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interpreter.cpp
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#include "interpreter.h"
#include "parser.h"
#include "statement.h"
#include "util.h"
#include <math.h>
void Program::run() {
VarScope global_var_scope;
VarScope local_var_scope;
FuncScope global_func_scope;
FuncScope local_func_scope;
this->eval(local_var_scope, global_var_scope, local_func_scope, global_func_scope);
}
ReturnValue Program::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
for (auto expression: this->expressions){
ReturnValue ret_obj;
ret_obj = expression->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (ret_obj.getType() == VAR_ASSIGNMENT_TYPE) {
ScopeValue* scope = ((ScopeValue*) ret_obj.getValueObj());
global_variable_scope.push((VarInScope*) scope->getValue());
}
else if (ret_obj.getType() == FUNC_ASSIGNMENT_TYPE) {
ScopeValue* scope = ((ScopeValue*) ret_obj.getValueObj());
global_function_scope.push((FuncInScope*) scope->getValue());
}
else if (ret_obj.getType() == RETURN_TYPE) {
return ReturnValue(NONE_TYPE); // End Program execution
}
else if (ret_obj.getType() != NONE_TYPE && ret_obj.getType() == PRIMITIVE_TYPE) {
std::cout << ((PrimitiveValue*) ret_obj.getValueObj())->getValue();
}
}
return ReturnValue(NONE_TYPE);
}
ReturnValue Number::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ValueObject* val = new PrimitiveValue(this->value, INT_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue String::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ValueObject* val = new PrimitiveValue(this->value, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue Multiplication::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
std::string ret;
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182793);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (leftType == INT_TYPE && rightType == INT_TYPE) {
ret = multIntInt(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, INT_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
if (leftType == INT_TYPE && rightType == STRING_TYPE) {
ret = multIntString(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
if (leftType == STRING_TYPE && rightType == INT_TYPE) {
ret = multStringInt(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
else {
eval_error("Multiplication does not support: " + leftValue->getValue() + "*" + rightValue->getValue(), 1);
}
// This can never happen because eval_error exits the programm
return ReturnValue();
}
std::string multIntInt(std::string lhs, std::string rhs) {
int a,b;
try {
a = std::stoi(lhs);
b = std::stoi(rhs);
}
catch (const std::exception e) {
eval_error("<int>*<int>", lhs + "*" + rhs, 2);
}
return std::to_string(a*b);
}
std::string multIntString(std::string integer, std::string str) {
int count;
std::string ret = "";
try {
count = std::stoi(integer);
}
catch (const std::exception e) {
eval_error("<int>*<string>", integer + "*" + str, 3);
}
for (int i = 0; i < count; i++) {
ret += str;
}
return ret;
}
std::string multStringInt(std::string str, std::string integer) {
int count;
std::string ret = "";
try {
count = std::stoi(integer);
}
catch (const std::exception e) {
eval_error("<string>*<int>", str + "*" + integer, 4);
}
for (int i = 0; i < count; i++) {
ret += str;
}
return ret;
}
ReturnValue Minus::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
std::string ret;
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182794);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (leftType == INT_TYPE && rightType == INT_TYPE) {
ret = minusIntInt(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, INT_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
else {
eval_error("Subtraction does not support: " + leftValue->getValue() + "*" + rightValue->getValue(), 5);
}
// This can never happen because eval_error exits the programm
return ReturnValue();
}
std::string minusIntInt(std::string lhs, std::string rhs) {
int a,b;
try {
a = std::stoi(lhs);
b = std::stoi(rhs);
}
catch (const std::exception e) {
eval_error("<int>-<int>", lhs + "-" + "rhs", 6);
}
return std::to_string(a-b);
}
ReturnValue Plus::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
std::string ret;
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182795);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (leftType == INT_TYPE && rightType == INT_TYPE) {
ret = plusIntInt(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, INT_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
if (leftType == INT_TYPE && rightType == STRING_TYPE) {
ret = plusIntString(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
if (leftType == STRING_TYPE && rightType == INT_TYPE) {
ret = plusStringInt(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
if (leftType == STRING_TYPE && rightType == STRING_TYPE) {
ret = plusStringString(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
if (leftType == BOOL_TYPE && rightType == STRING_TYPE) {
ret = plusBoolString(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
if (leftType == STRING_TYPE && rightType == BOOL_TYPE) {
ret = plusStringBool(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, STRING_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
else {
eval_error("Addition does not support: " + leftValue->getValue() + "+" + rightValue->getValue(), 7);
}
// This can never happen because eval_error exits the programm
return ReturnValue();
}
std::string plusIntInt(std::string lhs, std::string rhs) {
int a,b;
try {
a = std::stoi(lhs);
b = std::stoi(rhs);
}
catch (const std::exception e) {
eval_error("<int>+<int>", lhs + "+" + rhs, 8);
}
return std::to_string(a+b);
}
std::string plusIntString(std::string lhs, std::string rhs) {
return lhs + rhs;
}
std::string plusStringInt(std::string lhs, std::string rhs) {
return lhs + rhs;
}
std::string plusStringString(std::string lhs, std::string rhs) {
return lhs + rhs;
}
std::string plusBoolString(std::string lhs, std::string rhs) {
return lhs + rhs;
}
std::string plusStringBool(std::string lhs, std::string rhs) {
return lhs + rhs;
}
ReturnValue Divide::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
std::string ret;
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182796);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (leftType == INT_TYPE && rightType == INT_TYPE) {
ret = divideIntInt(leftValue->getValue(), rightValue->getValue());
ValueObject* val = new PrimitiveValue(ret, INT_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
else {
eval_error("Divison does not support: " + leftValue->getValue() + "/" + rightValue->getValue(), 9);
}
// This can never happen because eval_error exits the programm
return ReturnValue();
}
std::string divideIntInt(std::string lhs, std::string rhs) {
int a,b;
try {
a = std::stoi(lhs);
b = std::stoi(rhs);
}
catch (const std::exception e) {
eval_error("<int>/<int>", lhs + "/" + "rhs", 10);
}
return std::to_string(a/b);
}
ReturnValue Equality::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
std::string ret;
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182797);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
ret = boolToString(leftValue->getValue() == rightValue->getValue() && leftType==rightType);
ValueObject* val = new PrimitiveValue(ret, BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue Bool::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ValueObject* val = new PrimitiveValue(this->truth, BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue LParen::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
eval_error("Can not eval left parenthesis.", 11);
return ReturnValue();
}
ReturnValue RParen::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
eval_error("Can not eval left parenthesis.", 12);
return ReturnValue();
}
ReturnValue Less::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182798);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (!(leftValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + leftValue->getValue() + ")", 13);
}
if (!(rightValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + rightValue->getValue() + ")", 14);
}
int a,b;
try {
a = std::stoi(leftValue->getValue());
b = std::stoi(rightValue->getValue());
}
catch (const std::exception e) {
eval_error("Could not convert strings to ints in less evalutation: " + leftValue->getValue() + " < " + rightValue->getValue(), 15);
}
ValueObject* val = new PrimitiveValue(boolToString(a<b), BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue Greater::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182799);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (!(leftValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + leftValue->getValue() + ")", 16);
}
if (!(rightValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + rightValue->getValue() + ")", 17);
}
int a,b;
try {
a = std::stoi(leftValue->getValue());
b = std::stoi(rightValue->getValue());
}
catch (const std::exception e) {
eval_error("Could not convert strings to ints in greater evalutation: " + leftValue->getValue() + " > " + rightValue->getValue(), 18);
}
ValueObject* val = new PrimitiveValue(boolToString(a>b), BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue LessEqual::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182800);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (!(leftValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + leftValue->getValue() + ")", 19);
}
if (!(rightValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + rightValue->getValue() + ")", 20);
}
int a,b;
try {
a = std::stoi(leftValue->getValue());
b = std::stoi(rightValue->getValue());
}
catch (const std::exception e) {
eval_error("Could not convert strings to ints in less equal evalutation: " + leftValue->getValue() + " <= " + rightValue->getValue(), 21);
}
ValueObject* val = new PrimitiveValue(boolToString(a<=b), BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue GreaterEqual::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182801);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (!(leftValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + leftValue->getValue() + ")", 22);
}
if (!(rightValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + rightValue->getValue() + ")", 23);
}
int a,b;
try {
a = std::stoi(leftValue->getValue());
b = std::stoi(rightValue->getValue());
}
catch (const std::exception e) {
eval_error("Could not convert strings to ints in greater equal evalutation: " + leftValue->getValue() + " >= " + rightValue->getValue(), 24);
}
ValueObject* val = new PrimitiveValue(boolToString(a>=b), BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue Power::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182802);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (!(leftValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + leftValue->getValue() + ")", 25);
}
if (!(rightValue->getType() == INT_TYPE)) {
eval_error("<int type>", "<non int type> (Value:" + rightValue->getValue() + ")", 26);
}
int a,b;
try {
a = std::stoi(leftValue->getValue());
b = std::stoi(rightValue->getValue());
}
catch (const std::exception e) {
eval_error("Could not convert strings to ints in power evalutation: " + leftValue->getValue() + " ** " + rightValue->getValue(), 27);
}
ValueObject* val = new PrimitiveValue(std::to_string(ipow(a,b)), INT_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue Not::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182803);
}
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType rightType = rightValue->getType();
if (!(rightValue->getType() == BOOL_TYPE)) {
eval_error("<bool type>", "<non bool type> (Value:" + rightValue->getValue() + ")", 27);
}
bool a;
a = stringToBool(rightValue->getValue());
ValueObject* val = new PrimitiveValue(boolToString(!a), BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue And::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182804);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (!(leftValue->getType() == BOOL_TYPE)) {
eval_error("<bool type>", "<non bool type> (Value:" + leftValue->getValue() + ")", 28);
}
if (!(rightValue->getType() == BOOL_TYPE)) {
eval_error("<bool type>", "<non bool type> (Value:" + rightValue->getValue() + ")", 29);
}
bool a,b;
a = stringToBool(leftValue->getValue());
b = stringToBool(rightValue->getValue());
ValueObject* val = new PrimitiveValue(boolToString(a && b), BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue Or::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue lhs;
ReturnValue rhs;
rhs = this->RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
lhs = this->LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (lhs.getType() != PRIMITIVE_TYPE || rhs.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 182805);
}
PrimitiveValue* leftValue = (PrimitiveValue*) lhs.getValueObj();
PrimitiveValue* rightValue = (PrimitiveValue*) rhs.getValueObj();
ValueType leftType = leftValue->getType();
ValueType rightType = rightValue->getType();
if (!(leftValue->getType() == BOOL_TYPE)) {
eval_error("<bool type>", "<non bool type> (Value:" + leftValue->getValue() + ")", 30);
}
if (!(rightValue->getType() == BOOL_TYPE)) {
eval_error("<bool type>", "<non bool type> (Value:" + rightValue->getValue() + ")", 31);
}
bool a,b;
a = stringToBool(leftValue->getValue());
b = stringToBool(rightValue->getValue());
ValueObject* val = new PrimitiveValue(boolToString(a || b), BOOL_TYPE);
return ReturnValue(PRIMITIVE_TYPE, val);
}
ReturnValue Variable::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
std::string name = this->name;
if (local_variable_scope.isInScope(name)) {
return local_variable_scope.getValueByName(name);
}
else if (global_variable_scope.isInScope(name)) {
return global_variable_scope.getValueByName(name);
}
else {
eval_error("Can not find variable with name: " + name, 33);
}
// This can never happen because eval error quits execution
return ReturnValue();
}
ReturnValue FunctionCall::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
std::string functionName = this->functionName;
int param_count = this->params.params.size();
FuncInScope* func;
if (local_function_scope.isInScope(functionName, param_count)) {
func = local_function_scope.getFuncByNameAndParamCount(functionName, param_count);
}
else if (global_function_scope.isInScope(functionName, param_count)) {
func = global_function_scope.getFuncByNameAndParamCount(functionName, param_count);
}
else {
eval_error("Can not find function with name: " + functionName + ", and parameter count of " + std::to_string(param_count), 34);
}
std::vector<std::string> param_names = func->getParams();
VarScope new_local_variable_scope;
FuncScope new_local_function_scope;
int i = 0;
for (auto parameter: params.params) {
ReturnValue ret;
ret = parameter->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
std::string var_name = param_names.at(i);
if (ret.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9001);
}
std::string value = ((PrimitiveValue*) ret.getValueObj())->getValue();
ValueType type = ((PrimitiveValue*) ret.getValueObj())->getType();
VarInScope* var = new VarInScope(var_name, value, type);
new_local_variable_scope.push(var);
i++;
}
ReturnValue ret_func;
ret_func = func->getBody()->eval(new_local_variable_scope, global_variable_scope, new_local_function_scope, global_function_scope);
return ret_func;
}
ReturnValue VariableDeclaration::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
std::string name = this->var_name;
ReturnValue stat;
stat = this->assigned_stm->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (stat.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9002);
}
PrimitiveValue* val = (PrimitiveValue*) stat.getValueObj();
std::string value = val->getValue();
ValueType type = val->getType();
VarInScope* var = new VarInScope(name, value, type);
ValueObject* scp = new ScopeValue(var);
ReturnValue ret = ReturnValue(VAR_ASSIGNMENT_TYPE, scp);
return ret;
}
ReturnValue Dot::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
if(RHS->getType() != FUNC_TYPE) {
eval_error("<function>", "no function type", 9450);
}
ReturnValue lhs = LHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
FunctionCall* RHS = (FunctionCall*) this->RHS;
if (lhs.getType() == PRIMITIVE_TYPE) {
PrimitiveValue* pval = (PrimitiveValue*) lhs.getValueObj();
std::string mangle = "__" + enum_to_string(pval->getType()) + "__";
RHS->functionName = mangle + RHS->functionName;
Statement* stm = convertReturnToExpression(lhs);
RHS->params.addParamAtFront(stm);
ReturnValue ret = RHS->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
delete stm;
return ret;
}
else {
eval_error("This is a temporary message", 238794);
}
return ReturnValue();
}
ReturnValue If::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue cond;
cond = this->condition->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (cond.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9003);
}
PrimitiveValue* value = (PrimitiveValue*) cond.getValueObj();
if (stringToBool(value->getValue())) {
ReturnValue b;
b = this->body->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (b.getType() == BREAK_TYPE) {
return ReturnValue(BREAK_TYPE);
}
if (b.getType() == RETURN_TYPE) {
PrimitiveValue* b_value = (PrimitiveValue*) b.getValueObj();
ValueObject* val = new PrimitiveValue(b_value->getValue(), b_value->getType());
ReturnValue ret = ReturnValue(RETURN_TYPE, val);
return ret;
}
return ReturnValue(NONE_TYPE);
}
return ReturnValue(NONE_TYPE);
}
ReturnValue While::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue cond;
cond = this->condition->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (cond.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9005);
}
PrimitiveValue* value = (PrimitiveValue*) cond.getValueObj();
while (stringToBool(value->getValue())) {
ReturnValue b;
b = this->body->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (b.getType() == BREAK_TYPE) {
return ReturnValue(NONE_TYPE);
}
else if (b.getType() == RETURN_TYPE) {
PrimitiveValue* b_value = (PrimitiveValue*) b.getValueObj();
ValueObject* val = new PrimitiveValue(b_value->getValue(), b_value->getType());
ReturnValue ret = ReturnValue(RETURN_TYPE, val);
return ret;
}
cond = this->condition->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (cond.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9007);
}
value = (PrimitiveValue*) cond.getValueObj();
}
return ReturnValue(NONE_TYPE);
}
ReturnValue For::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue in;
ReturnValue cond;
ReturnValue incre;
in= this->init->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (in.getType() != VAR_ASSIGNMENT_TYPE) {
eval_error("Variable Assignment in For Expression", 9008);
}
local_variable_scope.push((VarInScope*)((ScopeValue*) in.getValueObj())->getValue());
cond = this->condition->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (cond.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9009);
}
PrimitiveValue* value = (PrimitiveValue*) cond.getValueObj();
while (stringToBool(value->getValue())) {
ReturnValue b;
b = this->body->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (b.getType() == BREAK_TYPE) {
return ReturnValue(NONE_TYPE);
}
else if (b.getType() == RETURN_TYPE) {
PrimitiveValue* b_value = (PrimitiveValue*) b.getValueObj();
ValueObject* val = new PrimitiveValue(b_value->getValue(), b_value->getType());
ReturnValue ret = ReturnValue(RETURN_TYPE, val);
return ret;
}
incre = this->changer->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (in.getType() != VAR_ASSIGNMENT_TYPE) {
eval_error("Non Variable Assignment in For Expression", 9010);
}
local_variable_scope.push((VarInScope*) ((ScopeValue*) incre.getValueObj())->getValue());
cond = this->condition->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (cond.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9011);
}
value = (PrimitiveValue*) cond.getValueObj();
}
return ReturnValue(NONE_TYPE);
}
ReturnValue Return::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
ReturnValue ret;
ret = this->return_value->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (ret.getType() != PRIMITIVE_TYPE) {
eval_error("<primitive type>", "<non primitive type>", 9012);
}
PrimitiveValue* val = (PrimitiveValue*) ret.getValueObj();
ValueObject* value = new PrimitiveValue(val->getValue(), val->getType());
ret = ReturnValue(RETURN_TYPE, value);
return ret;
}
ReturnValue Break::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
return ReturnValue(BREAK_TYPE);
}
ReturnValue FunctionDefinition::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
std::string functionName = this->name;
Block* body = this->body;
std::vector<std::string> params = this->param_names;
FuncInScope* func = new FuncInScope(functionName, params, body);
ValueObject* val = new ScopeValue(func);
ReturnValue ret = ReturnValue(FUNC_ASSIGNMENT_TYPE, val);
return ret;
}
ReturnValue Block::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
if (this->type == FUNC) {
return evalFuncBlock(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope, this);
}
return evalNonFuncBlock(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope, this);
}
ReturnValue evalFuncBlock(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope, Block* body) {
ReturnValue ret_obj;
for(auto expr: body->getExpressions()) {
ret_obj = expr->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (ret_obj.getType() == VAR_ASSIGNMENT_TYPE) {
local_variable_scope.push((VarInScope*) ((ScopeValue*)ret_obj.getValueObj())->getValue());
}
else if (ret_obj.getType() == FUNC_ASSIGNMENT_TYPE) {
local_function_scope.push((FuncInScope*) ((ScopeValue*)ret_obj.getValueObj())->getValue());
}
else if (ret_obj.getType() == RETURN_TYPE) {
// Change this later such that I know if the object is primitive or an object
return ReturnValue(PRIMITIVE_TYPE, ret_obj.getValueObj());
}
else if (ret_obj.getType() != NONE_TYPE && ret_obj.getType() == PRIMITIVE_TYPE) {
std::cout << ((PrimitiveValue*) ret_obj.getValueObj())->getValue();
}
}
return ReturnValue(NONE_TYPE);
}
ReturnValue evalNonFuncBlock(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope, Block* body) {
ReturnValue ret_obj;
for(auto expr: body->getExpressions()) {
ret_obj = expr->eval(local_variable_scope, global_variable_scope, local_function_scope, global_function_scope);
if (ret_obj.getType() == VAR_ASSIGNMENT_TYPE) {
global_variable_scope.push((VarInScope*) ((ScopeValue*)ret_obj.getValueObj())->getValue());
}
else if (ret_obj.getType() == FUNC_ASSIGNMENT_TYPE) {
global_function_scope.push((FuncInScope*) ((ScopeValue*)ret_obj.getValueObj())->getValue());
}
else if (ret_obj.getType() == BREAK_TYPE) {
return ReturnValue(BREAK_TYPE);
}
else if (ret_obj.getType() == RETURN_TYPE) {
return ReturnValue(RETURN_TYPE, ret_obj.getValueObj());
}
else if (ret_obj.getType() != NONE_TYPE && ret_obj.getType() == PRIMITIVE_TYPE) {
std::cout << ((PrimitiveValue*) ret_obj.getValueObj())->getValue();
}
}
return ReturnValue(NONE_TYPE);
}
ReturnValue Debug::eval(VarScope& local_variable_scope, VarScope& global_variable_scope, FuncScope& local_function_scope, FuncScope& global_function_scope) {
std::cout << "------------------" << "DEBUG-INFO" << "------------------\n";
std::cout << "Local Variables:\n";
for(auto var: local_variable_scope.getScope()) {
std::cout << var->getName() + " (" + enum_to_string(var->getType()) + "): " + var->getValue() + "\n";
}
std::cout << "Global Variables:\n";
for(auto var: global_variable_scope.getScope()) {
std::cout << var->getName() + " (" + enum_to_string(var->getType()) + "): " + var->getValue() + "\n";
}
std::cout << "------------------" << "DEBUG--END" << "------------------\n";
return ReturnValue(NONE_TYPE);
}
// Classes
ReturnValue::ReturnValue(ReturnType type, ValueObject* value) {
this->valueObj = value;
this->returnType = type;
}
ReturnValue::ReturnValue(ReturnType type) {
this->valueObj = NULL;
this->returnType = type;
}
ValueObject* ReturnValue::getValueObj() {
return this->valueObj;
}
ReturnType ReturnValue::getType() {
return this->returnType;
}
PrimitiveValue::PrimitiveValue(std::string value, ValueType type) {
this->value = value;
this->type = type;
}
ValueType PrimitiveValue::getType() {
return this->type;
}
std::string PrimitiveValue::getValue() {
return this->value;
}
VarInScope::VarInScope(std::string name, std::string value, ValueType type) {
this->name = name;
this->value = value;
this->type = type;
}
FuncInScope::FuncInScope(std::string name, std::vector<std::string> param_names, Block* body) {
this->name = name;
this->param_names = param_names;
this->body = body;
}
FuncScope::FuncScope(std::vector<FuncInScope*> scope) {
this->scope = scope;
}
VarScope::VarScope(std::vector<VarInScope*> scope) {
this->scope = scope;
}
std::string VarInScope::getName() {
return this->name;
}
std::string VarInScope::getValue() {
return this->value;
}
ValueType VarInScope::getType() {
return this->type;
}
bool VarScope::isInScope(std::string name) {
for (auto variable: this->scope) {
if (variable->getName() == name) {
return true;
}
}
return false;
}
ReturnValue VarScope::getValueByName(std::string name) {
for (auto variable: this->scope) {
if (variable->getName() == name) {