--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/lexgen/re2nfa.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the utils of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef RE2NFA_H
+#define RE2NFA_H
+
+#include "nfa.h"
+#include <QSet>
+
+class RE2NFA
+{
+public:
+    RE2NFA(const QMap<QString, NFA> &macros, const QSet<InputType> &maxInputSet, Qt::CaseSensitivity cs);
+
+    NFA parse(const QString &expression, int *errorColumn = 0);
+
+private:
+    NFA parseExpr();
+    NFA parseBranch();
+    NFA parsePiece();
+    NFA parseAtom();
+    NFA parseMaybeQuantifier(const NFA &nfa);
+    NFA parseSet();
+    NFA parseSet2();
+
+    NFA createCharNFA();
+
+private:
+    friend class RegExpTokenizer;
+
+    enum Token {
+        TOK_INVALID,
+        TOK_STRING,
+        TOK_LBRACE,   // {
+        TOK_RBRACE,   // }
+        TOK_LBRACKET, // [
+        TOK_RBRACKET, // ]
+        TOK_LPAREN,   // (
+        TOK_RPAREN,   // )
+        TOK_COMMA,
+        TOK_STAR,
+        TOK_OR,
+        TOK_QUESTION,
+        TOK_DOT,
+        TOK_PLUS,
+        TOK_SEQUENCE,
+        TOK_QUOTED_STRING
+    };
+
+    struct Symbol
+    {
+        inline Symbol() : token(TOK_INVALID), column(-1) {}
+        inline Symbol(Token t, const QString &l = QString()) : token(t), lexem(l), column(-1) {}
+        Token token;
+        QString lexem;
+        int column;
+    };
+
+    inline bool hasNext() const { return index < symbols.count(); }
+    inline Token next() { return symbols.at(index++).token; }
+    bool next(Token t);
+    bool test(Token t);
+    inline void prev() { index--; }
+    inline const Symbol &symbol() const { return symbols.at(index - 1); }
+    QString lexemUntil(Token t);
+
+    void tokenize(const QString &input);
+
+    QMap<QString, NFA> macros;
+    QVector<Symbol> symbols;
+    int index;
+    int errorColumn;
+    const QSet<InputType> maxInputSet;
+    Qt::CaseSensitivity caseSensitivity;
+};
+
+#endif // RE2NFA_H
+