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e869585c | 1 | /* Copyright (C) 1995,1996, 2000 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 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
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45 | \f |
46 | ||
47 | #include <stdio.h> | |
48 | #include "_scm.h" | |
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49 | #include "hashtab.h" |
50 | #include "alist.h" | |
ba11fd4c | 51 | #include "root.h" |
20e6290e | 52 | #include "weaks.h" |
0f2d19dd | 53 | |
20e6290e | 54 | #include "objprop.h" |
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55 | \f |
56 | ||
57 | /* {Object Properties} | |
58 | */ | |
59 | ||
3b3b36dd | 60 | SCM_DEFINE (scm_object_properties, "object-properties", 1, 0, 0, |
1bbd0b84 | 61 | (SCM obj), |
b380b885 MD |
62 | "@deffnx primitive procedure-properties obj\n" |
63 | "Return @var{obj}'s property list.") | |
1bbd0b84 | 64 | #define FUNC_NAME s_scm_object_properties |
0f2d19dd | 65 | { |
8ba7a00b | 66 | return scm_hashq_ref (scm_object_whash, obj, SCM_EOL); |
0f2d19dd | 67 | } |
1bbd0b84 | 68 | #undef FUNC_NAME |
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69 | |
70 | ||
3b3b36dd | 71 | SCM_DEFINE (scm_set_object_properties_x, "set-object-properties!", 2, 0, 0, |
1bbd0b84 | 72 | (SCM obj, SCM plist), |
b380b885 MD |
73 | "@deffnx primitive set-procedure-properties! obj alist\n" |
74 | "Set @var{obj}'s property list to @var{alist}.") | |
1bbd0b84 | 75 | #define FUNC_NAME s_scm_set_object_properties_x |
0f2d19dd | 76 | { |
8ba7a00b | 77 | SCM handle = scm_hashq_create_handle_x (scm_object_whash, obj, plist); |
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78 | SCM_SETCDR (handle, plist); |
79 | return plist; | |
80 | } | |
1bbd0b84 | 81 | #undef FUNC_NAME |
0f2d19dd | 82 | |
3b3b36dd | 83 | SCM_DEFINE (scm_object_property, "object-property", 2, 0, 0, |
1bbd0b84 | 84 | (SCM obj, SCM key), |
b380b885 MD |
85 | "@deffnx primitive procedure-property obj key\n" |
86 | "Return the property of @var{obj} with name @var{key}.") | |
1bbd0b84 | 87 | #define FUNC_NAME s_scm_object_property |
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88 | { |
89 | SCM assoc; | |
332ab360 | 90 | assoc = scm_assq (key, scm_object_properties (obj)); |
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91 | return (SCM_NIMP (assoc) ? SCM_CDR (assoc) : SCM_BOOL_F); |
92 | } | |
1bbd0b84 | 93 | #undef FUNC_NAME |
0f2d19dd | 94 | |
3b3b36dd | 95 | SCM_DEFINE (scm_set_object_property_x, "set-object-property!", 3, 0, 0, |
1bbd0b84 | 96 | (SCM obj, SCM key, SCM val), |
b380b885 MD |
97 | "@deffnx primitive set-procedure-property! obj key value\n" |
98 | "In @var{obj}'s property list, set the property named @var{key} to\n" | |
99 | "@var{value}.") | |
1bbd0b84 | 100 | #define FUNC_NAME s_scm_set_object_property_x |
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101 | { |
102 | SCM h; | |
103 | SCM assoc; | |
104 | h = scm_hashq_create_handle_x (scm_object_whash, obj, SCM_EOL); | |
105 | SCM_DEFER_INTS; | |
e869585c | 106 | assoc = scm_assq (key, SCM_CDR (h)); |
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107 | if (SCM_NIMP (assoc)) |
108 | SCM_SETCDR (assoc, val); | |
109 | else | |
110 | { | |
111 | assoc = scm_acons (key, val, SCM_CDR (h)); | |
112 | SCM_SETCDR (h, assoc); | |
113 | } | |
114 | SCM_ALLOW_INTS; | |
115 | return val; | |
116 | } | |
1bbd0b84 | 117 | #undef FUNC_NAME |
0f2d19dd | 118 | |
1cc91f1b | 119 | |
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120 | void |
121 | scm_init_objprop () | |
0f2d19dd | 122 | { |
8ba7a00b | 123 | scm_object_whash = scm_make_weak_key_hash_table (SCM_MAKINUM (511)); |
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124 | #include "objprop.x" |
125 | } | |
126 |