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- /*
-
- Copyright (C) 1996 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_base_h)
- #define octave_tree_base_h 1
-
- #if defined (__GNUG__)
- #pragma interface
- #endif
-
- 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 int line (void) const
- { return line_num; }
-
- virtual int column (void) const
- { return column_num; }
-
- virtual void accept (tree_walker& tw) = 0;
-
- 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;
- };
-
- #endif
-
- /*
- ;;; Local Variables: ***
- ;;; mode: C++ ***
- ;;; End: ***
- */
-