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ast_expr.cc
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ast_expr.cc
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/* File: ast_expr.cc
* -----------------
* Implementation of expression node classes.
*/
#include <string.h>
#include "ast_expr.h"
#include "ast_type.h"
#include "ast_decl.h"
IntConstant::IntConstant(yyltype loc, int val) : Expr(loc) {
value = val;
type = Type::intType;
}
void IntConstant::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
type = Type::intType;
}
Location *IntConstant::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
return code_gen->GenLoadConstant(value);
}
DoubleConstant::DoubleConstant(yyltype loc, double val) : Expr(loc) {
value = val;
type = Type::doubleType;
}
void DoubleConstant::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
type = Type::doubleType;
}
BoolConstant::BoolConstant(yyltype loc, bool val) : Expr(loc) {
value = val;
type = Type::boolType;
}
void BoolConstant::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
type = Type::boolType;
}
Location *BoolConstant::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
return code_gen->GenLoadConstant(value);
}
Location *StringConstant::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
return code_gen->GenLoadConstant(value);
}
StringConstant::StringConstant(yyltype loc, const char *val) : Expr(loc) {
Assert(val != NULL);
value = strdup(val);
type = Type::stringType;
}
void StringConstant::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
type = Type::stringType;
}
NullConstant::NullConstant(yyltype loc) : Expr(loc)
{
type = Type::nullType;
}
Operator::Operator(yyltype loc, const char *tok) : Node(loc) {
Assert(tok != NULL);
strncpy(tokenString, tok, sizeof(tokenString));
}
CompoundExpr::CompoundExpr(Expr *l, Operator *o, Expr *r)
: Expr(Join(l->GetLocation(), r->GetLocation())) {
Assert(l != NULL && o != NULL && r != NULL);
(op=o)->SetParent(this);
(left=l)->SetParent(this);
(right=r)->SetParent(this);
}
CompoundExpr::CompoundExpr(Operator *o, Expr *r)
: Expr(Join(o->GetLocation(), r->GetLocation())) {
Assert(o != NULL && r != NULL);
left = NULL;
(op=o)->SetParent(this);
(right=r)->SetParent(this);
}
int ArithmeticExpr::GetValue()
{
if (left != NULL)
{
if (strcmp(op->GetOperator(), "+") == 0)
return left->GetValue() + right->GetValue();
if (strcmp(op->GetOperator(), "-") == 0)
return left->GetValue() - right->GetValue();
if (strcmp(op->GetOperator(), "*") == 0)
return left->GetValue() * right->GetValue();
if (strcmp(op->GetOperator(), "/") == 0)
return left->GetValue() / right->GetValue();
}
else
{
if (strcmp(op->GetOperator(), "-") == 0)
return (right->GetValue()) * -1;
}
}
void ArithmeticExpr::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
if (left != NULL)
left->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
right->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
Type *left_type;
if (left != NULL)
left_type = left->GetType();
else
left_type = NULL;
Type *right_type = right->GetType();
bool to_continue = true;
if (left_type == NULL && left != NULL)
{
Identifier *left_id = left->GetNameId();
Assert(left_id != NULL);
Decl *left_decl = everything.Lookup(left_id->GetName());
if (left_decl == NULL)
{
to_continue = false;
if (printErrors)
{
type = Type::errorType;
ReportError::IdentifierNotDeclared(left_id, LookingForVariable);
}
}
else
{
VarDecl *var = dynamic_cast<VarDecl *>(left_decl);
Assert(var != NULL);
left_type = var->GetType();
}
}
if (right_type == NULL && right != NULL)
{
Identifier *right_id = right->GetNameId();
Assert(right_id != NULL);
Decl *right_decl = everything.Lookup(right_id->GetName());
if (right_decl == NULL)
{
to_continue = false;
if (printErrors)
{
type = Type::errorType;
ReportError::IdentifierNotDeclared(right_id, LookingForVariable);
}
}
else
{
VarDecl *var = dynamic_cast<VarDecl *>(right_decl);
Assert(var != NULL);
right_type = var->GetType();
}
}
if (to_continue)
{
if (left == NULL)
{
if (ArithAppropriate(right_type))
{
type = right_type;
}
else
{
ReportError::IncompatibleOperand(op, right_type);
type = Type::errorType;
}
return;
}
if (left_type->IsEquivalentTo(right_type))
{
if ((left_type == Type::errorType) || (right_type == Type::errorType))
{
type = Type::errorType;
}
else if ((ArithAppropriate(left_type) && ArithAppropriate(right_type)))
{
type = left_type;
}
else
{
type = Type::errorType;
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
else
{
type = Type::errorType;
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
this->everything = everything;
this->prev_scope = prev_scope;
this->curr_loop = curr_loop;
this->curr_fn_return_type = curr_fn_return_type;
this->curr_class = curr_class;
this->curr_class_full_scope = curr_class_full_scope;
}
Location *ArithmeticExpr::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
Location *right_loc = right->MakeLocation(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
Location *left_loc;
if (left != NULL)
{
left_loc = left->ReadValue(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
return code_gen->GenBinaryOp(op->GetOperator(), left_loc, right_loc);
}
else
{
if (strcmp(op->GetOperator(), "-") == 0)
{
Location *place_holder = code_gen->GenLoadConstant(0);
return code_gen->GenBinaryOp("-", place_holder, right_loc);
}
}
return NULL;
}
bool ArithmeticExpr::ArithAppropriate(Type *t)
{
if (t == Type::intType || t == Type::doubleType || t == Type::errorType)
return true;
return false;
}
bool RelationalExpr::RelationalAppropriate(Type *t)
{
if (t == Type::intType || t == Type::doubleType || t == Type::errorType)
return true;
return false;
}
void RelationalExpr::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
left->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
right->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
Type *left_type = left->GetType();
Type *right_type = right->GetType();
bool to_continue = true;
if (left_type == NULL)
{
Identifier *left_id = left->GetNameId();
Assert(left_id != NULL);
Decl *left_decl = everything.Lookup(left_id->GetName());
if (left_decl == NULL)
{
to_continue = false;
if (printErrors)
{
ReportError::IdentifierNotDeclared(left_id, LookingForVariable);
type = Type::errorType;
}
}
else
{
VarDecl *var = dynamic_cast<VarDecl *>(left_decl);
Assert(var != NULL);
left_type = var->GetType();
}
}
if (to_continue)
{
if (left_type->IsEquivalentTo(right_type))// && ExprAppropriate(left_type) && ExprAppropriate(right_type))
{
if ((left_type == Type::errorType) || (right_type == Type::errorType))
{
type = Type::errorType;
}
else if ((RelationalAppropriate(left_type) && RelationalAppropriate(right_type)))
{
type = Type::boolType;
}
else
{
type = Type::boolType;
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
else
{
type = Type::boolType;
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
this->everything = everything;
this->prev_scope = prev_scope;
this->curr_loop = curr_loop;
this->curr_fn_return_type = curr_fn_return_type;
this->curr_class = curr_class;
this->curr_class_full_scope = curr_class_full_scope;
}
Location *RelationalExpr::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
Location *left_loc = right->ReadValue(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
Location *right_loc = left->MakeLocation(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
const char *oper = op->GetOperator();
if (strcmp(oper, "<") == 0) //supported by TAC
{
return code_gen->GenBinaryOp(oper, right_loc, left_loc);
}
if (strcmp(oper, ">") == 0) //flip the right and left side
{
return code_gen->GenBinaryOp("<", left_loc, right_loc);
}
if (strcmp(oper, "<=") == 0)
{
Location *less_than = code_gen->GenBinaryOp("<", right_loc, left_loc);
Location *equals = code_gen->GenBinaryOp("==", left_loc, right_loc);
return code_gen->GenBinaryOp("||", less_than, equals);
}
if (strcmp(oper, ">=") == 0)
{
Location *greater_than = code_gen->GenBinaryOp("<", left_loc, right_loc);
Location *equals = code_gen->GenBinaryOp("==", left_loc, right_loc);
// code_gen->GenBuiltInCall(PrintBool, greater_than);
// code_gen->GenBuiltInCall(PrintBool, equals);
return code_gen->GenBinaryOp("||", greater_than, equals);
}
return NULL;
}
Location *AssignExpr::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
return Emit(code_gen, class_scopes, interface_scopes, global_scope, NULL, curr_fn);
}
Location *AssignExpr::Emit(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, const char *break_label, FnDecl *curr_fn)
{
Location *right_loc = right->ReadValue(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
FieldAccess *left_field = dynamic_cast<FieldAccess*>(left);
FieldAccess *right_field = dynamic_cast<FieldAccess*>(right);
/*
if (left_field != NULL && right_field != NULL && curr_class == NULL)
{
Decl *l = NULL;
Decl *r = NULL;
if (everything.Lookup(left_field->GetName()) != NULL)
{
l = everything.Lookup(left_field->GetName());
}
else if (global_scope->Lookup(left_field->GetName()) != NULL)
{
l = global_scope->Lookup(left_field->GetName());
}
else if (curr_class != NULL && curr_class_full_scope->Lookup(left_field->GetName()) != NULL)
{
l = curr_class_full_scope->Lookup(left_field->GetName());
}
if (everything.Lookup(right_field->GetName()) != NULL)
{
r = everything.Lookup(right_field->GetName());
}
else if (global_scope->Lookup(right_field->GetName()) != NULL)
{
r = global_scope->Lookup(right_field->GetName());
}
else if (curr_class != NULL && curr_class_full_scope->Lookup(right_field->GetName()) != NULL)
{
r = curr_class_full_scope->Lookup(right_field->GetName());
}
VarDecl *right_var = dynamic_cast<VarDecl*>(r);
VarDecl *left_var = dynamic_cast<VarDecl*>(l);
Type *rt = right_var->GetType();
Type *lt = left_var->GetType();
NamedType *r_nt = dynamic_cast<NamedType*>(rt);
NamedType *l_nt = dynamic_cast<NamedType*>(lt);
if (r_nt != NULL && l_nt != NULL)
{
Location *right_obj = code_gen->GenLoad(right_loc);
Location *left_ptr = left->MakeLocation(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
code_gen->GenStore(left_ptr, right_obj);
return right_obj;
}
else
{
left->StoreInLValue(code_gen, class_scopes, interface_scopes, global_scope, break_label, curr_fn, right_loc);
}
}
else*/
left->StoreInLValue(code_gen, class_scopes, interface_scopes, global_scope, break_label, curr_fn, right_loc);
Decl *matching_decl = NULL;
NewArrayExpr *right_new_array = dynamic_cast<NewArrayExpr *>(right);
ArrayAccess *left_array = dynamic_cast<ArrayAccess*>(left);
if (right_new_array != NULL && left == NULL)
{
//store the location of the array (ie right_loc) in its corresponding VarDecl
Decl *matching_decl = NULL;
const char *array_name = left->GetNameId()->GetName();
if (everything.Lookup(array_name) != NULL)
{
matching_decl = everything.Lookup(array_name);
}
else if (global_scope->Lookup(array_name) != NULL)
{
matching_decl = global_scope->Lookup(array_name);
}
else if (curr_class != NULL && curr_class_full_scope->Lookup(array_name) != NULL)
{
matching_decl = curr_class_full_scope->Lookup(array_name);
}
VarDecl *matching_var_decl = dynamic_cast<VarDecl *>(matching_decl);
Assert(matching_var_decl != NULL);
matching_var_decl->SetVarLocation(right_loc);
}
NewExpr *right_new_expr = dynamic_cast<NewExpr*>(right);
FieldAccess *left_field_access = dynamic_cast<FieldAccess*>(left);
if (right_new_expr != NULL && left_field_access != NULL)
{
Decl *matching_decl = NULL;
const char *lval_name = left->GetNameId()->GetName();
if (everything.Lookup(lval_name) != NULL)
{
matching_decl = everything.Lookup(lval_name);
}
else if (global_scope->Lookup(lval_name) != NULL)
{
matching_decl = global_scope->Lookup(lval_name);
}
else if (curr_class != NULL && curr_class_full_scope->Lookup(lval_name) != NULL)
{
matching_decl = curr_class_full_scope->Lookup(lval_name);
}
VarDecl *matching_var_decl = dynamic_cast<VarDecl*>(matching_decl);
matching_var_decl->SetVarLocation(right_loc);
}
return right_loc;
}
void AssignExpr::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
This *r = dynamic_cast<This*>(right);
left->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
if (r != NULL)
r->CheckThis(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
else
right->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
//NEED TO MAKE SURE THAT LEFT SIDE IS L-VALUE
Type *left_type = left->GetType();
Type *right_type = right->GetType();
//Null check - if left_type is a NamedType, then right_type can be nullType. Otherwise, eror
if (right_type == Type::nullType)
{
NamedType *left_type_named = dynamic_cast<NamedType *>(left_type);
if (left_type_named == NULL && left_type != Type::errorType)
{
ReportError::IncompatibleOperands(op, left_type, right_type);
}
type = left_type;
return;
}
bool to_continue = true;
if (left_type == NULL)
{
Identifier *left_id = left->GetNameId();
Assert(left_id != NULL);
Decl *left_decl = everything.Lookup(left_id->GetName());
if (left_decl == NULL)
{
to_continue = false;
if (printErrors)
{
type = Type::errorType;
ReportError::IdentifierNotDeclared(left_id, LookingForVariable);
}
}
else
{
VarDecl *var = dynamic_cast<VarDecl *>(left_decl);
Assert(var != NULL);
left_type = var->GetType();
}
}
if (to_continue)
{
if (left_type->IsEquivalentTo(right_type))
{
type = left_type;
}
else
{
bool errorAlreadyReported = false;
NamedType *right_nt = dynamic_cast<NamedType*>(right_type);
if (right_nt != NULL)
{
if (right_nt->IsCompatibleWith(left_type, prev_scope, errorAlreadyReported, class_scopes, interface_scopes, global_scope))
{
type = left_type;
}
else
{
type = Type::errorType;
if (!errorAlreadyReported)
{
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
}
else
{
if (right_type->IsCompatibleWith(left_type, prev_scope, errorAlreadyReported, class_scopes, interface_scopes, global_scope))
{
type = left_type;
}
else
{
type = Type::errorType;
if (!errorAlreadyReported)
{
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
}
}
}
this->everything = everything;
this->prev_scope = prev_scope;
this->curr_loop = curr_loop;
this->curr_fn_return_type = curr_fn_return_type;
this->curr_class = curr_class;
this->curr_class_full_scope = curr_class_full_scope;
}
Location *EqualityExpr::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
Location *left_loc = right->MakeLocation(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
// Location *right_loc = left->MakeLocation(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
Location *right_loc = left->ReadValue(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
const char *oper = op->GetOperator();
if (strcmp(oper, "==") == 0) //supported by TAC
{
if (left->GetType() == Type::stringType && right->GetType() == Type::stringType)
{
// code_gen->GenPushParam(left_loc);
// code_gen->GenPushParam(right_loc);
return code_gen->GenBuiltInCall(StringEqual, left_loc, right_loc);
}
return code_gen->GenBinaryOp(oper, right_loc, left_loc);
}
if (strcmp(oper, "!=") == 0)
{
Location *is_equal;
if (left->GetType() == Type::stringType && right->GetType() == Type::stringType)
{
is_equal = code_gen->GenBuiltInCall(StringEqual, left_loc, right_loc);
}
else
{
is_equal = code_gen->GenBinaryOp("==", right_loc, left_loc);
}
Location *minus_one = code_gen->GenLoadConstant(-1);
Location *one = code_gen->GenLoadConstant(1);
Location *not_equals = code_gen->GenBinaryOp("-", is_equal, one);
not_equals = code_gen->GenBinaryOp("*", not_equals, minus_one);
return not_equals;
}
return NULL;
}
void EqualityExpr::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
left->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
right->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
Type *left_type = left->GetType();
Type *right_type = right->GetType();
//Null check - if right_type is null, then left_type must be null or a NamedType. otherwise, eror.
if (right_type == Type::nullType && left_type != Type::nullType)
{
NamedType *left_type_named = dynamic_cast<NamedType *>(left_type);
if (left_type_named == NULL)
{
ReportError::IncompatibleOperands(op, left_type, right_type);
}
type = Type::boolType;
return;
}
bool to_continue = true;
if (left_type == NULL)
{
Identifier *left_id = left->GetNameId();
Assert(left_id != NULL);
Decl *left_decl = everything.Lookup(left_id->GetName());
if (left_decl == NULL)
{
to_continue = false;
if (printErrors)
{
type = Type::errorType;
ReportError::IdentifierNotDeclared(left_id, LookingForVariable);
}
}
else
{
VarDecl *var = dynamic_cast<VarDecl *>(left_decl);
Assert(var != NULL);
left_type = var->GetType();
}
}
if (left_type == Type::voidType || right_type == Type::voidType)
{
ReportError::IncompatibleOperands(op, left_type, right_type);
type = Type::boolType;
}
else if (left_type->IsEquivalentTo(right_type))
{
type = Type::boolType;
}
else
{
bool errorAlreadyReported = false;
if (right_type->IsCompatibleWith(left_type, prev_scope, errorAlreadyReported, class_scopes, interface_scopes, global_scope) || left_type->IsCompatibleWith(right_type, prev_scope, errorAlreadyReported, class_scopes, interface_scopes, global_scope))
{
type = Type::boolType;
}
else
{
type = Type::boolType;
if (!errorAlreadyReported)
{
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
}
this->everything = everything;
this->prev_scope = prev_scope;
this->curr_loop = curr_loop;
this->curr_fn_return_type = curr_fn_return_type;
this->curr_class = curr_class;
this->curr_class_full_scope = curr_class_full_scope;
}
Location *LogicalExpr::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
Location *left_loc = right->MakeLocation(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
Location *right_loc = NULL;
if (left != NULL)
right_loc = left->MakeLocation(code_gen, class_scopes, interface_scopes, global_scope, curr_fn);
const char *oper = op->GetOperator();
if (strcmp(oper, "!") != 0)
return code_gen->GenBinaryOp(oper, left_loc, right_loc);
Location *minus_one = code_gen->GenLoadConstant(-1);
Location *one = code_gen->GenLoadConstant(1);
Location *unary_not = code_gen->GenBinaryOp("-", left_loc, one);
unary_not = code_gen->GenBinaryOp("*", unary_not, minus_one);
return unary_not;
}
void LogicalExpr::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
if (left != NULL)
left->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
// if (right != NULL)
right->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
Type *left_type;
if (left != NULL)
left_type = left->GetType();
else
left_type = NULL;
Type *right_type = right->GetType();
/* if (right != NULL)
right_type = right->GetType(); */
bool to_continue = true;
if (left_type == NULL && left != NULL)
{
Identifier *left_id = left->GetNameId();
Assert(left_id != NULL);
Decl *left_decl = everything.Lookup(left_id->GetName());
if (left_decl == NULL)
{
to_continue = false;
if (printErrors)
{
type = Type::errorType;
ReportError::IdentifierNotDeclared(left_id, LookingForVariable);
}
}
else
{
VarDecl *var = dynamic_cast<VarDecl *>(left_decl);
Assert(var != NULL);
left_type = var->GetType();
}
}
if (to_continue)
{
if (left != NULL)
{
if (left_type == Type::boolType && right_type == Type::boolType)
{
type = Type::boolType;
}
else
{
type = Type::boolType;
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}
else //if (left == NULL)
{
if (right_type == Type::boolType)
{
type = Type::boolType;
}
else
{
type = Type::boolType;
ReportError::IncompatibleOperand(op, right_type);
}
}
}
this->everything = everything;
this->prev_scope = prev_scope;
this->curr_loop = curr_loop;
this->curr_fn_return_type = curr_fn_return_type;
this->curr_class = curr_class;
this->curr_class_full_scope = curr_class_full_scope;
}
/*
void CompoundExpr::CheckType(bool printErrors)
{
Type *left_type = left->GetType();
Type *right_type = right->GetType();
FieldAccess *left_field = dynamic_cast<FieldAccess *>(left);
if (left_type->IsEquivalentTo(right_type))
{
type = left_type;
}
else
{
ReportError::IncompatibleOperands(op, left_type, right_type);
}
}*/
void This::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
if (curr_class == NULL)
{
ReportError::ThisOutsideClassScope(this);
type = Type::errorType;
}
else
{
yyltype y;
Identifier *i = new Identifier(y, curr_class->GetId()->GetName());
NamedType *n = new NamedType(i);
type = n;
}
this->everything = everything;
this->prev_scope = prev_scope;
this->curr_loop = curr_loop;
this->curr_fn_return_type = curr_fn_return_type;
this->curr_class = curr_class;
this->curr_class_full_scope = curr_class_full_scope;
}
void This::CheckThis(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
if (curr_class == NULL)
{
ReportError::ThisOutsideClassScope(this);
type = Type::errorType;
}
else
{
yyltype y;
Identifier *i = new Identifier(y, curr_class->GetId()->GetName());
NamedType *n = new NamedType(i);
type = n;
}
this->everything = everything;
this->prev_scope = prev_scope;
this->curr_loop = curr_loop;
this->curr_fn_return_type = curr_fn_return_type;
this->curr_class = curr_class;
this->curr_class_full_scope = curr_class_full_scope;
}
Location *This::MakeLocation(CodeGenerator *code_gen, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, Hashtable<Decl*> *global_scope, FnDecl *curr_fn)
{
Location *implicit_this = new Location(fpRelative, 4, "this");
return implicit_this;
}
ArrayAccess::ArrayAccess(yyltype loc, Expr *b, Expr *s) : LValue(loc) {
(base=b)->SetParent(this);
(subscript=s)->SetParent(this);
}
Identifier *ArrayAccess::GetNameId()
{
return base->GetNameId();
}
void ArrayAccess::Check(Hashtable<Decl*> everything, Hashtable<Decl*> *prev_scope, Hashtable< Hashtable<Decl*>* > *class_scopes, Hashtable< Hashtable<Decl*>* > *interface_scopes, bool printErrors, Hashtable<Decl*> *global_scope, LoopStmt *curr_loop, Type *curr_fn_return_type, ClassDecl *curr_class, Hashtable<Decl*> *curr_class_full_scope)
{
if (!printErrors)
return;
base->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
subscript->Check(everything, prev_scope, class_scopes, interface_scopes, printErrors, global_scope, curr_loop, curr_fn_return_type, curr_class, curr_class_full_scope);
//makes sure that the subscript is an int
if (subscript->GetType() != Type::intType)
{
ReportError::SubscriptNotInteger(subscript);
type = Type::errorType;
}
Identifier *array_id = GetArrayNameField();
Decl *array;
if (everything.Lookup(array_id->GetName()) != NULL)
{
array = everything.Lookup(array_id->GetName());
}
else if (global_scope->Lookup(array_id->GetName()) != NULL)
{
array = global_scope->Lookup(array_id->GetName());
}
else
{