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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1241 72102866-910b-0410-8b05-ffd578937521
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Andrew McCallum 1996-03-22 00:37:53 +00:00
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commit 9e44cc662c
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/* Callbacks for the Objective-C object type. */
/* Copyright (C) 1996 Free Software Foundation, Inc. */
/* Author: Albin L. Jones <Albin.L.Jones@Dartmouth.EDU>
* Created: Sat Feb 10 15:55:51 EST 1996
* Updated: Sun Feb 11 01:42:20 EST 1996
* Serial: 96.02.11.05
*
* This file is part of the GNU Objective C Class Library.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/**** Included Headers *******************************************************/
#include <stdlib.h>
#include <Foundation/NSObject.h>
#include <Foundation/NSString.h>
#include <objects/callbacks.h>
/**** Type, Constant, and Macro Definitions **********************************/
/* FIXME: Is this right?!? */
#define _OBJECTS_NOT_AN_ID_MARKER (const void *)(-1)
const void *objects_not_an_id_marker = _OBJECTS_NOT_AN_ID_MARKER;
objects_callbacks_t objects_callbacks_for_id =
{
(objects_hash_func_t) objects_id_hash,
(objects_compare_func_t) objects_id_compare,
(objects_is_equal_func_t) objects_id_is_equal,
(objects_retain_func_t) objects_id_retain,
(objects_release_func_t) objects_id_release,
(objects_describe_func_t) objects_id_describe,
_OBJECTS_NOT_AN_ID_MARKER
};
/**** Function Implementations ***********************************************/
/* FIXME: It sure would be nice if we had a way of checking whether
* or not these objects responded to the messages we're sending them here.
* We need a way that is independent of whether we have GNUStep objects,
* NEXTSTEP objects, or GNU objects. We could certainly just use the
* same trick that the `respondsToSelector:' method itself uses, but I'd hoped
* that there was already a built-in call to do this sort of thing. */
size_t
objects_id_hash(id obj)
{
return (size_t)[obj hash];
}
int
objects_id_compare(id obj, id jbo)
{
return (int)[obj compare:jbo];
}
int
objects_id_is_equal(id obj, id jbo)
{
return (int)[obj isEqual:jbo];
}
const void *
objects_id_retain(id obj)
{
return (const void *)[obj retain];
}
void
objects_id_release(id obj)
{
[obj release];
return;
}
NSString *
objects_id_describe(id obj)
{
return [obj description];
}