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231a4ea8 | 1 | /* Copyright (C) 1995,1996, 2000, 2001, 2003 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
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17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 | 41 | |
1bbd0b84 | 42 | |
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43 | \f |
44 | ||
a0599745 MD |
45 | #include "libguile/_scm.h" |
46 | #include "libguile/hashtab.h" | |
47 | #include "libguile/alist.h" | |
48 | #include "libguile/root.h" | |
49 | #include "libguile/weaks.h" | |
0f2d19dd | 50 | |
a0599745 | 51 | #include "libguile/objprop.h" |
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52 | \f |
53 | ||
54 | /* {Object Properties} | |
55 | */ | |
56 | ||
3b3b36dd | 57 | SCM_DEFINE (scm_object_properties, "object-properties", 1, 0, 0, |
1bbd0b84 | 58 | (SCM obj), |
b380b885 | 59 | "Return @var{obj}'s property list.") |
1bbd0b84 | 60 | #define FUNC_NAME s_scm_object_properties |
0f2d19dd | 61 | { |
8ba7a00b | 62 | return scm_hashq_ref (scm_object_whash, obj, SCM_EOL); |
0f2d19dd | 63 | } |
1bbd0b84 | 64 | #undef FUNC_NAME |
0f2d19dd JB |
65 | |
66 | ||
3b3b36dd | 67 | SCM_DEFINE (scm_set_object_properties_x, "set-object-properties!", 2, 0, 0, |
1e6808ea | 68 | (SCM obj, SCM alist), |
b380b885 | 69 | "Set @var{obj}'s property list to @var{alist}.") |
1bbd0b84 | 70 | #define FUNC_NAME s_scm_set_object_properties_x |
0f2d19dd | 71 | { |
1e6808ea MG |
72 | SCM handle = scm_hashq_create_handle_x (scm_object_whash, obj, alist); |
73 | SCM_SETCDR (handle, alist); | |
74 | return alist; | |
0f2d19dd | 75 | } |
1bbd0b84 | 76 | #undef FUNC_NAME |
0f2d19dd | 77 | |
3b3b36dd | 78 | SCM_DEFINE (scm_object_property, "object-property", 2, 0, 0, |
1bbd0b84 | 79 | (SCM obj, SCM key), |
b380b885 | 80 | "Return the property of @var{obj} with name @var{key}.") |
1bbd0b84 | 81 | #define FUNC_NAME s_scm_object_property |
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82 | { |
83 | SCM assoc; | |
332ab360 | 84 | assoc = scm_assq (key, scm_object_properties (obj)); |
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85 | return (SCM_NIMP (assoc) ? SCM_CDR (assoc) : SCM_BOOL_F); |
86 | } | |
1bbd0b84 | 87 | #undef FUNC_NAME |
0f2d19dd | 88 | |
3b3b36dd | 89 | SCM_DEFINE (scm_set_object_property_x, "set-object-property!", 3, 0, 0, |
1e6808ea | 90 | (SCM obj, SCM key, SCM value), |
1e6808ea MG |
91 | "In @var{obj}'s property list, set the property named @var{key}\n" |
92 | "to @var{value}.") | |
1bbd0b84 | 93 | #define FUNC_NAME s_scm_set_object_property_x |
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94 | { |
95 | SCM h; | |
96 | SCM assoc; | |
97 | h = scm_hashq_create_handle_x (scm_object_whash, obj, SCM_EOL); | |
98 | SCM_DEFER_INTS; | |
e869585c | 99 | assoc = scm_assq (key, SCM_CDR (h)); |
0f2d19dd | 100 | if (SCM_NIMP (assoc)) |
1e6808ea | 101 | SCM_SETCDR (assoc, value); |
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102 | else |
103 | { | |
1e6808ea | 104 | assoc = scm_acons (key, value, SCM_CDR (h)); |
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105 | SCM_SETCDR (h, assoc); |
106 | } | |
107 | SCM_ALLOW_INTS; | |
1e6808ea | 108 | return value; |
0f2d19dd | 109 | } |
1bbd0b84 | 110 | #undef FUNC_NAME |
0f2d19dd | 111 | |
1cc91f1b | 112 | |
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113 | void |
114 | scm_init_objprop () | |
0f2d19dd | 115 | { |
231a4ea8 | 116 | scm_object_whash = scm_make_weak_key_hash_table (SCM_UNDEFINED); |
a0599745 | 117 | #include "libguile/objprop.x" |
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118 | } |
119 | ||
89e00824 ML |
120 | |
121 | /* | |
122 | Local Variables: | |
123 | c-file-style: "gnu" | |
124 | End: | |
125 | */ |