// $Id$
// Constants

// Copyright (C) 1995 Technische Universitaet Braunschweig, Germany.
// Written by Andreas Zeller <zeller@gnu.org>.
// 
// This file is part of DDD.
// 
// DDD 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 3 of the License, or (at your option) any later version.
// 
// DDD 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 DDD -- see the file COPYING.
// If not, see <http://www.gnu.org/licenses/>.
// 
// DDD is the data display debugger.
// For details, see the DDD World-Wide-Web page, 
// `http://www.gnu.org/software/ddd/',
// or send a mail to the DDD developers <ddd@gnu.org>.

#ifndef _DDD_TrueBox_h
#define _DDD_TrueBox_h

#include "bool.h"
#include "Box.h"
#include "PrimitiveB.h"

// True
class TrueBox: public SquareBox {
public:
    DECLARE_TYPE_INFO
    TrueBox(): SquareBox(1) {}
};

// False
class FalseBox: public SquareBox {
public:
    DECLARE_TYPE_INFO
    FalseBox(): SquareBox(0) {}
};

// Zero
class NullBox: public SquareBox {
public:
    DECLARE_TYPE_INFO
    NullBox(): SquareBox(0) {}
};

#endif
