/* * Copyright (c) 2002-2003 Jesper K. Pedersen <blackie@kde.org> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License version 2 as published by the Free Software Foundation. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. **/ #ifndef REGEXP_H #define REGEXP_H #include <tqdom.h> #include <tqptrlist.h> class CompoundRegExp; class ErrorMap; /** Abstract syntax tree for regular expressions. @internal */ class RegExp { public: RegExp( bool selected ); virtual ~RegExp(); virtual int precedence() const = 0; virtual TQDomNode toXml( TQDomDocument* doc ) const = 0; virtual bool load( TQDomElement, const TQString& version ) = 0; TQString toXmlString() const; void check( ErrorMap& ); virtual bool check( ErrorMap&, bool first, bool last ) = 0; void addChild( RegExp* child ); void removeChild( RegExp* child ); void setParent( RegExp* parent ); RegExp* clone() const; virtual bool operator==( const RegExp& other ) const { return ( type() == other.type() ); } enum RegExpType { CONC, TEXT, DOT, POSITION, REPEAT, ALTN, COMPOUND, LOOKAHEAD, TEXTRANGE }; virtual RegExpType type() const = 0; virtual void replacePart( CompoundRegExp* /* replacement */ ) {} bool isSelected() const { return _selected; } void setSelected( bool b ) { _selected = b; } protected: RegExp* readRegExp( TQDomElement top, const TQString& version ); private: RegExp() {} // disable TQPtrList<RegExp> _children; RegExp* _parent; bool _destructing; bool _selected; }; typedef TQPtrList<RegExp> RegExpList; typedef TQPtrListIterator<RegExp> RegExpListIt; #endif // REGEXP_H