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f2c9fcb0 | 1 | /* Copyright (C) 1995,1996,1997,1998, 1999, 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 | |
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. */ |
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 | ||
0f2d19dd JB |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
a0599745 MD |
48 | #include "libguile/_scm.h" |
49 | #include "libguile/procprop.h" | |
50 | #include "libguile/root.h" | |
0f2d19dd | 51 | |
a0599745 | 52 | #include "libguile/gsubr.h" |
1be6b49c | 53 | #include "libguile/deprecation.h" |
0f2d19dd JB |
54 | \f |
55 | /* | |
56 | * gsubr.c | |
57 | * Provide `gsubrs' -- subrs taking a prescribed number of required, optional, | |
58 | * and rest arguments. | |
59 | */ | |
60 | ||
952bedad | 61 | /* #define GSUBR_TEST */ |
0f2d19dd | 62 | |
85db4a2c DH |
63 | SCM_GLOBAL_SYMBOL (scm_sym_name, "name"); |
64 | ||
dc0938d8 | 65 | SCM scm_f_gsubr_apply; |
1cc91f1b | 66 | |
9d78586f MV |
67 | static SCM |
68 | create_gsubr (int define, const char *name, | |
69 | int req, int opt, int rst, SCM (*fcn)()) | |
0f2d19dd | 70 | { |
9d78586f MV |
71 | SCM subr; |
72 | ||
73 | switch (SCM_GSUBR_MAKTYPE (req, opt, rst)) | |
0f2d19dd | 74 | { |
9d78586f MV |
75 | case SCM_GSUBR_MAKTYPE(0, 0, 0): |
76 | subr = scm_c_make_subr (name, scm_tc7_subr_0, fcn); | |
77 | goto create_subr; | |
78 | case SCM_GSUBR_MAKTYPE(1, 0, 0): | |
79 | subr = scm_c_make_subr (name, scm_tc7_subr_1, fcn); | |
80 | goto create_subr; | |
81 | case SCM_GSUBR_MAKTYPE(0, 1, 0): | |
82 | subr = scm_c_make_subr (name, scm_tc7_subr_1o, fcn); | |
83 | goto create_subr; | |
84 | case SCM_GSUBR_MAKTYPE(1, 1, 0): | |
85 | subr = scm_c_make_subr (name, scm_tc7_subr_2o, fcn); | |
86 | goto create_subr; | |
87 | case SCM_GSUBR_MAKTYPE(2, 0, 0): | |
88 | subr = scm_c_make_subr (name, scm_tc7_subr_2, fcn); | |
89 | goto create_subr; | |
90 | case SCM_GSUBR_MAKTYPE(3, 0, 0): | |
91 | subr = scm_c_make_subr (name, scm_tc7_subr_3, fcn); | |
92 | goto create_subr; | |
93 | case SCM_GSUBR_MAKTYPE(0, 0, 1): | |
94 | subr = scm_c_make_subr (name, scm_tc7_lsubr, fcn); | |
95 | goto create_subr; | |
96 | case SCM_GSUBR_MAKTYPE(2, 0, 1): | |
97 | subr = scm_c_make_subr (name, scm_tc7_lsubr_2, fcn); | |
98 | create_subr: | |
99 | if (define) | |
100 | scm_define (SCM_SUBR_ENTRY(subr).name, subr); | |
101 | return subr; | |
102 | default: | |
103 | { | |
104 | SCM cclo = scm_makcclo (scm_f_gsubr_apply, 3L); | |
105 | SCM subr = scm_c_make_subr (name, scm_tc7_subr_0, fcn); | |
106 | SCM sym = SCM_SUBR_ENTRY(subr).name; | |
107 | if (SCM_GSUBR_MAX < req + opt + rst) | |
108 | { | |
109 | fputs ("ERROR in scm_c_make_gsubr: too many args\n", stderr); | |
110 | exit (1); | |
111 | } | |
112 | SCM_SET_GSUBR_PROC (cclo, subr); | |
113 | SCM_SET_GSUBR_TYPE (cclo, | |
114 | SCM_MAKINUM (SCM_GSUBR_MAKTYPE (req, opt, rst))); | |
abae3119 | 115 | #ifdef DEBUG_EXTENSIONS |
9d78586f MV |
116 | if (SCM_REC_PROCNAMES_P) |
117 | scm_set_procedure_property_x (cclo, scm_sym_name, sym); | |
abae3119 | 118 | #endif |
9d78586f MV |
119 | if (define) |
120 | scm_define (sym, cclo); | |
0f2d19dd | 121 | return cclo; |
9d78586f | 122 | } |
0f2d19dd | 123 | } |
0f2d19dd JB |
124 | } |
125 | ||
9de33deb | 126 | SCM |
9d78586f | 127 | scm_c_make_gsubr (const char *name, int req, int opt, int rst, SCM (*fcn)()) |
9de33deb | 128 | { |
9d78586f MV |
129 | return create_gsubr (0, name, req, opt, rst, fcn); |
130 | } | |
131 | ||
132 | SCM | |
133 | scm_c_define_gsubr (const char *name, int req, int opt, int rst, SCM (*fcn)()) | |
134 | { | |
135 | return create_gsubr (1, name, req, opt, rst, fcn); | |
136 | } | |
137 | ||
138 | static SCM | |
139 | create_gsubr_with_generic (int define, | |
140 | const char *name, | |
141 | int req, | |
142 | int opt, | |
143 | int rst, | |
144 | SCM (*fcn)(), | |
145 | SCM *gf) | |
146 | { | |
147 | SCM subr; | |
148 | ||
149 | switch (SCM_GSUBR_MAKTYPE(req, opt, rst)) | |
150 | { | |
151 | case SCM_GSUBR_MAKTYPE(0, 0, 0): | |
152 | subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_0, fcn, gf); | |
153 | goto create_subr; | |
154 | case SCM_GSUBR_MAKTYPE(1, 0, 0): | |
155 | subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_1, fcn, gf); | |
156 | goto create_subr; | |
157 | case SCM_GSUBR_MAKTYPE(0, 1, 0): | |
158 | subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_1o, fcn, gf); | |
159 | goto create_subr; | |
160 | case SCM_GSUBR_MAKTYPE(1, 1, 0): | |
161 | subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_2o, fcn, gf); | |
162 | goto create_subr; | |
163 | case SCM_GSUBR_MAKTYPE(2, 0, 0): | |
164 | subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_2, fcn, gf); | |
165 | goto create_subr; | |
166 | case SCM_GSUBR_MAKTYPE(3, 0, 0): | |
167 | subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_3, fcn, gf); | |
168 | goto create_subr; | |
169 | case SCM_GSUBR_MAKTYPE(0, 0, 1): | |
170 | subr = scm_c_make_subr_with_generic (name, scm_tc7_lsubr, fcn, gf); | |
171 | goto create_subr; | |
172 | case SCM_GSUBR_MAKTYPE(2, 0, 1): | |
173 | subr = scm_c_make_subr_with_generic (name, scm_tc7_lsubr_2, fcn, gf); | |
174 | create_subr: | |
175 | if (define) | |
176 | scm_define (SCM_SUBR_ENTRY(subr).name, subr); | |
177 | return subr; | |
178 | default: | |
179 | ; | |
180 | } | |
181 | scm_misc_error ("scm_c_make_gsubr_with_generic", | |
9de33deb MD |
182 | "can't make primitive-generic with this arity", |
183 | SCM_EOL); | |
4260a7fc | 184 | return SCM_BOOL_F; /* never reached */ |
9de33deb MD |
185 | } |
186 | ||
9d78586f MV |
187 | SCM |
188 | scm_c_make_gsubr_with_generic (const char *name, | |
189 | int req, | |
190 | int opt, | |
191 | int rst, | |
192 | SCM (*fcn)(), | |
193 | SCM *gf) | |
194 | { | |
195 | return create_gsubr_with_generic (0, name, req, opt, rst, fcn, gf); | |
196 | } | |
197 | ||
198 | SCM | |
199 | scm_c_define_gsubr_with_generic (const char *name, | |
200 | int req, | |
201 | int opt, | |
202 | int rst, | |
203 | SCM (*fcn)(), | |
204 | SCM *gf) | |
205 | { | |
206 | return create_gsubr_with_generic (1, name, req, opt, rst, fcn, gf); | |
207 | } | |
208 | ||
0f2d19dd | 209 | |
6fa73e72 GB |
210 | SCM |
211 | scm_gsubr_apply (SCM args) | |
a4bb4e6d | 212 | #define FUNC_NAME "scm_gsubr_apply" |
0f2d19dd | 213 | { |
1be6b49c ML |
214 | SCM self = SCM_CAR (args); |
215 | SCM (*fcn)() = SCM_SUBRF (SCM_GSUBR_PROC (self)); | |
a4bb4e6d | 216 | SCM v[SCM_GSUBR_MAX]; |
c014a02e ML |
217 | long typ = SCM_INUM (SCM_GSUBR_TYPE (self)); |
218 | long i, n = SCM_GSUBR_REQ (typ) + SCM_GSUBR_OPT (typ) + SCM_GSUBR_REST (typ); | |
adc02cce | 219 | #if 0 |
a4bb4e6d DH |
220 | if (n > SCM_GSUBR_MAX) |
221 | scm_misc_error (FUNC_NAME, | |
222 | "Function ~S has illegal arity ~S.", | |
1afff620 | 223 | scm_list_2 (self, SCM_MAKINUM (n))); |
adc02cce | 224 | #endif |
1be6b49c ML |
225 | args = SCM_CDR (args); |
226 | for (i = 0; i < SCM_GSUBR_REQ (typ); i++) { | |
cf7c17e9 | 227 | #ifndef SCM_RECKLESS |
a4bb4e6d DH |
228 | if (SCM_NULLP (args)) |
229 | scm_wrong_num_args (SCM_SNAME (SCM_GSUBR_PROC (self))); | |
0f2d19dd JB |
230 | #endif |
231 | v[i] = SCM_CAR(args); | |
232 | args = SCM_CDR(args); | |
233 | } | |
1be6b49c ML |
234 | for (; i < SCM_GSUBR_REQ (typ) + SCM_GSUBR_OPT (typ); i++) { |
235 | if (SCM_NIMP (args)) { | |
236 | v[i] = SCM_CAR (args); | |
0f2d19dd JB |
237 | args = SCM_CDR(args); |
238 | } | |
239 | else | |
240 | v[i] = SCM_UNDEFINED; | |
241 | } | |
dc0938d8 | 242 | if (SCM_GSUBR_REST(typ)) |
0f2d19dd | 243 | v[i] = args; |
a4bb4e6d DH |
244 | else if (!SCM_NULLP (args)) |
245 | scm_wrong_num_args (SCM_SNAME (SCM_GSUBR_PROC (self))); | |
0f2d19dd | 246 | switch (n) { |
0f2d19dd JB |
247 | case 2: return (*fcn)(v[0], v[1]); |
248 | case 3: return (*fcn)(v[0], v[1], v[2]); | |
249 | case 4: return (*fcn)(v[0], v[1], v[2], v[3]); | |
250 | case 5: return (*fcn)(v[0], v[1], v[2], v[3], v[4]); | |
251 | case 6: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5]); | |
252 | case 7: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6]); | |
253 | case 8: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]); | |
254 | case 9: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8]); | |
255 | case 10: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8], v[9]); | |
256 | } | |
4260a7fc | 257 | return SCM_BOOL_F; /* Never reached. */ |
0f2d19dd | 258 | } |
a4bb4e6d | 259 | #undef FUNC_NAME |
0f2d19dd JB |
260 | |
261 | ||
262 | #ifdef GSUBR_TEST | |
263 | /* A silly example, taking 2 required args, 1 optional, and | |
264 | a scm_list of rest args | |
265 | */ | |
266 | SCM | |
1bbd0b84 | 267 | gsubr_21l(SCM req1, SCM req2, SCM opt, SCM rst) |
0f2d19dd | 268 | { |
b7f3516f | 269 | scm_puts ("gsubr-2-1-l:\n req1: ", scm_cur_outp); |
0f2d19dd | 270 | scm_display(req1, scm_cur_outp); |
b7f3516f | 271 | scm_puts ("\n req2: ", scm_cur_outp); |
0f2d19dd | 272 | scm_display(req2, scm_cur_outp); |
b7f3516f | 273 | scm_puts ("\n opt: ", scm_cur_outp); |
0f2d19dd | 274 | scm_display(opt, scm_cur_outp); |
b7f3516f | 275 | scm_puts ("\n rest: ", scm_cur_outp); |
0f2d19dd JB |
276 | scm_display(rst, scm_cur_outp); |
277 | scm_newline(scm_cur_outp); | |
278 | return SCM_UNSPECIFIED; | |
279 | } | |
280 | #endif | |
281 | ||
282 | ||
1cc91f1b | 283 | |
0f2d19dd JB |
284 | void |
285 | scm_init_gsubr() | |
0f2d19dd | 286 | { |
9d78586f MV |
287 | scm_f_gsubr_apply = scm_c_make_subr ("gsubr-apply", scm_tc7_lsubr, |
288 | scm_gsubr_apply); | |
0f2d19dd | 289 | #ifdef GSUBR_TEST |
9d78586f | 290 | scm_c_define_gsubr ("gsubr-2-1-l", 2, 1, 1, gsubr_21l); /* example */ |
0f2d19dd | 291 | #endif |
85db4a2c DH |
292 | |
293 | #ifndef SCM_MAGIC_SNARFER | |
294 | #include "libguile/gsubr.x" | |
295 | #endif | |
0f2d19dd | 296 | } |
89e00824 | 297 | |
9d78586f MV |
298 | #if SCM_DEBUG_DEPRECATED == 0 |
299 | ||
300 | SCM | |
301 | scm_make_gsubr (const char *name, int req, int opt, int rst, SCM (*fcn)()) | |
302 | { | |
303 | scm_c_issue_deprecation_warning | |
304 | ("`scm_make_gsubr' is deprecated. Use `scm_c_define_gsubr' instead."); | |
305 | ||
306 | return scm_c_define_gsubr (name, req, opt, rst, fcn); | |
307 | } | |
308 | ||
309 | SCM | |
310 | scm_make_gsubr_with_generic (const char *name, | |
311 | int req, int opt, int rst, | |
312 | SCM (*fcn)(), SCM *gf) | |
313 | { | |
314 | scm_c_issue_deprecation_warning | |
315 | ("`scm_make_gsubr_with_generic' is deprecated. " | |
316 | "Use `scm_c_define_gsubr_with_generic' instead."); | |
317 | ||
318 | return scm_c_define_gsubr_with_generic (name, req, opt, rst, fcn, gf); | |
319 | } | |
320 | ||
321 | #endif /* !SCM_DEBUG_DEPRECATED */ | |
322 | ||
323 | ||
89e00824 ML |
324 | /* |
325 | Local Variables: | |
326 | c-file-style: "gnu" | |
327 | End: | |
328 | */ |