lexan.h Source File

00001 /*
00002     Copyright (C) 2001 by Christopher Nelson
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __IVARIA_LEXAN_H__
00020 #define __IVARIA_LEXAN_H__
00021 
00022 #include "iutil/databuff.h"
00023 #include "iutil/string.h"
00024 
00025 SCF_VERSION (iRegExp, 0, 0, 1);
00026 
00028 struct iRegExp : public iBase
00029 {
00031   virtual bool GetOp(unsigned index, unsigned char &op)=0;
00032 
00037   virtual bool SetOp(unsigned index, unsigned char op)=0;
00038 
00042   virtual bool Compact()=0;
00043 };
00044 
00045 
00046 SCF_VERSION (iRegExpCompiler, 0, 0, 1);
00047 
00049 struct iRegExpCompiler : public iBase
00050 {
00052   virtual bool Compile(char *regexp, iRegExp &re, unsigned int start=0, unsigned int end=0)=0;
00053 
00055   virtual unsigned int GetError()=0;
00056 };
00057 
00058 
00059 SCF_VERSION (iLexicalAnalyzer, 0, 0, 1);
00060 
00062 struct iLexicalAnalyzer : public iBase
00063 {
00065   virtual bool RegisterRegExp(unsigned int key, iRegExp &re)=0;
00066 
00068   virtual bool UnregisterRegExp(unsigned int key)=0;
00069 
00071   virtual unsigned int GetFreeKey()=0;
00072 
00074   virtual unsigned int GetError() = 0;
00075 
00077   virtual unsigned int GetMatchedKey()=0;
00078 
00080   virtual iString *GetMatchedText()=0;
00081 
00083   virtual bool PushStream(iDataBuffer &buf)=0;
00084 
00086   virtual bool PopStream()=0;
00087 
00089   virtual unsigned int Match() = 0;
00090 };
00091 
00092 #endif // __IVARIA_LEXAN_H__