1 | /* GNU Objective C Runtime class related functions |
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2 | Copyright (C) 1993, 1995 Free Software Foundation, Inc. |
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3 | Contributed by Kresten Krab Thorup |
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4 | |
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5 | This file is part of GNU CC. |
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6 | |
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7 | GNU CC is free software; you can redistribute it and/or modify it under the |
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8 | terms of the GNU General Public License as published by the Free Software |
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9 | Foundation; either version 2, or (at your option) any later version. |
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10 | |
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11 | GNU CC is distributed in the hope that it will be useful, but WITHOUT ANY |
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12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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13 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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14 | details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License along with |
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17 | GNU CC; see the file COPYING. If not, write to the Free Software |
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18 | Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | /* As a special exception, if you link this library with files compiled with |
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22 | GCC to produce an executable, this does not cause the resulting executable |
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23 | to be covered by the GNU General Public License. This exception does not |
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24 | however invalidate any other reasons why the executable file might be |
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25 | covered by the GNU General Public License. */ |
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26 | |
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27 | #include "../tconfig.h" /* include defs of bzero for target */ |
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28 | #include "runtime.h" /* the kitchen sink */ |
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29 | |
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30 | id __objc_object_alloc(Class); |
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31 | id __objc_object_dispose(id); |
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32 | id __objc_object_copy(id); |
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33 | |
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34 | id (*_objc_object_alloc)(Class) = __objc_object_alloc; |
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35 | id (*_objc_object_dispose)(id) = __objc_object_dispose; |
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36 | id (*_objc_object_copy)(id) = __objc_object_copy; |
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37 | |
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38 | id |
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39 | class_create_instance(Class class) |
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40 | { |
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41 | id new = nil; |
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42 | if (CLS_ISCLASS(class)) |
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43 | new = (*_objc_object_alloc)(class); |
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44 | if (new!=nil) |
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45 | { |
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46 | memset (new, 0, class->instance_size); |
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47 | new->class_pointer = class; |
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48 | } |
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49 | return new; |
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50 | } |
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51 | |
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52 | id |
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53 | object_copy(id object) |
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54 | { |
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55 | if ((object!=nil)&&CLS_ISCLASS(object->class_pointer)) |
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56 | return (*_objc_object_copy)(object); |
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57 | else |
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58 | return nil; |
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59 | } |
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60 | |
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61 | id |
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62 | object_dispose(id object) |
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63 | { |
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64 | if ((object!=nil)&&CLS_ISCLASS(object->class_pointer)) |
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65 | { |
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66 | if (_objc_object_dispose) |
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67 | (*_objc_object_dispose)(object); |
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68 | else |
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69 | free(object); |
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70 | } |
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71 | return nil; |
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72 | } |
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73 | |
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74 | id __objc_object_alloc(Class class) |
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75 | { |
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76 | return (id)__objc_xmalloc(class->instance_size); |
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77 | } |
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78 | |
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79 | id __objc_object_dispose(id object) |
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80 | { |
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81 | free(object); |
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82 | return 0; |
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83 | } |
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84 | |
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85 | id __objc_object_copy(id object) |
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86 | { |
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87 | id copy = class_create_instance(object->class_pointer); |
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88 | memcpy(copy, object, object->class_pointer->instance_size); |
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89 | return copy; |
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90 | } |
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91 | |
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92 | |
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