freebsd-src/contrib/gcc/objc/objects.c
Peter Wemm a4cd5630b0 Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the
non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.

gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.

The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00

93 lines
2.5 KiB
C

/* GNU Objective C Runtime class related functions
Copyright (C) 1993, 1995 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 "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)
{
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
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;
}