Commit | Line | Data |
---|---|---|
7921925c | 1 | /* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter. |
0220c518 | 2 | Copyright (C) 1985, 86, 88, 93, 94, 95 Free Software Foundation, Inc. |
7921925c 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 | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
7921925c | 24 | #include "lisp.h" |
29eab336 | 25 | #include "puresize.h" |
7921925c JB |
26 | |
27 | #ifndef standalone | |
28 | #include "buffer.h" | |
29 | #endif | |
30 | ||
a44804c2 | 31 | #include "syssignal.h" |
fb8e9847 | 32 | |
aaf45c7b | 33 | #ifdef MSDOS |
6ba93f9d | 34 | /* These are redefined (correctly, but differently) in values.h. */ |
aaf45c7b RS |
35 | #undef INTBITS |
36 | #undef LONGBITS | |
37 | #undef SHORTBITS | |
38 | #endif | |
aaf45c7b | 39 | |
7921925c | 40 | #ifdef LISP_FLOAT_TYPE |
defa77b5 | 41 | |
93b91208 JB |
42 | #ifdef STDC_HEADERS |
43 | #include <stdlib.h> | |
44 | #endif | |
defa77b5 RS |
45 | |
46 | /* Work around a problem that happens because math.h on hpux 7 | |
47 | defines two static variables--which, in Emacs, are not really static, | |
48 | because `static' is defined as nothing. The problem is that they are | |
49 | here, in floatfns.c, and in lread.c. | |
50 | These macros prevent the name conflict. */ | |
51 | #if defined (HPUX) && !defined (HPUX8) | |
52 | #define _MAXLDBL data_c_maxldbl | |
53 | #define _NMAXLDBL data_c_nmaxldbl | |
54 | #endif | |
55 | ||
7921925c JB |
56 | #include <math.h> |
57 | #endif /* LISP_FLOAT_TYPE */ | |
58 | ||
024ec58f BF |
59 | #if !defined (atof) |
60 | extern double atof (); | |
61 | #endif /* !atof */ | |
62 | ||
7921925c JB |
63 | Lisp_Object Qnil, Qt, Qquote, Qlambda, Qsubr, Qunbound; |
64 | Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; | |
65 | Lisp_Object Qerror, Qquit, Qwrong_type_argument, Qargs_out_of_range; | |
ffd56f97 | 66 | Lisp_Object Qvoid_variable, Qvoid_function, Qcyclic_function_indirection; |
7921925c JB |
67 | Lisp_Object Qsetting_constant, Qinvalid_read_syntax; |
68 | Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; | |
3b8819d6 | 69 | Lisp_Object Qend_of_file, Qarith_error, Qmark_inactive; |
7921925c | 70 | Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
8e86942b | 71 | Lisp_Object Qintegerp, Qnatnump, Qwholenump, Qsymbolp, Qlistp, Qconsp; |
7921925c JB |
72 | Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp; |
73 | Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp; | |
07bd8472 | 74 | Lisp_Object Qbuffer_or_string_p; |
7921925c JB |
75 | Lisp_Object Qboundp, Qfboundp; |
76 | Lisp_Object Qcdr; | |
ab297811 | 77 | Lisp_Object Qad_advice_info, Qad_activate; |
7921925c | 78 | |
6315e761 RS |
79 | Lisp_Object Qrange_error, Qdomain_error, Qsingularity_error; |
80 | Lisp_Object Qoverflow_error, Qunderflow_error; | |
81 | ||
7921925c | 82 | #ifdef LISP_FLOAT_TYPE |
464f8898 | 83 | Lisp_Object Qfloatp; |
7921925c JB |
84 | Lisp_Object Qnumberp, Qnumber_or_marker_p; |
85 | #endif | |
86 | ||
87 | static Lisp_Object swap_in_symval_forwarding (); | |
88 | ||
89 | Lisp_Object | |
90 | wrong_type_argument (predicate, value) | |
91 | register Lisp_Object predicate, value; | |
92 | { | |
93 | register Lisp_Object tem; | |
94 | do | |
95 | { | |
96 | if (!EQ (Vmocklisp_arguments, Qt)) | |
97 | { | |
e9ebc175 | 98 | if (STRINGP (value) && |
7921925c | 99 | (EQ (predicate, Qintegerp) || EQ (predicate, Qinteger_or_marker_p))) |
25e40a4b | 100 | return Fstring_to_number (value); |
e9ebc175 | 101 | if (INTEGERP (value) && EQ (predicate, Qstringp)) |
f2980264 | 102 | return Fnumber_to_string (value); |
7921925c | 103 | } |
e1351ff7 RS |
104 | |
105 | /* If VALUE is not even a valid Lisp object, abort here | |
106 | where we can get a backtrace showing where it came from. */ | |
04be3993 | 107 | if ((unsigned int) XGCTYPE (value) >= Lisp_Type_Limit) |
e1351ff7 RS |
108 | abort (); |
109 | ||
7921925c JB |
110 | value = Fsignal (Qwrong_type_argument, Fcons (predicate, Fcons (value, Qnil))); |
111 | tem = call1 (predicate, value); | |
112 | } | |
a33ef3ab | 113 | while (NILP (tem)); |
7921925c JB |
114 | return value; |
115 | } | |
116 | ||
117 | pure_write_error () | |
118 | { | |
119 | error ("Attempt to modify read-only object"); | |
120 | } | |
121 | ||
122 | void | |
123 | args_out_of_range (a1, a2) | |
124 | Lisp_Object a1, a2; | |
125 | { | |
126 | while (1) | |
127 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Qnil))); | |
128 | } | |
129 | ||
130 | void | |
131 | args_out_of_range_3 (a1, a2, a3) | |
132 | Lisp_Object a1, a2, a3; | |
133 | { | |
134 | while (1) | |
135 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Fcons (a3, Qnil)))); | |
136 | } | |
137 | ||
138 | Lisp_Object | |
139 | make_number (num) | |
140 | int num; | |
141 | { | |
142 | register Lisp_Object val; | |
f187f1f7 | 143 | XSETINT (val, num); |
7921925c JB |
144 | return val; |
145 | } | |
146 | ||
147 | /* On some machines, XINT needs a temporary location. | |
148 | Here it is, in case it is needed. */ | |
149 | ||
150 | int sign_extend_temp; | |
151 | ||
152 | /* On a few machines, XINT can only be done by calling this. */ | |
153 | ||
154 | int | |
155 | sign_extend_lisp_int (num) | |
a0ed95ea | 156 | EMACS_INT num; |
7921925c | 157 | { |
a0ed95ea RS |
158 | if (num & (((EMACS_INT) 1) << (VALBITS - 1))) |
159 | return num | (((EMACS_INT) (-1)) << VALBITS); | |
7921925c | 160 | else |
a0ed95ea | 161 | return num & ((((EMACS_INT) 1) << VALBITS) - 1); |
7921925c JB |
162 | } |
163 | \f | |
164 | /* Data type predicates */ | |
165 | ||
166 | DEFUN ("eq", Feq, Seq, 2, 2, 0, | |
167 | "T if the two args are the same Lisp object.") | |
168 | (obj1, obj2) | |
169 | Lisp_Object obj1, obj2; | |
170 | { | |
171 | if (EQ (obj1, obj2)) | |
172 | return Qt; | |
173 | return Qnil; | |
174 | } | |
175 | ||
176 | DEFUN ("null", Fnull, Snull, 1, 1, 0, "T if OBJECT is nil.") | |
177 | (obj) | |
178 | Lisp_Object obj; | |
179 | { | |
a33ef3ab | 180 | if (NILP (obj)) |
7921925c JB |
181 | return Qt; |
182 | return Qnil; | |
183 | } | |
184 | ||
185 | DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0, "T if OBJECT is a cons cell.") | |
186 | (obj) | |
187 | Lisp_Object obj; | |
188 | { | |
e9ebc175 | 189 | if (CONSP (obj)) |
7921925c JB |
190 | return Qt; |
191 | return Qnil; | |
192 | } | |
193 | ||
194 | DEFUN ("atom", Fatom, Satom, 1, 1, 0, "T if OBJECT is not a cons cell. This includes nil.") | |
195 | (obj) | |
196 | Lisp_Object obj; | |
197 | { | |
e9ebc175 | 198 | if (CONSP (obj)) |
7921925c JB |
199 | return Qnil; |
200 | return Qt; | |
201 | } | |
202 | ||
203 | DEFUN ("listp", Flistp, Slistp, 1, 1, 0, "T if OBJECT is a list. This includes nil.") | |
204 | (obj) | |
205 | Lisp_Object obj; | |
206 | { | |
e9ebc175 | 207 | if (CONSP (obj) || NILP (obj)) |
7921925c JB |
208 | return Qt; |
209 | return Qnil; | |
210 | } | |
211 | ||
212 | DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0, "T if OBJECT is not a list. Lists include nil.") | |
213 | (obj) | |
214 | Lisp_Object obj; | |
215 | { | |
e9ebc175 | 216 | if (CONSP (obj) || NILP (obj)) |
7921925c JB |
217 | return Qnil; |
218 | return Qt; | |
219 | } | |
220 | \f | |
221 | DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0, "T if OBJECT is a symbol.") | |
222 | (obj) | |
223 | Lisp_Object obj; | |
224 | { | |
e9ebc175 | 225 | if (SYMBOLP (obj)) |
7921925c JB |
226 | return Qt; |
227 | return Qnil; | |
228 | } | |
229 | ||
230 | DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0, "T if OBJECT is a vector.") | |
231 | (obj) | |
232 | Lisp_Object obj; | |
233 | { | |
e9ebc175 | 234 | if (VECTORP (obj)) |
7921925c JB |
235 | return Qt; |
236 | return Qnil; | |
237 | } | |
238 | ||
239 | DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0, "T if OBJECT is a string.") | |
240 | (obj) | |
241 | Lisp_Object obj; | |
242 | { | |
e9ebc175 | 243 | if (STRINGP (obj)) |
7921925c JB |
244 | return Qt; |
245 | return Qnil; | |
246 | } | |
247 | ||
248 | DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0, "T if OBJECT is an array (string or vector).") | |
249 | (obj) | |
250 | Lisp_Object obj; | |
251 | { | |
e9ebc175 | 252 | if (VECTORP (obj) || STRINGP (obj)) |
7921925c JB |
253 | return Qt; |
254 | return Qnil; | |
255 | } | |
256 | ||
257 | DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0, | |
258 | "T if OBJECT is a sequence (list or array).") | |
259 | (obj) | |
260 | register Lisp_Object obj; | |
261 | { | |
e9ebc175 | 262 | if (CONSP (obj) || NILP (obj) || VECTORP (obj) || STRINGP (obj)) |
7921925c JB |
263 | return Qt; |
264 | return Qnil; | |
265 | } | |
266 | ||
267 | DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0, "T if OBJECT is an editor buffer.") | |
268 | (obj) | |
269 | Lisp_Object obj; | |
270 | { | |
e9ebc175 | 271 | if (BUFFERP (obj)) |
7921925c JB |
272 | return Qt; |
273 | return Qnil; | |
274 | } | |
275 | ||
276 | DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0, "T if OBJECT is a marker (editor pointer).") | |
277 | (obj) | |
278 | Lisp_Object obj; | |
279 | { | |
e9ebc175 | 280 | if (MARKERP (obj)) |
7921925c JB |
281 | return Qt; |
282 | return Qnil; | |
283 | } | |
284 | ||
7921925c JB |
285 | DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0, "T if OBJECT is a built-in function.") |
286 | (obj) | |
287 | Lisp_Object obj; | |
288 | { | |
e9ebc175 | 289 | if (SUBRP (obj)) |
7921925c JB |
290 | return Qt; |
291 | return Qnil; | |
292 | } | |
293 | ||
dbc4e1c1 JB |
294 | DEFUN ("byte-code-function-p", Fbyte_code_function_p, Sbyte_code_function_p, |
295 | 1, 1, 0, "T if OBJECT is a byte-compiled function object.") | |
7921925c JB |
296 | (obj) |
297 | Lisp_Object obj; | |
298 | { | |
e9ebc175 | 299 | if (COMPILEDP (obj)) |
7921925c JB |
300 | return Qt; |
301 | return Qnil; | |
302 | } | |
303 | ||
0321d75c KH |
304 | DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0, |
305 | "T if OBJECT is a character (an integer) or a string.") | |
7921925c JB |
306 | (obj) |
307 | register Lisp_Object obj; | |
308 | { | |
e9ebc175 | 309 | if (INTEGERP (obj) || STRINGP (obj)) |
7921925c JB |
310 | return Qt; |
311 | return Qnil; | |
312 | } | |
313 | \f | |
0321d75c | 314 | DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0, "T if OBJECT is an integer.") |
7921925c JB |
315 | (obj) |
316 | Lisp_Object obj; | |
317 | { | |
e9ebc175 | 318 | if (INTEGERP (obj)) |
7921925c JB |
319 | return Qt; |
320 | return Qnil; | |
321 | } | |
322 | ||
464f8898 RS |
323 | DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p, 1, 1, 0, |
324 | "T if OBJECT is an integer or a marker (editor pointer).") | |
7921925c | 325 | (obj) |
464f8898 | 326 | register Lisp_Object obj; |
7921925c | 327 | { |
e9ebc175 | 328 | if (MARKERP (obj) || INTEGERP (obj)) |
7921925c JB |
329 | return Qt; |
330 | return Qnil; | |
331 | } | |
332 | ||
0321d75c KH |
333 | DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0, |
334 | "T if OBJECT is a nonnegative integer.") | |
7921925c JB |
335 | (obj) |
336 | Lisp_Object obj; | |
337 | { | |
c80bd143 | 338 | if (NATNUMP (obj)) |
7921925c JB |
339 | return Qt; |
340 | return Qnil; | |
341 | } | |
342 | ||
343 | DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0, | |
344 | "T if OBJECT is a number (floating point or integer).") | |
345 | (obj) | |
346 | Lisp_Object obj; | |
347 | { | |
dbc4e1c1 | 348 | if (NUMBERP (obj)) |
7921925c | 349 | return Qt; |
dbc4e1c1 JB |
350 | else |
351 | return Qnil; | |
7921925c JB |
352 | } |
353 | ||
354 | DEFUN ("number-or-marker-p", Fnumber_or_marker_p, | |
355 | Snumber_or_marker_p, 1, 1, 0, | |
356 | "T if OBJECT is a number or a marker.") | |
357 | (obj) | |
358 | Lisp_Object obj; | |
359 | { | |
e9ebc175 | 360 | if (NUMBERP (obj) || MARKERP (obj)) |
7921925c JB |
361 | return Qt; |
362 | return Qnil; | |
363 | } | |
464f8898 RS |
364 | |
365 | #ifdef LISP_FLOAT_TYPE | |
366 | DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0, | |
367 | "T if OBJECT is a floating point number.") | |
368 | (obj) | |
369 | Lisp_Object obj; | |
370 | { | |
e9ebc175 | 371 | if (FLOATP (obj)) |
464f8898 RS |
372 | return Qt; |
373 | return Qnil; | |
374 | } | |
7921925c JB |
375 | #endif /* LISP_FLOAT_TYPE */ |
376 | \f | |
377 | /* Extract and set components of lists */ | |
378 | ||
379 | DEFUN ("car", Fcar, Scar, 1, 1, 0, | |
380 | "Return the car of CONSCELL. If arg is nil, return nil.\n\ | |
381 | Error if arg is not nil and not a cons cell. See also `car-safe'.") | |
382 | (list) | |
383 | register Lisp_Object list; | |
384 | { | |
385 | while (1) | |
386 | { | |
e9ebc175 | 387 | if (CONSP (list)) |
7921925c JB |
388 | return XCONS (list)->car; |
389 | else if (EQ (list, Qnil)) | |
390 | return Qnil; | |
391 | else | |
392 | list = wrong_type_argument (Qlistp, list); | |
393 | } | |
394 | } | |
395 | ||
396 | DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0, | |
397 | "Return the car of OBJECT if it is a cons cell, or else nil.") | |
398 | (object) | |
399 | Lisp_Object object; | |
400 | { | |
e9ebc175 | 401 | if (CONSP (object)) |
7921925c JB |
402 | return XCONS (object)->car; |
403 | else | |
404 | return Qnil; | |
405 | } | |
406 | ||
407 | DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0, | |
408 | "Return the cdr of CONSCELL. If arg is nil, return nil.\n\ | |
409 | Error if arg is not nil and not a cons cell. See also `cdr-safe'.") | |
410 | ||
411 | (list) | |
412 | register Lisp_Object list; | |
413 | { | |
414 | while (1) | |
415 | { | |
e9ebc175 | 416 | if (CONSP (list)) |
7921925c JB |
417 | return XCONS (list)->cdr; |
418 | else if (EQ (list, Qnil)) | |
419 | return Qnil; | |
420 | else | |
421 | list = wrong_type_argument (Qlistp, list); | |
422 | } | |
423 | } | |
424 | ||
425 | DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0, | |
b7abc8fa | 426 | "Return the cdr of OBJECT if it is a cons cell, or else nil.") |
7921925c JB |
427 | (object) |
428 | Lisp_Object object; | |
429 | { | |
e9ebc175 | 430 | if (CONSP (object)) |
7921925c JB |
431 | return XCONS (object)->cdr; |
432 | else | |
433 | return Qnil; | |
434 | } | |
435 | ||
436 | DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0, | |
437 | "Set the car of CONSCELL to be NEWCAR. Returns NEWCAR.") | |
438 | (cell, newcar) | |
439 | register Lisp_Object cell, newcar; | |
440 | { | |
e9ebc175 | 441 | if (!CONSP (cell)) |
7921925c JB |
442 | cell = wrong_type_argument (Qconsp, cell); |
443 | ||
444 | CHECK_IMPURE (cell); | |
445 | XCONS (cell)->car = newcar; | |
446 | return newcar; | |
447 | } | |
448 | ||
449 | DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0, | |
450 | "Set the cdr of CONSCELL to be NEWCDR. Returns NEWCDR.") | |
451 | (cell, newcdr) | |
452 | register Lisp_Object cell, newcdr; | |
453 | { | |
e9ebc175 | 454 | if (!CONSP (cell)) |
7921925c JB |
455 | cell = wrong_type_argument (Qconsp, cell); |
456 | ||
457 | CHECK_IMPURE (cell); | |
458 | XCONS (cell)->cdr = newcdr; | |
459 | return newcdr; | |
460 | } | |
461 | \f | |
462 | /* Extract and set components of symbols */ | |
463 | ||
464 | DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0, "T if SYMBOL's value is not void.") | |
465 | (sym) | |
466 | register Lisp_Object sym; | |
467 | { | |
468 | Lisp_Object valcontents; | |
469 | CHECK_SYMBOL (sym, 0); | |
470 | ||
471 | valcontents = XSYMBOL (sym)->value; | |
472 | ||
aabf6bec KH |
473 | if (BUFFER_LOCAL_VALUEP (valcontents) |
474 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
536b772a | 475 | valcontents = swap_in_symval_forwarding (sym, valcontents); |
7921925c | 476 | |
1bfcade3 | 477 | return (EQ (valcontents, Qunbound) ? Qnil : Qt); |
7921925c JB |
478 | } |
479 | ||
480 | DEFUN ("fboundp", Ffboundp, Sfboundp, 1, 1, 0, "T if SYMBOL's function definition is not void.") | |
481 | (sym) | |
482 | register Lisp_Object sym; | |
483 | { | |
484 | CHECK_SYMBOL (sym, 0); | |
1bfcade3 | 485 | return (EQ (XSYMBOL (sym)->function, Qunbound) ? Qnil : Qt); |
7921925c JB |
486 | } |
487 | ||
488 | DEFUN ("makunbound", Fmakunbound, Smakunbound, 1, 1, 0, "Make SYMBOL's value be void.") | |
489 | (sym) | |
490 | register Lisp_Object sym; | |
491 | { | |
492 | CHECK_SYMBOL (sym, 0); | |
a33ef3ab | 493 | if (NILP (sym) || EQ (sym, Qt)) |
7921925c JB |
494 | return Fsignal (Qsetting_constant, Fcons (sym, Qnil)); |
495 | Fset (sym, Qunbound); | |
496 | return sym; | |
497 | } | |
498 | ||
499 | DEFUN ("fmakunbound", Ffmakunbound, Sfmakunbound, 1, 1, 0, "Make SYMBOL's function definition be void.") | |
500 | (sym) | |
501 | register Lisp_Object sym; | |
502 | { | |
503 | CHECK_SYMBOL (sym, 0); | |
c15c5d40 KH |
504 | if (NILP (sym) || EQ (sym, Qt)) |
505 | return Fsignal (Qsetting_constant, Fcons (sym, Qnil)); | |
7921925c JB |
506 | XSYMBOL (sym)->function = Qunbound; |
507 | return sym; | |
508 | } | |
509 | ||
510 | DEFUN ("symbol-function", Fsymbol_function, Ssymbol_function, 1, 1, 0, | |
511 | "Return SYMBOL's function definition. Error if that is void.") | |
ffd56f97 JB |
512 | (symbol) |
513 | register Lisp_Object symbol; | |
7921925c | 514 | { |
ffd56f97 JB |
515 | CHECK_SYMBOL (symbol, 0); |
516 | if (EQ (XSYMBOL (symbol)->function, Qunbound)) | |
517 | return Fsignal (Qvoid_function, Fcons (symbol, Qnil)); | |
518 | return XSYMBOL (symbol)->function; | |
7921925c JB |
519 | } |
520 | ||
521 | DEFUN ("symbol-plist", Fsymbol_plist, Ssymbol_plist, 1, 1, 0, "Return SYMBOL's property list.") | |
522 | (sym) | |
523 | register Lisp_Object sym; | |
524 | { | |
525 | CHECK_SYMBOL (sym, 0); | |
526 | return XSYMBOL (sym)->plist; | |
527 | } | |
528 | ||
529 | DEFUN ("symbol-name", Fsymbol_name, Ssymbol_name, 1, 1, 0, "Return SYMBOL's name, a string.") | |
530 | (sym) | |
531 | register Lisp_Object sym; | |
532 | { | |
533 | register Lisp_Object name; | |
534 | ||
535 | CHECK_SYMBOL (sym, 0); | |
f187f1f7 | 536 | XSETSTRING (name, XSYMBOL (sym)->name); |
7921925c JB |
537 | return name; |
538 | } | |
539 | ||
540 | DEFUN ("fset", Ffset, Sfset, 2, 2, 0, | |
541 | "Set SYMBOL's function definition to NEWVAL, and return NEWVAL.") | |
542 | (sym, newdef) | |
543 | register Lisp_Object sym, newdef; | |
544 | { | |
545 | CHECK_SYMBOL (sym, 0); | |
c15c5d40 KH |
546 | if (NILP (sym) || EQ (sym, Qt)) |
547 | return Fsignal (Qsetting_constant, Fcons (sym, Qnil)); | |
a33ef3ab | 548 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (sym)->function, Qunbound)) |
7921925c JB |
549 | Vautoload_queue = Fcons (Fcons (sym, XSYMBOL (sym)->function), |
550 | Vautoload_queue); | |
551 | XSYMBOL (sym)->function = newdef; | |
f845f2c9 | 552 | /* Handle automatic advice activation */ |
ab297811 | 553 | if (CONSP (XSYMBOL (sym)->plist) && !NILP (Fget (sym, Qad_advice_info))) |
f845f2c9 | 554 | { |
ab297811 | 555 | call2 (Qad_activate, sym, Qnil); |
f845f2c9 RS |
556 | newdef = XSYMBOL (sym)->function; |
557 | } | |
7921925c JB |
558 | return newdef; |
559 | } | |
560 | ||
d9bcdb34 RS |
561 | /* This name should be removed once it is eliminated from elsewhere. */ |
562 | ||
80df38a2 | 563 | DEFUN ("defalias", Fdefalias, Sdefalias, 2, 2, 0, |
fc08c367 RS |
564 | "Set SYMBOL's function definition to NEWVAL, and return NEWVAL.\n\ |
565 | Associates the function with the current load file, if any.") | |
566 | (sym, newdef) | |
567 | register Lisp_Object sym, newdef; | |
568 | { | |
569 | CHECK_SYMBOL (sym, 0); | |
570 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (sym)->function, Qunbound)) | |
571 | Vautoload_queue = Fcons (Fcons (sym, XSYMBOL (sym)->function), | |
572 | Vautoload_queue); | |
573 | XSYMBOL (sym)->function = newdef; | |
ab297811 RS |
574 | /* Handle automatic advice activation */ |
575 | if (CONSP (XSYMBOL (sym)->plist) && !NILP (Fget (sym, Qad_advice_info))) | |
576 | { | |
577 | call2 (Qad_activate, sym, Qnil); | |
578 | newdef = XSYMBOL (sym)->function; | |
579 | } | |
fc08c367 RS |
580 | LOADHIST_ATTACH (sym); |
581 | return newdef; | |
582 | } | |
583 | ||
d9bcdb34 RS |
584 | DEFUN ("define-function", Fdefine_function, Sdefine_function, 2, 2, 0, |
585 | "Set SYMBOL's function definition to NEWVAL, and return NEWVAL.\n\ | |
586 | Associates the function with the current load file, if any.") | |
587 | (sym, newdef) | |
588 | register Lisp_Object sym, newdef; | |
589 | { | |
590 | CHECK_SYMBOL (sym, 0); | |
591 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (sym)->function, Qunbound)) | |
592 | Vautoload_queue = Fcons (Fcons (sym, XSYMBOL (sym)->function), | |
593 | Vautoload_queue); | |
594 | XSYMBOL (sym)->function = newdef; | |
ab297811 RS |
595 | /* Handle automatic advice activation */ |
596 | if (CONSP (XSYMBOL (sym)->plist) && !NILP (Fget (sym, Qad_advice_info))) | |
597 | { | |
598 | call2 (Qad_activate, sym, Qnil); | |
599 | newdef = XSYMBOL (sym)->function; | |
600 | } | |
d9bcdb34 RS |
601 | LOADHIST_ATTACH (sym); |
602 | return newdef; | |
603 | } | |
604 | ||
7921925c JB |
605 | DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0, |
606 | "Set SYMBOL's property list to NEWVAL, and return NEWVAL.") | |
607 | (sym, newplist) | |
608 | register Lisp_Object sym, newplist; | |
609 | { | |
610 | CHECK_SYMBOL (sym, 0); | |
611 | XSYMBOL (sym)->plist = newplist; | |
612 | return newplist; | |
613 | } | |
ffd56f97 | 614 | |
7921925c JB |
615 | \f |
616 | /* Getting and setting values of symbols */ | |
617 | ||
618 | /* Given the raw contents of a symbol value cell, | |
619 | return the Lisp value of the symbol. | |
620 | This does not handle buffer-local variables; use | |
621 | swap_in_symval_forwarding for that. */ | |
622 | ||
623 | Lisp_Object | |
624 | do_symval_forwarding (valcontents) | |
625 | register Lisp_Object valcontents; | |
626 | { | |
627 | register Lisp_Object val; | |
46b2ac21 KH |
628 | int offset; |
629 | if (MISCP (valcontents)) | |
630 | switch (XMISC (valcontents)->type) | |
631 | { | |
632 | case Lisp_Misc_Intfwd: | |
633 | XSETINT (val, *XINTFWD (valcontents)->intvar); | |
634 | return val; | |
7921925c | 635 | |
46b2ac21 KH |
636 | case Lisp_Misc_Boolfwd: |
637 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); | |
7921925c | 638 | |
46b2ac21 KH |
639 | case Lisp_Misc_Objfwd: |
640 | return *XOBJFWD (valcontents)->objvar; | |
7921925c | 641 | |
46b2ac21 KH |
642 | case Lisp_Misc_Buffer_Objfwd: |
643 | offset = XBUFFER_OBJFWD (valcontents)->offset; | |
644 | return *(Lisp_Object *)(offset + (char *)current_buffer); | |
7403b5c8 KH |
645 | |
646 | case Lisp_Misc_Display_Objfwd: | |
31c45e79 KH |
647 | if (!current_perdisplay) |
648 | abort (); | |
7403b5c8 | 649 | offset = XDISPLAY_OBJFWD (valcontents)->offset; |
31c45e79 | 650 | return *(Lisp_Object *)(offset + (char *)current_perdisplay); |
46b2ac21 | 651 | } |
7921925c JB |
652 | return valcontents; |
653 | } | |
654 | ||
655 | /* Store NEWVAL into SYM, where VALCONTENTS is found in the value cell | |
656 | of SYM. If SYM is buffer-local, VALCONTENTS should be the | |
657 | buffer-independent contents of the value cell: forwarded just one | |
658 | step past the buffer-localness. */ | |
659 | ||
660 | void | |
661 | store_symval_forwarding (sym, valcontents, newval) | |
662 | Lisp_Object sym; | |
663 | register Lisp_Object valcontents, newval; | |
664 | { | |
0220c518 | 665 | switch (SWITCH_ENUM_CAST (XTYPE (valcontents))) |
7921925c | 666 | { |
46b2ac21 KH |
667 | case Lisp_Misc: |
668 | switch (XMISC (valcontents)->type) | |
669 | { | |
670 | case Lisp_Misc_Intfwd: | |
671 | CHECK_NUMBER (newval, 1); | |
672 | *XINTFWD (valcontents)->intvar = XINT (newval); | |
673 | break; | |
674 | ||
675 | case Lisp_Misc_Boolfwd: | |
676 | *XBOOLFWD (valcontents)->boolvar = NILP (newval) ? 0 : 1; | |
677 | break; | |
678 | ||
679 | case Lisp_Misc_Objfwd: | |
680 | *XOBJFWD (valcontents)->objvar = newval; | |
681 | break; | |
682 | ||
683 | case Lisp_Misc_Buffer_Objfwd: | |
684 | { | |
685 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
686 | Lisp_Object type; | |
687 | ||
688 | type = *(Lisp_Object *)(offset + (char *)&buffer_local_types); | |
689 | if (! NILP (type) && ! NILP (newval) | |
690 | && XTYPE (newval) != XINT (type)) | |
691 | buffer_slot_type_mismatch (offset); | |
692 | ||
693 | *(Lisp_Object *)(offset + (char *)current_buffer) = newval; | |
46b2ac21 | 694 | } |
7403b5c8 KH |
695 | break; |
696 | ||
697 | case Lisp_Misc_Display_Objfwd: | |
31c45e79 KH |
698 | if (!current_perdisplay) |
699 | abort (); | |
700 | (*(Lisp_Object *)((char *)current_perdisplay | |
7403b5c8 KH |
701 | + XDISPLAY_OBJFWD (valcontents)->offset)) |
702 | = newval; | |
703 | break; | |
704 | ||
46b2ac21 KH |
705 | default: |
706 | goto def; | |
707 | } | |
7921925c JB |
708 | break; |
709 | ||
7921925c | 710 | default: |
46b2ac21 | 711 | def: |
7921925c | 712 | valcontents = XSYMBOL (sym)->value; |
e9ebc175 KH |
713 | if (BUFFER_LOCAL_VALUEP (valcontents) |
714 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
8d4afcac | 715 | XBUFFER_LOCAL_VALUE (valcontents)->car = newval; |
7921925c JB |
716 | else |
717 | XSYMBOL (sym)->value = newval; | |
718 | } | |
719 | } | |
720 | ||
721 | /* Set up the buffer-local symbol SYM for validity in the current | |
722 | buffer. VALCONTENTS is the contents of its value cell. | |
723 | Return the value forwarded one step past the buffer-local indicator. */ | |
724 | ||
725 | static Lisp_Object | |
726 | swap_in_symval_forwarding (sym, valcontents) | |
727 | Lisp_Object sym, valcontents; | |
728 | { | |
7403b5c8 | 729 | /* valcontents is a pointer to a struct resembling the cons |
7921925c | 730 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE)). |
7403b5c8 | 731 | |
7921925c | 732 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's |
533984a8 JB |
733 | local_var_alist, that being the element whose car is this |
734 | variable. Or it can be a pointer to the | |
735 | (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER does not have | |
736 | an element in its alist for this variable. | |
737 | ||
738 | If the current buffer is not BUFFER, we store the current | |
739 | REALVALUE value into CURRENT-ALIST-ELEMENT, then find the | |
740 | appropriate alist element for the buffer now current and set up | |
741 | CURRENT-ALIST-ELEMENT. Then we set REALVALUE out of that | |
742 | element, and store into BUFFER. | |
743 | ||
7921925c JB |
744 | Note that REALVALUE can be a forwarding pointer. */ |
745 | ||
746 | register Lisp_Object tem1; | |
8d4afcac | 747 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; |
7921925c | 748 | |
a33ef3ab | 749 | if (NILP (tem1) || current_buffer != XBUFFER (tem1)) |
7921925c | 750 | { |
8d4afcac KH |
751 | tem1 = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
752 | Fsetcdr (tem1, | |
753 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car)); | |
7921925c | 754 | tem1 = assq_no_quit (sym, current_buffer->local_var_alist); |
a33ef3ab | 755 | if (NILP (tem1)) |
8d4afcac KH |
756 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr; |
757 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car = tem1; | |
758 | XSETBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car, | |
759 | current_buffer); | |
760 | store_symval_forwarding (sym, XBUFFER_LOCAL_VALUE (valcontents)->car, | |
761 | Fcdr (tem1)); | |
7921925c | 762 | } |
8d4afcac | 763 | return XBUFFER_LOCAL_VALUE (valcontents)->car; |
7921925c JB |
764 | } |
765 | \f | |
14e76af9 JB |
766 | /* Find the value of a symbol, returning Qunbound if it's not bound. |
767 | This is helpful for code which just wants to get a variable's value | |
768 | if it has one, without signalling an error. | |
769 | Note that it must not be possible to quit | |
770 | within this function. Great care is required for this. */ | |
7921925c | 771 | |
14e76af9 JB |
772 | Lisp_Object |
773 | find_symbol_value (sym) | |
7921925c JB |
774 | Lisp_Object sym; |
775 | { | |
776 | register Lisp_Object valcontents, tem1; | |
777 | register Lisp_Object val; | |
778 | CHECK_SYMBOL (sym, 0); | |
779 | valcontents = XSYMBOL (sym)->value; | |
780 | ||
aabf6bec KH |
781 | if (BUFFER_LOCAL_VALUEP (valcontents) |
782 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
536b772a | 783 | valcontents = swap_in_symval_forwarding (sym, valcontents); |
7921925c | 784 | |
536b772a KH |
785 | if (MISCP (valcontents)) |
786 | { | |
46b2ac21 KH |
787 | switch (XMISC (valcontents)->type) |
788 | { | |
789 | case Lisp_Misc_Intfwd: | |
790 | XSETINT (val, *XINTFWD (valcontents)->intvar); | |
791 | return val; | |
7921925c | 792 | |
46b2ac21 KH |
793 | case Lisp_Misc_Boolfwd: |
794 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); | |
7921925c | 795 | |
46b2ac21 KH |
796 | case Lisp_Misc_Objfwd: |
797 | return *XOBJFWD (valcontents)->objvar; | |
7921925c | 798 | |
46b2ac21 KH |
799 | case Lisp_Misc_Buffer_Objfwd: |
800 | return *(Lisp_Object *)(XBUFFER_OBJFWD (valcontents)->offset | |
801 | + (char *)current_buffer); | |
7403b5c8 KH |
802 | |
803 | case Lisp_Misc_Display_Objfwd: | |
31c45e79 KH |
804 | if (!current_perdisplay) |
805 | abort (); | |
7403b5c8 | 806 | return *(Lisp_Object *)(XDISPLAY_OBJFWD (valcontents)->offset |
31c45e79 | 807 | + (char *)current_perdisplay); |
46b2ac21 | 808 | } |
7921925c JB |
809 | } |
810 | ||
811 | return valcontents; | |
812 | } | |
813 | ||
14e76af9 JB |
814 | DEFUN ("symbol-value", Fsymbol_value, Ssymbol_value, 1, 1, 0, |
815 | "Return SYMBOL's value. Error if that is void.") | |
816 | (sym) | |
817 | Lisp_Object sym; | |
818 | { | |
0671d7c0 | 819 | Lisp_Object val; |
14e76af9 | 820 | |
0671d7c0 | 821 | val = find_symbol_value (sym); |
14e76af9 JB |
822 | if (EQ (val, Qunbound)) |
823 | return Fsignal (Qvoid_variable, Fcons (sym, Qnil)); | |
824 | else | |
825 | return val; | |
826 | } | |
827 | ||
7921925c JB |
828 | DEFUN ("set", Fset, Sset, 2, 2, 0, |
829 | "Set SYMBOL's value to NEWVAL, and return NEWVAL.") | |
830 | (sym, newval) | |
831 | register Lisp_Object sym, newval; | |
832 | { | |
1bfcade3 | 833 | int voide = EQ (newval, Qunbound); |
7921925c | 834 | |
7921925c | 835 | register Lisp_Object valcontents, tem1, current_alist_element; |
7921925c JB |
836 | |
837 | CHECK_SYMBOL (sym, 0); | |
a33ef3ab | 838 | if (NILP (sym) || EQ (sym, Qt)) |
7921925c JB |
839 | return Fsignal (Qsetting_constant, Fcons (sym, Qnil)); |
840 | valcontents = XSYMBOL (sym)->value; | |
841 | ||
e9ebc175 | 842 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 843 | { |
46b2ac21 | 844 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
865c050f KH |
845 | register int mask = XINT (*((Lisp_Object *) |
846 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
847 | if (mask > 0) |
848 | current_buffer->local_var_flags |= mask; | |
849 | } | |
850 | ||
e9ebc175 KH |
851 | else if (BUFFER_LOCAL_VALUEP (valcontents) |
852 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c | 853 | { |
8d4afcac KH |
854 | /* valcontents is actually a pointer to a struct resembling a cons, |
855 | with contents something like: | |
d8cafeb5 JB |
856 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE). |
857 | ||
858 | BUFFER is the last buffer for which this symbol's value was | |
859 | made up to date. | |
860 | ||
861 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's | |
862 | local_var_alist, that being the element whose car is this | |
863 | variable. Or it can be a pointer to the | |
864 | (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER does not | |
865 | have an element in its alist for this variable (that is, if | |
866 | BUFFER sees the default value of this variable). | |
867 | ||
868 | If we want to examine or set the value and BUFFER is current, | |
869 | we just examine or set REALVALUE. If BUFFER is not current, we | |
870 | store the current REALVALUE value into CURRENT-ALIST-ELEMENT, | |
871 | then find the appropriate alist element for the buffer now | |
872 | current and set up CURRENT-ALIST-ELEMENT. Then we set | |
873 | REALVALUE out of that element, and store into BUFFER. | |
874 | ||
875 | If we are setting the variable and the current buffer does | |
876 | not have an alist entry for this variable, an alist entry is | |
877 | created. | |
878 | ||
879 | Note that REALVALUE can be a forwarding pointer. Each time | |
880 | it is examined or set, forwarding must be done. */ | |
881 | ||
882 | /* What value are we caching right now? */ | |
883 | current_alist_element = | |
8d4afcac | 884 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
d8cafeb5 JB |
885 | |
886 | /* If the current buffer is not the buffer whose binding is | |
887 | currently cached, or if it's a Lisp_Buffer_Local_Value and | |
888 | we're looking at the default value, the cache is invalid; we | |
889 | need to write it out, and find the new CURRENT-ALIST-ELEMENT. */ | |
890 | if ((current_buffer | |
8d4afcac | 891 | != XBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car)) |
e9ebc175 | 892 | || (BUFFER_LOCAL_VALUEP (valcontents) |
b06faa91 JB |
893 | && EQ (XCONS (current_alist_element)->car, |
894 | current_alist_element))) | |
7921925c | 895 | { |
d8cafeb5 JB |
896 | /* Write out the cached value for the old buffer; copy it |
897 | back to its alist element. This works if the current | |
898 | buffer only sees the default value, too. */ | |
899 | Fsetcdr (current_alist_element, | |
8d4afcac | 900 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car)); |
7921925c | 901 | |
d8cafeb5 | 902 | /* Find the new value for CURRENT-ALIST-ELEMENT. */ |
7921925c | 903 | tem1 = Fassq (sym, current_buffer->local_var_alist); |
a33ef3ab | 904 | if (NILP (tem1)) |
d8cafeb5 JB |
905 | { |
906 | /* This buffer still sees the default value. */ | |
907 | ||
908 | /* If the variable is a Lisp_Some_Buffer_Local_Value, | |
909 | make CURRENT-ALIST-ELEMENT point to itself, | |
910 | indicating that we're seeing the default value. */ | |
e9ebc175 | 911 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
8d4afcac | 912 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr; |
d8cafeb5 JB |
913 | |
914 | /* If it's a Lisp_Buffer_Local_Value, give this buffer a | |
915 | new assoc for a local value and set | |
916 | CURRENT-ALIST-ELEMENT to point to that. */ | |
917 | else | |
918 | { | |
919 | tem1 = Fcons (sym, Fcdr (current_alist_element)); | |
920 | current_buffer->local_var_alist = | |
921 | Fcons (tem1, current_buffer->local_var_alist); | |
922 | } | |
923 | } | |
924 | /* Cache the new buffer's assoc in CURRENT-ALIST-ELEMENT. */ | |
8d4afcac KH |
925 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car |
926 | = tem1; | |
d8cafeb5 JB |
927 | |
928 | /* Set BUFFER, now that CURRENT-ALIST-ELEMENT is accurate. */ | |
8d4afcac KH |
929 | XSETBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car, |
930 | current_buffer); | |
7921925c | 931 | } |
8d4afcac | 932 | valcontents = XBUFFER_LOCAL_VALUE (valcontents)->car; |
7921925c | 933 | } |
d8cafeb5 | 934 | |
7921925c JB |
935 | /* If storing void (making the symbol void), forward only through |
936 | buffer-local indicator, not through Lisp_Objfwd, etc. */ | |
937 | if (voide) | |
938 | store_symval_forwarding (sym, Qnil, newval); | |
939 | else | |
940 | store_symval_forwarding (sym, valcontents, newval); | |
d8cafeb5 | 941 | |
7921925c JB |
942 | return newval; |
943 | } | |
944 | \f | |
945 | /* Access or set a buffer-local symbol's default value. */ | |
946 | ||
947 | /* Return the default value of SYM, but don't check for voidness. | |
1bfcade3 | 948 | Return Qunbound if it is void. */ |
7921925c JB |
949 | |
950 | Lisp_Object | |
951 | default_value (sym) | |
952 | Lisp_Object sym; | |
953 | { | |
954 | register Lisp_Object valcontents; | |
955 | ||
956 | CHECK_SYMBOL (sym, 0); | |
957 | valcontents = XSYMBOL (sym)->value; | |
958 | ||
959 | /* For a built-in buffer-local variable, get the default value | |
960 | rather than letting do_symval_forwarding get the current value. */ | |
e9ebc175 | 961 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 962 | { |
46b2ac21 | 963 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
7921925c | 964 | |
865c050f | 965 | if (XINT (*(Lisp_Object *) (idx + (char *) &buffer_local_flags)) != 0) |
7921925c JB |
966 | return *(Lisp_Object *)(idx + (char *) &buffer_defaults); |
967 | } | |
968 | ||
969 | /* Handle user-created local variables. */ | |
e9ebc175 KH |
970 | if (BUFFER_LOCAL_VALUEP (valcontents) |
971 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c JB |
972 | { |
973 | /* If var is set up for a buffer that lacks a local value for it, | |
974 | the current value is nominally the default value. | |
975 | But the current value slot may be more up to date, since | |
976 | ordinary setq stores just that slot. So use that. */ | |
977 | Lisp_Object current_alist_element, alist_element_car; | |
978 | current_alist_element | |
8d4afcac | 979 | = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
7921925c JB |
980 | alist_element_car = XCONS (current_alist_element)->car; |
981 | if (EQ (alist_element_car, current_alist_element)) | |
8d4afcac | 982 | return do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car); |
7921925c | 983 | else |
8d4afcac | 984 | return XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->cdr; |
7921925c JB |
985 | } |
986 | /* For other variables, get the current value. */ | |
987 | return do_symval_forwarding (valcontents); | |
988 | } | |
989 | ||
990 | DEFUN ("default-boundp", Fdefault_boundp, Sdefault_boundp, 1, 1, 0, | |
991 | "Return T if SYMBOL has a non-void default value.\n\ | |
992 | This is the value that is seen in buffers that do not have their own values\n\ | |
993 | for this variable.") | |
994 | (sym) | |
995 | Lisp_Object sym; | |
996 | { | |
997 | register Lisp_Object value; | |
998 | ||
999 | value = default_value (sym); | |
1bfcade3 | 1000 | return (EQ (value, Qunbound) ? Qnil : Qt); |
7921925c JB |
1001 | } |
1002 | ||
1003 | DEFUN ("default-value", Fdefault_value, Sdefault_value, 1, 1, 0, | |
1004 | "Return SYMBOL's default value.\n\ | |
1005 | This is the value that is seen in buffers that do not have their own values\n\ | |
1006 | for this variable. The default value is meaningful for variables with\n\ | |
1007 | local bindings in certain buffers.") | |
1008 | (sym) | |
1009 | Lisp_Object sym; | |
1010 | { | |
1011 | register Lisp_Object value; | |
1012 | ||
1013 | value = default_value (sym); | |
1bfcade3 | 1014 | if (EQ (value, Qunbound)) |
7921925c JB |
1015 | return Fsignal (Qvoid_variable, Fcons (sym, Qnil)); |
1016 | return value; | |
1017 | } | |
1018 | ||
1019 | DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0, | |
1020 | "Set SYMBOL's default value to VAL. SYMBOL and VAL are evaluated.\n\ | |
1021 | The default value is seen in buffers that do not have their own values\n\ | |
1022 | for this variable.") | |
1023 | (sym, value) | |
1024 | Lisp_Object sym, value; | |
1025 | { | |
1026 | register Lisp_Object valcontents, current_alist_element, alist_element_buffer; | |
1027 | ||
1028 | CHECK_SYMBOL (sym, 0); | |
1029 | valcontents = XSYMBOL (sym)->value; | |
1030 | ||
1031 | /* Handle variables like case-fold-search that have special slots | |
1032 | in the buffer. Make them work apparently like Lisp_Buffer_Local_Value | |
1033 | variables. */ | |
e9ebc175 | 1034 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1035 | { |
46b2ac21 | 1036 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
7921925c | 1037 | register struct buffer *b; |
865c050f KH |
1038 | register int mask = XINT (*((Lisp_Object *) |
1039 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
1040 | |
1041 | if (mask > 0) | |
1042 | { | |
1043 | *(Lisp_Object *)(idx + (char *) &buffer_defaults) = value; | |
1044 | for (b = all_buffers; b; b = b->next) | |
1045 | if (!(b->local_var_flags & mask)) | |
1046 | *(Lisp_Object *)(idx + (char *) b) = value; | |
1047 | } | |
1048 | return value; | |
1049 | } | |
1050 | ||
e9ebc175 KH |
1051 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
1052 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c JB |
1053 | return Fset (sym, value); |
1054 | ||
1055 | /* Store new value into the DEFAULT-VALUE slot */ | |
8d4afcac | 1056 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->cdr = value; |
7921925c JB |
1057 | |
1058 | /* If that slot is current, we must set the REALVALUE slot too */ | |
8d4afcac KH |
1059 | current_alist_element |
1060 | = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; | |
7921925c JB |
1061 | alist_element_buffer = Fcar (current_alist_element); |
1062 | if (EQ (alist_element_buffer, current_alist_element)) | |
8d4afcac KH |
1063 | store_symval_forwarding (sym, XBUFFER_LOCAL_VALUE (valcontents)->car, |
1064 | value); | |
7921925c JB |
1065 | |
1066 | return value; | |
1067 | } | |
1068 | ||
1069 | DEFUN ("setq-default", Fsetq_default, Ssetq_default, 2, UNEVALLED, 0, | |
0412bf67 RS |
1070 | "Set the default value of variable VAR to VALUE.\n\ |
1071 | VAR, the variable name, is literal (not evaluated);\n\ | |
1072 | VALUE is an expression and it is evaluated.\n\ | |
1073 | The default value of a variable is seen in buffers\n\ | |
1074 | that do not have their own values for the variable.\n\ | |
1075 | \n\ | |
1076 | More generally, you can use multiple variables and values, as in\n\ | |
1077 | (setq-default SYM VALUE SYM VALUE...)\n\ | |
1078 | This sets each SYM's default value to the corresponding VALUE.\n\ | |
1079 | The VALUE for the Nth SYM can refer to the new default values\n\ | |
1080 | of previous SYMs.") | |
7921925c JB |
1081 | (args) |
1082 | Lisp_Object args; | |
1083 | { | |
1084 | register Lisp_Object args_left; | |
1085 | register Lisp_Object val, sym; | |
1086 | struct gcpro gcpro1; | |
1087 | ||
a33ef3ab | 1088 | if (NILP (args)) |
7921925c JB |
1089 | return Qnil; |
1090 | ||
1091 | args_left = args; | |
1092 | GCPRO1 (args); | |
1093 | ||
1094 | do | |
1095 | { | |
1096 | val = Feval (Fcar (Fcdr (args_left))); | |
1097 | sym = Fcar (args_left); | |
1098 | Fset_default (sym, val); | |
1099 | args_left = Fcdr (Fcdr (args_left)); | |
1100 | } | |
a33ef3ab | 1101 | while (!NILP (args_left)); |
7921925c JB |
1102 | |
1103 | UNGCPRO; | |
1104 | return val; | |
1105 | } | |
1106 | \f | |
a5ca2b75 JB |
1107 | /* Lisp functions for creating and removing buffer-local variables. */ |
1108 | ||
7921925c JB |
1109 | DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local, Smake_variable_buffer_local, |
1110 | 1, 1, "vMake Variable Buffer Local: ", | |
1111 | "Make VARIABLE have a separate value for each buffer.\n\ | |
1112 | At any time, the value for the current buffer is in effect.\n\ | |
1113 | There is also a default value which is seen in any buffer which has not yet\n\ | |
1114 | set its own value.\n\ | |
1115 | Using `set' or `setq' to set the variable causes it to have a separate value\n\ | |
1116 | for the current buffer if it was previously using the default value.\n\ | |
1117 | The function `default-value' gets the default value and `set-default' sets it.") | |
1118 | (sym) | |
1119 | register Lisp_Object sym; | |
1120 | { | |
8d4afcac | 1121 | register Lisp_Object tem, valcontents, newval; |
7921925c JB |
1122 | |
1123 | CHECK_SYMBOL (sym, 0); | |
1124 | ||
7403b5c8 KH |
1125 | valcontents = XSYMBOL (sym)->value; |
1126 | if (EQ (sym, Qnil) || EQ (sym, Qt) || DISPLAY_OBJFWDP (valcontents)) | |
7921925c JB |
1127 | error ("Symbol %s may not be buffer-local", XSYMBOL (sym)->name->data); |
1128 | ||
e9ebc175 | 1129 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
7921925c | 1130 | return sym; |
e9ebc175 | 1131 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
7921925c | 1132 | { |
8d4afcac | 1133 | XMISC (XSYMBOL (sym)->value)->type = Lisp_Misc_Buffer_Local_Value; |
7921925c JB |
1134 | return sym; |
1135 | } | |
1136 | if (EQ (valcontents, Qunbound)) | |
1137 | XSYMBOL (sym)->value = Qnil; | |
1138 | tem = Fcons (Qnil, Fsymbol_value (sym)); | |
1139 | XCONS (tem)->car = tem; | |
8d4afcac KH |
1140 | newval = allocate_misc (); |
1141 | XMISC (newval)->type = Lisp_Misc_Buffer_Local_Value; | |
1142 | XBUFFER_LOCAL_VALUE (newval)->car = XSYMBOL (sym)->value; | |
1143 | XBUFFER_LOCAL_VALUE (newval)->cdr = Fcons (Fcurrent_buffer (), tem); | |
1144 | XSYMBOL (sym)->value = newval; | |
7921925c JB |
1145 | return sym; |
1146 | } | |
1147 | ||
1148 | DEFUN ("make-local-variable", Fmake_local_variable, Smake_local_variable, | |
1149 | 1, 1, "vMake Local Variable: ", | |
1150 | "Make VARIABLE have a separate value in the current buffer.\n\ | |
1151 | Other buffers will continue to share a common default value.\n\ | |
a782f0d5 RS |
1152 | \(The buffer-local value of VARIABLE starts out as the same value\n\ |
1153 | VARIABLE previously had. If VARIABLE was void, it remains void.\)\n\ | |
7921925c JB |
1154 | See also `make-variable-buffer-local'.\n\n\ |
1155 | If the variable is already arranged to become local when set,\n\ | |
1156 | this function causes a local value to exist for this buffer,\n\ | |
62476adc RS |
1157 | just as setting the variable would do.\n\ |
1158 | \n\ | |
1159 | Do not use `make-local-variable' to make a hook variable buffer-local.\n\ | |
1160 | Use `make-local-hook' instead.") | |
7921925c JB |
1161 | (sym) |
1162 | register Lisp_Object sym; | |
1163 | { | |
1164 | register Lisp_Object tem, valcontents; | |
1165 | ||
1166 | CHECK_SYMBOL (sym, 0); | |
1167 | ||
7403b5c8 KH |
1168 | valcontents = XSYMBOL (sym)->value; |
1169 | if (EQ (sym, Qnil) || EQ (sym, Qt) || DISPLAY_OBJFWDP (valcontents)) | |
7921925c JB |
1170 | error ("Symbol %s may not be buffer-local", XSYMBOL (sym)->name->data); |
1171 | ||
e9ebc175 | 1172 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
7921925c JB |
1173 | { |
1174 | tem = Fboundp (sym); | |
7403b5c8 | 1175 | |
7921925c JB |
1176 | /* Make sure the symbol has a local value in this particular buffer, |
1177 | by setting it to the same value it already has. */ | |
1178 | Fset (sym, (EQ (tem, Qt) ? Fsymbol_value (sym) : Qunbound)); | |
1179 | return sym; | |
1180 | } | |
1181 | /* Make sure sym is set up to hold per-buffer values */ | |
e9ebc175 | 1182 | if (!SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
7921925c | 1183 | { |
8d4afcac | 1184 | Lisp_Object newval; |
7921925c JB |
1185 | tem = Fcons (Qnil, do_symval_forwarding (valcontents)); |
1186 | XCONS (tem)->car = tem; | |
8d4afcac KH |
1187 | newval = allocate_misc (); |
1188 | XMISC (newval)->type = Lisp_Misc_Some_Buffer_Local_Value; | |
1189 | XBUFFER_LOCAL_VALUE (newval)->car = XSYMBOL (sym)->value; | |
1190 | XBUFFER_LOCAL_VALUE (newval)->cdr = Fcons (Qnil, tem); | |
1191 | XSYMBOL (sym)->value = newval; | |
7921925c JB |
1192 | } |
1193 | /* Make sure this buffer has its own value of sym */ | |
1194 | tem = Fassq (sym, current_buffer->local_var_alist); | |
a33ef3ab | 1195 | if (NILP (tem)) |
7921925c JB |
1196 | { |
1197 | current_buffer->local_var_alist | |
8d4afcac | 1198 | = Fcons (Fcons (sym, XCONS (XCONS (XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->cdr)->cdr)->cdr), |
7921925c JB |
1199 | current_buffer->local_var_alist); |
1200 | ||
1201 | /* Make sure symbol does not think it is set up for this buffer; | |
1202 | force it to look once again for this buffer's value */ | |
1203 | { | |
8d4afcac KH |
1204 | Lisp_Object *pvalbuf; |
1205 | valcontents = XSYMBOL (sym)->value; | |
1206 | pvalbuf = &XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; | |
1207 | if (current_buffer == XBUFFER (*pvalbuf)) | |
1208 | *pvalbuf = Qnil; | |
7921925c | 1209 | } |
7921925c | 1210 | } |
a5ca2b75 JB |
1211 | |
1212 | /* If the symbol forwards into a C variable, then swap in the | |
1213 | variable for this buffer immediately. If C code modifies the | |
1214 | variable before we swap in, then that new value will clobber the | |
1215 | default value the next time we swap. */ | |
8d4afcac | 1216 | valcontents = XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->car; |
e9ebc175 | 1217 | if (INTFWDP (valcontents) || BOOLFWDP (valcontents) || OBJFWDP (valcontents)) |
a5ca2b75 JB |
1218 | swap_in_symval_forwarding (sym, XSYMBOL (sym)->value); |
1219 | ||
7921925c JB |
1220 | return sym; |
1221 | } | |
1222 | ||
1223 | DEFUN ("kill-local-variable", Fkill_local_variable, Skill_local_variable, | |
1224 | 1, 1, "vKill Local Variable: ", | |
1225 | "Make VARIABLE no longer have a separate value in the current buffer.\n\ | |
1226 | From now on the default value will apply in this buffer.") | |
1227 | (sym) | |
1228 | register Lisp_Object sym; | |
1229 | { | |
1230 | register Lisp_Object tem, valcontents; | |
1231 | ||
1232 | CHECK_SYMBOL (sym, 0); | |
1233 | ||
1234 | valcontents = XSYMBOL (sym)->value; | |
1235 | ||
e9ebc175 | 1236 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1237 | { |
46b2ac21 | 1238 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
865c050f KH |
1239 | register int mask = XINT (*((Lisp_Object*) |
1240 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
1241 | |
1242 | if (mask > 0) | |
1243 | { | |
1244 | *(Lisp_Object *)(idx + (char *) current_buffer) | |
1245 | = *(Lisp_Object *)(idx + (char *) &buffer_defaults); | |
1246 | current_buffer->local_var_flags &= ~mask; | |
1247 | } | |
1248 | return sym; | |
1249 | } | |
1250 | ||
e9ebc175 KH |
1251 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
1252 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c JB |
1253 | return sym; |
1254 | ||
1255 | /* Get rid of this buffer's alist element, if any */ | |
1256 | ||
1257 | tem = Fassq (sym, current_buffer->local_var_alist); | |
a33ef3ab | 1258 | if (!NILP (tem)) |
8d4afcac KH |
1259 | current_buffer->local_var_alist |
1260 | = Fdelq (tem, current_buffer->local_var_alist); | |
7921925c JB |
1261 | |
1262 | /* Make sure symbol does not think it is set up for this buffer; | |
1263 | force it to look once again for this buffer's value */ | |
1264 | { | |
8d4afcac KH |
1265 | Lisp_Object *pvalbuf; |
1266 | valcontents = XSYMBOL (sym)->value; | |
1267 | pvalbuf = &XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; | |
1268 | if (current_buffer == XBUFFER (*pvalbuf)) | |
1269 | *pvalbuf = Qnil; | |
7921925c JB |
1270 | } |
1271 | ||
1272 | return sym; | |
1273 | } | |
62476adc RS |
1274 | |
1275 | DEFUN ("local-variable-p", Flocal_variable_p, Slocal_variable_p, | |
1276 | 1, 1, 0, | |
1277 | "Non-nil if VARIABLE has a local binding in the current buffer.") | |
1278 | (sym) | |
1279 | register Lisp_Object sym; | |
1280 | { | |
1281 | Lisp_Object valcontents; | |
1282 | ||
1283 | CHECK_SYMBOL (sym, 0); | |
1284 | ||
1285 | valcontents = XSYMBOL (sym)->value; | |
1286 | return ((BUFFER_LOCAL_VALUEP (valcontents) | |
1287 | || SOME_BUFFER_LOCAL_VALUEP (valcontents) | |
1288 | || BUFFER_OBJFWDP (valcontents)) | |
1289 | ? Qt : Qnil); | |
1290 | } | |
7921925c | 1291 | \f |
ffd56f97 JB |
1292 | /* Find the function at the end of a chain of symbol function indirections. */ |
1293 | ||
1294 | /* If OBJECT is a symbol, find the end of its function chain and | |
1295 | return the value found there. If OBJECT is not a symbol, just | |
1296 | return it. If there is a cycle in the function chain, signal a | |
1297 | cyclic-function-indirection error. | |
1298 | ||
1299 | This is like Findirect_function, except that it doesn't signal an | |
1300 | error if the chain ends up unbound. */ | |
1301 | Lisp_Object | |
a2932990 | 1302 | indirect_function (object) |
62476adc | 1303 | register Lisp_Object object; |
ffd56f97 | 1304 | { |
eb8c3be9 | 1305 | Lisp_Object tortoise, hare; |
ffd56f97 | 1306 | |
eb8c3be9 | 1307 | hare = tortoise = object; |
ffd56f97 JB |
1308 | |
1309 | for (;;) | |
1310 | { | |
e9ebc175 | 1311 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
ffd56f97 JB |
1312 | break; |
1313 | hare = XSYMBOL (hare)->function; | |
e9ebc175 | 1314 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
ffd56f97 JB |
1315 | break; |
1316 | hare = XSYMBOL (hare)->function; | |
1317 | ||
eb8c3be9 | 1318 | tortoise = XSYMBOL (tortoise)->function; |
ffd56f97 | 1319 | |
eb8c3be9 | 1320 | if (EQ (hare, tortoise)) |
ffd56f97 JB |
1321 | Fsignal (Qcyclic_function_indirection, Fcons (object, Qnil)); |
1322 | } | |
1323 | ||
1324 | return hare; | |
1325 | } | |
1326 | ||
1327 | DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0, | |
1328 | "Return the function at the end of OBJECT's function chain.\n\ | |
1329 | If OBJECT is a symbol, follow all function indirections and return the final\n\ | |
1330 | function binding.\n\ | |
1331 | If OBJECT is not a symbol, just return it.\n\ | |
1332 | Signal a void-function error if the final symbol is unbound.\n\ | |
1333 | Signal a cyclic-function-indirection error if there is a loop in the\n\ | |
1334 | function chain of symbols.") | |
1335 | (object) | |
1336 | register Lisp_Object object; | |
1337 | { | |
1338 | Lisp_Object result; | |
1339 | ||
1340 | result = indirect_function (object); | |
1341 | ||
1342 | if (EQ (result, Qunbound)) | |
1343 | return Fsignal (Qvoid_function, Fcons (object, Qnil)); | |
1344 | return result; | |
1345 | } | |
1346 | \f | |
7921925c JB |
1347 | /* Extract and set vector and string elements */ |
1348 | ||
1349 | DEFUN ("aref", Faref, Saref, 2, 2, 0, | |
1350 | "Return the element of ARRAY at index INDEX.\n\ | |
1351 | ARRAY may be a vector or a string, or a byte-code object. INDEX starts at 0.") | |
1352 | (array, idx) | |
1353 | register Lisp_Object array; | |
1354 | Lisp_Object idx; | |
1355 | { | |
1356 | register int idxval; | |
1357 | ||
1358 | CHECK_NUMBER (idx, 1); | |
1359 | idxval = XINT (idx); | |
e9ebc175 | 1360 | if (STRINGP (array)) |
7921925c JB |
1361 | { |
1362 | Lisp_Object val; | |
c24e4efe KH |
1363 | if (idxval < 0 || idxval >= XSTRING (array)->size) |
1364 | args_out_of_range (array, idx); | |
1b42cf2e | 1365 | XSETFASTINT (val, (unsigned char) XSTRING (array)->data[idxval]); |
7921925c JB |
1366 | return val; |
1367 | } | |
1368 | else | |
c24e4efe | 1369 | { |
7f358972 RS |
1370 | int size; |
1371 | if (VECTORP (array)) | |
1372 | size = XVECTOR (array)->size; | |
1373 | else if (COMPILEDP (array)) | |
1374 | size = XVECTOR (array)->size & PSEUDOVECTOR_SIZE_MASK; | |
1375 | else | |
1376 | wrong_type_argument (Qarrayp, array); | |
1377 | ||
1378 | if (idxval < 0 || idxval >= size) | |
c24e4efe KH |
1379 | args_out_of_range (array, idx); |
1380 | return XVECTOR (array)->contents[idxval]; | |
1381 | } | |
7921925c JB |
1382 | } |
1383 | ||
1384 | DEFUN ("aset", Faset, Saset, 3, 3, 0, | |
73d40355 RS |
1385 | "Store into the element of ARRAY at index IDX the value NEWELT.\n\ |
1386 | ARRAY may be a vector or a string. IDX starts at 0.") | |
7921925c JB |
1387 | (array, idx, newelt) |
1388 | register Lisp_Object array; | |
1389 | Lisp_Object idx, newelt; | |
1390 | { | |
1391 | register int idxval; | |
1392 | ||
1393 | CHECK_NUMBER (idx, 1); | |
1394 | idxval = XINT (idx); | |
e9ebc175 | 1395 | if (!VECTORP (array) && !STRINGP (array)) |
7921925c | 1396 | array = wrong_type_argument (Qarrayp, array); |
7921925c JB |
1397 | CHECK_IMPURE (array); |
1398 | ||
e9ebc175 | 1399 | if (VECTORP (array)) |
c24e4efe KH |
1400 | { |
1401 | if (idxval < 0 || idxval >= XVECTOR (array)->size) | |
1402 | args_out_of_range (array, idx); | |
1403 | XVECTOR (array)->contents[idxval] = newelt; | |
1404 | } | |
7921925c JB |
1405 | else |
1406 | { | |
c24e4efe KH |
1407 | if (idxval < 0 || idxval >= XSTRING (array)->size) |
1408 | args_out_of_range (array, idx); | |
7921925c JB |
1409 | CHECK_NUMBER (newelt, 2); |
1410 | XSTRING (array)->data[idxval] = XINT (newelt); | |
1411 | } | |
1412 | ||
1413 | return newelt; | |
1414 | } | |
7921925c JB |
1415 | \f |
1416 | /* Arithmetic functions */ | |
1417 | ||
1418 | enum comparison { equal, notequal, less, grtr, less_or_equal, grtr_or_equal }; | |
1419 | ||
1420 | Lisp_Object | |
1421 | arithcompare (num1, num2, comparison) | |
1422 | Lisp_Object num1, num2; | |
1423 | enum comparison comparison; | |
1424 | { | |
1425 | double f1, f2; | |
1426 | int floatp = 0; | |
1427 | ||
1428 | #ifdef LISP_FLOAT_TYPE | |
1429 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1, 0); | |
1430 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2, 0); | |
1431 | ||
e9ebc175 | 1432 | if (FLOATP (num1) || FLOATP (num2)) |
7921925c JB |
1433 | { |
1434 | floatp = 1; | |
e9ebc175 KH |
1435 | f1 = (FLOATP (num1)) ? XFLOAT (num1)->data : XINT (num1); |
1436 | f2 = (FLOATP (num2)) ? XFLOAT (num2)->data : XINT (num2); | |
7921925c JB |
1437 | } |
1438 | #else | |
1439 | CHECK_NUMBER_COERCE_MARKER (num1, 0); | |
1440 | CHECK_NUMBER_COERCE_MARKER (num2, 0); | |
1441 | #endif /* LISP_FLOAT_TYPE */ | |
1442 | ||
1443 | switch (comparison) | |
1444 | { | |
1445 | case equal: | |
1446 | if (floatp ? f1 == f2 : XINT (num1) == XINT (num2)) | |
1447 | return Qt; | |
1448 | return Qnil; | |
1449 | ||
1450 | case notequal: | |
1451 | if (floatp ? f1 != f2 : XINT (num1) != XINT (num2)) | |
1452 | return Qt; | |
1453 | return Qnil; | |
1454 | ||
1455 | case less: | |
1456 | if (floatp ? f1 < f2 : XINT (num1) < XINT (num2)) | |
1457 | return Qt; | |
1458 | return Qnil; | |
1459 | ||
1460 | case less_or_equal: | |
1461 | if (floatp ? f1 <= f2 : XINT (num1) <= XINT (num2)) | |
1462 | return Qt; | |
1463 | return Qnil; | |
1464 | ||
1465 | case grtr: | |
1466 | if (floatp ? f1 > f2 : XINT (num1) > XINT (num2)) | |
1467 | return Qt; | |
1468 | return Qnil; | |
1469 | ||
1470 | case grtr_or_equal: | |
1471 | if (floatp ? f1 >= f2 : XINT (num1) >= XINT (num2)) | |
1472 | return Qt; | |
1473 | return Qnil; | |
25e40a4b JB |
1474 | |
1475 | default: | |
1476 | abort (); | |
7921925c JB |
1477 | } |
1478 | } | |
1479 | ||
1480 | DEFUN ("=", Feqlsign, Seqlsign, 2, 2, 0, | |
1481 | "T if two args, both numbers or markers, are equal.") | |
1482 | (num1, num2) | |
1483 | register Lisp_Object num1, num2; | |
1484 | { | |
1485 | return arithcompare (num1, num2, equal); | |
1486 | } | |
1487 | ||
1488 | DEFUN ("<", Flss, Slss, 2, 2, 0, | |
1489 | "T if first arg is less than second arg. Both must be numbers or markers.") | |
1490 | (num1, num2) | |
1491 | register Lisp_Object num1, num2; | |
1492 | { | |
1493 | return arithcompare (num1, num2, less); | |
1494 | } | |
1495 | ||
1496 | DEFUN (">", Fgtr, Sgtr, 2, 2, 0, | |
1497 | "T if first arg is greater than second arg. Both must be numbers or markers.") | |
1498 | (num1, num2) | |
1499 | register Lisp_Object num1, num2; | |
1500 | { | |
1501 | return arithcompare (num1, num2, grtr); | |
1502 | } | |
1503 | ||
1504 | DEFUN ("<=", Fleq, Sleq, 2, 2, 0, | |
1505 | "T if first arg is less than or equal to second arg.\n\ | |
1506 | Both must be numbers or markers.") | |
1507 | (num1, num2) | |
1508 | register Lisp_Object num1, num2; | |
1509 | { | |
1510 | return arithcompare (num1, num2, less_or_equal); | |
1511 | } | |
1512 | ||
1513 | DEFUN (">=", Fgeq, Sgeq, 2, 2, 0, | |
1514 | "T if first arg is greater than or equal to second arg.\n\ | |
1515 | Both must be numbers or markers.") | |
1516 | (num1, num2) | |
1517 | register Lisp_Object num1, num2; | |
1518 | { | |
1519 | return arithcompare (num1, num2, grtr_or_equal); | |
1520 | } | |
1521 | ||
1522 | DEFUN ("/=", Fneq, Sneq, 2, 2, 0, | |
1523 | "T if first arg is not equal to second arg. Both must be numbers or markers.") | |
1524 | (num1, num2) | |
1525 | register Lisp_Object num1, num2; | |
1526 | { | |
1527 | return arithcompare (num1, num2, notequal); | |
1528 | } | |
1529 | ||
1530 | DEFUN ("zerop", Fzerop, Szerop, 1, 1, 0, "T if NUMBER is zero.") | |
1531 | (num) | |
1532 | register Lisp_Object num; | |
1533 | { | |
1534 | #ifdef LISP_FLOAT_TYPE | |
1535 | CHECK_NUMBER_OR_FLOAT (num, 0); | |
1536 | ||
e9ebc175 | 1537 | if (FLOATP (num)) |
7921925c JB |
1538 | { |
1539 | if (XFLOAT(num)->data == 0.0) | |
1540 | return Qt; | |
1541 | return Qnil; | |
1542 | } | |
1543 | #else | |
1544 | CHECK_NUMBER (num, 0); | |
1545 | #endif /* LISP_FLOAT_TYPE */ | |
1546 | ||
1547 | if (!XINT (num)) | |
1548 | return Qt; | |
1549 | return Qnil; | |
1550 | } | |
1551 | \f | |
51cf3e31 JB |
1552 | /* Convert between 32-bit values and pairs of lispy 24-bit values. */ |
1553 | ||
1554 | Lisp_Object | |
1555 | long_to_cons (i) | |
1556 | unsigned long i; | |
1557 | { | |
1558 | unsigned int top = i >> 16; | |
1559 | unsigned int bot = i & 0xFFFF; | |
1560 | if (top == 0) | |
1561 | return make_number (bot); | |
1562 | if (top == 0xFFFF) | |
1563 | return Fcons (make_number (-1), make_number (bot)); | |
1564 | return Fcons (make_number (top), make_number (bot)); | |
1565 | } | |
1566 | ||
1567 | unsigned long | |
1568 | cons_to_long (c) | |
1569 | Lisp_Object c; | |
1570 | { | |
878a80cc | 1571 | Lisp_Object top, bot; |
51cf3e31 JB |
1572 | if (INTEGERP (c)) |
1573 | return XINT (c); | |
1574 | top = XCONS (c)->car; | |
1575 | bot = XCONS (c)->cdr; | |
1576 | if (CONSP (bot)) | |
1577 | bot = XCONS (bot)->car; | |
1578 | return ((XINT (top) << 16) | XINT (bot)); | |
1579 | } | |
1580 | \f | |
f2980264 | 1581 | DEFUN ("number-to-string", Fnumber_to_string, Snumber_to_string, 1, 1, 0, |
25e40a4b JB |
1582 | "Convert NUM to a string by printing it in decimal.\n\ |
1583 | Uses a minus sign if negative.\n\ | |
1584 | NUM may be an integer or a floating point number.") | |
7921925c JB |
1585 | (num) |
1586 | Lisp_Object num; | |
1587 | { | |
1588 | char buffer[20]; | |
1589 | ||
1590 | #ifndef LISP_FLOAT_TYPE | |
1591 | CHECK_NUMBER (num, 0); | |
1592 | #else | |
1593 | CHECK_NUMBER_OR_FLOAT (num, 0); | |
1594 | ||
e9ebc175 | 1595 | if (FLOATP (num)) |
7921925c JB |
1596 | { |
1597 | char pigbuf[350]; /* see comments in float_to_string */ | |
1598 | ||
1599 | float_to_string (pigbuf, XFLOAT(num)->data); | |
7403b5c8 | 1600 | return build_string (pigbuf); |
7921925c JB |
1601 | } |
1602 | #endif /* LISP_FLOAT_TYPE */ | |
1603 | ||
1604 | sprintf (buffer, "%d", XINT (num)); | |
1605 | return build_string (buffer); | |
1606 | } | |
1607 | ||
25e40a4b JB |
1608 | DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 1, 0, |
1609 | "Convert STRING to a number by parsing it as a decimal number.\n\ | |
1c1c17eb RS |
1610 | This parses both integers and floating point numbers.\n\ |
1611 | It ignores leading spaces and tabs.") | |
7921925c JB |
1612 | (str) |
1613 | register Lisp_Object str; | |
1614 | { | |
0a3e4d65 | 1615 | unsigned char *p; |
25e40a4b | 1616 | |
7921925c JB |
1617 | CHECK_STRING (str, 0); |
1618 | ||
25e40a4b JB |
1619 | p = XSTRING (str)->data; |
1620 | ||
1621 | /* Skip any whitespace at the front of the number. Some versions of | |
1622 | atoi do this anyway, so we might as well make Emacs lisp consistent. */ | |
0a3e4d65 | 1623 | while (*p == ' ' || *p == '\t') |
25e40a4b JB |
1624 | p++; |
1625 | ||
7921925c | 1626 | #ifdef LISP_FLOAT_TYPE |
25e40a4b JB |
1627 | if (isfloat_string (p)) |
1628 | return make_float (atof (p)); | |
7921925c JB |
1629 | #endif /* LISP_FLOAT_TYPE */ |
1630 | ||
25e40a4b | 1631 | return make_number (atoi (p)); |
7921925c | 1632 | } |
7403b5c8 | 1633 | \f |
7921925c JB |
1634 | enum arithop |
1635 | { Aadd, Asub, Amult, Adiv, Alogand, Alogior, Alogxor, Amax, Amin }; | |
1636 | ||
b06faa91 JB |
1637 | extern Lisp_Object float_arith_driver (); |
1638 | ||
7921925c | 1639 | Lisp_Object |
87fbf902 | 1640 | arith_driver (code, nargs, args) |
7921925c JB |
1641 | enum arithop code; |
1642 | int nargs; | |
1643 | register Lisp_Object *args; | |
1644 | { | |
1645 | register Lisp_Object val; | |
1646 | register int argnum; | |
1647 | register int accum; | |
1648 | register int next; | |
1649 | ||
0220c518 | 1650 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
1651 | { |
1652 | case Alogior: | |
1653 | case Alogxor: | |
1654 | case Aadd: | |
1655 | case Asub: | |
1656 | accum = 0; break; | |
1657 | case Amult: | |
1658 | accum = 1; break; | |
1659 | case Alogand: | |
1660 | accum = -1; break; | |
1661 | } | |
1662 | ||
1663 | for (argnum = 0; argnum < nargs; argnum++) | |
1664 | { | |
1665 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
1666 | #ifdef LISP_FLOAT_TYPE | |
1667 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
1668 | ||
e9ebc175 | 1669 | if (FLOATP (val)) /* time to do serious math */ |
7921925c JB |
1670 | return (float_arith_driver ((double) accum, argnum, code, |
1671 | nargs, args)); | |
1672 | #else | |
1673 | CHECK_NUMBER_COERCE_MARKER (val, argnum); | |
1674 | #endif /* LISP_FLOAT_TYPE */ | |
1675 | args[argnum] = val; /* runs into a compiler bug. */ | |
1676 | next = XINT (args[argnum]); | |
0220c518 | 1677 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
1678 | { |
1679 | case Aadd: accum += next; break; | |
1680 | case Asub: | |
1681 | if (!argnum && nargs != 1) | |
1682 | next = - next; | |
1683 | accum -= next; | |
1684 | break; | |
1685 | case Amult: accum *= next; break; | |
1686 | case Adiv: | |
1687 | if (!argnum) accum = next; | |
87fbf902 RS |
1688 | else |
1689 | { | |
1690 | if (next == 0) | |
1691 | Fsignal (Qarith_error, Qnil); | |
1692 | accum /= next; | |
1693 | } | |
7921925c JB |
1694 | break; |
1695 | case Alogand: accum &= next; break; | |
1696 | case Alogior: accum |= next; break; | |
1697 | case Alogxor: accum ^= next; break; | |
1698 | case Amax: if (!argnum || next > accum) accum = next; break; | |
1699 | case Amin: if (!argnum || next < accum) accum = next; break; | |
1700 | } | |
1701 | } | |
1702 | ||
f187f1f7 | 1703 | XSETINT (val, accum); |
7921925c JB |
1704 | return val; |
1705 | } | |
1706 | ||
1707 | #ifdef LISP_FLOAT_TYPE | |
1a2f2d33 KH |
1708 | |
1709 | #undef isnan | |
1710 | #define isnan(x) ((x) != (x)) | |
1711 | ||
7921925c JB |
1712 | Lisp_Object |
1713 | float_arith_driver (accum, argnum, code, nargs, args) | |
1714 | double accum; | |
1715 | register int argnum; | |
1716 | enum arithop code; | |
1717 | int nargs; | |
1718 | register Lisp_Object *args; | |
1719 | { | |
1720 | register Lisp_Object val; | |
1721 | double next; | |
7403b5c8 | 1722 | |
7921925c JB |
1723 | for (; argnum < nargs; argnum++) |
1724 | { | |
1725 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
1726 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
1727 | ||
e9ebc175 | 1728 | if (FLOATP (val)) |
7921925c JB |
1729 | { |
1730 | next = XFLOAT (val)->data; | |
1731 | } | |
1732 | else | |
1733 | { | |
1734 | args[argnum] = val; /* runs into a compiler bug. */ | |
1735 | next = XINT (args[argnum]); | |
1736 | } | |
0220c518 | 1737 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
1738 | { |
1739 | case Aadd: | |
1740 | accum += next; | |
1741 | break; | |
1742 | case Asub: | |
1743 | if (!argnum && nargs != 1) | |
1744 | next = - next; | |
1745 | accum -= next; | |
1746 | break; | |
1747 | case Amult: | |
1748 | accum *= next; | |
1749 | break; | |
1750 | case Adiv: | |
1751 | if (!argnum) | |
1752 | accum = next; | |
1753 | else | |
87fbf902 RS |
1754 | { |
1755 | if (next == 0) | |
1756 | Fsignal (Qarith_error, Qnil); | |
1757 | accum /= next; | |
1758 | } | |
7921925c JB |
1759 | break; |
1760 | case Alogand: | |
1761 | case Alogior: | |
1762 | case Alogxor: | |
1763 | return wrong_type_argument (Qinteger_or_marker_p, val); | |
1764 | case Amax: | |
1a2f2d33 | 1765 | if (!argnum || isnan (next) || next > accum) |
7921925c JB |
1766 | accum = next; |
1767 | break; | |
1768 | case Amin: | |
1a2f2d33 | 1769 | if (!argnum || isnan (next) || next < accum) |
7921925c JB |
1770 | accum = next; |
1771 | break; | |
1772 | } | |
1773 | } | |
1774 | ||
1775 | return make_float (accum); | |
1776 | } | |
1777 | #endif /* LISP_FLOAT_TYPE */ | |
1778 | ||
1779 | DEFUN ("+", Fplus, Splus, 0, MANY, 0, | |
1780 | "Return sum of any number of arguments, which are numbers or markers.") | |
1781 | (nargs, args) | |
1782 | int nargs; | |
1783 | Lisp_Object *args; | |
1784 | { | |
1785 | return arith_driver (Aadd, nargs, args); | |
1786 | } | |
1787 | ||
1788 | DEFUN ("-", Fminus, Sminus, 0, MANY, 0, | |
1789 | "Negate number or subtract numbers or markers.\n\ | |
1790 | With one arg, negates it. With more than one arg,\n\ | |
1791 | subtracts all but the first from the first.") | |
1792 | (nargs, args) | |
1793 | int nargs; | |
1794 | Lisp_Object *args; | |
1795 | { | |
1796 | return arith_driver (Asub, nargs, args); | |
1797 | } | |
1798 | ||
1799 | DEFUN ("*", Ftimes, Stimes, 0, MANY, 0, | |
1800 | "Returns product of any number of arguments, which are numbers or markers.") | |
1801 | (nargs, args) | |
1802 | int nargs; | |
1803 | Lisp_Object *args; | |
1804 | { | |
1805 | return arith_driver (Amult, nargs, args); | |
1806 | } | |
1807 | ||
1808 | DEFUN ("/", Fquo, Squo, 2, MANY, 0, | |
1809 | "Returns first argument divided by all the remaining arguments.\n\ | |
1810 | The arguments must be numbers or markers.") | |
1811 | (nargs, args) | |
1812 | int nargs; | |
1813 | Lisp_Object *args; | |
1814 | { | |
1815 | return arith_driver (Adiv, nargs, args); | |
1816 | } | |
1817 | ||
1818 | DEFUN ("%", Frem, Srem, 2, 2, 0, | |
1819 | "Returns remainder of first arg divided by second.\n\ | |
aa29f9b9 | 1820 | Both must be integers or markers.") |
7921925c JB |
1821 | (num1, num2) |
1822 | register Lisp_Object num1, num2; | |
1823 | { | |
1824 | Lisp_Object val; | |
1825 | ||
7921925c JB |
1826 | CHECK_NUMBER_COERCE_MARKER (num1, 0); |
1827 | CHECK_NUMBER_COERCE_MARKER (num2, 1); | |
7921925c | 1828 | |
87fbf902 RS |
1829 | if (XFASTINT (num2) == 0) |
1830 | Fsignal (Qarith_error, Qnil); | |
1831 | ||
f187f1f7 | 1832 | XSETINT (val, XINT (num1) % XINT (num2)); |
7921925c JB |
1833 | return val; |
1834 | } | |
1835 | ||
1d66a5fa KH |
1836 | #ifndef HAVE_FMOD |
1837 | double | |
1838 | fmod (f1, f2) | |
1839 | double f1, f2; | |
1840 | { | |
1841 | #ifdef HAVE_DREM /* Some systems use this non-standard name. */ | |
1842 | return (drem (f1, f2)); | |
1843 | #else /* Other systems don't seem to have it at all. */ | |
1844 | return (f1 - f2 * floor (f1/f2)); | |
1845 | #endif | |
1846 | } | |
1847 | #endif /* ! HAVE_FMOD */ | |
1848 | ||
44fa9da5 PE |
1849 | DEFUN ("mod", Fmod, Smod, 2, 2, 0, |
1850 | "Returns X modulo Y.\n\ | |
1851 | The result falls between zero (inclusive) and Y (exclusive).\n\ | |
1852 | Both X and Y must be numbers or markers.") | |
1853 | (num1, num2) | |
1854 | register Lisp_Object num1, num2; | |
1855 | { | |
1856 | Lisp_Object val; | |
1857 | int i1, i2; | |
1858 | ||
1859 | #ifdef LISP_FLOAT_TYPE | |
1860 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1, 0); | |
1861 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2, 1); | |
1862 | ||
e9ebc175 | 1863 | if (FLOATP (num1) || FLOATP (num2)) |
44fa9da5 PE |
1864 | { |
1865 | double f1, f2; | |
1866 | ||
e9ebc175 KH |
1867 | f1 = FLOATP (num1) ? XFLOAT (num1)->data : XINT (num1); |
1868 | f2 = FLOATP (num2) ? XFLOAT (num2)->data : XINT (num2); | |
44fa9da5 PE |
1869 | if (f2 == 0) |
1870 | Fsignal (Qarith_error, Qnil); | |
1871 | ||
44fa9da5 | 1872 | f1 = fmod (f1, f2); |
44fa9da5 PE |
1873 | /* If the "remainder" comes out with the wrong sign, fix it. */ |
1874 | if ((f1 < 0) != (f2 < 0)) | |
1875 | f1 += f2; | |
1876 | return (make_float (f1)); | |
1877 | } | |
1878 | #else /* not LISP_FLOAT_TYPE */ | |
1879 | CHECK_NUMBER_COERCE_MARKER (num1, 0); | |
1880 | CHECK_NUMBER_COERCE_MARKER (num2, 1); | |
1881 | #endif /* not LISP_FLOAT_TYPE */ | |
1882 | ||
1883 | i1 = XINT (num1); | |
1884 | i2 = XINT (num2); | |
1885 | ||
1886 | if (i2 == 0) | |
1887 | Fsignal (Qarith_error, Qnil); | |
7403b5c8 | 1888 | |
44fa9da5 PE |
1889 | i1 %= i2; |
1890 | ||
1891 | /* If the "remainder" comes out with the wrong sign, fix it. */ | |
1892 | if ((i1 < 0) != (i2 < 0)) | |
1893 | i1 += i2; | |
1894 | ||
f187f1f7 | 1895 | XSETINT (val, i1); |
44fa9da5 PE |
1896 | return val; |
1897 | } | |
1898 | ||
7921925c JB |
1899 | DEFUN ("max", Fmax, Smax, 1, MANY, 0, |
1900 | "Return largest of all the arguments (which must be numbers or markers).\n\ | |
1901 | The value is always a number; markers are converted to numbers.") | |
1902 | (nargs, args) | |
1903 | int nargs; | |
1904 | Lisp_Object *args; | |
1905 | { | |
1906 | return arith_driver (Amax, nargs, args); | |
1907 | } | |
1908 | ||
1909 | DEFUN ("min", Fmin, Smin, 1, MANY, 0, | |
1910 | "Return smallest of all the arguments (which must be numbers or markers).\n\ | |
1911 | The value is always a number; markers are converted to numbers.") | |
1912 | (nargs, args) | |
1913 | int nargs; | |
1914 | Lisp_Object *args; | |
1915 | { | |
1916 | return arith_driver (Amin, nargs, args); | |
1917 | } | |
1918 | ||
1919 | DEFUN ("logand", Flogand, Slogand, 0, MANY, 0, | |
1920 | "Return bitwise-and of all the arguments.\n\ | |
1921 | Arguments may be integers, or markers converted to integers.") | |
1922 | (nargs, args) | |
1923 | int nargs; | |
1924 | Lisp_Object *args; | |
1925 | { | |
1926 | return arith_driver (Alogand, nargs, args); | |
1927 | } | |
1928 | ||
1929 | DEFUN ("logior", Flogior, Slogior, 0, MANY, 0, | |
1930 | "Return bitwise-or of all the arguments.\n\ | |
1931 | Arguments may be integers, or markers converted to integers.") | |
1932 | (nargs, args) | |
1933 | int nargs; | |
1934 | Lisp_Object *args; | |
1935 | { | |
1936 | return arith_driver (Alogior, nargs, args); | |
1937 | } | |
1938 | ||
1939 | DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0, | |
1940 | "Return bitwise-exclusive-or of all the arguments.\n\ | |
1941 | Arguments may be integers, or markers converted to integers.") | |
1942 | (nargs, args) | |
1943 | int nargs; | |
1944 | Lisp_Object *args; | |
1945 | { | |
1946 | return arith_driver (Alogxor, nargs, args); | |
1947 | } | |
1948 | ||
1949 | DEFUN ("ash", Fash, Sash, 2, 2, 0, | |
1950 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
1951 | If COUNT is negative, shifting is actually to the right.\n\ | |
1952 | In this case, the sign bit is duplicated.") | |
1953 | (num1, num2) | |
1954 | register Lisp_Object num1, num2; | |
1955 | { | |
1956 | register Lisp_Object val; | |
1957 | ||
1958 | CHECK_NUMBER (num1, 0); | |
1959 | CHECK_NUMBER (num2, 1); | |
1960 | ||
1961 | if (XINT (num2) > 0) | |
f187f1f7 | 1962 | XSETINT (val, XINT (num1) << XFASTINT (num2)); |
7921925c | 1963 | else |
f187f1f7 | 1964 | XSETINT (val, XINT (num1) >> -XINT (num2)); |
7921925c JB |
1965 | return val; |
1966 | } | |
1967 | ||
1968 | DEFUN ("lsh", Flsh, Slsh, 2, 2, 0, | |
1969 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
1970 | If COUNT is negative, shifting is actually to the right.\n\ | |
1971 | In this case, zeros are shifted in on the left.") | |
1972 | (num1, num2) | |
1973 | register Lisp_Object num1, num2; | |
1974 | { | |
1975 | register Lisp_Object val; | |
1976 | ||
1977 | CHECK_NUMBER (num1, 0); | |
1978 | CHECK_NUMBER (num2, 1); | |
1979 | ||
1980 | if (XINT (num2) > 0) | |
702672da | 1981 | XSETINT (val, (EMACS_UINT) XUINT (num1) << XFASTINT (num2)); |
7921925c | 1982 | else |
702672da | 1983 | XSETINT (val, (EMACS_UINT) XUINT (num1) >> -XINT (num2)); |
7921925c JB |
1984 | return val; |
1985 | } | |
1986 | ||
1987 | DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0, | |
1988 | "Return NUMBER plus one. NUMBER may be a number or a marker.\n\ | |
1989 | Markers are converted to integers.") | |
1990 | (num) | |
1991 | register Lisp_Object num; | |
1992 | { | |
1993 | #ifdef LISP_FLOAT_TYPE | |
1994 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num, 0); | |
1995 | ||
e9ebc175 | 1996 | if (FLOATP (num)) |
7921925c JB |
1997 | return (make_float (1.0 + XFLOAT (num)->data)); |
1998 | #else | |
1999 | CHECK_NUMBER_COERCE_MARKER (num, 0); | |
2000 | #endif /* LISP_FLOAT_TYPE */ | |
2001 | ||
702672da | 2002 | XSETINT (num, XINT (num) + 1); |
7921925c JB |
2003 | return num; |
2004 | } | |
2005 | ||
2006 | DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0, | |
2007 | "Return NUMBER minus one. NUMBER may be a number or a marker.\n\ | |
2008 | Markers are converted to integers.") | |
2009 | (num) | |
2010 | register Lisp_Object num; | |
2011 | { | |
2012 | #ifdef LISP_FLOAT_TYPE | |
2013 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num, 0); | |
2014 | ||
e9ebc175 | 2015 | if (FLOATP (num)) |
7921925c JB |
2016 | return (make_float (-1.0 + XFLOAT (num)->data)); |
2017 | #else | |
2018 | CHECK_NUMBER_COERCE_MARKER (num, 0); | |
2019 | #endif /* LISP_FLOAT_TYPE */ | |
2020 | ||
702672da | 2021 | XSETINT (num, XINT (num) - 1); |
7921925c JB |
2022 | return num; |
2023 | } | |
2024 | ||
2025 | DEFUN ("lognot", Flognot, Slognot, 1, 1, 0, | |
2026 | "Return the bitwise complement of ARG. ARG must be an integer.") | |
2027 | (num) | |
2028 | register Lisp_Object num; | |
2029 | { | |
2030 | CHECK_NUMBER (num, 0); | |
702672da | 2031 | XSETINT (num, ~XINT (num)); |
7921925c JB |
2032 | return num; |
2033 | } | |
2034 | \f | |
2035 | void | |
2036 | syms_of_data () | |
2037 | { | |
6315e761 RS |
2038 | Lisp_Object error_tail, arith_tail; |
2039 | ||
7921925c JB |
2040 | Qquote = intern ("quote"); |
2041 | Qlambda = intern ("lambda"); | |
2042 | Qsubr = intern ("subr"); | |
2043 | Qerror_conditions = intern ("error-conditions"); | |
2044 | Qerror_message = intern ("error-message"); | |
2045 | Qtop_level = intern ("top-level"); | |
2046 | ||
2047 | Qerror = intern ("error"); | |
2048 | Qquit = intern ("quit"); | |
2049 | Qwrong_type_argument = intern ("wrong-type-argument"); | |
2050 | Qargs_out_of_range = intern ("args-out-of-range"); | |
2051 | Qvoid_function = intern ("void-function"); | |
ffd56f97 | 2052 | Qcyclic_function_indirection = intern ("cyclic-function-indirection"); |
7921925c JB |
2053 | Qvoid_variable = intern ("void-variable"); |
2054 | Qsetting_constant = intern ("setting-constant"); | |
2055 | Qinvalid_read_syntax = intern ("invalid-read-syntax"); | |
2056 | ||
2057 | Qinvalid_function = intern ("invalid-function"); | |
2058 | Qwrong_number_of_arguments = intern ("wrong-number-of-arguments"); | |
2059 | Qno_catch = intern ("no-catch"); | |
2060 | Qend_of_file = intern ("end-of-file"); | |
2061 | Qarith_error = intern ("arith-error"); | |
2062 | Qbeginning_of_buffer = intern ("beginning-of-buffer"); | |
2063 | Qend_of_buffer = intern ("end-of-buffer"); | |
2064 | Qbuffer_read_only = intern ("buffer-read-only"); | |
3b8819d6 | 2065 | Qmark_inactive = intern ("mark-inactive"); |
7921925c JB |
2066 | |
2067 | Qlistp = intern ("listp"); | |
2068 | Qconsp = intern ("consp"); | |
2069 | Qsymbolp = intern ("symbolp"); | |
2070 | Qintegerp = intern ("integerp"); | |
2071 | Qnatnump = intern ("natnump"); | |
8e86942b | 2072 | Qwholenump = intern ("wholenump"); |
7921925c JB |
2073 | Qstringp = intern ("stringp"); |
2074 | Qarrayp = intern ("arrayp"); | |
2075 | Qsequencep = intern ("sequencep"); | |
2076 | Qbufferp = intern ("bufferp"); | |
2077 | Qvectorp = intern ("vectorp"); | |
2078 | Qchar_or_string_p = intern ("char-or-string-p"); | |
2079 | Qmarkerp = intern ("markerp"); | |
07bd8472 | 2080 | Qbuffer_or_string_p = intern ("buffer-or-string-p"); |
7921925c JB |
2081 | Qinteger_or_marker_p = intern ("integer-or-marker-p"); |
2082 | Qboundp = intern ("boundp"); | |
2083 | Qfboundp = intern ("fboundp"); | |
2084 | ||
2085 | #ifdef LISP_FLOAT_TYPE | |
2086 | Qfloatp = intern ("floatp"); | |
2087 | Qnumberp = intern ("numberp"); | |
2088 | Qnumber_or_marker_p = intern ("number-or-marker-p"); | |
2089 | #endif /* LISP_FLOAT_TYPE */ | |
2090 | ||
2091 | Qcdr = intern ("cdr"); | |
2092 | ||
f845f2c9 | 2093 | /* Handle automatic advice activation */ |
ab297811 RS |
2094 | Qad_advice_info = intern ("ad-advice-info"); |
2095 | Qad_activate = intern ("ad-activate"); | |
f845f2c9 | 2096 | |
6315e761 RS |
2097 | error_tail = Fcons (Qerror, Qnil); |
2098 | ||
7921925c JB |
2099 | /* ERROR is used as a signaler for random errors for which nothing else is right */ |
2100 | ||
2101 | Fput (Qerror, Qerror_conditions, | |
6315e761 | 2102 | error_tail); |
7921925c JB |
2103 | Fput (Qerror, Qerror_message, |
2104 | build_string ("error")); | |
2105 | ||
2106 | Fput (Qquit, Qerror_conditions, | |
2107 | Fcons (Qquit, Qnil)); | |
2108 | Fput (Qquit, Qerror_message, | |
2109 | build_string ("Quit")); | |
2110 | ||
2111 | Fput (Qwrong_type_argument, Qerror_conditions, | |
6315e761 | 2112 | Fcons (Qwrong_type_argument, error_tail)); |
7921925c JB |
2113 | Fput (Qwrong_type_argument, Qerror_message, |
2114 | build_string ("Wrong type argument")); | |
2115 | ||
2116 | Fput (Qargs_out_of_range, Qerror_conditions, | |
6315e761 | 2117 | Fcons (Qargs_out_of_range, error_tail)); |
7921925c JB |
2118 | Fput (Qargs_out_of_range, Qerror_message, |
2119 | build_string ("Args out of range")); | |
2120 | ||
2121 | Fput (Qvoid_function, Qerror_conditions, | |
6315e761 | 2122 | Fcons (Qvoid_function, error_tail)); |
7921925c JB |
2123 | Fput (Qvoid_function, Qerror_message, |
2124 | build_string ("Symbol's function definition is void")); | |
2125 | ||
ffd56f97 | 2126 | Fput (Qcyclic_function_indirection, Qerror_conditions, |
6315e761 | 2127 | Fcons (Qcyclic_function_indirection, error_tail)); |
ffd56f97 JB |
2128 | Fput (Qcyclic_function_indirection, Qerror_message, |
2129 | build_string ("Symbol's chain of function indirections contains a loop")); | |
2130 | ||
7921925c | 2131 | Fput (Qvoid_variable, Qerror_conditions, |
6315e761 | 2132 | Fcons (Qvoid_variable, error_tail)); |
7921925c JB |
2133 | Fput (Qvoid_variable, Qerror_message, |
2134 | build_string ("Symbol's value as variable is void")); | |
2135 | ||
2136 | Fput (Qsetting_constant, Qerror_conditions, | |
6315e761 | 2137 | Fcons (Qsetting_constant, error_tail)); |
7921925c JB |
2138 | Fput (Qsetting_constant, Qerror_message, |
2139 | build_string ("Attempt to set a constant symbol")); | |
2140 | ||
2141 | Fput (Qinvalid_read_syntax, Qerror_conditions, | |
6315e761 | 2142 | Fcons (Qinvalid_read_syntax, error_tail)); |
7921925c JB |
2143 | Fput (Qinvalid_read_syntax, Qerror_message, |
2144 | build_string ("Invalid read syntax")); | |
2145 | ||
2146 | Fput (Qinvalid_function, Qerror_conditions, | |
6315e761 | 2147 | Fcons (Qinvalid_function, error_tail)); |
7921925c JB |
2148 | Fput (Qinvalid_function, Qerror_message, |
2149 | build_string ("Invalid function")); | |
2150 | ||
2151 | Fput (Qwrong_number_of_arguments, Qerror_conditions, | |
6315e761 | 2152 | Fcons (Qwrong_number_of_arguments, error_tail)); |
7921925c JB |
2153 | Fput (Qwrong_number_of_arguments, Qerror_message, |
2154 | build_string ("Wrong number of arguments")); | |
2155 | ||
2156 | Fput (Qno_catch, Qerror_conditions, | |
6315e761 | 2157 | Fcons (Qno_catch, error_tail)); |
7921925c JB |
2158 | Fput (Qno_catch, Qerror_message, |
2159 | build_string ("No catch for tag")); | |
2160 | ||
2161 | Fput (Qend_of_file, Qerror_conditions, | |
6315e761 | 2162 | Fcons (Qend_of_file, error_tail)); |
7921925c JB |
2163 | Fput (Qend_of_file, Qerror_message, |
2164 | build_string ("End of file during parsing")); | |
2165 | ||
6315e761 | 2166 | arith_tail = Fcons (Qarith_error, error_tail); |
7921925c | 2167 | Fput (Qarith_error, Qerror_conditions, |
6315e761 | 2168 | arith_tail); |
7921925c JB |
2169 | Fput (Qarith_error, Qerror_message, |
2170 | build_string ("Arithmetic error")); | |
2171 | ||
2172 | Fput (Qbeginning_of_buffer, Qerror_conditions, | |
6315e761 | 2173 | Fcons (Qbeginning_of_buffer, error_tail)); |
7921925c JB |
2174 | Fput (Qbeginning_of_buffer, Qerror_message, |
2175 | build_string ("Beginning of buffer")); | |
2176 | ||
2177 | Fput (Qend_of_buffer, Qerror_conditions, | |
6315e761 | 2178 | Fcons (Qend_of_buffer, error_tail)); |
7921925c JB |
2179 | Fput (Qend_of_buffer, Qerror_message, |
2180 | build_string ("End of buffer")); | |
2181 | ||
2182 | Fput (Qbuffer_read_only, Qerror_conditions, | |
6315e761 | 2183 | Fcons (Qbuffer_read_only, error_tail)); |
7921925c JB |
2184 | Fput (Qbuffer_read_only, Qerror_message, |
2185 | build_string ("Buffer is read-only")); | |
2186 | ||
6315e761 RS |
2187 | #ifdef LISP_FLOAT_TYPE |
2188 | Qrange_error = intern ("range-error"); | |
2189 | Qdomain_error = intern ("domain-error"); | |
2190 | Qsingularity_error = intern ("singularity-error"); | |
2191 | Qoverflow_error = intern ("overflow-error"); | |
2192 | Qunderflow_error = intern ("underflow-error"); | |
2193 | ||
2194 | Fput (Qdomain_error, Qerror_conditions, | |
2195 | Fcons (Qdomain_error, arith_tail)); | |
2196 | Fput (Qdomain_error, Qerror_message, | |
2197 | build_string ("Arithmetic domain error")); | |
2198 | ||
2199 | Fput (Qrange_error, Qerror_conditions, | |
2200 | Fcons (Qrange_error, arith_tail)); | |
2201 | Fput (Qrange_error, Qerror_message, | |
2202 | build_string ("Arithmetic range error")); | |
2203 | ||
2204 | Fput (Qsingularity_error, Qerror_conditions, | |
2205 | Fcons (Qsingularity_error, Fcons (Qdomain_error, arith_tail))); | |
2206 | Fput (Qsingularity_error, Qerror_message, | |
2207 | build_string ("Arithmetic singularity error")); | |
2208 | ||
2209 | Fput (Qoverflow_error, Qerror_conditions, | |
2210 | Fcons (Qoverflow_error, Fcons (Qdomain_error, arith_tail))); | |
2211 | Fput (Qoverflow_error, Qerror_message, | |
2212 | build_string ("Arithmetic overflow error")); | |
2213 | ||
2214 | Fput (Qunderflow_error, Qerror_conditions, | |
2215 | Fcons (Qunderflow_error, Fcons (Qdomain_error, arith_tail))); | |
2216 | Fput (Qunderflow_error, Qerror_message, | |
2217 | build_string ("Arithmetic underflow error")); | |
2218 | ||
2219 | staticpro (&Qrange_error); | |
2220 | staticpro (&Qdomain_error); | |
2221 | staticpro (&Qsingularity_error); | |
2222 | staticpro (&Qoverflow_error); | |
2223 | staticpro (&Qunderflow_error); | |
2224 | #endif /* LISP_FLOAT_TYPE */ | |
2225 | ||
7921925c JB |
2226 | staticpro (&Qnil); |
2227 | staticpro (&Qt); | |
2228 | staticpro (&Qquote); | |
2229 | staticpro (&Qlambda); | |
2230 | staticpro (&Qsubr); | |
2231 | staticpro (&Qunbound); | |
2232 | staticpro (&Qerror_conditions); | |
2233 | staticpro (&Qerror_message); | |
2234 | staticpro (&Qtop_level); | |
2235 | ||
2236 | staticpro (&Qerror); | |
2237 | staticpro (&Qquit); | |
2238 | staticpro (&Qwrong_type_argument); | |
2239 | staticpro (&Qargs_out_of_range); | |
2240 | staticpro (&Qvoid_function); | |
ffd56f97 | 2241 | staticpro (&Qcyclic_function_indirection); |
7921925c JB |
2242 | staticpro (&Qvoid_variable); |
2243 | staticpro (&Qsetting_constant); | |
2244 | staticpro (&Qinvalid_read_syntax); | |
2245 | staticpro (&Qwrong_number_of_arguments); | |
2246 | staticpro (&Qinvalid_function); | |
2247 | staticpro (&Qno_catch); | |
2248 | staticpro (&Qend_of_file); | |
2249 | staticpro (&Qarith_error); | |
2250 | staticpro (&Qbeginning_of_buffer); | |
2251 | staticpro (&Qend_of_buffer); | |
2252 | staticpro (&Qbuffer_read_only); | |
638b77e6 | 2253 | staticpro (&Qmark_inactive); |
7921925c JB |
2254 | |
2255 | staticpro (&Qlistp); | |
2256 | staticpro (&Qconsp); | |
2257 | staticpro (&Qsymbolp); | |
2258 | staticpro (&Qintegerp); | |
2259 | staticpro (&Qnatnump); | |
8e86942b | 2260 | staticpro (&Qwholenump); |
7921925c JB |
2261 | staticpro (&Qstringp); |
2262 | staticpro (&Qarrayp); | |
2263 | staticpro (&Qsequencep); | |
2264 | staticpro (&Qbufferp); | |
2265 | staticpro (&Qvectorp); | |
2266 | staticpro (&Qchar_or_string_p); | |
2267 | staticpro (&Qmarkerp); | |
07bd8472 | 2268 | staticpro (&Qbuffer_or_string_p); |
7921925c JB |
2269 | staticpro (&Qinteger_or_marker_p); |
2270 | #ifdef LISP_FLOAT_TYPE | |
2271 | staticpro (&Qfloatp); | |
464f8898 RS |
2272 | staticpro (&Qnumberp); |
2273 | staticpro (&Qnumber_or_marker_p); | |
7921925c JB |
2274 | #endif /* LISP_FLOAT_TYPE */ |
2275 | ||
2276 | staticpro (&Qboundp); | |
2277 | staticpro (&Qfboundp); | |
2278 | staticpro (&Qcdr); | |
ab297811 RS |
2279 | staticpro (&Qad_advice_info); |
2280 | staticpro (&Qad_activate); | |
7921925c JB |
2281 | |
2282 | defsubr (&Seq); | |
2283 | defsubr (&Snull); | |
2284 | defsubr (&Slistp); | |
2285 | defsubr (&Snlistp); | |
2286 | defsubr (&Sconsp); | |
2287 | defsubr (&Satom); | |
2288 | defsubr (&Sintegerp); | |
464f8898 | 2289 | defsubr (&Sinteger_or_marker_p); |
7921925c JB |
2290 | defsubr (&Snumberp); |
2291 | defsubr (&Snumber_or_marker_p); | |
464f8898 RS |
2292 | #ifdef LISP_FLOAT_TYPE |
2293 | defsubr (&Sfloatp); | |
7921925c JB |
2294 | #endif /* LISP_FLOAT_TYPE */ |
2295 | defsubr (&Snatnump); | |
2296 | defsubr (&Ssymbolp); | |
2297 | defsubr (&Sstringp); | |
2298 | defsubr (&Svectorp); | |
2299 | defsubr (&Sarrayp); | |
2300 | defsubr (&Ssequencep); | |
2301 | defsubr (&Sbufferp); | |
2302 | defsubr (&Smarkerp); | |
7921925c | 2303 | defsubr (&Ssubrp); |
dbc4e1c1 | 2304 | defsubr (&Sbyte_code_function_p); |
7921925c JB |
2305 | defsubr (&Schar_or_string_p); |
2306 | defsubr (&Scar); | |
2307 | defsubr (&Scdr); | |
2308 | defsubr (&Scar_safe); | |
2309 | defsubr (&Scdr_safe); | |
2310 | defsubr (&Ssetcar); | |
2311 | defsubr (&Ssetcdr); | |
2312 | defsubr (&Ssymbol_function); | |
ffd56f97 | 2313 | defsubr (&Sindirect_function); |
7921925c JB |
2314 | defsubr (&Ssymbol_plist); |
2315 | defsubr (&Ssymbol_name); | |
2316 | defsubr (&Smakunbound); | |
2317 | defsubr (&Sfmakunbound); | |
2318 | defsubr (&Sboundp); | |
2319 | defsubr (&Sfboundp); | |
2320 | defsubr (&Sfset); | |
80df38a2 | 2321 | defsubr (&Sdefalias); |
d9bcdb34 | 2322 | defsubr (&Sdefine_function); |
7921925c JB |
2323 | defsubr (&Ssetplist); |
2324 | defsubr (&Ssymbol_value); | |
2325 | defsubr (&Sset); | |
2326 | defsubr (&Sdefault_boundp); | |
2327 | defsubr (&Sdefault_value); | |
2328 | defsubr (&Sset_default); | |
2329 | defsubr (&Ssetq_default); | |
2330 | defsubr (&Smake_variable_buffer_local); | |
2331 | defsubr (&Smake_local_variable); | |
2332 | defsubr (&Skill_local_variable); | |
62476adc | 2333 | defsubr (&Slocal_variable_p); |
7921925c JB |
2334 | defsubr (&Saref); |
2335 | defsubr (&Saset); | |
f2980264 | 2336 | defsubr (&Snumber_to_string); |
25e40a4b | 2337 | defsubr (&Sstring_to_number); |
7921925c JB |
2338 | defsubr (&Seqlsign); |
2339 | defsubr (&Slss); | |
2340 | defsubr (&Sgtr); | |
2341 | defsubr (&Sleq); | |
2342 | defsubr (&Sgeq); | |
2343 | defsubr (&Sneq); | |
2344 | defsubr (&Szerop); | |
2345 | defsubr (&Splus); | |
2346 | defsubr (&Sminus); | |
2347 | defsubr (&Stimes); | |
2348 | defsubr (&Squo); | |
2349 | defsubr (&Srem); | |
44fa9da5 | 2350 | defsubr (&Smod); |
7921925c JB |
2351 | defsubr (&Smax); |
2352 | defsubr (&Smin); | |
2353 | defsubr (&Slogand); | |
2354 | defsubr (&Slogior); | |
2355 | defsubr (&Slogxor); | |
2356 | defsubr (&Slsh); | |
2357 | defsubr (&Sash); | |
2358 | defsubr (&Sadd1); | |
2359 | defsubr (&Ssub1); | |
2360 | defsubr (&Slognot); | |
8e86942b | 2361 | |
c80bd143 | 2362 | XSYMBOL (Qwholenump)->function = XSYMBOL (Qnatnump)->function; |
7921925c JB |
2363 | } |
2364 | ||
a33ef3ab | 2365 | SIGTYPE |
7921925c JB |
2366 | arith_error (signo) |
2367 | int signo; | |
2368 | { | |
2369 | #ifdef USG | |
2370 | /* USG systems forget handlers when they are used; | |
2371 | must reestablish each time */ | |
2372 | signal (signo, arith_error); | |
2373 | #endif /* USG */ | |
2374 | #ifdef VMS | |
2375 | /* VMS systems are like USG. */ | |
2376 | signal (signo, arith_error); | |
2377 | #endif /* VMS */ | |
2378 | #ifdef BSD4_1 | |
2379 | sigrelse (SIGFPE); | |
2380 | #else /* not BSD4_1 */ | |
e065a56e | 2381 | sigsetmask (SIGEMPTYMASK); |
7921925c JB |
2382 | #endif /* not BSD4_1 */ |
2383 | ||
2384 | Fsignal (Qarith_error, Qnil); | |
2385 | } | |
2386 | ||
2387 | init_data () | |
2388 | { | |
2389 | /* Don't do this if just dumping out. | |
2390 | We don't want to call `signal' in this case | |
2391 | so that we don't have trouble with dumping | |
2392 | signal-delivering routines in an inconsistent state. */ | |
2393 | #ifndef CANNOT_DUMP | |
2394 | if (!initialized) | |
2395 | return; | |
2396 | #endif /* CANNOT_DUMP */ | |
2397 | signal (SIGFPE, arith_error); | |
7403b5c8 | 2398 | |
7921925c JB |
2399 | #ifdef uts |
2400 | signal (SIGEMT, arith_error); | |
2401 | #endif /* uts */ | |
2402 | } |