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#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;

};