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Annotation of gcc/objc/objects.c, revision 1.1.1.4

1.1       root        1: /* GNU Objective C Runtime class related functions
1.1.1.4 ! root        2:    Copyright (C) 1993, 1995 Free Software Foundation, Inc.
        !             3:    Contributed by Kresten Krab Thorup
1.1       root        4: 
                      5: This file is part of GNU CC.
                      6: 
                      7: GNU CC is free software; you can redistribute it and/or modify it under the
1.1.1.4 ! root        8: terms of the GNU General Public License as published by the Free Software
        !             9: Foundation; either version 2, or (at your option) any later version.
1.1       root       10: 
                     11: GNU CC is distributed in the hope that it will be useful, but WITHOUT ANY
1.1.1.4 ! root       12: WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
        !            13: FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
        !            14: details.
1.1       root       15: 
                     16: You should have received a copy of the GNU General Public License along with
1.1.1.4 ! root       17: GNU CC; see the file COPYING.  If not, write to the Free Software
        !            18: Foundation, 59 Temple Place - Suite 330,
        !            19: Boston, MA 02111-1307, USA.  */
1.1       root       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: 
1.1.1.2   root       27: #include "../tconfig.h"         /* include defs of bzero for target */
1.1       root       28: #include "runtime.h"           /* the kitchen sink */
                     29: 
1.1.1.4 ! root       30: id __objc_object_alloc(Class);
1.1       root       31: id __objc_object_dispose(id);
                     32: id __objc_object_copy(id);
                     33: 
1.1.1.4 ! root       34: id (*_objc_object_alloc)(Class)   = __objc_object_alloc;
1.1       root       35: id (*_objc_object_dispose)(id)    = __objc_object_dispose;
                     36: id (*_objc_object_copy)(id)       = __objc_object_copy;
                     37: 
                     38: id
1.1.1.4 ! root       39: class_create_instance(Class class)
1.1       root       40: {
                     41:   id new = nil;
                     42:   if (CLS_ISCLASS(class))
                     43:     new = (*_objc_object_alloc)(class);
                     44:   if (new!=nil)
                     45:     {
1.1.1.3   root       46:       memset (new, 0, class->instance_size);
1.1       root       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: 
1.1.1.4 ! root       74: id __objc_object_alloc(Class class)
1.1       root       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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