38be0d1383
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the utils of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef RE2NFA_H
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#define RE2NFA_H
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#include "nfa.h"
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#include <QSet>
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class RE2NFA
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{
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public:
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RE2NFA(const QMap<QString, NFA> ¯os, const QSet<InputType> &maxInputSet, Qt::CaseSensitivity cs);
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NFA parse(const QString &expression, int *errorColumn = 0);
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private:
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NFA parseExpr();
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NFA parseBranch();
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NFA parsePiece();
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NFA parseAtom();
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NFA parseMaybeQuantifier(const NFA &nfa);
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NFA parseSet();
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NFA parseSet2();
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NFA createCharNFA();
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private:
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friend class RegExpTokenizer;
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enum Token {
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TOK_INVALID,
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TOK_STRING,
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TOK_LBRACE, // {
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TOK_RBRACE, // }
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TOK_LBRACKET, // [
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TOK_RBRACKET, // ]
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TOK_LPAREN, // (
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TOK_RPAREN, // )
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TOK_COMMA,
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TOK_STAR,
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TOK_OR,
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TOK_QUESTION,
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TOK_DOT,
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TOK_PLUS,
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TOK_SEQUENCE,
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TOK_QUOTED_STRING
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};
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struct Symbol
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{
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inline Symbol() : token(TOK_INVALID), column(-1) {}
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inline Symbol(Token t, const QString &l = QString()) : token(t), lexem(l), column(-1) {}
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Token token;
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QString lexem;
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int column;
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};
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inline bool hasNext() const { return index < symbols.count(); }
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inline Token next() { return symbols.at(index++).token; }
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bool next(Token t);
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bool test(Token t);
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inline void prev() { index--; }
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inline const Symbol &symbol() const { return symbols.at(index - 1); }
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QString lexemUntil(Token t);
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void tokenize(const QString &input);
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QMap<QString, NFA> macros;
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QVector<Symbol> symbols;
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int index;
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int errorColumn;
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const QSet<InputType> maxInputSet;
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Qt::CaseSensitivity caseSensitivity;
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};
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#endif // RE2NFA_H
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