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7b863bd5 | 1 | /* Random utility Lisp functions. |
f8c25f1b | 2 | Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc. |
7b863bd5 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4ff1aed9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
7b863bd5 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
7b863bd5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
7b863bd5 | 23 | |
7b863bd5 JB |
24 | /* Note on some machines this defines `vector' as a typedef, |
25 | so make sure we don't use that name in this file. */ | |
26 | #undef vector | |
27 | #define vector ***** | |
28 | ||
7b863bd5 JB |
29 | #include "lisp.h" |
30 | #include "commands.h" | |
31 | ||
7b863bd5 | 32 | #include "buffer.h" |
f812877e | 33 | #include "keyboard.h" |
ac811a55 | 34 | #include "intervals.h" |
7b863bd5 | 35 | |
bc937db7 KH |
36 | #ifndef NULL |
37 | #define NULL (void *)0 | |
38 | #endif | |
39 | ||
9309fdb1 KH |
40 | extern Lisp_Object Flookup_key (); |
41 | ||
68732608 | 42 | Lisp_Object Qstring_lessp, Qprovide, Qrequire; |
0ce830bc | 43 | Lisp_Object Qyes_or_no_p_history; |
eb4ffa4e | 44 | Lisp_Object Qcursor_in_echo_area; |
7b863bd5 | 45 | |
6cb9cafb | 46 | static int internal_equal (); |
e0f5cf5a | 47 | \f |
7b863bd5 JB |
48 | DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0, |
49 | "Return the argument unchanged.") | |
50 | (arg) | |
51 | Lisp_Object arg; | |
52 | { | |
53 | return arg; | |
54 | } | |
55 | ||
99175c23 KH |
56 | extern long get_random (); |
57 | extern void seed_random (); | |
58 | extern long time (); | |
59 | ||
7b863bd5 JB |
60 | DEFUN ("random", Frandom, Srandom, 0, 1, 0, |
61 | "Return a pseudo-random number.\n\ | |
4cab5074 KH |
62 | All integers representable in Lisp are equally likely.\n\ |
63 | On most systems, this is 28 bits' worth.\n\ | |
99175c23 | 64 | With positive integer argument N, return random number in interval [0,N).\n\ |
7b863bd5 | 65 | With argument t, set the random number seed from the current time and pid.") |
88fe8140 EN |
66 | (n) |
67 | Lisp_Object n; | |
7b863bd5 | 68 | { |
e2d6972a KH |
69 | EMACS_INT val; |
70 | Lisp_Object lispy_val; | |
78217ef1 | 71 | unsigned long denominator; |
7b863bd5 | 72 | |
88fe8140 | 73 | if (EQ (n, Qt)) |
e2d6972a | 74 | seed_random (getpid () + time (NULL)); |
88fe8140 | 75 | if (NATNUMP (n) && XFASTINT (n) != 0) |
7b863bd5 | 76 | { |
4cab5074 KH |
77 | /* Try to take our random number from the higher bits of VAL, |
78 | not the lower, since (says Gentzel) the low bits of `random' | |
79 | are less random than the higher ones. We do this by using the | |
80 | quotient rather than the remainder. At the high end of the RNG | |
88fe8140 | 81 | it's possible to get a quotient larger than n; discarding |
4cab5074 | 82 | these values eliminates the bias that would otherwise appear |
88fe8140 EN |
83 | when using a large n. */ |
84 | denominator = ((unsigned long)1 << VALBITS) / XFASTINT (n); | |
4cab5074 | 85 | do |
99175c23 | 86 | val = get_random () / denominator; |
88fe8140 | 87 | while (val >= XFASTINT (n)); |
7b863bd5 | 88 | } |
78217ef1 | 89 | else |
99175c23 | 90 | val = get_random (); |
e2d6972a KH |
91 | XSETINT (lispy_val, val); |
92 | return lispy_val; | |
7b863bd5 JB |
93 | } |
94 | \f | |
95 | /* Random data-structure functions */ | |
96 | ||
97 | DEFUN ("length", Flength, Slength, 1, 1, 0, | |
98 | "Return the length of vector, list or string SEQUENCE.\n\ | |
99 | A byte-code function object is also allowed.") | |
88fe8140 EN |
100 | (sequence) |
101 | register Lisp_Object sequence; | |
7b863bd5 JB |
102 | { |
103 | register Lisp_Object tail, val; | |
104 | register int i; | |
105 | ||
106 | retry: | |
88fe8140 EN |
107 | if (STRINGP (sequence)) |
108 | XSETFASTINT (val, XSTRING (sequence)->size); | |
109 | else if (VECTORP (sequence)) | |
110 | XSETFASTINT (val, XVECTOR (sequence)->size); | |
111 | else if (CHAR_TABLE_P (sequence)) | |
e03f7933 | 112 | XSETFASTINT (val, CHAR_TABLE_ORDINARY_SLOTS); |
88fe8140 EN |
113 | else if (BOOL_VECTOR_P (sequence)) |
114 | XSETFASTINT (val, XBOOL_VECTOR (sequence)->size); | |
115 | else if (COMPILEDP (sequence)) | |
116 | XSETFASTINT (val, XVECTOR (sequence)->size & PSEUDOVECTOR_SIZE_MASK); | |
117 | else if (CONSP (sequence)) | |
7b863bd5 | 118 | { |
88fe8140 | 119 | for (i = 0, tail = sequence; !NILP (tail); i++) |
7b863bd5 JB |
120 | { |
121 | QUIT; | |
122 | tail = Fcdr (tail); | |
123 | } | |
124 | ||
ad17573a | 125 | XSETFASTINT (val, i); |
7b863bd5 | 126 | } |
88fe8140 | 127 | else if (NILP (sequence)) |
a2ad3e19 | 128 | XSETFASTINT (val, 0); |
7b863bd5 JB |
129 | else |
130 | { | |
88fe8140 | 131 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
132 | goto retry; |
133 | } | |
a2ad3e19 | 134 | return val; |
7b863bd5 JB |
135 | } |
136 | ||
5a30fab8 RS |
137 | /* This does not check for quits. That is safe |
138 | since it must terminate. */ | |
139 | ||
140 | DEFUN ("safe-length", Fsafe_length, Ssafe_length, 1, 1, 0, | |
141 | "Return the length of a list, but avoid error or infinite loop.\n\ | |
142 | This function never gets an error. If LIST is not really a list,\n\ | |
143 | it returns 0. If LIST is circular, it returns a finite value\n\ | |
144 | which is at least the number of distinct elements.") | |
145 | (list) | |
146 | Lisp_Object list; | |
147 | { | |
148 | Lisp_Object tail, halftail, length; | |
149 | int len = 0; | |
150 | ||
151 | /* halftail is used to detect circular lists. */ | |
152 | halftail = list; | |
153 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
154 | { | |
155 | if (EQ (tail, halftail) && len != 0) | |
cb3d1a0a | 156 | break; |
5a30fab8 | 157 | len++; |
3a61aeb4 | 158 | if ((len & 1) == 0) |
5a30fab8 RS |
159 | halftail = XCONS (halftail)->cdr; |
160 | } | |
161 | ||
162 | XSETINT (length, len); | |
163 | return length; | |
164 | } | |
165 | ||
7b863bd5 JB |
166 | DEFUN ("string-equal", Fstring_equal, Sstring_equal, 2, 2, 0, |
167 | "T if two strings have identical contents.\n\ | |
76d0f732 | 168 | Case is significant, but text properties are ignored.\n\ |
7b863bd5 JB |
169 | Symbols are also allowed; their print names are used instead.") |
170 | (s1, s2) | |
171 | register Lisp_Object s1, s2; | |
172 | { | |
7650760e | 173 | if (SYMBOLP (s1)) |
b2791413 | 174 | XSETSTRING (s1, XSYMBOL (s1)->name); |
7650760e | 175 | if (SYMBOLP (s2)) |
b2791413 | 176 | XSETSTRING (s2, XSYMBOL (s2)->name); |
7b863bd5 JB |
177 | CHECK_STRING (s1, 0); |
178 | CHECK_STRING (s2, 1); | |
179 | ||
180 | if (XSTRING (s1)->size != XSTRING (s2)->size || | |
181 | bcmp (XSTRING (s1)->data, XSTRING (s2)->data, XSTRING (s1)->size)) | |
182 | return Qnil; | |
183 | return Qt; | |
184 | } | |
185 | ||
186 | DEFUN ("string-lessp", Fstring_lessp, Sstring_lessp, 2, 2, 0, | |
187 | "T if first arg string is less than second in lexicographic order.\n\ | |
188 | Case is significant.\n\ | |
189 | Symbols are also allowed; their print names are used instead.") | |
190 | (s1, s2) | |
191 | register Lisp_Object s1, s2; | |
192 | { | |
193 | register int i; | |
194 | register unsigned char *p1, *p2; | |
195 | register int end; | |
196 | ||
7650760e | 197 | if (SYMBOLP (s1)) |
b2791413 | 198 | XSETSTRING (s1, XSYMBOL (s1)->name); |
7650760e | 199 | if (SYMBOLP (s2)) |
b2791413 | 200 | XSETSTRING (s2, XSYMBOL (s2)->name); |
7b863bd5 JB |
201 | CHECK_STRING (s1, 0); |
202 | CHECK_STRING (s2, 1); | |
203 | ||
204 | p1 = XSTRING (s1)->data; | |
205 | p2 = XSTRING (s2)->data; | |
206 | end = XSTRING (s1)->size; | |
207 | if (end > XSTRING (s2)->size) | |
208 | end = XSTRING (s2)->size; | |
209 | ||
210 | for (i = 0; i < end; i++) | |
211 | { | |
212 | if (p1[i] != p2[i]) | |
213 | return p1[i] < p2[i] ? Qt : Qnil; | |
214 | } | |
215 | return i < XSTRING (s2)->size ? Qt : Qnil; | |
216 | } | |
217 | \f | |
218 | static Lisp_Object concat (); | |
219 | ||
220 | /* ARGSUSED */ | |
221 | Lisp_Object | |
222 | concat2 (s1, s2) | |
223 | Lisp_Object s1, s2; | |
224 | { | |
225 | #ifdef NO_ARG_ARRAY | |
226 | Lisp_Object args[2]; | |
227 | args[0] = s1; | |
228 | args[1] = s2; | |
229 | return concat (2, args, Lisp_String, 0); | |
230 | #else | |
231 | return concat (2, &s1, Lisp_String, 0); | |
232 | #endif /* NO_ARG_ARRAY */ | |
233 | } | |
234 | ||
d4af3687 RS |
235 | /* ARGSUSED */ |
236 | Lisp_Object | |
237 | concat3 (s1, s2, s3) | |
238 | Lisp_Object s1, s2, s3; | |
239 | { | |
240 | #ifdef NO_ARG_ARRAY | |
241 | Lisp_Object args[3]; | |
242 | args[0] = s1; | |
243 | args[1] = s2; | |
244 | args[2] = s3; | |
245 | return concat (3, args, Lisp_String, 0); | |
246 | #else | |
247 | return concat (3, &s1, Lisp_String, 0); | |
248 | #endif /* NO_ARG_ARRAY */ | |
249 | } | |
250 | ||
7b863bd5 JB |
251 | DEFUN ("append", Fappend, Sappend, 0, MANY, 0, |
252 | "Concatenate all the arguments and make the result a list.\n\ | |
253 | The result is a list whose elements are the elements of all the arguments.\n\ | |
254 | Each argument may be a list, vector or string.\n\ | |
aec1184c | 255 | The last argument is not copied, just used as the tail of the new list.") |
7b863bd5 JB |
256 | (nargs, args) |
257 | int nargs; | |
258 | Lisp_Object *args; | |
259 | { | |
260 | return concat (nargs, args, Lisp_Cons, 1); | |
261 | } | |
262 | ||
263 | DEFUN ("concat", Fconcat, Sconcat, 0, MANY, 0, | |
264 | "Concatenate all the arguments and make the result a string.\n\ | |
265 | The result is a string whose elements are the elements of all the arguments.\n\ | |
37d40ae9 RS |
266 | Each argument may be a string or a list or vector of characters (integers).\n\ |
267 | \n\ | |
268 | Do not use individual integers as arguments!\n\ | |
269 | The behavior of `concat' in that case will be changed later!\n\ | |
270 | If your program passes an integer as an argument to `concat',\n\ | |
271 | you should change it right away not to do so.") | |
7b863bd5 JB |
272 | (nargs, args) |
273 | int nargs; | |
274 | Lisp_Object *args; | |
275 | { | |
276 | return concat (nargs, args, Lisp_String, 0); | |
277 | } | |
278 | ||
279 | DEFUN ("vconcat", Fvconcat, Svconcat, 0, MANY, 0, | |
280 | "Concatenate all the arguments and make the result a vector.\n\ | |
281 | The result is a vector whose elements are the elements of all the arguments.\n\ | |
282 | Each argument may be a list, vector or string.") | |
283 | (nargs, args) | |
284 | int nargs; | |
285 | Lisp_Object *args; | |
286 | { | |
3e7383eb | 287 | return concat (nargs, args, Lisp_Vectorlike, 0); |
7b863bd5 JB |
288 | } |
289 | ||
290 | DEFUN ("copy-sequence", Fcopy_sequence, Scopy_sequence, 1, 1, 0, | |
291 | "Return a copy of a list, vector or string.\n\ | |
292 | The elements of a list or vector are not copied; they are shared\n\ | |
293 | with the original.") | |
294 | (arg) | |
295 | Lisp_Object arg; | |
296 | { | |
265a9e55 | 297 | if (NILP (arg)) return arg; |
e03f7933 RS |
298 | |
299 | if (CHAR_TABLE_P (arg)) | |
300 | { | |
301 | int i, size; | |
302 | Lisp_Object copy; | |
303 | ||
304 | /* Calculate the number of extra slots. */ | |
305 | size = CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (arg)); | |
c8640abf | 306 | copy = Fmake_char_table (XCHAR_TABLE (arg)->purpose, Qnil); |
e03f7933 RS |
307 | /* Copy all the slots, including the extra ones. */ |
308 | bcopy (XCHAR_TABLE (arg)->contents, XCHAR_TABLE (copy)->contents, | |
309 | (XCHAR_TABLE (arg)->size & PSEUDOVECTOR_SIZE_MASK) * sizeof (Lisp_Object)); | |
310 | ||
311 | /* Recursively copy any char-tables in the ordinary slots. */ | |
312 | for (i = 0; i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
313 | if (CHAR_TABLE_P (XCHAR_TABLE (arg)->contents[i])) | |
314 | XCHAR_TABLE (copy)->contents[i] | |
315 | = Fcopy_sequence (XCHAR_TABLE (copy)->contents[i]); | |
316 | ||
317 | return copy; | |
318 | } | |
319 | ||
320 | if (BOOL_VECTOR_P (arg)) | |
321 | { | |
322 | Lisp_Object val; | |
e03f7933 | 323 | int size_in_chars |
68be917d | 324 | = (XBOOL_VECTOR (arg)->size + BITS_PER_CHAR) / BITS_PER_CHAR; |
e03f7933 RS |
325 | |
326 | val = Fmake_bool_vector (Flength (arg), Qnil); | |
327 | bcopy (XBOOL_VECTOR (arg)->data, XBOOL_VECTOR (val)->data, | |
328 | size_in_chars); | |
329 | return val; | |
330 | } | |
331 | ||
7650760e | 332 | if (!CONSP (arg) && !VECTORP (arg) && !STRINGP (arg)) |
7b863bd5 JB |
333 | arg = wrong_type_argument (Qsequencep, arg); |
334 | return concat (1, &arg, CONSP (arg) ? Lisp_Cons : XTYPE (arg), 0); | |
335 | } | |
336 | ||
337 | static Lisp_Object | |
338 | concat (nargs, args, target_type, last_special) | |
339 | int nargs; | |
340 | Lisp_Object *args; | |
341 | enum Lisp_Type target_type; | |
342 | int last_special; | |
343 | { | |
344 | Lisp_Object val; | |
345 | Lisp_Object len; | |
346 | register Lisp_Object tail; | |
347 | register Lisp_Object this; | |
348 | int toindex; | |
349 | register int leni; | |
350 | register int argnum; | |
351 | Lisp_Object last_tail; | |
352 | Lisp_Object prev; | |
353 | ||
354 | /* In append, the last arg isn't treated like the others */ | |
355 | if (last_special && nargs > 0) | |
356 | { | |
357 | nargs--; | |
358 | last_tail = args[nargs]; | |
359 | } | |
360 | else | |
361 | last_tail = Qnil; | |
362 | ||
363 | for (argnum = 0; argnum < nargs; argnum++) | |
364 | { | |
365 | this = args[argnum]; | |
7650760e | 366 | if (!(CONSP (this) || NILP (this) || VECTORP (this) || STRINGP (this) |
e03f7933 | 367 | || COMPILEDP (this) || BOOL_VECTOR_P (this))) |
7b863bd5 | 368 | { |
7650760e | 369 | if (INTEGERP (this)) |
37d40ae9 | 370 | args[argnum] = Fnumber_to_string (this); |
7b863bd5 JB |
371 | else |
372 | args[argnum] = wrong_type_argument (Qsequencep, this); | |
373 | } | |
374 | } | |
375 | ||
376 | for (argnum = 0, leni = 0; argnum < nargs; argnum++) | |
377 | { | |
378 | this = args[argnum]; | |
379 | len = Flength (this); | |
380 | leni += XFASTINT (len); | |
381 | } | |
382 | ||
ad17573a | 383 | XSETFASTINT (len, leni); |
7b863bd5 JB |
384 | |
385 | if (target_type == Lisp_Cons) | |
386 | val = Fmake_list (len, Qnil); | |
3e7383eb | 387 | else if (target_type == Lisp_Vectorlike) |
7b863bd5 JB |
388 | val = Fmake_vector (len, Qnil); |
389 | else | |
390 | val = Fmake_string (len, len); | |
391 | ||
392 | /* In append, if all but last arg are nil, return last arg */ | |
393 | if (target_type == Lisp_Cons && EQ (val, Qnil)) | |
394 | return last_tail; | |
395 | ||
396 | if (CONSP (val)) | |
397 | tail = val, toindex = -1; /* -1 in toindex is flag we are making a list */ | |
398 | else | |
399 | toindex = 0; | |
400 | ||
401 | prev = Qnil; | |
402 | ||
403 | for (argnum = 0; argnum < nargs; argnum++) | |
404 | { | |
405 | Lisp_Object thislen; | |
406 | int thisleni; | |
407 | register int thisindex = 0; | |
408 | ||
409 | this = args[argnum]; | |
410 | if (!CONSP (this)) | |
411 | thislen = Flength (this), thisleni = XINT (thislen); | |
412 | ||
7650760e | 413 | if (STRINGP (this) && STRINGP (val) |
ac811a55 JB |
414 | && ! NULL_INTERVAL_P (XSTRING (this)->intervals)) |
415 | { | |
416 | copy_text_properties (make_number (0), thislen, this, | |
417 | make_number (toindex), val, Qnil); | |
418 | } | |
419 | ||
7b863bd5 JB |
420 | while (1) |
421 | { | |
422 | register Lisp_Object elt; | |
423 | ||
ac811a55 JB |
424 | /* Fetch next element of `this' arg into `elt', or break if |
425 | `this' is exhausted. */ | |
265a9e55 | 426 | if (NILP (this)) break; |
7b863bd5 JB |
427 | if (CONSP (this)) |
428 | elt = Fcar (this), this = Fcdr (this); | |
429 | else | |
430 | { | |
431 | if (thisindex >= thisleni) break; | |
7650760e | 432 | if (STRINGP (this)) |
ad17573a | 433 | XSETFASTINT (elt, XSTRING (this)->data[thisindex++]); |
e03f7933 RS |
434 | else if (BOOL_VECTOR_P (this)) |
435 | { | |
e03f7933 | 436 | int size_in_chars |
68be917d KH |
437 | = ((XBOOL_VECTOR (this)->size + BITS_PER_CHAR) |
438 | / BITS_PER_CHAR); | |
e03f7933 | 439 | int byte; |
68be917d | 440 | byte = XBOOL_VECTOR (val)->data[thisindex / BITS_PER_CHAR]; |
e03f7933 RS |
441 | if (byte & (1 << thisindex)) |
442 | elt = Qt; | |
443 | else | |
444 | elt = Qnil; | |
445 | } | |
7b863bd5 JB |
446 | else |
447 | elt = XVECTOR (this)->contents[thisindex++]; | |
448 | } | |
449 | ||
450 | /* Store into result */ | |
451 | if (toindex < 0) | |
452 | { | |
453 | XCONS (tail)->car = elt; | |
454 | prev = tail; | |
455 | tail = XCONS (tail)->cdr; | |
456 | } | |
7650760e | 457 | else if (VECTORP (val)) |
7b863bd5 JB |
458 | XVECTOR (val)->contents[toindex++] = elt; |
459 | else | |
460 | { | |
7650760e | 461 | while (!INTEGERP (elt)) |
7b863bd5 JB |
462 | elt = wrong_type_argument (Qintegerp, elt); |
463 | { | |
464 | #ifdef MASSC_REGISTER_BUG | |
465 | /* Even removing all "register"s doesn't disable this bug! | |
466 | Nothing simpler than this seems to work. */ | |
467 | unsigned char *p = & XSTRING (val)->data[toindex++]; | |
468 | *p = XINT (elt); | |
469 | #else | |
470 | XSTRING (val)->data[toindex++] = XINT (elt); | |
471 | #endif | |
472 | } | |
473 | } | |
474 | } | |
475 | } | |
265a9e55 | 476 | if (!NILP (prev)) |
7b863bd5 JB |
477 | XCONS (prev)->cdr = last_tail; |
478 | ||
479 | return val; | |
480 | } | |
481 | \f | |
482 | DEFUN ("copy-alist", Fcopy_alist, Scopy_alist, 1, 1, 0, | |
483 | "Return a copy of ALIST.\n\ | |
484 | This is an alist which represents the same mapping from objects to objects,\n\ | |
485 | but does not share the alist structure with ALIST.\n\ | |
486 | The objects mapped (cars and cdrs of elements of the alist)\n\ | |
487 | are shared, however.\n\ | |
488 | Elements of ALIST that are not conses are also shared.") | |
489 | (alist) | |
490 | Lisp_Object alist; | |
491 | { | |
492 | register Lisp_Object tem; | |
493 | ||
494 | CHECK_LIST (alist, 0); | |
265a9e55 | 495 | if (NILP (alist)) |
7b863bd5 JB |
496 | return alist; |
497 | alist = concat (1, &alist, Lisp_Cons, 0); | |
498 | for (tem = alist; CONSP (tem); tem = XCONS (tem)->cdr) | |
499 | { | |
500 | register Lisp_Object car; | |
501 | car = XCONS (tem)->car; | |
502 | ||
503 | if (CONSP (car)) | |
504 | XCONS (tem)->car = Fcons (XCONS (car)->car, XCONS (car)->cdr); | |
505 | } | |
506 | return alist; | |
507 | } | |
508 | ||
509 | DEFUN ("substring", Fsubstring, Ssubstring, 2, 3, 0, | |
510 | "Return a substring of STRING, starting at index FROM and ending before TO.\n\ | |
511 | TO may be nil or omitted; then the substring runs to the end of STRING.\n\ | |
512 | If FROM or TO is negative, it counts from the end.") | |
513 | (string, from, to) | |
514 | Lisp_Object string; | |
515 | register Lisp_Object from, to; | |
516 | { | |
ac811a55 JB |
517 | Lisp_Object res; |
518 | ||
7b863bd5 JB |
519 | CHECK_STRING (string, 0); |
520 | CHECK_NUMBER (from, 1); | |
265a9e55 | 521 | if (NILP (to)) |
7b863bd5 JB |
522 | to = Flength (string); |
523 | else | |
524 | CHECK_NUMBER (to, 2); | |
525 | ||
526 | if (XINT (from) < 0) | |
527 | XSETINT (from, XINT (from) + XSTRING (string)->size); | |
528 | if (XINT (to) < 0) | |
529 | XSETINT (to, XINT (to) + XSTRING (string)->size); | |
530 | if (!(0 <= XINT (from) && XINT (from) <= XINT (to) | |
531 | && XINT (to) <= XSTRING (string)->size)) | |
532 | args_out_of_range_3 (string, from, to); | |
533 | ||
ac811a55 JB |
534 | res = make_string (XSTRING (string)->data + XINT (from), |
535 | XINT (to) - XINT (from)); | |
536 | copy_text_properties (from, to, string, make_number (0), res, Qnil); | |
537 | return res; | |
7b863bd5 JB |
538 | } |
539 | \f | |
540 | DEFUN ("nthcdr", Fnthcdr, Snthcdr, 2, 2, 0, | |
541 | "Take cdr N times on LIST, returns the result.") | |
542 | (n, list) | |
543 | Lisp_Object n; | |
544 | register Lisp_Object list; | |
545 | { | |
546 | register int i, num; | |
547 | CHECK_NUMBER (n, 0); | |
548 | num = XINT (n); | |
265a9e55 | 549 | for (i = 0; i < num && !NILP (list); i++) |
7b863bd5 JB |
550 | { |
551 | QUIT; | |
552 | list = Fcdr (list); | |
553 | } | |
554 | return list; | |
555 | } | |
556 | ||
557 | DEFUN ("nth", Fnth, Snth, 2, 2, 0, | |
558 | "Return the Nth element of LIST.\n\ | |
559 | N counts from zero. If LIST is not that long, nil is returned.") | |
560 | (n, list) | |
561 | Lisp_Object n, list; | |
562 | { | |
563 | return Fcar (Fnthcdr (n, list)); | |
564 | } | |
565 | ||
566 | DEFUN ("elt", Felt, Selt, 2, 2, 0, | |
567 | "Return element of SEQUENCE at index N.") | |
88fe8140 EN |
568 | (sequence, n) |
569 | register Lisp_Object sequence, n; | |
7b863bd5 JB |
570 | { |
571 | CHECK_NUMBER (n, 0); | |
572 | while (1) | |
573 | { | |
88fe8140 EN |
574 | if (CONSP (sequence) || NILP (sequence)) |
575 | return Fcar (Fnthcdr (n, sequence)); | |
576 | else if (STRINGP (sequence) || VECTORP (sequence) | |
577 | || BOOL_VECTOR_P (sequence) || CHAR_TABLE_P (sequence)) | |
578 | return Faref (sequence, n); | |
7b863bd5 | 579 | else |
88fe8140 | 580 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
581 | } |
582 | } | |
583 | ||
584 | DEFUN ("member", Fmember, Smember, 2, 2, 0, | |
1d58e36f | 585 | "Return non-nil if ELT is an element of LIST. Comparison done with `equal'.\n\ |
7b863bd5 JB |
586 | The value is actually the tail of LIST whose car is ELT.") |
587 | (elt, list) | |
588 | register Lisp_Object elt; | |
589 | Lisp_Object list; | |
590 | { | |
591 | register Lisp_Object tail; | |
265a9e55 | 592 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
7b863bd5 JB |
593 | { |
594 | register Lisp_Object tem; | |
595 | tem = Fcar (tail); | |
265a9e55 | 596 | if (! NILP (Fequal (elt, tem))) |
7b863bd5 JB |
597 | return tail; |
598 | QUIT; | |
599 | } | |
600 | return Qnil; | |
601 | } | |
602 | ||
603 | DEFUN ("memq", Fmemq, Smemq, 2, 2, 0, | |
604 | "Return non-nil if ELT is an element of LIST. Comparison done with EQ.\n\ | |
605 | The value is actually the tail of LIST whose car is ELT.") | |
606 | (elt, list) | |
607 | register Lisp_Object elt; | |
608 | Lisp_Object list; | |
609 | { | |
610 | register Lisp_Object tail; | |
265a9e55 | 611 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
7b863bd5 JB |
612 | { |
613 | register Lisp_Object tem; | |
614 | tem = Fcar (tail); | |
615 | if (EQ (elt, tem)) return tail; | |
616 | QUIT; | |
617 | } | |
618 | return Qnil; | |
619 | } | |
620 | ||
621 | DEFUN ("assq", Fassq, Sassq, 2, 2, 0, | |
3797b4c3 RS |
622 | "Return non-nil if KEY is `eq' to the car of an element of LIST.\n\ |
623 | The value is actually the element of LIST whose car is KEY.\n\ | |
7b863bd5 JB |
624 | Elements of LIST that are not conses are ignored.") |
625 | (key, list) | |
626 | register Lisp_Object key; | |
627 | Lisp_Object list; | |
628 | { | |
629 | register Lisp_Object tail; | |
265a9e55 | 630 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
7b863bd5 JB |
631 | { |
632 | register Lisp_Object elt, tem; | |
633 | elt = Fcar (tail); | |
634 | if (!CONSP (elt)) continue; | |
635 | tem = Fcar (elt); | |
636 | if (EQ (key, tem)) return elt; | |
637 | QUIT; | |
638 | } | |
639 | return Qnil; | |
640 | } | |
641 | ||
642 | /* Like Fassq but never report an error and do not allow quits. | |
643 | Use only on lists known never to be circular. */ | |
644 | ||
645 | Lisp_Object | |
646 | assq_no_quit (key, list) | |
647 | register Lisp_Object key; | |
648 | Lisp_Object list; | |
649 | { | |
650 | register Lisp_Object tail; | |
651 | for (tail = list; CONSP (tail); tail = Fcdr (tail)) | |
652 | { | |
653 | register Lisp_Object elt, tem; | |
654 | elt = Fcar (tail); | |
655 | if (!CONSP (elt)) continue; | |
656 | tem = Fcar (elt); | |
657 | if (EQ (key, tem)) return elt; | |
658 | } | |
659 | return Qnil; | |
660 | } | |
661 | ||
662 | DEFUN ("assoc", Fassoc, Sassoc, 2, 2, 0, | |
3797b4c3 | 663 | "Return non-nil if KEY is `equal' to the car of an element of LIST.\n\ |
0fb5a19c | 664 | The value is actually the element of LIST whose car equals KEY.") |
7b863bd5 JB |
665 | (key, list) |
666 | register Lisp_Object key; | |
667 | Lisp_Object list; | |
668 | { | |
669 | register Lisp_Object tail; | |
265a9e55 | 670 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
7b863bd5 JB |
671 | { |
672 | register Lisp_Object elt, tem; | |
673 | elt = Fcar (tail); | |
674 | if (!CONSP (elt)) continue; | |
675 | tem = Fequal (Fcar (elt), key); | |
265a9e55 | 676 | if (!NILP (tem)) return elt; |
7b863bd5 JB |
677 | QUIT; |
678 | } | |
679 | return Qnil; | |
680 | } | |
681 | ||
682 | DEFUN ("rassq", Frassq, Srassq, 2, 2, 0, | |
683 | "Return non-nil if ELT is `eq' to the cdr of an element of LIST.\n\ | |
684 | The value is actually the element of LIST whose cdr is ELT.") | |
685 | (key, list) | |
686 | register Lisp_Object key; | |
687 | Lisp_Object list; | |
688 | { | |
689 | register Lisp_Object tail; | |
265a9e55 | 690 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
7b863bd5 JB |
691 | { |
692 | register Lisp_Object elt, tem; | |
693 | elt = Fcar (tail); | |
694 | if (!CONSP (elt)) continue; | |
695 | tem = Fcdr (elt); | |
696 | if (EQ (key, tem)) return elt; | |
697 | QUIT; | |
698 | } | |
699 | return Qnil; | |
700 | } | |
0fb5a19c RS |
701 | |
702 | DEFUN ("rassoc", Frassoc, Srassoc, 2, 2, 0, | |
703 | "Return non-nil if KEY is `equal' to the cdr of an element of LIST.\n\ | |
704 | The value is actually the element of LIST whose cdr equals KEY.") | |
705 | (key, list) | |
706 | register Lisp_Object key; | |
707 | Lisp_Object list; | |
708 | { | |
709 | register Lisp_Object tail; | |
710 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) | |
711 | { | |
712 | register Lisp_Object elt, tem; | |
713 | elt = Fcar (tail); | |
714 | if (!CONSP (elt)) continue; | |
715 | tem = Fequal (Fcdr (elt), key); | |
716 | if (!NILP (tem)) return elt; | |
717 | QUIT; | |
718 | } | |
719 | return Qnil; | |
720 | } | |
7b863bd5 JB |
721 | \f |
722 | DEFUN ("delq", Fdelq, Sdelq, 2, 2, 0, | |
723 | "Delete by side effect any occurrences of ELT as a member of LIST.\n\ | |
724 | The modified LIST is returned. Comparison is done with `eq'.\n\ | |
725 | If the first member of LIST is ELT, there is no way to remove it by side effect;\n\ | |
726 | therefore, write `(setq foo (delq element foo))'\n\ | |
727 | to be sure of changing the value of `foo'.") | |
728 | (elt, list) | |
729 | register Lisp_Object elt; | |
730 | Lisp_Object list; | |
731 | { | |
732 | register Lisp_Object tail, prev; | |
733 | register Lisp_Object tem; | |
734 | ||
735 | tail = list; | |
736 | prev = Qnil; | |
265a9e55 | 737 | while (!NILP (tail)) |
7b863bd5 JB |
738 | { |
739 | tem = Fcar (tail); | |
740 | if (EQ (elt, tem)) | |
741 | { | |
265a9e55 | 742 | if (NILP (prev)) |
7b863bd5 JB |
743 | list = Fcdr (tail); |
744 | else | |
745 | Fsetcdr (prev, Fcdr (tail)); | |
746 | } | |
747 | else | |
748 | prev = tail; | |
749 | tail = Fcdr (tail); | |
750 | QUIT; | |
751 | } | |
752 | return list; | |
753 | } | |
754 | ||
ca8dd546 | 755 | DEFUN ("delete", Fdelete, Sdelete, 2, 2, 0, |
1e134a5f RM |
756 | "Delete by side effect any occurrences of ELT as a member of LIST.\n\ |
757 | The modified LIST is returned. Comparison is done with `equal'.\n\ | |
1d58e36f RS |
758 | If the first member of LIST is ELT, deleting it is not a side effect;\n\ |
759 | it is simply using a different list.\n\ | |
760 | Therefore, write `(setq foo (delete element foo))'\n\ | |
1e134a5f RM |
761 | to be sure of changing the value of `foo'.") |
762 | (elt, list) | |
763 | register Lisp_Object elt; | |
764 | Lisp_Object list; | |
765 | { | |
766 | register Lisp_Object tail, prev; | |
767 | register Lisp_Object tem; | |
768 | ||
769 | tail = list; | |
770 | prev = Qnil; | |
265a9e55 | 771 | while (!NILP (tail)) |
1e134a5f RM |
772 | { |
773 | tem = Fcar (tail); | |
f812877e | 774 | if (! NILP (Fequal (elt, tem))) |
1e134a5f | 775 | { |
265a9e55 | 776 | if (NILP (prev)) |
1e134a5f RM |
777 | list = Fcdr (tail); |
778 | else | |
779 | Fsetcdr (prev, Fcdr (tail)); | |
780 | } | |
781 | else | |
782 | prev = tail; | |
783 | tail = Fcdr (tail); | |
784 | QUIT; | |
785 | } | |
786 | return list; | |
787 | } | |
788 | ||
7b863bd5 JB |
789 | DEFUN ("nreverse", Fnreverse, Snreverse, 1, 1, 0, |
790 | "Reverse LIST by modifying cdr pointers.\n\ | |
791 | Returns the beginning of the reversed list.") | |
792 | (list) | |
793 | Lisp_Object list; | |
794 | { | |
795 | register Lisp_Object prev, tail, next; | |
796 | ||
265a9e55 | 797 | if (NILP (list)) return list; |
7b863bd5 JB |
798 | prev = Qnil; |
799 | tail = list; | |
265a9e55 | 800 | while (!NILP (tail)) |
7b863bd5 JB |
801 | { |
802 | QUIT; | |
803 | next = Fcdr (tail); | |
804 | Fsetcdr (tail, prev); | |
805 | prev = tail; | |
806 | tail = next; | |
807 | } | |
808 | return prev; | |
809 | } | |
810 | ||
811 | DEFUN ("reverse", Freverse, Sreverse, 1, 1, 0, | |
812 | "Reverse LIST, copying. Returns the beginning of the reversed list.\n\ | |
813 | See also the function `nreverse', which is used more often.") | |
814 | (list) | |
815 | Lisp_Object list; | |
816 | { | |
817 | Lisp_Object length; | |
818 | register Lisp_Object *vec; | |
819 | register Lisp_Object tail; | |
820 | register int i; | |
821 | ||
822 | length = Flength (list); | |
823 | vec = (Lisp_Object *) alloca (XINT (length) * sizeof (Lisp_Object)); | |
824 | for (i = XINT (length) - 1, tail = list; i >= 0; i--, tail = Fcdr (tail)) | |
825 | vec[i] = Fcar (tail); | |
826 | ||
827 | return Flist (XINT (length), vec); | |
828 | } | |
829 | \f | |
830 | Lisp_Object merge (); | |
831 | ||
832 | DEFUN ("sort", Fsort, Ssort, 2, 2, 0, | |
833 | "Sort LIST, stably, comparing elements using PREDICATE.\n\ | |
834 | Returns the sorted list. LIST is modified by side effects.\n\ | |
835 | PREDICATE is called with two elements of LIST, and should return T\n\ | |
836 | if the first element is \"less\" than the second.") | |
88fe8140 EN |
837 | (list, predicate) |
838 | Lisp_Object list, predicate; | |
7b863bd5 JB |
839 | { |
840 | Lisp_Object front, back; | |
841 | register Lisp_Object len, tem; | |
842 | struct gcpro gcpro1, gcpro2; | |
843 | register int length; | |
844 | ||
845 | front = list; | |
846 | len = Flength (list); | |
847 | length = XINT (len); | |
848 | if (length < 2) | |
849 | return list; | |
850 | ||
851 | XSETINT (len, (length / 2) - 1); | |
852 | tem = Fnthcdr (len, list); | |
853 | back = Fcdr (tem); | |
854 | Fsetcdr (tem, Qnil); | |
855 | ||
856 | GCPRO2 (front, back); | |
88fe8140 EN |
857 | front = Fsort (front, predicate); |
858 | back = Fsort (back, predicate); | |
7b863bd5 | 859 | UNGCPRO; |
88fe8140 | 860 | return merge (front, back, predicate); |
7b863bd5 JB |
861 | } |
862 | ||
863 | Lisp_Object | |
864 | merge (org_l1, org_l2, pred) | |
865 | Lisp_Object org_l1, org_l2; | |
866 | Lisp_Object pred; | |
867 | { | |
868 | Lisp_Object value; | |
869 | register Lisp_Object tail; | |
870 | Lisp_Object tem; | |
871 | register Lisp_Object l1, l2; | |
872 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
873 | ||
874 | l1 = org_l1; | |
875 | l2 = org_l2; | |
876 | tail = Qnil; | |
877 | value = Qnil; | |
878 | ||
879 | /* It is sufficient to protect org_l1 and org_l2. | |
880 | When l1 and l2 are updated, we copy the new values | |
881 | back into the org_ vars. */ | |
882 | GCPRO4 (org_l1, org_l2, pred, value); | |
883 | ||
884 | while (1) | |
885 | { | |
265a9e55 | 886 | if (NILP (l1)) |
7b863bd5 JB |
887 | { |
888 | UNGCPRO; | |
265a9e55 | 889 | if (NILP (tail)) |
7b863bd5 JB |
890 | return l2; |
891 | Fsetcdr (tail, l2); | |
892 | return value; | |
893 | } | |
265a9e55 | 894 | if (NILP (l2)) |
7b863bd5 JB |
895 | { |
896 | UNGCPRO; | |
265a9e55 | 897 | if (NILP (tail)) |
7b863bd5 JB |
898 | return l1; |
899 | Fsetcdr (tail, l1); | |
900 | return value; | |
901 | } | |
902 | tem = call2 (pred, Fcar (l2), Fcar (l1)); | |
265a9e55 | 903 | if (NILP (tem)) |
7b863bd5 JB |
904 | { |
905 | tem = l1; | |
906 | l1 = Fcdr (l1); | |
907 | org_l1 = l1; | |
908 | } | |
909 | else | |
910 | { | |
911 | tem = l2; | |
912 | l2 = Fcdr (l2); | |
913 | org_l2 = l2; | |
914 | } | |
265a9e55 | 915 | if (NILP (tail)) |
7b863bd5 JB |
916 | value = tem; |
917 | else | |
918 | Fsetcdr (tail, tem); | |
919 | tail = tem; | |
920 | } | |
921 | } | |
922 | \f | |
be9d483d BG |
923 | |
924 | DEFUN ("plist-get", Fplist_get, Splist_get, 2, 2, 0, | |
1fbb64aa | 925 | "Extract a value from a property list.\n\ |
be9d483d | 926 | PLIST is a property list, which is a list of the form\n\ |
c07289e0 | 927 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value\n\ |
be9d483d BG |
928 | corresponding to the given PROP, or nil if PROP is not\n\ |
929 | one of the properties on the list.") | |
1fbb64aa EN |
930 | (plist, prop) |
931 | Lisp_Object plist; | |
7b863bd5 JB |
932 | register Lisp_Object prop; |
933 | { | |
934 | register Lisp_Object tail; | |
1fbb64aa | 935 | for (tail = plist; !NILP (tail); tail = Fcdr (Fcdr (tail))) |
7b863bd5 JB |
936 | { |
937 | register Lisp_Object tem; | |
938 | tem = Fcar (tail); | |
939 | if (EQ (prop, tem)) | |
940 | return Fcar (Fcdr (tail)); | |
941 | } | |
942 | return Qnil; | |
943 | } | |
944 | ||
be9d483d BG |
945 | DEFUN ("get", Fget, Sget, 2, 2, 0, |
946 | "Return the value of SYMBOL's PROPNAME property.\n\ | |
c07289e0 RS |
947 | This is the last value stored with `(put SYMBOL PROPNAME VALUE)'.") |
948 | (symbol, propname) | |
949 | Lisp_Object symbol, propname; | |
be9d483d | 950 | { |
c07289e0 RS |
951 | CHECK_SYMBOL (symbol, 0); |
952 | return Fplist_get (XSYMBOL (symbol)->plist, propname); | |
be9d483d BG |
953 | } |
954 | ||
955 | DEFUN ("plist-put", Fplist_put, Splist_put, 3, 3, 0, | |
956 | "Change value in PLIST of PROP to VAL.\n\ | |
957 | PLIST is a property list, which is a list of the form\n\ | |
c07289e0 | 958 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP is a symbol and VAL is any object.\n\ |
be9d483d | 959 | If PROP is already a property on the list, its value is set to VAL,\n\ |
88435890 | 960 | otherwise the new PROP VAL pair is added. The new plist is returned;\n\ |
be9d483d BG |
961 | use `(setq x (plist-put x prop val))' to be sure to use the new value.\n\ |
962 | The PLIST is modified by side effects.") | |
963 | (plist, prop, val) | |
964 | Lisp_Object plist; | |
965 | register Lisp_Object prop; | |
966 | Lisp_Object val; | |
7b863bd5 JB |
967 | { |
968 | register Lisp_Object tail, prev; | |
969 | Lisp_Object newcell; | |
970 | prev = Qnil; | |
f8307c0c KH |
971 | for (tail = plist; CONSP (tail) && CONSP (XCONS (tail)->cdr); |
972 | tail = XCONS (XCONS (tail)->cdr)->cdr) | |
7b863bd5 | 973 | { |
f8307c0c | 974 | if (EQ (prop, XCONS (tail)->car)) |
be9d483d | 975 | { |
f8307c0c | 976 | Fsetcar (XCONS (tail)->cdr, val); |
be9d483d BG |
977 | return plist; |
978 | } | |
7b863bd5 JB |
979 | prev = tail; |
980 | } | |
981 | newcell = Fcons (prop, Fcons (val, Qnil)); | |
265a9e55 | 982 | if (NILP (prev)) |
be9d483d | 983 | return newcell; |
7b863bd5 | 984 | else |
f8307c0c | 985 | Fsetcdr (XCONS (prev)->cdr, newcell); |
be9d483d BG |
986 | return plist; |
987 | } | |
988 | ||
989 | DEFUN ("put", Fput, Sput, 3, 3, 0, | |
990 | "Store SYMBOL's PROPNAME property with value VALUE.\n\ | |
991 | It can be retrieved with `(get SYMBOL PROPNAME)'.") | |
c07289e0 RS |
992 | (symbol, propname, value) |
993 | Lisp_Object symbol, propname, value; | |
be9d483d | 994 | { |
c07289e0 RS |
995 | CHECK_SYMBOL (symbol, 0); |
996 | XSYMBOL (symbol)->plist | |
997 | = Fplist_put (XSYMBOL (symbol)->plist, propname, value); | |
998 | return value; | |
7b863bd5 JB |
999 | } |
1000 | ||
1001 | DEFUN ("equal", Fequal, Sequal, 2, 2, 0, | |
1002 | "T if two Lisp objects have similar structure and contents.\n\ | |
1003 | They must have the same data type.\n\ | |
1004 | Conses are compared by comparing the cars and the cdrs.\n\ | |
1005 | Vectors and strings are compared element by element.\n\ | |
d28c4332 RS |
1006 | Numbers are compared by value, but integers cannot equal floats.\n\ |
1007 | (Use `=' if you want integers and floats to be able to be equal.)\n\ | |
1008 | Symbols must match exactly.") | |
7b863bd5 JB |
1009 | (o1, o2) |
1010 | register Lisp_Object o1, o2; | |
1011 | { | |
6cb9cafb | 1012 | return internal_equal (o1, o2, 0) ? Qt : Qnil; |
e0f5cf5a RS |
1013 | } |
1014 | ||
6cb9cafb | 1015 | static int |
e0f5cf5a RS |
1016 | internal_equal (o1, o2, depth) |
1017 | register Lisp_Object o1, o2; | |
1018 | int depth; | |
1019 | { | |
1020 | if (depth > 200) | |
1021 | error ("Stack overflow in equal"); | |
4ff1aed9 | 1022 | |
6cb9cafb | 1023 | tail_recurse: |
7b863bd5 | 1024 | QUIT; |
4ff1aed9 RS |
1025 | if (EQ (o1, o2)) |
1026 | return 1; | |
1027 | if (XTYPE (o1) != XTYPE (o2)) | |
1028 | return 0; | |
1029 | ||
1030 | switch (XTYPE (o1)) | |
1031 | { | |
31ef7f7a | 1032 | #ifdef LISP_FLOAT_TYPE |
4ff1aed9 RS |
1033 | case Lisp_Float: |
1034 | return (extract_float (o1) == extract_float (o2)); | |
31ef7f7a | 1035 | #endif |
4ff1aed9 RS |
1036 | |
1037 | case Lisp_Cons: | |
4cab5074 KH |
1038 | if (!internal_equal (XCONS (o1)->car, XCONS (o2)->car, depth + 1)) |
1039 | return 0; | |
1040 | o1 = XCONS (o1)->cdr; | |
1041 | o2 = XCONS (o2)->cdr; | |
1042 | goto tail_recurse; | |
4ff1aed9 RS |
1043 | |
1044 | case Lisp_Misc: | |
81d1fba6 | 1045 | if (XMISCTYPE (o1) != XMISCTYPE (o2)) |
6cb9cafb | 1046 | return 0; |
4ff1aed9 | 1047 | if (OVERLAYP (o1)) |
7b863bd5 | 1048 | { |
4ff1aed9 RS |
1049 | if (!internal_equal (OVERLAY_START (o1), OVERLAY_START (o1), |
1050 | depth + 1) | |
1051 | || !internal_equal (OVERLAY_END (o1), OVERLAY_END (o1), | |
1052 | depth + 1)) | |
6cb9cafb | 1053 | return 0; |
4ff1aed9 RS |
1054 | o1 = XOVERLAY (o1)->plist; |
1055 | o2 = XOVERLAY (o2)->plist; | |
1056 | goto tail_recurse; | |
7b863bd5 | 1057 | } |
4ff1aed9 RS |
1058 | if (MARKERP (o1)) |
1059 | { | |
1060 | return (XMARKER (o1)->buffer == XMARKER (o2)->buffer | |
1061 | && (XMARKER (o1)->buffer == 0 | |
1062 | || XMARKER (o1)->bufpos == XMARKER (o2)->bufpos)); | |
1063 | } | |
1064 | break; | |
1065 | ||
1066 | case Lisp_Vectorlike: | |
4cab5074 KH |
1067 | { |
1068 | register int i, size; | |
1069 | size = XVECTOR (o1)->size; | |
1070 | /* Pseudovectors have the type encoded in the size field, so this test | |
1071 | actually checks that the objects have the same type as well as the | |
1072 | same size. */ | |
1073 | if (XVECTOR (o2)->size != size) | |
1074 | return 0; | |
e03f7933 RS |
1075 | /* Boolvectors are compared much like strings. */ |
1076 | if (BOOL_VECTOR_P (o1)) | |
1077 | { | |
e03f7933 | 1078 | int size_in_chars |
68be917d | 1079 | = (XBOOL_VECTOR (o1)->size + BITS_PER_CHAR) / BITS_PER_CHAR; |
e03f7933 RS |
1080 | |
1081 | if (XBOOL_VECTOR (o1)->size != XBOOL_VECTOR (o2)->size) | |
1082 | return 0; | |
1083 | if (bcmp (XBOOL_VECTOR (o1)->data, XBOOL_VECTOR (o2)->data, | |
1084 | size_in_chars)) | |
1085 | return 0; | |
1086 | return 1; | |
1087 | } | |
1088 | ||
1089 | /* Aside from them, only true vectors, char-tables, and compiled | |
1090 | functions are sensible to compare, so eliminate the others now. */ | |
4cab5074 KH |
1091 | if (size & PSEUDOVECTOR_FLAG) |
1092 | { | |
e03f7933 | 1093 | if (!(size & (PVEC_COMPILED | PVEC_CHAR_TABLE))) |
4cab5074 KH |
1094 | return 0; |
1095 | size &= PSEUDOVECTOR_SIZE_MASK; | |
1096 | } | |
1097 | for (i = 0; i < size; i++) | |
1098 | { | |
1099 | Lisp_Object v1, v2; | |
1100 | v1 = XVECTOR (o1)->contents [i]; | |
1101 | v2 = XVECTOR (o2)->contents [i]; | |
1102 | if (!internal_equal (v1, v2, depth + 1)) | |
1103 | return 0; | |
1104 | } | |
1105 | return 1; | |
1106 | } | |
4ff1aed9 RS |
1107 | break; |
1108 | ||
1109 | case Lisp_String: | |
4cab5074 KH |
1110 | if (XSTRING (o1)->size != XSTRING (o2)->size) |
1111 | return 0; | |
1112 | if (bcmp (XSTRING (o1)->data, XSTRING (o2)->data, | |
1113 | XSTRING (o1)->size)) | |
1114 | return 0; | |
76d0f732 | 1115 | #ifdef USE_TEXT_PROPERTIES |
4cab5074 KH |
1116 | /* If the strings have intervals, verify they match; |
1117 | if not, they are unequal. */ | |
1118 | if ((XSTRING (o1)->intervals != 0 || XSTRING (o2)->intervals != 0) | |
1119 | && ! compare_string_intervals (o1, o2)) | |
1120 | return 0; | |
76d0f732 | 1121 | #endif |
4cab5074 | 1122 | return 1; |
7b863bd5 | 1123 | } |
6cb9cafb | 1124 | return 0; |
7b863bd5 JB |
1125 | } |
1126 | \f | |
1127 | DEFUN ("fillarray", Ffillarray, Sfillarray, 2, 2, 0, | |
e03f7933 RS |
1128 | "Store each element of ARRAY with ITEM.\n\ |
1129 | ARRAY is a vector, string, char-table, or bool-vector.") | |
7b863bd5 JB |
1130 | (array, item) |
1131 | Lisp_Object array, item; | |
1132 | { | |
1133 | register int size, index, charval; | |
1134 | retry: | |
7650760e | 1135 | if (VECTORP (array)) |
7b863bd5 JB |
1136 | { |
1137 | register Lisp_Object *p = XVECTOR (array)->contents; | |
1138 | size = XVECTOR (array)->size; | |
1139 | for (index = 0; index < size; index++) | |
1140 | p[index] = item; | |
1141 | } | |
e03f7933 RS |
1142 | else if (CHAR_TABLE_P (array)) |
1143 | { | |
1144 | register Lisp_Object *p = XCHAR_TABLE (array)->contents; | |
1145 | size = CHAR_TABLE_ORDINARY_SLOTS; | |
1146 | for (index = 0; index < size; index++) | |
1147 | p[index] = item; | |
1148 | XCHAR_TABLE (array)->defalt = Qnil; | |
1149 | } | |
7650760e | 1150 | else if (STRINGP (array)) |
7b863bd5 JB |
1151 | { |
1152 | register unsigned char *p = XSTRING (array)->data; | |
1153 | CHECK_NUMBER (item, 1); | |
1154 | charval = XINT (item); | |
1155 | size = XSTRING (array)->size; | |
1156 | for (index = 0; index < size; index++) | |
1157 | p[index] = charval; | |
1158 | } | |
e03f7933 RS |
1159 | else if (BOOL_VECTOR_P (array)) |
1160 | { | |
1161 | register unsigned char *p = XBOOL_VECTOR (array)->data; | |
e03f7933 | 1162 | int size_in_chars |
68be917d | 1163 | = (XBOOL_VECTOR (array)->size + BITS_PER_CHAR) / BITS_PER_CHAR; |
e03f7933 RS |
1164 | |
1165 | charval = (! NILP (item) ? -1 : 0); | |
1166 | for (index = 0; index < size_in_chars; index++) | |
1167 | p[index] = charval; | |
1168 | } | |
7b863bd5 JB |
1169 | else |
1170 | { | |
1171 | array = wrong_type_argument (Qarrayp, array); | |
1172 | goto retry; | |
1173 | } | |
1174 | return array; | |
1175 | } | |
1176 | ||
999de246 RS |
1177 | DEFUN ("char-table-subtype", Fchar_table_subtype, Schar_table_subtype, |
1178 | 1, 1, 0, | |
1179 | "Return the subtype of char-table CHAR-TABLE. The value is a symbol.") | |
88fe8140 EN |
1180 | (char_table) |
1181 | Lisp_Object char_table; | |
999de246 | 1182 | { |
88fe8140 | 1183 | CHECK_CHAR_TABLE (char_table, 0); |
999de246 | 1184 | |
88fe8140 | 1185 | return XCHAR_TABLE (char_table)->purpose; |
999de246 RS |
1186 | } |
1187 | ||
e03f7933 RS |
1188 | DEFUN ("char-table-parent", Fchar_table_parent, Schar_table_parent, |
1189 | 1, 1, 0, | |
1190 | "Return the parent char-table of CHAR-TABLE.\n\ | |
1191 | The value is either nil or another char-table.\n\ | |
1192 | If CHAR-TABLE holds nil for a given character,\n\ | |
1193 | then the actual applicable value is inherited from the parent char-table\n\ | |
1194 | \(or from its parents, if necessary).") | |
88fe8140 EN |
1195 | (char_table) |
1196 | Lisp_Object char_table; | |
e03f7933 | 1197 | { |
88fe8140 | 1198 | CHECK_CHAR_TABLE (char_table, 0); |
e03f7933 | 1199 | |
88fe8140 | 1200 | return XCHAR_TABLE (char_table)->parent; |
e03f7933 RS |
1201 | } |
1202 | ||
1203 | DEFUN ("set-char-table-parent", Fset_char_table_parent, Sset_char_table_parent, | |
1204 | 2, 2, 0, | |
1205 | "Set the parent char-table of CHAR-TABLE to PARENT.\n\ | |
1206 | PARENT must be either nil or another char-table.") | |
88fe8140 EN |
1207 | (char_table, parent) |
1208 | Lisp_Object char_table, parent; | |
e03f7933 RS |
1209 | { |
1210 | Lisp_Object temp; | |
1211 | ||
88fe8140 | 1212 | CHECK_CHAR_TABLE (char_table, 0); |
e03f7933 | 1213 | |
c8640abf RS |
1214 | if (!NILP (parent)) |
1215 | { | |
1216 | CHECK_CHAR_TABLE (parent, 0); | |
1217 | ||
1218 | for (temp = parent; !NILP (temp); temp = XCHAR_TABLE (temp)->parent) | |
55cc974d | 1219 | if (EQ (temp, char_table)) |
c8640abf RS |
1220 | error ("Attempt to make a chartable be its own parent"); |
1221 | } | |
e03f7933 | 1222 | |
88fe8140 | 1223 | XCHAR_TABLE (char_table)->parent = parent; |
e03f7933 RS |
1224 | |
1225 | return parent; | |
1226 | } | |
1227 | ||
1228 | DEFUN ("char-table-extra-slot", Fchar_table_extra_slot, Schar_table_extra_slot, | |
1229 | 2, 2, 0, | |
1230 | "Return the value in extra-slot number N of char-table CHAR-TABLE.") | |
88fe8140 EN |
1231 | (char_table, n) |
1232 | Lisp_Object char_table, n; | |
e03f7933 | 1233 | { |
88fe8140 | 1234 | CHECK_CHAR_TABLE (char_table, 1); |
e03f7933 RS |
1235 | CHECK_NUMBER (n, 2); |
1236 | if (XINT (n) < 0 | |
88fe8140 EN |
1237 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
1238 | args_out_of_range (char_table, n); | |
e03f7933 | 1239 | |
88fe8140 | 1240 | return XCHAR_TABLE (char_table)->extras[XINT (n)]; |
e03f7933 RS |
1241 | } |
1242 | ||
1243 | DEFUN ("set-char-table-extra-slot", Fset_char_table_extra_slot, | |
1244 | Sset_char_table_extra_slot, | |
1245 | 3, 3, 0, | |
1246 | "Set extra-slot number N of CHAR-TABLE to VALUE.") | |
88fe8140 EN |
1247 | (char_table, n, value) |
1248 | Lisp_Object char_table, n, value; | |
e03f7933 | 1249 | { |
88fe8140 | 1250 | CHECK_CHAR_TABLE (char_table, 1); |
e03f7933 RS |
1251 | CHECK_NUMBER (n, 2); |
1252 | if (XINT (n) < 0 | |
88fe8140 EN |
1253 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
1254 | args_out_of_range (char_table, n); | |
e03f7933 | 1255 | |
88fe8140 | 1256 | return XCHAR_TABLE (char_table)->extras[XINT (n)] = value; |
e03f7933 RS |
1257 | } |
1258 | ||
999de246 RS |
1259 | DEFUN ("char-table-range", Fchar_table_range, Schar_table_range, |
1260 | 2, 2, 0, | |
88fe8140 | 1261 | "Return the value in CHAR-TABLE for a range of characters RANGE.\n\ |
999de246 RS |
1262 | RANGE should be t (for all characters), nil (for the default value)\n\ |
1263 | a vector which identifies a character set or a row of a character set,\n\ | |
1264 | or a character code.") | |
88fe8140 EN |
1265 | (char_table, range) |
1266 | Lisp_Object char_table, range; | |
999de246 RS |
1267 | { |
1268 | int i; | |
1269 | ||
88fe8140 | 1270 | CHECK_CHAR_TABLE (char_table, 0); |
999de246 RS |
1271 | |
1272 | if (EQ (range, Qnil)) | |
88fe8140 | 1273 | return XCHAR_TABLE (char_table)->defalt; |
999de246 | 1274 | else if (INTEGERP (range)) |
88fe8140 | 1275 | return Faref (char_table, range); |
999de246 RS |
1276 | else if (VECTORP (range)) |
1277 | { | |
1278 | for (i = 0; i < XVECTOR (range)->size - 1; i++) | |
88fe8140 | 1279 | char_table = Faref (char_table, XVECTOR (range)->contents[i]); |
999de246 RS |
1280 | |
1281 | if (EQ (XVECTOR (range)->contents[i], Qnil)) | |
88fe8140 | 1282 | return XCHAR_TABLE (char_table)->defalt; |
999de246 | 1283 | else |
88fe8140 | 1284 | return Faref (char_table, XVECTOR (range)->contents[i]); |
999de246 RS |
1285 | } |
1286 | else | |
1287 | error ("Invalid RANGE argument to `char-table-range'"); | |
1288 | } | |
1289 | ||
e03f7933 RS |
1290 | DEFUN ("set-char-table-range", Fset_char_table_range, Sset_char_table_range, |
1291 | 3, 3, 0, | |
88fe8140 | 1292 | "Set the value in CHAR-TABLE for a range of characters RANGE to VALUE.\n\ |
e03f7933 RS |
1293 | RANGE should be t (for all characters), nil (for the default value)\n\ |
1294 | a vector which identifies a character set or a row of a character set,\n\ | |
1295 | or a character code.") | |
88fe8140 EN |
1296 | (char_table, range, value) |
1297 | Lisp_Object char_table, range, value; | |
e03f7933 RS |
1298 | { |
1299 | int i; | |
1300 | ||
88fe8140 | 1301 | CHECK_CHAR_TABLE (char_table, 0); |
e03f7933 RS |
1302 | |
1303 | if (EQ (range, Qt)) | |
1304 | for (i = 0; i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
88fe8140 | 1305 | XCHAR_TABLE (char_table)->contents[i] = value; |
e03f7933 | 1306 | else if (EQ (range, Qnil)) |
88fe8140 | 1307 | XCHAR_TABLE (char_table)->defalt = value; |
e03f7933 | 1308 | else if (INTEGERP (range)) |
88fe8140 | 1309 | Faset (char_table, range, value); |
e03f7933 RS |
1310 | else if (VECTORP (range)) |
1311 | { | |
1312 | for (i = 0; i < XVECTOR (range)->size - 1; i++) | |
88fe8140 | 1313 | char_table = Faref (char_table, XVECTOR (range)->contents[i]); |
e03f7933 RS |
1314 | |
1315 | if (EQ (XVECTOR (range)->contents[i], Qnil)) | |
88fe8140 | 1316 | XCHAR_TABLE (char_table)->defalt = value; |
e03f7933 | 1317 | else |
88fe8140 | 1318 | Faset (char_table, XVECTOR (range)->contents[i], value); |
e03f7933 RS |
1319 | } |
1320 | else | |
1321 | error ("Invalid RANGE argument to `set-char-table-range'"); | |
1322 | ||
1323 | return value; | |
1324 | } | |
1325 | \f | |
c8640abf RS |
1326 | /* Map C_FUNCTION or FUNCTION over CHARTABLE, calling it for each |
1327 | character or group of characters that share a value. | |
1328 | DEPTH is the current depth in the originally specified | |
1329 | chartable, and INDICES contains the vector indices | |
1330 | for the levels our callers have descended. */ | |
1331 | ||
1332 | void | |
1333 | map_char_table (c_function, function, chartable, depth, indices) | |
1334 | Lisp_Object (*c_function) (), function, chartable, depth, *indices; | |
e03f7933 RS |
1335 | { |
1336 | int i; | |
da19ac11 | 1337 | int size = CHAR_TABLE_ORDINARY_SLOTS; |
e03f7933 RS |
1338 | |
1339 | /* Make INDICES longer if we are about to fill it up. */ | |
1340 | if ((depth % 10) == 9) | |
1341 | { | |
1342 | Lisp_Object *new_indices | |
1343 | = (Lisp_Object *) alloca ((depth += 10) * sizeof (Lisp_Object)); | |
1344 | bcopy (indices, new_indices, depth * sizeof (Lisp_Object)); | |
1345 | indices = new_indices; | |
1346 | } | |
1347 | ||
1348 | for (i = 0; i < size; i++) | |
1349 | { | |
1350 | Lisp_Object elt; | |
1351 | indices[depth] = i; | |
1352 | elt = XCHAR_TABLE (chartable)->contents[i]; | |
c8640abf | 1353 | if (CHAR_TABLE_P (elt)) |
e2018b74 | 1354 | map_char_table (c_function, function, chartable, depth + 1, indices); |
c8640abf RS |
1355 | else if (c_function) |
1356 | (*c_function) (depth + 1, indices, elt); | |
999de246 RS |
1357 | /* Here we should handle all cases where the range is a single character |
1358 | by passing that character as a number. Currently, that is | |
1359 | all the time, but with the MULE code this will have to be changed. */ | |
1360 | else if (depth == 0) | |
1361 | call2 (function, make_number (i), elt); | |
e03f7933 | 1362 | else |
c8640abf | 1363 | call2 (function, Fvector (depth + 1, indices), elt); |
e03f7933 RS |
1364 | } |
1365 | } | |
1366 | ||
1367 | DEFUN ("map-char-table", Fmap_char_table, Smap_char_table, | |
1368 | 2, 2, 0, | |
88fe8140 | 1369 | "Call FUNCTION for each range of like characters in CHAR-TABLE.\n\ |
e03f7933 RS |
1370 | FUNCTION is called with two arguments--a key and a value.\n\ |
1371 | The key is always a possible RANGE argument to `set-char-table-range'.") | |
88fe8140 EN |
1372 | (function, char_table) |
1373 | Lisp_Object function, char_table; | |
e03f7933 RS |
1374 | { |
1375 | Lisp_Object keyvec; | |
1376 | Lisp_Object *indices = (Lisp_Object *) alloca (10 * sizeof (Lisp_Object)); | |
1377 | ||
88fe8140 | 1378 | map_char_table (NULL, function, char_table, 0, indices); |
e03f7933 RS |
1379 | return Qnil; |
1380 | } | |
1381 | \f | |
7b863bd5 JB |
1382 | /* ARGSUSED */ |
1383 | Lisp_Object | |
1384 | nconc2 (s1, s2) | |
1385 | Lisp_Object s1, s2; | |
1386 | { | |
1387 | #ifdef NO_ARG_ARRAY | |
1388 | Lisp_Object args[2]; | |
1389 | args[0] = s1; | |
1390 | args[1] = s2; | |
1391 | return Fnconc (2, args); | |
1392 | #else | |
1393 | return Fnconc (2, &s1); | |
1394 | #endif /* NO_ARG_ARRAY */ | |
1395 | } | |
1396 | ||
1397 | DEFUN ("nconc", Fnconc, Snconc, 0, MANY, 0, | |
1398 | "Concatenate any number of lists by altering them.\n\ | |
1399 | Only the last argument is not altered, and need not be a list.") | |
1400 | (nargs, args) | |
1401 | int nargs; | |
1402 | Lisp_Object *args; | |
1403 | { | |
1404 | register int argnum; | |
1405 | register Lisp_Object tail, tem, val; | |
1406 | ||
1407 | val = Qnil; | |
1408 | ||
1409 | for (argnum = 0; argnum < nargs; argnum++) | |
1410 | { | |
1411 | tem = args[argnum]; | |
265a9e55 | 1412 | if (NILP (tem)) continue; |
7b863bd5 | 1413 | |
265a9e55 | 1414 | if (NILP (val)) |
7b863bd5 JB |
1415 | val = tem; |
1416 | ||
1417 | if (argnum + 1 == nargs) break; | |
1418 | ||
1419 | if (!CONSP (tem)) | |
1420 | tem = wrong_type_argument (Qlistp, tem); | |
1421 | ||
1422 | while (CONSP (tem)) | |
1423 | { | |
1424 | tail = tem; | |
1425 | tem = Fcdr (tail); | |
1426 | QUIT; | |
1427 | } | |
1428 | ||
1429 | tem = args[argnum + 1]; | |
1430 | Fsetcdr (tail, tem); | |
265a9e55 | 1431 | if (NILP (tem)) |
7b863bd5 JB |
1432 | args[argnum + 1] = tail; |
1433 | } | |
1434 | ||
1435 | return val; | |
1436 | } | |
1437 | \f | |
1438 | /* This is the guts of all mapping functions. | |
1439 | Apply fn to each element of seq, one by one, | |
1440 | storing the results into elements of vals, a C vector of Lisp_Objects. | |
1441 | leni is the length of vals, which should also be the length of seq. */ | |
1442 | ||
1443 | static void | |
1444 | mapcar1 (leni, vals, fn, seq) | |
1445 | int leni; | |
1446 | Lisp_Object *vals; | |
1447 | Lisp_Object fn, seq; | |
1448 | { | |
1449 | register Lisp_Object tail; | |
1450 | Lisp_Object dummy; | |
1451 | register int i; | |
1452 | struct gcpro gcpro1, gcpro2, gcpro3; | |
1453 | ||
1454 | /* Don't let vals contain any garbage when GC happens. */ | |
1455 | for (i = 0; i < leni; i++) | |
1456 | vals[i] = Qnil; | |
1457 | ||
1458 | GCPRO3 (dummy, fn, seq); | |
1459 | gcpro1.var = vals; | |
1460 | gcpro1.nvars = leni; | |
1461 | /* We need not explicitly protect `tail' because it is used only on lists, and | |
1462 | 1) lists are not relocated and 2) the list is marked via `seq' so will not be freed */ | |
1463 | ||
7650760e | 1464 | if (VECTORP (seq)) |
7b863bd5 JB |
1465 | { |
1466 | for (i = 0; i < leni; i++) | |
1467 | { | |
1468 | dummy = XVECTOR (seq)->contents[i]; | |
1469 | vals[i] = call1 (fn, dummy); | |
1470 | } | |
1471 | } | |
7650760e | 1472 | else if (STRINGP (seq)) |
7b863bd5 JB |
1473 | { |
1474 | for (i = 0; i < leni; i++) | |
1475 | { | |
ad17573a | 1476 | XSETFASTINT (dummy, XSTRING (seq)->data[i]); |
7b863bd5 JB |
1477 | vals[i] = call1 (fn, dummy); |
1478 | } | |
1479 | } | |
1480 | else /* Must be a list, since Flength did not get an error */ | |
1481 | { | |
1482 | tail = seq; | |
1483 | for (i = 0; i < leni; i++) | |
1484 | { | |
1485 | vals[i] = call1 (fn, Fcar (tail)); | |
1486 | tail = Fcdr (tail); | |
1487 | } | |
1488 | } | |
1489 | ||
1490 | UNGCPRO; | |
1491 | } | |
1492 | ||
1493 | DEFUN ("mapconcat", Fmapconcat, Smapconcat, 3, 3, 0, | |
88fe8140 EN |
1494 | "Apply FUNCTION to each element of SEQUENCE, and concat the results as strings.\n\ |
1495 | In between each pair of results, stick in SEPARATOR. Thus, \" \" as\n\ | |
1496 | SEPARATOR results in spaces between the values returned by FUNCTION.") | |
1497 | (function, sequence, separator) | |
1498 | Lisp_Object function, sequence, separator; | |
7b863bd5 JB |
1499 | { |
1500 | Lisp_Object len; | |
1501 | register int leni; | |
1502 | int nargs; | |
1503 | register Lisp_Object *args; | |
1504 | register int i; | |
1505 | struct gcpro gcpro1; | |
1506 | ||
88fe8140 | 1507 | len = Flength (sequence); |
7b863bd5 JB |
1508 | leni = XINT (len); |
1509 | nargs = leni + leni - 1; | |
1510 | if (nargs < 0) return build_string (""); | |
1511 | ||
1512 | args = (Lisp_Object *) alloca (nargs * sizeof (Lisp_Object)); | |
1513 | ||
88fe8140 EN |
1514 | GCPRO1 (separator); |
1515 | mapcar1 (leni, args, function, sequence); | |
7b863bd5 JB |
1516 | UNGCPRO; |
1517 | ||
1518 | for (i = leni - 1; i >= 0; i--) | |
1519 | args[i + i] = args[i]; | |
1520 | ||
1521 | for (i = 1; i < nargs; i += 2) | |
88fe8140 | 1522 | args[i] = separator; |
7b863bd5 JB |
1523 | |
1524 | return Fconcat (nargs, args); | |
1525 | } | |
1526 | ||
1527 | DEFUN ("mapcar", Fmapcar, Smapcar, 2, 2, 0, | |
1528 | "Apply FUNCTION to each element of SEQUENCE, and make a list of the results.\n\ | |
1529 | The result is a list just as long as SEQUENCE.\n\ | |
1530 | SEQUENCE may be a list, a vector or a string.") | |
88fe8140 EN |
1531 | (function, sequence) |
1532 | Lisp_Object function, sequence; | |
7b863bd5 JB |
1533 | { |
1534 | register Lisp_Object len; | |
1535 | register int leni; | |
1536 | register Lisp_Object *args; | |
1537 | ||
88fe8140 | 1538 | len = Flength (sequence); |
7b863bd5 JB |
1539 | leni = XFASTINT (len); |
1540 | args = (Lisp_Object *) alloca (leni * sizeof (Lisp_Object)); | |
1541 | ||
88fe8140 | 1542 | mapcar1 (leni, args, function, sequence); |
7b863bd5 JB |
1543 | |
1544 | return Flist (leni, args); | |
1545 | } | |
1546 | \f | |
1547 | /* Anything that calls this function must protect from GC! */ | |
1548 | ||
1549 | DEFUN ("y-or-n-p", Fy_or_n_p, Sy_or_n_p, 1, 1, 0, | |
1550 | "Ask user a \"y or n\" question. Return t if answer is \"y\".\n\ | |
c763f396 RS |
1551 | Takes one argument, which is the string to display to ask the question.\n\ |
1552 | It should end in a space; `y-or-n-p' adds `(y or n) ' to it.\n\ | |
7b863bd5 JB |
1553 | No confirmation of the answer is requested; a single character is enough.\n\ |
1554 | Also accepts Space to mean yes, or Delete to mean no.") | |
1555 | (prompt) | |
1556 | Lisp_Object prompt; | |
1557 | { | |
f5313ed9 RS |
1558 | register Lisp_Object obj, key, def, answer_string, map; |
1559 | register int answer; | |
7b863bd5 JB |
1560 | Lisp_Object xprompt; |
1561 | Lisp_Object args[2]; | |
7b863bd5 | 1562 | struct gcpro gcpro1, gcpro2; |
eb4ffa4e RS |
1563 | int count = specpdl_ptr - specpdl; |
1564 | ||
1565 | specbind (Qcursor_in_echo_area, Qt); | |
7b863bd5 | 1566 | |
f5313ed9 RS |
1567 | map = Fsymbol_value (intern ("query-replace-map")); |
1568 | ||
7b863bd5 JB |
1569 | CHECK_STRING (prompt, 0); |
1570 | xprompt = prompt; | |
1571 | GCPRO2 (prompt, xprompt); | |
1572 | ||
1573 | while (1) | |
1574 | { | |
eb4ffa4e RS |
1575 | |
1576 | ||
0ef68e8a | 1577 | #ifdef HAVE_MENUS |
588064ce | 1578 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
0ef68e8a | 1579 | && have_menus_p ()) |
1db4cfb2 RS |
1580 | { |
1581 | Lisp_Object pane, menu; | |
a3b14a45 | 1582 | redisplay_preserve_echo_area (); |
1db4cfb2 RS |
1583 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
1584 | Fcons (Fcons (build_string ("No"), Qnil), | |
1585 | Qnil)); | |
ec26e1b9 | 1586 | menu = Fcons (prompt, pane); |
d2f28f78 | 1587 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
1588 | answer = !NILP (obj); |
1589 | break; | |
1590 | } | |
0ef68e8a | 1591 | #endif /* HAVE_MENUS */ |
dfa89228 | 1592 | cursor_in_echo_area = 1; |
b312cc52 | 1593 | choose_minibuf_frame (); |
d8616fc1 | 1594 | message_nolog ("%s(y or n) ", XSTRING (xprompt)->data); |
7b863bd5 | 1595 | |
dfa89228 KH |
1596 | obj = read_filtered_event (1, 0, 0); |
1597 | cursor_in_echo_area = 0; | |
1598 | /* If we need to quit, quit with cursor_in_echo_area = 0. */ | |
1599 | QUIT; | |
a63f658b | 1600 | |
f5313ed9 | 1601 | key = Fmake_vector (make_number (1), obj); |
aad2a123 | 1602 | def = Flookup_key (map, key, Qt); |
f5313ed9 | 1603 | answer_string = Fsingle_key_description (obj); |
7b863bd5 | 1604 | |
f5313ed9 RS |
1605 | if (EQ (def, intern ("skip"))) |
1606 | { | |
1607 | answer = 0; | |
1608 | break; | |
1609 | } | |
1610 | else if (EQ (def, intern ("act"))) | |
1611 | { | |
1612 | answer = 1; | |
1613 | break; | |
1614 | } | |
29944b73 RS |
1615 | else if (EQ (def, intern ("recenter"))) |
1616 | { | |
1617 | Frecenter (Qnil); | |
1618 | xprompt = prompt; | |
1619 | continue; | |
1620 | } | |
f5313ed9 | 1621 | else if (EQ (def, intern ("quit"))) |
7b863bd5 | 1622 | Vquit_flag = Qt; |
ec63af1b RS |
1623 | /* We want to exit this command for exit-prefix, |
1624 | and this is the only way to do it. */ | |
1625 | else if (EQ (def, intern ("exit-prefix"))) | |
1626 | Vquit_flag = Qt; | |
f5313ed9 | 1627 | |
7b863bd5 | 1628 | QUIT; |
20aa96aa JB |
1629 | |
1630 | /* If we don't clear this, then the next call to read_char will | |
1631 | return quit_char again, and we'll enter an infinite loop. */ | |
088880f1 | 1632 | Vquit_flag = Qnil; |
7b863bd5 JB |
1633 | |
1634 | Fding (Qnil); | |
1635 | Fdiscard_input (); | |
1636 | if (EQ (xprompt, prompt)) | |
1637 | { | |
1638 | args[0] = build_string ("Please answer y or n. "); | |
1639 | args[1] = prompt; | |
1640 | xprompt = Fconcat (2, args); | |
1641 | } | |
1642 | } | |
1643 | UNGCPRO; | |
6a8a9750 | 1644 | |
09c95874 RS |
1645 | if (! noninteractive) |
1646 | { | |
1647 | cursor_in_echo_area = -1; | |
d8616fc1 KH |
1648 | message_nolog ("%s(y or n) %c", |
1649 | XSTRING (xprompt)->data, answer ? 'y' : 'n'); | |
09c95874 | 1650 | } |
6a8a9750 | 1651 | |
eb4ffa4e | 1652 | unbind_to (count, Qnil); |
f5313ed9 | 1653 | return answer ? Qt : Qnil; |
7b863bd5 JB |
1654 | } |
1655 | \f | |
1656 | /* This is how C code calls `yes-or-no-p' and allows the user | |
1657 | to redefined it. | |
1658 | ||
1659 | Anything that calls this function must protect from GC! */ | |
1660 | ||
1661 | Lisp_Object | |
1662 | do_yes_or_no_p (prompt) | |
1663 | Lisp_Object prompt; | |
1664 | { | |
1665 | return call1 (intern ("yes-or-no-p"), prompt); | |
1666 | } | |
1667 | ||
1668 | /* Anything that calls this function must protect from GC! */ | |
1669 | ||
1670 | DEFUN ("yes-or-no-p", Fyes_or_no_p, Syes_or_no_p, 1, 1, 0, | |
c763f396 RS |
1671 | "Ask user a yes-or-no question. Return t if answer is yes.\n\ |
1672 | Takes one argument, which is the string to display to ask the question.\n\ | |
1673 | It should end in a space; `yes-or-no-p' adds `(yes or no) ' to it.\n\ | |
1674 | The user must confirm the answer with RET,\n\ | |
d8616fc1 | 1675 | and can edit it until it has been confirmed.") |
7b863bd5 JB |
1676 | (prompt) |
1677 | Lisp_Object prompt; | |
1678 | { | |
1679 | register Lisp_Object ans; | |
1680 | Lisp_Object args[2]; | |
1681 | struct gcpro gcpro1; | |
1db4cfb2 | 1682 | Lisp_Object menu; |
7b863bd5 JB |
1683 | |
1684 | CHECK_STRING (prompt, 0); | |
1685 | ||
0ef68e8a | 1686 | #ifdef HAVE_MENUS |
58def86c | 1687 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
0ef68e8a | 1688 | && have_menus_p ()) |
1db4cfb2 RS |
1689 | { |
1690 | Lisp_Object pane, menu, obj; | |
a3b14a45 | 1691 | redisplay_preserve_echo_area (); |
1db4cfb2 RS |
1692 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
1693 | Fcons (Fcons (build_string ("No"), Qnil), | |
1694 | Qnil)); | |
1695 | GCPRO1 (pane); | |
ec26e1b9 | 1696 | menu = Fcons (prompt, pane); |
b5ccb0a9 | 1697 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
1698 | UNGCPRO; |
1699 | return obj; | |
1700 | } | |
0ef68e8a | 1701 | #endif /* HAVE_MENUS */ |
1db4cfb2 | 1702 | |
7b863bd5 JB |
1703 | args[0] = prompt; |
1704 | args[1] = build_string ("(yes or no) "); | |
1705 | prompt = Fconcat (2, args); | |
1706 | ||
1707 | GCPRO1 (prompt); | |
1db4cfb2 | 1708 | |
7b863bd5 JB |
1709 | while (1) |
1710 | { | |
0ce830bc RS |
1711 | ans = Fdowncase (Fread_from_minibuffer (prompt, Qnil, Qnil, Qnil, |
1712 | Qyes_or_no_p_history)); | |
7b863bd5 JB |
1713 | if (XSTRING (ans)->size == 3 && !strcmp (XSTRING (ans)->data, "yes")) |
1714 | { | |
1715 | UNGCPRO; | |
1716 | return Qt; | |
1717 | } | |
1718 | if (XSTRING (ans)->size == 2 && !strcmp (XSTRING (ans)->data, "no")) | |
1719 | { | |
1720 | UNGCPRO; | |
1721 | return Qnil; | |
1722 | } | |
1723 | ||
1724 | Fding (Qnil); | |
1725 | Fdiscard_input (); | |
1726 | message ("Please answer yes or no."); | |
99dc4745 | 1727 | Fsleep_for (make_number (2), Qnil); |
7b863bd5 | 1728 | } |
7b863bd5 JB |
1729 | } |
1730 | \f | |
7b863bd5 JB |
1731 | DEFUN ("load-average", Fload_average, Sload_average, 0, 0, 0, |
1732 | "Return list of 1 minute, 5 minute and 15 minute load averages.\n\ | |
1733 | Each of the three load averages is multiplied by 100,\n\ | |
daa37602 JB |
1734 | then converted to integer.\n\ |
1735 | If the 5-minute or 15-minute load averages are not available, return a\n\ | |
1736 | shortened list, containing only those averages which are available.") | |
7b863bd5 JB |
1737 | () |
1738 | { | |
daa37602 JB |
1739 | double load_ave[3]; |
1740 | int loads = getloadavg (load_ave, 3); | |
1741 | Lisp_Object ret; | |
7b863bd5 | 1742 | |
daa37602 JB |
1743 | if (loads < 0) |
1744 | error ("load-average not implemented for this operating system"); | |
1745 | ||
1746 | ret = Qnil; | |
1747 | while (loads > 0) | |
1748 | ret = Fcons (make_number ((int) (load_ave[--loads] * 100.0)), ret); | |
1749 | ||
1750 | return ret; | |
1751 | } | |
7b863bd5 JB |
1752 | \f |
1753 | Lisp_Object Vfeatures; | |
1754 | ||
1755 | DEFUN ("featurep", Ffeaturep, Sfeaturep, 1, 1, 0, | |
1756 | "Returns t if FEATURE is present in this Emacs.\n\ | |
1757 | Use this to conditionalize execution of lisp code based on the presence or\n\ | |
1758 | absence of emacs or environment extensions.\n\ | |
1759 | Use `provide' to declare that a feature is available.\n\ | |
1760 | This function looks at the value of the variable `features'.") | |
1761 | (feature) | |
1762 | Lisp_Object feature; | |
1763 | { | |
1764 | register Lisp_Object tem; | |
1765 | CHECK_SYMBOL (feature, 0); | |
1766 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 1767 | return (NILP (tem)) ? Qnil : Qt; |
7b863bd5 JB |
1768 | } |
1769 | ||
1770 | DEFUN ("provide", Fprovide, Sprovide, 1, 1, 0, | |
1771 | "Announce that FEATURE is a feature of the current Emacs.") | |
1772 | (feature) | |
1773 | Lisp_Object feature; | |
1774 | { | |
1775 | register Lisp_Object tem; | |
1776 | CHECK_SYMBOL (feature, 0); | |
265a9e55 | 1777 | if (!NILP (Vautoload_queue)) |
7b863bd5 JB |
1778 | Vautoload_queue = Fcons (Fcons (Vfeatures, Qnil), Vautoload_queue); |
1779 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 1780 | if (NILP (tem)) |
7b863bd5 | 1781 | Vfeatures = Fcons (feature, Vfeatures); |
68732608 | 1782 | LOADHIST_ATTACH (Fcons (Qprovide, feature)); |
7b863bd5 JB |
1783 | return feature; |
1784 | } | |
1785 | ||
1786 | DEFUN ("require", Frequire, Srequire, 1, 2, 0, | |
1787 | "If feature FEATURE is not loaded, load it from FILENAME.\n\ | |
1788 | If FEATURE is not a member of the list `features', then the feature\n\ | |
1789 | is not loaded; so load the file FILENAME.\n\ | |
1790 | If FILENAME is omitted, the printname of FEATURE is used as the file name.") | |
1791 | (feature, file_name) | |
1792 | Lisp_Object feature, file_name; | |
1793 | { | |
1794 | register Lisp_Object tem; | |
1795 | CHECK_SYMBOL (feature, 0); | |
1796 | tem = Fmemq (feature, Vfeatures); | |
68732608 | 1797 | LOADHIST_ATTACH (Fcons (Qrequire, feature)); |
265a9e55 | 1798 | if (NILP (tem)) |
7b863bd5 JB |
1799 | { |
1800 | int count = specpdl_ptr - specpdl; | |
1801 | ||
1802 | /* Value saved here is to be restored into Vautoload_queue */ | |
1803 | record_unwind_protect (un_autoload, Vautoload_queue); | |
1804 | Vautoload_queue = Qt; | |
1805 | ||
265a9e55 | 1806 | Fload (NILP (file_name) ? Fsymbol_name (feature) : file_name, |
7b863bd5 JB |
1807 | Qnil, Qt, Qnil); |
1808 | ||
1809 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 1810 | if (NILP (tem)) |
7b863bd5 JB |
1811 | error ("Required feature %s was not provided", |
1812 | XSYMBOL (feature)->name->data ); | |
1813 | ||
1814 | /* Once loading finishes, don't undo it. */ | |
1815 | Vautoload_queue = Qt; | |
1816 | feature = unbind_to (count, feature); | |
1817 | } | |
1818 | return feature; | |
1819 | } | |
1820 | \f | |
1821 | syms_of_fns () | |
1822 | { | |
1823 | Qstring_lessp = intern ("string-lessp"); | |
1824 | staticpro (&Qstring_lessp); | |
68732608 RS |
1825 | Qprovide = intern ("provide"); |
1826 | staticpro (&Qprovide); | |
1827 | Qrequire = intern ("require"); | |
1828 | staticpro (&Qrequire); | |
0ce830bc RS |
1829 | Qyes_or_no_p_history = intern ("yes-or-no-p-history"); |
1830 | staticpro (&Qyes_or_no_p_history); | |
eb4ffa4e RS |
1831 | Qcursor_in_echo_area = intern ("cursor-in-echo-area"); |
1832 | staticpro (&Qcursor_in_echo_area); | |
7b863bd5 | 1833 | |
52a9879b RS |
1834 | Fset (Qyes_or_no_p_history, Qnil); |
1835 | ||
7b863bd5 JB |
1836 | DEFVAR_LISP ("features", &Vfeatures, |
1837 | "A list of symbols which are the features of the executing emacs.\n\ | |
1838 | Used by `featurep' and `require', and altered by `provide'."); | |
1839 | Vfeatures = Qnil; | |
1840 | ||
1841 | defsubr (&Sidentity); | |
1842 | defsubr (&Srandom); | |
1843 | defsubr (&Slength); | |
5a30fab8 | 1844 | defsubr (&Ssafe_length); |
7b863bd5 JB |
1845 | defsubr (&Sstring_equal); |
1846 | defsubr (&Sstring_lessp); | |
1847 | defsubr (&Sappend); | |
1848 | defsubr (&Sconcat); | |
1849 | defsubr (&Svconcat); | |
1850 | defsubr (&Scopy_sequence); | |
1851 | defsubr (&Scopy_alist); | |
1852 | defsubr (&Ssubstring); | |
1853 | defsubr (&Snthcdr); | |
1854 | defsubr (&Snth); | |
1855 | defsubr (&Selt); | |
1856 | defsubr (&Smember); | |
1857 | defsubr (&Smemq); | |
1858 | defsubr (&Sassq); | |
1859 | defsubr (&Sassoc); | |
1860 | defsubr (&Srassq); | |
0fb5a19c | 1861 | defsubr (&Srassoc); |
7b863bd5 | 1862 | defsubr (&Sdelq); |
ca8dd546 | 1863 | defsubr (&Sdelete); |
7b863bd5 JB |
1864 | defsubr (&Snreverse); |
1865 | defsubr (&Sreverse); | |
1866 | defsubr (&Ssort); | |
be9d483d | 1867 | defsubr (&Splist_get); |
7b863bd5 | 1868 | defsubr (&Sget); |
be9d483d | 1869 | defsubr (&Splist_put); |
7b863bd5 JB |
1870 | defsubr (&Sput); |
1871 | defsubr (&Sequal); | |
1872 | defsubr (&Sfillarray); | |
999de246 | 1873 | defsubr (&Schar_table_subtype); |
e03f7933 RS |
1874 | defsubr (&Schar_table_parent); |
1875 | defsubr (&Sset_char_table_parent); | |
1876 | defsubr (&Schar_table_extra_slot); | |
1877 | defsubr (&Sset_char_table_extra_slot); | |
999de246 | 1878 | defsubr (&Schar_table_range); |
e03f7933 RS |
1879 | defsubr (&Sset_char_table_range); |
1880 | defsubr (&Smap_char_table); | |
7b863bd5 JB |
1881 | defsubr (&Snconc); |
1882 | defsubr (&Smapcar); | |
1883 | defsubr (&Smapconcat); | |
1884 | defsubr (&Sy_or_n_p); | |
1885 | defsubr (&Syes_or_no_p); | |
1886 | defsubr (&Sload_average); | |
1887 | defsubr (&Sfeaturep); | |
1888 | defsubr (&Srequire); | |
1889 | defsubr (&Sprovide); | |
1890 | } |