/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_basic.hxx"

#include <stdlib.h>
#include <rtl/math.hxx>
#include <basic/sbuno.hxx>
#include "runtime.hxx"
#include "sbintern.hxx"
#include "iosys.hxx"
#include "image.hxx"
#include "sbunoobj.hxx"
#include "errobject.hxx"

bool checkUnoObjectType( SbUnoObject* refVal, const ::rtl::OUString& aClass );

// Laden einer numerischen Konstanten (+ID)

void SbiRuntime::StepLOADNC( sal_uInt32 nOp1 )
{
	SbxVariable* p = new SbxVariable( SbxDOUBLE );

	// #57844 Lokalisierte Funktion benutzen
	String aStr = pImg->GetString( static_cast<short>( nOp1 ) );
	// Auch , zulassen !!!
	sal_uInt16 iComma = aStr.Search( ',' );
	if( iComma != STRING_NOTFOUND )
	{
		String aStr1 = aStr.Copy( 0, iComma );
		String aStr2 = aStr.Copy( iComma + 1 );
		aStr = aStr1;
		aStr += '.';
		aStr += aStr2;
	}
    double n = ::rtl::math::stringToDouble( aStr, '.', ',', NULL, NULL );

	p->PutDouble( n );
	PushVar( p );
}

// Laden einer Stringkonstanten (+ID)

void SbiRuntime::StepLOADSC( sal_uInt32 nOp1 )
{
	SbxVariable* p = new SbxVariable;
	p->PutString( pImg->GetString( static_cast<short>( nOp1 ) ) );
	PushVar( p );
}

// Immediate Load (+Wert)

void SbiRuntime::StepLOADI( sal_uInt32 nOp1 )
{
	SbxVariable* p = new SbxVariable;
	p->PutInteger( static_cast<sal_Int16>( nOp1 ) );
	PushVar( p );
}

// Speichern eines named Arguments in Argv (+Arg-Nr ab 1!)

void SbiRuntime::StepARGN( sal_uInt32 nOp1 )
{
	if( !refArgv )
		StarBASIC::FatalError( SbERR_INTERNAL_ERROR );
	else
	{
		String aAlias( pImg->GetString( static_cast<short>( nOp1 ) ) );
		SbxVariableRef pVal = PopVar();
		refArgv->Put( pVal, nArgc );
		refArgv->PutAlias( aAlias, nArgc++ );
	}
}

// Konvertierung des Typs eines Arguments in Argv fuer DECLARE-Fkt. (+Typ)

void SbiRuntime::StepARGTYP( sal_uInt32 nOp1 )
{
	if( !refArgv )
		StarBASIC::FatalError( SbERR_INTERNAL_ERROR );
	else
	{
		sal_Bool bByVal = (nOp1 & 0x8000) != 0;			// Ist BYVAL verlangt?
		SbxDataType t = (SbxDataType) (nOp1 & 0x7FFF);
		SbxVariable* pVar = refArgv->Get( refArgv->Count() - 1 );	// letztes Arg

		// BYVAL prüfen
		if( pVar->GetRefCount() > 2 )		// 2 ist normal für BYVAL
		{
			// Parameter ist eine Referenz
			if( bByVal )
			{
				// Call by Value ist verlangt -> Kopie anlegen
				pVar = new SbxVariable( *pVar );
				pVar->SetFlag( SBX_READWRITE );
				refExprStk->Put( pVar, refArgv->Count() - 1 );
			}
			else
				pVar->SetFlag( SBX_REFERENCE );		// Ref-Flag für DllMgr
		}
		else
		{
			// Parameter ist KEINE Referenz
			if( bByVal )
				pVar->ResetFlag( SBX_REFERENCE );	// Keine Referenz -> OK
			else
				Error( SbERR_BAD_PARAMETERS );		// Referenz verlangt
		}

		if( pVar->GetType() != t )
		{
			// Variant, damit richtige Konvertierung
			// Ausserdem Fehler, wenn SbxBYREF
			pVar->Convert( SbxVARIANT );
			pVar->Convert( t );
		}
	}
}

// String auf feste Laenge bringen (+Laenge)

void SbiRuntime::StepPAD( sal_uInt32 nOp1 )
{
	SbxVariable* p = GetTOS();
	String& s = (String&)(const String&) *p;
	if( s.Len() > nOp1 )
		s.Erase( static_cast<xub_StrLen>( nOp1 ) );
	else
		s.Expand( static_cast<xub_StrLen>( nOp1 ), ' ' );
}

// Sprung (+Target)

void SbiRuntime::StepJUMP( sal_uInt32 nOp1 )
{
#ifdef DBG_UTIL
	// #QUESTION shouln't this be 
	// if( (sal_uInt8*)( nOp1+pImagGetCode() ) >= pImg->GetCodeSize() )
	if( nOp1 >= pImg->GetCodeSize() )
		StarBASIC::FatalError( SbERR_INTERNAL_ERROR );
#endif
	pCode = (const sal_uInt8*) pImg->GetCode() + nOp1;
}

// TOS auswerten, bedingter Sprung (+Target)

void SbiRuntime::StepJUMPT( sal_uInt32 nOp1 )
{
	SbxVariableRef p = PopVar();
	if( p->GetBool() )
		StepJUMP( nOp1 );
}

// TOS auswerten, bedingter Sprung (+Target)

void SbiRuntime::StepJUMPF( sal_uInt32 nOp1 )
{
	SbxVariableRef p = PopVar();
	if( !p->GetBool() )
		StepJUMP( nOp1 );
}

// TOS auswerten, Sprung in JUMP-Tabelle (+MaxVal)
// Sieht so aus:
// ONJUMP 2
// JUMP target1
// JUMP target2
// ...
//Falls im Operanden 0x8000 gesetzt ist, Returnadresse pushen (ON..GOSUB)

void SbiRuntime::StepONJUMP( sal_uInt32 nOp1 )
{
	SbxVariableRef p = PopVar();
	sal_Int16 n = p->GetInteger();
	if( nOp1 & 0x8000 )
	{
		nOp1 &= 0x7FFF;
		//PushGosub( pCode + 3 * nOp1 );
		PushGosub( pCode + 5 * nOp1 );
	}
	if( n < 1 || static_cast<sal_uInt32>(n) > nOp1 )
		n = static_cast<sal_Int16>( nOp1 + 1 );
	//nOp1 = (sal_uInt32) ( (const char*) pCode - pImg->GetCode() ) + 3 * --n;
	nOp1 = (sal_uInt32) ( (const char*) pCode - pImg->GetCode() ) + 5 * --n;
	StepJUMP( nOp1 );
}

// UP-Aufruf (+Target)

void SbiRuntime::StepGOSUB( sal_uInt32 nOp1 )
{
	PushGosub( pCode );
	if( nOp1 >= pImg->GetCodeSize() )
		StarBASIC::FatalError( SbERR_INTERNAL_ERROR );
	pCode = (const sal_uInt8*) pImg->GetCode() + nOp1;
}

// UP-Return (+0 oder Target)

void SbiRuntime::StepRETURN( sal_uInt32 nOp1 )
{
	PopGosub();
	if( nOp1 )
		StepJUMP( nOp1 );
}

// FOR-Variable testen (+Endlabel)

void SbiRuntime::StepTESTFOR( sal_uInt32 nOp1 )
{
	if( !pForStk )
	{
		StarBASIC::FatalError( SbERR_INTERNAL_ERROR );
		return;
	}

	bool bEndLoop = false;
	switch( pForStk->eForType )
	{
		case FOR_TO:
		{
			SbxOperator eOp = ( pForStk->refInc->GetDouble() < 0 ) ? SbxLT : SbxGT;
			if( pForStk->refVar->Compare( eOp, *pForStk->refEnd ) )
				bEndLoop = true;
			break;
		}
		case FOR_EACH_ARRAY:
		{
			SbiForStack* p = pForStk;
			if( p->pArrayCurIndices == NULL )
			{
				bEndLoop = true;
			}
			else
			{
				SbxDimArray* pArray = (SbxDimArray*)(SbxVariable*)p->refEnd;
				short nDims = pArray->GetDims();

				// Empty array?
				if( nDims == 1 && p->pArrayLowerBounds[0] > p->pArrayUpperBounds[0] )
				{
					bEndLoop = true;
					break;
				}
				SbxVariable* pVal = pArray->Get32( p->pArrayCurIndices );
				*(p->refVar) = *pVal;

				bool bFoundNext = false;
				for( short i = 0 ; i < nDims ; i++ )
				{
					if( p->pArrayCurIndices[i] < p->pArrayUpperBounds[i] )
					{
						bFoundNext = true;
						p->pArrayCurIndices[i]++;
						for( short j = i - 1 ; j >= 0 ; j-- )
							p->pArrayCurIndices[j] = p->pArrayLowerBounds[j];
						break;
					}
				}
				if( !bFoundNext )
				{
					delete[] p->pArrayCurIndices;
					p->pArrayCurIndices = NULL;
				}
			}
			break;
		}
		case FOR_EACH_COLLECTION:
		{
			BasicCollection* pCollection = (BasicCollection*)(SbxVariable*)pForStk->refEnd;
			SbxArrayRef xItemArray = pCollection->xItemArray;
			sal_Int32 nCount = xItemArray->Count32();
			if( pForStk->nCurCollectionIndex < nCount )
			{
				SbxVariable* pRes = xItemArray->Get32( pForStk->nCurCollectionIndex );
				pForStk->nCurCollectionIndex++;
				(*pForStk->refVar) = *pRes;
			}
			else
			{
				bEndLoop = true;
			}
			break;
		}
		case FOR_EACH_XENUMERATION:
		{
			SbiForStack* p = pForStk;
			if( p->xEnumeration->hasMoreElements() )
			{
				Any aElem = p->xEnumeration->nextElement();
				SbxVariableRef xVar = new SbxVariable( SbxVARIANT );
				unoToSbxValue( (SbxVariable*)xVar, aElem );
				(*pForStk->refVar) = *xVar;
			}
			else
			{
				bEndLoop = true;
			}
			break;
		}
	}
	if( bEndLoop )
	{
		PopFor();
		StepJUMP( nOp1 );
	}
}

// Tos+1 <= Tos+2 <= Tos, 2xremove (+Target)

void SbiRuntime::StepCASETO( sal_uInt32 nOp1 )
{
	if( !refCaseStk || !refCaseStk->Count() )
		StarBASIC::FatalError( SbERR_INTERNAL_ERROR );
	else
	{
		SbxVariableRef xTo   = PopVar();
		SbxVariableRef xFrom = PopVar();
		SbxVariableRef xCase = refCaseStk->Get( refCaseStk->Count() - 1 );
		if( *xCase >= *xFrom && *xCase <= *xTo )
			StepJUMP( nOp1 );
	}
}

// Fehler-Handler

void SbiRuntime::StepERRHDL( sal_uInt32 nOp1 )
{
	const sal_uInt8* p = pCode;
	StepJUMP( nOp1 );
	pError = pCode;
	pCode = p;
	pInst->aErrorMsg = String();
	pInst->nErr = 0;
	pInst->nErl = 0;
	nError = 0;
	SbxErrObject::getUnoErrObject()->Clear();
}

// Resume nach Fehlern (+0=statement, 1=next or Label)

void SbiRuntime::StepRESUME( sal_uInt32 nOp1 )
{
	// AB #32714 Resume ohne Error? -> Fehler
	if( !bInError )
	{
		Error( SbERR_BAD_RESUME );
		return;
	}
	if( nOp1 )
	{
		// Code-Zeiger auf naechstes Statement setzen
		sal_uInt16 n1, n2;
		pCode = pMod->FindNextStmnt( pErrCode, n1, n2, sal_True, pImg );
	}
	else
		pCode = pErrStmnt;
	if ( pError ) // current in error handler ( and got a Resume Next statment )
		SbxErrObject::getUnoErrObject()->Clear();

	if( nOp1 > 1 )
		StepJUMP( nOp1 );
	pInst->aErrorMsg = String();
	pInst->nErr = 0;
	pInst->nErl = 0;
	nError = 0;
	bInError = sal_False;

	// Error-Stack loeschen
	SbErrorStack*& rErrStack = GetSbData()->pErrStack;
	delete rErrStack;
	rErrStack = NULL;
}

// Kanal schliessen (+Kanal, 0=Alle)
void SbiRuntime::StepCLOSE( sal_uInt32 nOp1 )
{
	SbError err;
	if( !nOp1 )
		pIosys->Shutdown();
	else
	{
		err = pIosys->GetError();
		if( !err )
		{
			pIosys->Close();
		}
	}
	err = pIosys->GetError();
	Error( err );
}

// Zeichen ausgeben (+char)

void SbiRuntime::StepPRCHAR( sal_uInt32 nOp1 )
{
	ByteString s( (char) nOp1 );
	pIosys->Write( s );
	Error( pIosys->GetError() );
}

// Check, ob TOS eine bestimmte Objektklasse ist (+StringID)

bool SbiRuntime::implIsClass( SbxObject* pObj, const String& aClass )
{
	bool bRet = true;

	if( aClass.Len() != 0 )
	{
		bRet = pObj->IsClass( aClass );
		if( !bRet )
			bRet = aClass.EqualsIgnoreCaseAscii( String( RTL_CONSTASCII_USTRINGPARAM("object") ) );
		if( !bRet )
		{
			String aObjClass = pObj->GetClassName();
			SbModule* pClassMod = pCLASSFAC->FindClass( aObjClass );
			SbClassData* pClassData;
			if( pClassMod && (pClassData=pClassMod->pClassData) != NULL )
			{
				SbxVariable* pClassVar = 
					pClassData->mxIfaces->Find( aClass, SbxCLASS_DONTCARE );
				bRet = (pClassVar != NULL);
			}
		}
	}
	return bRet;
}

bool SbiRuntime::checkClass_Impl( const SbxVariableRef& refVal, 
	const String& aClass, bool bRaiseErrors, bool bDefault )
{
	bool bOk = bDefault;

	SbxDataType t = refVal->GetType();
	if( t == SbxOBJECT )
	{
		SbxObject* pObj;
		SbxVariable* pVal = (SbxVariable*)refVal;
		if( pVal->IsA( TYPE(SbxObject) ) )
			pObj = (SbxObject*) pVal;
		else
		{
			pObj = (SbxObject*) refVal->GetObject();
			if( pObj && !pObj->IsA( TYPE(SbxObject) ) )
				pObj = NULL;
		}
		if( pObj )
		{
			if( !implIsClass( pObj, aClass ) )
			{
				if ( bVBAEnabled && pObj->IsA( TYPE(SbUnoObject) ) )
				{
					SbUnoObject* pUnoObj = PTR_CAST(SbUnoObject,pObj);
					bOk = checkUnoObjectType( pUnoObj, aClass );
				}
				else
					bOk = false;
				if ( !bOk )
				{
					if( bRaiseErrors )
						Error( SbERR_INVALID_USAGE_OBJECT );
				}
			}
			else
			{
				bOk = true;

				SbClassModuleObject* pClassModuleObject = PTR_CAST(SbClassModuleObject,pObj);
				if( pClassModuleObject != NULL )
					pClassModuleObject->triggerInitializeEvent();
			}
		}
	}
	else
	{
		if ( !bVBAEnabled )
		{
			if( bRaiseErrors )
				Error( SbERR_NEEDS_OBJECT );
			bOk = false;
		}
	}
	return bOk;
}

void SbiRuntime::StepSETCLASS_impl( sal_uInt32 nOp1, bool bHandleDflt )
{
	SbxVariableRef refVal = PopVar();
	SbxVariableRef refVar = PopVar();
	String aClass( pImg->GetString( static_cast<short>( nOp1 ) ) );

	bool bOk = checkClass_Impl( refVal, aClass, true );
	if( bOk )
		StepSET_Impl( refVal, refVar, bHandleDflt ); // don't do handle dflt prop for a "proper" set
}

void SbiRuntime::StepVBASETCLASS( sal_uInt32 nOp1 )
{
	StepSETCLASS_impl( nOp1, false );
}

void SbiRuntime::StepSETCLASS( sal_uInt32 nOp1 )
{
	StepSETCLASS_impl( nOp1, true );
}

void SbiRuntime::StepTESTCLASS( sal_uInt32 nOp1 )
{
	SbxVariableRef xObjVal = PopVar();
	String aClass( pImg->GetString( static_cast<short>( nOp1 ) ) );
	bool bDefault = !bVBAEnabled;
	bool bOk = checkClass_Impl( xObjVal, aClass, false, bDefault );

	SbxVariable* pRet = new SbxVariable;
	pRet->PutBool( bOk );
	PushVar( pRet );
}

// Library fuer anschliessenden Declare-Call definieren

void SbiRuntime::StepLIB( sal_uInt32 nOp1 )
{
	aLibName = pImg->GetString( static_cast<short>( nOp1 ) );
}

// TOS wird um BASE erhoeht, BASE davor gepusht (+BASE)
// Dieser Opcode wird vor DIM/REDIM-Anweisungen gepusht,
// wenn nur ein Index angegeben wurde.

void SbiRuntime::StepBASED( sal_uInt32 nOp1 )
{
	SbxVariable* p1 = new SbxVariable;
	SbxVariableRef x2 = PopVar();

	// #109275 Check compatiblity mode
	bool bCompatible = ((nOp1 & 0x8000) != 0);
	sal_uInt16 uBase = static_cast<sal_uInt16>(nOp1 & 1);		// Can only be 0 or 1
	p1->PutInteger( uBase );
	if( !bCompatible )
		x2->Compute( SbxPLUS, *p1 );
	PushVar( x2 );	// erst die Expr
	PushVar( p1 );	// dann die Base
}