Commit | Line | Data |
---|---|---|
f2ed4473 | 1 | /* Copyright (C) 1995,1996,1998,2000,2001,2003,2004, 2006, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
3fc7e2c1 AW |
25 | #define SCM_BUILDING_DEPRECATED_CODE |
26 | ||
a0599745 MD |
27 | #include "libguile/_scm.h" |
28 | ||
29 | #include "libguile/alist.h" | |
3fc7e2c1 AW |
30 | #include "libguile/deprecation.h" |
31 | #include "libguile/deprecated.h" | |
a0599745 MD |
32 | #include "libguile/eval.h" |
33 | #include "libguile/procs.h" | |
34 | #include "libguile/gsubr.h" | |
5540e847 | 35 | #include "libguile/smob.h" |
a0599745 MD |
36 | #include "libguile/root.h" |
37 | #include "libguile/vectors.h" | |
82c76fd3 | 38 | #include "libguile/hashtab.h" |
2fb924f6 | 39 | #include "libguile/programs.h" |
a0599745 MD |
40 | |
41 | #include "libguile/validate.h" | |
42 | #include "libguile/procprop.h" | |
0f2d19dd JB |
43 | \f |
44 | ||
c083a529 | 45 | SCM_GLOBAL_SYMBOL (scm_sym_system_procedure, "system-procedure"); |
3fc7e2c1 | 46 | #if (SCM_ENABLE_DEPRECATED == 1) |
67e60655 | 47 | SCM_GLOBAL_SYMBOL (scm_sym_arity, "arity"); |
3fc7e2c1 | 48 | #endif |
fd12a19a | 49 | SCM_GLOBAL_SYMBOL (scm_sym_name, "name"); |
67e60655 | 50 | |
e1bdf9e2 AW |
51 | static SCM overrides; |
52 | static scm_i_pthread_mutex_t overrides_lock = SCM_I_PTHREAD_MUTEX_INITIALIZER; | |
56164a5a | 53 | |
f3cf9421 AW |
54 | static SCM arity_overrides; |
55 | ||
314b8716 AW |
56 | int |
57 | scm_i_procedure_arity (SCM proc, int *req, int *opt, int *rest) | |
67e60655 | 58 | { |
f3cf9421 AW |
59 | SCM o; |
60 | ||
61 | scm_i_pthread_mutex_lock (&overrides_lock); | |
62 | o = scm_hashq_ref (arity_overrides, proc, SCM_BOOL_F); | |
63 | scm_i_pthread_mutex_unlock (&overrides_lock); | |
64 | ||
65 | if (scm_is_true (o)) | |
66 | { | |
67 | *req = scm_to_int (scm_car (o)); | |
68 | *opt = scm_to_int (scm_cadr (o)); | |
69 | *rest = scm_is_true (scm_caddr (o)); | |
70 | return 1; | |
71 | } | |
72 | ||
75c3ed28 | 73 | while (!SCM_PROGRAM_P (proc)) |
67e60655 | 74 | { |
75c3ed28 | 75 | if (SCM_IMP (proc)) |
314b8716 | 76 | return 0; |
75c3ed28 AW |
77 | switch (SCM_TYP7 (proc)) |
78 | { | |
79 | case scm_tc7_smob: | |
80 | if (!SCM_SMOB_APPLICABLE_P (proc)) | |
81 | return 0; | |
82 | proc = scm_i_smob_apply_trampoline (proc); | |
83 | break; | |
84 | case scm_tcs_struct: | |
85 | if (!SCM_STRUCT_APPLICABLE_P (proc)) | |
86 | return 0; | |
87 | proc = SCM_STRUCT_PROCEDURE (proc); | |
88 | break; | |
89 | default: | |
90 | return 0; | |
91 | } | |
67e60655 | 92 | } |
f3cf9421 | 93 | |
75c3ed28 | 94 | return scm_i_program_arity (proc, req, opt, rest); |
67e60655 MD |
95 | } |
96 | ||
f3cf9421 AW |
97 | SCM_DEFINE (scm_set_procedure_minimum_arity_x, "set-procedure-minimum-arity!", |
98 | 4, 0, 0, (SCM proc, SCM req, SCM opt, SCM rest), | |
99 | "") | |
100 | #define FUNC_NAME s_scm_set_procedure_minimum_arity_x | |
101 | { | |
102 | int t SCM_UNUSED; | |
103 | ||
104 | SCM_VALIDATE_PROC (1, proc); | |
105 | SCM_VALIDATE_INT_COPY (2, req, t); | |
106 | SCM_VALIDATE_INT_COPY (3, opt, t); | |
107 | SCM_VALIDATE_BOOL (4, rest); | |
108 | ||
109 | scm_i_pthread_mutex_lock (&overrides_lock); | |
110 | scm_hashq_set_x (arity_overrides, proc, scm_list_3 (req, opt, rest)); | |
111 | scm_i_pthread_mutex_unlock (&overrides_lock); | |
112 | return SCM_UNDEFINED; | |
113 | } | |
114 | #undef FUNC_NAME | |
115 | ||
cb2ce548 AW |
116 | SCM_DEFINE (scm_procedure_minimum_arity, "procedure-minimum-arity", 1, 0, 0, |
117 | (SCM proc), | |
118 | "Return the \"minimum arity\" of a procedure.\n\n" | |
119 | "If the procedure has only one arity, that arity is returned\n" | |
120 | "as a list of three values: the number of required arguments,\n" | |
121 | "the number of optional arguments, and a boolean indicating\n" | |
122 | "whether or not the procedure takes rest arguments.\n\n" | |
123 | "For a case-lambda procedure, the arity returned is the one\n" | |
124 | "with the lowest minimum number of arguments, and the highest\n" | |
125 | "maximum number of arguments.\n\n" | |
126 | "If it was not possible to determine the arity of the procedure,\n" | |
127 | "@code{#f} is returned.") | |
128 | #define FUNC_NAME s_scm_procedure_minimum_arity | |
129 | { | |
130 | int req, opt, rest; | |
131 | ||
132 | if (scm_i_procedure_arity (proc, &req, &opt, &rest)) | |
133 | return scm_list_3 (scm_from_int (req), | |
134 | scm_from_int (opt), | |
135 | scm_from_bool (rest)); | |
136 | else | |
137 | return SCM_BOOL_F; | |
138 | } | |
139 | #undef FUNC_NAME | |
140 | ||
3b3b36dd | 141 | SCM_DEFINE (scm_procedure_properties, "procedure-properties", 1, 0, 0, |
1bbd0b84 | 142 | (SCM proc), |
b380b885 | 143 | "Return @var{obj}'s property list.") |
1bbd0b84 | 144 | #define FUNC_NAME s_scm_procedure_properties |
0f2d19dd | 145 | { |
314b8716 | 146 | SCM ret; |
56164a5a | 147 | |
34d19ef6 | 148 | SCM_VALIDATE_PROC (1, proc); |
314b8716 | 149 | |
e1bdf9e2 AW |
150 | scm_i_pthread_mutex_lock (&overrides_lock); |
151 | ret = scm_hashq_ref (overrides, proc, SCM_BOOL_F); | |
152 | scm_i_pthread_mutex_unlock (&overrides_lock); | |
314b8716 | 153 | |
e1bdf9e2 AW |
154 | if (scm_is_false (ret)) |
155 | { | |
156 | if (SCM_PROGRAM_P (proc)) | |
07e424b7 | 157 | ret = scm_i_program_properties (proc); |
e1bdf9e2 AW |
158 | else |
159 | ret = SCM_EOL; | |
160 | } | |
161 | ||
3fc7e2c1 AW |
162 | #if (SCM_ENABLE_DEPRECATED == 1) |
163 | ret = scm_acons (scm_sym_arity, scm_procedure_minimum_arity (proc), ret); | |
164 | #endif | |
314b8716 | 165 | |
3fc7e2c1 | 166 | return ret; |
0f2d19dd | 167 | } |
1bbd0b84 | 168 | #undef FUNC_NAME |
0f2d19dd | 169 | |
3b3b36dd | 170 | SCM_DEFINE (scm_set_procedure_properties_x, "set-procedure-properties!", 2, 0, 0, |
56164a5a AW |
171 | (SCM proc, SCM alist), |
172 | "Set @var{proc}'s property list to @var{alist}.") | |
1bbd0b84 | 173 | #define FUNC_NAME s_scm_set_procedure_properties_x |
0f2d19dd | 174 | { |
56164a5a AW |
175 | SCM_VALIDATE_PROC (1, proc); |
176 | ||
3fc7e2c1 | 177 | #if (SCM_ENABLE_DEPRECATED == 1) |
e1bdf9e2 AW |
178 | if (scm_assq (alist, scm_sym_arity)) |
179 | SCM_MISC_ERROR ("arity is a read-only property", SCM_EOL); | |
3fc7e2c1 | 180 | #endif |
e1bdf9e2 AW |
181 | |
182 | scm_i_pthread_mutex_lock (&overrides_lock); | |
183 | scm_hashq_set_x (overrides, proc, alist); | |
184 | scm_i_pthread_mutex_unlock (&overrides_lock); | |
314b8716 | 185 | |
0f2d19dd JB |
186 | return SCM_UNSPECIFIED; |
187 | } | |
1bbd0b84 | 188 | #undef FUNC_NAME |
0f2d19dd | 189 | |
3b3b36dd | 190 | SCM_DEFINE (scm_procedure_property, "procedure-property", 2, 0, 0, |
56164a5a AW |
191 | (SCM proc, SCM key), |
192 | "Return the property of @var{proc} with name @var{key}.") | |
1bbd0b84 | 193 | #define FUNC_NAME s_scm_procedure_property |
0f2d19dd | 194 | { |
56164a5a AW |
195 | SCM_VALIDATE_PROC (1, proc); |
196 | ||
3fc7e2c1 | 197 | #if (SCM_ENABLE_DEPRECATED == 1) |
56164a5a | 198 | if (scm_is_eq (key, scm_sym_arity)) |
3fc7e2c1 AW |
199 | scm_c_issue_deprecation_warning |
200 | ("Accessing a procedure's arity via `procedure-property' is deprecated.\n" | |
201 | "Use `procedure-minimum-arity instead."); | |
202 | #endif | |
203 | ||
204 | return scm_assq_ref (scm_procedure_properties (proc), key); | |
0f2d19dd | 205 | } |
1bbd0b84 | 206 | #undef FUNC_NAME |
0f2d19dd | 207 | |
3b3b36dd | 208 | SCM_DEFINE (scm_set_procedure_property_x, "set-procedure-property!", 3, 0, 0, |
56164a5a AW |
209 | (SCM proc, SCM key, SCM val), |
210 | "In @var{proc}'s property list, set the property named @var{key} to\n" | |
211 | "@var{val}.") | |
1bbd0b84 | 212 | #define FUNC_NAME s_scm_set_procedure_property_x |
0f2d19dd | 213 | { |
90fa152c | 214 | SCM props; |
56164a5a | 215 | |
e1bdf9e2 | 216 | SCM_VALIDATE_PROC (1, proc); |
3fc7e2c1 AW |
217 | |
218 | #if (SCM_ENABLE_DEPRECATED == 1) | |
56164a5a | 219 | if (scm_is_eq (key, scm_sym_arity)) |
3fc7e2c1 AW |
220 | SCM_MISC_ERROR ("arity is a deprecated read-only property", SCM_EOL); |
221 | #endif | |
c783b082 | 222 | |
e1bdf9e2 | 223 | scm_i_pthread_mutex_lock (&overrides_lock); |
f2ed4473 AW |
224 | props = scm_hashq_ref (overrides, proc, SCM_BOOL_F); |
225 | if (scm_is_false (props)) | |
226 | { | |
227 | if (SCM_PROGRAM_P (proc)) | |
228 | props = scm_i_program_properties (proc); | |
229 | else | |
230 | props = SCM_EOL; | |
231 | } | |
90fa152c | 232 | scm_hashq_set_x (overrides, proc, scm_assq_set_x (props, key, val)); |
e1bdf9e2 | 233 | scm_i_pthread_mutex_unlock (&overrides_lock); |
c783b082 | 234 | |
0f2d19dd JB |
235 | return SCM_UNSPECIFIED; |
236 | } | |
1bbd0b84 | 237 | #undef FUNC_NAME |
0f2d19dd JB |
238 | |
239 | \f | |
240 | ||
1cc91f1b | 241 | |
0f2d19dd JB |
242 | void |
243 | scm_init_procprop () | |
0f2d19dd | 244 | { |
e1bdf9e2 | 245 | overrides = scm_make_weak_key_hash_table (SCM_UNDEFINED); |
f3cf9421 | 246 | arity_overrides = scm_make_weak_key_hash_table (SCM_UNDEFINED); |
a0599745 | 247 | #include "libguile/procprop.x" |
0f2d19dd JB |
248 | } |
249 | ||
89e00824 ML |
250 | |
251 | /* | |
252 | Local Variables: | |
253 | c-file-style: "gnu" | |
254 | End: | |
255 | */ |