xref: /aoo42x/main/rsc/source/parser/rsclex.cxx (revision 79aad27f)

/**************************************************************
 *
 * 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_rsc.hxx"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>

#ifdef _RSCERROR_H
#include <rscerror.h>
#endif
#include <rschash.hxx>
#include <rscdb.hxx>
#include <rsctop.hxx>
#include <rsckey.hxx>
#include <rscpar.hxx>
#include <rscdef.hxx>

#include "rsclex.hxx"
#include <yyrscyacc.hxx>

#include <rtl/textcvt.h>
#include <rtl/textenc.h>

using namespace rtl;

const char* StringContainer::putString( const char* pString )
{
    OString aString( static_cast<const sal_Char*>(pString) );
    std::pair<
        std::hash_set< OString, OStringHash >::iterator,
        bool > aInsert =
        m_aStrings.insert( aString );

    return aInsert.first->getStr();
}

/*************************************************************************/
int 			c;
sal_Bool			bLastInclude;// War letztes Symbol INCLUDE
RscFileInst*	pFI;
RscTypCont* 	pTC;
RscExpression * pExp;
struct KeyVal {
	int 	nKeyWord;
	YYSTYPE aYYSType;
} aKeyVal[ 1 ];
sal_Bool bTargetDefined;

StringContainer* pStringContainer = NULL;


/****************** C O D E **********************************************/
sal_uInt32 GetNumber(){
	sal_uInt32	l = 0;
	sal_uInt32	nLog = 10;

	if( '0' == c ){
		c = pFI->GetFastChar();
		if( 'x' == c ){
			nLog = 16;
			c = pFI->GetFastChar();
		}
	};

	if( nLog == 16 ){
		while( isxdigit( c ) ){
			if( isdigit( c ) )
				l = l * nLog + (c - '0');
			else
				l = l * nLog + (toupper( c ) - 'A' + 10 );
			c = pFI->GetFastChar();
		}
	}
	else{
		while( isdigit( c ) || 'x' == c ){
			l = l * nLog + (c - '0');
			c = pFI->GetFastChar();
		}
	}

	while( c=='U' || c=='u' || c=='l' || c=='L' ) //Wg. Unsigned Longs
		c = pFI->GetFastChar();

	if( l > 0x7fffffff ) //Oberstes bit gegebenenfalls abschneiden;
		l &= 0x7fffffff;

	return( l );
}

int MakeToken( YYSTYPE * pTokenVal ){
	int 			c1;
	char *			pStr;

	while( sal_True ){	// Kommentare und Leerzeichen ueberlesen
		while( isspace( c ) )
			c = pFI->GetFastChar();
		if( '/' == c ){
			c1 = c;
			c = pFI->GetFastChar();
			if( '/' == c ){
				while( '\n' != c && !pFI->IsEof() )
					c = pFI->GetFastChar();
				c = pFI->GetFastChar();
			}
			else if( '*' == c ){
				c = pFI->GetFastChar();
				do {
					while( '*' != c && !pFI->IsEof() )
						c = pFI->GetFastChar();
					c = pFI->GetFastChar();
				} while( '/' != c && !pFI->IsEof() );
				c = pFI->GetFastChar();
			}
			else
				return( c1 );
		}
		else
			break;
	};

	if( c == pFI->IsEof() ){
		return( 0 );
	}

	if( bLastInclude ){
		bLastInclude = sal_False; //Zuruecksetzten
		if( '<' == c ){
            OStringBuffer aBuf( 256 );
			c = pFI->GetFastChar();
			while( '>' != c && !pFI->IsEof() )
			{
                aBuf.append( sal_Char(c) );
				c = pFI->GetFastChar();
			};
			c = pFI->GetFastChar();
			pTokenVal->string = const_cast<char*>(pStringContainer->putString( aBuf.getStr() ));
			return( INCLUDE_STRING );
		};
	}

	if( c == '"' )
	{
        OStringBuffer aBuf( 256 );
		sal_Bool bDone = sal_False;
		while( !bDone && !pFI->IsEof() && c )
		{
			c = pFI->GetFastChar();
			if( c == '"' )
			{
                do
                {
                    c = pFI->GetFastChar();
                }
                while(  c == ' ' || c == '\t' );
				if( c == '"' )
				{
                    // this is a continued string
                    // note: multiline string continuations are handled by the parser
                    // see rscyacc.y
				}
				else
					bDone = sal_True;
			}
			else if( c == '\\' )
			{
				aBuf.append( '\\' );
				c = pFI->GetFastChar();
				if( c )
                    aBuf.append( sal_Char(c) );
			}
			else
                aBuf.append( sal_Char(c) );
		}
		pStr = pTokenVal->string = const_cast<char*>(pStringContainer->putString( aBuf.getStr() ));
		return( STRING );
	}
	if (isdigit (c)){
		pTokenVal->value = GetNumber();
		return( NUMBER );
	}

	if( isalpha (c) || (c == '_') ){
		Atom		nHashId;
        OStringBuffer aBuf( 256 );

		while( isalnum (c) || (c == '_') || (c == '-') )
		{
            aBuf.append( sal_Char(c) );
			c = pFI->GetFastChar();
		}

        nHashId = pHS->getID( aBuf.getStr(), true );
        if( InvalidAtom != nHashId )
        {
            KEY_STRUCT	aKey;

            // Suche nach dem Schluesselwort
            if( pTC->aNmTb.Get( nHashId, &aKey ) )
            {

                // Schluesselwort gefunden
                switch( aKey.nTyp )
                {
                    case CLASSNAME:
                        pTokenVal->pClass = (RscTop *)aKey.yylval;
                        break;
                    case VARNAME:
                        pTokenVal->varid = aKey.nName;
                        break;
                    case CONSTNAME:
                        pTokenVal->constname.hashid = aKey.nName;
                        pTokenVal->constname.nValue = aKey.yylval;
                        break;
                    case BOOLEAN:
                        pTokenVal->svbool = (sal_Bool)aKey.yylval;
                        break;
                    case INCLUDE:
                        bLastInclude = sal_True;
                    default:
                        pTokenVal->value = aKey.yylval;
                };

                return( aKey.nTyp );
            }
            else
            {
                pTokenVal->string = const_cast<char*>(pStringContainer->putString( aBuf.getStr() ));
                return( SYMBOL );
            }
        }
        else{		// Symbol
            RscDefine  * pDef;

            pDef = pTC->aFileTab.FindDef( aBuf.getStr() );
            if( pDef ){
                pTokenVal->defineele = pDef;

                return( RSCDEFINE );
            }

            pTokenVal->string = const_cast<char*>(pStringContainer->putString( aBuf.getStr() ));
            return( SYMBOL );
        }
	}

	if( c=='<' )
	{
		c = pFI->GetFastChar();
		if( c=='<' )
		{
			c = pFI->GetFastChar();
			return LEFTSHIFT;
		}
		else
			return '<';
	}

	if( c=='>' )
	{
		c = pFI->GetFastChar();
		if( c=='>' )
		{
			c = pFI->GetFastChar();
			return RIGHTSHIFT;
		}
		else
			return '>';
	}

	c1 = c;
	c = pFI->GetFastChar();
	return( c1 );
}

#if defined( RS6000 ) || defined( HP9000 ) || defined( SCO )
extern "C" int yylex()
#else
int yylex()
#endif
{
	if( bTargetDefined )
		bTargetDefined = sal_False;
	else
		aKeyVal[ 0 ].nKeyWord =
					 MakeToken( &aKeyVal[ 0 ].aYYSType );

	yylval = aKeyVal[ 0 ].aYYSType;
	return( aKeyVal[ 0 ].nKeyWord );
}

/****************** yyerror **********************************************/
#ifdef RS6000
extern "C" void yyerror( char* pMessage )
#elif defined HP9000 || defined SCO || defined SOLARIS
extern "C" void yyerror( const char* pMessage )
#else
void yyerror( char* pMessage )
#endif
{
	pTC->pEH->Error( ERR_YACC, NULL, RscId(), pMessage );
}

/****************** parser start function ********************************/
void InitParser( RscFileInst * pFileInst )
{
	pTC = pFileInst->pTypCont;			// Datenkontainer setzten
	pFI = pFileInst;
    pStringContainer = new StringContainer();
	pExp = NULL;				//fuer MacroParser
	bTargetDefined = sal_False;

	// Anfangszeichen initialisieren
	bLastInclude = sal_False;
	c = pFI->GetFastChar();
}

void EndParser(){
	// Stack abraeumen
	while( ! S.IsEmpty() )
		S.Pop();

	// free string container
    delete pStringContainer;
    pStringContainer = NULL;

	if( pExp )
		delete pExp;
	pTC 	 = NULL;
	pFI 	 = NULL;
	pExp	 = NULL;

}

void IncludeParser( RscFileInst * pFileInst )
{
	int 		  nToken;	// Wert des Tokens
	YYSTYPE 	  aYYSType; // Daten des Tokens
	RscFile 	* pFName;	// Filestruktur
	sal_uLong		  lKey; 	// Fileschluessel
	RscTypCont	* pTypCon  = pFileInst->pTypCont;

	pFName = pTypCon->aFileTab.Get( pFileInst->GetFileIndex() );
	InitParser( pFileInst );

	nToken = MakeToken( &aYYSType );
	while( 0 != nToken && CLASSNAME != nToken ){
		if( '#' == nToken ){
			if( INCLUDE == (nToken = MakeToken( &aYYSType )) ){
				if( STRING == (nToken = MakeToken( &aYYSType )) ){
					lKey = pTypCon->aFileTab.NewIncFile( aYYSType.string,
														 aYYSType.string );
					pFName->InsertDependFile( lKey, LIST_APPEND );
				}
				else if( INCLUDE_STRING == nToken ){
					lKey = pTypCon->aFileTab.NewIncFile( aYYSType.string,
														 ByteString() );
					pFName->InsertDependFile( lKey, LIST_APPEND );
				};
			};
		};
		nToken = MakeToken( &aYYSType );
	};

	EndParser();
}

ERRTYPE parser( RscFileInst * pFileInst )
{
	ERRTYPE aError;

	InitParser( pFileInst );

	aError = yyparse();

	EndParser();

	// yyparser gibt 0 zurueck, wenn erfolgreich
	if( 0 == aError )
		aError.Clear();
	if( pFileInst->pTypCont->pEH->nErrors )
		aError = ERR_ERROR;
	pFileInst->SetError( aError );
	return( aError );
}

RscExpression * MacroParser( RscFileInst & rFileInst )
{
	ERRTYPE 	  aError;
	RscExpression * pExpression;

	InitParser( &rFileInst );

	//Ziel auf macro_expression setzen
	aKeyVal[ 0 ].nKeyWord = MACROTARGET;
	bTargetDefined = sal_True;
	aError = yyparse();

	pExpression = pExp;
	//EndParser() wuerde pExp loeschen
	if( pExp )
		pExp = NULL;

	EndParser();

	// yyparser gibt 0 zurueck, wenn erfolgreich
	if( 0 == aError )
		aError.Clear();
	if( rFileInst.pTypCont->pEH->nErrors )
		aError = ERR_ERROR;
	rFileInst.SetError( aError );

	//im Fehlerfall pExpression loeschen
	if( aError.IsError() && pExpression ){
		delete pExpression;
		pExpression = NULL;
	};
	return( pExpression );
}