/****************************************************************************+
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**+
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** Copyright (C) 2009 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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+
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#include <QtCore/QtDebug>+
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#include <QtCore/QString>+
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#include <QtCore/QFile>+
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#include <QtCore/QTextStream>+
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+
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#include "grammar_p.h"+
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#include "lalr.h"+
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+
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#include <cstdlib>+
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+
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class Recognizer: protected grammar+
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{+
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public:+
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  Recognizer (Grammar *grammar, bool no_lines);+
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  ~Recognizer();+
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+
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  bool parse (const QString &input_file = QString ());+
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+
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  inline QString decls () const { return _M_decls; }+
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  inline QString impls () const { return _M_impls; }+
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+
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protected:+
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  inline void reallocateStack ();+
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+
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  inline QString &sym (int index)+
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  { return sym_stack [tos + index - 1]; }+
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+
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protected: // scanner+
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  int nextToken();+
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+
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  inline void inp ()+
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  {+
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    if (_M_currentChar != _M_lastChar)+
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      {+
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	ch = *_M_currentChar++;+
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	+
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	if (ch == QLatin1Char('\n'))+
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	  ++_M_line;+
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      }+
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    else+
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      ch = QChar();+
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  }+
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+
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  QString expand (const QString &text) const;+
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+
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protected:+
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  // recognizer+
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  int tos;+
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  int stack_size;+
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  QVector<QString> sym_stack;+
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  int *state_stack;+
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+
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  QString _M_contents;+
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  QString::const_iterator _M_firstChar;+
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  QString::const_iterator _M_lastChar;+
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  QString::const_iterator _M_currentChar;+
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+
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  // scanner+
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  QChar ch;+
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  int _M_line;+
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  int _M_action_line;+
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  Grammar *_M_grammar;+
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  RulePointer _M_current_rule;+
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  QString _M_input_file;+
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+
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  QString _M_decls;+
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  QString _M_impls;+
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  QString _M_current_value;+
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  bool _M_no_lines;+
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};+
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