File indexing completed on 2024-04-28 04:36:05 

0001 /*****************************************************************************
0002  * Copyright (c) 2005, 2006 Jakob Petsovits <jpetso@gmx.at>                  *
0003  *                                                                           *
0004  * This program is free software; you can redistribute it and/or             *
0005  * modify it under the terms of the GNU Library General Public               *
0006  * License as published by the Free Software Foundation; either              *
0007  * version 2 of the License, or (at your option) any later version.          *
0008  *                                                                           *
0009  * This grammar is distributed in the hope that it will be useful,           *
0010  * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
0011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
0012  * Lesser General Public License for more details.                           *
0013  *                                                                           *
0014  * You should have received a copy of the GNU Library General Public License *
0015  * along with this library; see the file COPYING.LIB.  If not, write to      *
0016  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,      *
0017  * Boston, MA 02110-1301, USA.                                               *
0018  *****************************************************************************/
0019 
0020 #include "ccparser.h"
0021 
0022 #include <iostream>
0023 
0024 #ifndef DONT_INCLUDE_FLEXLEXER
0025 #include "FlexLexer.h"
0026 #endif
0027 
0028 // The YY_USER_ACTION macro is called whenever a token is found by Flex
0029 #define YY_USER_ACTION \
0030 m_tokenBegin = m_tokenEnd; \
0031 m_tokenEnd += yyleng;
0032 
0033 
0034 namespace cc
0035 {
0036 
0037 class Lexer : public yyFlexLexer
0038 {
0039 public:
0040     Lexer( cc::Parser *parser, char *contents );
0041     void restart( cc::Parser *parser, char *contents );
0042 
0043     int yylex();
0044     char *contents()         { return m_contents;   }
0045     std::size_t tokenBegin() { return m_tokenBegin; }
0046     std::size_t tokenEnd()   { return m_tokenEnd;   }
0047 
0048 protected:
0049     // custom input, replacing the Flex default input stdin
0050     virtual int LexerInput( char *buf, int max_size );
0051 
0052     // dismisses any lexer output (which should not happen anyways)
0053     virtual void LexerOutput( const char * /*buf*/, int /*max_size*/ ) { return; }
0054     virtual void LexerError( const char */*msg*/ ) { return; }
0055 
0056 private:
0057     cc::Parser* m_parser;
0058     char *m_contents;
0059     std::size_t m_tokenBegin, m_tokenEnd;
0060     std::size_t m_currentOffset;
0061     KDevPG::LocationTable *m_locationTable;
0062 };
0063 
0064 } // end of namespace cc
0065 
0066 // kate: space-indent on; indent-width 4; tab-width 4; replace-tabs on