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octave-2.1.23
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pt.h
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2000-01-15
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/*
Copyright (C) 1996, 1997 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined (octave_tree_h)
#define octave_tree_h 1
#if defined (__GNUG__)
#pragma interface
#endif
#include <string>
class ostream;
class tree_walker;
// Base class for the parse tree.
class
tree
{
public:
tree (int l = -1, int c = -1)
{
line_num = l;
column_num = c;
}
virtual ~tree (void) { }
virtual int line (void) const
{ return line_num; }
virtual int column (void) const
{ return column_num; }
virtual void accept (tree_walker& tw) = 0;
string str_print_code (void);
private:
// The input line and column where we found the text that was
// eventually converted to this tree node.
int line_num;
int column_num;
// No copying!
tree (const tree&);
tree& operator = (const tree&);
};
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/