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jlechner |
/* GNU Objective C Runtime class related functions
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Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
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Contributed by Kresten Krab Thorup
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2, or (at your option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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GCC; see the file COPYING. If not, write to the Free Software
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Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* As a special exception, if you link this library with files compiled with
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GCC to produce an executable, this does not cause the resulting executable
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to be covered by the GNU General Public License. This exception does not
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however invalidate any other reasons why the executable file might be
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covered by the GNU General Public License. */
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#include "tconfig.h" /* include defs of bzero for target */
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#include "objc/objc.h"
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#include "objc/runtime.h" /* the kitchen sink */
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#if OBJC_WITH_GC
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# include <gc.h>
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#endif
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id __objc_object_alloc (Class);
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id __objc_object_dispose (id);
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id __objc_object_copy (id);
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id (*_objc_object_alloc) (Class) = __objc_object_alloc; /* !T:SINGLE */
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id (*_objc_object_dispose) (id) = __objc_object_dispose; /* !T:SINGLE */
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id (*_objc_object_copy) (id) = __objc_object_copy; /* !T:SINGLE */
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id
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class_create_instance (Class class)
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{
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id new = nil;
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#if OBJC_WITH_GC
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if (CLS_ISCLASS (class))
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new = (id) GC_malloc_explicitly_typed (class->instance_size,
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class->gc_object_type);
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#else
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if (CLS_ISCLASS (class))
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new = (*_objc_object_alloc) (class);
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#endif
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if (new != nil)
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{
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memset (new, 0, class->instance_size);
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new->class_pointer = class;
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}
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return new;
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}
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id
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object_copy (id object)
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{
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if ((object != nil) && CLS_ISCLASS (object->class_pointer))
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return (*_objc_object_copy) (object);
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else
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return nil;
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}
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id
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object_dispose (id object)
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{
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if ((object != nil) && CLS_ISCLASS (object->class_pointer))
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{
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if (_objc_object_dispose)
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(*_objc_object_dispose) (object);
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else
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objc_free (object);
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}
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return nil;
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}
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id __objc_object_alloc (Class class)
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{
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return (id) objc_malloc (class->instance_size);
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}
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id __objc_object_dispose (id object)
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{
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objc_free (object);
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return 0;
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}
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id __objc_object_copy (id object)
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{
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id copy = class_create_instance (object->class_pointer);
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memcpy (copy, object, object->class_pointer->instance_size);
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return copy;
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}
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