#include "stdafx.h"

#include <jenga/include/smoothie/Smoothie.h>

#include <Compiler.h>

#include "../BasicCompiler_Common/common.h"
#include "Opcode.h"

int GetFunctionFromName(char *FuncName){
	if( lstrcmpi( FuncName, "Len" ) == 0 )				return FUNC_LEN;
	if( lstrcmpi( FuncName, "AddressOf" ) == 0 )		return FUNC_ADDRESSOF;
	if( lstrcmpi( FuncName, "SizeOf" ) == 0 )			return FUNC_SIZEOF;
	if( lstrcmpi( FuncName, "VarPtr" ) == 0 )			return FUNC_VARPTR;
	if( lstrcmpi( FuncName, "ObjPtr" ) == 0 )			return FUNC_OBJPTR;
	if( lstrcmpi( FuncName, "__unsafe_call" ) == 0 )	return FUNC_UNSAFE_CALL;
	if( lstrcmpi( FuncName, "GetDouble" ) == 0 )		return FUNC_GETDOUBLE;
	if( lstrcmpi( FuncName, "GetSingle" ) == 0 )		return FUNC_GETSINGLE;
	if( lstrcmpi( FuncName, "GetQWord" ) == 0 )			return FUNC_GETQWORD;
	if( lstrcmpi( FuncName, "GetDWord" ) == 0 )			return FUNC_GETDWORD;
	if( lstrcmpi( FuncName, "GetWord" ) == 0 )			return FUNC_GETWORD;
	if( lstrcmpi( FuncName, "GetByte" ) == 0 )			return FUNC_GETBYTE;
	return 0;
}
void Opcode_Func_Len( const char *Parameter ){
	BOOL bArrayHead;

	const char *tempParm=Parameter;
	char temporary[VN_SIZE];
	char temp2[32];
	Type type;
	if( !GetVarType(Parameter,type,0) ){
		sprintf(temporary,"_System_DummyStr2=%s",Parameter);
		OpcodeCalc(temporary);

		lstrcpy(temp2,"_System_DummyStr2");
		tempParm=temp2;

		type.SetType( DEF_OBJECT, compiler.GetObjectModule().meta.GetClasses().GetStringClassPtr() );
	}

	if( type.IsStringClass() ){
		//Stringオブジェクトの場合
		sprintf(temporary,"%s.Length",tempParm);

		int reg=REG_RAX;
		NumOpe(&reg,temporary,Type(),Type());
		return;
	}

	Subscripts subscripts;
	RELATIVE_VAR RelativeVar;
	if(!GetVarOffsetReadOnly(tempParm,&RelativeVar,type,&subscripts)) return;

	if(type.GetBasicType()&FLAG_PTR){
		type.SetBasicType( type.GetBasicType() & ( ~FLAG_PTR ) );

		bArrayHead=1;
	}
	else bArrayHead=0;

	int typeSize = type.GetSize();

	if(bArrayHead) typeSize*=JumpSubScripts(subscripts);

	//mov rax,TypeSize
	compiler.codeGenerator.op_mov_RV(sizeof(_int64),REG_RAX,typeSize);

	return;
}
void Opcode_Func_AddressOf( const char *name ){
	extern int cp;
	const UserProc *pUserProc;

	extern LONG_PTR ProcPtr_BaseIndex;
	if(ProcPtr_BaseIndex!=-1){
		//左辺の型にのっとり、オーバーロードを解決

		std::vector<const UserProc *> subs;
		GetOverloadSubHash( name, subs );
		if( subs.size() == 0 ){
			SetError(27,name,cp);
			return;
		}

		//オーバーロードを解決
		pUserProc=OverloadSolution(name,subs,compiler.GetObjectModule().meta.GetProcPointers()[ProcPtr_BaseIndex]->Params(), Type() );

		if(!pUserProc){
			SetError(27,name,cp);
			return;
		}
	}
	else{
		pUserProc=GetSubHash(name);
		if(!pUserProc){
			SetError(27,name,cp);
			return;
		}
	}

	if( pUserProc->IsVirtual() ){
		///////////////////////////////
		// 仮想関数の場合
		// thisポインタをrcxにコピー
		///////////////////////////////

		const CClass *pobj_c;

		char ObjectName[VN_SIZE];
		ReferenceKind referenceKind;
		SplitObjectName(name,ObjectName, referenceKind );

		if(ObjectName[0]){
			if(lstrcmpi(ObjectName,"Super")==0) goto InClassMember;
			else{
				RELATIVE_VAR RelativeVar;
				Type type;
				if(!GetVarOffsetReadOnly(ObjectName,&RelativeVar,type)) return;
				SetVarPtrToReg(REG_RCX,&RelativeVar);

				//参照タイプが整合しているかをチェック
				if( !( type.IsObject() && referenceKind == RefDot
					|| type.IsObjectPtr() && referenceKind == RefPointer ) )
				{
					SetError(104,ObjectName,cp);
				}

				if(type.IsObjectPtr()){
					//mov rcx,qword ptr[rcx]
					compiler.codeGenerator.op_mov_RM(sizeof(_int64),REG_RCX,REG_RCX,0,MOD_BASE);
				}
			}
		}
		else{
InClassMember:
			//自身のオブジェクトのThisポインタをrcxにコピー
			SetThisPtrToReg(REG_RCX);

			pobj_c=compiler.pCompilingClass;
		}


		//仮想関数（オブジェクトメソッド）
		//pObj->func_table->func1
		//                ->func2
		//                ->func3

		//mov r11,qword ptr[rcx]
		compiler.codeGenerator.op_mov_RM(sizeof(_int64),REG_R11,REG_RCX,0,MOD_BASE);

		int i2 = pobj_c->GetFuncNumInVtbl( pUserProc );

		//mov rax,qword ptr[r11+func_index]
		if(i2*PTR_SIZE<=0x7F){
			compiler.codeGenerator.op_mov_RM(sizeof(_int64),REG_RAX,REG_R11,i2*PTR_SIZE,MOD_BASE_DISP8);
		}
		else{
			compiler.codeGenerator.op_mov_RM(sizeof(_int64),REG_RAX,REG_R11,i2*PTR_SIZE,MOD_BASE_DISP32);
		}
	}
	else{
		//一般の関数

		//mov rax,ProcAddr
		compiler.codeGenerator.op_addressof( REG_RAX, pUserProc );
	}

	pUserProc->Using();
}
void Opcode_Func_SizeOf( const string &typeName ){
	Type tempType;
	if( !compiler.StringToType( typeName, tempType ) ){
		SetError(3,typeName,cp);
		return;
	}

	int typeSize = ( tempType.IsObject() ) ?
		tempType.GetClass().GetSize() : tempType.GetSize();

	//mov rax,size
	compiler.codeGenerator.op_mov_RV(sizeof(_int64),REG_RAX,typeSize);
}
void Opcode_Func_VarPtr( const char *Parameter, Type &resultType, bool isCallOn ){
	if( isCallOn == false ){
		// 戻り値の型を取得するだけ

		//変数のアドレスを取得
		if(!GetVarType( Parameter, resultType, true )) return;

		resultType.PtrLevelUp();

		return;
	}

	RELATIVE_VAR RelativeVar;

	//変数のアドレスを取得
	if(!GetVarOffsetReadOnly( Parameter, &RelativeVar, resultType )) return;

	int beforeType = resultType.GetBasicType();

	resultType.PtrLevelUp();

	SetVarPtrToReg(REG_RAX,&RelativeVar);

	// TODO: 取り除く（この動きはObjPtrに託す）
	/*
	if( beforeType == DEF_OBJECT && lstrcmpi( Parameter, "This" ) != 0 ){
		//参照をオブジェクトポインタに変更

		//mov rax,qword ptr[rax]
		compiler.codeGenerator.op_mov_RM( sizeof(_int64), REG_RAX, REG_RAX, 0, MOD_BASE );

		SetError(-120,NULL,cp);
	}*/
}
void Opcode_Func_ObjPtr( const char *Parameter, Type &resultType, bool isCallOn ){
	if( isCallOn == false ){
		// 戻り値の型を取得するだけ

		//変数のアドレスを取得
		if(!GetVarType( Parameter, resultType, true )) return;

		resultType.PtrLevelUp();

		return;
	}

	RELATIVE_VAR RelativeVar;

	//変数のアドレスを取得
	if(!GetVarOffsetReadOnly( Parameter, &RelativeVar, resultType )) return;

	int beforeType = resultType.GetBasicType();

	resultType.PtrLevelUp();

	SetVarPtrToReg(REG_RAX,&RelativeVar);

	if( lstrcmpi( Parameter, "This" )==0 ){
		// Thisの場合は特別にオブジェクトポインタが返ってくるので、何もせずに抜ける
	}
	else if( beforeType == DEF_OBJECT ){
		//参照をオブジェクトポインタに変更

		//mov rax,qword ptr[rax]
		compiler.codeGenerator.op_mov_RM( sizeof(_int64), REG_RAX, REG_RAX, 0, MOD_BASE );
	}
	else{
		SetError(134,NULL,cp );
	}
}

void Opcode_Func_unsafe_call( const char *paramsStr, Type &resultType, bool isCallOn )
{
	if( isCallOn )
	{
		int i = 0;
		char methodPtrParamStr[8192];
		GetOneParameter( paramsStr, i, methodPtrParamStr );
		UnsafeCall( methodPtrParamStr, paramsStr + i );
	}

	resultType = UserProc::CompilingUserProc().ReturnType();
}

void Opcode_Func_GetPtrData( const char *Parameter, const int type ){
	int reg=REG_RAX;
	Type tempType;
	if( !NumOpe(&reg,Parameter,Type(),tempType) ){
		return;
	}
	if(!tempType.IsWhole()){
		SetError(11,Parameter,cp);
		return;
	}

	if(type==DEF_DOUBLE){
		//movlpd xmm0,qword ptr[rax]
		compiler.codeGenerator.op_movlpd_RM(REG_XMM0,REG_RAX,0,MOD_BASE);
	}
	else if(type==DEF_SINGLE){
		//movss xmm0,dword ptr[rax]
		compiler.codeGenerator.op_movss_RM(REG_XMM0,REG_RAX,0,MOD_BASE);
	}
	else{
		//mov rax,ptr[rax]
		compiler.codeGenerator.op_mov_RM(Type(type).GetSize(),REG_RAX,REG_RAX,0,MOD_BASE);
	}
}

bool Opcode_CallFunc( const char *Parameter, const int FuncNum, Type &resultType, bool isCallOn ){
	switch(FuncNum){
		case FUNC_LEN:
			if( isCallOn ) Opcode_Func_Len(Parameter);
			resultType.SetBasicType( DEF_LONG );
			break;
		case FUNC_ADDRESSOF:
			if( isCallOn ) Opcode_Func_AddressOf(Parameter);
			resultType.SetBasicType( DEF_PTR_VOID );
			break;
		case FUNC_SIZEOF:
			if( isCallOn ) Opcode_Func_SizeOf(Parameter);
			resultType.SetBasicType( DEF_LONG );
			break;
		case FUNC_VARPTR:
			Opcode_Func_VarPtr( Parameter, resultType, isCallOn );
			break;
		case FUNC_OBJPTR:
			Opcode_Func_ObjPtr( Parameter, resultType, isCallOn );
			break;
		case FUNC_UNSAFE_CALL:
			Opcode_Func_unsafe_call( Parameter, resultType, isCallOn );
			break;

		case FUNC_GETDOUBLE:
			if( isCallOn ) Opcode_Func_GetPtrData(Parameter,DEF_DOUBLE);
			resultType.SetBasicType( DEF_DOUBLE );
			break;
		case FUNC_GETSINGLE:
			if( isCallOn ) Opcode_Func_GetPtrData(Parameter,DEF_SINGLE);
			resultType.SetBasicType( DEF_SINGLE );
			break;
		case FUNC_GETQWORD:
			if( isCallOn ) Opcode_Func_GetPtrData(Parameter,DEF_QWORD);
			resultType.SetBasicType( DEF_QWORD );
			break;
		case FUNC_GETDWORD:
			if( isCallOn ) Opcode_Func_GetPtrData(Parameter,DEF_DWORD);
			resultType.SetBasicType( DEF_DWORD );
			break;
		case FUNC_GETWORD:
			if( isCallOn ) Opcode_Func_GetPtrData(Parameter,DEF_WORD);
			resultType.SetBasicType( DEF_WORD );
			break;
		case FUNC_GETBYTE:
			if( isCallOn ) Opcode_Func_GetPtrData(Parameter,DEF_BYTE);
			resultType.SetBasicType( DEF_BYTE );
			break;
		default:
			return false;
	}
	return true;
}