void ClipLine( POINT &Start, POINT &End )
{
INT32 ThisSector = GetSector( End ) ;
switch ( CaseTable[(INT32)LastSector][(INT32)ThisSector] )
{
case 01 : GenLineToBelowLeft() ; break ;
case 02 : GenLineToBelowRight() ; break ;
case 03 : GenLineToAboveLeft() ; break ;
case 04 : GenLineToAboveRight() ; break ;
case 05 : GenLine(Start) ;
GenLine(End) ; break ;
case 06 : if ( OFirstPoint )
GenLine(Start) ;
GenLine(End) ; break ;
case 07 :
POINT Middle ;
Middle.x = (Start.x+End.x) >> 1 ;
Middle.y = (Start.y+End.y) >> 1 ;
ClipLine( Start,Middle ) ;
ClipLine( Middle,End ) ;
return ;
case 10 : GenLineToBelowLeft() ; GenLineToBelowRight() ; break ;
case 11 : GenLineToBelowLeft() ; GenLineToAboveLeft() ; break ;
case 12 : GenLineToBelowRight() ; GenLineToAboveRight() ; break ;
case 13 : GenLineToBelowRight() ; GenLineToBelowLeft() ; break ;
case 14 : GenLineToAboveLeft() ; GenLineToAboveRight() ; break ;
case 15 : GenLineToAboveLeft() ; GenLineToBelowLeft() ; break ;
case 16 : GenLineToAboveRight() ; GenLineToBelowRight() ; break ;
case 17 : GenLineToAboveRight() ; GenLineToAboveLeft() ; break ;
}
LastSector = ThisSector ;
}
void CodeGenerator::GenProgramStart()
{
GenLine( ".386P" );
GenLine( ".MODEL FLAT" );
GenLine( "INCLUDELIB LIBCMT" );
GenLine( "EXTRN _printf : NEAR" );
GenLine( ".code\n" );
}
void CodeGenerator::GenFuncCall( std::string funcName, int paramCountCall )
{
GenReverseStack( paramCountCall );
GenBlockHeader( "Call " + funcName + " Function" );
GenLine( "CALL _" + funcName );
GenLine( "add esp, " + toString( 4 * paramCountCall ) + "d" );
GenPush( "eax" );
}
int CodeGenerator::GenWhileMiddle()
{
int whileFinishLabel = CreateLabel();
GenPop( "eax" );
GenLine( "cmp eax, 0" );
GenLine( "JE L" + toString( whileFinishLabel ) );
return whileFinishLabel;
}
void CodeGenerator::GenStringPush( std::string str )
{
std::string strVar = "S" + toString( mStrCount++ );
GenLine( ".data" );
GenLine( strVar + " BYTE \"" + str + "\", 00h" );
GenLine( ".code" );
GenPush( "OFFSET " + strVar );
}
void CodeGenerator::GenDivision()
{
GenBlockHeader( "Divide" );
GenPop( "ecx" );
GenPop( "eax" );
GenLine( "CDQ" );
GenLine( "idiv ecx" );
GenPush( "eax" );
}
int CodeGenerator::GenIfStart()
{
GenBlockHeader( "If statement" );
GenPop( "eax" );
GenLine( "cmp eax, 0" );
int endIflabel = CreateLabel();
GenLine( "JE L" + toString( endIflabel ) );
return endIflabel;
}
void CodeGenerator::GenFuncEnd( std::string funcName, int retLabel )
{
funcName = '_' + funcName;
GenLine();
GenLabel( retLabel );
GenMov( "esp", "ebp" );
GenPop( "ebp" );
GenLine( "RET" );
GenLine( funcName + " ENDP" );
}
int CodeGenerator::GenFuncStart( std::string funcName )
{
GenBlockHeader( "Function " + funcName + " Declaration" );
funcName = '_' + funcName;
GenLine( "PUBLIC " + funcName );
GenLine( funcName + " PROC" );
GenPush( "ebp" );
GenMov( "ebp","esp" );
GenLine();
return CreateLabel();
}
void CodeGenerator::GenNot()
{
GenBlockHeader( "Not" );
GenPop( "eax" );
GenMov( "edx", "0" );
GenLine( "cmp eax, 0" );
GenLine( "JNE L" + toString( ++mLabelCount ) );
GenLine( "inc edx" );
GenLabel( mLabelCount );
GenPush( "edx" );
}
void CodeGenerator::GenOr()
{
GenBlockHeader( "Or" );
GenPop( "ecx" );
GenPop( "eax" );
GenMov( "edx", "0" );
GenLine( "or eax, ecx" );
GenLine( "cmp eax, 0" );
GenLine( "JE L" + toString( ++mLabelCount ) );
GenLine( "inc edx" );
GenLabel( mLabelCount );
GenPush( "edx" );
}
void CodeGenerator::GenAnd()
{
GenBlockHeader( "And" );
GenPop( "ecx" );
GenPop( "eax" );
GenLine( "imul ecx" );
GenMov( "edx", "0" );
GenLine( "cmp eax, 0" );
mAsmCode += "JE";
mAsmCode += " L" + toString( ++mLabelCount ) + "\n";
GenLine( "inc edx" );
GenLabel( mLabelCount );
GenPush( "edx" );
}
void CodeGenerator::GenNegate()
{
GenBlockHeader( "Negate" );
GenPop( "eax" );
GenLine( "neg eax" );
GenPush( "eax" );
}
int _tmain(int argc, _TCHAR* argv[])
{
GenLine();
// char utf8Buf[256];
// CommonLib::CString str = "string";
// str.exportToUTF8(utf8Buf, 255);
// CompressShape();
// TestTableWks();
//testLoadXML1();
//return 1;
// TestShapeIndex();
//
/*CommonLib::CString s1(L"vfdgggf");
CommonLib::CString s2(s1);
ITest *pTest = new ITest(s1);
delete pTest;*/
//TestShapeIndex();
// TestSQLiteWks();
//TestEmbDBWks();
//TestXML();
/*for(int i =0; i < 100000000; ++i)
{
CommonLib::CString s1 = L"vfdgggf";
CommonLib::CString s2 = s1;
}*/
return 0;
}
// GenBinaryOperation
void CodeGenerator::GenBinaryOperation( std::string operationName )
{
GenBlockHeader( operationName );
GenPop( "ecx" );
GenPop( "eax" );
GenLine( operationName + " eax, ecx" );
GenPush( "eax" );
}
void CodeGenerator::GenMultiplication()
{
GenBlockHeader( "Multiply" );
GenPop( "ecx" );
GenPop( "eax" );
GenLine( "imul ecx" );
GenPush( "eax" );
}
void CodeGenerator::GenCompare( std::string sign )
{
GenBlockHeader( "Compare" );
GenPop( "ecx" );
GenPop( "eax" );
GenMov( "edx", "0" );
GenLine( "cmp eax, ecx" );
if( sign == "==" ) mAsmCode += "JNE ";
if( sign == "!=" ) mAsmCode += "JE";
if( sign == ">" ) mAsmCode += "JLE";
if( sign == "<" ) mAsmCode += "JGE";
if( sign == ">=" ) mAsmCode += "JL";
if( sign == "<=" ) mAsmCode += "JG";
mAsmCode += " L" + toString( ++mLabelCount ) + "\n";
GenLine( "inc edx" );
GenLabel( mLabelCount );
GenPush( "edx" );
}
void CodeGenerator::GenReverseStack( int depth )
{
if( depth < 2 ) return;
GenBlockHeader( "Reversing last " + toString( depth ) + " stack items" );
GenLine( ".data" );
// allocate enough memory
for( int i = 1; i <= depth; ++i )
{
GenLine( "stackReveseVar" + toString( mStackReverseCount++ ) + " DWORD ?" );
}
GenLine( ".code" );
// pop into memory
for( int i = depth; i >= 1; --i )
{
GenPop( "stackReveseVar" + toString( mStackReverseCount - i ) );
}
for( int i = depth; i >= 1; --i )
{
GenPush( "stackReveseVar" + toString( mStackReverseCount - i ) );
}
}
void ClipCurve( POINT &C0, POINT &C1, POINT &C2, POINT &C3 )
{
INT32 C1Sector = GetSector( C1 ) ;
INT32 C2Sector = GetSector( C2 ) ;
INT32 ThisSector = GetSector( C3 ) ;
// if ( ( ( C1Sector==LastSector || C1Sector==ThisSector ) &&
// ( C2Sector==LastSector || C2Sector==ThisSector ) ) ||
// ( Region[LastSector] & Region[C1Sector] & Region[C2Sector] & Region[ThisSector] ) )
INT32 RegionUnion = Region[LastSector] & Region[C1Sector] & Region[C2Sector] & Region[ThisSector];
if ( ( RegionUnion & 0x0ff ) ||
( (RegionUnion & 0x300) && (LastSector!=ThisSector || LastSector==12) ) ||
( (C1Sector==LastSector || C1Sector==ThisSector) && (C2Sector==LastSector || C2Sector==ThisSector) ) )
{
switch ( CaseTable[(INT32)LastSector][(INT32)ThisSector] )
{
case 01 : GenLineToBelowLeft() ; break ;
case 02 : GenLineToBelowRight() ; break ;
case 03 : GenLineToAboveLeft() ; break ;
case 04 : GenLineToAboveRight() ; break ;
case 05 : GenLine(C0,FALSE) ;
GenCurve(C1,C2,C3) ; break ;
case 06 : if ( OFirstPoint )
GenLine(C0,FALSE) ;
GenCurve(C1,C2,C3) ; break ;
case 07 : SplitCurve(C0,C1,C2,C3) ; return ;
case 10 : GenLineToBelowLeft() ; GenLineToBelowRight() ; break ;
case 11 : GenLineToBelowLeft() ; GenLineToAboveLeft() ; break ;
case 12 : GenLineToBelowRight() ; GenLineToAboveRight() ; break ;
case 13 : GenLineToBelowRight() ; GenLineToBelowLeft() ; break ;
case 14 : GenLineToAboveLeft() ; GenLineToAboveRight() ; break ;
case 15 : GenLineToAboveLeft() ; GenLineToBelowLeft() ; break ;
case 16 : GenLineToAboveRight() ; GenLineToBelowRight() ; break ;
case 17 : GenLineToAboveRight() ; GenLineToAboveLeft() ; break ;
}
LastSector = ThisSector ;
}
else
SplitCurve(C0,C1,C2,C3) ;
}
void CodeGenerator::GenLabel( int labelNum )
{
GenLine( "L" + toString( labelNum ) + ":" );
}
void CodeGenerator::GenPop( std::string reg )
{
GenLine( "pop " + reg );
}
void CodeGenerator::GenMov( std::string toStr, std::string fromStr )
{
GenLine( "mov " + toStr + ", " + fromStr );
}
void CodeGenerator::GenBlockHeader( std::string blockName )
{
GenLine( "\n;--------------- " + blockName + " ---------------" );
}
void CodeGenerator::GenProgramEnd()
{
GenLine( "\nEND" );
}
void CodeGenerator::GenGlobalVarDef( std::string varName )
{
GenLine( ".data" );
GenLine( '_' + varName + " DWORD ?" );
GenLine( ".code" );
}
void CodeGenerator::GenLocalVarDef()
{
GenLine( "sub esp, 4" );
}
void CodeGenerator::GenDoMiddle( int doStartLabel )
{
GenPop( "eax" );
GenLine( "cmp eax, 0" );
GenLine( "JNE L" + toString( doStartLabel ) );
}
void CodeGenerator::GenPush( std::string reg )
{
GenLine( "push " + reg );
}
void CodeGenerator::GenPush( int n )
{
GenLine( "push " + toString( n ) + "d" );
}
void CodeGenerator::GenJmp( int label )
{
GenLine( "JMP L" + toString( label ) );
}
