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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" | |
45 | ||
46 | \f | |
47 | ||
48 | /* {Object Properties} | |
49 | */ | |
50 | ||
51 | SCM_PROC(s_object_properties, "object-properties", 1, 0, 0, scm_object_properties); | |
52 | #ifdef __STDC__ | |
53 | SCM | |
54 | scm_object_properties (SCM obj) | |
55 | #else | |
56 | SCM | |
57 | scm_object_properties (obj) | |
58 | SCM obj; | |
59 | #endif | |
60 | { | |
61 | return scm_hashq_create_handle_x (scm_object_whash, obj, SCM_EOL); | |
62 | } | |
63 | ||
64 | ||
65 | SCM_PROC(s_set_object_properties_x, "set-object-properties!", 2, 0, 0, scm_set_object_properties_x); | |
66 | #ifdef __STDC__ | |
67 | SCM | |
68 | scm_set_object_properties_x (SCM obj, SCM plist) | |
69 | #else | |
70 | SCM | |
71 | scm_set_object_properties_x (obj, plist) | |
72 | SCM obj; | |
73 | SCM plist; | |
74 | #endif | |
75 | { | |
76 | SCM handle; | |
77 | scm_hashq_create_handle_x (scm_object_whash, obj, plist); | |
78 | SCM_SETCDR (handle, plist); | |
79 | return plist; | |
80 | } | |
81 | ||
82 | SCM_PROC(s_object_property, "object-property", 2, 0, 0, scm_object_property); | |
83 | #ifdef __STDC__ | |
84 | SCM | |
85 | scm_object_property (SCM obj, SCM key) | |
86 | #else | |
87 | SCM | |
88 | scm_object_property (obj, key) | |
89 | SCM obj; | |
90 | SCM key; | |
91 | #endif | |
92 | { | |
93 | SCM assoc; | |
94 | assoc = scm_assq (key, SCM_CDR (scm_object_properties (obj))); | |
95 | return (SCM_NIMP (assoc) ? SCM_CDR (assoc) : SCM_BOOL_F); | |
96 | } | |
97 | ||
98 | SCM_PROC(s_set_object_property_x, "set-object-property!", 3, 0, 0, scm_set_object_property_x); | |
99 | #ifdef __STDC__ | |
100 | SCM | |
101 | scm_set_object_property_x (SCM obj, SCM key, SCM val) | |
102 | #else | |
103 | SCM | |
104 | scm_set_object_property_x (obj, key, val) | |
105 | SCM obj; | |
106 | SCM key; | |
107 | SCM val; | |
108 | #endif | |
109 | { | |
110 | SCM h; | |
111 | SCM assoc; | |
112 | h = scm_hashq_create_handle_x (scm_object_whash, obj, SCM_EOL); | |
113 | SCM_DEFER_INTS; | |
114 | assoc = scm_assoc (key, SCM_CDR (h)); | |
115 | if (SCM_NIMP (assoc)) | |
116 | SCM_SETCDR (assoc, val); | |
117 | else | |
118 | { | |
119 | assoc = scm_acons (key, val, SCM_CDR (h)); | |
120 | SCM_SETCDR (h, assoc); | |
121 | } | |
122 | SCM_ALLOW_INTS; | |
123 | return val; | |
124 | } | |
125 | ||
126 | #ifdef __STDC__ | |
127 | void | |
128 | scm_init_objprop (void) | |
129 | #else | |
130 | void | |
131 | scm_init_objprop () | |
132 | #endif | |
133 | { | |
134 | scm_object_whash = scm_make_weak_hash_table (SCM_MAKINUM (511)); | |
135 | #include "objprop.x" | |
136 | } | |
137 |