/*
    Copyright (c) 1998, 1999, 2000, 2001, 2003, 2004 Benhur Stein
    
    This file is part of Pajé.

    Pajé is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License as published by the
    Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    Pajé 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 Lesser General Public License
    for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with Pajé; if not, write to the Free Software Foundation, Inc.,
    59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _Macros_h_
#define _Macros_h_

//
// Macros.h
//
// some useful macros
//

#define Assign(variable, value)            \
    do {                                         \
        id newvalue = (value);                   \
        if (variable != newvalue) {              \
            if (variable) [variable release];    \
            variable = newvalue;                 \
            if (variable) [variable retain];     \
        }                                        \
    } while (0)

#endif