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/* GNU Objective C Runtime class related functions
Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
Contributed by 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, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, 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 "objc.h"
#include "runtime.h" /* the kitchen sink */
#if OBJC_WITH_GC
# include <gc.h>
#endif
id __objc_object_alloc(Class);
id __objc_object_dispose(id);
id __objc_object_copy(id);
id (*_objc_object_alloc)(Class) = __objc_object_alloc; /* !T:SINGLE */
id (*_objc_object_dispose)(id) = __objc_object_dispose; /* !T:SINGLE */
id (*_objc_object_copy)(id) = __objc_object_copy; /* !T:SINGLE */
id
class_create_instance(Class class)
{
id new = nil;
#if OBJC_WITH_GC
if (CLS_ISCLASS(class))
new = (id)GC_malloc_explicitly_typed (class->instance_size,
class->gc_object_type);
#else
if (CLS_ISCLASS(class))
new = (*_objc_object_alloc)(class);
#endif
if (new!=nil)
{
memset (new, 0, 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
objc_free(object);
}
return nil;
}
id __objc_object_alloc(Class class)
{
return (id)objc_malloc(class->instance_size);
}
id __objc_object_dispose(id object)
{
objc_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;
}
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