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ac51e74b | 1 | /* Copyright (C) 1995,1996,1997,1999,2000,2001, 2006, 2008, 2009 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
73be1d9e MV |
8 | * This library 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 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 | |
92205699 | 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 16 | */ |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd | 19 | \f |
dbb605f5 LC |
20 | #ifdef HAVE_CONFIG_H |
21 | # include <config.h> | |
22 | #endif | |
0f2d19dd | 23 | |
a0599745 | 24 | #include "libguile/_scm.h" |
0f2d19dd | 25 | |
a0599745 MD |
26 | #include "libguile/objects.h" |
27 | #include "libguile/strings.h" | |
28 | #include "libguile/vectors.h" | |
0717dfd8 | 29 | #include "libguile/smob.h" |
c88a8162 | 30 | #include "libguile/deprecation.h" |
bdc88419 | 31 | |
a0599745 MD |
32 | #include "libguile/validate.h" |
33 | #include "libguile/procs.h" | |
3fd8807e | 34 | #include "libguile/procprop.h" |
53e28ed9 | 35 | #include "libguile/objcodes.h" |
7e580328 | 36 | #include "libguile/programs.h" |
0f2d19dd JB |
37 | \f |
38 | ||
39 | ||
40 | /* {Procedures} | |
41 | */ | |
42 | ||
9de33deb | 43 | |
ac51e74b | 44 | SCM |
c014a02e | 45 | scm_c_make_subr (const char *name, long type, SCM (*fcn) ()) |
0f2d19dd | 46 | { |
0f2d19dd | 47 | register SCM z; |
17df23e3 | 48 | SCM sname; |
ac51e74b | 49 | SCM *meta_info; |
9de33deb | 50 | |
e0923570 | 51 | meta_info = scm_gc_malloc (2 * sizeof (*meta_info), "subr meta-info"); |
17df23e3 AW |
52 | sname = scm_from_locale_symbol (name); |
53 | meta_info[0] = sname; | |
ac51e74b LC |
54 | meta_info[1] = SCM_EOL; /* properties */ |
55 | ||
56 | z = scm_double_cell ((scm_t_bits) type, (scm_t_bits) fcn, | |
57 | 0 /* generic */, (scm_t_bits) meta_info); | |
9de33deb | 58 | |
17df23e3 AW |
59 | scm_remember_upto_here_1 (sname); |
60 | ||
0f2d19dd JB |
61 | return z; |
62 | } | |
63 | ||
c88a8162 | 64 | SCM |
c014a02e | 65 | scm_c_define_subr (const char *name, long type, SCM (*fcn) ()) |
c88a8162 MV |
66 | { |
67 | SCM subr = scm_c_make_subr (name, type, fcn); | |
cce8b2ce | 68 | scm_define (SCM_SNAME (subr), subr); |
c88a8162 MV |
69 | return subr; |
70 | } | |
71 | ||
9de33deb MD |
72 | /* This function isn't currently used since subrs are never freed. */ |
73 | /* *fixme* Need mutex here. */ | |
74 | void | |
75 | scm_free_subr_entry (SCM subr) | |
76 | { | |
ac51e74b LC |
77 | scm_gc_free (SCM_SUBR_META_INFO (subr), 2 * sizeof (SCM), |
78 | "subr meta-info"); | |
9de33deb | 79 | } |
1cc91f1b | 80 | |
c88a8162 MV |
81 | SCM |
82 | scm_c_make_subr_with_generic (const char *name, | |
c014a02e | 83 | long type, SCM (*fcn) (), SCM *gf) |
0f2d19dd | 84 | { |
c88a8162 | 85 | SCM subr = scm_c_make_subr (name, type, fcn); |
feccd2d3 | 86 | SCM_SET_SUBR_GENERIC_LOC (subr, gf); |
c88a8162 | 87 | return subr; |
0f2d19dd JB |
88 | } |
89 | ||
9de33deb | 90 | SCM |
c88a8162 | 91 | scm_c_define_subr_with_generic (const char *name, |
c014a02e | 92 | long type, SCM (*fcn) (), SCM *gf) |
9de33deb | 93 | { |
c88a8162 | 94 | SCM subr = scm_c_make_subr_with_generic (name, type, fcn, gf); |
cce8b2ce | 95 | scm_define (SCM_SNAME (subr), subr); |
9de33deb MD |
96 | return subr; |
97 | } | |
98 | ||
9de33deb | 99 | |
3b3b36dd | 100 | SCM_DEFINE (scm_procedure_p, "procedure?", 1, 0, 0, |
8cf97abf MG |
101 | (SCM obj), |
102 | "Return @code{#t} if @var{obj} is a procedure.") | |
1bbd0b84 | 103 | #define FUNC_NAME s_scm_procedure_p |
0f2d19dd JB |
104 | { |
105 | if (SCM_NIMP (obj)) | |
106 | switch (SCM_TYP7 (obj)) | |
107 | { | |
904a077d | 108 | case scm_tcs_struct: |
bdc88419 MD |
109 | if (!SCM_I_OPERATORP (obj)) |
110 | break; | |
0f2d19dd | 111 | case scm_tcs_closures: |
0f2d19dd | 112 | case scm_tcs_subrs: |
b4cd6492 | 113 | case scm_tc7_pws: |
0f2d19dd | 114 | return SCM_BOOL_T; |
0717dfd8 | 115 | case scm_tc7_smob: |
7888309b | 116 | return scm_from_bool (SCM_SMOB_DESCRIPTOR (obj).apply); |
0f2d19dd JB |
117 | default: |
118 | return SCM_BOOL_F; | |
119 | } | |
120 | return SCM_BOOL_F; | |
121 | } | |
1bbd0b84 | 122 | #undef FUNC_NAME |
0f2d19dd | 123 | |
3b3b36dd | 124 | SCM_DEFINE (scm_closure_p, "closure?", 1, 0, 0, |
1bbd0b84 | 125 | (SCM obj), |
8cf97abf | 126 | "Return @code{#t} if @var{obj} is a closure.") |
1bbd0b84 | 127 | #define FUNC_NAME s_scm_closure_p |
ecdb5eb2 | 128 | { |
7888309b | 129 | return scm_from_bool (SCM_CLOSUREP (obj)); |
ecdb5eb2 | 130 | } |
1bbd0b84 | 131 | #undef FUNC_NAME |
ecdb5eb2 | 132 | |
3b3b36dd | 133 | SCM_DEFINE (scm_thunk_p, "thunk?", 1, 0, 0, |
8cf97abf MG |
134 | (SCM obj), |
135 | "Return @code{#t} if @var{obj} is a thunk.") | |
1bbd0b84 | 136 | #define FUNC_NAME s_scm_thunk_p |
44bd53b9 MD |
137 | { |
138 | if (SCM_NIMP (obj)) | |
b4cd6492 MD |
139 | { |
140 | again: | |
141 | switch (SCM_TYP7 (obj)) | |
142 | { | |
143 | case scm_tcs_closures: | |
d2e53ed6 | 144 | return scm_from_bool (!scm_is_pair (SCM_CLOSURE_FORMALS (obj))); |
b4cd6492 MD |
145 | case scm_tc7_subr_0: |
146 | case scm_tc7_subr_1o: | |
147 | case scm_tc7_lsubr: | |
148 | case scm_tc7_rpsubr: | |
149 | case scm_tc7_asubr: | |
b4cd6492 | 150 | return SCM_BOOL_T; |
e20d7001 LC |
151 | case scm_tc7_gsubr: |
152 | return scm_from_bool (SCM_GSUBR_REQ (SCM_GSUBR_TYPE (obj)) == 0); | |
b4cd6492 MD |
153 | case scm_tc7_pws: |
154 | obj = SCM_PROCEDURE (obj); | |
155 | goto again; | |
156 | default: | |
7e580328 AW |
157 | if (SCM_PROGRAM_P (obj) && SCM_PROGRAM_DATA (obj)->nargs == 0) |
158 | return SCM_BOOL_T; | |
159 | /* otherwise fall through */ | |
b4cd6492 MD |
160 | } |
161 | } | |
44bd53b9 MD |
162 | return SCM_BOOL_F; |
163 | } | |
1bbd0b84 | 164 | #undef FUNC_NAME |
44bd53b9 | 165 | |
9de33deb MD |
166 | /* Only used internally. */ |
167 | int | |
168 | scm_subr_p (SCM obj) | |
169 | { | |
170 | if (SCM_NIMP (obj)) | |
171 | switch (SCM_TYP7 (obj)) | |
172 | { | |
173 | case scm_tcs_subrs: | |
174 | return 1; | |
175 | default: | |
176 | ; | |
177 | } | |
178 | return 0; | |
179 | } | |
180 | ||
3b3b36dd | 181 | SCM_DEFINE (scm_procedure_documentation, "procedure-documentation", 1, 0, 0, |
1bbd0b84 | 182 | (SCM proc), |
b380b885 MD |
183 | "Return the documentation string associated with @code{proc}. By\n" |
184 | "convention, if a procedure contains more than one expression and the\n" | |
185 | "first expression is a string constant, that string is assumed to contain\n" | |
186 | "documentation for that procedure.") | |
1bbd0b84 | 187 | #define FUNC_NAME s_scm_procedure_documentation |
c2c82fba MD |
188 | { |
189 | SCM code; | |
bc36d050 | 190 | SCM_ASSERT (scm_is_true (scm_procedure_p (proc)), |
9a09deb1 | 191 | proc, SCM_ARG1, FUNC_NAME); |
c2c82fba MD |
192 | switch (SCM_TYP7 (proc)) |
193 | { | |
194 | case scm_tcs_closures: | |
f9450cdb | 195 | code = SCM_CLOSURE_BODY (proc); |
d2e53ed6 | 196 | if (scm_is_null (SCM_CDR (code))) |
c2c82fba MD |
197 | return SCM_BOOL_F; |
198 | code = SCM_CAR (code); | |
7f9994d9 | 199 | if (scm_is_string (code)) |
c2c82fba | 200 | return code; |
5c9e7dad DH |
201 | else |
202 | return SCM_BOOL_F; | |
c2c82fba MD |
203 | default: |
204 | return SCM_BOOL_F; | |
c2c82fba MD |
205 | } |
206 | } | |
1bbd0b84 | 207 | #undef FUNC_NAME |
c2c82fba | 208 | |
0f2d19dd | 209 | |
b4cd6492 MD |
210 | /* Procedure-with-setter |
211 | */ | |
212 | ||
a1ec6916 | 213 | SCM_DEFINE (scm_procedure_with_setter_p, "procedure-with-setter?", 1, 0, 0, |
1bbd0b84 | 214 | (SCM obj), |
8cf97abf MG |
215 | "Return @code{#t} if @var{obj} is a procedure with an\n" |
216 | "associated setter procedure.") | |
1bbd0b84 | 217 | #define FUNC_NAME s_scm_procedure_with_setter_p |
b4cd6492 | 218 | { |
7888309b | 219 | return scm_from_bool(SCM_PROCEDURE_WITH_SETTER_P (obj)); |
b4cd6492 | 220 | } |
1bbd0b84 | 221 | #undef FUNC_NAME |
b4cd6492 | 222 | |
a1ec6916 | 223 | SCM_DEFINE (scm_make_procedure_with_setter, "make-procedure-with-setter", 2, 0, 0, |
1bbd0b84 | 224 | (SCM procedure, SCM setter), |
8cf97abf MG |
225 | "Create a new procedure which behaves like @var{procedure}, but\n" |
226 | "with the associated setter @var{setter}.") | |
1bbd0b84 | 227 | #define FUNC_NAME s_scm_make_procedure_with_setter |
b4cd6492 | 228 | { |
3fd8807e | 229 | SCM name, ret; |
e1f8eb2b MD |
230 | SCM_VALIDATE_PROC (1, procedure); |
231 | SCM_VALIDATE_PROC (2, setter); | |
3fd8807e AW |
232 | ret = scm_double_cell (scm_tc7_pws, |
233 | SCM_UNPACK (procedure), | |
234 | SCM_UNPACK (setter), 0); | |
235 | /* don't use procedure_name, because don't care enough to do a reverse | |
236 | lookup */ | |
237 | switch (SCM_TYP7 (procedure)) { | |
238 | case scm_tcs_subrs: | |
239 | name = SCM_SNAME (procedure); | |
240 | break; | |
241 | default: | |
242 | name = scm_procedure_property (procedure, scm_sym_name); | |
243 | break; | |
244 | } | |
245 | if (scm_is_true (name)) | |
246 | scm_set_procedure_property_x (ret, scm_sym_name, name); | |
247 | return ret; | |
b4cd6492 | 248 | } |
1bbd0b84 | 249 | #undef FUNC_NAME |
b4cd6492 | 250 | |
a1ec6916 | 251 | SCM_DEFINE (scm_procedure, "procedure", 1, 0, 0, |
1bbd0b84 | 252 | (SCM proc), |
8cf97abf MG |
253 | "Return the procedure of @var{proc}, which must be either a\n" |
254 | "procedure with setter, or an operator struct.") | |
1bbd0b84 | 255 | #define FUNC_NAME s_scm_procedure |
b4cd6492 | 256 | { |
e1f8eb2b | 257 | SCM_VALIDATE_NIM (1, proc); |
b4cd6492 MD |
258 | if (SCM_PROCEDURE_WITH_SETTER_P (proc)) |
259 | return SCM_PROCEDURE (proc); | |
260 | else if (SCM_STRUCTP (proc)) | |
261 | { | |
1bbd0b84 | 262 | SCM_ASSERT (SCM_I_OPERATORP (proc), proc, SCM_ARG1, FUNC_NAME); |
b4cd6492 MD |
263 | return proc; |
264 | } | |
1bbd0b84 | 265 | SCM_WRONG_TYPE_ARG (1, proc); |
4260a7fc | 266 | return SCM_BOOL_F; /* not reached */ |
b4cd6492 | 267 | } |
1bbd0b84 | 268 | #undef FUNC_NAME |
b4cd6492 | 269 | |
f5267231 | 270 | SCM_GPROC (s_setter, "setter", 1, 0, 0, scm_setter, g_setter); |
b4cd6492 MD |
271 | |
272 | SCM | |
273 | scm_setter (SCM proc) | |
274 | { | |
f5267231 | 275 | SCM_GASSERT1 (SCM_NIMP (proc), g_setter, proc, SCM_ARG1, s_setter); |
b4cd6492 MD |
276 | if (SCM_PROCEDURE_WITH_SETTER_P (proc)) |
277 | return SCM_SETTER (proc); | |
278 | else if (SCM_STRUCTP (proc)) | |
279 | { | |
c72a774a | 280 | SCM setter; |
f5267231 MD |
281 | SCM_GASSERT1 (SCM_I_OPERATORP (proc), |
282 | g_setter, proc, SCM_ARG1, s_setter); | |
c72a774a MD |
283 | setter = (SCM_I_ENTITYP (proc) |
284 | ? SCM_ENTITY_SETTER (proc) | |
285 | : SCM_OPERATOR_SETTER (proc)); | |
286 | if (SCM_NIMP (setter)) | |
287 | return setter; | |
288 | /* fall through */ | |
b4cd6492 | 289 | } |
f5267231 | 290 | SCM_WTA_DISPATCH_1 (g_setter, proc, SCM_ARG1, s_setter); |
b038d983 | 291 | return SCM_BOOL_F; /* not reached */ |
b4cd6492 | 292 | } |
1cc91f1b | 293 | |
ac51e74b | 294 | \f |
0f2d19dd JB |
295 | void |
296 | scm_init_procs () | |
0f2d19dd | 297 | { |
a0599745 | 298 | #include "libguile/procs.x" |
0f2d19dd | 299 | } |
89e00824 ML |
300 | |
301 | /* | |
302 | Local Variables: | |
303 | c-file-style: "gnu" | |
304 | End: | |
305 | */ |