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ParserBase.h

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00001 #ifndef PARSER_BASE_H 00002 #define PARSER_BASE_H 00003 00004 /* 00005 * Base class for parsers 00006 * 00007 * Copyright (C) 2003 Enrico Zini <enrico@debian.org> 00008 * 00009 * This library is free software; you can redistribute it and/or 00010 * modify it under the terms of the GNU Lesser General Public 00011 * License as published by the Free Software Foundation; either 00012 * version 2.1 of the License, or (at your option) any later version. 00013 * 00014 * This library is distributed in the hope that it will be useful, 00015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 * Lesser General Public License for more details. 00018 * 00019 * You should have received a copy of the GNU Lesser General Public 00020 * License along with this library; if not, write to the Free Software 00021 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00022 */ 00023 00024 #pragma interface 00025 00026 #include <string> 00027 #include <tagcoll/Exception.h> 00028 00029 class ParserInput; 00030 00031 class ParserException: public ContextException 00032 { 00033 protected: 00034 std::string _file; 00035 int _line; 00036 00037 public: 00038 ParserException(const ParserInput& input, const std::string& message) throw (); 00039 ParserException(const std::string& file, int line, const std::string& message) throw () 00040 : ContextException(message), _file(file), _line(line) {} 00041 ParserException(int line, const std::string& message) throw () 00042 : ContextException(message), _line(line) {} 00043 ParserException(const std::string& message) throw () 00044 : ContextException(message), _line(-1) {} 00045 ~ParserException() throw () {} 00046 00047 int line() const throw () { return _line; } 00048 int line(int line) throw () { return _line = line; } 00049 00050 const std::string& file() const throw () { return _file; } 00051 std::string file() throw () { return _file; } 00052 std::string file(const std::string file) throw () { return _file = file; } 00053 00054 virtual const char* type() const throw () 00055 { 00056 return "ParserException"; 00057 } 00058 00059 virtual std::string desc() const throw (); 00060 }; 00061 00062 class ParserInputException : public ParserException 00063 { 00064 public: 00065 ParserInputException(const ParserInput& input, const std::string& message) throw () 00066 : ParserException(input, message) {} 00067 00068 virtual const char* type() const throw () 00069 { 00070 return "ParserInputException"; 00071 } 00072 00073 }; 00074 00075 class ParserInput 00076 { 00077 public: 00078 static const int Eof = -1; 00079 00080 virtual const std::string& fileName() const throw () = 0; 00081 virtual int lineNumber() const throw () = 0; 00082 virtual int nextChar() throw (ParserInputException) = 0; 00083 virtual void pushChar(int c) throw (ParserInputException) = 0; 00084 }; 00085 00086 // vim:set ts=4 sw=4: 00087 #endif

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