home *** CD-ROM | disk | FTP | other *** search
- /* GNU Objective C Runtime class related functions
- Copyright (C) 1993 Free Software Foundation, Inc.
-
- Author: Kresten Krab Thorup
-
- This file is part of GNU CC.
-
- GNU CC 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, or (at your option) any later version.
-
- GNU CC 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
- GNU CC; see the file COPYING. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* As a special exception, if you link this library with files compiled with
- GCC to produce an executable, this does not cause the resulting executable
- to be covered by the GNU General Public License. This exception does not
- however invalidate any other reasons why the executable file might be
- covered by the GNU General Public License. */
-
- #include "../tconfig.h" /* include defs of bzero for target */
- #include "runtime.h" /* the kitchen sink */
-
- id __objc_object_alloc(Class*);
- id __objc_object_dispose(id);
- id __objc_object_copy(id);
-
- id (*_objc_object_alloc)(Class*) = __objc_object_alloc;
- id (*_objc_object_dispose)(id) = __objc_object_dispose;
- id (*_objc_object_copy)(id) = __objc_object_copy;
-
- id
- class_create_instance(Class* class)
- {
- id new = nil;
- if (CLS_ISCLASS(class))
- new = (*_objc_object_alloc)(class);
- if (new!=nil)
- {
- bzero (new, class->instance_size);
- new->class_pointer = class;
- }
- return new;
- }
-
- id
- object_copy(id object)
- {
- if ((object!=nil)&&CLS_ISCLASS(object->class_pointer))
- return (*_objc_object_copy)(object);
- else
- return nil;
- }
-
- id
- object_dispose(id object)
- {
- if ((object!=nil)&&CLS_ISCLASS(object->class_pointer))
- {
- if (_objc_object_dispose)
- (*_objc_object_dispose)(object);
- else
- free(object);
- }
- return nil;
- }
-
- id __objc_object_alloc(Class* class)
- {
- return (id)__objc_xmalloc(class->instance_size);
- }
-
- id __objc_object_dispose(id object)
- {
- free(object);
- return 0;
- }
-
- id __objc_object_copy(id object)
- {
- id copy = class_create_instance(object->class_pointer);
- memcpy(copy, object, object->class_pointer->instance_size);
- return copy;
- }
-
-
-