diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7142651..9076aaf 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -22,3 +22,8 @@ repos:
       - id: fmt
       - id: cargo-check
       - id: clippy
+  - repo: https://github.com/compilerla/conventional-pre-commit
+    rev: v3.2.0
+    hooks:
+      - id: conventional-pre-commit
+        stages: [commit-msg]
diff --git a/src/input.rs b/src/input.rs
index f3447d3..75fe844 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -2,20 +2,18 @@ use crate::parse::array::{ArrayBuilder, ArrayTokenizer};
 use crate::types::ArrayDefinition;
 
 pub(crate) struct Input {
-    pub(crate) visibility: syn::Visibility,
     pub(crate) definition: ArrayDefinition,
     pub(crate) tokenizer: ArrayTokenizer,
 }
 
 impl syn::parse::Parse for Input {
     fn parse(stream: syn::parse::ParseStream) -> syn::Result<Self> {
-        let visibility = stream.parse()?;
+        let _: syn::Visibility = stream.parse()?;
         let definition = stream.parse()?;
         stream.parse::<syn::Token![,]>()?;
         let tokenizer = stream.parse()?;
 
         Ok(Self {
-            visibility,
             definition,
             tokenizer,
         })
diff --git a/src/parse/converter.rs b/src/parse/converter.rs
index dff142d..7f250d9 100644
--- a/src/parse/converter.rs
+++ b/src/parse/converter.rs
@@ -1,7 +1,5 @@
-use syn::Lit;
-
 use super::interface::SynInterface;
-use super::traits::{ArrayLiteralConverter, LiteralConverter};
+use super::traits::LiteralConverter;
 
 impl LiteralConverter<u8> for SynInterface<u8> {
     fn value_from_lit(lit: syn::ExprLit) -> syn::Result<u8> {
diff --git a/src/parse/definition.rs b/src/parse/definition.rs
index ccf7aa9..e2f927a 100644
--- a/src/parse/definition.rs
+++ b/src/parse/definition.rs
@@ -1,4 +1,4 @@
-use crate::types::{Array, ArrayDefinition};
+use crate::types::ArrayDefinition;
 
 impl syn::parse::Parse for ArrayDefinition {
     fn parse(stream: syn::parse::ParseStream) -> syn::Result<Self> {
@@ -29,6 +29,6 @@ impl syn::parse::Parse for ArrayDefinition {
                 ))
             }
         };
-        Ok(Self::new(len, *typ)?)
+        Self::new(len, *typ)
     }
 }
diff --git a/src/parse/mod.rs b/src/parse/mod.rs
index d57a0d7..3a3acea 100644
--- a/src/parse/mod.rs
+++ b/src/parse/mod.rs
@@ -7,9 +7,7 @@ mod traits;
 mod types;
 
 pub mod interface {
-    pub use super::traits::{
-        ArrayLiteralConverter, IntoTokens, LiteralConverter, Tokenizer, TypeConverter,
-    };
+    pub use super::traits::{ArrayLiteralConverter, IntoTokens, Tokenizer, TypeConverter};
 
     pub struct SynInterface<T> {
         _marker: std::marker::PhantomData<T>,
diff --git a/src/parse/traits.rs b/src/parse/traits.rs
index 6d2d3a3..9a84bb9 100644
--- a/src/parse/traits.rs
+++ b/src/parse/traits.rs
@@ -81,16 +81,3 @@ pub trait Tokenizer<T> {
 pub trait IntoTokens {
     fn into_tokens(self) -> proc_macro2::TokenStream;
 }
-
-pub trait TryIntoTokens {
-    fn try_into_tokens(self) -> syn::Result<proc_macro2::TokenStream>;
-}
-
-impl<T> TryIntoTokens for T
-where
-    T: IntoTokens,
-{
-    fn try_into_tokens(self) -> syn::Result<proc_macro2::TokenStream> {
-        Ok(self.into_tokens())
-    }
-}
diff --git a/src/types/array.rs b/src/types/array.rs
index 02dbb2d..2dc8860 100644
--- a/src/types/array.rs
+++ b/src/types/array.rs
@@ -41,16 +41,12 @@ where
         Self { values }
     }
 
-    pub fn add(&mut self, value: T) {
-        self.values.push(value);
-    }
-
     pub fn check_size(&self, size: usize) -> bool {
         self.values.len() <= size
     }
 
     pub fn values(&self) -> Vec<T> {
-        self.values.iter().cloned().collect()
+        self.values.to_vec()
     }
 
     pub fn ensure_size(&mut self, size: usize) -> syn::Result<()> {
diff --git a/src/types/rust_type.rs b/src/types/rust_type.rs
index 93a02ae..a81ca72 100644
--- a/src/types/rust_type.rs
+++ b/src/types/rust_type.rs
@@ -28,15 +28,6 @@ impl RustType {
         self.segments.is_empty()
     }
 
-    // pub fn range(start: Option<&Self>, end: Option<&Self>) -> ::std::ops::Range<Self> {
-    //     match (start, end) {
-    //         (Some(start), Some(end)) => start.clone()..end.clone(),
-    //         (Some(start), None) => start.clone()..Self::from_string(""),
-    //         (None, Some(end)) => Self::from_string("")..end.clone(),
-    //         (None, None) => Self::from_string("")..Self::from_string(""),
-    //     }
-    // }
-
     pub fn is_supported(&self) -> bool {
         SUPPORTED_TYPES
             .iter()
@@ -47,10 +38,6 @@ impl RustType {
         self >= other && (self.is_supported() && other.is_supported())
     }
 
-    pub fn segments(&self) -> &[String] {
-        &self.segments
-    }
-
     pub fn exact_same_as(&self, other: &Self) -> bool {
         self.segments == other.segments
     }