Commit | Line | Data |
---|---|---|
0f2d19dd JB |
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 | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
45 | ||
46 | \f | |
47 | ||
48 | ||
49 | /* NUM_HASH_BUCKETS is the number of symbol scm_hash table buckets. | |
50 | */ | |
51 | #define NUM_HASH_BUCKETS 137 | |
52 | ||
53 | \f | |
54 | ||
55 | ||
56 | /* {Symbols} | |
57 | */ | |
58 | ||
59 | #ifdef __STDC__ | |
60 | unsigned long | |
61 | scm_strhash (unsigned char *str, scm_sizet len, unsigned long n) | |
62 | #else | |
63 | unsigned long | |
64 | scm_strhash (str, len, n) | |
65 | unsigned char *str; | |
66 | scm_sizet len; | |
67 | unsigned long n; | |
68 | #endif | |
69 | { | |
70 | if (len > 5) | |
71 | { | |
72 | scm_sizet i = 5; | |
73 | unsigned long h = 264 % n; | |
74 | while (i--) | |
75 | h = ((h << 8) + ((unsigned) (scm_downcase[str[h % len]]))) % n; | |
76 | return h; | |
77 | } | |
78 | else | |
79 | { | |
80 | scm_sizet i = len; | |
81 | unsigned long h = 0; | |
82 | while (i) | |
83 | h = ((h << 8) + ((unsigned) (scm_downcase[str[--i]]))) % n; | |
84 | return h; | |
85 | } | |
86 | } | |
87 | ||
88 | int scm_symhash_dim = NUM_HASH_BUCKETS; | |
89 | ||
90 | ||
91 | /* scm_sym2vcell | |
92 | * looks up the symbol in the symhash table. | |
93 | */ | |
94 | #ifdef __STDC__ | |
95 | SCM | |
96 | scm_sym2vcell (SCM sym, SCM thunk, SCM definep) | |
97 | #else | |
98 | SCM | |
99 | scm_sym2vcell (sym, thunk, definep) | |
100 | SCM sym; | |
101 | SCM thunk; | |
102 | SCM definep; | |
103 | #endif | |
104 | { | |
105 | if (SCM_NIMP(thunk)) | |
106 | { | |
107 | SCM var = scm_apply (thunk, sym, scm_cons(definep, scm_listofnull)); | |
108 | ||
109 | if (var == SCM_BOOL_F) | |
110 | return SCM_BOOL_F; | |
111 | else | |
112 | { | |
113 | if (SCM_IMP(var) || !SCM_VARIABLEP (var)) | |
114 | scm_wta (sym, "strangely interned symbol? ", ""); | |
115 | return SCM_VARVCELL (var); | |
116 | } | |
117 | } | |
118 | else | |
119 | { | |
120 | SCM lsym; | |
121 | SCM * lsymp; | |
122 | SCM z; | |
123 | scm_sizet scm_hash = scm_strhash (SCM_UCHARS (sym), (scm_sizet) SCM_LENGTH (sym), | |
124 | (unsigned long) scm_symhash_dim); | |
125 | ||
126 | SCM_DEFER_INTS; | |
127 | for (lsym = SCM_VELTS (scm_symhash)[scm_hash]; SCM_NIMP (lsym); lsym = SCM_CDR (lsym)) | |
128 | { | |
129 | z = SCM_CAR (lsym); | |
130 | if (SCM_CAR (z) == sym) | |
131 | { | |
132 | SCM_ALLOW_INTS; | |
133 | return z; | |
134 | } | |
135 | } | |
136 | ||
137 | for (lsym = *(lsymp = &SCM_VELTS (scm_weak_symhash)[scm_hash]); | |
138 | SCM_NIMP (lsym); | |
139 | lsym = *(lsymp = &SCM_CDR (lsym))) | |
140 | { | |
141 | z = SCM_CAR (lsym); | |
142 | if (SCM_CAR (z) == sym) | |
143 | { | |
144 | if (definep) | |
145 | { | |
146 | *lsymp = SCM_CDR (lsym); | |
147 | SCM_SETCDR (lsym, SCM_VELTS(scm_symhash)[scm_hash]); | |
148 | SCM_VELTS(scm_symhash)[scm_hash] = lsym; | |
149 | } | |
150 | SCM_ALLOW_INTS; | |
151 | return z; | |
152 | } | |
153 | } | |
154 | SCM_ALLOW_INTS; | |
155 | return scm_wta (sym, "uninterned symbol? ", ""); | |
156 | } | |
157 | } | |
158 | ||
159 | /* scm_sym2ovcell | |
160 | * looks up the symbol in an arbitrary obarray (defaulting to scm_symhash). | |
161 | */ | |
162 | #ifdef __STDC__ | |
163 | SCM | |
164 | scm_sym2ovcell_soft (SCM sym, SCM obarray) | |
165 | #else | |
166 | SCM | |
167 | scm_sym2ovcell_soft (sym, obarray) | |
168 | SCM sym; | |
169 | SCM obarray; | |
170 | #endif | |
171 | { | |
172 | SCM lsym, z; | |
173 | scm_sizet scm_hash; | |
174 | ||
175 | scm_hash = scm_strhash (SCM_UCHARS (sym), | |
176 | (scm_sizet) SCM_LENGTH (sym), | |
177 | SCM_LENGTH (obarray)); | |
178 | SCM_REDEFER_INTS; | |
179 | for (lsym = SCM_VELTS (obarray)[scm_hash]; | |
180 | SCM_NIMP (lsym); | |
181 | lsym = SCM_CDR (lsym)) | |
182 | { | |
183 | z = SCM_CAR (lsym); | |
184 | if (SCM_CAR (z) == sym) | |
185 | { | |
186 | SCM_REALLOW_INTS; | |
187 | return z; | |
188 | } | |
189 | } | |
190 | SCM_REALLOW_INTS; | |
191 | return SCM_BOOL_F; | |
192 | } | |
193 | ||
194 | #ifdef __STDC__ | |
195 | SCM | |
196 | scm_sym2ovcell (SCM sym, SCM obarray) | |
197 | #else | |
198 | SCM | |
199 | scm_sym2ovcell (sym, obarray) | |
200 | SCM sym; | |
201 | SCM obarray; | |
202 | #endif | |
203 | { | |
204 | SCM answer; | |
205 | answer = scm_sym2ovcell_soft (sym, obarray); | |
206 | if (answer != SCM_BOOL_F) | |
207 | return answer; | |
208 | scm_wta (sym, "uninterned symbol? ", ""); | |
209 | return SCM_UNSPECIFIED; /* not reached */ | |
210 | } | |
211 | ||
212 | #ifdef __STDC__ | |
213 | SCM | |
214 | scm_intern_obarray_soft (char *name, scm_sizet len, SCM obarray, int softness) | |
215 | #else | |
216 | SCM | |
217 | scm_intern_obarray_soft (name, len, obarray, softness) | |
218 | char *name; | |
219 | scm_sizet len; | |
220 | SCM obarray; | |
221 | int softness; | |
222 | #endif | |
223 | { | |
224 | SCM lsym; | |
225 | SCM z; | |
226 | register scm_sizet i; | |
227 | register unsigned char *tmp; | |
228 | scm_sizet scm_hash; | |
229 | ||
230 | SCM_REDEFER_INTS; | |
231 | ||
232 | i = len; | |
233 | tmp = (unsigned char *) name; | |
234 | ||
235 | if (obarray == SCM_BOOL_F) | |
236 | { | |
237 | scm_hash = scm_strhash (tmp, i, 1019); | |
238 | goto uninterned_symbol; | |
239 | } | |
240 | ||
241 | scm_hash = scm_strhash (tmp, i, SCM_LENGTH(obarray)); | |
242 | ||
243 | if (softness == -1) | |
244 | goto mustintern_symbol; | |
245 | ||
246 | retry_new_obarray: | |
247 | for (lsym = SCM_VELTS (obarray)[scm_hash]; SCM_NIMP (lsym); lsym = SCM_CDR (lsym)) | |
248 | { | |
249 | z = SCM_CAR (lsym); | |
250 | z = SCM_CAR (z); | |
251 | tmp = SCM_UCHARS (z); | |
252 | if (SCM_LENGTH (z) != len) | |
253 | goto trynext; | |
254 | for (i = len; i--;) | |
255 | if (((unsigned char *) name)[i] != tmp[i]) | |
256 | goto trynext; | |
257 | { | |
258 | SCM a; | |
259 | a = SCM_CAR (lsym); | |
260 | SCM_REALLOW_INTS; | |
261 | return a; | |
262 | } | |
263 | trynext:; | |
264 | } | |
265 | ||
266 | if (obarray == scm_symhash) | |
267 | { | |
268 | obarray = scm_weak_symhash; | |
269 | goto retry_new_obarray; | |
270 | } | |
271 | ||
272 | uninterned_symbol: | |
273 | if (softness) | |
274 | { | |
275 | SCM_REALLOW_INTS; | |
276 | return SCM_BOOL_F; | |
277 | } | |
278 | ||
279 | mustintern_symbol: | |
280 | lsym = scm_makfromstr (name, len, SCM_SYMBOL_SLOTS); | |
281 | ||
282 | SCM_SETLENGTH (lsym, (long) len, scm_tc7_msymbol); | |
283 | SCM_SYMBOL_MULTI_BYTE_SCM_STRINGP (lsym) = SCM_BOOL_F; | |
284 | SCM_SYMBOL_HASH (lsym) = scm_hash; | |
285 | if (obarray == SCM_BOOL_F) | |
286 | { | |
287 | SCM answer; | |
288 | SCM_REALLOW_INTS; | |
289 | SCM_NEWCELL (answer); | |
290 | SCM_DEFER_INTS; | |
291 | SCM_CAR (answer) = lsym; | |
292 | SCM_CDR (answer) = SCM_UNDEFINED; | |
293 | SCM_REALLOW_INTS; | |
294 | return answer; | |
295 | } | |
296 | else | |
297 | { | |
298 | SCM a; | |
299 | SCM b; | |
300 | ||
301 | SCM_NEWCELL (a); | |
302 | SCM_NEWCELL (b); | |
303 | SCM_SETCAR (a, lsym); | |
304 | SCM_SETCDR (a, SCM_UNDEFINED); | |
305 | SCM_SETCAR (b, a); | |
306 | SCM_SETCDR (b, SCM_VELTS(obarray)[scm_hash]); | |
307 | SCM_VELTS(obarray)[scm_hash] = b; | |
308 | SCM_REALLOW_INTS; | |
309 | return SCM_CAR (b); | |
310 | } | |
311 | } | |
312 | ||
313 | #ifdef __STDC__ | |
314 | SCM | |
315 | scm_intern_obarray (char *name, scm_sizet len, SCM obarray) | |
316 | #else | |
317 | SCM | |
318 | scm_intern_obarray (name, len, obarray) | |
319 | char *name; | |
320 | scm_sizet len; | |
321 | SCM obarray; | |
322 | #endif | |
323 | { | |
324 | return scm_intern_obarray_soft (name, len, obarray, 0); | |
325 | } | |
326 | ||
327 | ||
328 | #ifdef __STDC__ | |
329 | SCM | |
330 | scm_intern (char *name, scm_sizet len) | |
331 | #else | |
332 | SCM | |
333 | scm_intern (name, len) | |
334 | char *name; | |
335 | scm_sizet len; | |
336 | #endif | |
337 | { | |
338 | return scm_intern_obarray (name, len, scm_symhash); | |
339 | } | |
340 | ||
341 | #ifdef __STDC__ | |
342 | SCM | |
343 | scm_intern0 (char * name) | |
344 | #else | |
345 | SCM | |
346 | scm_intern0 (name) | |
347 | char * name; | |
348 | #endif | |
349 | { | |
350 | return scm_intern (name, strlen (name)); | |
351 | } | |
352 | ||
353 | ||
354 | #ifdef __STDC__ | |
355 | SCM | |
356 | scm_sysintern (char *name, SCM val) | |
357 | #else | |
358 | SCM | |
359 | scm_sysintern (name, val) | |
360 | char *name; | |
361 | SCM val; | |
362 | #endif | |
363 | { | |
364 | SCM easy_answer; | |
365 | SCM_DEFER_INTS; | |
366 | easy_answer = scm_intern_obarray_soft (name, strlen (name), scm_symhash, 1); | |
367 | if (SCM_NIMP (easy_answer)) | |
368 | { | |
369 | SCM_CDR (easy_answer) = val; | |
370 | SCM_ALLOW_INTS; | |
371 | return easy_answer; | |
372 | } | |
373 | else | |
374 | { | |
375 | SCM lsym; | |
376 | scm_sizet len = strlen (name); | |
377 | register unsigned char *tmp = (unsigned char *) name; | |
378 | scm_sizet scm_hash = scm_strhash (tmp, len, (unsigned long) scm_symhash_dim); | |
379 | SCM_NEWCELL (lsym); | |
380 | SCM_SETLENGTH (lsym, (long) len, scm_tc7_ssymbol); | |
381 | SCM_SETCHARS (lsym, name); | |
382 | lsym = scm_cons (lsym, val); | |
383 | SCM_VELTS (scm_symhash)[scm_hash] = scm_cons (lsym, SCM_VELTS (scm_symhash)[scm_hash]); | |
384 | SCM_ALLOW_INTS; | |
385 | return lsym; | |
386 | } | |
387 | } | |
388 | ||
389 | ||
390 | SCM_PROC(s_symbol_p, "symbol?", 1, 0, 0, scm_symbol_p); | |
391 | #ifdef __STDC__ | |
392 | SCM | |
393 | scm_symbol_p(SCM x) | |
394 | #else | |
395 | SCM | |
396 | scm_symbol_p(x) | |
397 | SCM x; | |
398 | #endif | |
399 | { | |
400 | if SCM_IMP(x) return SCM_BOOL_F; | |
401 | return SCM_SYMBOLP(x) ? SCM_BOOL_T : SCM_BOOL_F; | |
402 | } | |
403 | ||
404 | SCM_PROC(s_symbol_to_string, "symbol->string", 1, 0, 0, scm_symbol_to_string); | |
405 | #ifdef __STDC__ | |
406 | SCM | |
407 | scm_symbol_to_string(SCM s) | |
408 | #else | |
409 | SCM | |
410 | scm_symbol_to_string(s) | |
411 | SCM s; | |
412 | #endif | |
413 | { | |
414 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG1, s_symbol_to_string); | |
415 | return scm_makfromstr(SCM_CHARS(s), (scm_sizet)SCM_LENGTH(s), 0); | |
416 | } | |
417 | ||
418 | ||
419 | SCM_PROC(s_string_to_symbol, "string->symbol", 1, 0, 0, scm_string_to_symbol); | |
420 | #ifdef __STDC__ | |
421 | SCM | |
422 | scm_string_to_symbol(SCM s) | |
423 | #else | |
424 | SCM | |
425 | scm_string_to_symbol(s) | |
426 | SCM s; | |
427 | #endif | |
428 | { | |
429 | SCM vcell; | |
430 | SCM answer; | |
431 | ||
432 | SCM_ASSERT(SCM_NIMP(s) && SCM_ROSTRINGP(s), s, SCM_ARG1, s_string_to_symbol); | |
433 | vcell = scm_intern(SCM_ROCHARS(s), (scm_sizet)SCM_LENGTH(s)); | |
434 | answer = SCM_CAR (vcell); | |
435 | if (SCM_TYP7 (answer) == scm_tc7_msymbol) | |
436 | { | |
437 | if (SCM_REGULAR_STRINGP (s)) | |
438 | SCM_SYMBOL_MULTI_BYTE_SCM_STRINGP (answer) = SCM_BOOL_F; | |
439 | else | |
440 | SCM_SYMBOL_MULTI_BYTE_SCM_STRINGP (answer) = SCM_BOOL_T; | |
441 | } | |
442 | return answer; | |
443 | } | |
444 | ||
445 | ||
446 | SCM_PROC(s_string_to_obarray_symbol, "string->obarray-symbol", 2, 1, 0, scm_string_to_obarray_symbol); | |
447 | #ifdef __STDC__ | |
448 | SCM | |
449 | scm_string_to_obarray_symbol(SCM o, SCM s, SCM softp) | |
450 | #else | |
451 | SCM | |
452 | scm_string_to_obarray_symbol(o, s, softp) | |
453 | SCM o; | |
454 | SCM s; | |
455 | SCM softp; | |
456 | #endif | |
457 | { | |
458 | SCM vcell; | |
459 | SCM answer; | |
460 | int softness; | |
461 | ||
462 | SCM_ASSERT(SCM_NIMP(s) && SCM_ROSTRINGP(s), s, SCM_ARG2, s_string_to_obarray_symbol); | |
463 | SCM_ASSERT((o == SCM_BOOL_F) || (o == SCM_BOOL_T) || (SCM_NIMP(o) && SCM_VECTORP(o)), | |
464 | o, SCM_ARG1, s_string_to_obarray_symbol); | |
465 | ||
466 | softness = ((softp != SCM_UNDEFINED) && (softp != SCM_BOOL_F)); | |
467 | /* iron out some screwy calling conventions */ | |
468 | if (o == SCM_BOOL_F) | |
469 | o = scm_symhash; | |
470 | else if (o == SCM_BOOL_T) | |
471 | o = SCM_BOOL_F; | |
472 | ||
473 | vcell = scm_intern_obarray_soft (SCM_ROCHARS(s), (scm_sizet)SCM_ROLENGTH(s), o, softness); | |
474 | if (vcell == SCM_BOOL_F) | |
475 | return vcell; | |
476 | answer = SCM_CAR (vcell); | |
477 | if (SCM_TYP7 (s) == scm_tc7_msymbol) | |
478 | { | |
479 | if (SCM_REGULAR_STRINGP (s)) | |
480 | SCM_SYMBOL_MULTI_BYTE_SCM_STRINGP (answer) = SCM_BOOL_F; | |
481 | else | |
482 | SCM_SYMBOL_MULTI_BYTE_SCM_STRINGP (answer) = SCM_BOOL_T; | |
483 | } | |
484 | return answer; | |
485 | } | |
486 | ||
487 | SCM_PROC(s_intern_symbol, "intern-symbol", 2, 0, 0, scm_intern_symbol); | |
488 | #ifdef __STDC__ | |
489 | SCM | |
490 | scm_intern_symbol(SCM o, SCM s) | |
491 | #else | |
492 | SCM | |
493 | scm_intern_symbol(o, s) | |
494 | SCM o; | |
495 | SCM s; | |
496 | #endif | |
497 | { | |
498 | scm_sizet hval; | |
499 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG2, s_intern_symbol); | |
500 | if (o == SCM_BOOL_F) | |
501 | o = scm_symhash; | |
502 | SCM_ASSERT(SCM_NIMP(o) && SCM_VECTORP(o), o, SCM_ARG1, s_intern_symbol); | |
503 | hval = scm_strhash (SCM_UCHARS (s), SCM_LENGTH (s), SCM_LENGTH(o)); | |
504 | /* If the symbol is already interned, simply return. */ | |
505 | SCM_REDEFER_INTS; | |
506 | { | |
507 | SCM lsym; | |
508 | SCM sym; | |
509 | for (lsym = SCM_VELTS (o)[hval]; | |
510 | SCM_NIMP (lsym); | |
511 | lsym = SCM_CDR (lsym)) | |
512 | { | |
513 | sym = SCM_CAR (lsym); | |
514 | if (SCM_CAR (sym) == s) | |
515 | { | |
516 | SCM_REALLOW_INTS; | |
517 | return SCM_UNSPECIFIED; | |
518 | } | |
519 | } | |
520 | SCM_VELTS (o)[hval] = | |
521 | scm_acons (s, SCM_UNDEFINED, SCM_VELTS (o)[hval]); | |
522 | } | |
523 | SCM_REALLOW_INTS; | |
524 | return SCM_UNSPECIFIED; | |
525 | } | |
526 | ||
527 | SCM_PROC(s_unintern_symbol, "unintern-symbol", 2, 0, 0, scm_unintern_symbol); | |
528 | #ifdef __STDC__ | |
529 | SCM | |
530 | scm_unintern_symbol(SCM o, SCM s) | |
531 | #else | |
532 | SCM | |
533 | scm_unintern_symbol(o, s) | |
534 | SCM o; | |
535 | SCM s; | |
536 | #endif | |
537 | { | |
538 | scm_sizet hval; | |
539 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG2, s_unintern_symbol); | |
540 | if (o == SCM_BOOL_F) | |
541 | o = scm_symhash; | |
542 | SCM_ASSERT(SCM_NIMP(o) && SCM_VECTORP(o), o, SCM_ARG1, s_unintern_symbol); | |
543 | hval = scm_strhash (SCM_UCHARS (s), SCM_LENGTH (s), SCM_LENGTH(o)); | |
544 | SCM_DEFER_INTS; | |
545 | { | |
546 | SCM lsym_follow; | |
547 | SCM lsym; | |
548 | SCM sym; | |
549 | for (lsym = SCM_VELTS (o)[hval], lsym_follow = SCM_BOOL_F; | |
550 | SCM_NIMP (lsym); | |
551 | lsym_follow = lsym, lsym = SCM_CDR (lsym)) | |
552 | { | |
553 | sym = SCM_CAR (lsym); | |
554 | if (SCM_CAR (sym) == s) | |
555 | { | |
556 | /* Found the symbol to unintern. */ | |
557 | if (lsym_follow == SCM_BOOL_F) | |
558 | SCM_VELTS(o)[hval] = lsym; | |
559 | else | |
560 | SCM_CDR(lsym_follow) = SCM_CDR(lsym); | |
561 | SCM_ALLOW_INTS; | |
562 | return SCM_BOOL_T; | |
563 | } | |
564 | } | |
565 | } | |
566 | SCM_ALLOW_INTS; | |
567 | return SCM_BOOL_F; | |
568 | } | |
569 | ||
570 | SCM_PROC(s_symbol_binding, "symbol-binding", 2, 0, 0, scm_symbol_binding); | |
571 | #ifdef __STDC__ | |
572 | SCM | |
573 | scm_symbol_binding (SCM o, SCM s) | |
574 | #else | |
575 | SCM | |
576 | scm_symbol_binding (o, s) | |
577 | SCM o; | |
578 | SCM s; | |
579 | #endif | |
580 | { | |
581 | SCM vcell; | |
582 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG2, s_symbol_binding); | |
583 | if (o == SCM_BOOL_F) | |
584 | o = scm_symhash; | |
585 | SCM_ASSERT(SCM_NIMP(o) && SCM_VECTORP(o), o, SCM_ARG1, s_symbol_binding); | |
586 | vcell = scm_sym2ovcell (s, o); | |
587 | return SCM_CDR(vcell); | |
588 | } | |
589 | ||
590 | ||
591 | SCM_PROC(s_symbol_interned_p, "symbol-interned?", 2, 0, 0, scm_symbol_interned_p); | |
592 | #ifdef __STDC__ | |
593 | SCM | |
594 | scm_symbol_interned_p (SCM o, SCM s) | |
595 | #else | |
596 | SCM | |
597 | scm_symbol_interned_p (o, s) | |
598 | SCM o; | |
599 | SCM s; | |
600 | #endif | |
601 | { | |
602 | SCM vcell; | |
603 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG2, s_symbol_interned_p); | |
604 | if (o == SCM_BOOL_F) | |
605 | o = scm_symhash; | |
606 | SCM_ASSERT(SCM_NIMP(o) && SCM_VECTORP(o), o, SCM_ARG1, s_symbol_interned_p); | |
607 | vcell = scm_sym2ovcell_soft (s, o); | |
608 | if (SCM_IMP(vcell) && (o == scm_symhash)) | |
609 | vcell = scm_sym2ovcell_soft (s, scm_weak_symhash); | |
610 | return (SCM_NIMP(vcell) | |
611 | ? SCM_BOOL_T | |
612 | : SCM_BOOL_F); | |
613 | } | |
614 | ||
615 | ||
616 | SCM_PROC(s_symbol_bound_p, "symbol-bound?", 2, 0, 0, scm_symbol_bound_p); | |
617 | #ifdef __STDC__ | |
618 | SCM | |
619 | scm_symbol_bound_p (SCM o, SCM s) | |
620 | #else | |
621 | SCM | |
622 | scm_symbol_bound_p (o, s) | |
623 | SCM o; | |
624 | SCM s; | |
625 | #endif | |
626 | { | |
627 | SCM vcell; | |
628 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG2, s_symbol_bound_p); | |
629 | if (o == SCM_BOOL_F) | |
630 | o = scm_symhash; | |
631 | SCM_ASSERT(SCM_NIMP(o) && SCM_VECTORP(o), o, SCM_ARG1, s_symbol_bound_p); | |
632 | vcell = scm_sym2ovcell_soft (s, o); | |
633 | return (( SCM_NIMP(vcell) | |
634 | && (SCM_CDR(vcell) != SCM_UNDEFINED)) | |
635 | ? SCM_BOOL_T | |
636 | : SCM_BOOL_F); | |
637 | } | |
638 | ||
639 | ||
640 | SCM_PROC(s_symbol_set_x, "symbol-set!", 3, 0, 0, scm_symbol_set_x); | |
641 | #ifdef __STDC__ | |
642 | SCM | |
643 | scm_symbol_set_x (SCM o, SCM s, SCM v) | |
644 | #else | |
645 | SCM | |
646 | scm_symbol_set_x (o, s, v) | |
647 | SCM o; | |
648 | SCM s; | |
649 | SCM v; | |
650 | #endif | |
651 | { | |
652 | SCM vcell; | |
653 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG2, s_symbol_set_x); | |
654 | if (o == SCM_BOOL_F) | |
655 | o = scm_symhash; | |
656 | SCM_ASSERT(SCM_NIMP(o) && SCM_VECTORP(o), o, SCM_ARG1, s_symbol_set_x); | |
657 | vcell = scm_sym2ovcell (s, o); | |
658 | SCM_CDR(vcell) = v; | |
659 | return SCM_UNSPECIFIED; | |
660 | } | |
661 | ||
662 | static void | |
663 | msymbolize (s) | |
664 | SCM s; | |
665 | { | |
666 | SCM string; | |
667 | string = scm_makfromstr (SCM_CHARS (s), SCM_LENGTH (s), SCM_SYMBOL_SLOTS); | |
668 | SCM_SETCHARS (s, SCM_CHARS (string)); | |
669 | SCM_SETLENGTH (s, SCM_LENGTH (s), scm_tc7_msymbol); | |
670 | SCM_SYMBOL_MULTI_BYTE_SCM_STRINGP (s) = SCM_BOOL_F; | |
671 | SCM_CDR (string) = SCM_EOL; | |
672 | SCM_CAR (string) = SCM_EOL; | |
673 | } | |
674 | ||
675 | ||
676 | SCM_PROC(s_symbol_fref, "symbol-fref", 1, 0, 0, scm_symbol_fref); | |
677 | #ifdef __STDC__ | |
678 | SCM | |
679 | scm_symbol_fref (SCM s) | |
680 | #else | |
681 | SCM | |
682 | scm_symbol_fref (s) | |
683 | SCM s; | |
684 | #endif | |
685 | { | |
686 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG1, s_symbol_fref); | |
687 | SCM_DEFER_INTS; | |
688 | if (SCM_TYP7(s) == scm_tc7_ssymbol) | |
689 | msymbolize (s); | |
690 | SCM_ALLOW_INTS; | |
691 | return SCM_SYMBOL_FUNC (s); | |
692 | } | |
693 | ||
694 | ||
695 | SCM_PROC(s_symbol_pref, "symbol-pref", 1, 0, 0, scm_symbol_pref); | |
696 | #ifdef __STDC__ | |
697 | SCM | |
698 | scm_symbol_pref (SCM s) | |
699 | #else | |
700 | SCM | |
701 | scm_symbol_pref (s) | |
702 | SCM s; | |
703 | #endif | |
704 | { | |
705 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG1, s_symbol_pref); | |
706 | SCM_DEFER_INTS; | |
707 | if (SCM_TYP7(s) == scm_tc7_ssymbol) | |
708 | msymbolize (s); | |
709 | SCM_ALLOW_INTS; | |
710 | return SCM_SYMBOL_PROPS (s); | |
711 | } | |
712 | ||
713 | ||
714 | SCM_PROC(s_symbol_fset_x, "symbol-fset!", 2, 0, 0, scm_symbol_fset_x); | |
715 | #ifdef __STDC__ | |
716 | SCM | |
717 | scm_symbol_fset_x (SCM s, SCM val) | |
718 | #else | |
719 | SCM | |
720 | scm_symbol_fset_x (s, val) | |
721 | SCM s; | |
722 | SCM val; | |
723 | #endif | |
724 | { | |
725 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG1, s_symbol_fset_x); | |
726 | SCM_DEFER_INTS; | |
727 | if (SCM_TYP7(s) == scm_tc7_ssymbol) | |
728 | msymbolize (s); | |
729 | SCM_ALLOW_INTS; | |
730 | SCM_SYMBOL_FUNC (s) = val; | |
731 | return SCM_UNSPECIFIED; | |
732 | } | |
733 | ||
734 | ||
735 | SCM_PROC(s_symbol_pset_x, "symbol-pset!", 2, 0, 0, scm_symbol_pset_x); | |
736 | #ifdef __STDC__ | |
737 | SCM | |
738 | scm_symbol_pset_x (SCM s, SCM val) | |
739 | #else | |
740 | SCM | |
741 | scm_symbol_pset_x (s, val) | |
742 | SCM s; | |
743 | SCM val; | |
744 | #endif | |
745 | { | |
746 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG1, s_symbol_pset_x); | |
747 | SCM_DEFER_INTS; | |
748 | if (SCM_TYP7(s) == scm_tc7_ssymbol) | |
749 | msymbolize (s); | |
750 | SCM_SYMBOL_PROPS (s) = val; | |
751 | SCM_ALLOW_INTS; | |
752 | return SCM_UNSPECIFIED; | |
753 | } | |
754 | ||
755 | ||
756 | SCM_PROC(s_symbol_hash, "symbol-hash", 1, 0, 0, scm_symbol_hash); | |
757 | #ifdef __STDC__ | |
758 | SCM | |
759 | scm_symbol_hash (SCM s) | |
760 | #else | |
761 | SCM | |
762 | scm_symbol_hash (s) | |
763 | SCM s; | |
764 | #endif | |
765 | { | |
766 | SCM_ASSERT(SCM_NIMP(s) && SCM_SYMBOLP(s), s, SCM_ARG1, s_symbol_hash); | |
767 | return SCM_MAKINUM ((unsigned long)s ^ SCM_SYMBOL_HASH (s)); | |
768 | } | |
769 | ||
770 | ||
771 | #ifdef __STDC__ | |
772 | void | |
773 | scm_init_symbols (void) | |
774 | #else | |
775 | void | |
776 | scm_init_symbols () | |
777 | #endif | |
778 | { | |
779 | #include "symbols.x" | |
780 | } | |
781 |