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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 | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
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. */ |
0f2d19dd JB |
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); | |
1cc91f1b | 56 | |
0f2d19dd JB |
57 | SCM |
58 | scm_object_properties (obj) | |
59 | SCM obj; | |
0f2d19dd | 60 | { |
8ba7a00b | 61 | return scm_hashq_ref (scm_object_whash, obj, SCM_EOL); |
0f2d19dd JB |
62 | } |
63 | ||
64 | ||
65 | SCM_PROC(s_set_object_properties_x, "set-object-properties!", 2, 0, 0, scm_set_object_properties_x); | |
1cc91f1b | 66 | |
0f2d19dd JB |
67 | SCM |
68 | scm_set_object_properties_x (obj, plist) | |
69 | SCM obj; | |
70 | SCM plist; | |
0f2d19dd | 71 | { |
8ba7a00b | 72 | SCM handle = scm_hashq_create_handle_x (scm_object_whash, obj, plist); |
0f2d19dd JB |
73 | SCM_SETCDR (handle, plist); |
74 | return plist; | |
75 | } | |
76 | ||
77 | SCM_PROC(s_object_property, "object-property", 2, 0, 0, scm_object_property); | |
1cc91f1b | 78 | |
0f2d19dd JB |
79 | SCM |
80 | scm_object_property (obj, key) | |
81 | SCM obj; | |
82 | SCM key; | |
0f2d19dd JB |
83 | { |
84 | SCM assoc; | |
332ab360 | 85 | assoc = scm_assq (key, scm_object_properties (obj)); |
0f2d19dd JB |
86 | return (SCM_NIMP (assoc) ? SCM_CDR (assoc) : SCM_BOOL_F); |
87 | } | |
88 | ||
89 | SCM_PROC(s_set_object_property_x, "set-object-property!", 3, 0, 0, scm_set_object_property_x); | |
1cc91f1b | 90 | |
0f2d19dd JB |
91 | SCM |
92 | scm_set_object_property_x (obj, key, val) | |
93 | SCM obj; | |
94 | SCM key; | |
95 | SCM val; | |
0f2d19dd JB |
96 | { |
97 | SCM h; | |
98 | SCM assoc; | |
99 | h = scm_hashq_create_handle_x (scm_object_whash, obj, SCM_EOL); | |
100 | SCM_DEFER_INTS; | |
101 | assoc = scm_assoc (key, SCM_CDR (h)); | |
102 | if (SCM_NIMP (assoc)) | |
103 | SCM_SETCDR (assoc, val); | |
104 | else | |
105 | { | |
106 | assoc = scm_acons (key, val, SCM_CDR (h)); | |
107 | SCM_SETCDR (h, assoc); | |
108 | } | |
109 | SCM_ALLOW_INTS; | |
110 | return val; | |
111 | } | |
112 | ||
1cc91f1b | 113 | |
0f2d19dd JB |
114 | void |
115 | scm_init_objprop () | |
0f2d19dd | 116 | { |
8ba7a00b | 117 | scm_object_whash = scm_make_weak_key_hash_table (SCM_MAKINUM (511)); |
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118 | #include "objprop.x" |
119 | } | |
120 |