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ceed7709 | 1 | /* Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2003, 2004, |
8c76a897 | 2 | * 2006, 2009, 2011, 2013 Free Software Foundation, Inc. |
ceed7709 | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
0f2d19dd | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
0f2d19dd | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
1bbd0b84 | 20 | |
0f2d19dd | 21 | \f |
dbb605f5 | 22 | #ifdef HAVE_CONFIG_H |
cf007485 RB |
23 | # include <config.h> |
24 | #endif | |
0f2d19dd | 25 | |
f80d15c5 AW |
26 | #include <unistr.h> |
27 | ||
a0599745 MD |
28 | #include "libguile/_scm.h" |
29 | #include "libguile/chars.h" | |
30 | #include "libguile/eval.h" | |
ba393257 | 31 | #include "libguile/hash.h" |
fb43bf74 | 32 | #include "libguile/smob.h" |
a0599745 MD |
33 | #include "libguile/variable.h" |
34 | #include "libguile/alist.h" | |
7e73eaee | 35 | #include "libguile/fluids.h" |
a0599745 MD |
36 | #include "libguile/strings.h" |
37 | #include "libguile/vectors.h" | |
7887be7d | 38 | #include "libguile/weak-set.h" |
eb8db440 | 39 | #include "libguile/modules.h" |
1206efbe MV |
40 | #include "libguile/read.h" |
41 | #include "libguile/srfi-13.h" | |
a0599745 MD |
42 | |
43 | #include "libguile/validate.h" | |
44 | #include "libguile/symbols.h" | |
0f2d19dd | 45 | |
22fc179a HWN |
46 | #include "libguile/private-options.h" |
47 | ||
48 | ||
95b88819 GH |
49 | #ifdef HAVE_STRING_H |
50 | #include <string.h> | |
51 | #endif | |
52 | ||
0f2d19dd JB |
53 | \f |
54 | ||
0f979f3f DH |
55 | static SCM symbols; |
56 | ||
a4c91488 MD |
57 | #ifdef GUILE_DEBUG |
58 | SCM_DEFINE (scm_sys_symbols, "%symbols", 0, 0, 0, | |
59 | (), | |
60 | "Return the system symbol obarray.") | |
61 | #define FUNC_NAME s_scm_sys_symbols | |
62 | { | |
63 | return symbols; | |
64 | } | |
65 | #undef FUNC_NAME | |
66 | #endif | |
67 | ||
0f979f3f DH |
68 | \f |
69 | ||
0f2d19dd JB |
70 | /* {Symbols} |
71 | */ | |
72 | ||
c35738c1 MD |
73 | unsigned long |
74 | scm_i_hash_symbol (SCM obj, unsigned long n, void *closure) | |
75 | { | |
3ee86942 | 76 | return scm_i_symbol_hash (obj) % n; |
c35738c1 | 77 | } |
1cc91f1b | 78 | |
e0c83bf5 AW |
79 | struct string_lookup_data |
80 | { | |
17072fd2 | 81 | SCM string; |
e0c83bf5 AW |
82 | unsigned long string_hash; |
83 | }; | |
84 | ||
17072fd2 AW |
85 | static int |
86 | string_lookup_predicate_fn (SCM sym, void *closure) | |
e0c83bf5 AW |
87 | { |
88 | struct string_lookup_data *data = closure; | |
89 | ||
17072fd2 AW |
90 | if (scm_i_symbol_hash (sym) == data->string_hash |
91 | && scm_i_symbol_length (sym) == scm_i_string_length (data->string)) | |
fd0a5bbc | 92 | { |
17072fd2 AW |
93 | size_t n = scm_i_symbol_length (sym); |
94 | while (n--) | |
95 | if (scm_i_symbol_ref (sym, n) != scm_i_string_ref (data->string, n)) | |
96 | return 0; | |
97 | return 1; | |
fd0a5bbc | 98 | } |
17072fd2 AW |
99 | else |
100 | return 0; | |
e0c83bf5 | 101 | } |
488b10b5 | 102 | |
e0c83bf5 AW |
103 | static SCM |
104 | lookup_interned_symbol (SCM name, unsigned long raw_hash) | |
105 | { | |
106 | struct string_lookup_data data; | |
e0c83bf5 | 107 | |
17072fd2 | 108 | data.string = name; |
e0c83bf5 AW |
109 | data.string_hash = raw_hash; |
110 | ||
7887be7d AW |
111 | return scm_c_weak_set_lookup (symbols, raw_hash, |
112 | string_lookup_predicate_fn, | |
113 | &data, SCM_BOOL_F); | |
fd0a5bbc | 114 | } |
3ee86942 | 115 | |
30c282bf AW |
116 | struct latin1_lookup_data |
117 | { | |
118 | const char *str; | |
119 | size_t len; | |
120 | unsigned long string_hash; | |
121 | }; | |
122 | ||
123 | static int | |
124 | latin1_lookup_predicate_fn (SCM sym, void *closure) | |
125 | { | |
126 | struct latin1_lookup_data *data = closure; | |
127 | ||
128 | return scm_i_symbol_hash (sym) == data->string_hash | |
129 | && scm_i_is_narrow_symbol (sym) | |
130 | && scm_i_symbol_length (sym) == data->len | |
131 | && strncmp (scm_i_symbol_chars (sym), data->str, data->len) == 0; | |
132 | } | |
133 | ||
134 | static SCM | |
135 | lookup_interned_latin1_symbol (const char *str, size_t len, | |
136 | unsigned long raw_hash) | |
137 | { | |
138 | struct latin1_lookup_data data; | |
30c282bf AW |
139 | |
140 | data.str = str; | |
141 | data.len = len; | |
142 | data.string_hash = raw_hash; | |
143 | ||
7887be7d AW |
144 | return scm_c_weak_set_lookup (symbols, raw_hash, |
145 | latin1_lookup_predicate_fn, | |
146 | &data, SCM_BOOL_F); | |
30c282bf AW |
147 | } |
148 | ||
f80d15c5 AW |
149 | struct utf8_lookup_data |
150 | { | |
151 | const char *str; | |
152 | size_t len; | |
153 | unsigned long string_hash; | |
154 | }; | |
155 | ||
156 | static int | |
157 | utf8_string_equals_wide_string (const scm_t_uint8 *narrow, size_t nlen, | |
158 | const scm_t_wchar *wide, size_t wlen) | |
159 | { | |
160 | size_t byte_idx = 0, char_idx = 0; | |
161 | ||
162 | while (byte_idx < nlen && char_idx < wlen) | |
163 | { | |
164 | ucs4_t c; | |
165 | int nbytes; | |
166 | ||
167 | nbytes = u8_mbtouc (&c, narrow + byte_idx, nlen - byte_idx); | |
168 | if (nbytes == 0) | |
169 | break; | |
8c76a897 | 170 | else if (c == 0xfffd) |
f80d15c5 AW |
171 | /* Bad UTF-8. */ |
172 | return 0; | |
173 | else if (c != wide[char_idx]) | |
174 | return 0; | |
175 | ||
176 | byte_idx += nbytes; | |
177 | char_idx++; | |
178 | } | |
179 | ||
180 | return byte_idx == nlen && char_idx == wlen; | |
181 | } | |
182 | ||
183 | static int | |
184 | utf8_lookup_predicate_fn (SCM sym, void *closure) | |
185 | { | |
186 | struct utf8_lookup_data *data = closure; | |
187 | ||
188 | if (scm_i_symbol_hash (sym) != data->string_hash) | |
189 | return 0; | |
190 | ||
191 | if (scm_i_is_narrow_symbol (sym)) | |
192 | return (scm_i_symbol_length (sym) == data->len | |
193 | && strncmp (scm_i_symbol_chars (sym), data->str, data->len) == 0); | |
194 | else | |
195 | return utf8_string_equals_wide_string ((const scm_t_uint8 *) data->str, | |
196 | data->len, | |
197 | scm_i_symbol_wide_chars (sym), | |
198 | scm_i_symbol_length (sym)); | |
199 | } | |
200 | ||
201 | static SCM | |
202 | lookup_interned_utf8_symbol (const char *str, size_t len, | |
203 | unsigned long raw_hash) | |
204 | { | |
205 | struct utf8_lookup_data data; | |
206 | ||
207 | data.str = str; | |
208 | data.len = len; | |
209 | data.string_hash = raw_hash; | |
210 | ||
211 | return scm_c_weak_set_lookup (symbols, raw_hash, | |
212 | utf8_lookup_predicate_fn, | |
213 | &data, SCM_BOOL_F); | |
214 | } | |
215 | ||
7887be7d AW |
216 | static int |
217 | symbol_lookup_predicate_fn (SCM sym, void *closure) | |
e0c83bf5 | 218 | { |
21041372 | 219 | SCM other = SCM_PACK_POINTER (closure); |
e0c83bf5 | 220 | |
7887be7d AW |
221 | if (scm_i_symbol_hash (sym) == scm_i_symbol_hash (other) |
222 | && scm_i_symbol_length (sym) == scm_i_symbol_length (other)) | |
e0c83bf5 | 223 | { |
7887be7d AW |
224 | if (scm_i_is_narrow_symbol (sym)) |
225 | return scm_i_is_narrow_symbol (other) | |
226 | && (strncmp (scm_i_symbol_chars (sym), | |
227 | scm_i_symbol_chars (other), | |
228 | scm_i_symbol_length (other)) == 0); | |
229 | else | |
230 | return scm_is_true | |
231 | (scm_string_equal_p (scm_symbol_to_string (sym), | |
232 | scm_symbol_to_string (other))); | |
e0c83bf5 | 233 | } |
7887be7d | 234 | return 0; |
e0c83bf5 | 235 | } |
7887be7d | 236 | |
fd0a5bbc | 237 | static SCM |
e23106d5 | 238 | scm_i_str2symbol (SCM str) |
fd0a5bbc HWN |
239 | { |
240 | SCM symbol; | |
e23106d5 | 241 | size_t raw_hash = scm_i_string_hash (str); |
b52e071b | 242 | |
e23106d5 | 243 | symbol = lookup_interned_symbol (str, raw_hash); |
e0c83bf5 AW |
244 | if (scm_is_true (symbol)) |
245 | return symbol; | |
246 | else | |
05588a1a LC |
247 | { |
248 | /* The symbol was not found, create it. */ | |
249 | symbol = scm_i_make_symbol (str, 0, raw_hash, | |
250 | scm_cons (SCM_BOOL_F, SCM_EOL)); | |
7887be7d AW |
251 | |
252 | /* Might return a different symbol, if another one was interned at | |
253 | the same time. */ | |
254 | return scm_c_weak_set_add_x (symbols, raw_hash, | |
255 | symbol_lookup_predicate_fn, | |
21041372 | 256 | SCM_UNPACK_POINTER (symbol), symbol); |
05588a1a | 257 | } |
b52e071b DH |
258 | } |
259 | ||
fd0a5bbc | 260 | |
3ee86942 | 261 | static SCM |
e23106d5 | 262 | scm_i_str2uninterned_symbol (SCM str) |
ac48757b | 263 | { |
e23106d5 | 264 | size_t raw_hash = scm_i_string_hash (str); |
3ee86942 | 265 | |
6869328b MV |
266 | return scm_i_make_symbol (str, SCM_I_F_SYMBOL_UNINTERNED, |
267 | raw_hash, scm_cons (SCM_BOOL_F, SCM_EOL)); | |
b52e071b DH |
268 | } |
269 | ||
3b3b36dd | 270 | SCM_DEFINE (scm_symbol_p, "symbol?", 1, 0, 0, |
8e93e199 | 271 | (SCM obj), |
1e6808ea MG |
272 | "Return @code{#t} if @var{obj} is a symbol, otherwise return\n" |
273 | "@code{#f}.") | |
1bbd0b84 | 274 | #define FUNC_NAME s_scm_symbol_p |
0f2d19dd | 275 | { |
3ee86942 | 276 | return scm_from_bool (scm_is_symbol (obj)); |
0f2d19dd | 277 | } |
1bbd0b84 | 278 | #undef FUNC_NAME |
0f2d19dd | 279 | |
ac48757b MV |
280 | SCM_DEFINE (scm_symbol_interned_p, "symbol-interned?", 1, 0, 0, |
281 | (SCM symbol), | |
282 | "Return @code{#t} if @var{symbol} is interned, otherwise return\n" | |
283 | "@code{#f}.") | |
284 | #define FUNC_NAME s_scm_symbol_interned_p | |
285 | { | |
286 | SCM_VALIDATE_SYMBOL (1, symbol); | |
3ee86942 | 287 | return scm_from_bool (scm_i_symbol_is_interned (symbol)); |
ac48757b MV |
288 | } |
289 | #undef FUNC_NAME | |
290 | ||
291 | SCM_DEFINE (scm_make_symbol, "make-symbol", 1, 0, 0, | |
292 | (SCM name), | |
293 | "Return a new uninterned symbol with the name @var{name}. " | |
294 | "The returned symbol is guaranteed to be unique and future " | |
d58d5bfc | 295 | "calls to @code{string->symbol} will not return it.") |
ac48757b MV |
296 | #define FUNC_NAME s_scm_make_symbol |
297 | { | |
ac48757b | 298 | SCM_VALIDATE_STRING (1, name); |
e23106d5 | 299 | return scm_i_str2uninterned_symbol (name); |
ac48757b MV |
300 | } |
301 | #undef FUNC_NAME | |
302 | ||
3b3b36dd | 303 | SCM_DEFINE (scm_symbol_to_string, "symbol->string", 1, 0, 0, |
1bbd0b84 | 304 | (SCM s), |
1e6808ea MG |
305 | "Return the name of @var{symbol} as a string. If the symbol was\n" |
306 | "part of an object returned as the value of a literal expression\n" | |
7a095584 | 307 | "(section @pxref{Literal expressions,,,r5rs, The Revised^5\n" |
1e6808ea MG |
308 | "Report on Scheme}) or by a call to the @code{read} procedure,\n" |
309 | "and its name contains alphabetic characters, then the string\n" | |
310 | "returned will contain characters in the implementation's\n" | |
311 | "preferred standard case---some implementations will prefer\n" | |
312 | "upper case, others lower case. If the symbol was returned by\n" | |
313 | "@code{string->symbol}, the case of characters in the string\n" | |
314 | "returned will be the same as the case in the string that was\n" | |
315 | "passed to @code{string->symbol}. It is an error to apply\n" | |
316 | "mutation procedures like @code{string-set!} to strings returned\n" | |
317 | "by this procedure.\n" | |
318 | "\n" | |
942e5b91 | 319 | "The following examples assume that the implementation's\n" |
1e6808ea MG |
320 | "standard case is lower case:\n" |
321 | "\n" | |
942e5b91 | 322 | "@lisp\n" |
1e6808ea MG |
323 | "(symbol->string 'flying-fish) @result{} \"flying-fish\"\n" |
324 | "(symbol->string 'Martin) @result{} \"martin\"\n" | |
5ffe9968 | 325 | "(symbol->string\n" |
942e5b91 MG |
326 | " (string->symbol \"Malvina\")) @result{} \"Malvina\"\n" |
327 | "@end lisp") | |
1bbd0b84 | 328 | #define FUNC_NAME s_scm_symbol_to_string |
0f2d19dd | 329 | { |
28b06554 | 330 | SCM_VALIDATE_SYMBOL (1, s); |
3ee86942 | 331 | return scm_i_symbol_substring (s, 0, scm_i_symbol_length (s)); |
0f2d19dd | 332 | } |
1bbd0b84 | 333 | #undef FUNC_NAME |
0f2d19dd JB |
334 | |
335 | ||
3b3b36dd | 336 | SCM_DEFINE (scm_string_to_symbol, "string->symbol", 1, 0, 0, |
1e6808ea MG |
337 | (SCM string), |
338 | "Return the symbol whose name is @var{string}. This procedure\n" | |
942e5b91 MG |
339 | "can create symbols with names containing special characters or\n" |
340 | "letters in the non-standard case, but it is usually a bad idea\n" | |
1e6808ea MG |
341 | "to create such symbols because in some implementations of\n" |
342 | "Scheme they cannot be read as themselves. See\n" | |
343 | "@code{symbol->string}.\n" | |
344 | "\n" | |
942e5b91 | 345 | "The following examples assume that the implementation's\n" |
1e6808ea MG |
346 | "standard case is lower case:\n" |
347 | "\n" | |
942e5b91 MG |
348 | "@lisp\n" |
349 | "(eq? 'mISSISSIppi 'mississippi) @result{} #t\n" | |
350 | "(string->symbol \"mISSISSIppi\") @result{} @r{the symbol with name \"mISSISSIppi\"}\n" | |
351 | "(eq? 'bitBlt (string->symbol \"bitBlt\")) @result{} #f\n" | |
352 | "(eq? 'JollyWog\n" | |
353 | " (string->symbol (symbol->string 'JollyWog))) @result{} #t\n" | |
354 | "(string=? \"K. Harper, M.D.\"\n" | |
355 | " (symbol->string\n" | |
356 | " (string->symbol \"K. Harper, M.D.\"))) @result{}#t\n" | |
357 | "@end lisp") | |
1bbd0b84 | 358 | #define FUNC_NAME s_scm_string_to_symbol |
0f2d19dd | 359 | { |
1e6808ea | 360 | SCM_VALIDATE_STRING (1, string); |
e23106d5 | 361 | return scm_i_str2symbol (string); |
0f2d19dd | 362 | } |
1bbd0b84 | 363 | #undef FUNC_NAME |
0f2d19dd | 364 | |
1206efbe MV |
365 | SCM_DEFINE (scm_string_ci_to_symbol, "string-ci->symbol", 1, 0, 0, |
366 | (SCM str), | |
367 | "Return the symbol whose name is @var{str}. @var{str} is\n" | |
368 | "converted to lowercase before the conversion is done, if Guile\n" | |
369 | "is currently reading symbols case-insensitively.") | |
370 | #define FUNC_NAME s_scm_string_ci_to_symbol | |
371 | { | |
372 | return scm_string_to_symbol (SCM_CASE_INSENSITIVE_P | |
373 | ? scm_string_downcase(str) | |
374 | : str); | |
375 | } | |
376 | #undef FUNC_NAME | |
377 | ||
ceed7709 LC |
378 | /* The default prefix for `gensym'd symbols. */ |
379 | static SCM default_gensym_prefix; | |
380 | ||
4496c9c1 | 381 | #define MAX_PREFIX_LENGTH 30 |
0f2d19dd | 382 | |
86d31dfe MV |
383 | SCM_DEFINE (scm_gensym, "gensym", 0, 1, 0, |
384 | (SCM prefix), | |
385 | "Create a new symbol with a name constructed from a prefix and\n" | |
386 | "a counter value. The string @var{prefix} can be specified as\n" | |
68dc153d | 387 | "an optional argument. Default prefix is @code{ g}. The counter\n" |
86d31dfe MV |
388 | "is increased by 1 at each call. There is no provision for\n" |
389 | "resetting the counter.") | |
390 | #define FUNC_NAME s_scm_gensym | |
0f2d19dd | 391 | { |
4496c9c1 AW |
392 | static int gensym_counter = 0; |
393 | ||
3ee86942 | 394 | SCM suffix, name; |
4496c9c1 AW |
395 | int n, n_digits; |
396 | char buf[SCM_INTBUFLEN]; | |
7426a638 | 397 | |
86d31dfe | 398 | if (SCM_UNBNDP (prefix)) |
ceed7709 LC |
399 | prefix = default_gensym_prefix; |
400 | ||
4496c9c1 AW |
401 | /* mutex in case another thread looks and incs at the exact same moment */ |
402 | scm_i_scm_pthread_mutex_lock (&scm_i_misc_mutex); | |
403 | n = gensym_counter++; | |
404 | scm_i_pthread_mutex_unlock (&scm_i_misc_mutex); | |
3ee86942 | 405 | |
4496c9c1 AW |
406 | n_digits = scm_iint2str (n, 10, buf); |
407 | suffix = scm_from_latin1_stringn (buf, n_digits); | |
3ee86942 MV |
408 | name = scm_string_append (scm_list_2 (prefix, suffix)); |
409 | return scm_string_to_symbol (name); | |
0f2d19dd | 410 | } |
1bbd0b84 | 411 | #undef FUNC_NAME |
0f2d19dd | 412 | |
86d31dfe MV |
413 | SCM_DEFINE (scm_symbol_hash, "symbol-hash", 1, 0, 0, |
414 | (SCM symbol), | |
415 | "Return a hash value for @var{symbol}.") | |
416 | #define FUNC_NAME s_scm_symbol_hash | |
0f2d19dd | 417 | { |
86d31dfe | 418 | SCM_VALIDATE_SYMBOL (1, symbol); |
3ee86942 | 419 | return scm_from_ulong (scm_i_symbol_hash (symbol)); |
0f2d19dd | 420 | } |
1bbd0b84 | 421 | #undef FUNC_NAME |
0f2d19dd | 422 | |
3b3b36dd | 423 | SCM_DEFINE (scm_symbol_fref, "symbol-fref", 1, 0, 0, |
1bbd0b84 | 424 | (SCM s), |
b7e64f8b | 425 | "Return the contents of the symbol @var{s}'s @dfn{function slot}.") |
1bbd0b84 | 426 | #define FUNC_NAME s_scm_symbol_fref |
0f2d19dd | 427 | { |
34d19ef6 | 428 | SCM_VALIDATE_SYMBOL (1, s); |
3ee86942 | 429 | return SCM_CAR (SCM_CELL_OBJECT_3 (s)); |
0f2d19dd | 430 | } |
1bbd0b84 | 431 | #undef FUNC_NAME |
0f2d19dd JB |
432 | |
433 | ||
3b3b36dd | 434 | SCM_DEFINE (scm_symbol_pref, "symbol-pref", 1, 0, 0, |
1bbd0b84 | 435 | (SCM s), |
b7e64f8b BT |
436 | "Return the @dfn{property list} currently associated with the\n" |
437 | "symbol @var{s}.") | |
1bbd0b84 | 438 | #define FUNC_NAME s_scm_symbol_pref |
0f2d19dd | 439 | { |
34d19ef6 | 440 | SCM_VALIDATE_SYMBOL (1, s); |
3ee86942 | 441 | return SCM_CDR (SCM_CELL_OBJECT_3 (s)); |
0f2d19dd | 442 | } |
1bbd0b84 | 443 | #undef FUNC_NAME |
0f2d19dd JB |
444 | |
445 | ||
3b3b36dd | 446 | SCM_DEFINE (scm_symbol_fset_x, "symbol-fset!", 2, 0, 0, |
1bbd0b84 | 447 | (SCM s, SCM val), |
b7e64f8b | 448 | "Change the binding of the symbol @var{s}'s function slot.") |
1bbd0b84 | 449 | #define FUNC_NAME s_scm_symbol_fset_x |
0f2d19dd | 450 | { |
34d19ef6 | 451 | SCM_VALIDATE_SYMBOL (1, s); |
3ee86942 | 452 | SCM_SETCAR (SCM_CELL_OBJECT_3 (s), val); |
0f2d19dd JB |
453 | return SCM_UNSPECIFIED; |
454 | } | |
1bbd0b84 | 455 | #undef FUNC_NAME |
0f2d19dd JB |
456 | |
457 | ||
3b3b36dd | 458 | SCM_DEFINE (scm_symbol_pset_x, "symbol-pset!", 2, 0, 0, |
1bbd0b84 | 459 | (SCM s, SCM val), |
b7e64f8b | 460 | "Change the binding of the symbol @var{s}'s property slot.") |
1bbd0b84 | 461 | #define FUNC_NAME s_scm_symbol_pset_x |
0f2d19dd | 462 | { |
34d19ef6 | 463 | SCM_VALIDATE_SYMBOL (1, s); |
3ee86942 | 464 | SCM_SETCDR (SCM_CELL_OBJECT_3 (s), val); |
0f2d19dd JB |
465 | return SCM_UNSPECIFIED; |
466 | } | |
1bbd0b84 | 467 | #undef FUNC_NAME |
0f2d19dd | 468 | |
3ee86942 MV |
469 | SCM |
470 | scm_from_locale_symbol (const char *sym) | |
af68e5e5 | 471 | { |
e23106d5 | 472 | return scm_from_locale_symboln (sym, -1); |
af68e5e5 | 473 | } |
af68e5e5 | 474 | |
3ee86942 MV |
475 | SCM |
476 | scm_from_locale_symboln (const char *sym, size_t len) | |
477 | { | |
e23106d5 MG |
478 | SCM str = scm_from_locale_stringn (sym, len); |
479 | return scm_i_str2symbol (str); | |
fd0a5bbc HWN |
480 | } |
481 | ||
482 | SCM | |
483 | scm_take_locale_symboln (char *sym, size_t len) | |
484 | { | |
e23106d5 | 485 | SCM str; |
fd0a5bbc | 486 | |
e23106d5 MG |
487 | str = scm_take_locale_stringn (sym, len); |
488 | return scm_i_str2symbol (str); | |
fd0a5bbc HWN |
489 | } |
490 | ||
491 | SCM | |
492 | scm_take_locale_symbol (char *sym) | |
493 | { | |
494 | return scm_take_locale_symboln (sym, (size_t)-1); | |
3ee86942 | 495 | } |
af68e5e5 | 496 | |
ad5cbc47 AW |
497 | SCM |
498 | scm_from_latin1_symbol (const char *sym) | |
499 | { | |
500 | return scm_from_latin1_symboln (sym, -1); | |
501 | } | |
502 | ||
503 | SCM | |
504 | scm_from_latin1_symboln (const char *sym, size_t len) | |
505 | { | |
30c282bf AW |
506 | unsigned long hash; |
507 | SCM ret; | |
508 | ||
509 | if (len == (size_t) -1) | |
510 | len = strlen (sym); | |
511 | hash = scm_i_latin1_string_hash (sym, len); | |
512 | ||
513 | ret = lookup_interned_latin1_symbol (sym, len, hash); | |
514 | if (scm_is_false (ret)) | |
515 | { | |
516 | SCM str = scm_from_latin1_stringn (sym, len); | |
517 | ret = scm_i_str2symbol (str); | |
518 | } | |
519 | ||
520 | return ret; | |
ad5cbc47 AW |
521 | } |
522 | ||
523 | SCM | |
524 | scm_from_utf8_symbol (const char *sym) | |
525 | { | |
526 | return scm_from_utf8_symboln (sym, -1); | |
527 | } | |
528 | ||
529 | SCM | |
530 | scm_from_utf8_symboln (const char *sym, size_t len) | |
531 | { | |
f80d15c5 AW |
532 | unsigned long hash; |
533 | SCM ret; | |
534 | ||
535 | if (len == (size_t) -1) | |
536 | len = strlen (sym); | |
537 | hash = scm_i_utf8_string_hash (sym, len); | |
538 | ||
539 | ret = lookup_interned_utf8_symbol (sym, len, hash); | |
540 | if (scm_is_false (ret)) | |
541 | { | |
542 | SCM str = scm_from_utf8_stringn (sym, len); | |
543 | ret = scm_i_str2symbol (str); | |
544 | } | |
545 | ||
546 | return ret; | |
ad5cbc47 AW |
547 | } |
548 | ||
0f979f3f DH |
549 | void |
550 | scm_symbols_prehistory () | |
551 | { | |
7887be7d | 552 | symbols = scm_c_make_weak_set (5000); |
0f979f3f DH |
553 | } |
554 | ||
555 | ||
0f2d19dd JB |
556 | void |
557 | scm_init_symbols () | |
0f2d19dd | 558 | { |
a0599745 | 559 | #include "libguile/symbols.x" |
ceed7709 LC |
560 | |
561 | default_gensym_prefix = scm_from_latin1_string (" g"); | |
0f2d19dd | 562 | } |
89e00824 ML |
563 | |
564 | /* | |
565 | Local Variables: | |
566 | c-file-style: "gnu" | |
567 | End: | |
568 | */ |