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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:34:13 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:34:13 (GMT)
commit67ad0519fd165acee4a4d2a94fa502e9e4847bd0 (patch)
tree1dbf50b3dff8d5ca7e9344733968c72704eb15ff /util/qlalr/recognizer.h
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Long live Qt!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QLALR project on Trolltech Labs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QtDebug>
+#include <QtCore/QString>
+#include <QtCore/QFile>
+#include <QtCore/QTextStream>
+
+#include "grammar_p.h"
+#include "lalr.h"
+
+#include <cstdlib>
+
+class Recognizer: protected grammar
+{
+public:
+ Recognizer (Grammar *grammar, bool no_lines);
+ ~Recognizer();
+
+ bool parse (const QString &input_file = QString ());
+
+ inline QString decls () const { return _M_decls; }
+ inline QString impls () const { return _M_impls; }
+
+protected:
+ inline void reallocateStack ();
+
+ inline QString &sym (int index)
+ { return sym_stack [tos + index - 1]; }
+
+protected: // scanner
+ int nextToken();
+
+ inline void inp ()
+ {
+ if (_M_currentChar != _M_lastChar)
+ {
+ ch = *_M_currentChar++;
+
+ if (ch == QLatin1Char('\n'))
+ ++_M_line;
+ }
+ else
+ ch = QChar();
+ }
+
+ QString expand (const QString &text) const;
+
+protected:
+ // recognizer
+ int tos;
+ int stack_size;
+ QVector<QString> sym_stack;
+ int *state_stack;
+
+ QString _M_contents;
+ QString::const_iterator _M_firstChar;
+ QString::const_iterator _M_lastChar;
+ QString::const_iterator _M_currentChar;
+
+ // scanner
+ QChar ch;
+ int _M_line;
+ int _M_action_line;
+ Grammar *_M_grammar;
+ RulePointer _M_current_rule;
+ QString _M_input_file;
+
+ QString _M_decls;
+ QString _M_impls;
+ QString _M_current_value;
+ bool _M_no_lines;
+};