/*

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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.

*/

#if !defined (octave_tree_jump_h)
#define octave_tree_jump_h 1

#if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION)
#pragma interface
#endif

class tree_walker;

#include "pt-cmd.h"

// Break.

class
tree_break_command : public tree_command
{
public:

  tree_break_command (int l = -1, int c = -1)
    : tree_command (l, c) { }

  ~tree_break_command (void) { }

  void eval (void);

  void accept (tree_walker& tw);

  static int breaking;

private:

  // No copying!

  tree_break_command (const tree_break_command&);

  tree_break_command& operator = (const tree_break_command&);
};

// Continue.

class
tree_continue_command : public tree_command
{
public:

  tree_continue_command (int l = -1, int c = -1)
    : tree_command (l, c) { }

  ~tree_continue_command (void) { }

  void eval (void);

  void accept (tree_walker& tw);

  static int continuing;

private:

  // No copying!

  tree_continue_command (const tree_continue_command&);

  tree_continue_command& operator = (const tree_continue_command&);
};

// Return.

class
tree_return_command : public tree_command
{
public:

  tree_return_command (int l = -1, int c = -1)
    : tree_command (l, c) { }

  ~tree_return_command (void) { }

  void eval (void);

  void accept (tree_walker& tw);

  static int returning;

private:

  // No copying!

  tree_return_command (const tree_return_command&);

  tree_return_command& operator = (const tree_return_command&);
};

#endif

/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
