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Annotation of GNUtools/cc/objc/objects.c, revision 1.1.1.1

1.1       root        1: /* GNU Objective C Runtime class related functions
                      2:    Copyright (C) 1993 Free Software Foundation, Inc.
                      3: 
                      4: Author: Kresten Krab Thorup
                      5: 
                      6: This file is part of GNU CC.
                      7: 
                      8: GNU CC is free software; you can redistribute it and/or modify it under the
                      9:    terms of the GNU General Public License as published by the Free Software
                     10:    Foundation; either version 2, or (at your option) any later version.
                     11: 
                     12: GNU CC is distributed in the hope that it will be useful, but WITHOUT ANY
                     13:    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
                     14:    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
                     15:    details.
                     16: 
                     17: You should have received a copy of the GNU General Public License along with
                     18:    GNU CC; see the file COPYING.  If not, write to the Free Software
                     19:    Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
                     20: 
                     21: /* As a special exception, if you link this library with files compiled with
                     22:    GCC to produce an executable, this does not cause the resulting executable
                     23:    to be covered by the GNU General Public License. This exception does not
                     24:    however invalidate any other reasons why the executable file might be
                     25:    covered by the GNU General Public License.  */
                     26: 
                     27: #include "../tconfig.h"         /* include defs of bzero for target */
                     28: #include "runtime.h"           /* the kitchen sink */
                     29: 
                     30: id __objc_object_alloc(Class*);
                     31: id __objc_object_dispose(id);
                     32: id __objc_object_copy(id);
                     33: 
                     34: id (*_objc_object_alloc)(Class*) = __objc_object_alloc;
                     35: id (*_objc_object_dispose)(id)    = __objc_object_dispose;
                     36: id (*_objc_object_copy)(id)       = __objc_object_copy;
                     37: 
                     38: id
                     39: class_create_instance(Class* class)
                     40: {
                     41:   id new = nil;
                     42:   if (CLS_ISCLASS(class))
                     43:     new = (*_objc_object_alloc)(class);
                     44:   if (new!=nil)
                     45:     {
                     46:       memchr (new, 0, class->instance_size);
                     47:       new->class_pointer = class;
                     48:     }
                     49:   return new;
                     50: }
                     51: 
                     52: id
                     53: object_copy(id object)
                     54: {
                     55:   if ((object!=nil)&&CLS_ISCLASS(object->class_pointer))
                     56:     return (*_objc_object_copy)(object);
                     57:   else
                     58:     return nil;
                     59: }
                     60: 
                     61: id
                     62: object_dispose(id object)
                     63: {
                     64:   if ((object!=nil)&&CLS_ISCLASS(object->class_pointer))
                     65:     {
                     66:       if (_objc_object_dispose)
                     67:         (*_objc_object_dispose)(object);
                     68:       else
                     69:         free(object);
                     70:     }
                     71:   return nil;
                     72: }
                     73: 
                     74: id __objc_object_alloc(Class* class)
                     75: {
                     76:   return (id)__objc_xmalloc(class->instance_size);
                     77: }
                     78: 
                     79: id __objc_object_dispose(id object) 
                     80: {
                     81:   free(object);
                     82:   return 0;
                     83: }
                     84: 
                     85: id __objc_object_copy(id object)
                     86: {
                     87:   id copy = class_create_instance(object->class_pointer);
                     88:   memcpy(copy, object, object->class_pointer->instance_size);
                     89:   return copy;
                     90: }
                     91: 
                     92: 

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