00001 /*************************************************************************** 00002 ** 00003 ** This file is part of QGpCoreTools. 00004 ** 00005 ** This library is free software; you can redistribute it and/or 00006 ** modify it under the terms of the GNU Lesser General Public 00007 ** License as published by the Free Software Foundation; either 00008 ** version 2.1 of the License, or (at your option) any later version. 00009 ** 00010 ** This file is distributed in the hope that it will be useful, but WITHOUT 00011 ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 00013 ** License for more details. 00014 ** 00015 ** You should have received a copy of the GNU Lesser General Public 00016 ** License along with this library; if not, write to the Free Software 00017 ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00018 ** 00019 ** See http://www.geopsy.org for more information. 00020 ** 00021 ** Created : 2007-04-10 00022 ** Authors : 00023 ** Marc Wathelet 00024 ** Marc Wathelet (LGIT, Grenoble, France) 00025 ** 00026 ***************************************************************************/ 00027 00028 #ifndef EXPRESSIONPARSER_H 00029 #define EXPRESSIONPARSER_H 00030 00031 00032 #include "QGpCoreToolsDLLExport.h" 00033 #include "ExpressionActions.h" 00034 #include "ExpressionAction.h" 00035 #include "Translations.h" 00036 00037 namespace QGpCoreTools { 00038 00039 class QGPCORETOOLS_EXPORT ExpressionParser 00040 { 00041 TRANSLATIONS( "ExpressionParser" ); 00042 public: 00043 ExpressionActions parse(QString code, ExpressionContext * context); 00044 private: 00045 bool parse(ExpressionAction * parent, ExpressionContext * context); 00046 enum ArgumentType {NoArgument, Numeric, AlphaNumeric, String}; 00047 bool skipArgument(ArgumentType& type); 00048 bool skipOperator(ExpressionAction::Type& type); 00049 bool skipString(); 00050 void skipBlanks(); 00051 void skipLineComment(); 00052 void skipMultiLineComment(); 00053 bool badCharacterError(); 00054 QString bufferLocation(); 00055 private: 00056 const QChar * _ptr; 00057 int _row; 00058 const QChar * _beginRowPtr; 00059 QString _lastString; 00060 }; 00061 00062 } // namespace QGpCoreTools 00063 00064 #endif // EXPRESSIONPARSER_H
