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#ifndef PCC_TYPE_H
#define PCC_TYPE_H
#include <memory>
#include <string>
#include <vector>
#include <llvm/IR/IRBuilder.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/Type.h>
namespace pcc {
using Value = llvm::Value*;
class Context;
enum class BinaryOperator {
ADD,
SUB,
MUL,
DIV,
MOD,
LT,
LE,
GT,
GE,
EQ,
NE,
AND,
OR,
XOR,
SHL,
SHR,
BINARYOP_NUMBER,
REAL_DIV // the difference between REAL_DIV and DIV is handled in
// TypeManager, thus we don't need to create instruction for this.
};
enum class UnaryOperator { POS, NEG, NOT, UNARYOP_NUMEBR };
const char* GetOperatorName(BinaryOperator op);
const char* GetOperatorName(UnaryOperator op);
template <typename T>
constexpr std::underlying_type_t<T> ToUnderlying(T value) {
return static_cast<std::underlying_type_t<T>>(value);
}
class Type {
public:
Type(std::string&& name, llvm::Type* LLVMType);
virtual const char* GetCommonName();
llvm::Type* GetLLVMType();
// return nullptr if the operation is not supported
virtual Value CreateBinaryOperation(BinaryOperator op, Value v0, Value v1,
Context* context);
virtual Value CreateUnaryOperation(UnaryOperator op, Value v,
Context* context);
virtual llvm::Constant* GetZeroInitializer();
protected:
Value NotAllowed(Value v0, Value v1, Context* context);
Value NotAllowed(Value v, Context* context);
Value CreateAdd(Value v0, Value v1, Context* context);
Value CreateSub(Value v0, Value v1, Context* context);
Value CreateMul(Value v0, Value v1, Context* context);
Value CreateDiv(Value v0, Value v1, Context* context);
Value CreateMod(Value v0, Value v1, Context* context);
Value CreateLt(Value v0, Value v1, Context* context);
Value CreateLe(Value v0, Value v1, Context* context);
Value CreateGt(Value v0, Value v1, Context* context);
Value CreateGe(Value v0, Value v1, Context* context);
Value CreateEq(Value v0, Value v1, Context* context);
Value CreateNe(Value v0, Value v1, Context* context);
Value CreateAnd(Value v0, Value v1, Context* context);
Value CreateOr(Value v0, Value v1, Context* context);
Value CreateXor(Value v0, Value v1, Context* context);
Value CreateShl(Value v0, Value v1, Context* context);
Value CreateShr(Value v0, Value v1, Context* context);
Value CreatePos(Value v, Context* context);
Value CreateNeg(Value v, Context* context);
Value CreateNot(Value v, Context* context);
Value CreateFAdd(Value v0, Value v1, Context* context);
Value CreateFSub(Value v0, Value v1, Context* context);
Value CreateFMul(Value v0, Value v1, Context* context);
Value CreateFDiv(Value v0, Value v1, Context* context);
Value CreateFMod(Value v0, Value v1, Context* context);
Value CreateFLt(Value v0, Value v1, Context* context);
Value CreateFLe(Value v0, Value v1, Context* context);
Value CreateFGt(Value v0, Value v1, Context* context);
Value CreateFGe(Value v0, Value v1, Context* context);
Value CreateFEq(Value v0, Value v1, Context* context);
Value CreateFNe(Value v0, Value v1, Context* context);
Value CreateFPos(Value v, Context* context);
Value CreateFNeg(Value v, Context* context);
std::string name_;
llvm::Type* LLVMType_;
};
class VoidType : public Type {
public:
VoidType();
};
class IntegerBaseType : public Type {
public:
IntegerBaseType(std::string&& name, int width, llvm::Type* LLVMType);
int GetWidth();
protected:
int width_;
};
class BooleanType : public IntegerBaseType {
public:
BooleanType();
virtual Value CreateBinaryOperation(BinaryOperator op, Value v0, Value v1,
Context* context) override;
virtual Value CreateUnaryOperation(UnaryOperator op, Value v,
Context* context) override;
};
class CharType : public IntegerBaseType {
public:
CharType();
virtual Value CreateBinaryOperation(BinaryOperator op, Value v0, Value v1,
Context* context) override;
virtual Value CreateUnaryOperation(UnaryOperator op, Value v,
Context* context) override;
};
class IntegerType : public IntegerBaseType {
public:
IntegerType();
virtual Value CreateBinaryOperation(BinaryOperator op, Value v0, Value v1,
Context* context) override;
virtual Value CreateUnaryOperation(UnaryOperator op, Value v,
Context* context) override;
};
class RealType : public Type {
public:
RealType();
virtual Value CreateBinaryOperation(BinaryOperator op, Value v0, Value v1,
Context* context) override;
virtual Value CreateUnaryOperation(UnaryOperator op, Value v,
Context* context) override;
};
class ArrayType : public Type {
public:
ArrayType(std::shared_ptr<Type> ElementType, uint64_t ElementNumber,
std::shared_ptr<Type> IndexType, Value start, Value end,
std::string&& name, bool IsZeroStarted = false);
std::shared_ptr<Type> GetElementType();
std::shared_ptr<Type> GetIndexType();
bool GetIsZeroStarted();
Value GetIndexStart();
protected:
std::shared_ptr<Type> ElementType_;
std::shared_ptr<Type> IndexType_;
bool IsZeroStarted_;
Value start_, end_;
};
class PointerType : public Type {
public:
PointerType(std::shared_ptr<Type> ElementType,
std::shared_ptr<Type> DifferenceType,
std::shared_ptr<Type> IndexType, std::string&& name);
std::shared_ptr<Type> GetElementType();
std::shared_ptr<Type> GetIndexType();
std::shared_ptr<Type> GeDiifferenceType();
virtual Value CreateBinaryOperation(BinaryOperator op, Value v0, Value v1,
Context* context) override;
protected:
Value CreatePointerSub(Value v0, Value v1, Context* context);
std::shared_ptr<Type> ElementType_;
std::shared_ptr<Type> DifferenceType_;
std::shared_ptr<Type> IndexType_;
};
class FunctionType : public Type {
public:
FunctionType(std::shared_ptr<Type> ReturnType,
std::vector<std::shared_ptr<Type>> ArgTypes,
std::string&& name, bool IsVariadic = false);
std::shared_ptr<Type> GetReturnType();
std::vector<std::shared_ptr<Type>> GetArgTypes();
bool IsVariadic();
protected:
std::shared_ptr<Type> ReturnType_;
std::vector<std::shared_ptr<Type>> ArgTypes_;
bool IsVariadic_;
};
using RecordMember = std::pair<std::string, std::shared_ptr<Type>>;
class RecordType : public Type {
public:
RecordType(const std::vector<RecordMember>& members, std::string&& name);
std::pair<int, std::shared_ptr<Type>> GetMember(const std::string& name);
protected:
std::map<std::string, std::pair<int, std::shared_ptr<Type>>> members_;
};
} // namespace pcc
#endif // PCC_TYPE_H
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