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diff --git a/kregexpeditor/regexpconverter.h b/kregexpeditor/regexpconverter.h
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+++ b/kregexpeditor/regexpconverter.h
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+/*
+ *  Copyright (c) 2002-2004 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 REGEXPCONVERTER_H
+#define REGEXPCONVERTER_H
+
+#include <qstring.h>
+#include <qvaluelist.h>
+
+class QTextEdit;
+class AltnRegExp;
+class ConcRegExp;
+class LookAheadRegExp;
+class TextRangeRegExp;
+class CompoundRegExp;
+class DotRegExp;
+class PositionRegExp;
+class RepeatRegExp;
+class TextRegExp;
+class RegexpHighlighter;
+class RegExp;
+
+class RegExpConverter
+{
+public:
+    enum Features {
+        WordBoundary = 0x01,
+        NonWordBoundary = 0x02,
+        WordStart = 0x04,
+        WordEnd = 0x08,
+        PosLookAhead = 0x10,
+        NegLookAhead = 0x20,
+        CharacterRangeNonItems = 0x40,
+        ExtRange = 0x80
+    };
+
+    virtual bool canParse() = 0;
+    virtual QString name() = 0;
+    virtual int features() = 0;
+    virtual RegExp* parse( const QString&, bool* ok );
+    QString toStr( RegExp*, bool markSelection );
+    virtual RegexpHighlighter* highlighter( QTextEdit* );
+
+    static void setCurrent( RegExpConverter* );
+    static RegExpConverter* current();
+
+protected:
+    virtual QString toString( AltnRegExp*, bool markSelection ) = 0;
+    virtual QString toString( ConcRegExp*, bool markSelection ) = 0;
+    virtual QString toString( LookAheadRegExp*, bool markSelection ) = 0;
+    virtual QString toString( TextRangeRegExp*, bool markSelection ) = 0;
+    virtual QString toString( CompoundRegExp*, bool markSelection ) = 0;
+    virtual QString toString( DotRegExp*, bool markSelection ) = 0;
+    virtual QString toString( PositionRegExp*, bool markSelection ) = 0;
+    virtual QString toString( RepeatRegExp*, bool markSelection ) = 0;
+    virtual QString toString( TextRegExp*, bool markSelection ) = 0;
+    QString escape( QString text, QValueList<QChar> chars, QChar escapeChar) const;
+
+private:
+    static RegExpConverter* _current;
+};
+
+#endif /* REGEXPCONVERTER_H */
+