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#ifndef PCC_EXPRNODE_H
#define PCC_EXPRNODE_H
#include <list>
#include "BaseNode.hh"
#include "Type.hh"
namespace pcc {
class ExprNode : public BaseNode {
public:
ExprNode(Context* context);
virtual Value CodeGen() = 0;
std::shared_ptr<Type> GetType();
protected:
std::shared_ptr<Type> type_;
};
class BinaryExprNode : public ExprNode {
public:
BinaryExprNode(Context* context, BinaryOperator op,
std::shared_ptr<ExprNode> left,
std::shared_ptr<ExprNode> right);
virtual Value CodeGen();
protected:
BinaryOperator op_;
std::shared_ptr<ExprNode> left_, right_;
};
class UnaryExprNode : public ExprNode {
public:
UnaryExprNode(Context* context, UnaryOperator op,
std::shared_ptr<ExprNode> value);
virtual Value CodeGen();
protected:
UnaryOperator op_;
std::shared_ptr<ExprNode> value_;
};
// when accessing lvalues, we need an extra load instruction to actually load
// the value from the pointer, this is like clang's 'LValueToRValue' node below.
// c++: int x=7; int y=x;
// `-CompoundStmt 0xd28720 <col:9, line:9:1>
// |-DeclStmt 0xd28638 <line:7:2, col:9>
// | `-VarDecl 0xd285b0 <col:2, col:8> col:6 used x 'int' cinit
// | `-IntegerLiteral 0xd28618 <col:8> 'int' 7
// `-DeclStmt 0xd28708 <line:8:2, col:9>
// `-VarDecl 0xd28668 <col:2, col:8> col:6 y 'int' cinit
// `-ImplicitCastExpr 0xd286f0 <col:8> 'int' <LValueToRValue>
// `-DeclRefExpr 0xd286d0 <col:8> 'int' lvalue Var 0xd285b0 'x' 'int'
class L2RCastingNode : public ExprNode {
public:
L2RCastingNode(Context* context, std::shared_ptr<ExprNode> lvalue);
virtual Value CodeGen() override;
protected:
std::shared_ptr<ExprNode> lvalue_;
};
// access an rvalue pointer, this generates one GEP instruction
class PointerAccessNode : public ExprNode {
public:
PointerAccessNode(Context* context, std::shared_ptr<ExprNode> lhs,
std::shared_ptr<ExprNode> rhs);
virtual Value CodeGen() override;
protected:
std::shared_ptr<ExprNode> lhs_;
std::shared_ptr<ExprNode> rhs_;
};
// access an array or lvalue pointer
class ArrayAccessNode : public ExprNode {
public:
ArrayAccessNode(Context* context, std::shared_ptr<ExprNode> lhs,
std::shared_ptr<ExprNode> rhs);
virtual Value CodeGen() override;
protected:
std::shared_ptr<ExprNode> lhs_;
std::shared_ptr<ExprNode> rhs_;
};
class IdentifierNode : public ExprNode {
public:
IdentifierNode(Context* context, const std::string& name);
virtual Value CodeGen() override;
protected:
std::string name_;
};
class FunctionCallNode : public ExprNode {
public:
FunctionCallNode(Context* context, const std::string& name,
std::list<std::shared_ptr<ExprNode>>&& args);
virtual Value CodeGen() override;
protected:
std::string name_;
std::list<std::shared_ptr<ExprNode>> args_;
};
} // namespace pcc
#endif // !PCC_EXPRNODE_H
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