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106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/* 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 GNU CC.
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GNU CC 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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GNU CC 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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GNU CC; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, 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.h"
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#include "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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