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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
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 | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
20e6290e JB |
45 | #include "hashtab.h" |
46 | #include "alist.h" | |
47 | #include "weaks.h" | |
0f2d19dd | 48 | |
20e6290e | 49 | #include "objprop.h" |
0f2d19dd JB |
50 | \f |
51 | ||
52 | /* {Object Properties} | |
53 | */ | |
54 | ||
55 | SCM_PROC(s_object_properties, "object-properties", 1, 0, 0, scm_object_properties); | |
56 | #ifdef __STDC__ | |
57 | SCM | |
58 | scm_object_properties (SCM obj) | |
59 | #else | |
60 | SCM | |
61 | scm_object_properties (obj) | |
62 | SCM obj; | |
63 | #endif | |
64 | { | |
8ba7a00b | 65 | return scm_hashq_ref (scm_object_whash, obj, SCM_EOL); |
0f2d19dd JB |
66 | } |
67 | ||
68 | ||
69 | SCM_PROC(s_set_object_properties_x, "set-object-properties!", 2, 0, 0, scm_set_object_properties_x); | |
70 | #ifdef __STDC__ | |
71 | SCM | |
72 | scm_set_object_properties_x (SCM obj, SCM plist) | |
73 | #else | |
74 | SCM | |
75 | scm_set_object_properties_x (obj, plist) | |
76 | SCM obj; | |
77 | SCM plist; | |
78 | #endif | |
79 | { | |
8ba7a00b | 80 | SCM handle = scm_hashq_create_handle_x (scm_object_whash, obj, plist); |
0f2d19dd JB |
81 | SCM_SETCDR (handle, plist); |
82 | return plist; | |
83 | } | |
84 | ||
85 | SCM_PROC(s_object_property, "object-property", 2, 0, 0, scm_object_property); | |
86 | #ifdef __STDC__ | |
87 | SCM | |
88 | scm_object_property (SCM obj, SCM key) | |
89 | #else | |
90 | SCM | |
91 | scm_object_property (obj, key) | |
92 | SCM obj; | |
93 | SCM key; | |
94 | #endif | |
95 | { | |
96 | SCM assoc; | |
97 | assoc = scm_assq (key, SCM_CDR (scm_object_properties (obj))); | |
98 | return (SCM_NIMP (assoc) ? SCM_CDR (assoc) : SCM_BOOL_F); | |
99 | } | |
100 | ||
101 | SCM_PROC(s_set_object_property_x, "set-object-property!", 3, 0, 0, scm_set_object_property_x); | |
102 | #ifdef __STDC__ | |
103 | SCM | |
104 | scm_set_object_property_x (SCM obj, SCM key, SCM val) | |
105 | #else | |
106 | SCM | |
107 | scm_set_object_property_x (obj, key, val) | |
108 | SCM obj; | |
109 | SCM key; | |
110 | SCM val; | |
111 | #endif | |
112 | { | |
113 | SCM h; | |
114 | SCM assoc; | |
115 | h = scm_hashq_create_handle_x (scm_object_whash, obj, SCM_EOL); | |
116 | SCM_DEFER_INTS; | |
117 | assoc = scm_assoc (key, SCM_CDR (h)); | |
118 | if (SCM_NIMP (assoc)) | |
119 | SCM_SETCDR (assoc, val); | |
120 | else | |
121 | { | |
122 | assoc = scm_acons (key, val, SCM_CDR (h)); | |
123 | SCM_SETCDR (h, assoc); | |
124 | } | |
125 | SCM_ALLOW_INTS; | |
126 | return val; | |
127 | } | |
128 | ||
129 | #ifdef __STDC__ | |
130 | void | |
131 | scm_init_objprop (void) | |
132 | #else | |
133 | void | |
134 | scm_init_objprop () | |
135 | #endif | |
136 | { | |
8ba7a00b | 137 | scm_object_whash = scm_make_weak_key_hash_table (SCM_MAKINUM (511)); |
0f2d19dd JB |
138 | #include "objprop.x" |
139 | } | |
140 |