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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 GNUstep Base 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 <gnustep/base/o_cbs.h> /**** Type, Constant, and Macro Definitions **********************************/ /* FIXME: Is this right?!? */ #define _OBJECTS_NOT_AN_ID_MARKER (const void *)(-1) const void *o_not_an_id_marker = _OBJECTS_NOT_AN_ID_MARKER; o_callbacks_t o_callbacks_for_id = { (o_hash_func_t) o_id_hash, (o_compare_func_t) o_id_compare, (o_is_equal_func_t) o_id_is_equal, (o_retain_func_t) o_id_retain, (o_release_func_t) o_id_release, (o_describe_func_t) o_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 o_id_hash(id obj) { return (size_t)[obj hash]; } int o_id_compare(id obj, id jbo) { return (int)[obj compare:jbo]; } int o_id_is_equal(id obj, id jbo) { return (int)[obj isEqual:jbo]; } const void * o_id_retain(id obj) { return (const void *)[obj retain]; } void o_id_release(id obj) { [obj release]; return; } NSString * o_id_describe(id obj) { return [obj description]; }
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.