 48 "/home/muqiu/Workspace/Swallow/compiler/lexer/lexer.l"
diff --git a/compiler/lexer/lexer.l b/compiler/lexer/lexer.l
index 85293e9..90f9db9 100644
--- a/compiler/lexer/lexer.l
+++ b/compiler/lexer/lexer.l
@@ -3,7 +3,7 @@
 %{
 
 #include "ast/ast.hpp"
-#include "bison_parser.hpp"
+#include "parser/bison_parser.hpp"
 
 #define YY_DECL yy::parser::symbol_type yylex()
 
diff --git a/compiler/parser/bison_parser.cpp b/compiler/parser/bison_parser.cpp
index 8b61eb4..417d3f3 100644
--- a/compiler/parser/bison_parser.cpp
+++ b/compiler/parser/bison_parser.cpp
@@ -34,41 +34,48 @@
 // especially those whose name start with YY_ or yy_.  They are
 // private implementation details that can be changed or removed.
 
+
+
 // First part of user prologue.
-#line 7 "./parser/parser.y"
+#line 1 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
 
 #include <string>
 #include <iostream>
 #include "bison_parser.hpp"
 #include "diagnostics/reporter.hpp"
-#include "binop/binop.hpp"
+#include "utils/binop.hpp"
 
-std::vector<Definition::Ptr>   Program;
+std::vector<Definition::Ptr> Program;
 extern yy::parser::symbol_type yylex();
 
-#line 53 "./parser/bison_parser.cpp"
+#line 52 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+
 
 #include "bison_parser.hpp"
 
+
+
+
 #ifndef YY_
-#if defined YYENABLE_NLS && YYENABLE_NLS
-#if ENABLE_NLS
-#include <libintl.h> // FIXME: INFRINGES ON USER NAME SPACE.
-#define YY_(msgid) dgettext("bison-runtime", msgid)
-#endif
-#endif
-#ifndef YY_
-#define YY_(msgid) msgid
-#endif
+# if defined YYENABLE_NLS && YYENABLE_NLS
+#  if ENABLE_NLS
+#   include <libintl.h> // FIXME: INFRINGES ON USER NAME SPACE.
+#   define YY_(msgid) dgettext ("bison-runtime", msgid)
+#  endif
+# endif
+# ifndef YY_
+#  define YY_(msgid) msgid
+# endif
 #endif
 
+
 // Whether we are compiled with exception support.
 #ifndef YY_EXCEPTIONS
-#if defined __GNUC__ && !defined __EXCEPTIONS
-#define YY_EXCEPTIONS 0
-#else
-#define YY_EXCEPTIONS 1
-#endif
+# if defined __GNUC__ && !defined __EXCEPTIONS
+#  define YY_EXCEPTIONS 0
+# else
+#  define YY_EXCEPTIONS 1
+# endif
 #endif
 
 #define YYRHSLOC(Rhs, K) ((Rhs)[K].location)
@@ -76,180 +83,191 @@ extern yy::parser::symbol_type yylex();
    If N is 0, then set CURRENT to the empty location which ends
    the previous symbol: RHS[0] (always defined).  */
 
-#ifndef YYLLOC_DEFAULT
-#define YYLLOC_DEFAULT(Current, Rhs, N)                                                  \
-  do                                                                                     \
-    if (N)                                                                               \
-      {                                                                                  \
-        (Current).begin = YYRHSLOC(Rhs, 1).begin;                                        \
-        (Current).end = YYRHSLOC(Rhs, N).end;                                            \
-      }                                                                                  \
-    else                                                                                 \
-      {                                                                                  \
-        (Current).begin = (Current).end = YYRHSLOC(Rhs, 0).end;                          \
-      }                                                                                  \
-  while (false)
-#endif
+# ifndef YYLLOC_DEFAULT
+#  define YYLLOC_DEFAULT(Current, Rhs, N)                               \
+    do                                                                  \
+      if (N)                                                            \
+        {                                                               \
+          (Current).begin  = YYRHSLOC (Rhs, 1).begin;                   \
+          (Current).end    = YYRHSLOC (Rhs, N).end;                     \
+        }                                                               \
+      else                                                              \
+        {                                                               \
+          (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end;      \
+        }                                                               \
+    while (false)
+# endif
+
 
 // Enable debugging if requested.
 #if YYDEBUG
 
 // A pseudo ostream that takes yydebug_ into account.
-#define YYCDEBUG                                                                         \
-  if (yydebug_)                                                                          \
-  (*yycdebug_)
-
-#define YY_SYMBOL_PRINT(Title, Symbol)                                                   \
-  do                                                                                     \
-    {                                                                                    \
-      if (yydebug_)                                                                      \
-        {                                                                                \
-          *yycdebug_ << Title << ' ';                                                    \
-          yy_print_(*yycdebug_, Symbol);                                                 \
-          *yycdebug_ << '\n';                                                            \
-        }                                                                                \
+# define YYCDEBUG if (yydebug_) (*yycdebug_)
+
+# define YY_SYMBOL_PRINT(Title, Symbol)         \
+  do {                                          \
+    if (yydebug_)                               \
+    {                                           \
+      *yycdebug_ << Title << ' ';               \
+      yy_print_ (*yycdebug_, Symbol);           \
+      *yycdebug_ << '\n';                       \
+    }                                           \
   } while (false)
 
-#define YY_REDUCE_PRINT(Rule)                                                            \
-  do                                                                                     \
-    {                                                                                    \
-      if (yydebug_)                                                                      \
-        yy_reduce_print_(Rule);                                                          \
+# define YY_REDUCE_PRINT(Rule)          \
+  do {                                  \
+    if (yydebug_)                       \
+      yy_reduce_print_ (Rule);          \
   } while (false)
 
-#define YY_STACK_PRINT()                                                                 \
-  do                                                                                     \
-    {                                                                                    \
-      if (yydebug_)                                                                      \
-        yy_stack_print_();                                                               \
+# define YY_STACK_PRINT()               \
+  do {                                  \
+    if (yydebug_)                       \
+      yy_stack_print_ ();                \
   } while (false)
 
 #else // !YYDEBUG
 
-#define YYCDEBUG                                                                         \
-  if (false)                                                                             \
-  std::cerr
-#define YY_SYMBOL_PRINT(Title, Symbol) YY_USE(Symbol)
-#define YY_REDUCE_PRINT(Rule)          static_cast<void>(0)
-#define YY_STACK_PRINT()               static_cast<void>(0)
+# define YYCDEBUG if (false) std::cerr
+# define YY_SYMBOL_PRINT(Title, Symbol)  YY_USE (Symbol)
+# define YY_REDUCE_PRINT(Rule)           static_cast<void> (0)
+# define YY_STACK_PRINT()                static_cast<void> (0)
 
 #endif // !YYDEBUG
 
-#define yyerrok        (yyerrstatus_ = 0)
-#define yyclearin      (yyla.clear())
+#define yyerrok         (yyerrstatus_ = 0)
+#define yyclearin       (yyla.clear ())
 
-#define YYACCEPT       goto yyacceptlab
-#define YYABORT        goto yyabortlab
-#define YYERROR        goto yyerrorlab
-#define YYRECOVERING() (!!yyerrstatus_)
+#define YYACCEPT        goto yyacceptlab
+#define YYABORT         goto yyabortlab
+#define YYERROR         goto yyerrorlab
+#define YYRECOVERING()  (!!yyerrstatus_)
 
-namespace yy
-{
-#line 150 "./parser/bison_parser.cpp"
+namespace yy {
+#line 149 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
 
   /// Build a parser object.
-  parser::parser()
+  parser::parser ()
 #if YYDEBUG
-    : yydebug_(false), yycdebug_(&std::cerr)
+    : yydebug_ (false),
+      yycdebug_ (&std::cerr)
 #else
 
 #endif
   {}
 
-  parser::~parser() {}
+  parser::~parser ()
+  {}
 
-  parser::syntax_error::~syntax_error() YY_NOEXCEPT YY_NOTHROW {}
+  parser::syntax_error::~syntax_error () YY_NOEXCEPT YY_NOTHROW
+  {}
 
   /*---------.
   | symbol.  |
   `---------*/
 
+
+
   // by_state.
-  parser::by_state::by_state() YY_NOEXCEPT : state(empty_state) {}
+  parser::by_state::by_state () YY_NOEXCEPT
+    : state (empty_state)
+  {}
 
-  parser::by_state::by_state(const by_state& that) YY_NOEXCEPT : state(that.state) {}
+  parser::by_state::by_state (const by_state& that) YY_NOEXCEPT
+    : state (that.state)
+  {}
 
-  void parser::by_state::clear() YY_NOEXCEPT { state = empty_state; }
+  void
+  parser::by_state::clear () YY_NOEXCEPT
+  {
+    state = empty_state;
+  }
 
-  void parser::by_state::move(by_state& that)
+  void
+  parser::by_state::move (by_state& that)
   {
     state = that.state;
-    that.clear();
+    that.clear ();
   }
 
-  parser::by_state::by_state(state_type s) YY_NOEXCEPT : state(s) {}
+  parser::by_state::by_state (state_type s) YY_NOEXCEPT
+    : state (s)
+  {}
 
-  parser::symbol_kind_type parser::by_state::kind() const YY_NOEXCEPT
+  parser::symbol_kind_type
+  parser::by_state::kind () const YY_NOEXCEPT
   {
     if (state == empty_state)
       return symbol_kind::S_YYEMPTY;
     else
-      return YY_CAST(symbol_kind_type, yystos_[+state]);
+      return YY_CAST (symbol_kind_type, yystos_[+state]);
   }
 
-  parser::stack_symbol_type::stack_symbol_type() {}
+  parser::stack_symbol_type::stack_symbol_type ()
+  {}
 
-  parser::stack_symbol_type::stack_symbol_type(YY_RVREF(stack_symbol_type) that)
-    : super_type(YY_MOVE(that.state), YY_MOVE(that.location))
+  parser::stack_symbol_type::stack_symbol_type (YY_RVREF (stack_symbol_type) that)
+    : super_type (YY_MOVE (that.state), YY_MOVE (that.location))
   {
-    switch (that.kind())
-      {
-      case symbol_kind::S_Add:             // Add
-      case symbol_kind::S_Mul:             // Mul
-      case symbol_kind::S_Application:     // Application
+    switch (that.kind ())
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
       case symbol_kind::S_ApplicationBase: // ApplicationBase
-      case symbol_kind::S_Match:           // Match
-        value.YY_MOVE_OR_COPY<AST::Ptr>(YY_MOVE(that.value));
+      case symbol_kind::S_Match: // Match
+        value.YY_MOVE_OR_COPY< AST::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Branch: // Branch
-        value.YY_MOVE_OR_COPY<Branch::Ptr>(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< Branch::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Constructor: // Constructor
-        value.YY_MOVE_OR_COPY<Constructor::Ptr>(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< Constructor::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Definition: // Definition
-      case symbol_kind::S_Fn:         // Fn
-      case symbol_kind::S_Data:       // Data
-        value.YY_MOVE_OR_COPY<Definition::Ptr>(YY_MOVE(that.value));
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.YY_MOVE_OR_COPY< Definition::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Pattern: // Pattern
-        value.YY_MOVE_OR_COPY<Pattern::Ptr>(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< Pattern::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_INT: // INT
-        value.YY_MOVE_OR_COPY<int>(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< int > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_LID: // LID
       case symbol_kind::S_UID: // UID
-        value.YY_MOVE_OR_COPY<std::string>(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< std::string > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Branches: // Branches
-        value.YY_MOVE_OR_COPY<std::vector<Branch::Ptr> >(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< std::vector<Branch::Ptr> > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Constructors: // Constructors
-        value.YY_MOVE_OR_COPY<std::vector<Constructor::Ptr> >(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< std::vector<Constructor::Ptr> > (YY_MOVE (that.value));
         break;
 
-      case symbol_kind::S_Program:     // Program
+      case symbol_kind::S_Program: // Program
       case symbol_kind::S_Definitions: // Definitions
-        value.YY_MOVE_OR_COPY<std::vector<Definition::Ptr> >(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< std::vector<Definition::Ptr> > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_LowercaseParams: // LowercaseParams
       case symbol_kind::S_UppercaseParams: // UppercaseParams
-        value.YY_MOVE_OR_COPY<std::vector<std::string> >(YY_MOVE(that.value));
+        value.YY_MOVE_OR_COPY< std::vector<std::string> > (YY_MOVE (that.value));
         break;
 
       default:
         break;
-      }
+    }
 
 #if 201103L <= YY_CPLUSPLUS
     // that is emptied.
@@ -257,67 +275,67 @@ namespace yy
 #endif
   }
 
-  parser::stack_symbol_type::stack_symbol_type(state_type s, YY_MOVE_REF(symbol_type) that)
-    : super_type(s, YY_MOVE(that.location))
+  parser::stack_symbol_type::stack_symbol_type (state_type s, YY_MOVE_REF (symbol_type) that)
+    : super_type (s, YY_MOVE (that.location))
   {
-    switch (that.kind())
-      {
-      case symbol_kind::S_Add:             // Add
-      case symbol_kind::S_Mul:             // Mul
-      case symbol_kind::S_Application:     // Application
+    switch (that.kind ())
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
       case symbol_kind::S_ApplicationBase: // ApplicationBase
-      case symbol_kind::S_Match:           // Match
-        value.move<AST::Ptr>(YY_MOVE(that.value));
+      case symbol_kind::S_Match: // Match
+        value.move< AST::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Branch: // Branch
-        value.move<Branch::Ptr>(YY_MOVE(that.value));
+        value.move< Branch::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Constructor: // Constructor
-        value.move<Constructor::Ptr>(YY_MOVE(that.value));
+        value.move< Constructor::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Definition: // Definition
-      case symbol_kind::S_Fn:         // Fn
-      case symbol_kind::S_Data:       // Data
-        value.move<Definition::Ptr>(YY_MOVE(that.value));
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.move< Definition::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Pattern: // Pattern
-        value.move<Pattern::Ptr>(YY_MOVE(that.value));
+        value.move< Pattern::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_INT: // INT
-        value.move<int>(YY_MOVE(that.value));
+        value.move< int > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_LID: // LID
       case symbol_kind::S_UID: // UID
-        value.move<std::string>(YY_MOVE(that.value));
+        value.move< std::string > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Branches: // Branches
-        value.move<std::vector<Branch::Ptr> >(YY_MOVE(that.value));
+        value.move< std::vector<Branch::Ptr> > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Constructors: // Constructors
-        value.move<std::vector<Constructor::Ptr> >(YY_MOVE(that.value));
+        value.move< std::vector<Constructor::Ptr> > (YY_MOVE (that.value));
         break;
 
-      case symbol_kind::S_Program:     // Program
+      case symbol_kind::S_Program: // Program
       case symbol_kind::S_Definitions: // Definitions
-        value.move<std::vector<Definition::Ptr> >(YY_MOVE(that.value));
+        value.move< std::vector<Definition::Ptr> > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_LowercaseParams: // LowercaseParams
       case symbol_kind::S_UppercaseParams: // UppercaseParams
-        value.move<std::vector<std::string> >(YY_MOVE(that.value));
+        value.move< std::vector<std::string> > (YY_MOVE (that.value));
         break;
 
       default:
         break;
-      }
+    }
 
     // that is emptied.
     that.kind_ = symbol_kind::S_YYEMPTY;
@@ -325,133 +343,134 @@ namespace yy
 
 #if YY_CPLUSPLUS < 201103L
   parser::stack_symbol_type&
-    parser::stack_symbol_type::operator=(const stack_symbol_type& that)
+  parser::stack_symbol_type::operator= (const stack_symbol_type& that)
   {
     state = that.state;
-    switch (that.kind())
-      {
-      case symbol_kind::S_Add:             // Add
-      case symbol_kind::S_Mul:             // Mul
-      case symbol_kind::S_Application:     // Application
+    switch (that.kind ())
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
       case symbol_kind::S_ApplicationBase: // ApplicationBase
-      case symbol_kind::S_Match:           // Match
-        value.copy<AST::Ptr>(that.value);
+      case symbol_kind::S_Match: // Match
+        value.copy< AST::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Branch: // Branch
-        value.copy<Branch::Ptr>(that.value);
+        value.copy< Branch::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Constructor: // Constructor
-        value.copy<Constructor::Ptr>(that.value);
+        value.copy< Constructor::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Definition: // Definition
-      case symbol_kind::S_Fn:         // Fn
-      case symbol_kind::S_Data:       // Data
-        value.copy<Definition::Ptr>(that.value);
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.copy< Definition::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Pattern: // Pattern
-        value.copy<Pattern::Ptr>(that.value);
+        value.copy< Pattern::Ptr > (that.value);
         break;
 
       case symbol_kind::S_INT: // INT
-        value.copy<int>(that.value);
+        value.copy< int > (that.value);
         break;
 
       case symbol_kind::S_LID: // LID
       case symbol_kind::S_UID: // UID
-        value.copy<std::string>(that.value);
+        value.copy< std::string > (that.value);
         break;
 
       case symbol_kind::S_Branches: // Branches
-        value.copy<std::vector<Branch::Ptr> >(that.value);
+        value.copy< std::vector<Branch::Ptr> > (that.value);
         break;
 
       case symbol_kind::S_Constructors: // Constructors
-        value.copy<std::vector<Constructor::Ptr> >(that.value);
+        value.copy< std::vector<Constructor::Ptr> > (that.value);
         break;
 
-      case symbol_kind::S_Program:     // Program
+      case symbol_kind::S_Program: // Program
       case symbol_kind::S_Definitions: // Definitions
-        value.copy<std::vector<Definition::Ptr> >(that.value);
+        value.copy< std::vector<Definition::Ptr> > (that.value);
         break;
 
       case symbol_kind::S_LowercaseParams: // LowercaseParams
       case symbol_kind::S_UppercaseParams: // UppercaseParams
-        value.copy<std::vector<std::string> >(that.value);
+        value.copy< std::vector<std::string> > (that.value);
         break;
 
       default:
         break;
-      }
+    }
 
     location = that.location;
     return *this;
   }
 
-  parser::stack_symbol_type& parser::stack_symbol_type::operator=(stack_symbol_type& that)
+  parser::stack_symbol_type&
+  parser::stack_symbol_type::operator= (stack_symbol_type& that)
   {
     state = that.state;
-    switch (that.kind())
-      {
-      case symbol_kind::S_Add:             // Add
-      case symbol_kind::S_Mul:             // Mul
-      case symbol_kind::S_Application:     // Application
+    switch (that.kind ())
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
       case symbol_kind::S_ApplicationBase: // ApplicationBase
-      case symbol_kind::S_Match:           // Match
-        value.move<AST::Ptr>(that.value);
+      case symbol_kind::S_Match: // Match
+        value.move< AST::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Branch: // Branch
-        value.move<Branch::Ptr>(that.value);
+        value.move< Branch::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Constructor: // Constructor
-        value.move<Constructor::Ptr>(that.value);
+        value.move< Constructor::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Definition: // Definition
-      case symbol_kind::S_Fn:         // Fn
-      case symbol_kind::S_Data:       // Data
-        value.move<Definition::Ptr>(that.value);
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.move< Definition::Ptr > (that.value);
         break;
 
       case symbol_kind::S_Pattern: // Pattern
-        value.move<Pattern::Ptr>(that.value);
+        value.move< Pattern::Ptr > (that.value);
         break;
 
       case symbol_kind::S_INT: // INT
-        value.move<int>(that.value);
+        value.move< int > (that.value);
         break;
 
       case symbol_kind::S_LID: // LID
       case symbol_kind::S_UID: // UID
-        value.move<std::string>(that.value);
+        value.move< std::string > (that.value);
         break;
 
       case symbol_kind::S_Branches: // Branches
-        value.move<std::vector<Branch::Ptr> >(that.value);
+        value.move< std::vector<Branch::Ptr> > (that.value);
         break;
 
       case symbol_kind::S_Constructors: // Constructors
-        value.move<std::vector<Constructor::Ptr> >(that.value);
+        value.move< std::vector<Constructor::Ptr> > (that.value);
         break;
 
-      case symbol_kind::S_Program:     // Program
+      case symbol_kind::S_Program: // Program
       case symbol_kind::S_Definitions: // Definitions
-        value.move<std::vector<Definition::Ptr> >(that.value);
+        value.move< std::vector<Definition::Ptr> > (that.value);
         break;
 
       case symbol_kind::S_LowercaseParams: // LowercaseParams
       case symbol_kind::S_UppercaseParams: // UppercaseParams
-        value.move<std::vector<std::string> >(that.value);
+        value.move< std::vector<std::string> > (that.value);
         break;
 
       default:
         break;
-      }
+    }
 
     location = that.location;
     // that is emptied.
@@ -461,61 +480,88 @@ namespace yy
 #endif
 
   template <typename Base>
-  void parser::yy_destroy_(const char* yymsg, basic_symbol<Base>& yysym) const
+  void
+  parser::yy_destroy_ (const char* yymsg, basic_symbol<Base>& yysym) const
   {
     if (yymsg)
-      YY_SYMBOL_PRINT(yymsg, yysym);
+      YY_SYMBOL_PRINT (yymsg, yysym);
   }
 
 #if YYDEBUG
   template <typename Base>
-  void parser::yy_print_(std::ostream& yyo, const basic_symbol<Base>& yysym) const
+  void
+  parser::yy_print_ (std::ostream& yyo, const basic_symbol<Base>& yysym) const
   {
     std::ostream& yyoutput = yyo;
-    YY_USE(yyoutput);
-    if (yysym.empty())
+    YY_USE (yyoutput);
+    if (yysym.empty ())
       yyo << "empty symbol";
     else
       {
-        symbol_kind_type yykind = yysym.kind();
-        yyo << (yykind < YYNTOKENS ? "token" : "nterm") << ' ' << yysym.name() << " ("
+        symbol_kind_type yykind = yysym.kind ();
+        yyo << (yykind < YYNTOKENS ? "token" : "nterm")
+            << ' ' << yysym.name () << " ("
             << yysym.location << ": ";
-        YY_USE(yykind);
+        YY_USE (yykind);
         yyo << ')';
       }
   }
 #endif
 
-  void parser::yypush_(const char* m, YY_MOVE_REF(stack_symbol_type) sym)
+  void
+  parser::yypush_ (const char* m, YY_MOVE_REF (stack_symbol_type) sym)
   {
     if (m)
-      YY_SYMBOL_PRINT(m, sym);
-    yystack_.push(YY_MOVE(sym));
+      YY_SYMBOL_PRINT (m, sym);
+    yystack_.push (YY_MOVE (sym));
   }
 
-  void parser::yypush_(const char* m, state_type s, YY_MOVE_REF(symbol_type) sym)
+  void
+  parser::yypush_ (const char* m, state_type s, YY_MOVE_REF (symbol_type) sym)
   {
 #if 201103L <= YY_CPLUSPLUS
-    yypush_(m, stack_symbol_type(s, std::move(sym)));
+    yypush_ (m, stack_symbol_type (s, std::move (sym)));
 #else
-    stack_symbol_type ss(s, sym);
-    yypush_(m, ss);
+    stack_symbol_type ss (s, sym);
+    yypush_ (m, ss);
 #endif
   }
 
-  void parser::yypop_(int n) YY_NOEXCEPT { yystack_.pop(n); }
+  void
+  parser::yypop_ (int n) YY_NOEXCEPT
+  {
+    yystack_.pop (n);
+  }
 
 #if YYDEBUG
-  std::ostream& parser::debug_stream() const { return *yycdebug_; }
+  std::ostream&
+  parser::debug_stream () const
+  {
+    return *yycdebug_;
+  }
+
+  void
+  parser::set_debug_stream (std::ostream& o)
+  {
+    yycdebug_ = &o;
+  }
 
-  void parser::set_debug_stream(std::ostream& o) { yycdebug_ = &o; }
 
-  parser::debug_level_type parser::debug_level() const { return yydebug_; }
+  parser::debug_level_type
+  parser::debug_level () const
+  {
+    return yydebug_;
+  }
 
-  void parser::set_debug_level(debug_level_type l) { yydebug_ = l; }
+  void
+  parser::set_debug_level (debug_level_type l)
+  {
+    yydebug_ = l;
+  }
 #endif // YYDEBUG
 
-  parser::state_type parser::yy_lr_goto_state_(state_type yystate, int yysym)
+  parser::state_type
+  parser::yy_lr_goto_state_ (state_type yystate, int yysym)
   {
     int yyr = yypgoto_[yysym - YYNTOKENS] + yystate;
     if (0 <= yyr && yyr <= yylast_ && yycheck_[yyr] == yystate)
@@ -524,19 +570,26 @@ namespace yy
       return yydefgoto_[yysym - YYNTOKENS];
   }
 
-  bool parser::yy_pact_value_is_default_(int yyvalue) YY_NOEXCEPT
+  bool
+  parser::yy_pact_value_is_default_ (int yyvalue) YY_NOEXCEPT
   {
     return yyvalue == yypact_ninf_;
   }
 
-  bool parser::yy_table_value_is_error_(int yyvalue) YY_NOEXCEPT
+  bool
+  parser::yy_table_value_is_error_ (int yyvalue) YY_NOEXCEPT
   {
     return yyvalue == yytable_ninf_;
   }
 
-  int parser::operator()() { return parse(); }
+  int
+  parser::operator() ()
+  {
+    return parse ();
+  }
 
-  int parser::parse()
+  int
+  parser::parse ()
   {
     int yyn;
     /// Length of the RHS of the rule being reduced.
@@ -559,845 +612,751 @@ namespace yy
     try
 #endif // YY_EXCEPTIONS
       {
-        YYCDEBUG << "Starting parse\n";
-
-        /* Initialize the stack.  The initial state will be set in
-           yynewstate, since the latter expects the semantical and the
-           location values to have been already stored, initialize these
-           stacks with a primary value.  */
-        yystack_.clear();
-        yypush_(YY_NULLPTR, 0, YY_MOVE(yyla));
-
-      /*-----------------------------------------------.
-      | yynewstate -- push a new symbol on the stack.  |
-      `-----------------------------------------------*/
-      yynewstate:
-        YYCDEBUG << "Entering state " << int(yystack_[0].state) << '\n';
-        YY_STACK_PRINT();
-
-        // Accept?
-        if (yystack_[0].state == yyfinal_)
-          YYACCEPT;
-
-        goto yybackup;
-
-      /*-----------.
-      | yybackup.  |
-      `-----------*/
-      yybackup:
-        // Try to take a decision without lookahead.
-        yyn = yypact_[+yystack_[0].state];
-        if (yy_pact_value_is_default_(yyn))
-          goto yydefault;
+    YYCDEBUG << "Starting parse\n";
 
-        // Read a lookahead token.
-        if (yyla.empty())
-          {
-            YYCDEBUG << "Reading a token\n";
-#if YY_EXCEPTIONS
-            try
-#endif // YY_EXCEPTIONS
-              {
-                symbol_type yylookahead(yylex());
-                yyla.move(yylookahead);
-              }
-#if YY_EXCEPTIONS
-            catch (const syntax_error& yyexc)
-              {
-                YYCDEBUG << "Caught exception: " << yyexc.what() << '\n';
-                error(yyexc);
-                goto yyerrlab1;
-              }
-#endif // YY_EXCEPTIONS
-          }
-        YY_SYMBOL_PRINT("Next token is", yyla);
 
-        if (yyla.kind() == symbol_kind::S_YYerror)
-          {
-            // The scanner already issued an error message, process directly
-            // to error recovery.  But do not keep the error token as
-            // lookahead, it is too special and may lead us to an endless
-            // loop in error recovery. */
-            yyla.kind_ = symbol_kind::S_YYUNDEF;
-            goto yyerrlab1;
-          }
+    /* Initialize the stack.  The initial state will be set in
+       yynewstate, since the latter expects the semantical and the
+       location values to have been already stored, initialize these
+       stacks with a primary value.  */
+    yystack_.clear ();
+    yypush_ (YY_NULLPTR, 0, YY_MOVE (yyla));
 
-        /* If the proper action on seeing token YYLA.TYPE is to reduce or
-           to detect an error, take that action.  */
-        yyn += yyla.kind();
-        if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.kind())
-          goto yydefault;
+  /*-----------------------------------------------.
+  | yynewstate -- push a new symbol on the stack.  |
+  `-----------------------------------------------*/
+  yynewstate:
+    YYCDEBUG << "Entering state " << int (yystack_[0].state) << '\n';
+    YY_STACK_PRINT ();
 
-        // Reduce or error.
-        yyn = yytable_[yyn];
-        if (yyn <= 0)
-          {
-            if (yy_table_value_is_error_(yyn))
-              goto yyerrlab;
-            yyn = -yyn;
-            goto yyreduce;
-          }
+    // Accept?
+    if (yystack_[0].state == yyfinal_)
+      YYACCEPT;
 
-        // Count tokens shifted since error; after three, turn off error status.
-        if (yyerrstatus_)
-          --yyerrstatus_;
+    goto yybackup;
 
-        // Shift the lookahead token.
-        yypush_("Shifting", state_type(yyn), YY_MOVE(yyla));
-        goto yynewstate;
 
-      /*-----------------------------------------------------------.
-      | yydefault -- do the default action for the current state.  |
-      `-----------------------------------------------------------*/
-      yydefault:
-        yyn = yydefact_[+yystack_[0].state];
-        if (yyn == 0)
-          goto yyerrlab;
-        goto yyreduce;
-
-      /*-----------------------------.
-      | yyreduce -- do a reduction.  |
-      `-----------------------------*/
-      yyreduce:
-        yylen = yyr2_[yyn];
-        {
-          stack_symbol_type yylhs;
-          yylhs.state = yy_lr_goto_state_(yystack_[yylen].state, yyr1_[yyn]);
-          /* Variants are always initialized to an empty instance of the
-             correct type. The default '$$ = $1' action is NOT applied
-             when using variants.  */
-          switch (yyr1_[yyn])
-            {
-            case symbol_kind::S_Add:             // Add
-            case symbol_kind::S_Mul:             // Mul
-            case symbol_kind::S_Application:     // Application
-            case symbol_kind::S_ApplicationBase: // ApplicationBase
-            case symbol_kind::S_Match:           // Match
-              yylhs.value.emplace<AST::Ptr>();
-              break;
-
-            case symbol_kind::S_Branch: // Branch
-              yylhs.value.emplace<Branch::Ptr>();
-              break;
-
-            case symbol_kind::S_Constructor: // Constructor
-              yylhs.value.emplace<Constructor::Ptr>();
-              break;
-
-            case symbol_kind::S_Definition: // Definition
-            case symbol_kind::S_Fn:         // Fn
-            case symbol_kind::S_Data:       // Data
-              yylhs.value.emplace<Definition::Ptr>();
-              break;
-
-            case symbol_kind::S_Pattern: // Pattern
-              yylhs.value.emplace<Pattern::Ptr>();
-              break;
-
-            case symbol_kind::S_INT: // INT
-              yylhs.value.emplace<int>();
-              break;
-
-            case symbol_kind::S_LID: // LID
-            case symbol_kind::S_UID: // UID
-              yylhs.value.emplace<std::string>();
-              break;
-
-            case symbol_kind::S_Branches: // Branches
-              yylhs.value.emplace<std::vector<Branch::Ptr> >();
-              break;
-
-            case symbol_kind::S_Constructors: // Constructors
-              yylhs.value.emplace<std::vector<Constructor::Ptr> >();
-              break;
-
-            case symbol_kind::S_Program:     // Program
-            case symbol_kind::S_Definitions: // Definitions
-              yylhs.value.emplace<std::vector<Definition::Ptr> >();
-              break;
-
-            case symbol_kind::S_LowercaseParams: // LowercaseParams
-            case symbol_kind::S_UppercaseParams: // UppercaseParams
-              yylhs.value.emplace<std::vector<std::string> >();
-              break;
-
-            default:
-              break;
-            }
+  /*-----------.
+  | yybackup.  |
+  `-----------*/
+  yybackup:
+    // Try to take a decision without lookahead.
+    yyn = yypact_[+yystack_[0].state];
+    if (yy_pact_value_is_default_ (yyn))
+      goto yydefault;
 
-          // Default location.
+    // Read a lookahead token.
+    if (yyla.empty ())
+      {
+        YYCDEBUG << "Reading a token\n";
+#if YY_EXCEPTIONS
+        try
+#endif // YY_EXCEPTIONS
           {
-            stack_type::slice range(yystack_, yylen);
-            YYLLOC_DEFAULT(yylhs.location, range, yylen);
-            yyerror_range[1].location = yylhs.location;
+            symbol_type yylookahead (yylex ());
+            yyla.move (yylookahead);
           }
-
-          // Perform the reduction.
-          YY_REDUCE_PRINT(yyn);
 #if YY_EXCEPTIONS
-          try
+        catch (const syntax_error& yyexc)
+          {
+            YYCDEBUG << "Caught exception: " << yyexc.what() << '\n';
+            error (yyexc);
+            goto yyerrlab1;
+          }
 #endif // YY_EXCEPTIONS
-            {
-              switch (yyn)
-                {
-                  case 2: // Program: Definitions
-#line 64 "./parser/parser.y"
-                  {
-                    Program =
-                      std::move(yystack_[0].value.as<std::vector<Definition::Ptr> >());
-                  }
-#line 808 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 3: // Definitions: Definitions Definition
-#line 68 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<Definition::Ptr> >() =
-                      std::move(yystack_[1].value.as<std::vector<Definition::Ptr> >());
-                    yylhs.value.as<std::vector<Definition::Ptr> >().push_back(
-                      std::move(yystack_[0].value.as<Definition::Ptr>()));
-                  }
-#line 814 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 4: // Definitions: Definition
-#line 69 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<Definition::Ptr> >() =
-                      std::vector<Definition::Ptr>();
-                    yylhs.value.as<std::vector<Definition::Ptr> >().push_back(
-                      std::move(yystack_[0].value.as<Definition::Ptr>()));
-                  }
-#line 820 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 5: // Definition: Fn
-#line 73 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Definition::Ptr>() =
-                      std::move(yystack_[0].value.as<Definition::Ptr>());
-                  }
-#line 826 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 6: // Definition: Data
-#line 74 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Definition::Ptr>() =
-                      std::move(yystack_[0].value.as<Definition::Ptr>());
-                  }
-#line 832 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 7: // Fn: FN LID OPAREN LowercaseParams CPAREN EQUAL OCURLY Add
-                          // CCURLY
-#line 79 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Definition::Ptr>() = Definition::Ptr(new Fn(
-                      yylhs.location,
-                      std::move(yystack_[7].value.as<std::string>()),
-                      std::move(yystack_[5].value.as<std::vector<std::string> >()),
-                      std::move(yystack_[1].value.as<AST::Ptr>())));
-                  }
-#line 838 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 8: // LowercaseParams: %empty
-#line 84 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<std::string> >() =
-                      std::vector<std::string>();
-                  }
-#line 844 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 9: // LowercaseParams: LID
-#line 85 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<std::string> >().push_back(
-                      std::move(yystack_[0].value.as<std::string>()));
-                  }
-#line 850 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 10: // LowercaseParams: LowercaseParams COMMA LID
-#line 86 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<std::string> >() =
-                      std::move(yystack_[2].value.as<std::vector<std::string> >());
-                    yylhs.value.as<std::vector<std::string> >().push_back(
-                      std::move(yystack_[0].value.as<std::string>()));
-                  }
-#line 856 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 11: // UppercaseParams: %empty
-#line 90 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<std::string> >() =
-                      std::vector<std::string>();
-                  }
-#line 862 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 12: // UppercaseParams: UppercaseParams UID
-#line 91 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<std::string> >() =
-                      std::move(yystack_[1].value.as<std::vector<std::string> >());
-                    yylhs.value.as<std::vector<std::string> >().push_back(
-                      std::move(yystack_[0].value.as<std::string>()));
-                  }
-#line 868 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 13: // Add: Add PLUS Mul
-#line 95 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new Binop(
-                      yylhs.location,
-                      utils::Binop::PLUS,
-                      std::move(yystack_[2].value.as<AST::Ptr>()),
-                      std::move(yystack_[0].value.as<AST::Ptr>())));
-                  }
-#line 874 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 14: // Add: Add MINUS Mul
-#line 96 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new Binop(
-                      yylhs.location,
-                      utils::Binop::MINUS,
-                      std::move(yystack_[2].value.as<AST::Ptr>()),
-                      std::move(yystack_[0].value.as<AST::Ptr>())));
-                  }
-#line 880 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 15: // Add: Mul
-#line 97 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() =
-                      std::move(yystack_[0].value.as<AST::Ptr>());
-                  }
-#line 886 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 16: // Mul: Mul TIMES Application
-#line 101 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new Binop(
-                      yylhs.location,
-                      utils::Binop::TIMES,
-                      std::move(yystack_[2].value.as<AST::Ptr>()),
-                      std::move(yystack_[0].value.as<AST::Ptr>())));
-                  }
-#line 892 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 17: // Mul: Mul DIVIDE Application
-#line 102 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new Binop(
-                      yylhs.location,
-                      utils::Binop::DIVIDE,
-                      std::move(yystack_[2].value.as<AST::Ptr>()),
-                      std::move(yystack_[0].value.as<AST::Ptr>())));
-                  }
-#line 898 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 18: // Mul: Application
-#line 103 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() =
-                      std::move(yystack_[0].value.as<AST::Ptr>());
-                  }
-#line 904 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 19: // Application: Application ApplicationBase
-#line 107 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new Application(
-                      yylhs.location,
-                      std::move(yystack_[1].value.as<AST::Ptr>()),
-                      std::move(yystack_[0].value.as<AST::Ptr>())));
-                  }
-#line 910 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 20: // Application: ApplicationBase
-#line 108 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() =
-                      std::move(yystack_[0].value.as<AST::Ptr>());
-                  }
-#line 916 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 21: // ApplicationBase: INT
-#line 112 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() =
-                      AST::Ptr(new Int(yylhs.location, yystack_[0].value.as<int>()));
-                  }
-#line 922 "./parser/bison_parser.cpp"
-                  break;
-
-                  case 22: // ApplicationBase: LID
-#line 113 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new LID(
-                      yylhs.location, std::move(yystack_[0].value.as<std::string>())));
-                  }
-#line 928 "./parser/bison_parser.cpp"
-                  break;
+      }
+    YY_SYMBOL_PRINT ("Next token is", yyla);
+
+    if (yyla.kind () == symbol_kind::S_YYerror)
+    {
+      // The scanner already issued an error message, process directly
+      // to error recovery.  But do not keep the error token as
+      // lookahead, it is too special and may lead us to an endless
+      // loop in error recovery. */
+      yyla.kind_ = symbol_kind::S_YYUNDEF;
+      goto yyerrlab1;
+    }
+
+    /* If the proper action on seeing token YYLA.TYPE is to reduce or
+       to detect an error, take that action.  */
+    yyn += yyla.kind ();
+    if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.kind ())
+      {
+        goto yydefault;
+      }
 
-                  case 23: // ApplicationBase: UID
-#line 114 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new UID(
-                      yylhs.location, std::move(yystack_[0].value.as<std::string>())));
-                  }
-#line 934 "./parser/bison_parser.cpp"
-                  break;
+    // Reduce or error.
+    yyn = yytable_[yyn];
+    if (yyn <= 0)
+      {
+        if (yy_table_value_is_error_ (yyn))
+          goto yyerrlab;
+        yyn = -yyn;
+        goto yyreduce;
+      }
 
-                  case 24: // ApplicationBase: OPAREN Add CPAREN
-#line 115 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() =
-                      std::move(yystack_[1].value.as<AST::Ptr>());
-                  }
-#line 940 "./parser/bison_parser.cpp"
-                  break;
+    // Count tokens shifted since error; after three, turn off error status.
+    if (yyerrstatus_)
+      --yyerrstatus_;
+
+    // Shift the lookahead token.
+    yypush_ ("Shifting", state_type (yyn), YY_MOVE (yyla));
+    goto yynewstate;
+
+
+  /*-----------------------------------------------------------.
+  | yydefault -- do the default action for the current state.  |
+  `-----------------------------------------------------------*/
+  yydefault:
+    yyn = yydefact_[+yystack_[0].state];
+    if (yyn == 0)
+      goto yyerrlab;
+    goto yyreduce;
+
+
+  /*-----------------------------.
+  | yyreduce -- do a reduction.  |
+  `-----------------------------*/
+  yyreduce:
+    yylen = yyr2_[yyn];
+    {
+      stack_symbol_type yylhs;
+      yylhs.state = yy_lr_goto_state_ (yystack_[yylen].state, yyr1_[yyn]);
+      /* Variants are always initialized to an empty instance of the
+         correct type. The default '$$ = $1' action is NOT applied
+         when using variants.  */
+      switch (yyr1_[yyn])
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
+      case symbol_kind::S_ApplicationBase: // ApplicationBase
+      case symbol_kind::S_Match: // Match
+        yylhs.value.emplace< AST::Ptr > ();
+        break;
 
-                  case 25: // ApplicationBase: Match
-#line 116 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() =
-                      std::move(yystack_[0].value.as<AST::Ptr>());
-                  }
-#line 946 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_Branch: // Branch
+        yylhs.value.emplace< Branch::Ptr > ();
+        break;
 
-                  case 26: // Match: MATCH Add WITH OCURLY Branches CCURLY
-#line 121 "./parser/parser.y"
-                  {
-                    yylhs.value.as<AST::Ptr>() = AST::Ptr(new Match(
-                      yylhs.location,
-                      std::move(yystack_[4].value.as<AST::Ptr>()),
-                      std::move(yystack_[1].value.as<std::vector<Branch::Ptr> >())));
-                  }
-#line 952 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_Constructor: // Constructor
+        yylhs.value.emplace< Constructor::Ptr > ();
+        break;
 
-                  case 27: // Branches: Branches Branch
-#line 125 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<Branch::Ptr> >() =
-                      std::move(yystack_[1].value.as<std::vector<Branch::Ptr> >());
-                    yylhs.value.as<std::vector<Branch::Ptr> >().push_back(
-                      std::move(yystack_[0].value.as<Branch::Ptr>()));
-                  }
-#line 958 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_Definition: // Definition
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        yylhs.value.emplace< Definition::Ptr > ();
+        break;
 
-                  case 28: // Branches: Branch
-#line 126 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<Branch::Ptr> >() =
-                      std::vector<Branch::Ptr>();
-                    yylhs.value.as<std::vector<Branch::Ptr> >().push_back(
-                      std::move(yystack_[0].value.as<Branch::Ptr>()));
-                  }
-#line 964 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_Pattern: // Pattern
+        yylhs.value.emplace< Pattern::Ptr > ();
+        break;
 
-                  case 29: // Branch: VERTIAL Pattern DOUBLEARROW OCURLY Add CCURLY
-#line 131 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Branch::Ptr>() = Branch::Ptr(new Branch(
-                      yylhs.location,
-                      std::move(yystack_[4].value.as<Pattern::Ptr>()),
-                      std::move(yystack_[1].value.as<AST::Ptr>())));
-                  }
-#line 970 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_INT: // INT
+        yylhs.value.emplace< int > ();
+        break;
 
-                  case 30: // Pattern: LID
-#line 135 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Pattern::Ptr>() = Pattern::Ptr(new VariablePattern(
-                      yylhs.location, std::move(yystack_[0].value.as<std::string>())));
-                  }
-#line 976 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_LID: // LID
+      case symbol_kind::S_UID: // UID
+        yylhs.value.emplace< std::string > ();
+        break;
 
-                  case 31: // Pattern: UID
-#line 136 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Pattern::Ptr>() = Pattern::Ptr(new ConstructorPattern(
-                      yylhs.location,
-                      std::move(yystack_[0].value.as<std::string>()),
-                      std::vector<std::string>()));
-                  }
-#line 982 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_Branches: // Branches
+        yylhs.value.emplace< std::vector<Branch::Ptr> > ();
+        break;
 
-                  case 32: // Pattern: UID OPAREN LowercaseParams CPAREN
-#line 138 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Pattern::Ptr>() = Pattern::Ptr(new ConstructorPattern(
-                      yylhs.location,
-                      std::move(yystack_[3].value.as<std::string>()),
-                      std::move(yystack_[1].value.as<std::vector<std::string> >())));
-                  }
-#line 988 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_Constructors: // Constructors
+        yylhs.value.emplace< std::vector<Constructor::Ptr> > ();
+        break;
 
-                  case 33: // Data: DATA UID EQUAL OBRACKET Constructors CBRACKET
-#line 143 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Definition::Ptr>() = Definition::Ptr(new Data(
-                      yylhs.location,
-                      std::move(yystack_[4].value.as<std::string>()),
-                      std::move(yystack_[1].value.as<std::vector<Constructor::Ptr> >())));
-                  }
-#line 994 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_Program: // Program
+      case symbol_kind::S_Definitions: // Definitions
+        yylhs.value.emplace< std::vector<Definition::Ptr> > ();
+        break;
 
-                  case 34: // Constructors: Constructors COMMA Constructor
-#line 147 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<Constructor::Ptr> >() =
-                      std::move(yystack_[2].value.as<std::vector<Constructor::Ptr> >());
-                    yylhs.value.as<std::vector<Constructor::Ptr> >().push_back(
-                      std::move(yystack_[0].value.as<Constructor::Ptr>()));
-                  }
-#line 1000 "./parser/bison_parser.cpp"
-                  break;
+      case symbol_kind::S_LowercaseParams: // LowercaseParams
+      case symbol_kind::S_UppercaseParams: // UppercaseParams
+        yylhs.value.emplace< std::vector<std::string> > ();
+        break;
 
-                  case 35: // Constructors: Constructor
-#line 149 "./parser/parser.y"
-                  {
-                    yylhs.value.as<std::vector<Constructor::Ptr> >() =
-                      std::vector<Constructor::Ptr>();
-                    yylhs.value.as<std::vector<Constructor::Ptr> >().push_back(
-                      std::move(yystack_[0].value.as<Constructor::Ptr>()));
-                  }
-#line 1006 "./parser/bison_parser.cpp"
-                  break;
+      default:
+        break;
+    }
 
-                  case 36: // Constructor: UID UppercaseParams
-#line 154 "./parser/parser.y"
-                  {
-                    yylhs.value.as<Constructor::Ptr>() = Constructor::Ptr(new Constructor(
-                      yylhs.location,
-                      std::move(yystack_[1].value.as<std::string>()),
-                      std::move(yystack_[0].value.as<std::vector<std::string> >())));
-                  }
-#line 1012 "./parser/bison_parser.cpp"
-                  break;
 
-#line 1016 "./parser/bison_parser.cpp"
+      // Default location.
+      {
+        stack_type::slice range (yystack_, yylen);
+        YYLLOC_DEFAULT (yylhs.location, range, yylen);
+        yyerror_range[1].location = yylhs.location;
+      }
 
-                default:
-                  break;
-                }
-            }
+      // Perform the reduction.
+      YY_REDUCE_PRINT (yyn);
 #if YY_EXCEPTIONS
-          catch (const syntax_error& yyexc)
+      try
+#endif // YY_EXCEPTIONS
+        {
+          switch (yyn)
             {
-              YYCDEBUG << "Caught exception: " << yyexc.what() << '\n';
-              error(yyexc);
-              YYERROR;
+  case 2: // Program: Definitions
+#line 63 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                  { Program = std::move(yystack_[0].value.as < std::vector<Definition::Ptr> > ()); }
+#line 807 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 3: // Definitions: Definitions Definition
+#line 67 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                             { yylhs.value.as < std::vector<Definition::Ptr> > () = std::move(yystack_[1].value.as < std::vector<Definition::Ptr> > ()); yylhs.value.as < std::vector<Definition::Ptr> > ().push_back(std::move(yystack_[0].value.as < Definition::Ptr > ())); }
+#line 813 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 4: // Definitions: Definition
+#line 68 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                 { yylhs.value.as < std::vector<Definition::Ptr> > () = std::vector<Definition::Ptr>(); yylhs.value.as < std::vector<Definition::Ptr> > ().push_back(std::move(yystack_[0].value.as < Definition::Ptr > ())); }
+#line 819 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 5: // Definition: Fn
+#line 72 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+         { yylhs.value.as < Definition::Ptr > () = std::move(yystack_[0].value.as < Definition::Ptr > ()); }
+#line 825 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 6: // Definition: Data
+#line 73 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+           { yylhs.value.as < Definition::Ptr > () = std::move(yystack_[0].value.as < Definition::Ptr > ()); }
+#line 831 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 7: // Fn: FN LID OPAREN LowercaseParams CPAREN EQUAL OCURLY Add CCURLY
+#line 78 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+        { yylhs.value.as < Definition::Ptr > () = Definition::Ptr(new Fn(yylhs.location, std::move(yystack_[7].value.as < std::string > ()), std::move(yystack_[5].value.as < std::vector<std::string> > ()), std::move(yystack_[1].value.as < AST::Ptr > ()))); }
+#line 837 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 8: // LowercaseParams: %empty
+#line 83 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+             { yylhs.value.as < std::vector<std::string> > () = std::vector<std::string>(); }
+#line 843 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 9: // LowercaseParams: LID
+#line 84 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+          { yylhs.value.as < std::vector<std::string> > ().push_back(std::move(yystack_[0].value.as < std::string > ())); }
+#line 849 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 10: // LowercaseParams: LowercaseParams COMMA LID
+#line 85 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                                { yylhs.value.as < std::vector<std::string> > () = std::move(yystack_[2].value.as < std::vector<std::string> > ()); yylhs.value.as < std::vector<std::string> > ().push_back(std::move(yystack_[0].value.as < std::string > ())); }
+#line 855 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 11: // UppercaseParams: %empty
+#line 89 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+             { yylhs.value.as < std::vector<std::string> > () = std::vector<std::string>(); }
+#line 861 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 12: // UppercaseParams: UppercaseParams UID
+#line 90 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                          { yylhs.value.as < std::vector<std::string> > () = std::move(yystack_[1].value.as < std::vector<std::string> > ()); yylhs.value.as < std::vector<std::string> > ().push_back(std::move(yystack_[0].value.as < std::string > ())); }
+#line 867 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 13: // Add: Add PLUS Mul
+#line 94 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                   { yylhs.value.as < AST::Ptr > () = AST::Ptr(new Binop(yylhs.location, utils::Binop::PLUS, std::move(yystack_[2].value.as < AST::Ptr > ()), std::move(yystack_[0].value.as < AST::Ptr > ()))); }
+#line 873 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 14: // Add: Add MINUS Mul
+#line 95 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                    { yylhs.value.as < AST::Ptr > () = AST::Ptr(new Binop(yylhs.location, utils::Binop::MINUS, std::move(yystack_[2].value.as < AST::Ptr > ()), std::move(yystack_[0].value.as < AST::Ptr > ()))); }
+#line 879 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 15: // Add: Mul
+#line 96 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+          { yylhs.value.as < AST::Ptr > () = std::move(yystack_[0].value.as < AST::Ptr > ()); }
+#line 885 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 16: // Mul: Mul TIMES Application
+#line 100 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                            { yylhs.value.as < AST::Ptr > () = AST::Ptr(new Binop(yylhs.location, utils::Binop::TIMES, std::move(yystack_[2].value.as < AST::Ptr > ()), std::move(yystack_[0].value.as < AST::Ptr > ()))); }
+#line 891 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 17: // Mul: Mul DIVIDE Application
+#line 101 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                             { yylhs.value.as < AST::Ptr > () = AST::Ptr(new Binop(yylhs.location, utils::Binop::DIVIDE, std::move(yystack_[2].value.as < AST::Ptr > ()), std::move(yystack_[0].value.as < AST::Ptr > ()))); }
+#line 897 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 18: // Mul: Application
+#line 102 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                  { yylhs.value.as < AST::Ptr > () = std::move(yystack_[0].value.as < AST::Ptr > ()); }
+#line 903 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 19: // Application: Application ApplicationBase
+#line 106 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                                  { yylhs.value.as < AST::Ptr > () = AST::Ptr(new Application(yylhs.location, std::move(yystack_[1].value.as < AST::Ptr > ()), std::move(yystack_[0].value.as < AST::Ptr > ()))); }
+#line 909 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 20: // Application: ApplicationBase
+#line 107 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                      { yylhs.value.as < AST::Ptr > () = std::move(yystack_[0].value.as < AST::Ptr > ()); }
+#line 915 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 21: // ApplicationBase: INT
+#line 111 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+          { yylhs.value.as < AST::Ptr > () = AST::Ptr(new Int(yylhs.location, yystack_[0].value.as < int > ())); }
+#line 921 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 22: // ApplicationBase: LID
+#line 112 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+          { yylhs.value.as < AST::Ptr > () = AST::Ptr(new LID(yylhs.location, std::move(yystack_[0].value.as < std::string > ()))); }
+#line 927 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 23: // ApplicationBase: UID
+#line 113 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+          { yylhs.value.as < AST::Ptr > () = AST::Ptr(new UID(yylhs.location, std::move(yystack_[0].value.as < std::string > ()))); }
+#line 933 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 24: // ApplicationBase: OPAREN Add CPAREN
+#line 114 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                        { yylhs.value.as < AST::Ptr > () = std::move(yystack_[1].value.as < AST::Ptr > ()); }
+#line 939 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 25: // ApplicationBase: Match
+#line 115 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+            { yylhs.value.as < AST::Ptr > () = std::move(yystack_[0].value.as < AST::Ptr > ()); }
+#line 945 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 26: // Match: MATCH Add WITH OCURLY Branches CCURLY
+#line 120 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+        { yylhs.value.as < AST::Ptr > () = AST::Ptr(new Match(yylhs.location, std::move(yystack_[4].value.as < AST::Ptr > ()), std::move(yystack_[1].value.as < std::vector<Branch::Ptr> > ()))); }
+#line 951 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 27: // Branches: Branches Branch
+#line 124 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                      { yylhs.value.as < std::vector<Branch::Ptr> > () = std::move(yystack_[1].value.as < std::vector<Branch::Ptr> > ()); yylhs.value.as < std::vector<Branch::Ptr> > ().push_back(std::move(yystack_[0].value.as < Branch::Ptr > ())); }
+#line 957 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 28: // Branches: Branch
+#line 125 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+             { yylhs.value.as < std::vector<Branch::Ptr> > () = std::vector<Branch::Ptr>(); yylhs.value.as < std::vector<Branch::Ptr> > ().push_back(std::move(yystack_[0].value.as < Branch::Ptr > ()));}
+#line 963 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 29: // Branch: VERTIAL Pattern DOUBLEARROW OCURLY Add CCURLY
+#line 130 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+        { yylhs.value.as < Branch::Ptr > () = Branch::Ptr(new Branch(yylhs.location, std::move(yystack_[4].value.as < Pattern::Ptr > ()), std::move(yystack_[1].value.as < AST::Ptr > ()))); }
+#line 969 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 30: // Pattern: LID
+#line 134 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+          { yylhs.value.as < Pattern::Ptr > () = Pattern::Ptr(new VariablePattern(yylhs.location, std::move(yystack_[0].value.as < std::string > ()))); }
+#line 975 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 31: // Pattern: UID
+#line 135 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+          { yylhs.value.as < Pattern::Ptr > () = Pattern::Ptr(new ConstructorPattern(yylhs.location, std::move(yystack_[0].value.as < std::string > ()), std::vector<std::string>())); }
+#line 981 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 32: // Pattern: UID OPAREN LowercaseParams CPAREN
+#line 137 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+        { yylhs.value.as < Pattern::Ptr > () = Pattern::Ptr(new ConstructorPattern(yylhs.location, std::move(yystack_[3].value.as < std::string > ()), std::move(yystack_[1].value.as < std::vector<std::string> > ()))); }
+#line 987 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 33: // Data: DATA UID EQUAL OBRACKET Constructors CBRACKET
+#line 142 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+        { yylhs.value.as < Definition::Ptr > () = Definition::Ptr(new Data(yylhs.location, std::move(yystack_[4].value.as < std::string > ()), std::move(yystack_[1].value.as < std::vector<Constructor::Ptr> > ()))); }
+#line 993 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 34: // Constructors: Constructors COMMA Constructor
+#line 146 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+                                     { yylhs.value.as < std::vector<Constructor::Ptr> > () = std::move(yystack_[2].value.as < std::vector<Constructor::Ptr> > ()); yylhs.value.as < std::vector<Constructor::Ptr> > ().push_back(std::move(yystack_[0].value.as < Constructor::Ptr > ())); }
+#line 999 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 35: // Constructors: Constructor
+#line 148 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+        { yylhs.value.as < std::vector<Constructor::Ptr> > () = std::vector<Constructor::Ptr>(); yylhs.value.as < std::vector<Constructor::Ptr> > ().push_back(std::move(yystack_[0].value.as < Constructor::Ptr > ())); }
+#line 1005 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+  case 36: // Constructor: UID UppercaseParams
+#line 153 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+        { yylhs.value.as < Constructor::Ptr > () = Constructor::Ptr(new Constructor(yylhs.location, std::move(yystack_[1].value.as < std::string > ()), std::move(yystack_[0].value.as < std::vector<std::string> > ()))); }
+#line 1011 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+    break;
+
+
+#line 1015 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+
+            default:
+              break;
             }
+        }
+#if YY_EXCEPTIONS
+      catch (const syntax_error& yyexc)
+        {
+          YYCDEBUG << "Caught exception: " << yyexc.what() << '\n';
+          error (yyexc);
+          YYERROR;
+        }
 #endif // YY_EXCEPTIONS
-          YY_SYMBOL_PRINT("-> $$ =", yylhs);
-          yypop_(yylen);
-          yylen = 0;
+      YY_SYMBOL_PRINT ("-> $$ =", yylhs);
+      yypop_ (yylen);
+      yylen = 0;
+
+      // Shift the result of the reduction.
+      yypush_ (YY_NULLPTR, YY_MOVE (yylhs));
+    }
+    goto yynewstate;
+
+
+  /*--------------------------------------.
+  | yyerrlab -- here on detecting error.  |
+  `--------------------------------------*/
+  yyerrlab:
+    // If not already recovering from an error, report this error.
+    if (!yyerrstatus_)
+      {
+        ++yynerrs_;
+        std::string msg = YY_("syntax error");
+        error (yyla.location, YY_MOVE (msg));
+      }
 
-          // Shift the result of the reduction.
-          yypush_(YY_NULLPTR, YY_MOVE(yylhs));
-        }
-        goto yynewstate;
-
-      /*--------------------------------------.
-      | yyerrlab -- here on detecting error.  |
-      `--------------------------------------*/
-      yyerrlab:
-        // If not already recovering from an error, report this error.
-        if (!yyerrstatus_)
-          {
-            ++yynerrs_;
-            std::string msg = YY_("syntax error");
-            error(yyla.location, YY_MOVE(msg));
-          }
 
-        yyerror_range[1].location = yyla.location;
-        if (yyerrstatus_ == 3)
-          {
-            /* If just tried and failed to reuse lookahead token after an
-               error, discard it.  */
+    yyerror_range[1].location = yyla.location;
+    if (yyerrstatus_ == 3)
+      {
+        /* If just tried and failed to reuse lookahead token after an
+           error, discard it.  */
 
-            // Return failure if at end of input.
-            if (yyla.kind() == symbol_kind::S_YYEOF)
-              YYABORT;
-            else if (!yyla.empty())
-              {
-                yy_destroy_("Error: discarding", yyla);
-                yyla.clear();
-              }
+        // Return failure if at end of input.
+        if (yyla.kind () == symbol_kind::S_YYEOF)
+          YYABORT;
+        else if (!yyla.empty ())
+          {
+            yy_destroy_ ("Error: discarding", yyla);
+            yyla.clear ();
           }
+      }
 
-        // Else will try to reuse lookahead token after shifting the error token.
-        goto yyerrlab1;
-
-      /*---------------------------------------------------.
-      | yyerrorlab -- error raised explicitly by YYERROR.  |
-      `---------------------------------------------------*/
-      yyerrorlab:
-        /* Pacify compilers when the user code never invokes YYERROR and
-           the label yyerrorlab therefore never appears in user code.  */
-        if (false)
-          YYERROR;
-
-        /* Do not reclaim the symbols of the rule whose action triggered
-           this YYERROR.  */
-        yypop_(yylen);
-        yylen = 0;
-        YY_STACK_PRINT();
-        goto yyerrlab1;
-
-      /*-------------------------------------------------------------.
-      | yyerrlab1 -- common code for both syntax error and YYERROR.  |
-      `-------------------------------------------------------------*/
-      yyerrlab1:
-        yyerrstatus_ = 3; // Each real token shifted decrements this.
-        // Pop stack until we find a state that shifts the error token.
-        for (;;)
+    // Else will try to reuse lookahead token after shifting the error token.
+    goto yyerrlab1;
+
+
+  /*---------------------------------------------------.
+  | yyerrorlab -- error raised explicitly by YYERROR.  |
+  `---------------------------------------------------*/
+  yyerrorlab:
+    /* Pacify compilers when the user code never invokes YYERROR and
+       the label yyerrorlab therefore never appears in user code.  */
+    if (false)
+      YYERROR;
+
+    /* Do not reclaim the symbols of the rule whose action triggered
+       this YYERROR.  */
+    yypop_ (yylen);
+    yylen = 0;
+    YY_STACK_PRINT ();
+    goto yyerrlab1;
+
+
+  /*-------------------------------------------------------------.
+  | yyerrlab1 -- common code for both syntax error and YYERROR.  |
+  `-------------------------------------------------------------*/
+  yyerrlab1:
+    yyerrstatus_ = 3;   // Each real token shifted decrements this.
+    // Pop stack until we find a state that shifts the error token.
+    for (;;)
+      {
+        yyn = yypact_[+yystack_[0].state];
+        if (!yy_pact_value_is_default_ (yyn))
           {
-            yyn = yypact_[+yystack_[0].state];
-            if (!yy_pact_value_is_default_(yyn))
+            yyn += symbol_kind::S_YYerror;
+            if (0 <= yyn && yyn <= yylast_
+                && yycheck_[yyn] == symbol_kind::S_YYerror)
               {
-                yyn += symbol_kind::S_YYerror;
-                if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == symbol_kind::S_YYerror)
-                  {
-                    yyn = yytable_[yyn];
-                    if (0 < yyn)
-                      break;
-                  }
+                yyn = yytable_[yyn];
+                if (0 < yyn)
+                  break;
               }
-
-            // Pop the current state because it cannot handle the error token.
-            if (yystack_.size() == 1)
-              YYABORT;
-
-            yyerror_range[1].location = yystack_[0].location;
-            yy_destroy_("Error: popping", yystack_[0]);
-            yypop_();
-            YY_STACK_PRINT();
           }
-        {
-          stack_symbol_type error_token;
 
-          yyerror_range[2].location = yyla.location;
-          YYLLOC_DEFAULT(error_token.location, yyerror_range, 2);
+        // Pop the current state because it cannot handle the error token.
+        if (yystack_.size () == 1)
+          YYABORT;
 
-          // Shift the error token.
-          error_token.state = state_type(yyn);
-          yypush_("Shifting", YY_MOVE(error_token));
-        }
-        goto yynewstate;
-
-      /*-------------------------------------.
-      | yyacceptlab -- YYACCEPT comes here.  |
-      `-------------------------------------*/
-      yyacceptlab:
-        yyresult = 0;
-        goto yyreturn;
-
-      /*-----------------------------------.
-      | yyabortlab -- YYABORT comes here.  |
-      `-----------------------------------*/
-      yyabortlab:
-        yyresult = 1;
-        goto yyreturn;
-
-      /*-----------------------------------------------------.
-      | yyreturn -- parsing is finished, return the result.  |
-      `-----------------------------------------------------*/
-      yyreturn:
-        if (!yyla.empty())
-          yy_destroy_("Cleanup: discarding lookahead", yyla);
-
-        /* Do not reclaim the symbols of the rule whose action triggered
-           this YYABORT or YYACCEPT.  */
-        yypop_(yylen);
-        YY_STACK_PRINT();
-        while (1 < yystack_.size())
-          {
-            yy_destroy_("Cleanup: popping", yystack_[0]);
-            yypop_();
-          }
-
-        return yyresult;
+        yyerror_range[1].location = yystack_[0].location;
+        yy_destroy_ ("Error: popping", yystack_[0]);
+        yypop_ ();
+        YY_STACK_PRINT ();
       }
+    {
+      stack_symbol_type error_token;
+
+      yyerror_range[2].location = yyla.location;
+      YYLLOC_DEFAULT (error_token.location, yyerror_range, 2);
+
+      // Shift the error token.
+      error_token.state = state_type (yyn);
+      yypush_ ("Shifting", YY_MOVE (error_token));
+    }
+    goto yynewstate;
+
+
+  /*-------------------------------------.
+  | yyacceptlab -- YYACCEPT comes here.  |
+  `-------------------------------------*/
+  yyacceptlab:
+    yyresult = 0;
+    goto yyreturn;
+
+
+  /*-----------------------------------.
+  | yyabortlab -- YYABORT comes here.  |
+  `-----------------------------------*/
+  yyabortlab:
+    yyresult = 1;
+    goto yyreturn;
+
+
+  /*-----------------------------------------------------.
+  | yyreturn -- parsing is finished, return the result.  |
+  `-----------------------------------------------------*/
+  yyreturn:
+    if (!yyla.empty ())
+      yy_destroy_ ("Cleanup: discarding lookahead", yyla);
+
+    /* Do not reclaim the symbols of the rule whose action triggered
+       this YYABORT or YYACCEPT.  */
+    yypop_ (yylen);
+    YY_STACK_PRINT ();
+    while (1 < yystack_.size ())
+      {
+        yy_destroy_ ("Cleanup: popping", yystack_[0]);
+        yypop_ ();
+      }
+
+    return yyresult;
+  }
 #if YY_EXCEPTIONS
     catch (...)
       {
         YYCDEBUG << "Exception caught: cleaning lookahead and stack\n";
         // Do not try to display the values of the reclaimed symbols,
         // as their printers might throw an exception.
-        if (!yyla.empty())
-          yy_destroy_(YY_NULLPTR, yyla);
+        if (!yyla.empty ())
+          yy_destroy_ (YY_NULLPTR, yyla);
 
-        while (1 < yystack_.size())
+        while (1 < yystack_.size ())
           {
-            yy_destroy_(YY_NULLPTR, yystack_[0]);
-            yypop_();
+            yy_destroy_ (YY_NULLPTR, yystack_[0]);
+            yypop_ ();
           }
         throw;
       }
 #endif // YY_EXCEPTIONS
   }
 
-  void parser::error(const syntax_error& yyexc) { error(yyexc.location, yyexc.what()); }
+  void
+  parser::error (const syntax_error& yyexc)
+  {
+    error (yyexc.location, yyexc.what ());
+  }
 
 #if YYDEBUG || 0
-  const char* parser::symbol_name(symbol_kind_type yysymbol)
+  const char *
+  parser::symbol_name (symbol_kind_type yysymbol)
   {
     return yytname_[yysymbol];
   }
 #endif // #if YYDEBUG || 0
 
-  const signed char parser::yypact_ninf_ = -32;
 
-  const signed char parser::yytable_ninf_ = -1;
 
-  const signed char parser::yypact_[] = {
-    28, -21, 0,   29,  28,  -32, -32, -32, 19,  15, -32, -32, 7,   27,  -32, -3,  25,  23,
-    30, -32, 22,  -32, 35,  -32, 26,  -32, 25,  -5, -32, -32, -32, -5,  -5,  -32, -32, 5,
-    24, -5,  -32, -32, 21,  1,   -5,  -5,  -32, -5, -5,  -32, 40,  -32, 24,  24,  -5,  -5,
-    33, 17,  14,  -32, -32, 41,  34,  -32, -32, 7,  45,  -1,  -5,  -32, 8,   -32};
 
-  const signed char parser::yydefact_[] = {
-    0,  0,  0,  0,  2,  4,  5,  6,  0,  0, 1,  3,  8,  0,  9,  0,  0,  0,
-    0,  11, 0,  35, 0,  10, 36, 33, 0,  0, 12, 34, 21, 0,  0,  22, 23, 0,
-    15, 18, 20, 25, 0,  0,  0,  0,  7,  0, 0,  19, 0,  24, 13, 14, 16, 17,
-    0,  0,  0,  28, 30, 31, 0,  26, 27, 8, 0,  0,  0,  32, 0,  29};
 
-  const signed char parser::yypgoto_[] = {
-    -32, -32, -32, 54, -32, -4, -32, -31, 2, 3, -30, -32, -32, 4, -32, -32, -32, 36};
 
-  const signed char parser::yydefgoto_[] = {
-    0, 3, 4, 5, 6, 15, 24, 35, 36, 37, 38, 39, 56, 57, 60, 7, 20, 21};
 
-  const signed char parser::yytable_[] = {
-    40, 41, 30, 8,  42, 31, 43, 47, 42, 32, 43, 42, 17, 43, 67, 18, 49, 18, 44, 33, 34,
-    69, 47, 47, 42, 9,  43, 61, 45, 10, 46, 14, 48, 12, 55, 68, 1,  2,  13, 25, 26, 58,
-    59, 16, 50, 51, 22, 27, 52, 53, 19, 28, 54, 55, 23, 63, 64, 66, 11, 65, 62, 0,  29};
 
-  const signed char parser::yycheck_[] = {
-    31, 32, 7,  24, 3,  10, 5,  37, 3,  14, 5,  3,  15, 5,  15, 18, 15, 18, 13, 24, 25,
-    13, 52, 53, 3,  25, 5,  13, 4,  0,  6,  24, 11, 14, 20, 66, 8,  9,  23, 17, 18, 24,
-    25, 16, 42, 43, 23, 12, 45, 46, 25, 25, 12, 20, 24, 14, 22, 12, 4,  63, 56, -1, 26};
 
-  const signed char parser::yystos_[] = {
-    0,  8,  9,  27, 28, 29, 30, 41, 24, 25, 0,  29, 14, 23, 24, 31, 16, 15,
-    18, 25, 42, 43, 23, 24, 32, 17, 18, 12, 25, 43, 7,  10, 14, 24, 25, 33,
-    34, 35, 36, 37, 33, 33, 3,  5,  13, 4,  6,  36, 11, 15, 34, 34, 35, 35,
-    12, 20, 38, 39, 24, 25, 40, 13, 39, 14, 22, 31, 12, 15, 33, 13};
+  const signed char parser::yypact_ninf_ = -32;
 
-  const signed char parser::yyr1_[] = {0,  26, 27, 28, 28, 29, 29, 30, 31, 31, 31, 32, 32,
-                                       33, 33, 33, 34, 34, 34, 35, 35, 36, 36, 36, 36, 36,
-                                       37, 38, 38, 39, 40, 40, 40, 41, 42, 42, 43};
+  const signed char parser::yytable_ninf_ = -1;
+
+  const signed char
+  parser::yypact_[] =
+  {
+      28,   -21,     0,    29,    28,   -32,   -32,   -32,    19,    15,
+     -32,   -32,     7,    27,   -32,    -3,    25,    23,    30,   -32,
+      22,   -32,    35,   -32,    26,   -32,    25,    -5,   -32,   -32,
+     -32,    -5,    -5,   -32,   -32,     5,    24,    -5,   -32,   -32,
+      21,     1,    -5,    -5,   -32,    -5,    -5,   -32,    40,   -32,
+      24,    24,    -5,    -5,    33,    17,    14,   -32,   -32,    41,
+      34,   -32,   -32,     7,    45,    -1,    -5,   -32,     8,   -32
+  };
+
+  const signed char
+  parser::yydefact_[] =
+  {
+       0,     0,     0,     0,     2,     4,     5,     6,     0,     0,
+       1,     3,     8,     0,     9,     0,     0,     0,     0,    11,
+       0,    35,     0,    10,    36,    33,     0,     0,    12,    34,
+      21,     0,     0,    22,    23,     0,    15,    18,    20,    25,
+       0,     0,     0,     0,     7,     0,     0,    19,     0,    24,
+      13,    14,    16,    17,     0,     0,     0,    28,    30,    31,
+       0,    26,    27,     8,     0,     0,     0,    32,     0,    29
+  };
+
+  const signed char
+  parser::yypgoto_[] =
+  {
+     -32,   -32,   -32,    54,   -32,    -4,   -32,   -31,     2,     3,
+     -30,   -32,   -32,     4,   -32,   -32,   -32,    36
+  };
+
+  const signed char
+  parser::yydefgoto_[] =
+  {
+       0,     3,     4,     5,     6,    15,    24,    35,    36,    37,
+      38,    39,    56,    57,    60,     7,    20,    21
+  };
+
+  const signed char
+  parser::yytable_[] =
+  {
+      40,    41,    30,     8,    42,    31,    43,    47,    42,    32,
+      43,    42,    17,    43,    67,    18,    49,    18,    44,    33,
+      34,    69,    47,    47,    42,     9,    43,    61,    45,    10,
+      46,    14,    48,    12,    55,    68,     1,     2,    13,    25,
+      26,    58,    59,    16,    50,    51,    22,    27,    52,    53,
+      19,    28,    54,    55,    23,    63,    64,    66,    11,    65,
+      62,     0,    29
+  };
+
+  const signed char
+  parser::yycheck_[] =
+  {
+      31,    32,     7,    24,     3,    10,     5,    37,     3,    14,
+       5,     3,    15,     5,    15,    18,    15,    18,    13,    24,
+      25,    13,    52,    53,     3,    25,     5,    13,     4,     0,
+       6,    24,    11,    14,    20,    66,     8,     9,    23,    17,
+      18,    24,    25,    16,    42,    43,    23,    12,    45,    46,
+      25,    25,    12,    20,    24,    14,    22,    12,     4,    63,
+      56,    -1,    26
+  };
+
+  const signed char
+  parser::yystos_[] =
+  {
+       0,     8,     9,    27,    28,    29,    30,    41,    24,    25,
+       0,    29,    14,    23,    24,    31,    16,    15,    18,    25,
+      42,    43,    23,    24,    32,    17,    18,    12,    25,    43,
+       7,    10,    14,    24,    25,    33,    34,    35,    36,    37,
+      33,    33,     3,     5,    13,     4,     6,    36,    11,    15,
+      34,    34,    35,    35,    12,    20,    38,    39,    24,    25,
+      40,    13,    39,    14,    22,    31,    12,    15,    33,    13
+  };
+
+  const signed char
+  parser::yyr1_[] =
+  {
+       0,    26,    27,    28,    28,    29,    29,    30,    31,    31,
+      31,    32,    32,    33,    33,    33,    34,    34,    34,    35,
+      35,    36,    36,    36,    36,    36,    37,    38,    38,    39,
+      40,    40,    40,    41,    42,    42,    43
+  };
+
+  const signed char
+  parser::yyr2_[] =
+  {
+       0,     2,     1,     2,     1,     1,     1,     9,     0,     1,
+       3,     0,     2,     3,     3,     1,     3,     3,     1,     2,
+       1,     1,     1,     1,     3,     1,     6,     2,     1,     6,
+       1,     1,     4,     6,     3,     1,     2
+  };
 
-  const signed char parser::yyr2_[] = {0, 2, 1, 2, 1, 1, 1, 9, 0, 1, 3, 0, 2,
-                                       3, 3, 1, 3, 3, 1, 2, 1, 1, 1, 1, 3, 1,
-                                       6, 2, 1, 6, 1, 1, 4, 6, 3, 1, 2};
 
 #if YYDEBUG
   // YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
   // First, the terminals, then, starting at \a YYNTOKENS, nonterminals.
-  const char* const parser::yytname_[] = {
-    "\"end of file\"",
-    "error",
-    "\"invalid token\"",
-    "PLUS",
-    "TIMES",
-    "MINUS",
-    "DIVIDE",
-    "INT",
-    "FN",
-    "DATA",
-    "MATCH",
-    "WITH",
-    "OCURLY",
-    "CCURLY",
-    "OPAREN",
-    "CPAREN",
-    "OBRACKET",
-    "CBRACKET",
-    "COMMA",
-    "ARROW",
-    "VERTIAL",
-    "SEMICOLON",
-    "DOUBLEARROW",
-    "EQUAL",
-    "LID",
-    "UID",
-    "$accept",
-    "Program",
-    "Definitions",
-    "Definition",
-    "Fn",
-    "LowercaseParams",
-    "UppercaseParams",
-    "Add",
-    "Mul",
-    "Application",
-    "ApplicationBase",
-    "Match",
-    "Branches",
-    "Branch",
-    "Pattern",
-    "Data",
-    "Constructors",
-    "Constructor",
-    YY_NULLPTR};
+  const char*
+  const parser::yytname_[] =
+  {
+  "\"end of file\"", "error", "\"invalid token\"", "PLUS", "TIMES",
+  "MINUS", "DIVIDE", "INT", "FN", "DATA", "MATCH", "WITH", "OCURLY",
+  "CCURLY", "OPAREN", "CPAREN", "OBRACKET", "CBRACKET", "COMMA", "ARROW",
+  "VERTIAL", "SEMICOLON", "DOUBLEARROW", "EQUAL", "LID", "UID", "$accept",
+  "Program", "Definitions", "Definition", "Fn", "LowercaseParams",
+  "UppercaseParams", "Add", "Mul", "Application", "ApplicationBase",
+  "Match", "Branches", "Branch", "Pattern", "Data", "Constructors",
+  "Constructor", YY_NULLPTR
+  };
 #endif
 
-#if YYDEBUG
-  const unsigned char parser::yyrline_[] = {
-    0,   64,  64,  68,  69,  73,  74,  78,  84,  85,  86,  90,  91,
-    95,  96,  97,  101, 102, 103, 107, 108, 112, 113, 114, 115, 116,
-    120, 125, 126, 130, 135, 136, 137, 142, 147, 148, 153};
 
-  void parser::yy_stack_print_() const
+#if YYDEBUG
+  const unsigned char
+  parser::yyrline_[] =
+  {
+       0,    63,    63,    67,    68,    72,    73,    77,    83,    84,
+      85,    89,    90,    94,    95,    96,   100,   101,   102,   106,
+     107,   111,   112,   113,   114,   115,   119,   124,   125,   129,
+     134,   135,   136,   141,   146,   147,   152
+  };
+
+  void
+  parser::yy_stack_print_ () const
   {
     *yycdebug_ << "Stack now";
-    for (stack_type::const_iterator i = yystack_.begin(), i_end = yystack_.end();
-         i != i_end;
-         ++i)
-      *yycdebug_ << ' ' << int(i->state);
+    for (stack_type::const_iterator
+           i = yystack_.begin (),
+           i_end = yystack_.end ();
+         i != i_end; ++i)
+      *yycdebug_ << ' ' << int (i->state);
     *yycdebug_ << '\n';
   }
 
-  void parser::yy_reduce_print_(int yyrule) const
+  void
+  parser::yy_reduce_print_ (int yyrule) const
   {
     int yylno = yyrline_[yyrule];
     int yynrhs = yyr2_[yyrule];
     // Print the symbols being reduced, and their result.
-    *yycdebug_ << "Reducing stack by rule " << yyrule - 1 << " (line " << yylno << "):\n";
+    *yycdebug_ << "Reducing stack by rule " << yyrule - 1
+               << " (line " << yylno << "):\n";
     // The symbols being reduced.
     for (int yyi = 0; yyi < yynrhs; yyi++)
-      YY_SYMBOL_PRINT("   $" << yyi + 1 << " =", yystack_[(yynrhs) - (yyi + 1)]);
+      YY_SYMBOL_PRINT ("   $" << yyi + 1 << " =",
+                       yystack_[(yynrhs) - (yyi + 1)]);
   }
 #endif // YYDEBUG
 
-} // namespace yy
 
-#line 1363 "./parser/bison_parser.cpp"
+} // yy
+#line 1362 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.cpp"
+
diff --git a/compiler/parser/bison_parser.hpp b/compiler/parser/bison_parser.hpp
index 9cd213e..cf1531b 100644
--- a/compiler/parser/bison_parser.hpp
+++ b/compiler/parser/bison_parser.hpp
@@ -30,8 +30,9 @@
 // This special exception was added by the Free Software Foundation in
 // version 2.2 of Bison.
 
+
 /**
- ** \file ./parser/bison_parser.hpp
+ ** \file /home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.hpp
  ** Define the yy::parser class.
  */
 
@@ -41,336 +42,401 @@
 // especially those whose name start with YY_ or yy_.  They are
 // private implementation details that can be changed or removed.
 
-#ifndef YY_YY_PARSER_BISON_PARSER_HPP_INCLUDED
-#define YY_YY_PARSER_BISON_PARSER_HPP_INCLUDED
+#ifndef YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_BISON_PARSER_HPP_INCLUDED
+# define YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_BISON_PARSER_HPP_INCLUDED
 // "%code requires" blocks.
-#line 1 "./parser/parser.y"
+#line 12 "/home/muqiu/Workspace/Swallow/compiler/parser/parser.y"
+
+    #include "ast/ast.hpp"
+    using namespace swallow::compiler::ast;
+    using namespace swallow::compiler;
 
-#include "ast/ast.hpp"
-using namespace swallow::compiler::ast;
-using namespace swallow::compiler;
+#line 55 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.hpp"
 
-#line 55 "./parser/bison_parser.hpp"
 
-#include <cstdlib> // std::abort
-#include <iostream>
-#include <stdexcept>
-#include <string>
-#include <vector>
+# include <cstdlib> // std::abort
+# include <iostream>
+# include <stdexcept>
+# include <string>
+# include <vector>
 
 #if defined __cplusplus
-#define YY_CPLUSPLUS __cplusplus
+# define YY_CPLUSPLUS __cplusplus
 #else
-#define YY_CPLUSPLUS 199711L
+# define YY_CPLUSPLUS 199711L
 #endif
 
 // Support move semantics when possible.
 #if 201103L <= YY_CPLUSPLUS
-#define YY_MOVE           std::move
-#define YY_MOVE_OR_COPY   move
-#define YY_MOVE_REF(Type) Type&&
-#define YY_RVREF(Type)    Type&&
-#define YY_COPY(Type)     Type
+# define YY_MOVE           std::move
+# define YY_MOVE_OR_COPY   move
+# define YY_MOVE_REF(Type) Type&&
+# define YY_RVREF(Type)    Type&&
+# define YY_COPY(Type)     Type
 #else
-#define YY_MOVE
-#define YY_MOVE_OR_COPY   copy
-#define YY_MOVE_REF(Type) Type&
-#define YY_RVREF(Type)    const Type&
-#define YY_COPY(Type)     const Type&
+# define YY_MOVE
+# define YY_MOVE_OR_COPY   copy
+# define YY_MOVE_REF(Type) Type&
+# define YY_RVREF(Type)    const Type&
+# define YY_COPY(Type)     const Type&
 #endif
 
 // Support noexcept when possible.
 #if 201103L <= YY_CPLUSPLUS
-#define YY_NOEXCEPT noexcept
-#define YY_NOTHROW
+# define YY_NOEXCEPT noexcept
+# define YY_NOTHROW
 #else
-#define YY_NOEXCEPT
-#define YY_NOTHROW throw()
+# define YY_NOEXCEPT
+# define YY_NOTHROW throw ()
 #endif
 
 // Support constexpr when possible.
 #if 201703 <= YY_CPLUSPLUS
-#define YY_CONSTEXPR constexpr
+# define YY_CONSTEXPR constexpr
 #else
-#define YY_CONSTEXPR
+# define YY_CONSTEXPR
 #endif
-#include "location.hh"
+# include "location.hh"
+
 
 #ifndef YY_ATTRIBUTE_PURE
-#if defined __GNUC__ && 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
-#define YY_ATTRIBUTE_PURE __attribute__((__pure__))
-#else
-#define YY_ATTRIBUTE_PURE
-#endif
+# if defined __GNUC__ && 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
+#  define YY_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define YY_ATTRIBUTE_PURE
+# endif
 #endif
 
 #ifndef YY_ATTRIBUTE_UNUSED
-#if defined __GNUC__ && 2 < __GNUC__ + (7 <= __GNUC_MINOR__)
-#define YY_ATTRIBUTE_UNUSED __attribute__((__unused__))
-#else
-#define YY_ATTRIBUTE_UNUSED
-#endif
+# if defined __GNUC__ && 2 < __GNUC__ + (7 <= __GNUC_MINOR__)
+#  define YY_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+# else
+#  define YY_ATTRIBUTE_UNUSED
+# endif
 #endif
 
 /* Suppress unused-variable warnings by "using" E.  */
-#if !defined lint || defined __GNUC__
-#define YY_USE(E) ((void) (E))
+#if ! defined lint || defined __GNUC__
+# define YY_USE(E) ((void) (E))
 #else
-#define YY_USE(E) /* empty */
+# define YY_USE(E) /* empty */
 #endif
 
 /* Suppress an incorrect diagnostic about yylval being uninitialized.  */
-#if defined __GNUC__ && !defined __ICC && 406 <= __GNUC__ * 100 + __GNUC_MINOR__
-#if __GNUC__ * 100 + __GNUC_MINOR__ < 407
-#define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                                              \
-  _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wuninitialized\"")
+#if defined __GNUC__ && ! defined __ICC && 406 <= __GNUC__ * 100 + __GNUC_MINOR__
+# if __GNUC__ * 100 + __GNUC_MINOR__ < 407
+#  define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                           \
+    _Pragma ("GCC diagnostic push")                                     \
+    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")
+# else
+#  define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                           \
+    _Pragma ("GCC diagnostic push")                                     \
+    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")              \
+    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
+# endif
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END      \
+    _Pragma ("GCC diagnostic pop")
 #else
-#define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                                              \
-  _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wuninitialized\"")   \
-    _Pragma("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
-#endif
-#define YY_IGNORE_MAYBE_UNINITIALIZED_END _Pragma("GCC diagnostic pop")
-#else
-#define YY_INITIAL_VALUE(Value) Value
+# define YY_INITIAL_VALUE(Value) Value
 #endif
 #ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-#define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-#define YY_IGNORE_MAYBE_UNINITIALIZED_END
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END
 #endif
 #ifndef YY_INITIAL_VALUE
-#define YY_INITIAL_VALUE(Value) /* Nothing. */
+# define YY_INITIAL_VALUE(Value) /* Nothing. */
 #endif
 
-#if defined __cplusplus && defined __GNUC__ && !defined __ICC && 6 <= __GNUC__
-#define YY_IGNORE_USELESS_CAST_BEGIN                                                     \
-  _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wuseless-cast\"")
-#define YY_IGNORE_USELESS_CAST_END _Pragma("GCC diagnostic pop")
+#if defined __cplusplus && defined __GNUC__ && ! defined __ICC && 6 <= __GNUC__
+# define YY_IGNORE_USELESS_CAST_BEGIN                          \
+    _Pragma ("GCC diagnostic push")                            \
+    _Pragma ("GCC diagnostic ignored \"-Wuseless-cast\"")
+# define YY_IGNORE_USELESS_CAST_END            \
+    _Pragma ("GCC diagnostic pop")
 #endif
 #ifndef YY_IGNORE_USELESS_CAST_BEGIN
-#define YY_IGNORE_USELESS_CAST_BEGIN
-#define YY_IGNORE_USELESS_CAST_END
-#endif
-
-#ifndef YY_CAST
-#ifdef __cplusplus
-#define YY_CAST(Type, Val)             static_cast<Type>(Val)
-#define YY_REINTERPRET_CAST(Type, Val) reinterpret_cast<Type>(Val)
-#else
-#define YY_CAST(Type, Val)             ((Type) (Val))
-#define YY_REINTERPRET_CAST(Type, Val) ((Type) (Val))
-#endif
-#endif
-#ifndef YY_NULLPTR
-#if defined __cplusplus
-#if 201103L <= __cplusplus
-#define YY_NULLPTR nullptr
-#else
-#define YY_NULLPTR 0
-#endif
-#else
-#define YY_NULLPTR ((void*) 0)
-#endif
-#endif
+# define YY_IGNORE_USELESS_CAST_BEGIN
+# define YY_IGNORE_USELESS_CAST_END
+#endif
+
+# ifndef YY_CAST
+#  ifdef __cplusplus
+#   define YY_CAST(Type, Val) static_cast<Type> (Val)
+#   define YY_REINTERPRET_CAST(Type, Val) reinterpret_cast<Type> (Val)
+#  else
+#   define YY_CAST(Type, Val) ((Type) (Val))
+#   define YY_REINTERPRET_CAST(Type, Val) ((Type) (Val))
+#  endif
+# endif
+# ifndef YY_NULLPTR
+#  if defined __cplusplus
+#   if 201103L <= __cplusplus
+#    define YY_NULLPTR nullptr
+#   else
+#    define YY_NULLPTR 0
+#   endif
+#  else
+#   define YY_NULLPTR ((void*)0)
+#  endif
+# endif
 
 /* Debug traces.  */
 #ifndef YYDEBUG
-#define YYDEBUG 0
+# define YYDEBUG 0
 #endif
 
-namespace yy
-{
-#line 190 "./parser/bison_parser.hpp"
+namespace yy {
+#line 190 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.hpp"
+
+
+
 
   /// A Bison parser.
   class parser
   {
   public:
 #ifdef YYSTYPE
-#ifdef __GNUC__
-#pragma GCC message "bison: do not #define YYSTYPE in C++, use %define api.value.type"
-#endif
+# ifdef __GNUC__
+#  pragma GCC message "bison: do not #define YYSTYPE in C++, use %define api.value.type"
+# endif
     typedef YYSTYPE value_type;
 #else
-    /// A buffer to store and retrieve objects.
-    ///
-    /// Sort of a variant, but does not keep track of the nature
-    /// of the stored data, since that knowledge is available
-    /// via the current parser state.
-    class value_type
-    {
-    public:
-      /// Type of *this.
-      typedef value_type self_type;
+  /// A buffer to store and retrieve objects.
+  ///
+  /// Sort of a variant, but does not keep track of the nature
+  /// of the stored data, since that knowledge is available
+  /// via the current parser state.
+  class value_type
+  {
+  public:
+    /// Type of *this.
+    typedef value_type self_type;
 
-      /// Empty construction.
-      value_type() YY_NOEXCEPT : yyraw_() {}
+    /// Empty construction.
+    value_type () YY_NOEXCEPT
+      : yyraw_ ()
+    {}
 
-      /// Construct and fill.
-      template <typename T> value_type(YY_RVREF(T) t) { new (yyas_<T>()) T(YY_MOVE(t)); }
+    /// Construct and fill.
+    template <typename T>
+    value_type (YY_RVREF (T) t)
+    {
+      new (yyas_<T> ()) T (YY_MOVE (t));
+    }
 
 #if 201103L <= YY_CPLUSPLUS
-      /// Non copyable.
-      value_type(const self_type&) = delete;
-      /// Non copyable.
-      self_type& operator=(const self_type&) = delete;
+    /// Non copyable.
+    value_type (const self_type&) = delete;
+    /// Non copyable.
+    self_type& operator= (const self_type&) = delete;
 #endif
 
-      /// Destruction, allowed only if empty.
-      ~value_type() YY_NOEXCEPT {}
+    /// Destruction, allowed only if empty.
+    ~value_type () YY_NOEXCEPT
+    {}
 
-#if 201103L <= YY_CPLUSPLUS
-      /// Instantiate a \a T in here from \a t.
-      template <typename T, typename... U> T& emplace(U&&... u)
-      {
-        return *new (yyas_<T>()) T(std::forward<U>(u)...);
-      }
-#else
-      /// Instantiate an empty \a T in here.
-      template <typename T> T& emplace() { return *new (yyas_<T>()) T(); }
+# if 201103L <= YY_CPLUSPLUS
+    /// Instantiate a \a T in here from \a t.
+    template <typename T, typename... U>
+    T&
+    emplace (U&&... u)
+    {
+      return *new (yyas_<T> ()) T (std::forward <U>(u)...);
+    }
+# else
+    /// Instantiate an empty \a T in here.
+    template <typename T>
+    T&
+    emplace ()
+    {
+      return *new (yyas_<T> ()) T ();
+    }
 
-      /// Instantiate a \a T in here from \a t.
-      template <typename T> T& emplace(const T& t) { return *new (yyas_<T>()) T(t); }
-#endif
+    /// Instantiate a \a T in here from \a t.
+    template <typename T>
+    T&
+    emplace (const T& t)
+    {
+      return *new (yyas_<T> ()) T (t);
+    }
+# endif
 
-      /// Instantiate an empty \a T in here.
-      /// Obsolete, use emplace.
-      template <typename T> T& build() { return emplace<T>(); }
+    /// Instantiate an empty \a T in here.
+    /// Obsolete, use emplace.
+    template <typename T>
+    T&
+    build ()
+    {
+      return emplace<T> ();
+    }
 
-      /// Instantiate a \a T in here from \a t.
-      /// Obsolete, use emplace.
-      template <typename T> T& build(const T& t) { return emplace<T>(t); }
+    /// Instantiate a \a T in here from \a t.
+    /// Obsolete, use emplace.
+    template <typename T>
+    T&
+    build (const T& t)
+    {
+      return emplace<T> (t);
+    }
 
-      /// Accessor to a built \a T.
-      template <typename T> T& as() YY_NOEXCEPT { return *yyas_<T>(); }
+    /// Accessor to a built \a T.
+    template <typename T>
+    T&
+    as () YY_NOEXCEPT
+    {
+      return *yyas_<T> ();
+    }
 
-      /// Const accessor to a built \a T (for %printer).
-      template <typename T> const T& as() const YY_NOEXCEPT { return *yyas_<T>(); }
+    /// Const accessor to a built \a T (for %printer).
+    template <typename T>
+    const T&
+    as () const YY_NOEXCEPT
+    {
+      return *yyas_<T> ();
+    }
 
-      /// Swap the content with \a that, of same type.
-      ///
-      /// Both variants must be built beforehand, because swapping the actual
-      /// data requires reading it (with as()), and this is not possible on
-      /// unconstructed variants: it would require some dynamic testing, which
-      /// should not be the variant's responsibility.
-      /// Swapping between built and (possibly) non-built is done with
-      /// self_type::move ().
-      template <typename T> void swap(self_type& that) YY_NOEXCEPT
-      {
-        std::swap(as<T>(), that.as<T>());
-      }
+    /// Swap the content with \a that, of same type.
+    ///
+    /// Both variants must be built beforehand, because swapping the actual
+    /// data requires reading it (with as()), and this is not possible on
+    /// unconstructed variants: it would require some dynamic testing, which
+    /// should not be the variant's responsibility.
+    /// Swapping between built and (possibly) non-built is done with
+    /// self_type::move ().
+    template <typename T>
+    void
+    swap (self_type& that) YY_NOEXCEPT
+    {
+      std::swap (as<T> (), that.as<T> ());
+    }
 
-      /// Move the content of \a that to this.
-      ///
-      /// Destroys \a that.
-      template <typename T> void move(self_type& that)
-      {
-#if 201103L <= YY_CPLUSPLUS
-        emplace<T>(std::move(that.as<T>()));
-#else
-        emplace<T>();
-        swap<T>(that);
-#endif
-        that.destroy<T>();
-      }
+    /// Move the content of \a that to this.
+    ///
+    /// Destroys \a that.
+    template <typename T>
+    void
+    move (self_type& that)
+    {
+# if 201103L <= YY_CPLUSPLUS
+      emplace<T> (std::move (that.as<T> ()));
+# else
+      emplace<T> ();
+      swap<T> (that);
+# endif
+      that.destroy<T> ();
+    }
 
-#if 201103L <= YY_CPLUSPLUS
-      /// Move the content of \a that to this.
-      template <typename T> void move(self_type&& that)
-      {
-        emplace<T>(std::move(that.as<T>()));
-        that.destroy<T>();
-      }
+# if 201103L <= YY_CPLUSPLUS
+    /// Move the content of \a that to this.
+    template <typename T>
+    void
+    move (self_type&& that)
+    {
+      emplace<T> (std::move (that.as<T> ()));
+      that.destroy<T> ();
+    }
 #endif
 
-      /// Copy the content of \a that to this.
-      template <typename T> void copy(const self_type& that) { emplace<T>(that.as<T>()); }
+    /// Copy the content of \a that to this.
+    template <typename T>
+    void
+    copy (const self_type& that)
+    {
+      emplace<T> (that.as<T> ());
+    }
 
-      /// Destroy the stored \a T.
-      template <typename T> void destroy() { as<T>().~T(); }
+    /// Destroy the stored \a T.
+    template <typename T>
+    void
+    destroy ()
+    {
+      as<T> ().~T ();
+    }
 
-    private:
+  private:
 #if YY_CPLUSPLUS < 201103L
-      /// Non copyable.
-      value_type(const self_type&);
-      /// Non copyable.
-      self_type& operator=(const self_type&);
+    /// Non copyable.
+    value_type (const self_type&);
+    /// Non copyable.
+    self_type& operator= (const self_type&);
 #endif
 
-      /// Accessor to raw memory as \a T.
-      template <typename T> T* yyas_() YY_NOEXCEPT
-      {
-        void* yyp = yyraw_;
-        return static_cast<T*>(yyp);
-      }
-
-      /// Const accessor to raw memory as \a T.
-      template <typename T> const T* yyas_() const YY_NOEXCEPT
-      {
-        const void* yyp = yyraw_;
-        return static_cast<const T*>(yyp);
-      }
+    /// Accessor to raw memory as \a T.
+    template <typename T>
+    T*
+    yyas_ () YY_NOEXCEPT
+    {
+      void *yyp = yyraw_;
+      return static_cast<T*> (yyp);
+     }
+
+    /// Const accessor to raw memory as \a T.
+    template <typename T>
+    const T*
+    yyas_ () const YY_NOEXCEPT
+    {
+      const void *yyp = yyraw_;
+      return static_cast<const T*> (yyp);
+     }
 
-      /// An auxiliary type to compute the largest semantic type.
-      union union_type
-      {
-        // Add
-        // Mul
-        // Application
-        // ApplicationBase
-        // Match
-        char dummy1[sizeof(AST::Ptr)];
+    /// An auxiliary type to compute the largest semantic type.
+    union union_type
+    {
+      // Add
+      // Mul
+      // Application
+      // ApplicationBase
+      // Match
+      char dummy1[sizeof (AST::Ptr)];
 
-        // Branch
-        char dummy2[sizeof(Branch::Ptr)];
+      // Branch
+      char dummy2[sizeof (Branch::Ptr)];
 
-        // Constructor
-        char dummy3[sizeof(Constructor::Ptr)];
+      // Constructor
+      char dummy3[sizeof (Constructor::Ptr)];
 
-        // Definition
-        // Fn
-        // Data
-        char dummy4[sizeof(Definition::Ptr)];
+      // Definition
+      // Fn
+      // Data
+      char dummy4[sizeof (Definition::Ptr)];
 
-        // Pattern
-        char dummy5[sizeof(Pattern::Ptr)];
+      // Pattern
+      char dummy5[sizeof (Pattern::Ptr)];
 
-        // INT
-        char dummy6[sizeof(int)];
+      // INT
+      char dummy6[sizeof (int)];
 
-        // LID
-        // UID
-        char dummy7[sizeof(std::string)];
+      // LID
+      // UID
+      char dummy7[sizeof (std::string)];
 
-        // Branches
-        char dummy8[sizeof(std::vector<Branch::Ptr>)];
+      // Branches
+      char dummy8[sizeof (std::vector<Branch::Ptr>)];
 
-        // Constructors
-        char dummy9[sizeof(std::vector<Constructor::Ptr>)];
+      // Constructors
+      char dummy9[sizeof (std::vector<Constructor::Ptr>)];
 
-        // Program
-        // Definitions
-        char dummy10[sizeof(std::vector<Definition::Ptr>)];
+      // Program
+      // Definitions
+      char dummy10[sizeof (std::vector<Definition::Ptr>)];
 
-        // LowercaseParams
-        // UppercaseParams
-        char dummy11[sizeof(std::vector<std::string>)];
-      };
+      // LowercaseParams
+      // UppercaseParams
+      char dummy11[sizeof (std::vector<std::string>)];
+    };
 
-      /// The size of the largest semantic type.
-      enum
-      {
-        size = sizeof(union_type)
-      };
+    /// The size of the largest semantic type.
+    enum { size = sizeof (union_type) };
 
-      /// A buffer to store semantic values.
-      union
-      {
-        /// Strongest alignment constraints.
-        long double yyalign_me_;
-        /// A buffer large enough to store any of the semantic values.
-        char yyraw_[size];
-      };
+    /// A buffer to store semantic values.
+    union
+    {
+      /// Strongest alignment constraints.
+      long double yyalign_me_;
+      /// A buffer large enough to store any of the semantic values.
+      char yyraw_[size];
     };
+  };
 
 #endif
     /// Backward compatibility (Bison 3.8).
@@ -382,15 +448,17 @@ namespace yy
     /// Syntax errors thrown from user actions.
     struct syntax_error : std::runtime_error
     {
-      syntax_error(const location_type& l, const std::string& m)
-        : std::runtime_error(m), location(l)
+      syntax_error (const location_type& l, const std::string& m)
+        : std::runtime_error (m)
+        , location (l)
       {}
 
-      syntax_error(const syntax_error& s)
-        : std::runtime_error(s.what()), location(s.location)
+      syntax_error (const syntax_error& s)
+        : std::runtime_error (s.what ())
+        , location (s.location)
       {}
 
-      ~syntax_error() YY_NOEXCEPT YY_NOTHROW;
+      ~syntax_error () YY_NOEXCEPT YY_NOTHROW;
 
       location_type location;
     };
@@ -401,34 +469,33 @@ namespace yy
       enum token_kind_type
       {
         YYEMPTY = -2,
-        END = 0,           // "end of file"
-        YYerror = 256,     // error
-        YYUNDEF = 257,     // "invalid token"
-        PLUS = 258,        // PLUS
-        TIMES = 259,       // TIMES
-        MINUS = 260,       // MINUS
-        DIVIDE = 261,      // DIVIDE
-        INT = 262,         // INT
-        FN = 263,          // FN
-        DATA = 264,        // DATA
-        MATCH = 265,       // MATCH
-        WITH = 266,        // WITH
-        OCURLY = 267,      // OCURLY
-        CCURLY = 268,      // CCURLY
-        OPAREN = 269,      // OPAREN
-        CPAREN = 270,      // CPAREN
-        OBRACKET = 271,    // OBRACKET
-        CBRACKET = 272,    // CBRACKET
-        COMMA = 273,       // COMMA
-        ARROW = 274,       // ARROW
-        VERTIAL = 275,     // VERTIAL
-        SEMICOLON = 276,   // SEMICOLON
-        DOUBLEARROW = 277, // DOUBLEARROW
-        EQUAL = 278,       // EQUAL
-        LID = 279,         // LID
-        UID = 280          // UID
+    END = 0,                       // "end of file"
+    YYerror = 256,                 // error
+    YYUNDEF = 257,                 // "invalid token"
+    PLUS = 258,                    // PLUS
+    TIMES = 259,                   // TIMES
+    MINUS = 260,                   // MINUS
+    DIVIDE = 261,                  // DIVIDE
+    INT = 262,                     // INT
+    FN = 263,                      // FN
+    DATA = 264,                    // DATA
+    MATCH = 265,                   // MATCH
+    WITH = 266,                    // WITH
+    OCURLY = 267,                  // OCURLY
+    CCURLY = 268,                  // CCURLY
+    OPAREN = 269,                  // OPAREN
+    CPAREN = 270,                  // CPAREN
+    OBRACKET = 271,                // OBRACKET
+    CBRACKET = 272,                // CBRACKET
+    COMMA = 273,                   // COMMA
+    ARROW = 274,                   // ARROW
+    VERTIAL = 275,                 // VERTIAL
+    SEMICOLON = 276,               // SEMICOLON
+    DOUBLEARROW = 277,             // DOUBLEARROW
+    EQUAL = 278,                   // EQUAL
+    LID = 279,                     // LID
+    UID = 280                      // UID
       };
-
       /// Backward compatibility alias (Bison 3.6).
       typedef token_kind_type yytokentype;
     };
@@ -446,50 +513,50 @@ namespace yy
       {
         YYNTOKENS = 26, ///< Number of tokens.
         S_YYEMPTY = -2,
-        S_YYEOF = 0,            // "end of file"
-        S_YYerror = 1,          // error
-        S_YYUNDEF = 2,          // "invalid token"
-        S_PLUS = 3,             // PLUS
-        S_TIMES = 4,            // TIMES
-        S_MINUS = 5,            // MINUS
-        S_DIVIDE = 6,           // DIVIDE
-        S_INT = 7,              // INT
-        S_FN = 8,               // FN
-        S_DATA = 9,             // DATA
-        S_MATCH = 10,           // MATCH
-        S_WITH = 11,            // WITH
-        S_OCURLY = 12,          // OCURLY
-        S_CCURLY = 13,          // CCURLY
-        S_OPAREN = 14,          // OPAREN
-        S_CPAREN = 15,          // CPAREN
-        S_OBRACKET = 16,        // OBRACKET
-        S_CBRACKET = 17,        // CBRACKET
-        S_COMMA = 18,           // COMMA
-        S_ARROW = 19,           // ARROW
-        S_VERTIAL = 20,         // VERTIAL
-        S_SEMICOLON = 21,       // SEMICOLON
-        S_DOUBLEARROW = 22,     // DOUBLEARROW
-        S_EQUAL = 23,           // EQUAL
-        S_LID = 24,             // LID
-        S_UID = 25,             // UID
-        S_YYACCEPT = 26,        // $accept
-        S_Program = 27,         // Program
-        S_Definitions = 28,     // Definitions
-        S_Definition = 29,      // Definition
-        S_Fn = 30,              // Fn
-        S_LowercaseParams = 31, // LowercaseParams
-        S_UppercaseParams = 32, // UppercaseParams
-        S_Add = 33,             // Add
-        S_Mul = 34,             // Mul
-        S_Application = 35,     // Application
-        S_ApplicationBase = 36, // ApplicationBase
-        S_Match = 37,           // Match
-        S_Branches = 38,        // Branches
-        S_Branch = 39,          // Branch
-        S_Pattern = 40,         // Pattern
-        S_Data = 41,            // Data
-        S_Constructors = 42,    // Constructors
-        S_Constructor = 43      // Constructor
+        S_YYEOF = 0,                             // "end of file"
+        S_YYerror = 1,                           // error
+        S_YYUNDEF = 2,                           // "invalid token"
+        S_PLUS = 3,                              // PLUS
+        S_TIMES = 4,                             // TIMES
+        S_MINUS = 5,                             // MINUS
+        S_DIVIDE = 6,                            // DIVIDE
+        S_INT = 7,                               // INT
+        S_FN = 8,                                // FN
+        S_DATA = 9,                              // DATA
+        S_MATCH = 10,                            // MATCH
+        S_WITH = 11,                             // WITH
+        S_OCURLY = 12,                           // OCURLY
+        S_CCURLY = 13,                           // CCURLY
+        S_OPAREN = 14,                           // OPAREN
+        S_CPAREN = 15,                           // CPAREN
+        S_OBRACKET = 16,                         // OBRACKET
+        S_CBRACKET = 17,                         // CBRACKET
+        S_COMMA = 18,                            // COMMA
+        S_ARROW = 19,                            // ARROW
+        S_VERTIAL = 20,                          // VERTIAL
+        S_SEMICOLON = 21,                        // SEMICOLON
+        S_DOUBLEARROW = 22,                      // DOUBLEARROW
+        S_EQUAL = 23,                            // EQUAL
+        S_LID = 24,                              // LID
+        S_UID = 25,                              // UID
+        S_YYACCEPT = 26,                         // $accept
+        S_Program = 27,                          // Program
+        S_Definitions = 28,                      // Definitions
+        S_Definition = 29,                       // Definition
+        S_Fn = 30,                               // Fn
+        S_LowercaseParams = 31,                  // LowercaseParams
+        S_UppercaseParams = 32,                  // UppercaseParams
+        S_Add = 33,                              // Add
+        S_Mul = 34,                              // Mul
+        S_Application = 35,                      // Application
+        S_ApplicationBase = 36,                  // ApplicationBase
+        S_Match = 37,                            // Match
+        S_Branches = 38,                         // Branches
+        S_Branch = 39,                           // Branch
+        S_Pattern = 40,                          // Pattern
+        S_Data = 41,                             // Data
+        S_Constructors = 42,                     // Constructors
+        S_Constructor = 43                       // Constructor
       };
     };
 
@@ -505,317 +572,358 @@ namespace yy
     /// via kind ().
     ///
     /// Provide access to semantic value and location.
-    template <typename Base> struct basic_symbol : Base
+    template <typename Base>
+    struct basic_symbol : Base
     {
       /// Alias to Base.
       typedef Base super_type;
 
       /// Default constructor.
-      basic_symbol() YY_NOEXCEPT : value(), location() {}
+      basic_symbol () YY_NOEXCEPT
+        : value ()
+        , location ()
+      {}
 
 #if 201103L <= YY_CPLUSPLUS
       /// Move constructor.
-      basic_symbol(basic_symbol&& that)
-        : Base(std::move(that)), value(), location(std::move(that.location))
-      {
-        switch (this->kind())
-          {
-          case symbol_kind::S_Add:             // Add
-          case symbol_kind::S_Mul:             // Mul
-          case symbol_kind::S_Application:     // Application
-          case symbol_kind::S_ApplicationBase: // ApplicationBase
-          case symbol_kind::S_Match:           // Match
-            value.move<AST::Ptr>(std::move(that.value));
-            break;
-
-          case symbol_kind::S_Branch: // Branch
-            value.move<Branch::Ptr>(std::move(that.value));
-            break;
-
-          case symbol_kind::S_Constructor: // Constructor
-            value.move<Constructor::Ptr>(std::move(that.value));
-            break;
-
-          case symbol_kind::S_Definition: // Definition
-          case symbol_kind::S_Fn:         // Fn
-          case symbol_kind::S_Data:       // Data
-            value.move<Definition::Ptr>(std::move(that.value));
-            break;
-
-          case symbol_kind::S_Pattern: // Pattern
-            value.move<Pattern::Ptr>(std::move(that.value));
-            break;
-
-          case symbol_kind::S_INT: // INT
-            value.move<int>(std::move(that.value));
-            break;
-
-          case symbol_kind::S_LID: // LID
-          case symbol_kind::S_UID: // UID
-            value.move<std::string>(std::move(that.value));
-            break;
-
-          case symbol_kind::S_Branches: // Branches
-            value.move<std::vector<Branch::Ptr> >(std::move(that.value));
-            break;
-
-          case symbol_kind::S_Constructors: // Constructors
-            value.move<std::vector<Constructor::Ptr> >(std::move(that.value));
-            break;
-
-          case symbol_kind::S_Program:     // Program
-          case symbol_kind::S_Definitions: // Definitions
-            value.move<std::vector<Definition::Ptr> >(std::move(that.value));
-            break;
-
-          case symbol_kind::S_LowercaseParams: // LowercaseParams
-          case symbol_kind::S_UppercaseParams: // UppercaseParams
-            value.move<std::vector<std::string> >(std::move(that.value));
-            break;
-
-          default:
-            break;
-          }
+      basic_symbol (basic_symbol&& that)
+        : Base (std::move (that))
+        , value ()
+        , location (std::move (that.location))
+      {
+        switch (this->kind ())
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
+      case symbol_kind::S_ApplicationBase: // ApplicationBase
+      case symbol_kind::S_Match: // Match
+        value.move< AST::Ptr > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_Branch: // Branch
+        value.move< Branch::Ptr > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_Constructor: // Constructor
+        value.move< Constructor::Ptr > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_Definition: // Definition
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.move< Definition::Ptr > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_Pattern: // Pattern
+        value.move< Pattern::Ptr > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_INT: // INT
+        value.move< int > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_LID: // LID
+      case symbol_kind::S_UID: // UID
+        value.move< std::string > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_Branches: // Branches
+        value.move< std::vector<Branch::Ptr> > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_Constructors: // Constructors
+        value.move< std::vector<Constructor::Ptr> > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_Program: // Program
+      case symbol_kind::S_Definitions: // Definitions
+        value.move< std::vector<Definition::Ptr> > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_LowercaseParams: // LowercaseParams
+      case symbol_kind::S_UppercaseParams: // UppercaseParams
+        value.move< std::vector<std::string> > (std::move (that.value));
+        break;
+
+      default:
+        break;
+    }
+
       }
 #endif
 
       /// Copy constructor.
-      basic_symbol(const basic_symbol& that);
+      basic_symbol (const basic_symbol& that);
 
       /// Constructors for typed symbols.
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, location_type&& l)
-        : Base(t), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, location_type&& l)
+        : Base (t)
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(typename Base::kind_type t, const location_type& l)
-        : Base(t), location(l)
+      basic_symbol (typename Base::kind_type t, const location_type& l)
+        : Base (t)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, AST::Ptr&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, AST::Ptr&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(typename Base::kind_type t, const AST::Ptr& v, const location_type& l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const AST::Ptr& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, Branch::Ptr&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, Branch::Ptr&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type t, const Branch::Ptr& v, const location_type& l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const Branch::Ptr& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, Constructor::Ptr&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, Constructor::Ptr&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type t, const Constructor::Ptr& v, const location_type& l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const Constructor::Ptr& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, Definition::Ptr&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, Definition::Ptr&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type t, const Definition::Ptr& v, const location_type& l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const Definition::Ptr& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, Pattern::Ptr&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, Pattern::Ptr&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type t, const Pattern::Ptr& v, const location_type& l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const Pattern::Ptr& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, int&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, int&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(typename Base::kind_type t, const int& v, const location_type& l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const int& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(typename Base::kind_type t, std::string&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, std::string&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type t, const std::string& v, const location_type& l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const std::string& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(
-        typename Base::kind_type t, std::vector<Branch::Ptr>&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, std::vector<Branch::Ptr>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type        t,
-        const std::vector<Branch::Ptr>& v,
-        const location_type&            l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const std::vector<Branch::Ptr>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(
-        typename Base::kind_type t, std::vector<Constructor::Ptr>&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, std::vector<Constructor::Ptr>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type             t,
-        const std::vector<Constructor::Ptr>& v,
-        const location_type&                 l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const std::vector<Constructor::Ptr>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(
-        typename Base::kind_type t, std::vector<Definition::Ptr>&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, std::vector<Definition::Ptr>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type            t,
-        const std::vector<Definition::Ptr>& v,
-        const location_type&                l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const std::vector<Definition::Ptr>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
 #if 201103L <= YY_CPLUSPLUS
-      basic_symbol(
-        typename Base::kind_type t, std::vector<std::string>&& v, location_type&& l)
-        : Base(t), value(std::move(v)), location(std::move(l))
+      basic_symbol (typename Base::kind_type t, std::vector<std::string>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
       {}
 #else
-      basic_symbol(
-        typename Base::kind_type        t,
-        const std::vector<std::string>& v,
-        const location_type&            l)
-        : Base(t), value(v), location(l)
+      basic_symbol (typename Base::kind_type t, const std::vector<std::string>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
       {}
 #endif
 
       /// Destroy the symbol.
-      ~basic_symbol() { clear(); }
+      ~basic_symbol ()
+      {
+        clear ();
+      }
+
+
 
       /// Destroy contents, and record that is empty.
-      void clear() YY_NOEXCEPT
+      void clear () YY_NOEXCEPT
       {
         // User destructor.
-        symbol_kind_type    yykind = this->kind();
+        symbol_kind_type yykind = this->kind ();
         basic_symbol<Base>& yysym = *this;
         (void) yysym;
         switch (yykind)
-          {
-          default:
-            break;
-          }
+        {
+       default:
+          break;
+        }
 
         // Value type destructor.
-        switch (yykind)
-          {
-          case symbol_kind::S_Add:             // Add
-          case symbol_kind::S_Mul:             // Mul
-          case symbol_kind::S_Application:     // Application
-          case symbol_kind::S_ApplicationBase: // ApplicationBase
-          case symbol_kind::S_Match:           // Match
-            value.template destroy<AST::Ptr>();
-            break;
-
-          case symbol_kind::S_Branch: // Branch
-            value.template destroy<Branch::Ptr>();
-            break;
-
-          case symbol_kind::S_Constructor: // Constructor
-            value.template destroy<Constructor::Ptr>();
-            break;
-
-          case symbol_kind::S_Definition: // Definition
-          case symbol_kind::S_Fn:         // Fn
-          case symbol_kind::S_Data:       // Data
-            value.template destroy<Definition::Ptr>();
-            break;
-
-          case symbol_kind::S_Pattern: // Pattern
-            value.template destroy<Pattern::Ptr>();
-            break;
-
-          case symbol_kind::S_INT: // INT
-            value.template destroy<int>();
-            break;
-
-          case symbol_kind::S_LID: // LID
-          case symbol_kind::S_UID: // UID
-            value.template destroy<std::string>();
-            break;
-
-          case symbol_kind::S_Branches: // Branches
-            value.template destroy<std::vector<Branch::Ptr> >();
-            break;
-
-          case symbol_kind::S_Constructors: // Constructors
-            value.template destroy<std::vector<Constructor::Ptr> >();
-            break;
-
-          case symbol_kind::S_Program:     // Program
-          case symbol_kind::S_Definitions: // Definitions
-            value.template destroy<std::vector<Definition::Ptr> >();
-            break;
-
-          case symbol_kind::S_LowercaseParams: // LowercaseParams
-          case symbol_kind::S_UppercaseParams: // UppercaseParams
-            value.template destroy<std::vector<std::string> >();
-            break;
-
-          default:
-            break;
-          }
-
-        Base::clear();
+switch (yykind)
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
+      case symbol_kind::S_ApplicationBase: // ApplicationBase
+      case symbol_kind::S_Match: // Match
+        value.template destroy< AST::Ptr > ();
+        break;
+
+      case symbol_kind::S_Branch: // Branch
+        value.template destroy< Branch::Ptr > ();
+        break;
+
+      case symbol_kind::S_Constructor: // Constructor
+        value.template destroy< Constructor::Ptr > ();
+        break;
+
+      case symbol_kind::S_Definition: // Definition
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.template destroy< Definition::Ptr > ();
+        break;
+
+      case symbol_kind::S_Pattern: // Pattern
+        value.template destroy< Pattern::Ptr > ();
+        break;
+
+      case symbol_kind::S_INT: // INT
+        value.template destroy< int > ();
+        break;
+
+      case symbol_kind::S_LID: // LID
+      case symbol_kind::S_UID: // UID
+        value.template destroy< std::string > ();
+        break;
+
+      case symbol_kind::S_Branches: // Branches
+        value.template destroy< std::vector<Branch::Ptr> > ();
+        break;
+
+      case symbol_kind::S_Constructors: // Constructors
+        value.template destroy< std::vector<Constructor::Ptr> > ();
+        break;
+
+      case symbol_kind::S_Program: // Program
+      case symbol_kind::S_Definitions: // Definitions
+        value.template destroy< std::vector<Definition::Ptr> > ();
+        break;
+
+      case symbol_kind::S_LowercaseParams: // LowercaseParams
+      case symbol_kind::S_UppercaseParams: // UppercaseParams
+        value.template destroy< std::vector<std::string> > ();
+        break;
+
+      default:
+        break;
+    }
+
+        Base::clear ();
       }
 
 #if YYDEBUG || 0
       /// The user-facing name of this symbol.
-      const char* name() const YY_NOEXCEPT { return parser::symbol_name(this->kind()); }
+      const char *name () const YY_NOEXCEPT
+      {
+        return parser::symbol_name (this->kind ());
+      }
 #endif // #if YYDEBUG || 0
 
+
       /// Backward compatibility (Bison 3.6).
-      symbol_kind_type type_get() const YY_NOEXCEPT;
+      symbol_kind_type type_get () const YY_NOEXCEPT;
 
       /// Whether empty.
-      bool empty() const YY_NOEXCEPT;
+      bool empty () const YY_NOEXCEPT;
 
       /// Destructive move, \a s is emptied into this.
-      void move(basic_symbol& s);
+      void move (basic_symbol& s);
 
       /// The semantic value.
       value_type value;
@@ -826,7 +934,7 @@ namespace yy
     private:
 #if YY_CPLUSPLUS < 201103L
       /// Assignment operator.
-      basic_symbol& operator=(const basic_symbol& that);
+      basic_symbol& operator= (const basic_symbol& that);
 #endif
     };
 
@@ -837,31 +945,33 @@ namespace yy
       typedef token_kind_type kind_type;
 
       /// Default constructor.
-      by_kind() YY_NOEXCEPT;
+      by_kind () YY_NOEXCEPT;
 
 #if 201103L <= YY_CPLUSPLUS
       /// Move constructor.
-      by_kind(by_kind&& that) YY_NOEXCEPT;
+      by_kind (by_kind&& that) YY_NOEXCEPT;
 #endif
 
       /// Copy constructor.
-      by_kind(const by_kind& that) YY_NOEXCEPT;
+      by_kind (const by_kind& that) YY_NOEXCEPT;
 
       /// Constructor from (external) token numbers.
-      by_kind(kind_type t) YY_NOEXCEPT;
+      by_kind (kind_type t) YY_NOEXCEPT;
+
+
 
       /// Record that this symbol is empty.
-      void clear() YY_NOEXCEPT;
+      void clear () YY_NOEXCEPT;
 
       /// Steal the symbol kind from \a that.
-      void move(by_kind& that);
+      void move (by_kind& that);
 
       /// The (internal) type number (corresponding to \a type).
       /// \a empty when empty.
-      symbol_kind_type kind() const YY_NOEXCEPT;
+      symbol_kind_type kind () const YY_NOEXCEPT;
 
       /// Backward compatibility (Bison 3.6).
-      symbol_kind_type type_get() const YY_NOEXCEPT;
+      symbol_kind_type type_get () const YY_NOEXCEPT;
 
       /// The symbol kind.
       /// \a S_YYEMPTY when empty.
@@ -878,392 +988,500 @@ namespace yy
       typedef basic_symbol<by_kind> super_type;
 
       /// Empty symbol.
-      symbol_type() YY_NOEXCEPT {}
+      symbol_type () YY_NOEXCEPT {}
 
       /// Constructor for valueless symbols, and symbols from each type.
 #if 201103L <= YY_CPLUSPLUS
-      symbol_type(int tok, location_type l)
-        : super_type(token_kind_type(tok), std::move(l))
+      symbol_type (int tok, location_type l)
+        : super_type (token_kind_type (tok), std::move (l))
 #else
-      symbol_type(int tok, const location_type& l) : super_type(token_kind_type(tok), l)
+      symbol_type (int tok, const location_type& l)
+        : super_type (token_kind_type (tok), l)
 #endif
       {}
 #if 201103L <= YY_CPLUSPLUS
-      symbol_type(int tok, int v, location_type l)
-        : super_type(token_kind_type(tok), std::move(v), std::move(l))
+      symbol_type (int tok, int v, location_type l)
+        : super_type (token_kind_type (tok), std::move (v), std::move (l))
 #else
-      symbol_type(int tok, const int& v, const location_type& l)
-        : super_type(token_kind_type(tok), v, l)
+      symbol_type (int tok, const int& v, const location_type& l)
+        : super_type (token_kind_type (tok), v, l)
 #endif
       {}
 #if 201103L <= YY_CPLUSPLUS
-      symbol_type(int tok, std::string v, location_type l)
-        : super_type(token_kind_type(tok), std::move(v), std::move(l))
+      symbol_type (int tok, std::string v, location_type l)
+        : super_type (token_kind_type (tok), std::move (v), std::move (l))
 #else
-      symbol_type(int tok, const std::string& v, const location_type& l)
-        : super_type(token_kind_type(tok), v, l)
+      symbol_type (int tok, const std::string& v, const location_type& l)
+        : super_type (token_kind_type (tok), v, l)
 #endif
       {}
     };
 
     /// Build a parser object.
-    parser();
-    virtual ~parser();
+    parser ();
+    virtual ~parser ();
 
 #if 201103L <= YY_CPLUSPLUS
     /// Non copyable.
-    parser(const parser&) = delete;
+    parser (const parser&) = delete;
     /// Non copyable.
-    parser& operator=(const parser&) = delete;
+    parser& operator= (const parser&) = delete;
 #endif
 
     /// Parse.  An alias for parse ().
     /// \returns  0 iff parsing succeeded.
-    int operator()();
+    int operator() ();
 
     /// Parse.
     /// \returns  0 iff parsing succeeded.
-    virtual int parse();
+    virtual int parse ();
 
 #if YYDEBUG
     /// The current debugging stream.
-    std::ostream& debug_stream() const YY_ATTRIBUTE_PURE;
+    std::ostream& debug_stream () const YY_ATTRIBUTE_PURE;
     /// Set the current debugging stream.
-    void set_debug_stream(std::ostream&);
+    void set_debug_stream (std::ostream &);
 
     /// Type for debugging levels.
     typedef int debug_level_type;
     /// The current debugging level.
-    debug_level_type debug_level() const YY_ATTRIBUTE_PURE;
+    debug_level_type debug_level () const YY_ATTRIBUTE_PURE;
     /// Set the current debugging level.
-    void set_debug_level(debug_level_type l);
+    void set_debug_level (debug_level_type l);
 #endif
 
     /// Report a syntax error.
     /// \param loc    where the syntax error is found.
     /// \param msg    a description of the syntax error.
-    virtual void error(const location_type& loc, const std::string& msg);
+    virtual void error (const location_type& loc, const std::string& msg);
 
     /// Report a syntax error.
-    void error(const syntax_error& err);
+    void error (const syntax_error& err);
 
 #if YYDEBUG || 0
     /// The user-facing name of the symbol whose (internal) number is
     /// YYSYMBOL.  No bounds checking.
-    static const char* symbol_name(symbol_kind_type yysymbol);
+    static const char *symbol_name (symbol_kind_type yysymbol);
 #endif // #if YYDEBUG || 0
 
+
     // Implementation of make_symbol for each token kind.
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_END(location_type l)
-    {
-      return symbol_type(token::END, std::move(l));
-    }
+      static
+      symbol_type
+      make_END (location_type l)
+      {
+        return symbol_type (token::END, std::move (l));
+      }
 #else
-    static symbol_type make_END(const location_type& l)
-    {
-      return symbol_type(token::END, l);
-    }
+      static
+      symbol_type
+      make_END (const location_type& l)
+      {
+        return symbol_type (token::END, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_YYerror(location_type l)
-    {
-      return symbol_type(token::YYerror, std::move(l));
-    }
+      static
+      symbol_type
+      make_YYerror (location_type l)
+      {
+        return symbol_type (token::YYerror, std::move (l));
+      }
 #else
-    static symbol_type make_YYerror(const location_type& l)
-    {
-      return symbol_type(token::YYerror, l);
-    }
+      static
+      symbol_type
+      make_YYerror (const location_type& l)
+      {
+        return symbol_type (token::YYerror, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_YYUNDEF(location_type l)
-    {
-      return symbol_type(token::YYUNDEF, std::move(l));
-    }
+      static
+      symbol_type
+      make_YYUNDEF (location_type l)
+      {
+        return symbol_type (token::YYUNDEF, std::move (l));
+      }
 #else
-    static symbol_type make_YYUNDEF(const location_type& l)
-    {
-      return symbol_type(token::YYUNDEF, l);
-    }
+      static
+      symbol_type
+      make_YYUNDEF (const location_type& l)
+      {
+        return symbol_type (token::YYUNDEF, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_PLUS(location_type l)
-    {
-      return symbol_type(token::PLUS, std::move(l));
-    }
+      static
+      symbol_type
+      make_PLUS (location_type l)
+      {
+        return symbol_type (token::PLUS, std::move (l));
+      }
 #else
-    static symbol_type make_PLUS(const location_type& l)
-    {
-      return symbol_type(token::PLUS, l);
-    }
+      static
+      symbol_type
+      make_PLUS (const location_type& l)
+      {
+        return symbol_type (token::PLUS, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_TIMES(location_type l)
-    {
-      return symbol_type(token::TIMES, std::move(l));
-    }
+      static
+      symbol_type
+      make_TIMES (location_type l)
+      {
+        return symbol_type (token::TIMES, std::move (l));
+      }
 #else
-    static symbol_type make_TIMES(const location_type& l)
-    {
-      return symbol_type(token::TIMES, l);
-    }
+      static
+      symbol_type
+      make_TIMES (const location_type& l)
+      {
+        return symbol_type (token::TIMES, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_MINUS(location_type l)
-    {
-      return symbol_type(token::MINUS, std::move(l));
-    }
+      static
+      symbol_type
+      make_MINUS (location_type l)
+      {
+        return symbol_type (token::MINUS, std::move (l));
+      }
 #else
-    static symbol_type make_MINUS(const location_type& l)
-    {
-      return symbol_type(token::MINUS, l);
-    }
+      static
+      symbol_type
+      make_MINUS (const location_type& l)
+      {
+        return symbol_type (token::MINUS, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_DIVIDE(location_type l)
-    {
-      return symbol_type(token::DIVIDE, std::move(l));
-    }
+      static
+      symbol_type
+      make_DIVIDE (location_type l)
+      {
+        return symbol_type (token::DIVIDE, std::move (l));
+      }
 #else
-    static symbol_type make_DIVIDE(const location_type& l)
-    {
-      return symbol_type(token::DIVIDE, l);
-    }
+      static
+      symbol_type
+      make_DIVIDE (const location_type& l)
+      {
+        return symbol_type (token::DIVIDE, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_INT(int v, location_type l)
-    {
-      return symbol_type(token::INT, std::move(v), std::move(l));
-    }
+      static
+      symbol_type
+      make_INT (int v, location_type l)
+      {
+        return symbol_type (token::INT, std::move (v), std::move (l));
+      }
 #else
-    static symbol_type make_INT(const int& v, const location_type& l)
-    {
-      return symbol_type(token::INT, v, l);
-    }
+      static
+      symbol_type
+      make_INT (const int& v, const location_type& l)
+      {
+        return symbol_type (token::INT, v, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_FN(location_type l)
-    {
-      return symbol_type(token::FN, std::move(l));
-    }
+      static
+      symbol_type
+      make_FN (location_type l)
+      {
+        return symbol_type (token::FN, std::move (l));
+      }
 #else
-    static symbol_type make_FN(const location_type& l)
-    {
-      return symbol_type(token::FN, l);
-    }
+      static
+      symbol_type
+      make_FN (const location_type& l)
+      {
+        return symbol_type (token::FN, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_DATA(location_type l)
-    {
-      return symbol_type(token::DATA, std::move(l));
-    }
+      static
+      symbol_type
+      make_DATA (location_type l)
+      {
+        return symbol_type (token::DATA, std::move (l));
+      }
 #else
-    static symbol_type make_DATA(const location_type& l)
-    {
-      return symbol_type(token::DATA, l);
-    }
+      static
+      symbol_type
+      make_DATA (const location_type& l)
+      {
+        return symbol_type (token::DATA, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_MATCH(location_type l)
-    {
-      return symbol_type(token::MATCH, std::move(l));
-    }
+      static
+      symbol_type
+      make_MATCH (location_type l)
+      {
+        return symbol_type (token::MATCH, std::move (l));
+      }
 #else
-    static symbol_type make_MATCH(const location_type& l)
-    {
-      return symbol_type(token::MATCH, l);
-    }
+      static
+      symbol_type
+      make_MATCH (const location_type& l)
+      {
+        return symbol_type (token::MATCH, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_WITH(location_type l)
-    {
-      return symbol_type(token::WITH, std::move(l));
-    }
+      static
+      symbol_type
+      make_WITH (location_type l)
+      {
+        return symbol_type (token::WITH, std::move (l));
+      }
 #else
-    static symbol_type make_WITH(const location_type& l)
-    {
-      return symbol_type(token::WITH, l);
-    }
+      static
+      symbol_type
+      make_WITH (const location_type& l)
+      {
+        return symbol_type (token::WITH, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_OCURLY(location_type l)
-    {
-      return symbol_type(token::OCURLY, std::move(l));
-    }
+      static
+      symbol_type
+      make_OCURLY (location_type l)
+      {
+        return symbol_type (token::OCURLY, std::move (l));
+      }
 #else
-    static symbol_type make_OCURLY(const location_type& l)
-    {
-      return symbol_type(token::OCURLY, l);
-    }
+      static
+      symbol_type
+      make_OCURLY (const location_type& l)
+      {
+        return symbol_type (token::OCURLY, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_CCURLY(location_type l)
-    {
-      return symbol_type(token::CCURLY, std::move(l));
-    }
+      static
+      symbol_type
+      make_CCURLY (location_type l)
+      {
+        return symbol_type (token::CCURLY, std::move (l));
+      }
 #else
-    static symbol_type make_CCURLY(const location_type& l)
-    {
-      return symbol_type(token::CCURLY, l);
-    }
+      static
+      symbol_type
+      make_CCURLY (const location_type& l)
+      {
+        return symbol_type (token::CCURLY, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_OPAREN(location_type l)
-    {
-      return symbol_type(token::OPAREN, std::move(l));
-    }
+      static
+      symbol_type
+      make_OPAREN (location_type l)
+      {
+        return symbol_type (token::OPAREN, std::move (l));
+      }
 #else
-    static symbol_type make_OPAREN(const location_type& l)
-    {
-      return symbol_type(token::OPAREN, l);
-    }
+      static
+      symbol_type
+      make_OPAREN (const location_type& l)
+      {
+        return symbol_type (token::OPAREN, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_CPAREN(location_type l)
-    {
-      return symbol_type(token::CPAREN, std::move(l));
-    }
+      static
+      symbol_type
+      make_CPAREN (location_type l)
+      {
+        return symbol_type (token::CPAREN, std::move (l));
+      }
 #else
-    static symbol_type make_CPAREN(const location_type& l)
-    {
-      return symbol_type(token::CPAREN, l);
-    }
+      static
+      symbol_type
+      make_CPAREN (const location_type& l)
+      {
+        return symbol_type (token::CPAREN, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_OBRACKET(location_type l)
-    {
-      return symbol_type(token::OBRACKET, std::move(l));
-    }
+      static
+      symbol_type
+      make_OBRACKET (location_type l)
+      {
+        return symbol_type (token::OBRACKET, std::move (l));
+      }
 #else
-    static symbol_type make_OBRACKET(const location_type& l)
-    {
-      return symbol_type(token::OBRACKET, l);
-    }
+      static
+      symbol_type
+      make_OBRACKET (const location_type& l)
+      {
+        return symbol_type (token::OBRACKET, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_CBRACKET(location_type l)
-    {
-      return symbol_type(token::CBRACKET, std::move(l));
-    }
+      static
+      symbol_type
+      make_CBRACKET (location_type l)
+      {
+        return symbol_type (token::CBRACKET, std::move (l));
+      }
 #else
-    static symbol_type make_CBRACKET(const location_type& l)
-    {
-      return symbol_type(token::CBRACKET, l);
-    }
+      static
+      symbol_type
+      make_CBRACKET (const location_type& l)
+      {
+        return symbol_type (token::CBRACKET, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_COMMA(location_type l)
-    {
-      return symbol_type(token::COMMA, std::move(l));
-    }
+      static
+      symbol_type
+      make_COMMA (location_type l)
+      {
+        return symbol_type (token::COMMA, std::move (l));
+      }
 #else
-    static symbol_type make_COMMA(const location_type& l)
-    {
-      return symbol_type(token::COMMA, l);
-    }
+      static
+      symbol_type
+      make_COMMA (const location_type& l)
+      {
+        return symbol_type (token::COMMA, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_ARROW(location_type l)
-    {
-      return symbol_type(token::ARROW, std::move(l));
-    }
+      static
+      symbol_type
+      make_ARROW (location_type l)
+      {
+        return symbol_type (token::ARROW, std::move (l));
+      }
 #else
-    static symbol_type make_ARROW(const location_type& l)
-    {
-      return symbol_type(token::ARROW, l);
-    }
+      static
+      symbol_type
+      make_ARROW (const location_type& l)
+      {
+        return symbol_type (token::ARROW, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_VERTIAL(location_type l)
-    {
-      return symbol_type(token::VERTIAL, std::move(l));
-    }
+      static
+      symbol_type
+      make_VERTIAL (location_type l)
+      {
+        return symbol_type (token::VERTIAL, std::move (l));
+      }
 #else
-    static symbol_type make_VERTIAL(const location_type& l)
-    {
-      return symbol_type(token::VERTIAL, l);
-    }
+      static
+      symbol_type
+      make_VERTIAL (const location_type& l)
+      {
+        return symbol_type (token::VERTIAL, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_SEMICOLON(location_type l)
-    {
-      return symbol_type(token::SEMICOLON, std::move(l));
-    }
+      static
+      symbol_type
+      make_SEMICOLON (location_type l)
+      {
+        return symbol_type (token::SEMICOLON, std::move (l));
+      }
 #else
-    static symbol_type make_SEMICOLON(const location_type& l)
-    {
-      return symbol_type(token::SEMICOLON, l);
-    }
+      static
+      symbol_type
+      make_SEMICOLON (const location_type& l)
+      {
+        return symbol_type (token::SEMICOLON, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_DOUBLEARROW(location_type l)
-    {
-      return symbol_type(token::DOUBLEARROW, std::move(l));
-    }
+      static
+      symbol_type
+      make_DOUBLEARROW (location_type l)
+      {
+        return symbol_type (token::DOUBLEARROW, std::move (l));
+      }
 #else
-    static symbol_type make_DOUBLEARROW(const location_type& l)
-    {
-      return symbol_type(token::DOUBLEARROW, l);
-    }
+      static
+      symbol_type
+      make_DOUBLEARROW (const location_type& l)
+      {
+        return symbol_type (token::DOUBLEARROW, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_EQUAL(location_type l)
-    {
-      return symbol_type(token::EQUAL, std::move(l));
-    }
+      static
+      symbol_type
+      make_EQUAL (location_type l)
+      {
+        return symbol_type (token::EQUAL, std::move (l));
+      }
 #else
-    static symbol_type make_EQUAL(const location_type& l)
-    {
-      return symbol_type(token::EQUAL, l);
-    }
+      static
+      symbol_type
+      make_EQUAL (const location_type& l)
+      {
+        return symbol_type (token::EQUAL, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_LID(std::string v, location_type l)
-    {
-      return symbol_type(token::LID, std::move(v), std::move(l));
-    }
+      static
+      symbol_type
+      make_LID (std::string v, location_type l)
+      {
+        return symbol_type (token::LID, std::move (v), std::move (l));
+      }
 #else
-    static symbol_type make_LID(const std::string& v, const location_type& l)
-    {
-      return symbol_type(token::LID, v, l);
-    }
+      static
+      symbol_type
+      make_LID (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::LID, v, l);
+      }
 #endif
 #if 201103L <= YY_CPLUSPLUS
-    static symbol_type make_UID(std::string v, location_type l)
-    {
-      return symbol_type(token::UID, std::move(v), std::move(l));
-    }
+      static
+      symbol_type
+      make_UID (std::string v, location_type l)
+      {
+        return symbol_type (token::UID, std::move (v), std::move (l));
+      }
 #else
-    static symbol_type make_UID(const std::string& v, const location_type& l)
-    {
-      return symbol_type(token::UID, v, l);
-    }
+      static
+      symbol_type
+      make_UID (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::UID, v, l);
+      }
 #endif
 
+
   private:
 #if YY_CPLUSPLUS < 201103L
     /// Non copyable.
-    parser(const parser&);
+    parser (const parser&);
     /// Non copyable.
-    parser& operator=(const parser&);
+    parser& operator= (const parser&);
 #endif
 
+
     /// Stored state numbers (used for stacks).
     typedef signed char state_type;
 
     /// Compute post-reduction state.
     /// \param yystate   the current state
     /// \param yysym     the nonterminal to push on the stack
-    static state_type yy_lr_goto_state_(state_type yystate, int yysym);
+    static state_type yy_lr_goto_state_ (state_type yystate, int yysym);
 
     /// Whether the given \c yypact_ value indicates a defaulted state.
     /// \param yyvalue   the value to check
-    static bool yy_pact_value_is_default_(int yyvalue) YY_NOEXCEPT;
+    static bool yy_pact_value_is_default_ (int yyvalue) YY_NOEXCEPT;
 
     /// Whether the given \c yytable_ value indicates a syntax error.
     /// \param yyvalue   the value to check
-    static bool yy_table_value_is_error_(int yyvalue) YY_NOEXCEPT;
+    static bool yy_table_value_is_error_ (int yyvalue) YY_NOEXCEPT;
 
     static const signed char yypact_ninf_;
     static const signed char yytable_ninf_;
@@ -1271,13 +1489,14 @@ namespace yy
     /// Convert a scanner token kind \a t to a symbol kind.
     /// In theory \a t should be a token_kind_type, but character literals
     /// are valid, yet not members of the token_kind_type enum.
-    static symbol_kind_type yytranslate_(int t) YY_NOEXCEPT;
+    static symbol_kind_type yytranslate_ (int t) YY_NOEXCEPT;
 
 #if YYDEBUG || 0
     /// For a symbol, its name in clear.
     static const char* const yytname_[];
 #endif // #if YYDEBUG || 0
 
+
     // Tables.
     // YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
     // STATE-NUM.
@@ -1311,13 +1530,14 @@ namespace yy
     // YYR2[RULE-NUM] -- Number of symbols on the right-hand side of rule RULE-NUM.
     static const signed char yyr2_[];
 
+
 #if YYDEBUG
     // YYRLINE[YYN] -- Source line where rule number YYN was defined.
     static const unsigned char yyrline_[];
     /// Report on the debug stream that the rule \a r is going to be reduced.
-    virtual void yy_reduce_print_(int r) const;
+    virtual void yy_reduce_print_ (int r) const;
     /// Print the state stack on the debug stream.
-    virtual void yy_stack_print_() const;
+    virtual void yy_stack_print_ () const;
 
     /// Debugging level.
     int yydebug_;
@@ -1328,7 +1548,7 @@ namespace yy
     /// \param yyo    The output stream.
     /// \param yysym  The symbol.
     template <typename Base>
-    void yy_print_(std::ostream& yyo, const basic_symbol<Base>& yysym) const;
+    void yy_print_ (std::ostream& yyo, const basic_symbol<Base>& yysym) const;
 #endif
 
     /// \brief Reclaim the memory associated to a symbol.
@@ -1336,40 +1556,37 @@ namespace yy
     ///                  If null, print nothing.
     /// \param yysym     The symbol.
     template <typename Base>
-    void yy_destroy_(const char* yymsg, basic_symbol<Base>& yysym) const;
+    void yy_destroy_ (const char* yymsg, basic_symbol<Base>& yysym) const;
 
   private:
     /// Type access provider for state based symbols.
     struct by_state
     {
       /// Default constructor.
-      by_state() YY_NOEXCEPT;
+      by_state () YY_NOEXCEPT;
 
       /// The symbol kind as needed by the constructor.
       typedef state_type kind_type;
 
       /// Constructor.
-      by_state(kind_type s) YY_NOEXCEPT;
+      by_state (kind_type s) YY_NOEXCEPT;
 
       /// Copy constructor.
-      by_state(const by_state& that) YY_NOEXCEPT;
+      by_state (const by_state& that) YY_NOEXCEPT;
 
       /// Record that this symbol is empty.
-      void clear() YY_NOEXCEPT;
+      void clear () YY_NOEXCEPT;
 
       /// Steal the symbol kind from \a that.
-      void move(by_state& that);
+      void move (by_state& that);
 
       /// The symbol kind (corresponding to \a state).
       /// \a symbol_kind::S_YYEMPTY when empty.
-      symbol_kind_type kind() const YY_NOEXCEPT;
+      symbol_kind_type kind () const YY_NOEXCEPT;
 
       /// The state number used to denote an empty symbol.
       /// We use the initial state, as it does not have a value.
-      enum
-      {
-        empty_state = 0
-      };
+      enum { empty_state = 0 };
 
       /// The state.
       /// \a empty when empty.
@@ -1382,105 +1599,140 @@ namespace yy
       /// Superclass.
       typedef basic_symbol<by_state> super_type;
       /// Construct an empty symbol.
-      stack_symbol_type();
+      stack_symbol_type ();
       /// Move or copy construction.
-      stack_symbol_type(YY_RVREF(stack_symbol_type) that);
+      stack_symbol_type (YY_RVREF (stack_symbol_type) that);
       /// Steal the contents from \a sym to build this.
-      stack_symbol_type(state_type s, YY_MOVE_REF(symbol_type) sym);
+      stack_symbol_type (state_type s, YY_MOVE_REF (symbol_type) sym);
 #if YY_CPLUSPLUS < 201103L
       /// Assignment, needed by push_back by some old implementations.
       /// Moves the contents of that.
-      stack_symbol_type& operator=(stack_symbol_type& that);
+      stack_symbol_type& operator= (stack_symbol_type& that);
 
       /// Assignment, needed by push_back by other implementations.
       /// Needed by some other old implementations.
-      stack_symbol_type& operator=(const stack_symbol_type& that);
+      stack_symbol_type& operator= (const stack_symbol_type& that);
 #endif
     };
 
     /// A stack with random access from its top.
-    template <typename T, typename S = std::vector<T> > class stack
+    template <typename T, typename S = std::vector<T> >
+    class stack
     {
     public:
       // Hide our reversed order.
-      typedef typename S::iterator       iterator;
+      typedef typename S::iterator iterator;
       typedef typename S::const_iterator const_iterator;
-      typedef typename S::size_type      size_type;
-      typedef typename std::ptrdiff_t    index_type;
+      typedef typename S::size_type size_type;
+      typedef typename std::ptrdiff_t index_type;
 
-      stack(size_type n = 200) YY_NOEXCEPT : seq_(n) {}
+      stack (size_type n = 200) YY_NOEXCEPT
+        : seq_ (n)
+      {}
 
 #if 201103L <= YY_CPLUSPLUS
       /// Non copyable.
-      stack(const stack&) = delete;
+      stack (const stack&) = delete;
       /// Non copyable.
-      stack& operator=(const stack&) = delete;
+      stack& operator= (const stack&) = delete;
 #endif
 
       /// Random access.
       ///
       /// Index 0 returns the topmost element.
-      const T& operator[](index_type i) const { return seq_[size_type(size() - 1 - i)]; }
+      const T&
+      operator[] (index_type i) const
+      {
+        return seq_[size_type (size () - 1 - i)];
+      }
 
       /// Random access.
       ///
       /// Index 0 returns the topmost element.
-      T& operator[](index_type i) { return seq_[size_type(size() - 1 - i)]; }
+      T&
+      operator[] (index_type i)
+      {
+        return seq_[size_type (size () - 1 - i)];
+      }
 
       /// Steal the contents of \a t.
       ///
       /// Close to move-semantics.
-      void push(YY_MOVE_REF(T) t)
+      void
+      push (YY_MOVE_REF (T) t)
       {
-        seq_.push_back(T());
-        operator[](0).move(t);
+        seq_.push_back (T ());
+        operator[] (0).move (t);
       }
 
       /// Pop elements from the stack.
-      void pop(std::ptrdiff_t n = 1) YY_NOEXCEPT
+      void
+      pop (std::ptrdiff_t n = 1) YY_NOEXCEPT
       {
         for (; 0 < n; --n)
-          seq_.pop_back();
+          seq_.pop_back ();
       }
 
       /// Pop all elements from the stack.
-      void clear() YY_NOEXCEPT { seq_.clear(); }
+      void
+      clear () YY_NOEXCEPT
+      {
+        seq_.clear ();
+      }
 
       /// Number of elements on the stack.
-      index_type size() const YY_NOEXCEPT { return index_type(seq_.size()); }
+      index_type
+      size () const YY_NOEXCEPT
+      {
+        return index_type (seq_.size ());
+      }
 
       /// Iterator on top of the stack (going downwards).
-      const_iterator begin() const YY_NOEXCEPT { return seq_.begin(); }
+      const_iterator
+      begin () const YY_NOEXCEPT
+      {
+        return seq_.begin ();
+      }
 
       /// Bottom of the stack.
-      const_iterator end() const YY_NOEXCEPT { return seq_.end(); }
+      const_iterator
+      end () const YY_NOEXCEPT
+      {
+        return seq_.end ();
+      }
 
       /// Present a slice of the top of a stack.
       class slice
       {
       public:
-        slice(const stack& stack, index_type range) YY_NOEXCEPT : stack_(stack),
-                                                                  range_(range)
+        slice (const stack& stack, index_type range) YY_NOEXCEPT
+          : stack_ (stack)
+          , range_ (range)
         {}
 
-        const T& operator[](index_type i) const { return stack_[range_ - i]; }
+        const T&
+        operator[] (index_type i) const
+        {
+          return stack_[range_ - i];
+        }
 
       private:
         const stack& stack_;
-        index_type   range_;
+        index_type range_;
       };
 
     private:
 #if YY_CPLUSPLUS < 201103L
       /// Non copyable.
-      stack(const stack&);
+      stack (const stack&);
       /// Non copyable.
-      stack& operator=(const stack&);
+      stack& operator= (const stack&);
 #endif
       /// The wrapped container.
       S seq_;
     };
 
+
     /// Stack type.
     typedef stack<stack_symbol_type> stack_type;
 
@@ -1492,7 +1744,7 @@ namespace yy
     ///             if null, no trace is output.
     /// \param sym  the symbol
     /// \warning the contents of \a s.value is stolen.
-    void yypush_(const char* m, YY_MOVE_REF(stack_symbol_type) sym);
+    void yypush_ (const char* m, YY_MOVE_REF (stack_symbol_type) sym);
 
     /// Push a new look ahead token on the state on the stack.
     /// \param m    a debug message to display
@@ -1500,225 +1752,289 @@ namespace yy
     /// \param s    the state
     /// \param sym  the symbol (for its value and location).
     /// \warning the contents of \a sym.value is stolen.
-    void yypush_(const char* m, state_type s, YY_MOVE_REF(symbol_type) sym);
+    void yypush_ (const char* m, state_type s, YY_MOVE_REF (symbol_type) sym);
 
     /// Pop \a n symbols from the stack.
-    void yypop_(int n = 1) YY_NOEXCEPT;
+    void yypop_ (int n = 1) YY_NOEXCEPT;
 
     /// Constants.
     enum
     {
-      yylast_ = 62, ///< Last index in yytable_.
-      yynnts_ = 18, ///< Number of nonterminal symbols.
+      yylast_ = 62,     ///< Last index in yytable_.
+      yynnts_ = 18,  ///< Number of nonterminal symbols.
       yyfinal_ = 10 ///< Termination state number.
     };
+
+
+
   };
 
-  inline parser::symbol_kind_type parser::yytranslate_(int t) YY_NOEXCEPT
+  inline
+  parser::symbol_kind_type
+  parser::yytranslate_ (int t) YY_NOEXCEPT
   {
     // YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to
     // TOKEN-NUM as returned by yylex.
-    static const signed char translate_table[] = {
-      0, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, 2, 2, 2, 2, 2,
-      2, 2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  1,  2,  3, 4, 5, 6, 7, 8,
-      9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25};
+    static
+    const signed char
+    translate_table[] =
+    {
+       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
+       5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
+      15,    16,    17,    18,    19,    20,    21,    22,    23,    24,
+      25
+    };
     // Last valid token kind.
     const int code_max = 280;
 
     if (t <= 0)
       return symbol_kind::S_YYEOF;
     else if (t <= code_max)
-      return static_cast<symbol_kind_type>(translate_table[t]);
+      return static_cast <symbol_kind_type> (translate_table[t]);
     else
       return symbol_kind::S_YYUNDEF;
   }
 
   // basic_symbol.
   template <typename Base>
-  parser::basic_symbol<Base>::basic_symbol(const basic_symbol& that)
-    : Base(that), value(), location(that.location)
+  parser::basic_symbol<Base>::basic_symbol (const basic_symbol& that)
+    : Base (that)
+    , value ()
+    , location (that.location)
   {
-    switch (this->kind())
-      {
-      case symbol_kind::S_Add:             // Add
-      case symbol_kind::S_Mul:             // Mul
-      case symbol_kind::S_Application:     // Application
+    switch (this->kind ())
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
       case symbol_kind::S_ApplicationBase: // ApplicationBase
-      case symbol_kind::S_Match:           // Match
-        value.copy<AST::Ptr>(YY_MOVE(that.value));
+      case symbol_kind::S_Match: // Match
+        value.copy< AST::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Branch: // Branch
-        value.copy<Branch::Ptr>(YY_MOVE(that.value));
+        value.copy< Branch::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Constructor: // Constructor
-        value.copy<Constructor::Ptr>(YY_MOVE(that.value));
+        value.copy< Constructor::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Definition: // Definition
-      case symbol_kind::S_Fn:         // Fn
-      case symbol_kind::S_Data:       // Data
-        value.copy<Definition::Ptr>(YY_MOVE(that.value));
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.copy< Definition::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Pattern: // Pattern
-        value.copy<Pattern::Ptr>(YY_MOVE(that.value));
+        value.copy< Pattern::Ptr > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_INT: // INT
-        value.copy<int>(YY_MOVE(that.value));
+        value.copy< int > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_LID: // LID
       case symbol_kind::S_UID: // UID
-        value.copy<std::string>(YY_MOVE(that.value));
+        value.copy< std::string > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Branches: // Branches
-        value.copy<std::vector<Branch::Ptr> >(YY_MOVE(that.value));
+        value.copy< std::vector<Branch::Ptr> > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_Constructors: // Constructors
-        value.copy<std::vector<Constructor::Ptr> >(YY_MOVE(that.value));
+        value.copy< std::vector<Constructor::Ptr> > (YY_MOVE (that.value));
         break;
 
-      case symbol_kind::S_Program:     // Program
+      case symbol_kind::S_Program: // Program
       case symbol_kind::S_Definitions: // Definitions
-        value.copy<std::vector<Definition::Ptr> >(YY_MOVE(that.value));
+        value.copy< std::vector<Definition::Ptr> > (YY_MOVE (that.value));
         break;
 
       case symbol_kind::S_LowercaseParams: // LowercaseParams
       case symbol_kind::S_UppercaseParams: // UppercaseParams
-        value.copy<std::vector<std::string> >(YY_MOVE(that.value));
+        value.copy< std::vector<std::string> > (YY_MOVE (that.value));
         break;
 
       default:
         break;
-      }
+    }
+
   }
 
+
+
+
   template <typename Base>
-  parser::symbol_kind_type parser::basic_symbol<Base>::type_get() const YY_NOEXCEPT
+  parser::symbol_kind_type
+  parser::basic_symbol<Base>::type_get () const YY_NOEXCEPT
   {
-    return this->kind();
+    return this->kind ();
   }
 
-  template <typename Base> bool parser::basic_symbol<Base>::empty() const YY_NOEXCEPT
+
+  template <typename Base>
+  bool
+  parser::basic_symbol<Base>::empty () const YY_NOEXCEPT
   {
-    return this->kind() == symbol_kind::S_YYEMPTY;
+    return this->kind () == symbol_kind::S_YYEMPTY;
   }
 
-  template <typename Base> void parser::basic_symbol<Base>::move(basic_symbol& s)
+  template <typename Base>
+  void
+  parser::basic_symbol<Base>::move (basic_symbol& s)
   {
-    super_type::move(s);
-    switch (this->kind())
-      {
-      case symbol_kind::S_Add:             // Add
-      case symbol_kind::S_Mul:             // Mul
-      case symbol_kind::S_Application:     // Application
+    super_type::move (s);
+    switch (this->kind ())
+    {
+      case symbol_kind::S_Add: // Add
+      case symbol_kind::S_Mul: // Mul
+      case symbol_kind::S_Application: // Application
       case symbol_kind::S_ApplicationBase: // ApplicationBase
-      case symbol_kind::S_Match:           // Match
-        value.move<AST::Ptr>(YY_MOVE(s.value));
+      case symbol_kind::S_Match: // Match
+        value.move< AST::Ptr > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_Branch: // Branch
-        value.move<Branch::Ptr>(YY_MOVE(s.value));
+        value.move< Branch::Ptr > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_Constructor: // Constructor
-        value.move<Constructor::Ptr>(YY_MOVE(s.value));
+        value.move< Constructor::Ptr > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_Definition: // Definition
-      case symbol_kind::S_Fn:         // Fn
-      case symbol_kind::S_Data:       // Data
-        value.move<Definition::Ptr>(YY_MOVE(s.value));
+      case symbol_kind::S_Fn: // Fn
+      case symbol_kind::S_Data: // Data
+        value.move< Definition::Ptr > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_Pattern: // Pattern
-        value.move<Pattern::Ptr>(YY_MOVE(s.value));
+        value.move< Pattern::Ptr > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_INT: // INT
-        value.move<int>(YY_MOVE(s.value));
+        value.move< int > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_LID: // LID
       case symbol_kind::S_UID: // UID
-        value.move<std::string>(YY_MOVE(s.value));
+        value.move< std::string > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_Branches: // Branches
-        value.move<std::vector<Branch::Ptr> >(YY_MOVE(s.value));
+        value.move< std::vector<Branch::Ptr> > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_Constructors: // Constructors
-        value.move<std::vector<Constructor::Ptr> >(YY_MOVE(s.value));
+        value.move< std::vector<Constructor::Ptr> > (YY_MOVE (s.value));
         break;
 
-      case symbol_kind::S_Program:     // Program
+      case symbol_kind::S_Program: // Program
       case symbol_kind::S_Definitions: // Definitions
-        value.move<std::vector<Definition::Ptr> >(YY_MOVE(s.value));
+        value.move< std::vector<Definition::Ptr> > (YY_MOVE (s.value));
         break;
 
       case symbol_kind::S_LowercaseParams: // LowercaseParams
       case symbol_kind::S_UppercaseParams: // UppercaseParams
-        value.move<std::vector<std::string> >(YY_MOVE(s.value));
+        value.move< std::vector<std::string> > (YY_MOVE (s.value));
         break;
 
       default:
         break;
-      }
+    }
 
-    location = YY_MOVE(s.location);
+    location = YY_MOVE (s.location);
   }
 
   // by_kind.
-  inline parser::by_kind::by_kind() YY_NOEXCEPT : kind_(symbol_kind::S_YYEMPTY) {}
+  inline
+  parser::by_kind::by_kind () YY_NOEXCEPT
+    : kind_ (symbol_kind::S_YYEMPTY)
+  {}
 
 #if 201103L <= YY_CPLUSPLUS
-  inline parser::by_kind::by_kind(by_kind&& that) YY_NOEXCEPT : kind_(that.kind_)
+  inline
+  parser::by_kind::by_kind (by_kind&& that) YY_NOEXCEPT
+    : kind_ (that.kind_)
   {
-    that.clear();
+    that.clear ();
   }
 #endif
 
-  inline parser::by_kind::by_kind(const by_kind& that) YY_NOEXCEPT : kind_(that.kind_) {}
+  inline
+  parser::by_kind::by_kind (const by_kind& that) YY_NOEXCEPT
+    : kind_ (that.kind_)
+  {}
 
-  inline parser::by_kind::by_kind(token_kind_type t) YY_NOEXCEPT : kind_(yytranslate_(t))
+  inline
+  parser::by_kind::by_kind (token_kind_type t) YY_NOEXCEPT
+    : kind_ (yytranslate_ (t))
   {}
 
-  inline void parser::by_kind::clear() YY_NOEXCEPT { kind_ = symbol_kind::S_YYEMPTY; }
 
-  inline void parser::by_kind::move(by_kind& that)
+
+  inline
+  void
+  parser::by_kind::clear () YY_NOEXCEPT
+  {
+    kind_ = symbol_kind::S_YYEMPTY;
+  }
+
+  inline
+  void
+  parser::by_kind::move (by_kind& that)
   {
     kind_ = that.kind_;
-    that.clear();
+    that.clear ();
   }
 
-  inline parser::symbol_kind_type parser::by_kind::kind() const YY_NOEXCEPT
+  inline
+  parser::symbol_kind_type
+  parser::by_kind::kind () const YY_NOEXCEPT
   {
     return kind_;
   }
 
-  inline parser::symbol_kind_type parser::by_kind::type_get() const YY_NOEXCEPT
+
+  inline
+  parser::symbol_kind_type
+  parser::by_kind::type_get () const YY_NOEXCEPT
   {
-    return this->kind();
+    return this->kind ();
   }
 
-} // namespace yy
 
-#line 2036 "./parser/bison_parser.hpp"
+} // yy
+#line 2036 "/home/muqiu/Workspace/Swallow/compiler/parser/bison_parser.hpp"
+
+
+
 
-#endif // !YY_YY_PARSER_BISON_PARSER_HPP_INCLUDED
+#endif // !YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_BISON_PARSER_HPP_INCLUDED
diff --git a/compiler/parser/location.hh b/compiler/parser/location.hh
index b5bd227..810a5c2 100644
--- a/compiler/parser/location.hh
+++ b/compiler/parser/location.hh
@@ -31,31 +31,30 @@
 // version 2.2 of Bison.
 
 /**
- ** \file ./parser/location.hh
+ ** \file /home/muqiu/Workspace/Swallow/compiler/parser/location.hh
  ** Define the yy::location class.
  */
 
-#ifndef YY_YY_PARSER_LOCATION_HH_INCLUDED
-#define YY_YY_PARSER_LOCATION_HH_INCLUDED
+#ifndef YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_LOCATION_HH_INCLUDED
+# define YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_LOCATION_HH_INCLUDED
 
-#include <iostream>
-#include <string>
+# include <iostream>
+# include <string>
 
-#ifndef YY_NULLPTR
-#if defined __cplusplus
-#if 201103L <= __cplusplus
-#define YY_NULLPTR nullptr
-#else
-#define YY_NULLPTR 0
-#endif
-#else
-#define YY_NULLPTR ((void*) 0)
-#endif
-#endif
+# ifndef YY_NULLPTR
+#  if defined __cplusplus
+#   if 201103L <= __cplusplus
+#    define YY_NULLPTR nullptr
+#   else
+#    define YY_NULLPTR 0
+#   endif
+#  else
+#   define YY_NULLPTR ((void*)0)
+#  endif
+# endif
 
-namespace yy
-{
-#line 58 "./parser/location.hh"
+namespace yy {
+#line 58 "/home/muqiu/Workspace/Swallow/compiler/parser/location.hh"
 
   /// A point in a source file.
   class position
@@ -67,13 +66,19 @@ namespace yy
     typedef int counter_type;
 
     /// Construct a position.
-    explicit position(
-      filename_type* f = YY_NULLPTR, counter_type l = 1, counter_type c = 1)
-      : filename(f), line(l), column(c)
+    explicit position (filename_type* f = YY_NULLPTR,
+                       counter_type l = 1,
+                       counter_type c = 1)
+      : filename (f)
+      , line (l)
+      , column (c)
     {}
 
+
     /// Initialization.
-    void initialize(filename_type* fn = YY_NULLPTR, counter_type l = 1, counter_type c = 1)
+    void initialize (filename_type* fn = YY_NULLPTR,
+                     counter_type l = 1,
+                     counter_type c = 1)
     {
       filename = fn;
       line = l;
@@ -83,18 +88,20 @@ namespace yy
     /** \name Line and Column related manipulators
      ** \{ */
     /// (line related) Advance to the COUNT next lines.
-    void lines(counter_type count = 1)
+    void lines (counter_type count = 1)
     {
       if (count)
         {
           column = 1;
-          line = add_(line, count, 1);
+          line = add_ (line, count, 1);
         }
     }
 
     /// (column related) Advance to the COUNT next columns.
-    void columns(counter_type count = 1) { column = add_(column, count, 1); }
-
+    void columns (counter_type count = 1)
+    {
+      column = add_ (column, count, 1);
+    }
     /** \} */
 
     /// File name to which this position refers.
@@ -106,33 +113,37 @@ namespace yy
 
   private:
     /// Compute max (min, lhs+rhs).
-    static counter_type add_(counter_type lhs, counter_type rhs, counter_type min)
+    static counter_type add_ (counter_type lhs, counter_type rhs, counter_type min)
     {
       return lhs + rhs < min ? min : lhs + rhs;
     }
   };
 
   /// Add \a width columns, in place.
-  inline position& operator+=(position& res, position::counter_type width)
+  inline position&
+  operator+= (position& res, position::counter_type width)
   {
-    res.columns(width);
+    res.columns (width);
     return res;
   }
 
   /// Add \a width columns.
-  inline position operator+(position res, position::counter_type width)
+  inline position
+  operator+ (position res, position::counter_type width)
   {
     return res += width;
   }
 
   /// Subtract \a width columns, in place.
-  inline position& operator-=(position& res, position::counter_type width)
+  inline position&
+  operator-= (position& res, position::counter_type width)
   {
     return res += -width;
   }
 
   /// Subtract \a width columns.
-  inline position operator-(position res, position::counter_type width)
+  inline position
+  operator- (position res, position::counter_type width)
   {
     return res -= width;
   }
@@ -143,7 +154,7 @@ namespace yy
    */
   template <typename YYChar>
   std::basic_ostream<YYChar>&
-    operator<<(std::basic_ostream<YYChar>& ostr, const position& pos)
+  operator<< (std::basic_ostream<YYChar>& ostr, const position& pos)
   {
     if (pos.filename)
       ostr << *pos.filename << ':';
@@ -160,20 +171,32 @@ namespace yy
     typedef position::counter_type counter_type;
 
     /// Construct a location from \a b to \a e.
-    location(const position& b, const position& e) : begin(b), end(e) {}
+    location (const position& b, const position& e)
+      : begin (b)
+      , end (e)
+    {}
 
     /// Construct a 0-width location in \a p.
-    explicit location(const position& p = position()) : begin(p), end(p) {}
+    explicit location (const position& p = position ())
+      : begin (p)
+      , end (p)
+    {}
 
     /// Construct a 0-width location in \a f, \a l, \a c.
-    explicit location(filename_type* f, counter_type l = 1, counter_type c = 1)
-      : begin(f, l, c), end(f, l, c)
+    explicit location (filename_type* f,
+                       counter_type l = 1,
+                       counter_type c = 1)
+      : begin (f, l, c)
+      , end (f, l, c)
     {}
 
+
     /// Initialization.
-    void initialize(filename_type* f = YY_NULLPTR, counter_type l = 1, counter_type c = 1)
+    void initialize (filename_type* f = YY_NULLPTR,
+                     counter_type l = 1,
+                     counter_type c = 1)
     {
-      begin.initialize(f, l, c);
+      begin.initialize (f, l, c);
       end = begin;
     }
 
@@ -181,16 +204,25 @@ namespace yy
      ** \{ */
   public:
     /// Reset initial location to final location.
-    void step() { begin = end; }
+    void step ()
+    {
+      begin = end;
+    }
 
     /// Extend the current location to the COUNT next columns.
-    void columns(counter_type count = 1) { end += count; }
+    void columns (counter_type count = 1)
+    {
+      end += count;
+    }
 
     /// Extend the current location to the COUNT next lines.
-    void lines(counter_type count = 1) { end.lines(count); }
-
+    void lines (counter_type count = 1)
+    {
+      end.lines (count);
+    }
     /** \} */
 
+
   public:
     /// Beginning of the located region.
     position begin;
@@ -199,36 +231,45 @@ namespace yy
   };
 
   /// Join two locations, in place.
-  inline location& operator+=(location& res, const location& end)
+  inline location&
+  operator+= (location& res, const location& end)
   {
     res.end = end.end;
     return res;
   }
 
   /// Join two locations.
-  inline location operator+(location res, const location& end) { return res += end; }
+  inline location
+  operator+ (location res, const location& end)
+  {
+    return res += end;
+  }
 
   /// Add \a width columns to the end position, in place.
-  inline location& operator+=(location& res, location::counter_type width)
+  inline location&
+  operator+= (location& res, location::counter_type width)
   {
-    res.columns(width);
+    res.columns (width);
     return res;
   }
 
   /// Add \a width columns to the end position.
-  inline location operator+(location res, location::counter_type width)
+  inline location
+  operator+ (location res, location::counter_type width)
   {
     return res += width;
   }
 
   /// Subtract \a width columns to the end position, in place.
-  inline location& operator-=(location& res, location::counter_type width)
+  inline location&
+  operator-= (location& res, location::counter_type width)
   {
     return res += -width;
   }
 
   /// Subtract \a width columns to the end position.
-  inline location operator-(location res, location::counter_type width)
+  inline location
+  operator- (location res, location::counter_type width)
   {
     return res -= width;
   }
@@ -241,11 +282,14 @@ namespace yy
    */
   template <typename YYChar>
   std::basic_ostream<YYChar>&
-    operator<<(std::basic_ostream<YYChar>& ostr, const location& loc)
+  operator<< (std::basic_ostream<YYChar>& ostr, const location& loc)
   {
-    location::counter_type end_col = 0 < loc.end.column ? loc.end.column - 1 : 0;
+    location::counter_type end_col
+      = 0 < loc.end.column ? loc.end.column - 1 : 0;
     ostr << loc.begin;
-    if (loc.end.filename && (!loc.begin.filename || *loc.begin.filename != *loc.end.filename))
+    if (loc.end.filename
+        && (!loc.begin.filename
+            || *loc.begin.filename != *loc.end.filename))
       ostr << '-' << loc.end.filename << ':' << loc.end.line << '.' << end_col;
     else if (loc.begin.line < loc.end.line)
       ostr << '-' << loc.end.line << '.' << end_col;
@@ -254,8 +298,7 @@ namespace yy
     return ostr;
   }
 
-} // namespace yy
-
-#line 303 "./parser/location.hh"
+} // yy
+#line 303 "/home/muqiu/Workspace/Swallow/compiler/parser/location.hh"
 
-#endif // !YY_YY_PARSER_LOCATION_HH_INCLUDED
+#endif // !YY_YY_HOME_MUQIU_WORKSPACE_SWALLOW_COMPILER_PARSER_LOCATION_HH_INCLUDED
diff --git a/compiler/parser/parser.cpp b/compiler/parser/parser.cpp
index 581f051..e3e755f 100644
--- a/compiler/parser/parser.cpp
+++ b/compiler/parser/parser.cpp
@@ -29,12 +29,12 @@
 
 #include "parser.h"
 #include "bison_parser.hpp"
-#include "code.hpp"
 #include "compiler.h"
+#include "diagnostics/code.hpp"
 #include "diagnostics/reporter.hpp"
 #include "location.hh"
-#include "panic/panic.hpp"
 #include <cstdio>
+#include "error/errors.hpp"
 
 namespace yy
 {
@@ -63,7 +63,7 @@ namespace swallow::compiler::parser
     FILE *file = std::fopen(compiler::CompileUnit::FILE->FilePath.c_str(), "r");
 
     if (file == nullptr)
-      utils::Panic("Cannot open file {}", compiler::CompileUnit::FILE->FilePath);
+      Panic(fmt::format("Cannot open file {}", compiler::CompileUnit::FILE->FilePath));
 
     yyin = file;
     yy::parser().parse();
diff --git a/compiler/parser/parser.y b/compiler/parser/parser.y
index 7894cee..aed296d 100644
--- a/compiler/parser/parser.y
+++ b/compiler/parser/parser.y
@@ -1,21 +1,20 @@
-%code requires {
-    #include "ast/ast.hpp"
-    using namespace swallow::compiler::ast;
-    using namespace swallow::compiler;
-}
-
 %{
 #include <string>
 #include <iostream>
 #include "bison_parser.hpp"
 #include "diagnostics/reporter.hpp"
-#include "binop/binop.hpp"
+#include "utils/binop.hpp"
 
 std::vector<Definition::Ptr> Program;
 extern yy::parser::symbol_type yylex();
-
 %}
 
+%code requires {
+    #include "ast/ast.hpp"
+    using namespace swallow::compiler::ast;
+    using namespace swallow::compiler;
+}
+
 %token PLUS
 %token TIMES
 %token MINUS
diff --git a/compiler/runtime/node.cpp b/compiler/runtime/node.cpp
index 8a0aa26..aa15e85 100644
--- a/compiler/runtime/node.cpp
+++ b/compiler/runtime/node.cpp
@@ -27,9 +27,9 @@
 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include <cstdlib>
 #include "node.h"
-#include "utils/panic/panic.hpp"
+#include <cstdlib>
+#include "error/errors.hpp"
 
 namespace swallow::compiler::runtime::node
 {
@@ -38,13 +38,12 @@ namespace swallow::compiler::runtime::node
     auto *node = reinterpret_cast<Base *>(std::malloc(sizeof(class Application)));
 
     if (nullptr == node)
-      utils::Panic("ICE: Cannot allocate Base node");
+      Panic("ICE: Cannot allocate Base node");
     else
       return node;
   }
 
-  [[nodiscard]] auto
-    Application::Allocate(Base *Left, Base *Right) noexcept -> Application *
+  [[nodiscard]] auto Application::Allocate(Base *Left, Base *Right) noexcept -> Application *
   {
     auto *node = reinterpret_cast<Application *>(Base::Allocate());
     node->Node.Tag = Tag::APPLICATION;
@@ -61,8 +60,7 @@ namespace swallow::compiler::runtime::node
     return node;
   }
 
-  [[nodiscard]] auto Global::Allocate(
-    void (*Function)(runtime::stack::Stack *), int32_t Arity) noexcept -> Global *
+  [[nodiscard]] auto Global::Allocate(void (*Function)(runtime::stack::Stack *), int32_t Arity) noexcept -> Global *
   {
     auto *node = reinterpret_cast<Global *>(Base::Allocate());
     node->Node.Tag = Tag::GLOBAL;
diff --git a/compiler/runtime/node.h b/compiler/runtime/node.h
index c80023a..c6c942a 100644
--- a/compiler/runtime/node.h
+++ b/compiler/runtime/node.h
@@ -31,6 +31,7 @@
 #define SWALLOW_COMPILER_RUNTIME_NODE_H
 
 #include <cstdint>
+#include "error/errors.hpp"
 
 namespace swallow::compiler::runtime::stack
 {
@@ -39,7 +40,7 @@ namespace swallow::compiler::runtime::stack
 
 namespace swallow::compiler::runtime::node
 {
-  enum class Tag
+  enum class Tag : int8_t
   {
     APPLICATION,
     INT,
@@ -86,8 +87,7 @@ namespace swallow::compiler::runtime::node
     void (*Function)(runtime::stack::Stack *);
 
   public:
-    [[nodiscard]] static auto Allocate(
-      void (*Function)(runtime::stack::Stack *), int32_t Arity) noexcept -> Global *;
+    [[nodiscard]] static auto Allocate(void (*Function)(runtime::stack::Stack *), int32_t Arity) noexcept -> Global *;
   };
 
   class Ind
diff --git a/compiler/runtime/runtime.cpp b/compiler/runtime/runtime.cpp
index a2eabfe..796140a 100644
--- a/compiler/runtime/runtime.cpp
+++ b/compiler/runtime/runtime.cpp
@@ -28,9 +28,9 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "runtime.h"
-#include "panic/panic.hpp"
 #include "runtime/node.h"
 #include "runtime/stack.h"
+#include "error/errors.hpp"
 
 namespace swallow::compiler::runtime
 {
@@ -60,12 +60,11 @@ namespace swallow::compiler::runtime
             auto *node = reinterpret_cast<node::Global *>(peek);
 
             if (stack->Count < node->Arity)
-              utils::Panic("ICE: stack->Count > node->Arity");
+              Panic("ICE: stack->Count > node->Arity");
 
             for (size_t i = 1; i <= node->Arity; i++)
               stack->Data[stack->Count - i] =
-                reinterpret_cast<node::Application *>(stack->Data[stack->Count - i - 1])
-                  ->Right;
+                reinterpret_cast<node::Application *>(stack->Data[stack->Count - i - 1])->Right;
 
             node->Function(stack);
           }
@@ -84,12 +83,10 @@ namespace swallow::compiler::runtime
 void AddFunction(swallow::compiler::runtime::stack::Stack *stack) noexcept
 {
   auto *left = reinterpret_cast<swallow::compiler::runtime::node::Int *>(
-    swallow::compiler::runtime::Runtime::Eval(
-      swallow::compiler::runtime::stack::Stack::Peek(stack, 0)));
+    swallow::compiler::runtime::Runtime::Eval(swallow::compiler::runtime::stack::Stack::Peek(stack, 0)));
 
   auto *right = reinterpret_cast<swallow::compiler::runtime::node::Int *>(
-    swallow::compiler::runtime::Runtime::Eval(
-      swallow::compiler::runtime::stack::Stack::Peek(stack, 1)));
+    swallow::compiler::runtime::Runtime::Eval(swallow::compiler::runtime::stack::Stack::Peek(stack, 1)));
 
   swallow::compiler::runtime::stack::Stack::Push(
     stack,
@@ -101,13 +98,11 @@ void EntryPoint(swallow::compiler::runtime::stack::Stack *stack) noexcept
 {
   swallow::compiler::runtime::stack::Stack::Push(
     stack,
-    reinterpret_cast<swallow::compiler::runtime::node::Base *>(
-      swallow::compiler::runtime::node::Int::Allocate(10)));
+    reinterpret_cast<swallow::compiler::runtime::node::Base *>(swallow::compiler::runtime::node::Int::Allocate(10)));
 
   swallow::compiler::runtime::stack::Stack::Push(
     stack,
-    reinterpret_cast<swallow::compiler::runtime::node::Base *>(
-      swallow::compiler::runtime::node::Int::Allocate(20)));
+    reinterpret_cast<swallow::compiler::runtime::node::Base *>(swallow::compiler::runtime::node::Int::Allocate(20)));
 
   swallow::compiler::runtime::stack::Stack::Push(
     stack,
diff --git a/compiler/runtime/runtime.h b/compiler/runtime/runtime.h
index f124a05..1ee73dd 100644
--- a/compiler/runtime/runtime.h
+++ b/compiler/runtime/runtime.h
@@ -32,6 +32,7 @@
 
 #include "node.h"
 #include "stack.h"
+#include "error/errors.hpp"
 
 extern void EntryPoint(swallow::compiler::runtime::stack::Stack *stack) noexcept;
 
diff --git a/compiler/runtime/stack.cpp b/compiler/runtime/stack.cpp
index 1b886e5..6751464 100644
--- a/compiler/runtime/stack.cpp
+++ b/compiler/runtime/stack.cpp
@@ -28,7 +28,6 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "stack.h"
-#include "utils/panic/panic.hpp"
 #include <cstdlib>
 #include <cstring>
 
@@ -38,11 +37,10 @@ namespace swallow::compiler::runtime::stack
   {
     stack->Size = 4;
     stack->Count = 0;
-    stack->Data =
-      reinterpret_cast<node::Base **>(std::malloc(sizeof(*(stack->Data)) * stack->Size));
+    stack->Data = reinterpret_cast<node::Base **>(std::malloc(sizeof(*(stack->Data)) * stack->Size));
 
     if (nullptr == stack->Data)
-      utils::Panic("ICE: Cannot initialize runtime stack");
+      Panic("ICE: Cannot initialize runtime stack");
   }
 
   void Stack::Free(Stack *stack) noexcept { free(stack->Data); }
@@ -51,11 +49,11 @@ namespace swallow::compiler::runtime::stack
   {
     while (stack->Count >= stack->Size)
       {
-        stack->Data = reinterpret_cast<node::Base **>(
-          realloc(stack->Data, (sizeof(*(stack->Data)) * (stack->Size *= 2))));
+        stack->Data =
+          reinterpret_cast<node::Base **>(realloc(stack->Data, (sizeof(*(stack->Data)) * (stack->Size *= 2))));
 
         if (nullptr == stack->Data)
-          utils::Panic("ICE: Unable to expand runtime stack");
+          Panic("ICE: Unable to expand runtime stack");
       }
 
     stack->Data[stack->Count++] = node;
@@ -64,7 +62,7 @@ namespace swallow::compiler::runtime::stack
   [[nodiscard]] auto Stack::Pop(Stack *stack) noexcept -> node::Base *
   {
     if (stack->Count < 0)
-      utils::Panic("ICE: Cannot pop element from empty runtime stack");
+      Panic("ICE: Cannot pop element from empty runtime stack");
 
     return stack->Data[--(stack->Count)];
   }
@@ -72,8 +70,8 @@ namespace swallow::compiler::runtime::stack
   [[nodiscard]] auto Stack::Peek(Stack *stack, uint64_t o) noexcept -> node::Base *
   {
     if (stack->Count < o)
-      utils::Panic(
-        "ICE: peek exceeds the number of existing elements in the runtime stack");
+      Panic("ICE: peek exceeds the number of existing elements in the "
+            "runtime stack");
 
     return stack->Data[(stack->Count) - o - 1];
   }
@@ -81,8 +79,8 @@ namespace swallow::compiler::runtime::stack
   void Stack::PopN(Stack *stack, uint64_t n) noexcept
   {
     if (stack->Count <= n)
-      utils::Panic(
-        "ICE: pop exceeds the number of existing elements in the runtime stack");
+      Panic("ICE: pop exceeds the number of existing elements in the "
+            "runtime stack");
 
     stack->Count -= n;
   }
@@ -90,8 +88,8 @@ namespace swallow::compiler::runtime::stack
   void Stack::Slide(Stack *stack, uint64_t n) noexcept
   {
     if (stack->Count < n)
-      utils::Panic(
-        "ICE: slide exceeds the number of existing elements in the runtime stack");
+      Panic("ICE: slide exceeds the number of existing elements in the "
+            "runtime stack");
 
     stack->Data[stack->Count - n - 1] = stack->Data[stack->Count - 1];
     stack->Count -= n;
@@ -100,8 +98,8 @@ namespace swallow::compiler::runtime::stack
   void Stack::Update(Stack *stack, uint64_t o) noexcept
   {
     if (stack->Count < o + 1)
-      utils::Panic(
-        "ICE: update exceeds the number of existing elements in the runtime stack");
+      Panic("ICE: update exceeds the number of existing elements in the "
+            "runtime stack");
 
     auto *ind = reinterpret_cast<node::Ind *>(stack->Data[stack->Count - o - 2]);
     ind->Node.Tag = node::Tag::IND;
@@ -117,13 +115,13 @@ namespace swallow::compiler::runtime::stack
   void Stack::Pack(Stack *stack, uint64_t n, node::Tag tag) noexcept
   {
     if (stack->Count <= n)
-      utils::Panic(
-        "ICE: update exceeds the number of existing elements in the runtime stack");
+      Panic("ICE: update exceeds the number of existing elements in the "
+            "runtime stack");
 
     auto **data = reinterpret_cast<node::Base **>(std::malloc(sizeof(*stack->Data) * n));
 
     if (data == nullptr)
-      utils::Panic("ICE: Cannot allocate data when pack stack");
+      Panic("ICE: Cannot allocate data when pack stack");
 
     std::memcpy(data, &stack->Data[stack->Count - n - 1], n * sizeof(*data));
 
diff --git a/compiler/runtime/stack.h b/compiler/runtime/stack.h
index 758216c..df89114 100644
--- a/compiler/runtime/stack.h
+++ b/compiler/runtime/stack.h
@@ -32,6 +32,7 @@
 
 #include "node.h"
 #include <cstdint>
+#include "error/errors.hpp"
 
 namespace swallow::compiler::runtime::stack
 {
diff --git a/compiler/type/dump.cpp b/compiler/type/dump.cpp
index 5cf1698..3eff798 100644
--- a/compiler/type/dump.cpp
+++ b/compiler/type/dump.cpp
@@ -50,10 +50,7 @@ namespace swallow::compiler::type
     Left->Dump(typeManager, to);
   }
 
-  void Base::Dump(const Manager &typeManager, std::ostream &to) const noexcept
-  {
-    to << Name;
-  }
+  void Base::Dump(const Manager &typeManager, std::ostream &to) const noexcept { to << Name; }
 
   void Environment::Dump(std::ostream &to, const Manager &typeManager) noexcept
   {
diff --git a/compiler/type/environment.cpp b/compiler/type/environment.cpp
index 3584ce7..e7dbb16 100644
--- a/compiler/type/environment.cpp
+++ b/compiler/type/environment.cpp
@@ -28,30 +28,24 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "environment.hpp"
-#include "result/result.hpp"
+#include <tl/expected.hpp>
 #include <utility>
 
-using namespace swallow::compiler::utils;
-
 namespace swallow::compiler::type
 {
 
-  auto
-    Environment::Lookup(const std::string &name) const noexcept -> Result<Type::Ptr, Void>
+  auto Environment::Lookup(const std::string &name) const noexcept -> tl::expected<Type::Ptr, std::nullptr_t>
   {
     if (const auto it = Names.find(name); it != Names.end())
-      return Ok(it->second);
+      return it->second;
 
     if (Parent != nullptr)
       return Parent->Lookup(name);
 
-    return Err(Void());
+    return nullptr;
   }
 
-  void Environment::Bind(const std::string &name, Type::Ptr type) noexcept
-  {
-    Names[name] = std::move(type);
-  }
+  void Environment::Bind(const std::string &name, Type::Ptr type) noexcept { Names[name] = std::move(type); }
 
   auto Environment::Scope() const noexcept -> Environment { return Environment(this); }
 
diff --git a/compiler/type/environment.hpp b/compiler/type/environment.hpp
index ee549d8..8f5c574 100644
--- a/compiler/type/environment.hpp
+++ b/compiler/type/environment.hpp
@@ -46,8 +46,7 @@ namespace swallow::compiler::type
 
     Environment() : Environment(nullptr) {}
 
-    [[nodiscard]] auto Lookup(const std::string &name) const noexcept
-      -> utils::Result<Type::Ptr, utils::Void>;
+    [[nodiscard]] auto Lookup(const std::string &name) const noexcept -> tl::expected<Type::Ptr, std::nullptr_t>;
 
     [[nodiscard]] auto Scope() const noexcept -> Environment;
 
diff --git a/compiler/type/type.cpp b/compiler/type/type.cpp
index 8b8b6b7..a8f74a4 100644
--- a/compiler/type/type.cpp
+++ b/compiler/type/type.cpp
@@ -30,8 +30,6 @@
 #include "type.hpp"
 #include <algorithm>
 
-using namespace swallow::compiler::utils;
-
 namespace swallow::compiler::type
 {
   auto Manager::NewTypeName() noexcept -> std::string
@@ -49,15 +47,9 @@ namespace swallow::compiler::type
     return name;
   }
 
-  auto Manager::NewType() noexcept -> Type::Ptr
-  {
-    return Type::Ptr(new Variable(NewTypeName()));
-  }
+  auto Manager::NewType() noexcept -> Type::Ptr { return Type::Ptr(new Variable(NewTypeName())); }
 
-  auto Manager::NewArrowType() noexcept -> Type::Ptr
-  {
-    return Type::Ptr(new Arrow(NewType(), NewType()));
-  }
+  auto Manager::NewArrowType() noexcept -> Type::Ptr { return Type::Ptr(new Arrow(NewType(), NewType())); }
 
   auto Manager::Resolve(Type::Ptr type, Variable *&var) const noexcept -> Type::Ptr
   {
@@ -78,7 +70,7 @@ namespace swallow::compiler::type
     return type;
   }
 
-  auto Manager::Unify(Type::Ptr left, Type::Ptr right) noexcept -> Result<Void, Void>
+  auto Manager::Unify(Type::Ptr left, Type::Ptr right) noexcept -> tl::expected<std::nullptr_t, std::nullptr_t>
   {
     Variable *leftVar = nullptr;
     Variable *rightVar = nullptr;
@@ -89,17 +81,16 @@ namespace swallow::compiler::type
     if (leftVar != nullptr)
       {
         Bind(leftVar->Name, right);
-        return Ok(Void());
+        return nullptr;
       }
 
     if (rightVar != nullptr)
       {
         Bind(rightVar->Name, left);
-        return Ok(Void());
+        return nullptr;
       }
 
-    if (auto *leftArrow = dynamic_cast<Arrow *>(left.get()),
-        *rightArrow = dynamic_cast<Arrow *>(right.get());
+    if (auto *leftArrow = dynamic_cast<Arrow *>(left.get()), *rightArrow = dynamic_cast<Arrow *>(right.get());
         leftArrow != nullptr && rightArrow != nullptr)
       {
         return Unify(leftArrow->Left, rightArrow->Left).and_then([&](const auto &ok) {
@@ -107,21 +98,19 @@ namespace swallow::compiler::type
         });
       }
 
-    if (auto *leftID = dynamic_cast<Base *>(left.get()),
-        *rightID = dynamic_cast<Base *>(right.get());
+    if (auto *leftID = dynamic_cast<Base *>(left.get()), *rightID = dynamic_cast<Base *>(right.get());
         leftID != nullptr && rightID != nullptr)
       {
         if (leftID->Name == rightID->Name)
-          return Ok(Void());
+          return nullptr;
       }
 
-    return Err(Void());
+    return nullptr;
   }
 
   void Manager::Bind(const std::string &name, const Type::Ptr &type) noexcept
   {
-    if (const auto *other = dynamic_cast<const Variable *>(type.get());
-        (other != nullptr) && other->Name == name)
+    if (const auto *other = dynamic_cast<const Variable *>(type.get()); (other != nullptr) && other->Name == name)
       return;
 
     Types[name] = type;
diff --git a/compiler/type/type.hpp b/compiler/type/type.hpp
index 9ff4ac4..6daadc2 100644
--- a/compiler/type/type.hpp
+++ b/compiler/type/type.hpp
@@ -30,11 +30,11 @@
 #ifndef SWALLOW_COMPILER_TYPE_H
 #define SWALLOW_COMPILER_TYPE_H
 
-#include "result/result.hpp"
 #include <cstdint>
 #include <map>
 #include <memory>
 #include <string>
+#include <tl/expected.hpp>
 
 namespace swallow::compiler::type
 {
@@ -105,8 +105,7 @@ namespace swallow::compiler::type
     auto NewArrowType() noexcept -> Type::Ptr;
 
     /** Find values for placeholder variables such that they can equal. */
-    auto Unify(Type::Ptr left, Type::Ptr right) noexcept
-      -> utils::Result<utils::Void, utils::Void>;
+    auto Unify(Type::Ptr left, Type::Ptr right) noexcept -> tl::expected<std::nullptr_t, std::nullptr_t>;
 
     /** Get to the bottom of a chain of equations. */
     auto Resolve(Type::Ptr type, Variable *&var) const noexcept -> Type::Ptr;
diff --git a/compiler/utils/binop/binop.hpp b/compiler/utils/binop.hpp
similarity index 100%
rename from compiler/utils/binop/binop.hpp
rename to compiler/utils/binop.hpp
diff --git a/compiler/utils/dump.cpp b/compiler/utils/dump.cpp
deleted file mode 100644
index d5a5331..0000000
--- a/compiler/utils/dump.cpp
+++ /dev/null
@@ -1,10 +0,0 @@
-#include "dump.h"
-
-namespace swallow::compiler::utils::dump
-{
-  void dumpIndent(uint8_t n, std::ostream &to) noexcept
-  {
-    while ((n--) != 0U)
-      to << "  ";
-  }
-} // namespace swallow::compiler::utils::dump
\ No newline at end of file
diff --git a/compiler/utils/dump.h b/compiler/utils/dump.h
deleted file mode 100644
index a1dfac7..0000000
--- a/compiler/utils/dump.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#ifndef SWALLOW_UTILS_DUMP_H
-#define SWALLOW_UTILS_DUMP_H
-
-#include <cstdint>
-#include <iostream>
-
-namespace swallow::compiler::utils::dump
-{
-  void dumpIndent(uint8_t n, std::ostream &to) noexcept;
-} // namespace swallow::compiler::utils::dump
-
-#endif
\ No newline at end of file
diff --git a/compiler/utils/panic/panic.hpp b/compiler/utils/dump.hpp
similarity index 65%
rename from compiler/utils/panic/panic.hpp
rename to compiler/utils/dump.hpp
index 3b70edd..5d5b050 100644
--- a/compiler/utils/panic/panic.hpp
+++ b/compiler/utils/dump.hpp
@@ -27,41 +27,19 @@
 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef SWALLOW_UTILS_PANIC_H
-#define SWALLOW_UTILS_PANIC_H
+#ifndef SWALLOW_COMPILER_UTILS_DUMP_H
+#define SWALLOW_COMPILER_UTILS_DUMP_H
 
-#include <exception>
-#include <format>
+#include <cstdint>
 #include <iostream>
-#include <source_location>
 
-namespace swallow::compiler::utils
+namespace swallow::compiler::utils::dump
 {
-  template <class... Args> struct PanicFormat
+  static void DumpIndent(uint8_t n, std::ostream &to) noexcept
   {
-    template <class T>
-    consteval PanicFormat(
-
-      const T &s, std::source_location loc = std::source_location::current()) noexcept
-      : fmt{s}, loc{loc}
-    {}
-
-    std::format_string<Args...> fmt;
-    std::source_location        loc;
-  };
-
-  template <class... Args>
-  [[noreturn]] void
-    Panic(PanicFormat<std::type_identity_t<Args>...> fmt, Args &&...args) noexcept
-  {
-    auto msg = std::format(
-      "{}:{} Panic: {}\n",
-      fmt.loc.file_name(),
-      fmt.loc.line(),
-      std::format(fmt.fmt, std::forward<Args>(args)...));
-    std::cout << msg.c_str() << std::endl;
-    std::terminate();
+    while ((n--) != 0U)
+      to << "  ";
   }
-} // namespace swallow::compiler::utils
+} // namespace swallow::compiler::utils::dump
 
 #endif
\ No newline at end of file
diff --git a/compiler/utils/optional/optional.hpp b/compiler/utils/optional/optional.hpp
deleted file mode 100644
index 54518f2..0000000
--- a/compiler/utils/optional/optional.hpp
+++ /dev/null
@@ -1,2321 +0,0 @@
-
-///
-// optional - An implementation of std::optional with extensions
-// Written in 2017 by Sy Brand (tartanllama@gmail.com, @TartanLlama)
-//
-// Documentation available at https://tl.tartanllama.xyz/
-//
-// To the extent possible under law, the author(s) have dedicated all
-// copyright and related and neighboring rights to this software to the
-// public domain worldwide. This software is distributed without any warranty.
-//
-// You should have received a copy of the CC0 Public Domain Dedication
-// along with this software. If not, see
-// <http://creativecommons.org/publicdomain/zero/1.0/>.
-///
-
-#ifndef TL_OPTIONAL_HPP
-#define TL_OPTIONAL_HPP
-
-#define TL_OPTIONAL_VERSION_MAJOR 1
-#define TL_OPTIONAL_VERSION_MINOR 1
-#define TL_OPTIONAL_VERSION_PATCH 0
-
-#include <exception>
-#include <functional>
-#include <type_traits>
-#include <utility>
-
-#if (defined(_MSC_VER) && _MSC_VER == 1900)
-#define TL_OPTIONAL_MSVC2015
-#endif
-
-#if (defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ <= 9 && !defined(__clang__))
-#define TL_OPTIONAL_GCC49
-#endif
-
-#if (defined(__GNUC__) && __GNUC__ == 5 && __GNUC_MINOR__ <= 4 && !defined(__clang__))
-#define TL_OPTIONAL_GCC54
-#endif
-
-#if (defined(__GNUC__) && __GNUC__ == 5 && __GNUC_MINOR__ <= 5 && !defined(__clang__))
-#define TL_OPTIONAL_GCC55
-#endif
-
-#if (defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ <= 9 && !defined(__clang__))
-// GCC < 5 doesn't support overloading on const&& for member functions
-#define TL_OPTIONAL_NO_CONSTRR
-
-// GCC < 5 doesn't support some standard C++11 type traits
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(T)                                   \
-  std::has_trivial_copy_constructor<T>::value
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_ASSIGNABLE(T) std::has_trivial_copy_assign<T>::value
-
-// This one will be different for GCC 5.7 if it's ever supported
-#define TL_OPTIONAL_IS_TRIVIALLY_DESTRUCTIBLE(T)    std::is_trivially_destructible<T>::value
-
-// GCC 5 < v < 8 has a bug in is_trivially_copy_constructible which breaks
-// std::vector for non-copyable types
-#elif (defined(__GNUC__) && __GNUC__ < 8 && !defined(__clang__))
-#ifndef TL_GCC_LESS_8_TRIVIALLY_COPY_CONSTRUCTIBLE_MUTEX
-#define TL_GCC_LESS_8_TRIVIALLY_COPY_CONSTRUCTIBLE_MUTEX
-
-namespace tl
-{
-  namespace detail
-  {
-    template <class T>
-    struct is_trivially_copy_constructible : std::is_trivially_copy_constructible<T>
-    {};
-#ifdef _GLIBCXX_VECTOR
-    template <class T, class A>
-    struct is_trivially_copy_constructible<std::vector<T, A>>
-      : std::is_trivially_copy_constructible<T>
-    {};
-#endif
-  } // namespace detail
-} // namespace tl
-#endif
-
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(T)                                   \
-  tl::detail::is_trivially_copy_constructible<T>::value
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_ASSIGNABLE(T)                                      \
-  std::is_trivially_copy_assignable<T>::value
-#define TL_OPTIONAL_IS_TRIVIALLY_DESTRUCTIBLE(T) std::is_trivially_destructible<T>::value
-#else
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(T)                                   \
-  std::is_trivially_copy_constructible<T>::value
-#define TL_OPTIONAL_IS_TRIVIALLY_COPY_ASSIGNABLE(T)                                      \
-  std::is_trivially_copy_assignable<T>::value
-#define TL_OPTIONAL_IS_TRIVIALLY_DESTRUCTIBLE(T) std::is_trivially_destructible<T>::value
-#endif
-
-#if __cplusplus > 201103L
-#define TL_OPTIONAL_CXX14
-#endif
-
-// constexpr implies const in C++11, not C++14
-#if (__cplusplus == 201103L || defined(TL_OPTIONAL_MSVC2015) || defined(TL_OPTIONAL_GCC49))
-#define TL_OPTIONAL_11_CONSTEXPR
-#else
-#define TL_OPTIONAL_11_CONSTEXPR constexpr
-#endif
-
-namespace tl
-{
-#ifndef TL_MONOSTATE_INPLACE_MUTEX
-#define TL_MONOSTATE_INPLACE_MUTEX
-
-  /// Used to represent an optional with no data; essentially a bool
-  class monostate
-  {};
-
-  ///  A tag type to tell optional to construct its value in-place
-  struct in_place_t
-  {
-    explicit in_place_t() = default;
-  };
-
-  /// A tag to tell optional to construct its value in-place
-  static constexpr in_place_t in_place{};
-#endif
-
-  template <class T> class optional;
-
-  namespace detail
-  {
-#ifndef TL_TRAITS_MUTEX
-#define TL_TRAITS_MUTEX
-    // C++14-style aliases for brevity
-    template <class T> using remove_const_t = typename std::remove_const<T>::type;
-    template <class T> using remove_reference_t = typename std::remove_reference<T>::type;
-    template <class T> using decay_t = typename std::decay<T>::type;
-    template <bool E, class T = void>
-    using enable_if_t = typename std::enable_if<E, T>::type;
-    template <bool B, class T, class F>
-    using conditional_t = typename std::conditional<B, T, F>::type;
-
-    // std::conjunction from C++17
-    template <class...> struct conjunction : std::true_type
-    {};
-
-    template <class B> struct conjunction<B> : B
-    {};
-
-    template <class B, class... Bs>
-    struct conjunction<B, Bs...>
-      : std::conditional<bool(B::value), conjunction<Bs...>, B>::type
-    {};
-
-#if defined(_LIBCPP_VERSION) && __cplusplus == 201103L
-#define TL_TRAITS_LIBCXX_MEM_FN_WORKAROUND
-#endif
-
-// In C++11 mode, there's an issue in libc++'s std::mem_fn
-// which results in a hard-error when using it in a noexcept expression
-// in some cases. This is a check to workaround the common failing case.
-#ifdef TL_TRAITS_LIBCXX_MEM_FN_WORKAROUND
-    template <class T> struct is_pointer_to_non_const_member_func : std::false_type
-    {};
-
-    template <class T, class Ret, class... Args>
-    struct is_pointer_to_non_const_member_func<Ret (T::*)(Args...)> : std::true_type
-    {};
-
-    template <class T, class Ret, class... Args>
-    struct is_pointer_to_non_const_member_func<Ret (T::*)(Args...) &> : std::true_type
-    {};
-
-    template <class T, class Ret, class... Args>
-    struct is_pointer_to_non_const_member_func<Ret (T::*)(Args...) &&> : std::true_type
-    {};
-
-    template <class T, class Ret, class... Args>
-    struct is_pointer_to_non_const_member_func<Ret (T::*)(Args...) volatile>
-      : std::true_type
-    {};
-
-    template <class T, class Ret, class... Args>
-    struct is_pointer_to_non_const_member_func<Ret (T::*)(Args...) volatile &>
-      : std::true_type
-    {};
-
-    template <class T, class Ret, class... Args>
-    struct is_pointer_to_non_const_member_func<Ret (T::*)(Args...) volatile &&>
-      : std::true_type
-    {};
-
-    template <class T> struct is_const_or_const_ref : std::false_type
-    {};
-
-    template <class T> struct is_const_or_const_ref<T const &> : std::true_type
-    {};
-
-    template <class T> struct is_const_or_const_ref<T const> : std::true_type
-    {};
-#endif
-
-    // std::invoke from C++17
-    // https://stackoverflow.com/questions/38288042/c11-14-invoke-workaround
-    template <
-      typename Fn,
-      typename... Args,
-#ifdef TL_TRAITS_LIBCXX_MEM_FN_WORKAROUND
-      typename = enable_if_t<
-        !(is_pointer_to_non_const_member_func<Fn>::value
-          && is_const_or_const_ref<Args...>::value)>,
-#endif
-      typename = enable_if_t<std::is_member_pointer<decay_t<Fn>>::value>,
-      int = 0>
-    constexpr auto invoke(Fn &&f, Args &&...args) noexcept(
-      noexcept(std::mem_fn(f)(std::forward<Args>(args)...)))
-      -> decltype(std::mem_fn(f)(std::forward<Args>(args)...))
-    {
-      return std::mem_fn(f)(std::forward<Args>(args)...);
-    }
-
-    template <
-      typename Fn,
-      typename... Args,
-      typename = enable_if_t<!std::is_member_pointer<decay_t<Fn>>::value>>
-    constexpr auto invoke(Fn &&f, Args &&...args) noexcept(
-      noexcept(std::forward<Fn>(f)(std::forward<Args>(args)...)))
-      -> decltype(std::forward<Fn>(f)(std::forward<Args>(args)...))
-    {
-      return std::forward<Fn>(f)(std::forward<Args>(args)...);
-    }
-
-    // std::invoke_result from C++17
-    template <class F, class, class... Us> struct invoke_result_impl;
-
-    template <class F, class... Us>
-    struct invoke_result_impl<
-      F,
-      decltype(detail::invoke(std::declval<F>(), std::declval<Us>()...), void()),
-      Us...>
-    {
-      using type = decltype(detail::invoke(std::declval<F>(), std::declval<Us>()...));
-    };
-
-    template <class F, class... Us>
-    using invoke_result = invoke_result_impl<F, void, Us...>;
-
-    template <class F, class... Us>
-    using invoke_result_t = typename invoke_result<F, Us...>::type;
-
-#if defined(_MSC_VER) && _MSC_VER <= 1900
-    // TODO make a version which works with MSVC 2015
-    template <class T, class U = T> struct is_swappable : std::true_type
-    {};
-
-    template <class T, class U = T> struct is_nothrow_swappable : std::true_type
-    {};
-#else
-    // https://stackoverflow.com/questions/26744589/what-is-a-proper-way-to-implement-is-swappable-to-test-for-the-swappable-concept
-    namespace swap_adl_tests
-    {
-      // if swap ADL finds this then it would call std::swap otherwise (same
-      // signature)
-      struct tag
-      {};
-
-      template <class T> tag                swap(T &, T &);
-      template <class T, std::size_t N> tag swap(T (&a)[N], T (&b)[N]);
-
-      // helper functions to test if an unqualified swap is possible, and if it
-      // becomes std::swap
-      template <class, class> std::false_type can_swap(...) noexcept(false);
-      template <
-        class T,
-        class U,
-        class = decltype(swap(std::declval<T &>(), std::declval<U &>()))>
-      std::true_type
-        can_swap(int) noexcept(noexcept(swap(std::declval<T &>(), std::declval<U &>())));
-
-      template <class, class> std::false_type uses_std(...);
-      template <class T, class U>
-      std::is_same<decltype(swap(std::declval<T &>(), std::declval<U &>())), tag>
-        uses_std(int);
-
-      template <class T>
-      struct is_std_swap_noexcept : std::integral_constant<
-                                      bool,
-                                      std::is_nothrow_move_constructible<T>::value
-                                        && std::is_nothrow_move_assignable<T>::value>
-      {};
-
-      template <class T, std::size_t N>
-      struct is_std_swap_noexcept<T[N]> : is_std_swap_noexcept<T>
-      {};
-
-      template <class T, class U>
-      struct is_adl_swap_noexcept
-        : std::integral_constant<bool, noexcept(can_swap<T, U>(0))>
-      {};
-    } // namespace swap_adl_tests
-
-    template <class T, class U = T>
-    struct is_swappable
-      : std::integral_constant<
-          bool,
-          decltype(detail::swap_adl_tests::can_swap<T, U>(0))::value
-            && (!decltype(detail::swap_adl_tests::uses_std<T, U>(0))::value || (std::is_move_assignable<T>::value && std::is_move_constructible<T>::value))>
-    {};
-
-    template <class T, std::size_t N>
-    struct is_swappable<T[N], T[N]>
-      : std::integral_constant<
-          bool,
-          decltype(detail::swap_adl_tests::can_swap<T[N], T[N]>(0))::value
-            && (!decltype(detail::swap_adl_tests::uses_std<T[N], T[N]>(0))::value || is_swappable<T, T>::value)>
-    {};
-
-    template <class T, class U = T>
-    struct is_nothrow_swappable
-      : std::integral_constant<
-          bool,
-          is_swappable<T, U>::value
-            && ((decltype(detail::swap_adl_tests::uses_std<T, U>(0))::value && detail::swap_adl_tests::is_std_swap_noexcept<T>::value) || (!decltype(detail::swap_adl_tests::uses_std<T, U>(0))::value && detail::swap_adl_tests::is_adl_swap_noexcept<T, U>::value))>
-    {};
-#endif
-#endif
-
-    // std::void_t from C++17
-    template <class...> struct voider
-    {
-      using type = void;
-    };
-    template <class... Ts> using void_t = typename voider<Ts...>::type;
-
-    // Trait for checking if a type is a tl::optional
-    template <class T> struct is_optional_impl : std::false_type
-    {};
-
-    template <class T> struct is_optional_impl<optional<T>> : std::true_type
-    {};
-    template <class T> using is_optional = is_optional_impl<decay_t<T>>;
-
-    // Change void to tl::monostate
-    template <class U>
-    using fixup_void = conditional_t<std::is_void<U>::value, monostate, U>;
-
-    template <class F, class U, class = invoke_result_t<F, U>>
-    using get_map_return = optional<fixup_void<invoke_result_t<F, U>>>;
-
-    // Check if invoking F for some Us returns void
-    template <class F, class = void, class... U> struct returns_void_impl;
-
-    template <class F, class... U>
-    struct returns_void_impl<F, void_t<invoke_result_t<F, U...>>, U...>
-      : std::is_void<invoke_result_t<F, U...>>
-    {};
-    template <class F, class... U> using returns_void = returns_void_impl<F, void, U...>;
-
-    template <class T, class... U>
-    using enable_if_ret_void = enable_if_t<returns_void<T &&, U...>::value>;
-
-    template <class T, class... U>
-    using disable_if_ret_void = enable_if_t<!returns_void<T &&, U...>::value>;
-
-    template <class T, class U>
-    using enable_forward_value = detail::enable_if_t<
-      std::is_constructible<T, U &&>::value
-      && !std::is_same<detail::decay_t<U>, in_place_t>::value
-      && !std::is_same<optional<T>, detail::decay_t<U>>::value>;
-
-    template <class T, class U, class Other>
-    using enable_from_other = detail::enable_if_t<
-      std::is_constructible<T, Other>::value
-      && !std::is_constructible<T, optional<U> &>::value
-      && !std::is_constructible<T, optional<U> &&>::value
-      && !std::is_constructible<T, const optional<U> &>::value
-      && !std::is_constructible<T, const optional<U> &&>::value
-      && !std::is_convertible<optional<U> &, T>::value
-      && !std::is_convertible<optional<U> &&, T>::value
-      && !std::is_convertible<const optional<U> &, T>::value
-      && !std::is_convertible<const optional<U> &&, T>::value>;
-
-    template <class T, class U>
-    using enable_assign_forward = detail::enable_if_t<
-      !std::is_same<optional<T>, detail::decay_t<U>>::value
-      && !detail::conjunction<std::is_scalar<T>, std::is_same<T, detail::decay_t<U>>>::value
-      && std::is_constructible<T, U>::value && std::is_assignable<T &, U>::value>;
-
-    template <class T, class U, class Other>
-    using enable_assign_from_other = detail::enable_if_t<
-      std::is_constructible<T, Other>::value && std::is_assignable<T &, Other>::value
-      && !std::is_constructible<T, optional<U> &>::value
-      && !std::is_constructible<T, optional<U> &&>::value
-      && !std::is_constructible<T, const optional<U> &>::value
-      && !std::is_constructible<T, const optional<U> &&>::value
-      && !std::is_convertible<optional<U> &, T>::value
-      && !std::is_convertible<optional<U> &&, T>::value
-      && !std::is_convertible<const optional<U> &, T>::value
-      && !std::is_convertible<const optional<U> &&, T>::value
-      && !std::is_assignable<T &, optional<U> &>::value
-      && !std::is_assignable<T &, optional<U> &&>::value
-      && !std::is_assignable<T &, const optional<U> &>::value
-      && !std::is_assignable<T &, const optional<U> &&>::value>;
-
-    // The storage base manages the actual storage, and correctly propagates
-    // trivial destruction from T. This case is for when T is not trivially
-    // destructible.
-    template <class T, bool = ::std::is_trivially_destructible<T>::value>
-    struct optional_storage_base
-    {
-      TL_OPTIONAL_11_CONSTEXPR optional_storage_base() noexcept
-        : m_dummy(), m_has_value(false)
-      {}
-
-      template <class... U>
-      TL_OPTIONAL_11_CONSTEXPR optional_storage_base(in_place_t, U &&...u)
-        : m_value(std::forward<U>(u)...), m_has_value(true)
-      {}
-
-      ~optional_storage_base()
-      {
-        if (m_has_value)
-          {
-            m_value.~T();
-            m_has_value = false;
-          }
-      }
-
-      struct dummy
-      {};
-
-      union
-      {
-        dummy m_dummy;
-        T     m_value;
-      };
-
-      bool m_has_value;
-    };
-
-    // This case is for when T is trivially destructible.
-    template <class T> struct optional_storage_base<T, true>
-    {
-      TL_OPTIONAL_11_CONSTEXPR optional_storage_base() noexcept
-        : m_dummy(), m_has_value(false)
-      {}
-
-      template <class... U>
-      TL_OPTIONAL_11_CONSTEXPR optional_storage_base(in_place_t, U &&...u)
-        : m_value(std::forward<U>(u)...), m_has_value(true)
-      {}
-
-      // No destructor, so this class is trivially destructible
-
-      struct dummy
-      {};
-
-      union
-      {
-        dummy m_dummy;
-        T     m_value;
-      };
-
-      bool m_has_value = false;
-    };
-
-    // This base class provides some handy member functions which can be used in
-    // further derived classes
-    template <class T> struct optional_operations_base : optional_storage_base<T>
-    {
-      using optional_storage_base<T>::optional_storage_base;
-
-      void hard_reset() noexcept
-      {
-        get().~T();
-        this->m_has_value = false;
-      }
-
-      template <class... Args> void construct(Args &&...args)
-      {
-        new (std::addressof(this->m_value)) T(std::forward<Args>(args)...);
-        this->m_has_value = true;
-      }
-
-      template <class Opt> void assign(Opt &&rhs)
-      {
-        if (this->has_value())
-          {
-            if (rhs.has_value())
-              {
-                this->m_value = std::forward<Opt>(rhs).get();
-              }
-            else
-              {
-                this->m_value.~T();
-                this->m_has_value = false;
-              }
-          }
-
-        else if (rhs.has_value())
-          {
-            construct(std::forward<Opt>(rhs).get());
-          }
-      }
-
-      bool has_value() const { return this->m_has_value; }
-
-      TL_OPTIONAL_11_CONSTEXPR T &get() & { return this->m_value; }
-
-      TL_OPTIONAL_11_CONSTEXPR const T &get() const & { return this->m_value; }
-
-      TL_OPTIONAL_11_CONSTEXPR T &&get() && { return std::move(this->m_value); }
-#ifndef TL_OPTIONAL_NO_CONSTRR
-      constexpr const T &&get() const && { return std::move(this->m_value); }
-#endif
-    };
-
-    // This class manages conditionally having a trivial copy constructor
-    // This specialization is for when T is trivially copy constructible
-    template <class T, bool = TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(T)>
-    struct optional_copy_base : optional_operations_base<T>
-    {
-      using optional_operations_base<T>::optional_operations_base;
-    };
-
-    // This specialization is for when T is not trivially copy constructible
-    template <class T> struct optional_copy_base<T, false> : optional_operations_base<T>
-    {
-      using optional_operations_base<T>::optional_operations_base;
-
-      optional_copy_base() = default;
-
-      optional_copy_base(const optional_copy_base &rhs) : optional_operations_base<T>()
-      {
-        if (rhs.has_value())
-          this->construct(rhs.get());
-        else
-          this->m_has_value = false;
-      }
-
-      optional_copy_base(optional_copy_base &&rhs) = default;
-      optional_copy_base &operator=(const optional_copy_base &rhs) = default;
-      optional_copy_base &operator=(optional_copy_base &&rhs) = default;
-    };
-
-// This class manages conditionally having a trivial move constructor
-// Unfortunately there's no way to achieve this in GCC < 5 AFAIK, since it
-// doesn't implement an analogue to std::is_trivially_move_constructible. We
-// have to make do with a non-trivial move constructor even if T is trivially
-// move constructible
-#ifndef TL_OPTIONAL_GCC49
-    template <class T, bool = std::is_trivially_move_constructible<T>::value>
-    struct optional_move_base : optional_copy_base<T>
-    {
-      using optional_copy_base<T>::optional_copy_base;
-    };
-#else
-    template <class T, bool = false> struct optional_move_base;
-#endif
-    template <class T> struct optional_move_base<T, false> : optional_copy_base<T>
-    {
-      using optional_copy_base<T>::optional_copy_base;
-
-      optional_move_base() = default;
-      optional_move_base(const optional_move_base &rhs) = default;
-
-      optional_move_base(optional_move_base &&rhs) noexcept(
-        std::is_nothrow_move_constructible<T>::value)
-      {
-        if (rhs.has_value())
-          this->construct(std::move(rhs.get()));
-        else
-          this->m_has_value = false;
-      }
-
-      optional_move_base &operator=(const optional_move_base &rhs) = default;
-      optional_move_base &operator=(optional_move_base &&rhs) = default;
-    };
-
-    // This class manages conditionally having a trivial copy assignment
-    // operator
-    template <
-      class T,
-      bool = TL_OPTIONAL_IS_TRIVIALLY_COPY_ASSIGNABLE(T)
-             && TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(T)
-             && TL_OPTIONAL_IS_TRIVIALLY_DESTRUCTIBLE(T)>
-    struct optional_copy_assign_base : optional_move_base<T>
-    {
-      using optional_move_base<T>::optional_move_base;
-    };
-
-    template <class T> struct optional_copy_assign_base<T, false> : optional_move_base<T>
-    {
-      using optional_move_base<T>::optional_move_base;
-
-      optional_copy_assign_base() = default;
-      optional_copy_assign_base(const optional_copy_assign_base &rhs) = default;
-
-      optional_copy_assign_base(optional_copy_assign_base &&rhs) = default;
-
-      optional_copy_assign_base &operator=(const optional_copy_assign_base &rhs)
-      {
-        this->assign(rhs);
-        return *this;
-      }
-
-      optional_copy_assign_base &operator=(optional_copy_assign_base &&rhs) = default;
-    };
-
-// This class manages conditionally having a trivial move assignment operator
-// Unfortunately there's no way to achieve this in GCC < 5 AFAIK, since it
-// doesn't implement an analogue to std::is_trivially_move_assignable. We have
-// to make do with a non-trivial move assignment operator even if T is trivially
-// move assignable
-#ifndef TL_OPTIONAL_GCC49
-    template <
-      class T,
-      bool = std::is_trivially_destructible<T>::value
-             && std::is_trivially_move_constructible<T>::value
-             && std::is_trivially_move_assignable<T>::value>
-    struct optional_move_assign_base : optional_copy_assign_base<T>
-    {
-      using optional_copy_assign_base<T>::optional_copy_assign_base;
-    };
-#else
-    template <class T, bool = false> struct optional_move_assign_base;
-#endif
-
-    template <class T>
-    struct optional_move_assign_base<T, false> : optional_copy_assign_base<T>
-    {
-      using optional_copy_assign_base<T>::optional_copy_assign_base;
-
-      optional_move_assign_base() = default;
-      optional_move_assign_base(const optional_move_assign_base &rhs) = default;
-
-      optional_move_assign_base(optional_move_assign_base &&rhs) = default;
-
-      optional_move_assign_base &operator=(const optional_move_assign_base &rhs) = default;
-
-      optional_move_assign_base &operator=(optional_move_assign_base &&rhs) noexcept(
-        std::is_nothrow_move_constructible<T>::value
-        && std::is_nothrow_move_assignable<T>::value)
-      {
-        this->assign(std::move(rhs));
-        return *this;
-      }
-    };
-
-    // optional_delete_ctor_base will conditionally delete copy and move
-    // constructors depending on whether T is copy/move constructible
-    template <
-      class T,
-      bool EnableCopy = std::is_copy_constructible<T>::value,
-      bool EnableMove = std::is_move_constructible<T>::value>
-    struct optional_delete_ctor_base
-    {
-      optional_delete_ctor_base() = default;
-      optional_delete_ctor_base(const optional_delete_ctor_base &) = default;
-      optional_delete_ctor_base(optional_delete_ctor_base &&) noexcept = default;
-      optional_delete_ctor_base &operator=(const optional_delete_ctor_base &) = default;
-      optional_delete_ctor_base &
-        operator=(optional_delete_ctor_base &&) noexcept = default;
-    };
-
-    template <class T> struct optional_delete_ctor_base<T, true, false>
-    {
-      optional_delete_ctor_base() = default;
-      optional_delete_ctor_base(const optional_delete_ctor_base &) = default;
-      optional_delete_ctor_base(optional_delete_ctor_base &&) noexcept = delete;
-      optional_delete_ctor_base &operator=(const optional_delete_ctor_base &) = default;
-      optional_delete_ctor_base &
-        operator=(optional_delete_ctor_base &&) noexcept = default;
-    };
-
-    template <class T> struct optional_delete_ctor_base<T, false, true>
-    {
-      optional_delete_ctor_base() = default;
-      optional_delete_ctor_base(const optional_delete_ctor_base &) = delete;
-      optional_delete_ctor_base(optional_delete_ctor_base &&) noexcept = default;
-      optional_delete_ctor_base &operator=(const optional_delete_ctor_base &) = default;
-      optional_delete_ctor_base &
-        operator=(optional_delete_ctor_base &&) noexcept = default;
-    };
-
-    template <class T> struct optional_delete_ctor_base<T, false, false>
-    {
-      optional_delete_ctor_base() = default;
-      optional_delete_ctor_base(const optional_delete_ctor_base &) = delete;
-      optional_delete_ctor_base(optional_delete_ctor_base &&) noexcept = delete;
-      optional_delete_ctor_base &operator=(const optional_delete_ctor_base &) = default;
-      optional_delete_ctor_base &
-        operator=(optional_delete_ctor_base &&) noexcept = default;
-    };
-
-    // optional_delete_assign_base will conditionally delete copy and move
-    // constructors depending on whether T is copy/move constructible +
-    // assignable
-    template <
-      class T,
-      bool EnableCopy =
-        (std::is_copy_constructible<T>::value && std::is_copy_assignable<T>::value),
-      bool EnableMove =
-        (std::is_move_constructible<T>::value && std::is_move_assignable<T>::value)>
-    struct optional_delete_assign_base
-    {
-      optional_delete_assign_base() = default;
-      optional_delete_assign_base(const optional_delete_assign_base &) = default;
-      optional_delete_assign_base(optional_delete_assign_base &&) noexcept = default;
-      optional_delete_assign_base &
-        operator=(const optional_delete_assign_base &) = default;
-      optional_delete_assign_base &
-        operator=(optional_delete_assign_base &&) noexcept = default;
-    };
-
-    template <class T> struct optional_delete_assign_base<T, true, false>
-    {
-      optional_delete_assign_base() = default;
-      optional_delete_assign_base(const optional_delete_assign_base &) = default;
-      optional_delete_assign_base(optional_delete_assign_base &&) noexcept = default;
-      optional_delete_assign_base &
-        operator=(const optional_delete_assign_base &) = default;
-      optional_delete_assign_base &
-        operator=(optional_delete_assign_base &&) noexcept = delete;
-    };
-
-    template <class T> struct optional_delete_assign_base<T, false, true>
-    {
-      optional_delete_assign_base() = default;
-      optional_delete_assign_base(const optional_delete_assign_base &) = default;
-      optional_delete_assign_base(optional_delete_assign_base &&) noexcept = default;
-      optional_delete_assign_base &operator=(const optional_delete_assign_base &) = delete;
-      optional_delete_assign_base &
-        operator=(optional_delete_assign_base &&) noexcept = default;
-    };
-
-    template <class T> struct optional_delete_assign_base<T, false, false>
-    {
-      optional_delete_assign_base() = default;
-      optional_delete_assign_base(const optional_delete_assign_base &) = default;
-      optional_delete_assign_base(optional_delete_assign_base &&) noexcept = default;
-      optional_delete_assign_base &operator=(const optional_delete_assign_base &) = delete;
-      optional_delete_assign_base &
-        operator=(optional_delete_assign_base &&) noexcept = delete;
-    };
-
-  } // namespace detail
-
-  /// A tag type to represent an empty optional
-  struct nullopt_t
-  {
-    struct do_not_use
-    {};
-
-    constexpr explicit nullopt_t(do_not_use, do_not_use) noexcept {}
-  };
-
-  /// Represents an empty optional
-  static constexpr nullopt_t nullopt{nullopt_t::do_not_use{}, nullopt_t::do_not_use{}};
-
-  class bad_optional_access : public std::exception
-  {
-  public:
-    bad_optional_access() = default;
-
-    const char *what() const noexcept { return "Optional has no value"; }
-  };
-
-  /// An optional object is an object that contains the storage for another
-  /// object and manages the lifetime of this contained object, if any. The
-  /// contained object may be initialized after the optional object has been
-  /// initialized, and may be destroyed before the optional object has been
-  /// destroyed. The initialization state of the contained object is tracked by
-  /// the optional object.
-  template <class T>
-  class optional : private detail::optional_move_assign_base<T>,
-                   private detail::optional_delete_ctor_base<T>,
-                   private detail::optional_delete_assign_base<T>
-  {
-    using base = detail::optional_move_assign_base<T>;
-
-    static_assert(
-      !std::is_same<T, in_place_t>::value,
-      "instantiation of optional with in_place_t is ill-formed");
-    static_assert(
-      !std::is_same<detail::decay_t<T>, nullopt_t>::value,
-      "instantiation of optional with nullopt_t is ill-formed");
-
-  public:
-// The different versions for C++14 and 11 are needed because deduced return
-// types are not SFINAE-safe. This provides better support for things like
-// generic lambdas. C.f.
-// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0826r0.html
-#if defined(TL_OPTIONAL_CXX14) && !defined(TL_OPTIONAL_GCC49)                            \
-  && !defined(TL_OPTIONAL_GCC54) && !defined(TL_OPTIONAL_GCC55)
-    /// Carries out some operation which returns an optional on the stored
-    /// object if there is one.
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto and_then(F &&f) &
-    {
-      using result = detail::invoke_result_t<F, T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto and_then(F &&f) &&
-    {
-      using result = detail::invoke_result_t<F, T &&>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : result(nullopt);
-    }
-
-    template <class F> constexpr auto and_then(F &&f) const &
-    {
-      using result = detail::invoke_result_t<F, const T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F> constexpr auto and_then(F &&f) const &&
-    {
-      using result = detail::invoke_result_t<F, const T &&>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : result(nullopt);
-    }
-#endif
-#else
-    /// Carries out some operation which returns an optional on the stored
-    /// object if there is one.
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t<F, T &> and_then(F &&f) &
-    {
-      using result = detail::invoke_result_t<F, T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t<F, T &&> and_then(F &&f) &&
-    {
-      using result = detail::invoke_result_t<F, T &&>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : result(nullopt);
-    }
-
-    template <class F>
-    constexpr detail::invoke_result_t<F, const T &> and_then(F &&f) const &
-    {
-      using result = detail::invoke_result_t<F, const T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F>
-    constexpr detail::invoke_result_t<F, const T &&> and_then(F &&f) const &&
-    {
-      using result = detail::invoke_result_t<F, const T &&>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : result(nullopt);
-    }
-#endif
-#endif
-
-#if defined(TL_OPTIONAL_CXX14) && !defined(TL_OPTIONAL_GCC49)                            \
-  && !defined(TL_OPTIONAL_GCC54) && !defined(TL_OPTIONAL_GCC55)
-    /// Carries out some operation on the stored object if there is one.
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto map(F &&f) &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto map(F &&f) &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto map(F &&f) const &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto map(F &&f) const &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#else
-    /// Carries out some operation on the stored object if there is one.
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(optional_map_impl(
-      std::declval<optional &>(), std::declval<F &&>()))
-      map(F &&f) &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(optional_map_impl(
-      std::declval<optional &&>(), std::declval<F &&>()))
-      map(F &&f) &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F>
-    constexpr decltype(optional_map_impl(
-      std::declval<const optional &>(), std::declval<F &&>()))
-      map(F &&f) const &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F>
-    constexpr decltype(optional_map_impl(
-      std::declval<const optional &&>(), std::declval<F &&>()))
-      map(F &&f) const &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#endif
-#endif
-
-#if defined(TL_OPTIONAL_CXX14) && !defined(TL_OPTIONAL_GCC49)                            \
-  && !defined(TL_OPTIONAL_GCC54) && !defined(TL_OPTIONAL_GCC55)
-    /// Carries out some operation on the stored object if there is one.
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto transform(F &&f) &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto transform(F &&f) &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto transform(F &&f) const &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto transform(F &&f) const &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#else
-    /// Carries out some operation on the stored object if there is one.
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(optional_map_impl(
-      std::declval<optional &>(), std::declval<F &&>()))
-      transform(F &&f) &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(optional_map_impl(
-      std::declval<optional &&>(), std::declval<F &&>()))
-      transform(F &&f) &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F>
-    constexpr decltype(optional_map_impl(
-      std::declval<const optional &>(), std::declval<F &&>()))
-      transform(F &&f) const &
-    {
-      return optional_map_impl(*this, std::forward<F>(f));
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F>
-    constexpr decltype(optional_map_impl(
-      std::declval<const optional &&>(), std::declval<F &&>()))
-      transform(F &&f) const &&
-    {
-      return optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#endif
-#endif
-
-    /// Calls `f` if the optional is empty
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) &
-    {
-      if (has_value())
-        return *this;
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) &
-    {
-      return has_value() ? *this : std::forward<F>(f)();
-    }
-
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) &&
-    {
-      if (has_value())
-        return std::move(*this);
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) &&
-    {
-      return has_value() ? std::move(*this) : std::forward<F>(f)();
-    }
-
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) const &
-    {
-      if (has_value())
-        return *this;
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) const &
-    {
-      return has_value() ? *this : std::forward<F>(f)();
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) const &&
-    {
-      if (has_value())
-        return std::move(*this);
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) const &&
-    {
-      return has_value() ? std::move(*this) : std::forward<F>(f)();
-    }
-#endif
-
-    /// Maps the stored value with `f` if there is one, otherwise returns `u`.
-    template <class F, class U> U map_or(F &&f, U &&u) &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u);
-    }
-
-    template <class F, class U> U map_or(F &&f, U &&u) &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u);
-    }
-
-    template <class F, class U> U map_or(F &&f, U &&u) const &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F, class U> U map_or(F &&f, U &&u) const &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u);
-    }
-#endif
-
-    /// Maps the stored value with `f` if there is one, otherwise calls
-    /// `u` and returns the result.
-    template <class F, class U> detail::invoke_result_t<U> map_or_else(F &&f, U &&u) &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u)();
-    }
-
-    template <class F, class U> detail::invoke_result_t<U> map_or_else(F &&f, U &&u) &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u)();
-    }
-
-    template <class F, class U>
-    detail::invoke_result_t<U> map_or_else(F &&f, U &&u) const &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u)();
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F, class U>
-    detail::invoke_result_t<U> map_or_else(F &&f, U &&u) const &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u)();
-    }
-#endif
-
-    /// Returns `u` if `*this` has a value, otherwise an empty optional.
-    template <class U>
-    constexpr optional<typename std::decay<U>::type> conjunction(U &&u) const
-    {
-      using result = optional<detail::decay_t<U>>;
-      return has_value() ? result{u} : result{nullopt};
-    }
-
-    /// Returns `rhs` if `*this` is empty, otherwise the current value.
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(const optional &rhs) &
-    {
-      return has_value() ? *this : rhs;
-    }
-
-    constexpr optional disjunction(const optional &rhs) const &
-    {
-      return has_value() ? *this : rhs;
-    }
-
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(const optional &rhs) &&
-    {
-      return has_value() ? std::move(*this) : rhs;
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    constexpr optional disjunction(const optional &rhs) const &&
-    {
-      return has_value() ? std::move(*this) : rhs;
-    }
-#endif
-
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(optional &&rhs) &
-    {
-      return has_value() ? *this : std::move(rhs);
-    }
-
-    constexpr optional disjunction(optional &&rhs) const &
-    {
-      return has_value() ? *this : std::move(rhs);
-    }
-
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(optional &&rhs) &&
-    {
-      return has_value() ? std::move(*this) : std::move(rhs);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    constexpr optional disjunction(optional &&rhs) const &&
-    {
-      return has_value() ? std::move(*this) : std::move(rhs);
-    }
-#endif
-
-    /// Takes the value out of the optional, leaving it empty
-    optional take()
-    {
-      optional ret = std::move(*this);
-      reset();
-      return ret;
-    }
-
-    using value_type = T;
-
-    /// Constructs an optional that does not contain a value.
-    constexpr optional() noexcept = default;
-
-    constexpr optional(nullopt_t) noexcept {}
-
-    /// Copy constructor
-    ///
-    /// If `rhs` contains a value, the stored value is direct-initialized with
-    /// it. Otherwise, the constructed optional is empty.
-    TL_OPTIONAL_11_CONSTEXPR optional(const optional &rhs) = default;
-
-    /// Move constructor
-    ///
-    /// If `rhs` contains a value, the stored value is direct-initialized with
-    /// it. Otherwise, the constructed optional is empty.
-    TL_OPTIONAL_11_CONSTEXPR optional(optional &&rhs) = default;
-
-    /// Constructs the stored value in-place using the given arguments.
-    template <class... Args>
-    constexpr explicit optional(
-      detail::enable_if_t<std::is_constructible<T, Args...>::value, in_place_t>,
-      Args &&...args)
-      : base(in_place, std::forward<Args>(args)...)
-    {}
-
-    template <class U, class... Args>
-    TL_OPTIONAL_11_CONSTEXPR explicit optional(
-      detail::enable_if_t<
-        std::is_constructible<T, std::initializer_list<U> &, Args &&...>::value,
-        in_place_t>,
-      std::initializer_list<U> il,
-      Args &&...args)
-    {
-      this->construct(il, std::forward<Args>(args)...);
-    }
-
-    /// Constructs the stored value with `u`.
-    template <
-      class U = T,
-      detail::enable_if_t<std::is_convertible<U &&, T>::value> * = nullptr,
-      detail::enable_forward_value<T, U> * = nullptr>
-    constexpr optional(U &&u) : base(in_place, std::forward<U>(u))
-    {}
-
-    template <
-      class U = T,
-      detail::enable_if_t<!std::is_convertible<U &&, T>::value> * = nullptr,
-      detail::enable_forward_value<T, U> * = nullptr>
-    constexpr explicit optional(U &&u) : base(in_place, std::forward<U>(u))
-    {}
-
-    /// Converting copy constructor.
-    template <
-      class U,
-      detail::enable_from_other<T, U, const U &> * = nullptr,
-      detail::enable_if_t<std::is_convertible<const U &, T>::value> * = nullptr>
-    optional(const optional<U> &rhs)
-    {
-      if (rhs.has_value())
-        this->construct(*rhs);
-    }
-
-    template <
-      class U,
-      detail::enable_from_other<T, U, const U &> * = nullptr,
-      detail::enable_if_t<!std::is_convertible<const U &, T>::value> * = nullptr>
-    explicit optional(const optional<U> &rhs)
-    {
-      if (rhs.has_value())
-        this->construct(*rhs);
-    }
-
-    /// Converting move constructor.
-    template <
-      class U,
-      detail::enable_from_other<T, U, U &&> * = nullptr,
-      detail::enable_if_t<std::is_convertible<U &&, T>::value> * = nullptr>
-    optional(optional<U> &&rhs)
-    {
-      if (rhs.has_value())
-        this->construct(std::move(*rhs));
-    }
-
-    template <
-      class U,
-      detail::enable_from_other<T, U, U &&> * = nullptr,
-      detail::enable_if_t<!std::is_convertible<U &&, T>::value> * = nullptr>
-    explicit optional(optional<U> &&rhs)
-    {
-      if (rhs.has_value())
-        this->construct(std::move(*rhs));
-    }
-
-    /// Destroys the stored value if there is one.
-    ~optional() = default;
-
-    /// Assignment to empty.
-    ///
-    /// Destroys the current value if there is one.
-    optional &operator=(nullopt_t) noexcept
-    {
-      if (has_value())
-        {
-          this->m_value.~T();
-          this->m_has_value = false;
-        }
-
-      return *this;
-    }
-
-    /// Copy assignment.
-    ///
-    /// Copies the value from `rhs` if there is one. Otherwise resets the stored
-    /// value in `*this`.
-    optional &operator=(const optional &rhs) = default;
-
-    /// Move assignment.
-    ///
-    /// Moves the value from `rhs` if there is one. Otherwise resets the stored
-    /// value in `*this`.
-    optional &operator=(optional &&rhs) = default;
-
-    /// Assigns the stored value from `u`, destroying the old value if there was
-    /// one.
-    template <class U = T, detail::enable_assign_forward<T, U> * = nullptr>
-    optional &operator=(U &&u)
-    {
-      if (has_value())
-        this->m_value = std::forward<U>(u);
-      else
-        this->construct(std::forward<U>(u));
-
-      return *this;
-    }
-
-    /// Converting copy assignment operator.
-    ///
-    /// Copies the value from `rhs` if there is one. Otherwise resets the stored
-    /// value in `*this`.
-    template <class U, detail::enable_assign_from_other<T, U, const U &> * = nullptr>
-    optional &operator=(const optional<U> &rhs)
-    {
-      if (has_value())
-        if (rhs.has_value())
-          this->m_value = *rhs;
-        else
-          this->hard_reset();
-
-      else if (rhs.has_value())
-        this->construct(*rhs);
-
-      return *this;
-    }
-
-    // TODO check exception guarantee
-    /// Converting move assignment operator.
-    ///
-    /// Moves the value from `rhs` if there is one. Otherwise resets the stored
-    /// value in `*this`.
-    template <class U, detail::enable_assign_from_other<T, U, U> * = nullptr>
-    optional &operator=(optional<U> &&rhs)
-    {
-      if (has_value())
-        if (rhs.has_value())
-          this->m_value = std::move(*rhs);
-        else
-          this->hard_reset();
-
-      else if (rhs.has_value())
-        this->construct(std::move(*rhs));
-
-      return *this;
-    }
-
-    /// Constructs the value in-place, destroying the current one if there is
-    /// one.
-    template <class... Args> T &emplace(Args &&...args)
-    {
-      static_assert(
-        std::is_constructible<T, Args &&...>::value, "T must be constructible with Args");
-
-      *this = nullopt;
-      this->construct(std::forward<Args>(args)...);
-      return value();
-    }
-
-    template <class U, class... Args>
-    detail::enable_if_t<
-      std::is_constructible<T, std::initializer_list<U> &, Args &&...>::value,
-      T &>
-      emplace(std::initializer_list<U> il, Args &&...args)
-    {
-      *this = nullopt;
-      this->construct(il, std::forward<Args>(args)...);
-      return value();
-    }
-
-    /// Swaps this optional with the other.
-    ///
-    /// If neither optionals have a value, nothing happens.
-    /// If both have a value, the values are swapped.
-    /// If one has a value, it is moved to the other and the movee is left
-    /// valueless.
-    void swap(optional &rhs) noexcept(
-      std::is_nothrow_move_constructible<T>::value
-      && detail::is_nothrow_swappable<T>::value)
-    {
-      using std::swap;
-      if (has_value())
-        {
-          if (rhs.has_value())
-            {
-              swap(**this, *rhs);
-            }
-          else
-            {
-              new (std::addressof(rhs.m_value)) T(std::move(this->m_value));
-              this->m_value.T::~T();
-            }
-        }
-      else if (rhs.has_value())
-        {
-          new (std::addressof(this->m_value)) T(std::move(rhs.m_value));
-          rhs.m_value.T::~T();
-        }
-      swap(this->m_has_value, rhs.m_has_value);
-    }
-
-    /// Returns a pointer to the stored value
-    constexpr const T *operator->() const { return std::addressof(this->m_value); }
-
-    TL_OPTIONAL_11_CONSTEXPR T *operator->() { return std::addressof(this->m_value); }
-
-    /// Returns the stored value
-    TL_OPTIONAL_11_CONSTEXPR T &operator*() & { return this->m_value; }
-
-    constexpr const T &operator*() const & { return this->m_value; }
-
-    TL_OPTIONAL_11_CONSTEXPR T &&operator*() && { return std::move(this->m_value); }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    constexpr const T &&operator*() const && { return std::move(this->m_value); }
-#endif
-
-    /// Returns whether or not the optional has a value
-    constexpr bool has_value() const noexcept { return this->m_has_value; }
-
-    constexpr explicit operator bool() const noexcept { return this->m_has_value; }
-
-    /// Returns the contained value if there is one, otherwise throws
-    /// bad_optional_access
-    TL_OPTIONAL_11_CONSTEXPR T &value() &
-    {
-      if (has_value())
-        return this->m_value;
-      throw bad_optional_access();
-    }
-
-    TL_OPTIONAL_11_CONSTEXPR const T &value() const &
-    {
-      if (has_value())
-        return this->m_value;
-      throw bad_optional_access();
-    }
-
-    TL_OPTIONAL_11_CONSTEXPR T &&value() &&
-    {
-      if (has_value())
-        return std::move(this->m_value);
-      throw bad_optional_access();
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    TL_OPTIONAL_11_CONSTEXPR const T &&value() const &&
-    {
-      if (has_value())
-        return std::move(this->m_value);
-      throw bad_optional_access();
-    }
-#endif
-
-    /// Returns the stored value if there is one, otherwise returns `u`
-    template <class U> constexpr T value_or(U &&u) const &
-    {
-      static_assert(
-        std::is_copy_constructible<T>::value && std::is_convertible<U &&, T>::value,
-        "T must be copy constructible and convertible from U");
-      return has_value() ? **this : static_cast<T>(std::forward<U>(u));
-    }
-
-    template <class U> TL_OPTIONAL_11_CONSTEXPR T value_or(U &&u) &&
-    {
-      static_assert(
-        std::is_move_constructible<T>::value && std::is_convertible<U &&, T>::value,
-        "T must be move constructible and convertible from U");
-      return has_value() ? std::move(**this) : static_cast<T>(std::forward<U>(u));
-    }
-
-    /// Destroys the stored value if one exists, making the optional empty
-    void reset() noexcept
-    {
-      if (has_value())
-        {
-          this->m_value.~T();
-          this->m_has_value = false;
-        }
-    }
-  }; // namespace tl
-
-  /// Compares two optional objects
-  template <class T, class U>
-  inline constexpr bool operator==(const optional<T> &lhs, const optional<U> &rhs)
-  {
-    return lhs.has_value() == rhs.has_value() && (!lhs.has_value() || *lhs == *rhs);
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator!=(const optional<T> &lhs, const optional<U> &rhs)
-  {
-    return lhs.has_value() != rhs.has_value() || (lhs.has_value() && *lhs != *rhs);
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator<(const optional<T> &lhs, const optional<U> &rhs)
-  {
-    return rhs.has_value() && (!lhs.has_value() || *lhs < *rhs);
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator>(const optional<T> &lhs, const optional<U> &rhs)
-  {
-    return lhs.has_value() && (!rhs.has_value() || *lhs > *rhs);
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator<=(const optional<T> &lhs, const optional<U> &rhs)
-  {
-    return !lhs.has_value() || (rhs.has_value() && *lhs <= *rhs);
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator>=(const optional<T> &lhs, const optional<U> &rhs)
-  {
-    return !rhs.has_value() || (lhs.has_value() && *lhs >= *rhs);
-  }
-
-  /// Compares an optional to a `nullopt`
-  template <class T>
-  inline constexpr bool operator==(const optional<T> &lhs, nullopt_t) noexcept
-  {
-    return !lhs.has_value();
-  }
-
-  template <class T>
-  inline constexpr bool operator==(nullopt_t, const optional<T> &rhs) noexcept
-  {
-    return !rhs.has_value();
-  }
-
-  template <class T>
-  inline constexpr bool operator!=(const optional<T> &lhs, nullopt_t) noexcept
-  {
-    return lhs.has_value();
-  }
-
-  template <class T>
-  inline constexpr bool operator!=(nullopt_t, const optional<T> &rhs) noexcept
-  {
-    return rhs.has_value();
-  }
-
-  template <class T>
-  inline constexpr bool operator<(const optional<T> &, nullopt_t) noexcept
-  {
-    return false;
-  }
-
-  template <class T>
-  inline constexpr bool operator<(nullopt_t, const optional<T> &rhs) noexcept
-  {
-    return rhs.has_value();
-  }
-
-  template <class T>
-  inline constexpr bool operator<=(const optional<T> &lhs, nullopt_t) noexcept
-  {
-    return !lhs.has_value();
-  }
-
-  template <class T>
-  inline constexpr bool operator<=(nullopt_t, const optional<T> &) noexcept
-  {
-    return true;
-  }
-
-  template <class T>
-  inline constexpr bool operator>(const optional<T> &lhs, nullopt_t) noexcept
-  {
-    return lhs.has_value();
-  }
-
-  template <class T>
-  inline constexpr bool operator>(nullopt_t, const optional<T> &) noexcept
-  {
-    return false;
-  }
-
-  template <class T>
-  inline constexpr bool operator>=(const optional<T> &, nullopt_t) noexcept
-  {
-    return true;
-  }
-
-  template <class T>
-  inline constexpr bool operator>=(nullopt_t, const optional<T> &rhs) noexcept
-  {
-    return !rhs.has_value();
-  }
-
-  /// Compares the optional with a value.
-  template <class T, class U>
-  inline constexpr bool operator==(const optional<T> &lhs, const U &rhs)
-  {
-    return lhs.has_value() ? *lhs == rhs : false;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator==(const U &lhs, const optional<T> &rhs)
-  {
-    return rhs.has_value() ? lhs == *rhs : false;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator!=(const optional<T> &lhs, const U &rhs)
-  {
-    return lhs.has_value() ? *lhs != rhs : true;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator!=(const U &lhs, const optional<T> &rhs)
-  {
-    return rhs.has_value() ? lhs != *rhs : true;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator<(const optional<T> &lhs, const U &rhs)
-  {
-    return lhs.has_value() ? *lhs < rhs : true;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator<(const U &lhs, const optional<T> &rhs)
-  {
-    return rhs.has_value() ? lhs < *rhs : false;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator<=(const optional<T> &lhs, const U &rhs)
-  {
-    return lhs.has_value() ? *lhs <= rhs : true;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator<=(const U &lhs, const optional<T> &rhs)
-  {
-    return rhs.has_value() ? lhs <= *rhs : false;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator>(const optional<T> &lhs, const U &rhs)
-  {
-    return lhs.has_value() ? *lhs > rhs : false;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator>(const U &lhs, const optional<T> &rhs)
-  {
-    return rhs.has_value() ? lhs > *rhs : true;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator>=(const optional<T> &lhs, const U &rhs)
-  {
-    return lhs.has_value() ? *lhs >= rhs : false;
-  }
-
-  template <class T, class U>
-  inline constexpr bool operator>=(const U &lhs, const optional<T> &rhs)
-  {
-    return rhs.has_value() ? lhs >= *rhs : true;
-  }
-
-  template <
-    class T,
-    detail::enable_if_t<std::is_move_constructible<T>::value> * = nullptr,
-    detail::enable_if_t<detail::is_swappable<T>::value> * = nullptr>
-  void swap(optional<T> &lhs, optional<T> &rhs) noexcept(noexcept(lhs.swap(rhs)))
-  {
-    return lhs.swap(rhs);
-  }
-
-  namespace detail
-  {
-    struct i_am_secret
-    {};
-  } // namespace detail
-
-  template <
-    class T = detail::i_am_secret,
-    class U,
-    class Ret = detail::
-      conditional_t<std::is_same<T, detail::i_am_secret>::value, detail::decay_t<U>, T>>
-  inline constexpr optional<Ret> make_optional(U &&v)
-  {
-    return optional<Ret>(std::forward<U>(v));
-  }
-
-  template <class T, class... Args>
-  inline constexpr optional<T> make_optional(Args &&...args)
-  {
-    return optional<T>(in_place, std::forward<Args>(args)...);
-  }
-
-  template <class T, class U, class... Args>
-  inline constexpr optional<T> make_optional(std::initializer_list<U> il, Args &&...args)
-  {
-    return optional<T>(in_place, il, std::forward<Args>(args)...);
-  }
-
-#if __cplusplus >= 201703L
-  template <class T> optional(T) -> optional<T>;
-#endif
-
-  /// \exclude
-  namespace detail
-  {
-#ifdef TL_OPTIONAL_CXX14
-    template <
-      class Opt,
-      class F,
-      class Ret = decltype(detail::invoke(std::declval<F>(), *std::declval<Opt>())),
-      detail::enable_if_t<!std::is_void<Ret>::value> * = nullptr>
-    constexpr auto optional_map_impl(Opt &&opt, F &&f)
-    {
-      return opt.has_value() ? detail::invoke(std::forward<F>(f), *std::forward<Opt>(opt))
-                             : optional<Ret>(nullopt);
-    }
-
-    template <
-      class Opt,
-      class F,
-      class Ret = decltype(detail::invoke(std::declval<F>(), *std::declval<Opt>())),
-      detail::enable_if_t<std::is_void<Ret>::value> * = nullptr>
-    auto optional_map_impl(Opt &&opt, F &&f)
-    {
-      if (opt.has_value())
-        {
-          detail::invoke(std::forward<F>(f), *std::forward<Opt>(opt));
-          return make_optional(monostate{});
-        }
-
-      return optional<monostate>(nullopt);
-    }
-#else
-    template <
-      class Opt,
-      class F,
-      class Ret = decltype(detail::invoke(std::declval<F>(), *std::declval<Opt>())),
-      detail::enable_if_t<!std::is_void<Ret>::value> * = nullptr>
-
-    constexpr auto optional_map_impl(Opt &&opt, F &&f) -> optional<Ret>
-    {
-      return opt.has_value() ? detail::invoke(std::forward<F>(f), *std::forward<Opt>(opt))
-                             : optional<Ret>(nullopt);
-    }
-
-    template <
-      class Opt,
-      class F,
-      class Ret = decltype(detail::invoke(std::declval<F>(), *std::declval<Opt>())),
-      detail::enable_if_t<std::is_void<Ret>::value> * = nullptr>
-
-    auto optional_map_impl(Opt &&opt, F &&f) -> optional<monostate>
-    {
-      if (opt.has_value())
-        {
-          detail::invoke(std::forward<F>(f), *std::forward<Opt>(opt));
-          return monostate{};
-        }
-
-      return nullopt;
-    }
-#endif
-  } // namespace detail
-
-  /// Specialization for when `T` is a reference. `optional<T&>` acts similarly
-  /// to a `T*`, but provides more operations and shows intent more clearly.
-  template <class T> class optional<T &>
-  {
-  public:
-// The different versions for C++14 and 11 are needed because deduced return
-// types are not SFINAE-safe. This provides better support for things like
-// generic lambdas. C.f.
-// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0826r0.html
-#if defined(TL_OPTIONAL_CXX14) && !defined(TL_OPTIONAL_GCC49)                            \
-  && !defined(TL_OPTIONAL_GCC54) && !defined(TL_OPTIONAL_GCC55)
-
-    /// Carries out some operation which returns an optional on the stored
-    /// object if there is one.
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto and_then(F &&f) &
-    {
-      using result = detail::invoke_result_t<F, T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto and_then(F &&f) &&
-    {
-      using result = detail::invoke_result_t<F, T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-    template <class F> constexpr auto and_then(F &&f) const &
-    {
-      using result = detail::invoke_result_t<F, const T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F> constexpr auto and_then(F &&f) const &&
-    {
-      using result = detail::invoke_result_t<F, const T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-#endif
-#else
-    /// Carries out some operation which returns an optional on the stored
-    /// object if there is one.
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t<F, T &> and_then(F &&f) &
-    {
-      using result = detail::invoke_result_t<F, T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t<F, T &> and_then(F &&f) &&
-    {
-      using result = detail::invoke_result_t<F, T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-    template <class F>
-    constexpr detail::invoke_result_t<F, const T &> and_then(F &&f) const &
-    {
-      using result = detail::invoke_result_t<F, const T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), **this) : result(nullopt);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F>
-    constexpr detail::invoke_result_t<F, const T &> and_then(F &&f) const &&
-    {
-      using result = detail::invoke_result_t<F, const T &>;
-      static_assert(detail::is_optional<result>::value, "F must return an optional");
-
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : result(nullopt);
-    }
-#endif
-#endif
-
-#if defined(TL_OPTIONAL_CXX14) && !defined(TL_OPTIONAL_GCC49)                            \
-  && !defined(TL_OPTIONAL_GCC54) && !defined(TL_OPTIONAL_GCC55)
-    /// Carries out some operation on the stored object if there is one.
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto map(F &&f) &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto map(F &&f) &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto map(F &&f) const &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto map(F &&f) const &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#else
-    /// Carries out some operation on the stored object if there is one.
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(
-      std::declval<optional &>(), std::declval<F &&>()))
-      map(F &&f) &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(
-      std::declval<optional &&>(), std::declval<F &&>()))
-      map(F &&f) &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F>
-    constexpr decltype(detail::optional_map_impl(
-      std::declval<const optional &>(), std::declval<F &&>()))
-      map(F &&f) const &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F>
-    constexpr decltype(detail::optional_map_impl(
-      std::declval<const optional &&>(), std::declval<F &&>()))
-      map(F &&f) const &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#endif
-#endif
-
-#if defined(TL_OPTIONAL_CXX14) && !defined(TL_OPTIONAL_GCC49)                            \
-  && !defined(TL_OPTIONAL_GCC54) && !defined(TL_OPTIONAL_GCC55)
-    /// Carries out some operation on the stored object if there is one.
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto transform(F &&f) &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> TL_OPTIONAL_11_CONSTEXPR auto transform(F &&f) &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto transform(F &&f) const &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    template <class F> constexpr auto transform(F &&f) const &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#else
-    /// Carries out some operation on the stored object if there is one.
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(
-      std::declval<optional &>(), std::declval<F &&>()))
-      transform(F &&f) &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-    /// \group map
-    /// \synopsis template <class F> auto transform(F &&f) &&;
-    template <class F>
-    TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(
-      std::declval<optional &&>(), std::declval<F &&>()))
-      transform(F &&f) &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-
-    template <class F>
-    constexpr decltype(detail::optional_map_impl(
-      std::declval<const optional &>(), std::declval<F &&>()))
-      transform(F &&f) const &
-    {
-      return detail::optional_map_impl(*this, std::forward<F>(f));
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F>
-    constexpr decltype(detail::optional_map_impl(
-      std::declval<const optional &&>(), std::declval<F &&>()))
-      transform(F &&f) const &&
-    {
-      return detail::optional_map_impl(std::move(*this), std::forward<F>(f));
-    }
-#endif
-#endif
-
-    /// Calls `f` if the optional is empty
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) &
-    {
-      if (has_value())
-        return *this;
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) &
-    {
-      return has_value() ? *this : std::forward<F>(f)();
-    }
-
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) &&
-    {
-      if (has_value())
-        return std::move(*this);
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) &&
-    {
-      return has_value() ? std::move(*this) : std::forward<F>(f)();
-    }
-
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) const &
-    {
-      if (has_value())
-        return *this;
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> TL_OPTIONAL_11_CONSTEXPR or_else(F &&f) const &
-    {
-      return has_value() ? *this : std::forward<F>(f)();
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F, detail::enable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) const &&
-    {
-      if (has_value())
-        return std::move(*this);
-
-      std::forward<F>(f)();
-      return nullopt;
-    }
-
-    template <class F, detail::disable_if_ret_void<F> * = nullptr>
-    optional<T> or_else(F &&f) const &&
-    {
-      return has_value() ? std::move(*this) : std::forward<F>(f)();
-    }
-#endif
-
-    /// Maps the stored value with `f` if there is one, otherwise returns `u`
-    template <class F, class U> U map_or(F &&f, U &&u) &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u);
-    }
-
-    template <class F, class U> U map_or(F &&f, U &&u) &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u);
-    }
-
-    template <class F, class U> U map_or(F &&f, U &&u) const &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F, class U> U map_or(F &&f, U &&u) const &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u);
-    }
-#endif
-
-    /// Maps the stored value with `f` if there is one, otherwise calls
-    /// `u` and returns the result.
-    template <class F, class U> detail::invoke_result_t<U> map_or_else(F &&f, U &&u) &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u)();
-    }
-
-    template <class F, class U> detail::invoke_result_t<U> map_or_else(F &&f, U &&u) &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u)();
-    }
-
-    template <class F, class U>
-    detail::invoke_result_t<U> map_or_else(F &&f, U &&u) const &
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), **this)
-                         : std::forward<U>(u)();
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    template <class F, class U>
-    detail::invoke_result_t<U> map_or_else(F &&f, U &&u) const &&
-    {
-      return has_value() ? detail::invoke(std::forward<F>(f), std::move(**this))
-                         : std::forward<U>(u)();
-    }
-#endif
-
-    /// Returns `u` if `*this` has a value, otherwise an empty optional.
-    template <class U>
-    constexpr optional<typename std::decay<U>::type> conjunction(U &&u) const
-    {
-      using result = optional<detail::decay_t<U>>;
-      return has_value() ? result{u} : result{nullopt};
-    }
-
-    /// Returns `rhs` if `*this` is empty, otherwise the current value.
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(const optional &rhs) &
-    {
-      return has_value() ? *this : rhs;
-    }
-
-    constexpr optional disjunction(const optional &rhs) const &
-    {
-      return has_value() ? *this : rhs;
-    }
-
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(const optional &rhs) &&
-    {
-      return has_value() ? std::move(*this) : rhs;
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    constexpr optional disjunction(const optional &rhs) const &&
-    {
-      return has_value() ? std::move(*this) : rhs;
-    }
-#endif
-
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(optional &&rhs) &
-    {
-      return has_value() ? *this : std::move(rhs);
-    }
-
-    constexpr optional disjunction(optional &&rhs) const &
-    {
-      return has_value() ? *this : std::move(rhs);
-    }
-
-    TL_OPTIONAL_11_CONSTEXPR optional disjunction(optional &&rhs) &&
-    {
-      return has_value() ? std::move(*this) : std::move(rhs);
-    }
-
-#ifndef TL_OPTIONAL_NO_CONSTRR
-    constexpr optional disjunction(optional &&rhs) const &&
-    {
-      return has_value() ? std::move(*this) : std::move(rhs);
-    }
-#endif
-
-    /// Takes the value out of the optional, leaving it empty
-    optional take()
-    {
-      optional ret = std::move(*this);
-      reset();
-      return ret;
-    }
-
-    using value_type = T &;
-
-    /// Constructs an optional that does not contain a value.
-    constexpr optional() noexcept : m_value(nullptr) {}
-
-    constexpr optional(nullopt_t) noexcept : m_value(nullptr) {}
-
-    /// Copy constructor
-    ///
-    /// If `rhs` contains a value, the stored value is direct-initialized with
-    /// it. Otherwise, the constructed optional is empty.
-    TL_OPTIONAL_11_CONSTEXPR optional(const optional &rhs) noexcept = default;
-
-    /// Move constructor
-    ///
-    /// If `rhs` contains a value, the stored value is direct-initialized with
-    /// it. Otherwise, the constructed optional is empty.
-    TL_OPTIONAL_11_CONSTEXPR optional(optional &&rhs) = default;
-
-    /// Constructs the stored value with `u`.
-    template <
-      class U = T,
-      detail::enable_if_t<!detail::is_optional<detail::decay_t<U>>::value> * = nullptr>
-    constexpr optional(U &&u) noexcept : m_value(std::addressof(u))
-    {
-      static_assert(std::is_lvalue_reference<U>::value, "U must be an lvalue");
-    }
-
-    template <class U>
-    constexpr explicit optional(const optional<U> &rhs) noexcept : optional(*rhs)
-    {}
-
-    /// No-op
-    ~optional() = default;
-
-    /// Assignment to empty.
-    ///
-    /// Destroys the current value if there is one.
-    optional &operator=(nullopt_t) noexcept
-    {
-      m_value = nullptr;
-      return *this;
-    }
-
-    /// Copy assignment.
-    ///
-    /// Rebinds this optional to the referee of `rhs` if there is one. Otherwise
-    /// resets the stored value in `*this`.
-    optional &operator=(const optional &rhs) = default;
-
-    /// Rebinds this optional to `u`.
-    template <
-      class U = T,
-      detail::enable_if_t<!detail::is_optional<detail::decay_t<U>>::value> * = nullptr>
-    optional &operator=(U &&u)
-    {
-      static_assert(std::is_lvalue_reference<U>::value, "U must be an lvalue");
-      m_value = std::addressof(u);
-      return *this;
-    }
-
-    /// Converting copy assignment operator.
-    ///
-    /// Rebinds this optional to the referee of `rhs` if there is one. Otherwise
-    /// resets the stored value in `*this`.
-    template <class U> optional &operator=(const optional<U> &rhs) noexcept
-    {
-      m_value = std::addressof(rhs.value());
-      return *this;
-    }
-
-    /// Rebinds this optional to `u`.
-    template <
-      class U = T,
-      detail::enable_if_t<!detail::is_optional<detail::decay_t<U>>::value> * = nullptr>
-    optional &emplace(U &&u) noexcept
-    {
-      return *this = std::forward<U>(u);
-    }
-
-    void swap(optional &rhs) noexcept { std::swap(m_value, rhs.m_value); }
-
-    /// Returns a pointer to the stored value
-    constexpr const T *operator->() const noexcept { return m_value; }
-
-    TL_OPTIONAL_11_CONSTEXPR T *operator->() noexcept { return m_value; }
-
-    /// Returns the stored value
-    TL_OPTIONAL_11_CONSTEXPR T &operator*() noexcept { return *m_value; }
-
-    constexpr const T &operator*() const noexcept { return *m_value; }
-
-    constexpr bool has_value() const noexcept { return m_value != nullptr; }
-
-    constexpr explicit operator bool() const noexcept { return m_value != nullptr; }
-
-    /// Returns the contained value if there is one, otherwise throws
-    /// bad_optional_access
-    TL_OPTIONAL_11_CONSTEXPR T &value()
-    {
-      if (has_value())
-        return *m_value;
-      throw bad_optional_access();
-    }
-
-    TL_OPTIONAL_11_CONSTEXPR const T &value() const
-    {
-      if (has_value())
-        return *m_value;
-      throw bad_optional_access();
-    }
-
-    /// Returns the stored value if there is one, otherwise returns `u`
-    template <class U> constexpr T value_or(U &&u) const & noexcept
-    {
-      static_assert(
-        std::is_copy_constructible<T>::value && std::is_convertible<U &&, T>::value,
-        "T must be copy constructible and convertible from U");
-      return has_value() ? **this : static_cast<T>(std::forward<U>(u));
-    }
-
-    /// \group value_or
-    template <class U> TL_OPTIONAL_11_CONSTEXPR T value_or(U &&u) && noexcept
-    {
-      static_assert(
-        std::is_move_constructible<T>::value && std::is_convertible<U &&, T>::value,
-        "T must be move constructible and convertible from U");
-      return has_value() ? **this : static_cast<T>(std::forward<U>(u));
-    }
-
-    /// Destroys the stored value if one exists, making the optional empty
-    void reset() noexcept { m_value = nullptr; }
-
-  private:
-    T *m_value;
-  }; // namespace tl
-
-} // namespace tl
-
-namespace std
-{
-  // TODO SFINAE
-  template <class T> struct hash<tl::optional<T>>
-  {
-    ::std::size_t operator()(const tl::optional<T> &o) const
-    {
-      if (!o.has_value())
-        return 0;
-
-      return std::hash<tl::detail::remove_const_t<T>>()(*o);
-    }
-  };
-} // namespace std
-
-#endif
diff --git a/compiler/utils/result/result.hpp b/compiler/utils/result/result.hpp
deleted file mode 100644
index bd9a189..0000000
--- a/compiler/utils/result/result.hpp
+++ /dev/null
@@ -1,342 +0,0 @@
-// Copyright (c) 2023 Muqiu Han
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-//     * Redistributions of source code must retain the above copyright notice,
-//       this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above copyright
-//     notice,
-//       this list of conditions and the following disclaimer in the
-//       documentation and/or other materials provided with the distribution.
-//     * Neither the name of Swallow nor the names of its contributors
-//       may be used to endorse or promote products derived from this software
-//       without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef SWALLOW_COMPILER_UTILS_RESULT_RESULT_HPP
-#define SWALLOW_COMPILER_UTILS_RESULT_RESULT_HPP
-
-#include <iostream>
-#include <optional>
-#include <variant>
-
-namespace swallow::compiler::utils
-{
-  template <typename T> struct Ok;
-  template <typename E> struct Err;
-
-  struct Void
-  {};
-
-  // Result is a type that represents either success (Ok) or failure (Err).
-  template <typename T, typename E> struct Result
-  {
-
-    std::variant<Ok<T>, Err<E>> value;
-
-    Result() = default;
-
-    Result(const Ok<T> &val) : value(val) {}
-
-    Result(const Err<E> &val) : value(val) {}
-
-    friend auto operator<<(std::ostream &os, const Result &r) -> std::ostream &
-    {
-      if (r.is_ok())
-        os << r.unwrap();
-      else
-        os << r.unwrap_err();
-      return os;
-    }
-
-    auto operator=(Ok<T> val) -> Result
-    {
-      value = val;
-      return *this;
-    }
-
-    auto operator=(Err<E> val) -> Result
-    {
-      value = val;
-      return *this;
-    }
-
-    auto operator==(const Ok<T> &val) const -> bool
-    {
-      return is_ok() && unwrap() == val.value;
-    }
-
-    auto operator==(const Err<E> &val) const -> bool
-    {
-      return is_err() && unwrap_err() == val.value;
-    }
-
-    auto operator==(const Result<T, E> &rhs) const -> bool
-    {
-      return (
-        (is_ok() && rhs.is_ok() && unwrap() == rhs.unwrap())
-        || (is_err() && rhs.is_err() && unwrap_err() == rhs.unwrap_err()));
-    }
-
-    auto operator!=(const Result<T, E> &rhs) const -> bool { return !(*this == rhs); }
-
-    // Returns true if the result is Ok.
-    [[nodiscard]] auto is_ok() const -> bool
-    {
-      return std::holds_alternative<Ok<T>>(value);
-    }
-
-    // Returns true if the result is Err.
-    [[nodiscard]] auto is_err() const -> bool
-    {
-      return std::holds_alternative<Err<E>>(value);
-    }
-
-    // Converts from Result<T, E> to std::optional<T>.
-    [[nodiscard]] auto ok() const -> std::optional<T>
-    {
-      if (is_ok())
-        return std::get<0>(value).value;
-      return {};
-    }
-
-    // Converts from Result<T, E> to std::optional<E>.
-    [[nodiscard]] auto err() const -> std::optional<E>
-    {
-      if (is_err())
-        return std::get<1>(value).value;
-      return {};
-    }
-
-    // Returns res if the result is Ok, otherwise returns the Err value of self.
-    template <typename U> auto and_(const Result<U, E> &res) -> Result<U, E>
-    {
-      if (is_ok())
-        return res;
-      return Err(err().value());
-    }
-
-    // Synonymous with Result.and_(res)
-    template <typename U> auto operator&&(const Result<U, E> &res) -> Result<U, E>
-    {
-      if (is_ok())
-        return res;
-      return Err(err().value());
-    }
-
-    // Calls op if the result is Ok, otherwise returns the Err value of self.
-    // This function can be used for control flow based on Result values.
-    template <typename Function> auto and_then(Function op) -> Result
-    {
-      if (is_ok())
-        return op(unwrap());
-      return Err(err().value());
-    }
-
-    // Returns res if the result is Err,
-    // otherwise returns the Ok value of self.
-    auto or_(const Result &res) -> Result
-    {
-      if (is_err())
-        return res;
-      return Ok(ok().value());
-    }
-
-    // Synonymous with Result.or_(res)
-    auto operator||(const Result &res) -> Result
-    {
-      if (is_err())
-        return res;
-      return Ok(ok().value());
-    }
-
-    // Calls op if the result is Err,
-    // otherwise returns the Ok value of self.
-    template <typename Function> auto or_else(Function op) -> Result
-    {
-      if (is_err())
-        return op(unwrap_err());
-      return Ok(ok().value());
-    }
-
-    // Unwraps a result, yielding the content of an Ok. Else, it returns optb.
-    auto unwrap_or(T optb) -> T
-    {
-      if (is_ok())
-        return unwrap();
-      return optb;
-    }
-
-    // Unwraps a result, yielding the content of an Ok.
-    // If the value is an Err then it calls op with its value.
-    template <typename Function> auto unwrap_or_else(Function op) -> T
-    {
-      if (is_ok())
-        return unwrap();
-      return op(unwrap_err());
-    }
-
-    auto contains(const T &this_value) -> bool
-    {
-      return is_ok() ? unwrap() == this_value : false;
-    }
-
-    auto contains_err(const E &this_value) -> bool
-    {
-      return is_err() ? unwrap_err() == this_value : false;
-    }
-
-    // Maps a Result<T, E> to Result<U, E> by
-    // applying a function to a contained Ok value,
-    // leaving an Err value untouched.
-    //
-    // This function can be used to compose the results of two functions.
-    template <typename Function> auto map(Function fn) -> Result<decltype(fn(T())), E>
-    {
-      if (is_ok())
-        return Result<decltype(fn(T())), E>(Ok<decltype(fn(T()))>(fn(unwrap())));
-      return Result<decltype(fn(T())), E>(Err<E>(unwrap_err()));
-    }
-
-    // Applies a function to the contained value (if any),
-    // or returns the provided default (if not).
-    template <typename Value, typename Function>
-    auto map_or(Value default_value, Function fn) -> decltype(fn(T()))
-    {
-      if (is_ok())
-        return fn(unwrap());
-      return default_value;
-    }
-
-    // Maps a Result<T, E> to U by applying a function to a contained Ok value,
-    // or a fallback function to a contained Err value.
-    //
-    // This function can be used to unpack a successful result while handling an
-    // error.
-    template <typename ErrorFunction, typename OkFunction>
-    auto map_or_else(ErrorFunction err_fn, OkFunction ok_fn) -> decltype(ok_fn(T()))
-    {
-      if (is_ok())
-        return ok_fn(unwrap());
-      return err_fn(unwrap_err());
-    }
-
-    // Maps a Result<T, E> to Result<T, F> by
-    // applying a function to a contained Err value,
-    // leaving an Ok value untouched.
-    //
-    // This function can be used to pass
-    // through a successful result while handling an error.
-    template <typename Function> auto map_err(Function fn) -> Result<T, decltype(fn(E()))>
-    {
-      if (is_err())
-        return Result<T, decltype(fn(E()))>(Err<decltype(fn(E()))>(fn(unwrap_err())));
-      return Result<T, decltype(fn(E()))>(Ok<T>(unwrap()));
-    }
-
-    // Unwraps a result, yielding the content of an Ok.
-    // Throws if the value is an Err
-    [[nodiscard]] auto unwrap() const
-    {
-      if (is_ok())
-        return ok().value();
-      throw err().value();
-    }
-
-    // Unwraps a result, ignore the content of an Ok.
-    // Throws if the value is an Err
-    [[nodiscard]] auto ignore() const
-    {
-      if (is_ok())
-        {
-          ok().value();
-          return;
-        }
-
-      throw err().value();
-    }
-
-    // Unwraps a result, yielding the content of an Ok.
-    // Throws if the value is an Err with the `msg` argument
-    auto expect(const std::string &msg) -> T
-    {
-      if (is_ok())
-        return unwrap();
-      if constexpr (std::is_same_v<E, std::string>)
-        throw msg + ": " + unwrap_err();
-      else
-        throw msg + ": " + std::to_string(unwrap_err());
-    }
-
-    // Unwraps a result, yielding the content of an Err.
-    // Throws if the value is an Ok,
-    [[nodiscard]] auto unwrap_err() const
-    {
-      if (is_err())
-        return err().value();
-      throw ok().value();
-    }
-
-    // Unwraps a result, yielding the content of an Err.
-    // Throws if the value is an Ok with the `msg` argument
-    auto expect_err(const std::string &msg) -> E
-    {
-      if (is_err())
-        return unwrap_err();
-      if constexpr (std::is_same_v<T, std::string>)
-        throw msg + ": " + unwrap();
-      else
-        throw msg + ": " + std::to_string(unwrap());
-    }
-
-    // Returns the contained value or a default
-    // if Ok, returns the contained value,
-    // otherwise if Err, returns the default value for that type.
-    [[nodiscard]] auto unwrap_or_default() const -> T
-    {
-      if (is_ok())
-        return unwrap();
-      return T();
-    }
-  };
-
-  template <typename T> struct Ok
-  {
-    T value;
-
-    Ok(T value) : value(value) {}
-
-    template <typename Function> auto and_then(Function op) -> Result<T, T>
-    {
-      return Result<T, T>(*this).and_then(op);
-    }
-  };
-
-  template <typename E> struct Err
-  {
-    E value;
-
-    Err(E value) : value(value) {}
-
-    template <typename Function> auto and_then(Function op) -> Result<E, E>
-    {
-      return Result<E, E>(*this).and_then(op);
-    }
-  };
-} // namespace swallow::compiler::utils
-
-#endif // SWALLOW_COMPILER_UTILS_RESULT_RESULT_HPP
\ No newline at end of file
diff --git a/compiler/diagnostics/termcolor.hpp b/compiler/utils/termcolor.hpp
similarity index 73%
rename from compiler/diagnostics/termcolor.hpp
rename to compiler/utils/termcolor.hpp
index 4d4b41c..30c0f3b 100644
--- a/compiler/diagnostics/termcolor.hpp
+++ b/compiler/utils/termcolor.hpp
@@ -25,8 +25,7 @@
 
 // If implementation has not been explicitly set, try to choose one based on
 // target platform.
-#if !defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES) && !defined(TERMCOLOR_USE_WINDOWS_API) \
-  && !defined(TERMCOLOR_USE_NOOP)
+#if !defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES) && !defined(TERMCOLOR_USE_WINDOWS_API) && !defined(TERMCOLOR_USE_NOOP)
 #if defined(TERMCOLOR_TARGET_POSIX)
 #define TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES
 #define TERMCOLOR_AUTODETECTED_IMPLEMENTATION
@@ -52,37 +51,31 @@ namespace termcolor
   namespace _internal
   {
 
-    inline auto colorize_index() -> int;
-    inline auto get_standard_stream(const std::ostream &stream) -> FILE *;
-    inline auto get_standard_stream(const std::wostream &stream) -> FILE *;
-    template <typename CharT>
-    auto is_colorized(std::basic_ostream<CharT> &stream) -> bool;
-    template <typename CharT>
-    auto is_atty(const std::basic_ostream<CharT> &stream) -> bool;
+    inline auto                    colorize_index() -> int;
+    inline auto                    get_standard_stream(const std::ostream &stream) -> FILE *;
+    inline auto                    get_standard_stream(const std::wostream &stream) -> FILE *;
+    template <typename CharT> auto is_colorized(std::basic_ostream<CharT> &stream) -> bool;
+    template <typename CharT> auto is_atty(const std::basic_ostream<CharT> &stream) -> bool;
 
 #if defined(TERMCOLOR_TARGET_WINDOWS)
     template <typename CharT>
-    void win_change_attributes(
-      std::basic_ostream<CharT> &stream, int foreground, int background = -1);
+    void win_change_attributes(std::basic_ostream<CharT> &stream, int foreground, int background = -1);
 #endif
   } // namespace _internal
 
-  template <typename CharT>
-  auto colorize(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto colorize(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     stream.iword(_internal::colorize_index()) = 1L;
     return stream;
   }
 
-  template <typename CharT>
-  auto nocolorize(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto nocolorize(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     stream.iword(_internal::colorize_index()) = 0L;
     return stream;
   }
 
-  template <typename CharT>
-  auto reset(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto reset(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -95,8 +88,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto bold(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bold(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -108,8 +100,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto dark(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto dark(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -121,8 +112,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto italic(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto italic(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -134,8 +124,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto underline(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto underline(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -148,8 +137,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto blink(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto blink(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -161,8 +149,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto reverse(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto reverse(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -174,8 +161,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto concealed(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto concealed(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -187,8 +173,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto crossed(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto crossed(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -200,8 +185,7 @@ namespace termcolor
     return stream;
   }
 
-  template <uint8_t code, typename CharT>
-  auto color(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <uint8_t code, typename CharT> auto color(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -252,8 +236,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -269,8 +252,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -283,8 +265,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -297,8 +278,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -311,8 +291,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -325,8 +304,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -339,8 +317,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -353,23 +330,20 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[37m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED);
+        _internal::win_change_attributes(stream, FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -385,8 +359,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -399,8 +372,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -413,23 +385,20 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[93m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -442,38 +411,33 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[95m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, FOREGROUND_BLUE | FOREGROUND_RED | FOREGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, FOREGROUND_BLUE | FOREGROUND_RED | FOREGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[96m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto bright_white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto bright_white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -481,15 +445,13 @@ namespace termcolor
         stream << "\033[97m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
         _internal::win_change_attributes(
-          stream,
-          FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY);
+          stream, FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto on_grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -506,8 +468,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -520,8 +481,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -534,8 +494,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -548,8 +507,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -562,8 +520,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -576,8 +533,7 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -590,24 +546,21 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[47m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, -1, BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_RED);
+        _internal::win_change_attributes(stream, -1, BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_RED);
 #endif
       }
 
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_grey(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -624,98 +577,85 @@ namespace termcolor
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_red(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[101m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, -1, BACKGROUND_RED | BACKGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, -1, BACKGROUND_RED | BACKGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_green(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[102m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, -1, BACKGROUND_GREEN | BACKGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, -1, BACKGROUND_GREEN | BACKGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_yellow(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[103m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, -1, BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, -1, BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_blue(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[104m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, -1, BACKGROUND_BLUE | BACKGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, -1, BACKGROUND_BLUE | BACKGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_magenta(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[105m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, -1, BACKGROUND_BLUE | BACKGROUND_RED | BACKGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, -1, BACKGROUND_BLUE | BACKGROUND_RED | BACKGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_cyan(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
 #if defined(TERMCOLOR_USE_ANSI_ESCAPE_SEQUENCES)
         stream << "\033[106m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
-        _internal::win_change_attributes(
-          stream, -1, BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY);
+        _internal::win_change_attributes(stream, -1, BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY);
 #endif
       }
     return stream;
   }
 
-  template <typename CharT>
-  auto on_bright_white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
+  template <typename CharT> auto on_bright_white(std::basic_ostream<CharT> &stream) -> std::basic_ostream<CharT> &
   {
     if (_internal::is_colorized(stream))
       {
@@ -723,9 +663,7 @@ namespace termcolor
         stream << "\033[107m";
 #elif defined(TERMCOLOR_USE_WINDOWS_API)
         _internal::win_change_attributes(
-          stream,
-          -1,
-          BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_RED | BACKGROUND_INTENSITY);
+          stream, -1, BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_RED | BACKGROUND_INTENSITY);
 #endif
       }
 
@@ -785,8 +723,7 @@ namespace termcolor
 
     //! Test whether a given `std::ostream` object refers to
     //! a terminal.
-    template <typename CharT>
-    auto is_atty(const std::basic_ostream<CharT> &stream) -> bool
+    template <typename CharT> auto is_atty(const std::basic_ostream<CharT> &stream) -> bool
     {
       FILE *std_stream = get_standard_stream(stream);
 
@@ -833,8 +770,7 @@ namespace termcolor
     //! Change Windows Terminal colors attribute. If some
     //! parameter is `-1` then attribute won't changed.
     template <typename CharT>
-    void win_change_attributes(
-      std::basic_ostream<CharT> &stream, int foreground, int background)
+    void win_change_attributes(std::basic_ostream<CharT> &stream, int foreground, int background)
     {
       // yeah, i know.. it's ugly, it's windows.
       static WORD defaultAttributes = 0;
diff --git a/compiler/utils/variadic-table/variadic_table.hpp b/compiler/utils/variadic_table.hpp
similarity index 77%
rename from compiler/utils/variadic-table/variadic_table.hpp
rename to compiler/utils/variadic_table.hpp
index 3c7a2ae..c2ec6c4 100644
--- a/compiler/utils/variadic-table/variadic_table.hpp
+++ b/compiler/utils/variadic_table.hpp
@@ -1,16 +1,15 @@
-#ifndef SWALLOW_UTILS_VARIADIC_TABLE_HPP
-#define SWALLOW_UTILS_VARIADIC_TABLE_HPP
+#ifndef SWALLOW_COMPILER_UTILS_VARIADIC_TABLE_HPP
+#define SWALLOW_COMPILER_UTILS_VARIADIC_TABLE_HPP
 
-#include <iostream>
+#include <algorithm>
+#include <cassert>
+#include <cmath>
 #include <iomanip>
 #include <ios>
-#include <vector>
+#include <iostream>
 #include <tuple>
 #include <type_traits>
-#include <cassert>
-#include <cmath>
-#include <algorithm>
-#include <limits>
+#include <vector>
 
 namespace swallow::compiler::utils::variadicTable
 {
@@ -33,12 +32,12 @@ namespace swallow::compiler::utils::variadicTable
    * It's templated on the types that will be in each column
    * (all values in a column must have the same type)
    *
-   * For instance, to use it with data that looks like:  "Fred", 193.4, 35, "Sam"
-   * with header names: "Name", "Weight", "Age", "Brother"
+   * For instance, to use it with data that looks like:  "Fred", 193.4, 35,
+   * "Sam" with header names: "Name", "Weight", "Age", "Brother"
    *
    * You would invoke the table like so:
-   * VariadicTable<std::string, double, int, std::string> vt("Name", "Weight", "Age",
-   * "Brother");
+   * VariadicTable<std::string, double, int, std::string> vt("Name", "Weight",
+   * "Age", "Brother");
    *
    * Then add the data to the table:
    * vt.addRow("Fred", 193.4, 35, "Sam");
@@ -50,18 +49,16 @@ namespace swallow::compiler::utils::variadicTable
   {
   public:
     /// The type stored for each row
-    typedef std::tuple<Ts...> DataTuple;
+    using DataTuple = std::tuple<Ts...>;
 
     /**
      * Construct the table with headers
      *
      * @param headers The names of the columns
-     * @param static_column_size The size of columns that can't be found automatically
+     * @param static_column_size The size of columns that can't be found
+     * automatically
      */
-    VariadicTable(
-      std::vector<std::string> headers,
-      unsigned int             static_column_size = 0,
-      unsigned int             cell_padding = 1)
+    VariadicTable(std::vector<std::string> headers, unsigned int static_column_size = 0, unsigned int cell_padding = 1)
       : _headers(headers)
       , _num_columns(std::tuple_size<DataTuple>::value)
       , _static_column_size(static_column_size)
@@ -106,9 +103,8 @@ namespace swallow::compiler::utils::variadicTable
           auto half = _column_sizes[i] / 2;
           half -= _headers[i].size() / 2;
 
-          stream << std::string(_cell_padding, ' ') << std::setw(_column_sizes[i])
-                 << std::left << std::string(half, ' ') + _headers[i]
-                 << std::string(_cell_padding, ' ') << "|";
+          stream << std::string(_cell_padding, ' ') << std::setw(_column_sizes[i]) << std::left
+                 << std::string(half, ' ') + _headers[i] << std::string(_cell_padding, ' ') << "|";
         }
 
       stream << "\n";
@@ -133,8 +129,8 @@ namespace swallow::compiler::utils::variadicTable
      *
      * Note: this is ignored for std::string columns
      *
-     * @column_format The format for each column: MUST be the same length as the number of
-     * columns.
+     * @column_format The format for each column: MUST be the same length as the
+     * number of columns.
      */
     void setColumnFormat(const std::vector<VariadicTableColumnFormat> &column_format)
     {
@@ -148,8 +144,8 @@ namespace swallow::compiler::utils::variadicTable
      *
      * Note: this is ignored for std::string columns
      *
-     * @column_format The precision for each column: MUST be the same length as the number
-     * of columns.
+     * @column_format The precision for each column: MUST be the same length as
+     * the number of columns.
      */
     void setColumnPrecision(const std::vector<int> &precision)
     {
@@ -166,18 +162,14 @@ namespace swallow::compiler::utils::variadicTable
     // If it's a floating point value
     template <
       typename T,
-      typename = typename std::enable_if<
-        std::is_arithmetic<typename std::remove_reference<T>::type>::value>::type>
+      typename = typename std::enable_if<std::is_arithmetic<typename std::remove_reference<T>::type>::value>::type>
     static right_type justify(int /*firstchoice*/)
     {
       return std::right;
     }
 
     // Otherwise
-    template <typename T> static left_type justify(long /*secondchoice*/)
-    {
-      return std::left;
-    }
+    template <typename T> static left_type justify(long /*secondchoice*/) { return std::left; }
 
     /**
      * These three functions print out each item in a Tuple into the table
@@ -196,9 +188,7 @@ namespace swallow::compiler::utils::variadicTable
     void print_each(
       TupleType &&,
       StreamType & /*stream*/,
-      std::integral_constant<
-        size_t,
-        std::tuple_size<typename std::remove_reference<TupleType>::type>::value>)
+      std::integral_constant<size_t, std::tuple_size<typename std::remove_reference<TupleType>::type>::value>)
     {}
 
     /**
@@ -208,8 +198,8 @@ namespace swallow::compiler::utils::variadicTable
       std::size_t I,
       typename TupleType,
       typename StreamType,
-      typename = typename std::enable_if<
-        I != std::tuple_size<typename std::remove_reference<TupleType>::type>::value>::type>
+      typename =
+        typename std::enable_if<I != std::tuple_size<typename std::remove_reference<TupleType>::type>::value>::type>
     void print_each(TupleType &&t, StreamType &stream, std::integral_constant<size_t, I>)
     {
       auto &val = std::get<I>(t);
@@ -217,9 +207,7 @@ namespace swallow::compiler::utils::variadicTable
       // Set the precision
       if (!_precision.empty())
         {
-          assert(
-            _precision.size()
-            == std::tuple_size<typename std::remove_reference<TupleType>::type>::value);
+          assert(_precision.size() == std::tuple_size<typename std::remove_reference<TupleType>::type>::value);
 
           stream << std::setprecision(_precision[I]);
         }
@@ -227,9 +215,7 @@ namespace swallow::compiler::utils::variadicTable
       // Set the format
       if (!_column_format.empty())
         {
-          assert(
-            _column_format.size()
-            == std::tuple_size<typename std::remove_reference<TupleType>::type>::value);
+          assert(_column_format.size() == std::tuple_size<typename std::remove_reference<TupleType>::type>::value);
 
           if (_column_format[I] == VariadicTableColumnFormat::SCIENTIFIC)
             stream << std::scientific;
@@ -241,27 +227,25 @@ namespace swallow::compiler::utils::variadicTable
             stream << std::fixed << std::setprecision(2);
         }
 
-      stream << std::string(_cell_padding, ' ') << std::setw(_column_sizes[I])
-             << justify<decltype(val)>(0) << val << std::string(_cell_padding, ' ')
-             << "|";
+      stream << std::string(_cell_padding, ' ') << std::setw(_column_sizes[I]) << justify<decltype(val)>(0) << val
+             << std::string(_cell_padding, ' ') << "|";
 
       // Unset the format
       if (!_column_format.empty())
         {
-          // Because "stream << std::defaultfloat;" won't compile with old GCC or Clang
+          // Because "stream << std::defaultfloat;" won't compile with old GCC
+          // or Clang
           stream.unsetf(std::ios_base::floatfield);
         }
 
       // Recursive call to print the next item
-      print_each(
-        std::forward<TupleType>(t), stream, std::integral_constant<size_t, I + 1>());
+      print_each(std::forward<TupleType>(t), stream, std::integral_constant<size_t, I + 1>());
     }
 
     /**
      * his is what gets called first
      */
-    template <typename TupleType, typename StreamType>
-    void print_each(TupleType &&t, StreamType &stream)
+    template <typename TupleType, typename StreamType> void print_each(TupleType &&t, StreamType &stream)
     {
       print_each(std::forward<TupleType>(t), stream, std::integral_constant<size_t, 0>());
     }
@@ -271,9 +255,7 @@ namespace swallow::compiler::utils::variadicTable
      *
      * If the datatype has a size() member... let's call it
      */
-    template <class T>
-    size_t
-      sizeOfData(const T &data, decltype(((T *) nullptr)->size()) * /*dummy*/ = nullptr)
+    template <class T> size_t sizeOfData(const T &data, decltype(((T *) nullptr)->size()) * /*dummy*/ = nullptr)
     {
       return data.size();
     }
@@ -284,9 +266,7 @@ namespace swallow::compiler::utils::variadicTable
      * If the datatype is an integer - let's get it's length
      */
     template <class T>
-    size_t sizeOfData(
-      const T &data,
-      typename std::enable_if<std::is_integral<T>::value>::type * /*dummy*/ = nullptr)
+    size_t sizeOfData(const T &data, typename std::enable_if<std::is_integral<T>::value>::type * /*dummy*/ = nullptr)
     {
       if (data == 0)
         return 1;
@@ -300,8 +280,8 @@ namespace swallow::compiler::utils::variadicTable
     size_t sizeOfData(...) { return _static_column_size; }
 
     /**
-     * These three functions iterate over the Tuple, find the printed size of each element
-     * and set it in a vector
+     * These three functions iterate over the Tuple, find the printed size of
+     * each element and set it in a vector
      */
 
     /**
@@ -311,9 +291,7 @@ namespace swallow::compiler::utils::variadicTable
     void size_each(
       TupleType &&,
       std::vector<size_t> & /*sizes*/,
-      std::integral_constant<
-        size_t,
-        std::tuple_size<typename std::remove_reference<TupleType>::type>::value>)
+      std::integral_constant<size_t, std::tuple_size<typename std::remove_reference<TupleType>::type>::value>)
     {}
 
     /**
@@ -322,10 +300,9 @@ namespace swallow::compiler::utils::variadicTable
     template <
       std::size_t I,
       typename TupleType,
-      typename = typename std::enable_if<
-        I != std::tuple_size<typename std::remove_reference<TupleType>::type>::value>::type>
-    void size_each(
-      TupleType &&t, std::vector<size_t> &sizes, std::integral_constant<size_t, I>)
+      typename =
+        typename std::enable_if<I != std::tuple_size<typename std::remove_reference<TupleType>::type>::value>::type>
+    void size_each(TupleType &&t, std::vector<size_t> &sizes, std::integral_constant<size_t, I>)
     {
       sizes[I] = sizeOfData(std::get<I>(t));
 
@@ -335,15 +312,13 @@ namespace swallow::compiler::utils::variadicTable
           sizes[I] = 6; // 100.00
 
       // Continue the recursion
-      size_each(
-        std::forward<TupleType>(t), sizes, std::integral_constant<size_t, I + 1>());
+      size_each(std::forward<TupleType>(t), sizes, std::integral_constant<size_t, I + 1>());
     }
 
     /**
      * The function that is actually called that starts the recursion
      */
-    template <typename TupleType>
-    void size_each(TupleType &&t, std::vector<size_t> &sizes)
+    template <typename TupleType> void size_each(TupleType &&t, std::vector<size_t> &sizes)
     {
       size_each(std::forward<TupleType>(t), sizes, std::integral_constant<size_t, 0>());
     }
diff --git a/compiler/xmake.lua b/compiler/xmake.lua
index a2f25f2..ed66236 100644
--- a/compiler/xmake.lua
+++ b/compiler/xmake.lua
@@ -1,15 +1,24 @@
-set_project("swallow")
-set_version("0.0.1")
-set_xmakever("2.8.1")
-
-includes("../base")
+add_requires("tl_optional", "tl_expected", "spdlog")
+add_requires("llvm", { system = true })
 
 target("swc")
     set_kind("static")
     set_languages("c++20")
 
     add_files("*.cpp", "**/*.cpp")
-    add_includedirs(".", "ast", "type", "lexer", "parser", "diagnostics", "utils")
-    add_deps("base")
-    add_ldflags("clang::-stdlib=libc++")
-    add_cxxflags("clang::-stdlib=libc++")
\ No newline at end of file
+    add_includedirs(".")
+    add_packages("tl_optional", "tl_expected", "spdlog", "llvm")
+    add_ldflags("clang::-lc++abi")
+    add_cxxflags("clang::-stdlib=libc++")
+
+    before_build(function () 
+        local command = "flex -o $(projectdir)/compiler/lexer/flex_lexer.cpp $(projectdir)/compiler/lexer/lexer.l"
+        printf("[ RUN]: %s\n", command)
+        os.run(command)
+    end)
+
+    before_build(function ()
+        local command = "bison -o $(projectdir)/compiler/parser/bison_parser.cpp -d $(projectdir)/compiler/parser/parser.y"
+        printf("[ RUN]: %s\n", command)
+        os.run(command)
+    end)
\ No newline at end of file
diff --git a/make.ml b/make.ml
index c15a84f..bf8639a 100755
--- a/make.ml
+++ b/make.ml
@@ -5,10 +5,10 @@ let _ =
     | _ :: "fmt" :: _ -> "find . -iname '*.h' -o -iname '*.cpp' -o -iname '*.hpp' -o -iname '*.hh' | xargs clang-format -i"
     | _ :: "check" :: _ -> "xmake check clang.tidy --configfile=.clang-tidy"
     | _ :: "fix" :: _ -> "xmake check clang.tidy --configfile=.clang-tidy --fix"
-    | _ :: "build" :: _ -> "xmake f --toolchain=gcc -m debug && xmake build -w"
-    | _ :: "release" :: _ -> "xmake f --toolchain=gcc -m release && xmake build -w"
-    | _ :: "build.win" :: _ -> "xmake f --toolchain=mingw -m debug && xmake build -w"
-    | _ :: "release.win" :: _ -> "xmake f --toolchain=mingw -m release && xmake build -w"
+    | _ :: "build" :: _ -> "xmake f --toolchain=gcc -m debug -y && xmake build -j$(expr $(nproc) / 2)"
+    | _ :: "release" :: _ -> "xmake f --toolchain=gcc -m release -y && xmake build -j$(expr $(nproc) / 2)"
+    | _ :: "build.win" :: _ -> "xmake f --toolchain=mingw -m debug -y && xmake build -j$(expr $(nproc) / 2)"
+    | _ :: "release.win" :: _ -> "xmake f --toolchain=mingw -m release -y && xmake build -j$(expr $(nproc) / 2)"
     | _ -> ""
   end
   |> Sys.command
diff --git a/makefile b/makefile
index ecbf9ee..337c38b 100644
--- a/makefile
+++ b/makefile
@@ -6,82 +6,99 @@ ifneq ($(VERBOSE),1)
 VV=@
 endif
 
-CXX=/usr/bin/clang-18
-MXX=/usr/bin/clang-18
-AS=/usr/bin/clang-18
-CC=/usr/bin/clang-18
-MM=/usr/bin/clang-18
-
-AR=/usr/bin/ar
-LD=/usr/bin/clang++-18
-SH=/usr/bin/clang++-18
-
-swc_LD=/usr/bin/clang++-18
-swc_CXX=/usr/bin/clang-18
-swc_CXX=/usr/bin/clang-18
-base_SH=/usr/bin/clang++-18
-base_CXX=/usr/bin/clang-18
-base_CXX=/usr/bin/clang-18
-swi_LD=/usr/bin/clang++-18
-swi_CXX=/usr/bin/clang-18
-swi_CXX=/usr/bin/clang-18
-
-swc_CXXFLAGS=-Qunused-arguments -m64 -I/usr/lib/llvm-18/include/c++/v1 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils -stdlib=libc++ -DNDEBUG
-swc_CXXFLAGS=-Qunused-arguments -m64 -I/usr/lib/llvm-18/include/c++/v1 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -Icompiler/ast -Icompiler/type -Icompiler/lexer -Icompiler/parser -Icompiler/diagnostics -Icompiler/utils -stdlib=libc++ -DNDEBUG
-swc_LDFLAGS=-m64 --stdlib=libc++ -Lbuild/linux/x86_64/release -Wl,-rpath=$ORIGIN -s -lc++ -lbase
-base_CXXFLAGS=-Qunused-arguments -m64 -fPIC -I/usr/lib/llvm-18/include/c++/v1 -O3 -std=c++20 -DNDEBUG
-base_CXXFLAGS=-Qunused-arguments -m64 -fPIC -I/usr/lib/llvm-18/include/c++/v1 -O3 -std=c++20 -DNDEBUG
-base_SHFLAGS=-shared -m64 -fPIC -s
-swi_CXXFLAGS=-Qunused-arguments -m64 -I/usr/lib/llvm-18/include/c++/v1 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -DNDEBUG
-swi_CXXFLAGS=-Qunused-arguments -m64 -I/usr/lib/llvm-18/include/c++/v1 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -DNDEBUG
-swi_LDFLAGS=-m64 --stdlib=libc++ -Lbuild/linux/x86_64/release -Wl,-rpath=$ORIGIN -s -lbase
-
-default:  swc base swi
-
-all:  swc base swi
-
-.PHONY: default all  swc base swi
-
-swc: build/linux/x86_64/release/swc
-build/linux/x86_64/release/swc: build/linux/x86_64/release/libbase.so build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o build/.objs/swc/linux/x86_64/release/compiler/g-machine/instruction.cpp.o build/.objs/swc/linux/x86_64/release/compiler/g-machine/binop.cpp.o build/.objs/swc/linux/x86_64/release/compiler/g-machine/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/g-machine.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o
-	@echo linking.release swc
+CC=/usr/bin/x86_64-w64-mingw32-gcc
+CXX=/usr/bin/x86_64-w64-mingw32-g++
+AS=/usr/bin/x86_64-w64-mingw32-gcc
+MRC=/usr/bin/x86_64-w64-mingw32-windres
+
+AR=/usr/bin/x86_64-w64-mingw32-ar
+LD=/usr/bin/x86_64-w64-mingw32-g++
+SH=/usr/bin/x86_64-w64-mingw32-g++
+
+swi_AR=/usr/bin/x86_64-w64-mingw32-ar
+swi_CXX=/usr/bin/x86_64-w64-mingw32-g++
+swi_CXX=/usr/bin/x86_64-w64-mingw32-g++
+swa_LD=/usr/bin/x86_64-w64-mingw32-g++
+swa_CXX=/usr/bin/x86_64-w64-mingw32-g++
+swa_CXX=/usr/bin/x86_64-w64-mingw32-g++
+swc_AR=/usr/bin/x86_64-w64-mingw32-ar
+swc_CXX=/usr/bin/x86_64-w64-mingw32-g++
+swc_CXX=/usr/bin/x86_64-w64-mingw32-g++
+swallow_base_AR=/usr/bin/x86_64-w64-mingw32-ar
+swallow_base_CXX=/usr/bin/x86_64-w64-mingw32-g++
+swallow_base_CXX=/usr/bin/x86_64-w64-mingw32-g++
+
+swi_CXXFLAGS=-m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -DNDEBUG
+swi_CXXFLAGS=
+swi_ARFLAGS=-cr
+swa_CXXFLAGS=-m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -DNDEBUG
+swa_CXXFLAGS=
+swa_LDFLAGS=-m64 -Lbuild/linux/x86_64/release -s -lswi -lswc -lpthread
+swc_CXXFLAGS=-m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -Icompiler -isystem /home/muqiu/.xmake/packages/t/tl_optional/v1.1.0/c98c96f6367f4230ab618e8e653468c7/include -isystem /home/muqiu/.xmake/packages/t/tl_expected/v1.1.0/57774aec28a24eb8b84e9c45d2905d73/include -isystem /home/muqiu/.xmake/packages/s/spdlog/v1.14.1/6a0109080d85439d985a75b8a212f96a/include -DNDEBUG
+swc_CXXFLAGS=
+swc_ARFLAGS=-cr
+swallow_base_CXXFLAGS=-m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++20 -DNDEBUG
+swallow_base_CXXFLAGS=
+swallow_base_ARFLAGS=-cr
+
+default:  swi swa swc swallow_base
+
+all:  swi swa swc swallow_base
+
+.PHONY: default all  swi swa swc swallow_base
+
+swi: build/linux/x86_64/release/libswi.a
+build/linux/x86_64/release/libswi.a: build/linux/x86_64/release/libswc.a build/.objs/swi/linux/x86_64/release/repl/main.cpp.o
+	@echo linking.release libswi.a
 	@mkdir -p build/linux/x86_64/release
-	$(VV)$(swc_LD) -o build/linux/x86_64/release/swc build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o build/.objs/swc/linux/x86_64/release/compiler/g-machine/instruction.cpp.o build/.objs/swc/linux/x86_64/release/compiler/g-machine/binop.cpp.o build/.objs/swc/linux/x86_64/release/compiler/g-machine/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/g-machine.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o $(swc_LDFLAGS)
+	$(VV)$(swi_AR) $(swi_ARFLAGS) build/linux/x86_64/release/libswi.a build/.objs/swi/linux/x86_64/release/repl/main.cpp.o
+
+build/.objs/swi/linux/x86_64/release/repl/main.cpp.o: repl/main.cpp
+	@echo compiling.release repl/main.cpp
+	@mkdir -p build/.objs/swi/linux/x86_64/release/repl
+	$(VV)$(swi_CXX) -c $(swi_CXXFLAGS) -o build/.objs/swi/linux/x86_64/release/repl/main.cpp.o repl/main.cpp
+
+swa: build/linux/x86_64/release/swa
+build/linux/x86_64/release/swa: build/linux/x86_64/release/libswc.a build/linux/x86_64/release/libswi.a build/.objs/swa/linux/x86_64/release/cli/main.cpp.o
+	@echo linking.release swa
+	@mkdir -p build/linux/x86_64/release
+	$(VV)$(swa_LD) -o build/linux/x86_64/release/swa build/.objs/swa/linux/x86_64/release/cli/main.cpp.o $(swa_LDFLAGS)
+
+build/.objs/swa/linux/x86_64/release/cli/main.cpp.o: cli/main.cpp
+	@echo compiling.release cli/main.cpp
+	@mkdir -p build/.objs/swa/linux/x86_64/release/cli
+	$(VV)$(swa_CXX) -c $(swa_CXXFLAGS) -o build/.objs/swa/linux/x86_64/release/cli/main.cpp.o cli/main.cpp
+
+swc: build/linux/x86_64/release/libswc.a
+build/linux/x86_64/release/libswc.a: build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/gmachine.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/binop.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/instruction.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ir/context.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/node.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/runtime.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/stack.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o
+	@echo linking.release libswc.a
+	@mkdir -p build/linux/x86_64/release
+	$(VV)$(swc_AR) $(swc_ARFLAGS) build/linux/x86_64/release/libswc.a build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/gmachine.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/binop.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/gmachine/instruction.cpp.o build/.objs/swc/linux/x86_64/release/compiler/ir/context.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/node.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/runtime.cpp.o build/.objs/swc/linux/x86_64/release/compiler/runtime/stack.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o
 
 build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o: compiler/compiler.cpp
 	@echo compiling.release compiler/compiler.cpp
 	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler
 	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o compiler/compiler.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o: compiler/parser/parser.cpp
-	@echo compiling.release compiler/parser/parser.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/parser
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o compiler/parser/parser.cpp
-
-build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o: compiler/parser/bison_parser.cpp
-	@echo compiling.release compiler/parser/bison_parser.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/parser
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o compiler/parser/bison_parser.cpp
-
-build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o: compiler/type/dump.cpp
-	@echo compiling.release compiler/type/dump.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/type
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o compiler/type/dump.cpp
+build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o: compiler/ast/ast.cpp
+	@echo compiling.release compiler/ast/ast.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o compiler/ast/ast.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o: compiler/type/environment.cpp
-	@echo compiling.release compiler/type/environment.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/type
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o compiler/type/environment.cpp
+build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o: compiler/ast/dump.cpp
+	@echo compiling.release compiler/ast/dump.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o compiler/ast/dump.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o: compiler/type/type.cpp
-	@echo compiling.release compiler/type/type.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/type
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o compiler/type/type.cpp
+build/.objs/swc/linux/x86_64/release/compiler/ast/gmachine.cpp.o: compiler/ast/gmachine.cpp
+	@echo compiling.release compiler/ast/gmachine.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/gmachine.cpp.o compiler/ast/gmachine.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o: compiler/diagnostics/reporter.cpp
-	@echo compiling.release compiler/diagnostics/reporter.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/diagnostics
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o compiler/diagnostics/reporter.cpp
+build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o: compiler/ast/type.cpp
+	@echo compiling.release compiler/ast/type.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o compiler/ast/type.cpp
 
 build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o: compiler/diagnostics/diagnostics.cpp
 	@echo compiling.release compiler/diagnostics/diagnostics.cpp
@@ -93,20 +110,30 @@ build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o: compiler/
 	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/diagnostics
 	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o compiler/diagnostics/utils.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/g-machine/instruction.cpp.o: compiler/g-machine/instruction.cpp
-	@echo compiling.release compiler/g-machine/instruction.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/g-machine
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/g-machine/instruction.cpp.o compiler/g-machine/instruction.cpp
+build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o: compiler/diagnostics/reporter.cpp
+	@echo compiling.release compiler/diagnostics/reporter.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/diagnostics
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o compiler/diagnostics/reporter.cpp
+
+build/.objs/swc/linux/x86_64/release/compiler/gmachine/binop.cpp.o: compiler/gmachine/binop.cpp
+	@echo compiling.release compiler/gmachine/binop.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/gmachine
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/gmachine/binop.cpp.o compiler/gmachine/binop.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/g-machine/binop.cpp.o: compiler/g-machine/binop.cpp
-	@echo compiling.release compiler/g-machine/binop.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/g-machine
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/g-machine/binop.cpp.o compiler/g-machine/binop.cpp
+build/.objs/swc/linux/x86_64/release/compiler/gmachine/environment.cpp.o: compiler/gmachine/environment.cpp
+	@echo compiling.release compiler/gmachine/environment.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/gmachine
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/gmachine/environment.cpp.o compiler/gmachine/environment.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/g-machine/environment.cpp.o: compiler/g-machine/environment.cpp
-	@echo compiling.release compiler/g-machine/environment.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/g-machine
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/g-machine/environment.cpp.o compiler/g-machine/environment.cpp
+build/.objs/swc/linux/x86_64/release/compiler/gmachine/instruction.cpp.o: compiler/gmachine/instruction.cpp
+	@echo compiling.release compiler/gmachine/instruction.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/gmachine
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/gmachine/instruction.cpp.o compiler/gmachine/instruction.cpp
+
+build/.objs/swc/linux/x86_64/release/compiler/ir/context.cpp.o: compiler/ir/context.cpp
+	@echo compiling.release compiler/ir/context.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ir
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ir/context.cpp.o compiler/ir/context.cpp
 
 build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o: compiler/lexer/flex_lexer.cpp
 	@echo compiling.release compiler/lexer/flex_lexer.cpp
@@ -118,79 +145,97 @@ build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o: compiler/lexer/
 	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/lexer
 	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o compiler/lexer/lexer.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o: compiler/ast/ast.cpp
-	@echo compiling.release compiler/ast/ast.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o compiler/ast/ast.cpp
+build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o: compiler/parser/bison_parser.cpp
+	@echo compiling.release compiler/parser/bison_parser.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/parser
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o compiler/parser/bison_parser.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/ast/g-machine.cpp.o: compiler/ast/g-machine.cpp
-	@echo compiling.release compiler/ast/g-machine.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/g-machine.cpp.o compiler/ast/g-machine.cpp
+build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o: compiler/parser/parser.cpp
+	@echo compiling.release compiler/parser/parser.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/parser
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o compiler/parser/parser.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o: compiler/ast/dump.cpp
-	@echo compiling.release compiler/ast/dump.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o compiler/ast/dump.cpp
+build/.objs/swc/linux/x86_64/release/compiler/runtime/node.cpp.o: compiler/runtime/node.cpp
+	@echo compiling.release compiler/runtime/node.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/runtime
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/runtime/node.cpp.o compiler/runtime/node.cpp
 
-build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o: compiler/ast/type.cpp
-	@echo compiling.release compiler/ast/type.cpp
-	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/ast
-	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o compiler/ast/type.cpp
+build/.objs/swc/linux/x86_64/release/compiler/runtime/runtime.cpp.o: compiler/runtime/runtime.cpp
+	@echo compiling.release compiler/runtime/runtime.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/runtime
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/runtime/runtime.cpp.o compiler/runtime/runtime.cpp
+
+build/.objs/swc/linux/x86_64/release/compiler/runtime/stack.cpp.o: compiler/runtime/stack.cpp
+	@echo compiling.release compiler/runtime/stack.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/runtime
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/runtime/stack.cpp.o compiler/runtime/stack.cpp
+
+build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o: compiler/type/dump.cpp
+	@echo compiling.release compiler/type/dump.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/type
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o compiler/type/dump.cpp
+
+build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o: compiler/type/environment.cpp
+	@echo compiling.release compiler/type/environment.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/type
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o compiler/type/environment.cpp
+
+build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o: compiler/type/type.cpp
+	@echo compiling.release compiler/type/type.cpp
+	@mkdir -p build/.objs/swc/linux/x86_64/release/compiler/type
+	$(VV)$(swc_CXX) -c $(swc_CXXFLAGS) -o build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o compiler/type/type.cpp
 
-base: build/linux/x86_64/release/libbase.so
-build/linux/x86_64/release/libbase.so: build/.objs/base/linux/x86_64/release/base/base.cpp.o
-	@echo linking.release libbase.so
+swallow_base: build/linux/x86_64/release/libswallow_base.a
+build/linux/x86_64/release/libswallow_base.a: build/.objs/swallow_base/linux/x86_64/release/base/base.cpp.o
+	@echo linking.release libswallow_base.a
 	@mkdir -p build/linux/x86_64/release
-	$(VV)$(base_SH) -o build/linux/x86_64/release/libbase.so build/.objs/base/linux/x86_64/release/base/base.cpp.o $(base_SHFLAGS)
+	$(VV)$(swallow_base_AR) $(swallow_base_ARFLAGS) build/linux/x86_64/release/libswallow_base.a build/.objs/swallow_base/linux/x86_64/release/base/base.cpp.o
 
-build/.objs/base/linux/x86_64/release/base/base.cpp.o: base/base.cpp
+build/.objs/swallow_base/linux/x86_64/release/base/base.cpp.o: base/base.cpp
 	@echo compiling.release base/base.cpp
-	@mkdir -p build/.objs/base/linux/x86_64/release/base
-	$(VV)$(base_CXX) -c $(base_CXXFLAGS) -o build/.objs/base/linux/x86_64/release/base/base.cpp.o base/base.cpp
+	@mkdir -p build/.objs/swallow_base/linux/x86_64/release/base
+	$(VV)$(swallow_base_CXX) -c $(swallow_base_CXXFLAGS) -o build/.objs/swallow_base/linux/x86_64/release/base/base.cpp.o base/base.cpp
 
-swi: build/linux/x86_64/release/swi
-build/linux/x86_64/release/swi: build/linux/x86_64/release/swc build/.objs/swi/linux/x86_64/release/repl/main.cpp.o
-	@echo linking.release swi
-	@mkdir -p build/linux/x86_64/release
-	$(VV)$(swi_LD) -o build/linux/x86_64/release/swi build/.objs/swi/linux/x86_64/release/repl/main.cpp.o $(swi_LDFLAGS)
+clean:  clean_swi clean_swa clean_swc clean_swallow_base
 
-build/.objs/swi/linux/x86_64/release/repl/main.cpp.o: repl/main.cpp
-	@echo compiling.release repl/main.cpp
-	@mkdir -p build/.objs/swi/linux/x86_64/release/repl
-	$(VV)$(swi_CXX) -c $(swi_CXXFLAGS) -o build/.objs/swi/linux/x86_64/release/repl/main.cpp.o repl/main.cpp
+clean_swi:  clean_swc
+	@rm -rf build/linux/x86_64/release/libswi.a
+	@rm -rf build/linux/x86_64/release/swi.sym
+	@rm -rf build/.objs/swi/linux/x86_64/release/repl/main.cpp.o
 
-clean:  clean_swc clean_base clean_swi
+clean_swa:  clean_swc clean_swi
+	@rm -rf build/linux/x86_64/release/swa
+	@rm -rf build/linux/x86_64/release/swa.sym
+	@rm -rf build/.objs/swa/linux/x86_64/release/cli/main.cpp.o
 
-clean_swc:  clean_base
-	@rm -rf build/linux/x86_64/release/swc
+clean_swc: 
+	@rm -rf build/linux/x86_64/release/libswc.a
 	@rm -rf build/linux/x86_64/release/swc.sym
 	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/compiler.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/gmachine.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o
 	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/diagnostics/diagnostics.cpp.o
 	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/diagnostics/utils.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/g-machine/instruction.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/g-machine/binop.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/g-machine/environment.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/diagnostics/reporter.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/gmachine/binop.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/gmachine/environment.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/gmachine/instruction.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ir/context.cpp.o
 	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/lexer/flex_lexer.cpp.o
 	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/lexer/lexer.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/ast.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/g-machine.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/dump.cpp.o
-	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/ast/type.cpp.o
-
-clean_base: 
-	@rm -rf build/linux/x86_64/release/libbase.so
-	@rm -rf build/linux/x86_64/release/base.sym
-	@rm -rf build/.objs/base/linux/x86_64/release/base/base.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/parser/bison_parser.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/parser/parser.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/runtime/node.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/runtime/runtime.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/runtime/stack.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/type/dump.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/type/environment.cpp.o
+	@rm -rf build/.objs/swc/linux/x86_64/release/compiler/type/type.cpp.o
 
-clean_swi:  clean_swc
-	@rm -rf build/linux/x86_64/release/swi
-	@rm -rf build/linux/x86_64/release/swi.sym
-	@rm -rf build/.objs/swi/linux/x86_64/release/repl/main.cpp.o
+clean_swallow_base: 
+	@rm -rf build/linux/x86_64/release/libswallow_base.a
+	@rm -rf build/linux/x86_64/release/swallow_base.sym
+	@rm -rf build/.objs/swallow_base/linux/x86_64/release/base/base.cpp.o
 
diff --git a/xmake.lua b/xmake.lua
index 9c95a18..359d5ff 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -3,6 +3,159 @@ set_version("0.0.1")
 set_xmakever("2.8.1")
 
 add_rules("mode.debug", "mode.release")
-add_rules("plugin.compile_commands.autoupdate", {outputdir = "."})
 
-includes("**/xmake.lua")
\ No newline at end of file
+includes("**/xmake.lua")
+
+after_build(function()
+    -- imports
+    import("core.project.config")
+    import("core.project.depend")
+    import("core.project.project")
+    import("core.base.task")
+
+    -- we should not update it if we are installing xmake package
+    if os.getenv("XMAKE_IN_XREPO") then
+        return
+    end
+
+    function update_compile_commands()
+        -- run only once for all xmake process
+        local tmpfile = path.join(config.buildir(), ".gens", "rules", "plugin.compile_commands.autoupdate")
+        local dependfile = tmpfile .. ".d"
+        local lockfile = io.openlock(tmpfile .. ".lock")
+
+        if lockfile:trylock() then
+            local outputdir = "."
+            local lsp
+            local sourcefiles = {}
+            for _, target in pairs(project.targets()) do
+                table.join2(sourcefiles, target:sourcefiles(), (target:headerfiles()))
+                local extraconf = target:extraconf("rules", "plugin.compile_commands.autoupdate")
+                if extraconf then
+                    outputdir = extraconf.outputdir
+                    lsp = extraconf.lsp
+                end
+            end
+            table.sort(sourcefiles)
+            depend.on_changed(function()
+                -- we use task instead of os.exec("xmake") to avoid the project lock
+                local filename = "compile_commands.json"
+                local filepath = outputdir and path.join(outputdir, filename) or filename
+                task.run("project", { kind = "compile_commands", outputdir = outputdir, lsp = lsp })
+                print("[ RUN]: update compile_commands.json")
+            end, {
+                dependfile = dependfile,
+                files = table.join(project.allfiles(), config.filepath()),
+                values = sourcefiles
+            })
+            lockfile:close()
+        end
+    end
+
+    function update_makefile()
+        -- run only once for all xmake process
+        local tmpfile = path.join(config.buildir(), ".gens", "rules", "plugin.makefile.autoupdate")
+        local dependfile = tmpfile .. ".d"
+        local lockfile = io.openlock(tmpfile .. ".lock")
+
+        if lockfile:trylock() then
+            local outputdir = "."
+            local lsp
+            local sourcefiles = {}
+            for _, target in pairs(project.targets()) do
+                table.join2(sourcefiles, target:sourcefiles(), (target:headerfiles()))
+                local extraconf = target:extraconf("rules", "plugin.makefile.autoupdate")
+                if extraconf then
+                    outputdir = extraconf.outputdir
+                    lsp = extraconf.lsp
+                end
+            end
+            table.sort(sourcefiles)
+            depend.on_changed(function()
+                -- we use task instead of os.exec("xmake") to avoid the project lock
+                local filename = "makefile"
+                local filepath = outputdir and path.join(outputdir, filename) or filename
+                task.run("project", { kind = "makefile", outputdir = outputdir, lsp = lsp })
+                print("[ RUN]: update makefile")
+            end, {
+                dependfile = dependfile,
+                files = table.join(project.allfiles(), config.filepath()),
+                values = sourcefiles
+            })
+            lockfile:close()
+        end
+    end
+
+    function update_cmake()
+        -- run only once for all xmake process
+        local tmpfile = path.join(config.buildir(), ".gens", "rules", "plugin.cmake.autoupdate")
+        local dependfile = tmpfile .. ".d"
+        local lockfile = io.openlock(tmpfile .. ".lock")
+
+        if lockfile:trylock() then
+            local outputdir = "."
+            local lsp
+            local sourcefiles = {}
+            for _, target in pairs(project.targets()) do
+                table.join2(sourcefiles, target:sourcefiles(), (target:headerfiles()))
+                local extraconf = target:extraconf("rules", "plugin.cmake.autoupdate")
+                if extraconf then
+                    outputdir = extraconf.outputdir
+                    lsp = extraconf.lsp
+                end
+            end
+            table.sort(sourcefiles)
+            depend.on_changed(function()
+                -- we use task instead of os.exec("xmake") to avoid the project lock
+                local filename = "CMakeLists.txt"
+                local filepath = outputdir and path.join(outputdir, filename) or filename
+                task.run("project", { kind = "cmake", outputdir = outputdir, lsp = lsp })
+                print("[ RUN]: update CMakeLists.txt")
+            end, {
+                dependfile = dependfile,
+                files = table.join(project.allfiles(), config.filepath()),
+                values = sourcefiles
+            })
+            lockfile:close()
+        end
+    end
+
+    function update_ninja()
+        -- run only once for all xmake process
+        local tmpfile = path.join(config.buildir(), ".gens", "rules", "plugin.ninja.autoupdate")
+        local dependfile = tmpfile .. ".d"
+        local lockfile = io.openlock(tmpfile .. ".lock")
+
+        if lockfile:trylock() then
+            local outputdir = "."
+            local lsp
+            local sourcefiles = {}
+            for _, target in pairs(project.targets()) do
+                table.join2(sourcefiles, target:sourcefiles(), (target:headerfiles()))
+                local extraconf = target:extraconf("rules", "plugin.ninja.autoupdate")
+                if extraconf then
+                    outputdir = extraconf.outputdir
+                    lsp = extraconf.lsp
+                end
+            end
+            table.sort(sourcefiles)
+            depend.on_changed(function()
+                -- we use task instead of os.exec("xmake") to avoid the project lock
+                local filename = "build.ninja"
+                local filepath = outputdir and path.join(outputdir, filename) or filename
+                task.run("project", { kind = "ninja", outputdir = outputdir, lsp = lsp })
+                print("[ RUN]: update build.ninja")
+            end, {
+                dependfile = dependfile,
+                files = table.join(project.allfiles(), config.filepath()),
+                values = sourcefiles
+            })
+            lockfile:close()
+        end
+    end
+
+    update_cmake()
+    update_makefile()
+    update_compile_commands()
+    update_ninja()
+end)