#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, "CUDbl" ) == 0 )			return FUNC_CUDBL;
	if( lstrcmpi( FuncName, "Fix" ) == 0 )				return FUNC_FIX;
	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, "__delegate_dynamicmethod_call" ) == 0 )	return FUNC_DELEGATE_DYNAMICMETHOD_CALL;
	if( lstrcmpi( FuncName, "__delegate_staticmethod_call" ) == 0 )		return FUNC_DELEGATE_STATICMETHOD_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_Fix(const char *lpszParms){
	Type resultType;
	if( !NumOpe( lpszParms, Type(), resultType ) ){
		return;
	}

	if( resultType.IsDouble() ){
		//fld qword ptr[esp]
		compiler.codeGenerator.op_fld_ptr_esp(DEF_DOUBLE);

		//fnstcw word ptr[esp]
		compiler.codeGenerator.PutOld(
			(char)0xD9,
			(char)0x3C,
			(char)0x24
		);

		//mov ax,word ptr[esp]
		compiler.codeGenerator.op_mov_RM( sizeof(short), REG_EAX, REG_ESP, 0, MOD_BASE );

		//or ah,0Ch
		compiler.codeGenerator.PutOld(
			(char)0x80,
			(char)0xCC,
			(char)0x0C
		);

		//mov word ptr[esp-2],ax
		compiler.codeGenerator.op_mov_MR( sizeof(short), REG_EAX, REG_ESP, -2, MOD_BASE_DISP8 );

		//fldcw word ptr[esp-2]
		compiler.codeGenerator.PutOld(
			(char)0xD9,
			(char)0x6C,
			(char)0x24,
			(char)0xFE
		);

		//fistp dword ptr[esp+4]
		compiler.codeGenerator.PutOld(
			(char)0xDB,
			(char)0x5C,
			(char)0x24,
			(char)0x04
		);

		//fldcw word ptr[esp]
		compiler.codeGenerator.PutOld(
			(char)0xD9,
			(char)0x2C,
			(char)0x24
		);

		//add esp,4
		compiler.codeGenerator.op_add_esp(4);
	}
	else if( resultType.IsSingle() ){
		//fld dword ptr[esp]
		compiler.codeGenerator.op_fld_ptr_esp(DEF_SINGLE);

		//sub esp,4
		compiler.codeGenerator.op_sub_esp(4);

		//fnstcw word ptr[esp]
		compiler.codeGenerator.PutOld(
			(char)0xD9,
			(char)0x3C,
			(char)0x24
		);

		//mov ax,word ptr[esp]
		compiler.codeGenerator.op_mov_RM( sizeof(short), REG_EAX, REG_ESP, 0, MOD_BASE );

		//or ah,0Ch
		compiler.codeGenerator.PutOld(
			(char)0x80,
			(char)0xCC,
			(char)0x0C
		);

		//mov word ptr[esp-2],ax
		compiler.codeGenerator.op_mov_MR( sizeof(short), REG_EAX, REG_ESP, -2, MOD_BASE_DISP8 );

		//fldcw word ptr[esp-2]
		compiler.codeGenerator.PutOld(
			(char)0xD9,
			(char)0x6C,
			(char)0x24,
			(char)0xFE
		);

		//fistp dword ptr[esp+4]
		compiler.codeGenerator.PutOld(
			(char)0xDB,
			(char)0x5C,
			(char)0x24,
			(char)0x04
		);

		//fldcw word ptr[esp]
		compiler.codeGenerator.PutOld(
			(char)0xD9,
			(char)0x2C,
			(char)0x24
		);

		//add esp,4
		compiler.codeGenerator.op_add_esp(4);
	}
	else if( resultType.Is64() ){
		//pop eax
		compiler.codeGenerator.op_pop(REG_EAX);

		//add esp,4
		compiler.codeGenerator.op_add_esp(4);

		//push eax
		compiler.codeGenerator.op_push(REG_EAX);
	}

	//pop eax
	compiler.codeGenerator.op_pop(REG_EAX);
}

void Opcode_Func_CUDbl(const char *Parameter){
	Type resultType;
	if( !NumOpe(Parameter,Type(),resultType) ){
		return;
	}
	ChangeTypeToLong(resultType.GetBasicType());

	//pop eax
	compiler.codeGenerator.op_pop(REG_EAX);

	//push 0
	compiler.codeGenerator.op_push_V( 0 );

	//push eax
	compiler.codeGenerator.op_push(REG_EAX);

	//fild qword ptr[esp]
	compiler.codeGenerator.op_fld_ptr_esp(DEF_INT64);

	//add esp,8
	compiler.codeGenerator.op_add_esp(8);
}
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(temporary,Type(),Type());

		//pop eax
		compiler.codeGenerator.op_pop(REG_EAX);

		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 eax,typeSize
	compiler.codeGenerator.op_mov_RV( REG_EAX, typeSize );
}

void _Opcode_Func_AddressOf( const char *methodInstanceName, const UserProc &userProc )
{
	if( userProc.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( methodInstanceName, ObjectName, referenceKind );

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

				//mov ecx,eax
				compiler.codeGenerator.op_mov_RR(REG_ECX,REG_EAX);

				//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 ecx,dword ptr[ecx]
					compiler.codeGenerator.op_mov_RM(sizeof(long),REG_ECX,REG_ECX,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 edx,dword ptr[ecx]
		compiler.codeGenerator.op_mov_RM( sizeof(long), REG_EDX, REG_ECX, 0, MOD_BASE );

		int i2 = pobj_c->GetFuncNumInVtbl( &userProc );

		//mov eax,dword ptr[edx+func_index]
		if(i2*PTR_SIZE<=0x7F){
			compiler.codeGenerator.op_mov_RM(sizeof(long),REG_EAX,REG_EDX,i2*PTR_SIZE,MOD_BASE_DISP8);
		}
		else{
			compiler.codeGenerator.op_mov_RM(sizeof(long),REG_EAX,REG_EDX,i2*PTR_SIZE,MOD_BASE_DISP32);
		}
	}
	else{
		//一般の関数

		//mov eax,ProcAddr
		compiler.codeGenerator.op_addressof( REG_EAX, &userProc );
	}

	userProc.Using();
}
void Opcode_CreateDelegate( const CClass &dgClass, const char *methodInstanceName, const UserProc &userProc )
{
	/////////////////////////////////////////////////////////////////
	// 関数ポインタをpush
	/////////////////////////////////////////////////////////////////

	//push AddressOf(userProc)
	_Opcode_Func_AddressOf( methodInstanceName, userProc );
	compiler.codeGenerator.op_push( REG_EAX );


	/////////////////////////////////////////////////////////////////
	// オブジェクト ポインタをpush
	/////////////////////////////////////////////////////////////////

	// オブジェクト名を取得
	char objectName[VN_SIZE];
	char memberName[VN_SIZE];
	char *thisPtrName = "This";
	Type type;
	if( SplitMemberName( methodInstanceName, objectName, memberName ) )
	{
		if( GetVarType( objectName, type, false ) )
		{
			thisPtrName = objectName;
		}
	}

	// オブジェクト ポインタを取得
	RELATIVE_VAR relativeVar;
	GetVarOffsetReadOnly( thisPtrName, &relativeVar, type );
	if( !type.IsObject() )
	{
		extern int cp;
		SetError(1,NULL,cp);
		return;
	}

	SetVarPtrToEax( &relativeVar );

	//mov eax,dword ptr[eax]
	compiler.codeGenerator.op_mov_RM( sizeof(long), REG_EAX, REG_EAX, 0, MOD_BASE );

	//push eax
	compiler.codeGenerator.op_push( REG_EAX );


	/////////////////////////////////////////////////////////////////
	// call _System_CreateSimpleDynamicDelegate
	/////////////////////////////////////////////////////////////////

	std::vector<const UserProc *> subs;
	dgClass.GetStaticMethods().Enum( "_CreateDelegate", subs );

	// call _System_CreateSimpleDynamicDelegate
	compiler.codeGenerator.op_call( subs[0] );
}
void Opcode_Func_AddressOf( const char *name, const Type &baseType, bool isCallOn, Type &resultType ){
	extern int cp;
	const UserProc *pUserProc;

	const Parameters *pBaseParams = NULL;
	if( baseType.IsProcPtr() )
	{
		// 左辺で関数ポインタを要求されているとき
		pBaseParams = &compiler.GetObjectModule().meta.GetProcPointers()[baseType.GetIndex()]->Params();
	}
	else if( baseType.IsDelegate() )
	{
		// 左辺でデリゲートを要求されているとき
		pBaseParams = &baseType.GetClass().GetDelegate().Params();
	}

	if( pBaseParams )
	{
		//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, *pBaseParams, Type() );

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

	if( baseType.IsDelegate() )
	{
		if( isCallOn )
		{
			// デリゲートのとき
			Opcode_CreateDelegate( baseType.GetClass(), name, *pUserProc );
		}
		resultType = baseType;
	}
	else
	{
		if( isCallOn )
		{
			// 関数ポインタのとき
			_Opcode_Func_AddressOf( name, *pUserProc );
		}
		resultType.SetBasicType( DEF_PTR_VOID );
	}
}
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 eax,size
	compiler.codeGenerator.op_mov_RV( REG_EAX, 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();

	SetVarPtrToEax(&RelativeVar);
}
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();

	SetVarPtrToEax(&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 eax,dword ptr[eax]
		compiler.codeGenerator.op_mov_RM( sizeof(long), REG_EAX, REG_EAX, 0, MOD_BASE );
	}
	else{
		SetError(134,NULL,cp );
	}
}

void Opcode_Func_delegate_call( const char *paramsStr, Type &resultType, bool isDynamicCall, bool isCallOn )
{
	if( isCallOn )
	{
		int i = 0;
		char methodPtrParamStr[VN_SIZE];
		i = GetOneParameter( paramsStr, i, methodPtrParamStr );

		char objPtrValueStr[VN_SIZE];
		if( isDynamicCall )
		{
			i = GetOneParameter( paramsStr, i, objPtrValueStr );
		}

		Opcode_CallDelegate( compiler.pCompilingClass->GetDelegate(), methodPtrParamStr, objPtrValueStr, paramsStr + i );
	}

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

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

	if(type==DEF_DOUBLE){
		//pop eax
		compiler.codeGenerator.op_pop(REG_EAX);

		//fld qword ptr[eax]
		compiler.codeGenerator.PutOld(
			(char)0xDD,
			(char)0x00
		);
	}
	else if(type==DEF_SINGLE||type==DEF_DWORD){
		//pop eax
		compiler.codeGenerator.op_pop(REG_EAX);

		//mov eax,dword ptr[eax]
		compiler.codeGenerator.op_mov_RM( sizeof(long), REG_EAX, REG_EAX, 0, MOD_BASE );
	}
	else if(type==DEF_QWORD){
		//pop ecx
		compiler.codeGenerator.op_pop(REG_ECX);

		//mov eax,dword ptr[ecx]
		compiler.codeGenerator.op_mov_RM(sizeof(long),REG_EAX,REG_ECX,0,MOD_BASE);

		//mov edx,dword ptr[ecx+sizeof(long)]
		compiler.codeGenerator.op_mov_RM(sizeof(long),REG_EDX,REG_ECX,sizeof(long),MOD_BASE_DISP8);
	}
	else if(type==DEF_WORD){
		//pop ebx
		compiler.codeGenerator.op_pop(REG_EBX);

		//xor eax,eax
		compiler.codeGenerator.op_xor_RR(REG_EAX);

		//mov ax,word ptr[ebx]
		compiler.codeGenerator.op_mov_RM( sizeof(short), REG_EAX, REG_EBX, 0, MOD_BASE );
	}
	else if(type==DEF_BYTE){
		//pop ebx
		compiler.codeGenerator.op_pop(REG_EBX);

		//xor eax,eax
		compiler.codeGenerator.op_xor_RR(REG_EAX);

		//mov al,byte ptr[ebx]
		compiler.codeGenerator.op_mov_RM( sizeof(char), REG_EAX, REG_EBX, 0, MOD_BASE );
	}
}

bool Opcode_CallFunc( const char *Parameter, const int FuncNum, const Type &baseType, Type &resultType, bool isCallOn )
{
	switch(FuncNum){
		case FUNC_FIX:
			if( isCallOn ) Opcode_Func_Fix(Parameter);
			resultType.SetBasicType( DEF_LONG );
			break;
		case FUNC_CUDBL:
			if( isCallOn ) Opcode_Func_CUDbl(Parameter);
			resultType.SetBasicType( DEF_DOUBLE );
			break;
		case FUNC_LEN:
			if( isCallOn ) Opcode_Func_Len(Parameter);
			resultType.SetBasicType( DEF_LONG );
			break;
		case FUNC_ADDRESSOF:
			Opcode_Func_AddressOf( Parameter, baseType, isCallOn, resultType );
			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_DELEGATE_DYNAMICMETHOD_CALL:
			Opcode_Func_delegate_call( Parameter, resultType, true, isCallOn );
			break;
		case FUNC_DELEGATE_STATICMETHOD_CALL:
			Opcode_Func_delegate_call( Parameter, resultType, false, 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;
}