source: dev/BasicCompiler64/Compile_Func.cpp@ 143

#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,"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, pobj_DBClass->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;
    }

    int SubScripts[MAX_ARRAYDIM];
    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
    op_mov_RV(sizeof(_int64),REG_RAX,typeSize);

    return;
}
void Opcode_Func_AddressOf( const char *name ){
    extern int cp;
    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<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,Smoothie::Meta::procPointers[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];
        int RefType;
        SplitObjectName(name,ObjectName,&RefType);

        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.GetBasicType()!=RefType) SetError(104,ObjectName,cp);

                if(type.IsObjectPtr()){
                    //mov rcx,qword ptr[rcx]
                    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=pobj_CompilingClass;
        }


        //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]
        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){
            op_mov_RM(sizeof(_int64),REG_RAX,REG_R11,i2*PTR_SIZE,MOD_BASE_DISP8);
        }
        else{
            op_mov_RM(sizeof(_int64),REG_RAX,REG_R11,i2*PTR_SIZE,MOD_BASE_DISP32);
        }
    }
    else{
        //一般の関数

        //mov rax,ProcAddr
        op_mov_RV(sizeof(_int64),REG_RAX,0);
        obp-=sizeof(long);
        pobj_SubAddrSchedule->add(pUserProc,0);
        obp+=sizeof(long);
    }

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

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

    //mov rax,size
    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]
        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]
        op_mov_RM( sizeof(_int64), REG_RAX, REG_RAX, 0, MOD_BASE );
    }
    else{
        SetError(134,NULL,cp );
    }
}
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]
        op_movlpd_RM(REG_XMM0,REG_RAX,0,MOD_BASE);
    }
    else if(type==DEF_SINGLE){
        //movss xmm0,dword ptr[rax]
        op_movss_RM(REG_XMM0,REG_RAX,0,MOD_BASE);
    }
    else{
        //mov rax,ptr[rax]
        op_mov_RM(GetTypeSize(type,-1),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_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;
}