/*
 * Copyright (C) 2004  Stefan Kleine Stegemann
 *
 * This program 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
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#import <Foundation/Foundation.h>

/**
 * A ref-counting wrapper for abritrary pointers. When
 * the wrapper receives the dealloc message, the associated
 * pointer will be free'd using the CountingRef's delegate.
 * 
 * A CountingRef retains it's delegate and sends it
 * a release message when the CountingRef receives a
 * dealloc message.
 */
@interface CountingRef : NSObject
{
   void*  ptr;
   id     delegate;
}

- (id) initWithPtr: (void*)aPtr delegate: (id)aDelegate;

- (void*) ptr;
- (BOOL) isNULL;

@end


/**
 * Delegate for CountingRef's.
 */
@interface NSObject (CountingRefDelegate)
- (void) freePtrForReference: (CountingRef*)aReference;
@end