Commit | Line | Data |
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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 | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
7921925c JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
7921925c JB |
20 | |
21 | ||
22 | #include <signal.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
7921925c | 25 | #include "lisp.h" |
29eab336 | 26 | #include "puresize.h" |
8313c4e7 | 27 | #include "charset.h" |
7921925c JB |
28 | |
29 | #ifndef standalone | |
30 | #include "buffer.h" | |
077d751f | 31 | #include "keyboard.h" |
7921925c JB |
32 | #endif |
33 | ||
a44804c2 | 34 | #include "syssignal.h" |
fb8e9847 | 35 | |
7921925c | 36 | #ifdef LISP_FLOAT_TYPE |
defa77b5 | 37 | |
93b91208 | 38 | #ifdef STDC_HEADERS |
ad8d56b9 | 39 | #include <float.h> |
93b91208 JB |
40 | #include <stdlib.h> |
41 | #endif | |
defa77b5 | 42 | |
ad8d56b9 PE |
43 | /* If IEEE_FLOATING_POINT isn't defined, default it from FLT_*. */ |
44 | #ifndef IEEE_FLOATING_POINT | |
45 | #if (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \ | |
46 | && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128) | |
47 | #define IEEE_FLOATING_POINT 1 | |
48 | #else | |
49 | #define IEEE_FLOATING_POINT 0 | |
50 | #endif | |
51 | #endif | |
52 | ||
defa77b5 RS |
53 | /* Work around a problem that happens because math.h on hpux 7 |
54 | defines two static variables--which, in Emacs, are not really static, | |
55 | because `static' is defined as nothing. The problem is that they are | |
56 | here, in floatfns.c, and in lread.c. | |
57 | These macros prevent the name conflict. */ | |
58 | #if defined (HPUX) && !defined (HPUX8) | |
59 | #define _MAXLDBL data_c_maxldbl | |
60 | #define _NMAXLDBL data_c_nmaxldbl | |
61 | #endif | |
62 | ||
7921925c JB |
63 | #include <math.h> |
64 | #endif /* LISP_FLOAT_TYPE */ | |
65 | ||
024ec58f BF |
66 | #if !defined (atof) |
67 | extern double atof (); | |
68 | #endif /* !atof */ | |
69 | ||
7921925c JB |
70 | Lisp_Object Qnil, Qt, Qquote, Qlambda, Qsubr, Qunbound; |
71 | Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; | |
72 | Lisp_Object Qerror, Qquit, Qwrong_type_argument, Qargs_out_of_range; | |
ffd56f97 | 73 | Lisp_Object Qvoid_variable, Qvoid_function, Qcyclic_function_indirection; |
7921925c JB |
74 | Lisp_Object Qsetting_constant, Qinvalid_read_syntax; |
75 | Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; | |
3b8819d6 | 76 | Lisp_Object Qend_of_file, Qarith_error, Qmark_inactive; |
7921925c | 77 | Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
8e86942b | 78 | Lisp_Object Qintegerp, Qnatnump, Qwholenump, Qsymbolp, Qlistp, Qconsp; |
7921925c JB |
79 | Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp; |
80 | Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp; | |
07bd8472 | 81 | Lisp_Object Qbuffer_or_string_p; |
7921925c | 82 | Lisp_Object Qboundp, Qfboundp; |
7f0edce7 | 83 | Lisp_Object Qchar_table_p, Qvector_or_char_table_p; |
39bcc759 | 84 | |
7921925c | 85 | Lisp_Object Qcdr; |
ab297811 | 86 | Lisp_Object Qad_advice_info, Qad_activate; |
7921925c | 87 | |
6315e761 RS |
88 | Lisp_Object Qrange_error, Qdomain_error, Qsingularity_error; |
89 | Lisp_Object Qoverflow_error, Qunderflow_error; | |
90 | ||
7921925c | 91 | #ifdef LISP_FLOAT_TYPE |
464f8898 | 92 | Lisp_Object Qfloatp; |
7921925c JB |
93 | Lisp_Object Qnumberp, Qnumber_or_marker_p; |
94 | #endif | |
95 | ||
39bcc759 | 96 | static Lisp_Object Qinteger, Qsymbol, Qstring, Qcons, Qmarker, Qoverlay; |
8313c4e7 KH |
97 | static Lisp_Object Qfloat, Qwindow_configuration, Qwindow; |
98 | Lisp_Object Qprocess; | |
39bcc759 | 99 | static Lisp_Object Qcompiled_function, Qbuffer, Qframe, Qvector; |
fc67d5be | 100 | static Lisp_Object Qchar_table, Qbool_vector; |
39bcc759 | 101 | |
7921925c JB |
102 | static Lisp_Object swap_in_symval_forwarding (); |
103 | ||
104 | Lisp_Object | |
105 | wrong_type_argument (predicate, value) | |
106 | register Lisp_Object predicate, value; | |
107 | { | |
108 | register Lisp_Object tem; | |
109 | do | |
110 | { | |
111 | if (!EQ (Vmocklisp_arguments, Qt)) | |
112 | { | |
e9ebc175 | 113 | if (STRINGP (value) && |
7921925c | 114 | (EQ (predicate, Qintegerp) || EQ (predicate, Qinteger_or_marker_p))) |
25e40a4b | 115 | return Fstring_to_number (value); |
e9ebc175 | 116 | if (INTEGERP (value) && EQ (predicate, Qstringp)) |
f2980264 | 117 | return Fnumber_to_string (value); |
7921925c | 118 | } |
e1351ff7 RS |
119 | |
120 | /* If VALUE is not even a valid Lisp object, abort here | |
121 | where we can get a backtrace showing where it came from. */ | |
04be3993 | 122 | if ((unsigned int) XGCTYPE (value) >= Lisp_Type_Limit) |
e1351ff7 RS |
123 | abort (); |
124 | ||
7921925c JB |
125 | value = Fsignal (Qwrong_type_argument, Fcons (predicate, Fcons (value, Qnil))); |
126 | tem = call1 (predicate, value); | |
127 | } | |
a33ef3ab | 128 | while (NILP (tem)); |
7921925c JB |
129 | return value; |
130 | } | |
131 | ||
132 | pure_write_error () | |
133 | { | |
134 | error ("Attempt to modify read-only object"); | |
135 | } | |
136 | ||
137 | void | |
138 | args_out_of_range (a1, a2) | |
139 | Lisp_Object a1, a2; | |
140 | { | |
141 | while (1) | |
142 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Qnil))); | |
143 | } | |
144 | ||
145 | void | |
146 | args_out_of_range_3 (a1, a2, a3) | |
147 | Lisp_Object a1, a2, a3; | |
148 | { | |
149 | while (1) | |
150 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Fcons (a3, Qnil)))); | |
151 | } | |
152 | ||
7921925c JB |
153 | /* On some machines, XINT needs a temporary location. |
154 | Here it is, in case it is needed. */ | |
155 | ||
156 | int sign_extend_temp; | |
157 | ||
158 | /* On a few machines, XINT can only be done by calling this. */ | |
159 | ||
160 | int | |
161 | sign_extend_lisp_int (num) | |
a0ed95ea | 162 | EMACS_INT num; |
7921925c | 163 | { |
a0ed95ea RS |
164 | if (num & (((EMACS_INT) 1) << (VALBITS - 1))) |
165 | return num | (((EMACS_INT) (-1)) << VALBITS); | |
7921925c | 166 | else |
a0ed95ea | 167 | return num & ((((EMACS_INT) 1) << VALBITS) - 1); |
7921925c JB |
168 | } |
169 | \f | |
170 | /* Data type predicates */ | |
171 | ||
172 | DEFUN ("eq", Feq, Seq, 2, 2, 0, | |
173 | "T if the two args are the same Lisp object.") | |
174 | (obj1, obj2) | |
175 | Lisp_Object obj1, obj2; | |
176 | { | |
177 | if (EQ (obj1, obj2)) | |
178 | return Qt; | |
179 | return Qnil; | |
180 | } | |
181 | ||
182 | DEFUN ("null", Fnull, Snull, 1, 1, 0, "T if OBJECT is nil.") | |
39bcc759 RS |
183 | (object) |
184 | Lisp_Object object; | |
7921925c | 185 | { |
39bcc759 | 186 | if (NILP (object)) |
7921925c JB |
187 | return Qt; |
188 | return Qnil; | |
189 | } | |
190 | ||
39bcc759 RS |
191 | DEFUN ("type-of", Ftype_of, Stype_of, 1, 1, 0, |
192 | "Return a symbol representing the type of OBJECT.\n\ | |
193 | The symbol returned names the object's basic type;\n\ | |
194 | for example, (type-of 1) returns `integer'.") | |
195 | (object) | |
196 | Lisp_Object object; | |
197 | { | |
198 | switch (XGCTYPE (object)) | |
199 | { | |
200 | case Lisp_Int: | |
201 | return Qinteger; | |
202 | ||
203 | case Lisp_Symbol: | |
204 | return Qsymbol; | |
205 | ||
206 | case Lisp_String: | |
207 | return Qstring; | |
208 | ||
209 | case Lisp_Cons: | |
210 | return Qcons; | |
211 | ||
212 | case Lisp_Misc: | |
324a6eef | 213 | switch (XMISCTYPE (object)) |
39bcc759 RS |
214 | { |
215 | case Lisp_Misc_Marker: | |
216 | return Qmarker; | |
217 | case Lisp_Misc_Overlay: | |
218 | return Qoverlay; | |
219 | case Lisp_Misc_Float: | |
220 | return Qfloat; | |
221 | } | |
222 | abort (); | |
223 | ||
224 | case Lisp_Vectorlike: | |
225 | if (GC_WINDOW_CONFIGURATIONP (object)) | |
226 | return Qwindow_configuration; | |
227 | if (GC_PROCESSP (object)) | |
228 | return Qprocess; | |
229 | if (GC_WINDOWP (object)) | |
230 | return Qwindow; | |
231 | if (GC_SUBRP (object)) | |
232 | return Qsubr; | |
233 | if (GC_COMPILEDP (object)) | |
234 | return Qcompiled_function; | |
235 | if (GC_BUFFERP (object)) | |
236 | return Qbuffer; | |
fc67d5be KH |
237 | if (GC_CHAR_TABLE_P (object)) |
238 | return Qchar_table; | |
239 | if (GC_BOOL_VECTOR_P (object)) | |
240 | return Qbool_vector; | |
39bcc759 RS |
241 | if (GC_FRAMEP (object)) |
242 | return Qframe; | |
39bcc759 RS |
243 | return Qvector; |
244 | ||
245 | #ifdef LISP_FLOAT_TYPE | |
246 | case Lisp_Float: | |
247 | return Qfloat; | |
248 | #endif | |
249 | ||
250 | default: | |
251 | abort (); | |
252 | } | |
253 | } | |
254 | ||
7921925c | 255 | DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0, "T if OBJECT is a cons cell.") |
39bcc759 RS |
256 | (object) |
257 | Lisp_Object object; | |
7921925c | 258 | { |
39bcc759 | 259 | if (CONSP (object)) |
7921925c JB |
260 | return Qt; |
261 | return Qnil; | |
262 | } | |
263 | ||
264 | DEFUN ("atom", Fatom, Satom, 1, 1, 0, "T if OBJECT is not a cons cell. This includes nil.") | |
39bcc759 RS |
265 | (object) |
266 | Lisp_Object object; | |
7921925c | 267 | { |
39bcc759 | 268 | if (CONSP (object)) |
7921925c JB |
269 | return Qnil; |
270 | return Qt; | |
271 | } | |
272 | ||
273 | DEFUN ("listp", Flistp, Slistp, 1, 1, 0, "T if OBJECT is a list. This includes nil.") | |
39bcc759 RS |
274 | (object) |
275 | Lisp_Object object; | |
7921925c | 276 | { |
39bcc759 | 277 | if (CONSP (object) || NILP (object)) |
7921925c JB |
278 | return Qt; |
279 | return Qnil; | |
280 | } | |
281 | ||
282 | DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0, "T if OBJECT is not a list. Lists include nil.") | |
39bcc759 RS |
283 | (object) |
284 | Lisp_Object object; | |
7921925c | 285 | { |
39bcc759 | 286 | if (CONSP (object) || NILP (object)) |
7921925c JB |
287 | return Qnil; |
288 | return Qt; | |
289 | } | |
290 | \f | |
291 | DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0, "T if OBJECT is a symbol.") | |
39bcc759 RS |
292 | (object) |
293 | Lisp_Object object; | |
7921925c | 294 | { |
39bcc759 | 295 | if (SYMBOLP (object)) |
7921925c JB |
296 | return Qt; |
297 | return Qnil; | |
298 | } | |
299 | ||
300 | DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0, "T if OBJECT is a vector.") | |
39bcc759 RS |
301 | (object) |
302 | Lisp_Object object; | |
7921925c | 303 | { |
39bcc759 | 304 | if (VECTORP (object)) |
7921925c JB |
305 | return Qt; |
306 | return Qnil; | |
307 | } | |
308 | ||
309 | DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0, "T if OBJECT is a string.") | |
39bcc759 RS |
310 | (object) |
311 | Lisp_Object object; | |
7921925c | 312 | { |
39bcc759 | 313 | if (STRINGP (object)) |
7921925c JB |
314 | return Qt; |
315 | return Qnil; | |
316 | } | |
317 | ||
4d276982 RS |
318 | DEFUN ("char-table-p", Fchar_table_p, Schar_table_p, 1, 1, 0, "T if OBJECT is a char-table.") |
319 | (object) | |
320 | Lisp_Object object; | |
321 | { | |
322 | if (CHAR_TABLE_P (object)) | |
323 | return Qt; | |
324 | return Qnil; | |
325 | } | |
326 | ||
7f0edce7 RS |
327 | DEFUN ("vector-or-char-table-p", Fvector_or_char_table_p, |
328 | Svector_or_char_table_p, 1, 1, 0, | |
329 | "T if OBJECT is a char-table or vector.") | |
330 | (object) | |
331 | Lisp_Object object; | |
332 | { | |
333 | if (VECTORP (object) || CHAR_TABLE_P (object)) | |
334 | return Qt; | |
335 | return Qnil; | |
336 | } | |
337 | ||
4d276982 RS |
338 | DEFUN ("bool-vector-p", Fbool_vector_p, Sbool_vector_p, 1, 1, 0, "T if OBJECT is a bool-vector.") |
339 | (object) | |
340 | Lisp_Object object; | |
341 | { | |
342 | if (BOOL_VECTOR_P (object)) | |
343 | return Qt; | |
344 | return Qnil; | |
345 | } | |
346 | ||
7921925c | 347 | DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0, "T if OBJECT is an array (string or vector).") |
39bcc759 RS |
348 | (object) |
349 | Lisp_Object object; | |
7921925c | 350 | { |
39bcc759 | 351 | if (VECTORP (object) || STRINGP (object)) |
7921925c JB |
352 | return Qt; |
353 | return Qnil; | |
354 | } | |
355 | ||
356 | DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0, | |
357 | "T if OBJECT is a sequence (list or array).") | |
39bcc759 RS |
358 | (object) |
359 | register Lisp_Object object; | |
7921925c | 360 | { |
4d276982 RS |
361 | if (CONSP (object) || NILP (object) || VECTORP (object) || STRINGP (object) |
362 | || CHAR_TABLE_P (object) || BOOL_VECTOR_P (object)) | |
7921925c JB |
363 | return Qt; |
364 | return Qnil; | |
365 | } | |
366 | ||
367 | DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0, "T if OBJECT is an editor buffer.") | |
39bcc759 RS |
368 | (object) |
369 | Lisp_Object object; | |
7921925c | 370 | { |
39bcc759 | 371 | if (BUFFERP (object)) |
7921925c JB |
372 | return Qt; |
373 | return Qnil; | |
374 | } | |
375 | ||
376 | DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0, "T if OBJECT is a marker (editor pointer).") | |
39bcc759 RS |
377 | (object) |
378 | Lisp_Object object; | |
7921925c | 379 | { |
39bcc759 | 380 | if (MARKERP (object)) |
7921925c JB |
381 | return Qt; |
382 | return Qnil; | |
383 | } | |
384 | ||
7921925c | 385 | DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0, "T if OBJECT is a built-in function.") |
39bcc759 RS |
386 | (object) |
387 | Lisp_Object object; | |
7921925c | 388 | { |
39bcc759 | 389 | if (SUBRP (object)) |
7921925c JB |
390 | return Qt; |
391 | return Qnil; | |
392 | } | |
393 | ||
dbc4e1c1 JB |
394 | DEFUN ("byte-code-function-p", Fbyte_code_function_p, Sbyte_code_function_p, |
395 | 1, 1, 0, "T if OBJECT is a byte-compiled function object.") | |
39bcc759 RS |
396 | (object) |
397 | Lisp_Object object; | |
7921925c | 398 | { |
39bcc759 | 399 | if (COMPILEDP (object)) |
7921925c JB |
400 | return Qt; |
401 | return Qnil; | |
402 | } | |
403 | ||
0321d75c KH |
404 | DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0, |
405 | "T if OBJECT is a character (an integer) or a string.") | |
39bcc759 RS |
406 | (object) |
407 | register Lisp_Object object; | |
7921925c | 408 | { |
39bcc759 | 409 | if (INTEGERP (object) || STRINGP (object)) |
7921925c JB |
410 | return Qt; |
411 | return Qnil; | |
412 | } | |
413 | \f | |
0321d75c | 414 | DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0, "T if OBJECT is an integer.") |
39bcc759 RS |
415 | (object) |
416 | Lisp_Object object; | |
7921925c | 417 | { |
39bcc759 | 418 | if (INTEGERP (object)) |
7921925c JB |
419 | return Qt; |
420 | return Qnil; | |
421 | } | |
422 | ||
464f8898 RS |
423 | DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p, 1, 1, 0, |
424 | "T if OBJECT is an integer or a marker (editor pointer).") | |
39bcc759 RS |
425 | (object) |
426 | register Lisp_Object object; | |
7921925c | 427 | { |
39bcc759 | 428 | if (MARKERP (object) || INTEGERP (object)) |
7921925c JB |
429 | return Qt; |
430 | return Qnil; | |
431 | } | |
432 | ||
0321d75c KH |
433 | DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0, |
434 | "T if OBJECT is a nonnegative integer.") | |
39bcc759 RS |
435 | (object) |
436 | Lisp_Object object; | |
7921925c | 437 | { |
39bcc759 | 438 | if (NATNUMP (object)) |
7921925c JB |
439 | return Qt; |
440 | return Qnil; | |
441 | } | |
442 | ||
443 | DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0, | |
444 | "T if OBJECT is a number (floating point or integer).") | |
39bcc759 RS |
445 | (object) |
446 | Lisp_Object object; | |
7921925c | 447 | { |
39bcc759 | 448 | if (NUMBERP (object)) |
7921925c | 449 | return Qt; |
dbc4e1c1 JB |
450 | else |
451 | return Qnil; | |
7921925c JB |
452 | } |
453 | ||
454 | DEFUN ("number-or-marker-p", Fnumber_or_marker_p, | |
455 | Snumber_or_marker_p, 1, 1, 0, | |
456 | "T if OBJECT is a number or a marker.") | |
39bcc759 RS |
457 | (object) |
458 | Lisp_Object object; | |
7921925c | 459 | { |
39bcc759 | 460 | if (NUMBERP (object) || MARKERP (object)) |
7921925c JB |
461 | return Qt; |
462 | return Qnil; | |
463 | } | |
464f8898 RS |
464 | |
465 | #ifdef LISP_FLOAT_TYPE | |
466 | DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0, | |
467 | "T if OBJECT is a floating point number.") | |
39bcc759 RS |
468 | (object) |
469 | Lisp_Object object; | |
464f8898 | 470 | { |
39bcc759 | 471 | if (FLOATP (object)) |
464f8898 RS |
472 | return Qt; |
473 | return Qnil; | |
474 | } | |
7921925c JB |
475 | #endif /* LISP_FLOAT_TYPE */ |
476 | \f | |
477 | /* Extract and set components of lists */ | |
478 | ||
479 | DEFUN ("car", Fcar, Scar, 1, 1, 0, | |
e1960a18 | 480 | "Return the car of LIST. If arg is nil, return nil.\n\ |
7921925c JB |
481 | Error if arg is not nil and not a cons cell. See also `car-safe'.") |
482 | (list) | |
483 | register Lisp_Object list; | |
484 | { | |
485 | while (1) | |
486 | { | |
e9ebc175 | 487 | if (CONSP (list)) |
7921925c JB |
488 | return XCONS (list)->car; |
489 | else if (EQ (list, Qnil)) | |
490 | return Qnil; | |
491 | else | |
492 | list = wrong_type_argument (Qlistp, list); | |
493 | } | |
494 | } | |
495 | ||
496 | DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0, | |
497 | "Return the car of OBJECT if it is a cons cell, or else nil.") | |
498 | (object) | |
499 | Lisp_Object object; | |
500 | { | |
e9ebc175 | 501 | if (CONSP (object)) |
7921925c JB |
502 | return XCONS (object)->car; |
503 | else | |
504 | return Qnil; | |
505 | } | |
506 | ||
507 | DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0, | |
e1960a18 | 508 | "Return the cdr of LIST. If arg is nil, return nil.\n\ |
7921925c JB |
509 | Error if arg is not nil and not a cons cell. See also `cdr-safe'.") |
510 | ||
511 | (list) | |
512 | register Lisp_Object list; | |
513 | { | |
514 | while (1) | |
515 | { | |
e9ebc175 | 516 | if (CONSP (list)) |
7921925c JB |
517 | return XCONS (list)->cdr; |
518 | else if (EQ (list, Qnil)) | |
519 | return Qnil; | |
520 | else | |
521 | list = wrong_type_argument (Qlistp, list); | |
522 | } | |
523 | } | |
524 | ||
525 | DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0, | |
b7abc8fa | 526 | "Return the cdr of OBJECT if it is a cons cell, or else nil.") |
7921925c JB |
527 | (object) |
528 | Lisp_Object object; | |
529 | { | |
e9ebc175 | 530 | if (CONSP (object)) |
7921925c JB |
531 | return XCONS (object)->cdr; |
532 | else | |
533 | return Qnil; | |
534 | } | |
535 | ||
536 | DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0, | |
e1960a18 | 537 | "Set the car of CELL to be NEWCAR. Returns NEWCAR.") |
7921925c JB |
538 | (cell, newcar) |
539 | register Lisp_Object cell, newcar; | |
540 | { | |
e9ebc175 | 541 | if (!CONSP (cell)) |
7921925c JB |
542 | cell = wrong_type_argument (Qconsp, cell); |
543 | ||
544 | CHECK_IMPURE (cell); | |
545 | XCONS (cell)->car = newcar; | |
546 | return newcar; | |
547 | } | |
548 | ||
549 | DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0, | |
e1960a18 | 550 | "Set the cdr of CELL to be NEWCDR. Returns NEWCDR.") |
7921925c JB |
551 | (cell, newcdr) |
552 | register Lisp_Object cell, newcdr; | |
553 | { | |
e9ebc175 | 554 | if (!CONSP (cell)) |
7921925c JB |
555 | cell = wrong_type_argument (Qconsp, cell); |
556 | ||
557 | CHECK_IMPURE (cell); | |
558 | XCONS (cell)->cdr = newcdr; | |
559 | return newcdr; | |
560 | } | |
561 | \f | |
562 | /* Extract and set components of symbols */ | |
563 | ||
564 | DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0, "T if SYMBOL's value is not void.") | |
d9c2a0f2 EN |
565 | (symbol) |
566 | register Lisp_Object symbol; | |
7921925c JB |
567 | { |
568 | Lisp_Object valcontents; | |
d9c2a0f2 | 569 | CHECK_SYMBOL (symbol, 0); |
7921925c | 570 | |
d9c2a0f2 | 571 | valcontents = XSYMBOL (symbol)->value; |
7921925c | 572 | |
aabf6bec KH |
573 | if (BUFFER_LOCAL_VALUEP (valcontents) |
574 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 575 | valcontents = swap_in_symval_forwarding (symbol, valcontents); |
7921925c | 576 | |
1bfcade3 | 577 | return (EQ (valcontents, Qunbound) ? Qnil : Qt); |
7921925c JB |
578 | } |
579 | ||
580 | DEFUN ("fboundp", Ffboundp, Sfboundp, 1, 1, 0, "T if SYMBOL's function definition is not void.") | |
d9c2a0f2 EN |
581 | (symbol) |
582 | register Lisp_Object symbol; | |
7921925c | 583 | { |
d9c2a0f2 EN |
584 | CHECK_SYMBOL (symbol, 0); |
585 | return (EQ (XSYMBOL (symbol)->function, Qunbound) ? Qnil : Qt); | |
7921925c JB |
586 | } |
587 | ||
588 | DEFUN ("makunbound", Fmakunbound, Smakunbound, 1, 1, 0, "Make SYMBOL's value be void.") | |
d9c2a0f2 EN |
589 | (symbol) |
590 | register Lisp_Object symbol; | |
7921925c | 591 | { |
d9c2a0f2 EN |
592 | CHECK_SYMBOL (symbol, 0); |
593 | if (NILP (symbol) || EQ (symbol, Qt)) | |
594 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
595 | Fset (symbol, Qunbound); | |
596 | return symbol; | |
7921925c JB |
597 | } |
598 | ||
599 | DEFUN ("fmakunbound", Ffmakunbound, Sfmakunbound, 1, 1, 0, "Make SYMBOL's function definition be void.") | |
d9c2a0f2 EN |
600 | (symbol) |
601 | register Lisp_Object symbol; | |
7921925c | 602 | { |
d9c2a0f2 EN |
603 | CHECK_SYMBOL (symbol, 0); |
604 | if (NILP (symbol) || EQ (symbol, Qt)) | |
605 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
606 | XSYMBOL (symbol)->function = Qunbound; | |
607 | return symbol; | |
7921925c JB |
608 | } |
609 | ||
610 | DEFUN ("symbol-function", Fsymbol_function, Ssymbol_function, 1, 1, 0, | |
611 | "Return SYMBOL's function definition. Error if that is void.") | |
ffd56f97 JB |
612 | (symbol) |
613 | register Lisp_Object symbol; | |
7921925c | 614 | { |
ffd56f97 JB |
615 | CHECK_SYMBOL (symbol, 0); |
616 | if (EQ (XSYMBOL (symbol)->function, Qunbound)) | |
617 | return Fsignal (Qvoid_function, Fcons (symbol, Qnil)); | |
618 | return XSYMBOL (symbol)->function; | |
7921925c JB |
619 | } |
620 | ||
621 | DEFUN ("symbol-plist", Fsymbol_plist, Ssymbol_plist, 1, 1, 0, "Return SYMBOL's property list.") | |
d9c2a0f2 EN |
622 | (symbol) |
623 | register Lisp_Object symbol; | |
7921925c | 624 | { |
d9c2a0f2 EN |
625 | CHECK_SYMBOL (symbol, 0); |
626 | return XSYMBOL (symbol)->plist; | |
7921925c JB |
627 | } |
628 | ||
629 | DEFUN ("symbol-name", Fsymbol_name, Ssymbol_name, 1, 1, 0, "Return SYMBOL's name, a string.") | |
d9c2a0f2 EN |
630 | (symbol) |
631 | register Lisp_Object symbol; | |
7921925c JB |
632 | { |
633 | register Lisp_Object name; | |
634 | ||
d9c2a0f2 EN |
635 | CHECK_SYMBOL (symbol, 0); |
636 | XSETSTRING (name, XSYMBOL (symbol)->name); | |
7921925c JB |
637 | return name; |
638 | } | |
639 | ||
640 | DEFUN ("fset", Ffset, Sfset, 2, 2, 0, | |
8c0b5540 RS |
641 | "Set SYMBOL's function definition to DEFINITION, and return DEFINITION.") |
642 | (symbol, definition) | |
643 | register Lisp_Object symbol, definition; | |
d9c2a0f2 EN |
644 | { |
645 | CHECK_SYMBOL (symbol, 0); | |
646 | if (NILP (symbol) || EQ (symbol, Qt)) | |
647 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
648 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (symbol)->function, Qunbound)) | |
649 | Vautoload_queue = Fcons (Fcons (symbol, XSYMBOL (symbol)->function), | |
7921925c | 650 | Vautoload_queue); |
8c0b5540 | 651 | XSYMBOL (symbol)->function = definition; |
f845f2c9 | 652 | /* Handle automatic advice activation */ |
d9c2a0f2 | 653 | if (CONSP (XSYMBOL (symbol)->plist) && !NILP (Fget (symbol, Qad_advice_info))) |
f845f2c9 | 654 | { |
d9c2a0f2 | 655 | call2 (Qad_activate, symbol, Qnil); |
8c0b5540 | 656 | definition = XSYMBOL (symbol)->function; |
f845f2c9 | 657 | } |
8c0b5540 | 658 | return definition; |
7921925c JB |
659 | } |
660 | ||
80df38a2 | 661 | DEFUN ("defalias", Fdefalias, Sdefalias, 2, 2, 0, |
73e0d965 | 662 | "Set SYMBOL's function definition to DEFINITION, and return DEFINITION.\n\ |
fc08c367 | 663 | Associates the function with the current load file, if any.") |
73e0d965 RS |
664 | (symbol, definition) |
665 | register Lisp_Object symbol, definition; | |
fc08c367 | 666 | { |
d9c2a0f2 EN |
667 | CHECK_SYMBOL (symbol, 0); |
668 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (symbol)->function, Qunbound)) | |
669 | Vautoload_queue = Fcons (Fcons (symbol, XSYMBOL (symbol)->function), | |
fc08c367 | 670 | Vautoload_queue); |
73e0d965 | 671 | XSYMBOL (symbol)->function = definition; |
ab297811 | 672 | /* Handle automatic advice activation */ |
d9c2a0f2 | 673 | if (CONSP (XSYMBOL (symbol)->plist) && !NILP (Fget (symbol, Qad_advice_info))) |
ab297811 | 674 | { |
d9c2a0f2 | 675 | call2 (Qad_activate, symbol, Qnil); |
73e0d965 | 676 | definition = XSYMBOL (symbol)->function; |
ab297811 | 677 | } |
d9c2a0f2 | 678 | LOADHIST_ATTACH (symbol); |
73e0d965 | 679 | return definition; |
fc08c367 RS |
680 | } |
681 | ||
7921925c JB |
682 | DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0, |
683 | "Set SYMBOL's property list to NEWVAL, and return NEWVAL.") | |
d9c2a0f2 EN |
684 | (symbol, newplist) |
685 | register Lisp_Object symbol, newplist; | |
7921925c | 686 | { |
d9c2a0f2 EN |
687 | CHECK_SYMBOL (symbol, 0); |
688 | XSYMBOL (symbol)->plist = newplist; | |
7921925c JB |
689 | return newplist; |
690 | } | |
ffd56f97 | 691 | |
7921925c JB |
692 | \f |
693 | /* Getting and setting values of symbols */ | |
694 | ||
695 | /* Given the raw contents of a symbol value cell, | |
696 | return the Lisp value of the symbol. | |
697 | This does not handle buffer-local variables; use | |
698 | swap_in_symval_forwarding for that. */ | |
699 | ||
700 | Lisp_Object | |
701 | do_symval_forwarding (valcontents) | |
702 | register Lisp_Object valcontents; | |
703 | { | |
704 | register Lisp_Object val; | |
46b2ac21 KH |
705 | int offset; |
706 | if (MISCP (valcontents)) | |
324a6eef | 707 | switch (XMISCTYPE (valcontents)) |
46b2ac21 KH |
708 | { |
709 | case Lisp_Misc_Intfwd: | |
710 | XSETINT (val, *XINTFWD (valcontents)->intvar); | |
711 | return val; | |
7921925c | 712 | |
46b2ac21 KH |
713 | case Lisp_Misc_Boolfwd: |
714 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); | |
7921925c | 715 | |
46b2ac21 KH |
716 | case Lisp_Misc_Objfwd: |
717 | return *XOBJFWD (valcontents)->objvar; | |
7921925c | 718 | |
46b2ac21 KH |
719 | case Lisp_Misc_Buffer_Objfwd: |
720 | offset = XBUFFER_OBJFWD (valcontents)->offset; | |
721 | return *(Lisp_Object *)(offset + (char *)current_buffer); | |
7403b5c8 | 722 | |
e5f8af9e KH |
723 | case Lisp_Misc_Kboard_Objfwd: |
724 | offset = XKBOARD_OBJFWD (valcontents)->offset; | |
725 | return *(Lisp_Object *)(offset + (char *)current_kboard); | |
46b2ac21 | 726 | } |
7921925c JB |
727 | return valcontents; |
728 | } | |
729 | ||
d9c2a0f2 EN |
730 | /* Store NEWVAL into SYMBOL, where VALCONTENTS is found in the value cell |
731 | of SYMBOL. If SYMBOL is buffer-local, VALCONTENTS should be the | |
7921925c JB |
732 | buffer-independent contents of the value cell: forwarded just one |
733 | step past the buffer-localness. */ | |
734 | ||
735 | void | |
d9c2a0f2 EN |
736 | store_symval_forwarding (symbol, valcontents, newval) |
737 | Lisp_Object symbol; | |
7921925c JB |
738 | register Lisp_Object valcontents, newval; |
739 | { | |
0220c518 | 740 | switch (SWITCH_ENUM_CAST (XTYPE (valcontents))) |
7921925c | 741 | { |
46b2ac21 | 742 | case Lisp_Misc: |
324a6eef | 743 | switch (XMISCTYPE (valcontents)) |
46b2ac21 KH |
744 | { |
745 | case Lisp_Misc_Intfwd: | |
746 | CHECK_NUMBER (newval, 1); | |
747 | *XINTFWD (valcontents)->intvar = XINT (newval); | |
e6c82a8d RS |
748 | if (*XINTFWD (valcontents)->intvar != XINT (newval)) |
749 | error ("Value out of range for variable `%s'", | |
d9c2a0f2 | 750 | XSYMBOL (symbol)->name->data); |
46b2ac21 KH |
751 | break; |
752 | ||
753 | case Lisp_Misc_Boolfwd: | |
754 | *XBOOLFWD (valcontents)->boolvar = NILP (newval) ? 0 : 1; | |
755 | break; | |
756 | ||
757 | case Lisp_Misc_Objfwd: | |
758 | *XOBJFWD (valcontents)->objvar = newval; | |
759 | break; | |
760 | ||
761 | case Lisp_Misc_Buffer_Objfwd: | |
762 | { | |
763 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
764 | Lisp_Object type; | |
765 | ||
766 | type = *(Lisp_Object *)(offset + (char *)&buffer_local_types); | |
767 | if (! NILP (type) && ! NILP (newval) | |
768 | && XTYPE (newval) != XINT (type)) | |
769 | buffer_slot_type_mismatch (offset); | |
770 | ||
771 | *(Lisp_Object *)(offset + (char *)current_buffer) = newval; | |
46b2ac21 | 772 | } |
7403b5c8 KH |
773 | break; |
774 | ||
e5f8af9e KH |
775 | case Lisp_Misc_Kboard_Objfwd: |
776 | (*(Lisp_Object *)((char *)current_kboard | |
777 | + XKBOARD_OBJFWD (valcontents)->offset)) | |
7403b5c8 KH |
778 | = newval; |
779 | break; | |
780 | ||
46b2ac21 KH |
781 | default: |
782 | goto def; | |
783 | } | |
7921925c JB |
784 | break; |
785 | ||
7921925c | 786 | default: |
46b2ac21 | 787 | def: |
d9c2a0f2 | 788 | valcontents = XSYMBOL (symbol)->value; |
e9ebc175 KH |
789 | if (BUFFER_LOCAL_VALUEP (valcontents) |
790 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
8d4afcac | 791 | XBUFFER_LOCAL_VALUE (valcontents)->car = newval; |
7921925c | 792 | else |
d9c2a0f2 | 793 | XSYMBOL (symbol)->value = newval; |
7921925c JB |
794 | } |
795 | } | |
796 | ||
d9c2a0f2 | 797 | /* Set up the buffer-local symbol SYMBOL for validity in the current |
7921925c JB |
798 | buffer. VALCONTENTS is the contents of its value cell. |
799 | Return the value forwarded one step past the buffer-local indicator. */ | |
800 | ||
801 | static Lisp_Object | |
d9c2a0f2 EN |
802 | swap_in_symval_forwarding (symbol, valcontents) |
803 | Lisp_Object symbol, valcontents; | |
7921925c | 804 | { |
7403b5c8 | 805 | /* valcontents is a pointer to a struct resembling the cons |
7921925c | 806 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE)). |
7403b5c8 | 807 | |
7921925c | 808 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's |
533984a8 JB |
809 | local_var_alist, that being the element whose car is this |
810 | variable. Or it can be a pointer to the | |
811 | (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER does not have | |
812 | an element in its alist for this variable. | |
813 | ||
814 | If the current buffer is not BUFFER, we store the current | |
815 | REALVALUE value into CURRENT-ALIST-ELEMENT, then find the | |
816 | appropriate alist element for the buffer now current and set up | |
817 | CURRENT-ALIST-ELEMENT. Then we set REALVALUE out of that | |
818 | element, and store into BUFFER. | |
819 | ||
7921925c JB |
820 | Note that REALVALUE can be a forwarding pointer. */ |
821 | ||
822 | register Lisp_Object tem1; | |
8d4afcac | 823 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; |
7921925c | 824 | |
a33ef3ab | 825 | if (NILP (tem1) || current_buffer != XBUFFER (tem1)) |
7921925c | 826 | { |
8d4afcac KH |
827 | tem1 = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
828 | Fsetcdr (tem1, | |
829 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car)); | |
d9c2a0f2 | 830 | tem1 = assq_no_quit (symbol, current_buffer->local_var_alist); |
a33ef3ab | 831 | if (NILP (tem1)) |
8d4afcac KH |
832 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr; |
833 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car = tem1; | |
834 | XSETBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car, | |
835 | current_buffer); | |
d9c2a0f2 | 836 | store_symval_forwarding (symbol, XBUFFER_LOCAL_VALUE (valcontents)->car, |
8d4afcac | 837 | Fcdr (tem1)); |
7921925c | 838 | } |
8d4afcac | 839 | return XBUFFER_LOCAL_VALUE (valcontents)->car; |
7921925c JB |
840 | } |
841 | \f | |
14e76af9 JB |
842 | /* Find the value of a symbol, returning Qunbound if it's not bound. |
843 | This is helpful for code which just wants to get a variable's value | |
8e6208c5 | 844 | if it has one, without signaling an error. |
14e76af9 JB |
845 | Note that it must not be possible to quit |
846 | within this function. Great care is required for this. */ | |
7921925c | 847 | |
14e76af9 | 848 | Lisp_Object |
d9c2a0f2 EN |
849 | find_symbol_value (symbol) |
850 | Lisp_Object symbol; | |
7921925c JB |
851 | { |
852 | register Lisp_Object valcontents, tem1; | |
853 | register Lisp_Object val; | |
d9c2a0f2 EN |
854 | CHECK_SYMBOL (symbol, 0); |
855 | valcontents = XSYMBOL (symbol)->value; | |
7921925c | 856 | |
aabf6bec KH |
857 | if (BUFFER_LOCAL_VALUEP (valcontents) |
858 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 859 | valcontents = swap_in_symval_forwarding (symbol, valcontents); |
7921925c | 860 | |
536b772a KH |
861 | if (MISCP (valcontents)) |
862 | { | |
324a6eef | 863 | switch (XMISCTYPE (valcontents)) |
46b2ac21 KH |
864 | { |
865 | case Lisp_Misc_Intfwd: | |
866 | XSETINT (val, *XINTFWD (valcontents)->intvar); | |
867 | return val; | |
7921925c | 868 | |
46b2ac21 KH |
869 | case Lisp_Misc_Boolfwd: |
870 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); | |
7921925c | 871 | |
46b2ac21 KH |
872 | case Lisp_Misc_Objfwd: |
873 | return *XOBJFWD (valcontents)->objvar; | |
7921925c | 874 | |
46b2ac21 KH |
875 | case Lisp_Misc_Buffer_Objfwd: |
876 | return *(Lisp_Object *)(XBUFFER_OBJFWD (valcontents)->offset | |
877 | + (char *)current_buffer); | |
7403b5c8 | 878 | |
e5f8af9e KH |
879 | case Lisp_Misc_Kboard_Objfwd: |
880 | return *(Lisp_Object *)(XKBOARD_OBJFWD (valcontents)->offset | |
881 | + (char *)current_kboard); | |
46b2ac21 | 882 | } |
7921925c JB |
883 | } |
884 | ||
885 | return valcontents; | |
886 | } | |
887 | ||
14e76af9 JB |
888 | DEFUN ("symbol-value", Fsymbol_value, Ssymbol_value, 1, 1, 0, |
889 | "Return SYMBOL's value. Error if that is void.") | |
d9c2a0f2 EN |
890 | (symbol) |
891 | Lisp_Object symbol; | |
14e76af9 | 892 | { |
0671d7c0 | 893 | Lisp_Object val; |
14e76af9 | 894 | |
d9c2a0f2 | 895 | val = find_symbol_value (symbol); |
14e76af9 | 896 | if (EQ (val, Qunbound)) |
d9c2a0f2 | 897 | return Fsignal (Qvoid_variable, Fcons (symbol, Qnil)); |
14e76af9 JB |
898 | else |
899 | return val; | |
900 | } | |
901 | ||
7921925c JB |
902 | DEFUN ("set", Fset, Sset, 2, 2, 0, |
903 | "Set SYMBOL's value to NEWVAL, and return NEWVAL.") | |
d9c2a0f2 EN |
904 | (symbol, newval) |
905 | register Lisp_Object symbol, newval; | |
05ef7169 RS |
906 | { |
907 | return set_internal (symbol, newval, 0); | |
908 | } | |
909 | ||
910 | /* Stpre the value NEWVAL into SYMBOL. | |
911 | If BINDFLAG is zero, then if this symbol is supposed to become | |
912 | local in every buffer where it is set, then we make it local. | |
913 | If BINDFLAG is nonzero, we don't do that. */ | |
914 | ||
915 | Lisp_Object | |
916 | set_internal (symbol, newval, bindflag) | |
917 | register Lisp_Object symbol, newval; | |
918 | int bindflag; | |
7921925c | 919 | { |
1bfcade3 | 920 | int voide = EQ (newval, Qunbound); |
7921925c | 921 | |
7921925c | 922 | register Lisp_Object valcontents, tem1, current_alist_element; |
7921925c | 923 | |
d9c2a0f2 EN |
924 | CHECK_SYMBOL (symbol, 0); |
925 | if (NILP (symbol) || EQ (symbol, Qt)) | |
926 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
927 | valcontents = XSYMBOL (symbol)->value; | |
7921925c | 928 | |
e9ebc175 | 929 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 930 | { |
46b2ac21 | 931 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
865c050f KH |
932 | register int mask = XINT (*((Lisp_Object *) |
933 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
934 | if (mask > 0) |
935 | current_buffer->local_var_flags |= mask; | |
936 | } | |
937 | ||
e9ebc175 KH |
938 | else if (BUFFER_LOCAL_VALUEP (valcontents) |
939 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c | 940 | { |
8d4afcac KH |
941 | /* valcontents is actually a pointer to a struct resembling a cons, |
942 | with contents something like: | |
d8cafeb5 JB |
943 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE). |
944 | ||
945 | BUFFER is the last buffer for which this symbol's value was | |
946 | made up to date. | |
947 | ||
948 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's | |
949 | local_var_alist, that being the element whose car is this | |
950 | variable. Or it can be a pointer to the | |
951 | (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER does not | |
952 | have an element in its alist for this variable (that is, if | |
953 | BUFFER sees the default value of this variable). | |
954 | ||
955 | If we want to examine or set the value and BUFFER is current, | |
956 | we just examine or set REALVALUE. If BUFFER is not current, we | |
957 | store the current REALVALUE value into CURRENT-ALIST-ELEMENT, | |
958 | then find the appropriate alist element for the buffer now | |
959 | current and set up CURRENT-ALIST-ELEMENT. Then we set | |
960 | REALVALUE out of that element, and store into BUFFER. | |
961 | ||
962 | If we are setting the variable and the current buffer does | |
963 | not have an alist entry for this variable, an alist entry is | |
964 | created. | |
965 | ||
966 | Note that REALVALUE can be a forwarding pointer. Each time | |
967 | it is examined or set, forwarding must be done. */ | |
968 | ||
969 | /* What value are we caching right now? */ | |
970 | current_alist_element = | |
8d4afcac | 971 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
d8cafeb5 JB |
972 | |
973 | /* If the current buffer is not the buffer whose binding is | |
974 | currently cached, or if it's a Lisp_Buffer_Local_Value and | |
975 | we're looking at the default value, the cache is invalid; we | |
976 | need to write it out, and find the new CURRENT-ALIST-ELEMENT. */ | |
977 | if ((current_buffer | |
8d4afcac | 978 | != XBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car)) |
e9ebc175 | 979 | || (BUFFER_LOCAL_VALUEP (valcontents) |
b06faa91 JB |
980 | && EQ (XCONS (current_alist_element)->car, |
981 | current_alist_element))) | |
7921925c | 982 | { |
d8cafeb5 JB |
983 | /* Write out the cached value for the old buffer; copy it |
984 | back to its alist element. This works if the current | |
985 | buffer only sees the default value, too. */ | |
986 | Fsetcdr (current_alist_element, | |
8d4afcac | 987 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car)); |
7921925c | 988 | |
d8cafeb5 | 989 | /* Find the new value for CURRENT-ALIST-ELEMENT. */ |
d9c2a0f2 | 990 | tem1 = Fassq (symbol, current_buffer->local_var_alist); |
a33ef3ab | 991 | if (NILP (tem1)) |
d8cafeb5 JB |
992 | { |
993 | /* This buffer still sees the default value. */ | |
994 | ||
995 | /* If the variable is a Lisp_Some_Buffer_Local_Value, | |
05ef7169 | 996 | or if this is `let' rather than `set', |
d8cafeb5 JB |
997 | make CURRENT-ALIST-ELEMENT point to itself, |
998 | indicating that we're seeing the default value. */ | |
05ef7169 | 999 | if (bindflag || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
8d4afcac | 1000 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr; |
d8cafeb5 | 1001 | |
05ef7169 RS |
1002 | /* If it's a Lisp_Buffer_Local_Value, being set not bound, |
1003 | give this buffer a new assoc for a local value and set | |
d8cafeb5 JB |
1004 | CURRENT-ALIST-ELEMENT to point to that. */ |
1005 | else | |
1006 | { | |
d9c2a0f2 | 1007 | tem1 = Fcons (symbol, Fcdr (current_alist_element)); |
d8cafeb5 JB |
1008 | current_buffer->local_var_alist = |
1009 | Fcons (tem1, current_buffer->local_var_alist); | |
1010 | } | |
1011 | } | |
1012 | /* Cache the new buffer's assoc in CURRENT-ALIST-ELEMENT. */ | |
8d4afcac KH |
1013 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car |
1014 | = tem1; | |
d8cafeb5 JB |
1015 | |
1016 | /* Set BUFFER, now that CURRENT-ALIST-ELEMENT is accurate. */ | |
8d4afcac KH |
1017 | XSETBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car, |
1018 | current_buffer); | |
7921925c | 1019 | } |
8d4afcac | 1020 | valcontents = XBUFFER_LOCAL_VALUE (valcontents)->car; |
7921925c | 1021 | } |
d8cafeb5 | 1022 | |
7921925c JB |
1023 | /* If storing void (making the symbol void), forward only through |
1024 | buffer-local indicator, not through Lisp_Objfwd, etc. */ | |
1025 | if (voide) | |
d9c2a0f2 | 1026 | store_symval_forwarding (symbol, Qnil, newval); |
7921925c | 1027 | else |
d9c2a0f2 | 1028 | store_symval_forwarding (symbol, valcontents, newval); |
d8cafeb5 | 1029 | |
7921925c JB |
1030 | return newval; |
1031 | } | |
1032 | \f | |
1033 | /* Access or set a buffer-local symbol's default value. */ | |
1034 | ||
d9c2a0f2 | 1035 | /* Return the default value of SYMBOL, but don't check for voidness. |
1bfcade3 | 1036 | Return Qunbound if it is void. */ |
7921925c JB |
1037 | |
1038 | Lisp_Object | |
d9c2a0f2 EN |
1039 | default_value (symbol) |
1040 | Lisp_Object symbol; | |
7921925c JB |
1041 | { |
1042 | register Lisp_Object valcontents; | |
1043 | ||
d9c2a0f2 EN |
1044 | CHECK_SYMBOL (symbol, 0); |
1045 | valcontents = XSYMBOL (symbol)->value; | |
7921925c JB |
1046 | |
1047 | /* For a built-in buffer-local variable, get the default value | |
1048 | rather than letting do_symval_forwarding get the current value. */ | |
e9ebc175 | 1049 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1050 | { |
46b2ac21 | 1051 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
7921925c | 1052 | |
865c050f | 1053 | if (XINT (*(Lisp_Object *) (idx + (char *) &buffer_local_flags)) != 0) |
7921925c JB |
1054 | return *(Lisp_Object *)(idx + (char *) &buffer_defaults); |
1055 | } | |
1056 | ||
1057 | /* Handle user-created local variables. */ | |
e9ebc175 KH |
1058 | if (BUFFER_LOCAL_VALUEP (valcontents) |
1059 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c JB |
1060 | { |
1061 | /* If var is set up for a buffer that lacks a local value for it, | |
1062 | the current value is nominally the default value. | |
1063 | But the current value slot may be more up to date, since | |
1064 | ordinary setq stores just that slot. So use that. */ | |
1065 | Lisp_Object current_alist_element, alist_element_car; | |
1066 | current_alist_element | |
8d4afcac | 1067 | = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
7921925c JB |
1068 | alist_element_car = XCONS (current_alist_element)->car; |
1069 | if (EQ (alist_element_car, current_alist_element)) | |
8d4afcac | 1070 | return do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car); |
7921925c | 1071 | else |
8d4afcac | 1072 | return XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->cdr; |
7921925c JB |
1073 | } |
1074 | /* For other variables, get the current value. */ | |
1075 | return do_symval_forwarding (valcontents); | |
1076 | } | |
1077 | ||
1078 | DEFUN ("default-boundp", Fdefault_boundp, Sdefault_boundp, 1, 1, 0, | |
1079 | "Return T if SYMBOL has a non-void default value.\n\ | |
1080 | This is the value that is seen in buffers that do not have their own values\n\ | |
1081 | for this variable.") | |
d9c2a0f2 EN |
1082 | (symbol) |
1083 | Lisp_Object symbol; | |
7921925c JB |
1084 | { |
1085 | register Lisp_Object value; | |
1086 | ||
d9c2a0f2 | 1087 | value = default_value (symbol); |
1bfcade3 | 1088 | return (EQ (value, Qunbound) ? Qnil : Qt); |
7921925c JB |
1089 | } |
1090 | ||
1091 | DEFUN ("default-value", Fdefault_value, Sdefault_value, 1, 1, 0, | |
1092 | "Return SYMBOL's default value.\n\ | |
1093 | This is the value that is seen in buffers that do not have their own values\n\ | |
1094 | for this variable. The default value is meaningful for variables with\n\ | |
1095 | local bindings in certain buffers.") | |
d9c2a0f2 EN |
1096 | (symbol) |
1097 | Lisp_Object symbol; | |
7921925c JB |
1098 | { |
1099 | register Lisp_Object value; | |
1100 | ||
d9c2a0f2 | 1101 | value = default_value (symbol); |
1bfcade3 | 1102 | if (EQ (value, Qunbound)) |
d9c2a0f2 | 1103 | return Fsignal (Qvoid_variable, Fcons (symbol, Qnil)); |
7921925c JB |
1104 | return value; |
1105 | } | |
1106 | ||
1107 | DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0, | |
1108 | "Set SYMBOL's default value to VAL. SYMBOL and VAL are evaluated.\n\ | |
1109 | The default value is seen in buffers that do not have their own values\n\ | |
1110 | for this variable.") | |
d9c2a0f2 EN |
1111 | (symbol, value) |
1112 | Lisp_Object symbol, value; | |
7921925c JB |
1113 | { |
1114 | register Lisp_Object valcontents, current_alist_element, alist_element_buffer; | |
1115 | ||
d9c2a0f2 EN |
1116 | CHECK_SYMBOL (symbol, 0); |
1117 | valcontents = XSYMBOL (symbol)->value; | |
7921925c JB |
1118 | |
1119 | /* Handle variables like case-fold-search that have special slots | |
1120 | in the buffer. Make them work apparently like Lisp_Buffer_Local_Value | |
1121 | variables. */ | |
e9ebc175 | 1122 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1123 | { |
46b2ac21 | 1124 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
7921925c | 1125 | register struct buffer *b; |
865c050f KH |
1126 | register int mask = XINT (*((Lisp_Object *) |
1127 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
1128 | |
1129 | if (mask > 0) | |
1130 | { | |
1131 | *(Lisp_Object *)(idx + (char *) &buffer_defaults) = value; | |
1132 | for (b = all_buffers; b; b = b->next) | |
1133 | if (!(b->local_var_flags & mask)) | |
1134 | *(Lisp_Object *)(idx + (char *) b) = value; | |
1135 | } | |
1136 | return value; | |
1137 | } | |
1138 | ||
e9ebc175 KH |
1139 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
1140 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 1141 | return Fset (symbol, value); |
7921925c JB |
1142 | |
1143 | /* Store new value into the DEFAULT-VALUE slot */ | |
8d4afcac | 1144 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->cdr = value; |
7921925c JB |
1145 | |
1146 | /* If that slot is current, we must set the REALVALUE slot too */ | |
8d4afcac KH |
1147 | current_alist_element |
1148 | = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; | |
7921925c JB |
1149 | alist_element_buffer = Fcar (current_alist_element); |
1150 | if (EQ (alist_element_buffer, current_alist_element)) | |
d9c2a0f2 | 1151 | store_symval_forwarding (symbol, XBUFFER_LOCAL_VALUE (valcontents)->car, |
8d4afcac | 1152 | value); |
7921925c JB |
1153 | |
1154 | return value; | |
1155 | } | |
1156 | ||
1157 | DEFUN ("setq-default", Fsetq_default, Ssetq_default, 2, UNEVALLED, 0, | |
0412bf67 RS |
1158 | "Set the default value of variable VAR to VALUE.\n\ |
1159 | VAR, the variable name, is literal (not evaluated);\n\ | |
1160 | VALUE is an expression and it is evaluated.\n\ | |
1161 | The default value of a variable is seen in buffers\n\ | |
1162 | that do not have their own values for the variable.\n\ | |
1163 | \n\ | |
1164 | More generally, you can use multiple variables and values, as in\n\ | |
d9c2a0f2 EN |
1165 | (setq-default SYMBOL VALUE SYMBOL VALUE...)\n\ |
1166 | This sets each SYMBOL's default value to the corresponding VALUE.\n\ | |
1167 | The VALUE for the Nth SYMBOL can refer to the new default values\n\ | |
0412bf67 | 1168 | of previous SYMs.") |
7921925c JB |
1169 | (args) |
1170 | Lisp_Object args; | |
1171 | { | |
1172 | register Lisp_Object args_left; | |
d9c2a0f2 | 1173 | register Lisp_Object val, symbol; |
7921925c JB |
1174 | struct gcpro gcpro1; |
1175 | ||
a33ef3ab | 1176 | if (NILP (args)) |
7921925c JB |
1177 | return Qnil; |
1178 | ||
1179 | args_left = args; | |
1180 | GCPRO1 (args); | |
1181 | ||
1182 | do | |
1183 | { | |
1184 | val = Feval (Fcar (Fcdr (args_left))); | |
d9c2a0f2 EN |
1185 | symbol = Fcar (args_left); |
1186 | Fset_default (symbol, val); | |
7921925c JB |
1187 | args_left = Fcdr (Fcdr (args_left)); |
1188 | } | |
a33ef3ab | 1189 | while (!NILP (args_left)); |
7921925c JB |
1190 | |
1191 | UNGCPRO; | |
1192 | return val; | |
1193 | } | |
1194 | \f | |
a5ca2b75 JB |
1195 | /* Lisp functions for creating and removing buffer-local variables. */ |
1196 | ||
7921925c JB |
1197 | DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local, Smake_variable_buffer_local, |
1198 | 1, 1, "vMake Variable Buffer Local: ", | |
1199 | "Make VARIABLE have a separate value for each buffer.\n\ | |
1200 | At any time, the value for the current buffer is in effect.\n\ | |
1201 | There is also a default value which is seen in any buffer which has not yet\n\ | |
1202 | set its own value.\n\ | |
1203 | Using `set' or `setq' to set the variable causes it to have a separate value\n\ | |
1204 | for the current buffer if it was previously using the default value.\n\ | |
1205 | The function `default-value' gets the default value and `set-default' sets it.") | |
d9c2a0f2 EN |
1206 | (variable) |
1207 | register Lisp_Object variable; | |
7921925c | 1208 | { |
8d4afcac | 1209 | register Lisp_Object tem, valcontents, newval; |
7921925c | 1210 | |
d9c2a0f2 | 1211 | CHECK_SYMBOL (variable, 0); |
7921925c | 1212 | |
d9c2a0f2 EN |
1213 | valcontents = XSYMBOL (variable)->value; |
1214 | if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents)) | |
1215 | error ("Symbol %s may not be buffer-local", XSYMBOL (variable)->name->data); | |
7921925c | 1216 | |
e9ebc175 | 1217 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
d9c2a0f2 | 1218 | return variable; |
e9ebc175 | 1219 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
7921925c | 1220 | { |
d9c2a0f2 EN |
1221 | XMISCTYPE (XSYMBOL (variable)->value) = Lisp_Misc_Buffer_Local_Value; |
1222 | return variable; | |
7921925c JB |
1223 | } |
1224 | if (EQ (valcontents, Qunbound)) | |
d9c2a0f2 EN |
1225 | XSYMBOL (variable)->value = Qnil; |
1226 | tem = Fcons (Qnil, Fsymbol_value (variable)); | |
7921925c | 1227 | XCONS (tem)->car = tem; |
8d4afcac | 1228 | newval = allocate_misc (); |
324a6eef | 1229 | XMISCTYPE (newval) = Lisp_Misc_Buffer_Local_Value; |
d9c2a0f2 | 1230 | XBUFFER_LOCAL_VALUE (newval)->car = XSYMBOL (variable)->value; |
8d4afcac | 1231 | XBUFFER_LOCAL_VALUE (newval)->cdr = Fcons (Fcurrent_buffer (), tem); |
d9c2a0f2 EN |
1232 | XSYMBOL (variable)->value = newval; |
1233 | return variable; | |
7921925c JB |
1234 | } |
1235 | ||
1236 | DEFUN ("make-local-variable", Fmake_local_variable, Smake_local_variable, | |
1237 | 1, 1, "vMake Local Variable: ", | |
1238 | "Make VARIABLE have a separate value in the current buffer.\n\ | |
1239 | Other buffers will continue to share a common default value.\n\ | |
a782f0d5 RS |
1240 | \(The buffer-local value of VARIABLE starts out as the same value\n\ |
1241 | VARIABLE previously had. If VARIABLE was void, it remains void.\)\n\ | |
7921925c JB |
1242 | See also `make-variable-buffer-local'.\n\n\ |
1243 | If the variable is already arranged to become local when set,\n\ | |
1244 | this function causes a local value to exist for this buffer,\n\ | |
62476adc RS |
1245 | just as setting the variable would do.\n\ |
1246 | \n\ | |
1247 | Do not use `make-local-variable' to make a hook variable buffer-local.\n\ | |
1248 | Use `make-local-hook' instead.") | |
d9c2a0f2 EN |
1249 | (variable) |
1250 | register Lisp_Object variable; | |
7921925c JB |
1251 | { |
1252 | register Lisp_Object tem, valcontents; | |
1253 | ||
d9c2a0f2 | 1254 | CHECK_SYMBOL (variable, 0); |
7921925c | 1255 | |
d9c2a0f2 EN |
1256 | valcontents = XSYMBOL (variable)->value; |
1257 | if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents)) | |
1258 | error ("Symbol %s may not be buffer-local", XSYMBOL (variable)->name->data); | |
7921925c | 1259 | |
e9ebc175 | 1260 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
7921925c | 1261 | { |
d9c2a0f2 | 1262 | tem = Fboundp (variable); |
7403b5c8 | 1263 | |
7921925c JB |
1264 | /* Make sure the symbol has a local value in this particular buffer, |
1265 | by setting it to the same value it already has. */ | |
d9c2a0f2 EN |
1266 | Fset (variable, (EQ (tem, Qt) ? Fsymbol_value (variable) : Qunbound)); |
1267 | return variable; | |
7921925c | 1268 | } |
d9c2a0f2 | 1269 | /* Make sure symbol is set up to hold per-buffer values */ |
e9ebc175 | 1270 | if (!SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
7921925c | 1271 | { |
8d4afcac | 1272 | Lisp_Object newval; |
7921925c JB |
1273 | tem = Fcons (Qnil, do_symval_forwarding (valcontents)); |
1274 | XCONS (tem)->car = tem; | |
8d4afcac | 1275 | newval = allocate_misc (); |
324a6eef | 1276 | XMISCTYPE (newval) = Lisp_Misc_Some_Buffer_Local_Value; |
d9c2a0f2 | 1277 | XBUFFER_LOCAL_VALUE (newval)->car = XSYMBOL (variable)->value; |
8d4afcac | 1278 | XBUFFER_LOCAL_VALUE (newval)->cdr = Fcons (Qnil, tem); |
d9c2a0f2 | 1279 | XSYMBOL (variable)->value = newval; |
7921925c | 1280 | } |
d9c2a0f2 EN |
1281 | /* Make sure this buffer has its own value of symbol */ |
1282 | tem = Fassq (variable, current_buffer->local_var_alist); | |
a33ef3ab | 1283 | if (NILP (tem)) |
7921925c | 1284 | { |
a5d004a1 RS |
1285 | /* Swap out any local binding for some other buffer, and make |
1286 | sure the current value is permanently recorded, if it's the | |
1287 | default value. */ | |
d9c2a0f2 | 1288 | find_symbol_value (variable); |
a5d004a1 | 1289 | |
7921925c | 1290 | current_buffer->local_var_alist |
d9c2a0f2 | 1291 | = Fcons (Fcons (variable, XCONS (XCONS (XBUFFER_LOCAL_VALUE (XSYMBOL (variable)->value)->cdr)->cdr)->cdr), |
7921925c JB |
1292 | current_buffer->local_var_alist); |
1293 | ||
1294 | /* Make sure symbol does not think it is set up for this buffer; | |
1295 | force it to look once again for this buffer's value */ | |
1296 | { | |
8d4afcac | 1297 | Lisp_Object *pvalbuf; |
a5d004a1 | 1298 | |
d9c2a0f2 | 1299 | valcontents = XSYMBOL (variable)->value; |
a5d004a1 | 1300 | |
8d4afcac KH |
1301 | pvalbuf = &XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; |
1302 | if (current_buffer == XBUFFER (*pvalbuf)) | |
1303 | *pvalbuf = Qnil; | |
7921925c | 1304 | } |
7921925c | 1305 | } |
a5ca2b75 JB |
1306 | |
1307 | /* If the symbol forwards into a C variable, then swap in the | |
1308 | variable for this buffer immediately. If C code modifies the | |
1309 | variable before we swap in, then that new value will clobber the | |
1310 | default value the next time we swap. */ | |
d9c2a0f2 | 1311 | valcontents = XBUFFER_LOCAL_VALUE (XSYMBOL (variable)->value)->car; |
e9ebc175 | 1312 | if (INTFWDP (valcontents) || BOOLFWDP (valcontents) || OBJFWDP (valcontents)) |
d9c2a0f2 | 1313 | swap_in_symval_forwarding (variable, XSYMBOL (variable)->value); |
a5ca2b75 | 1314 | |
d9c2a0f2 | 1315 | return variable; |
7921925c JB |
1316 | } |
1317 | ||
1318 | DEFUN ("kill-local-variable", Fkill_local_variable, Skill_local_variable, | |
1319 | 1, 1, "vKill Local Variable: ", | |
1320 | "Make VARIABLE no longer have a separate value in the current buffer.\n\ | |
1321 | From now on the default value will apply in this buffer.") | |
d9c2a0f2 EN |
1322 | (variable) |
1323 | register Lisp_Object variable; | |
7921925c JB |
1324 | { |
1325 | register Lisp_Object tem, valcontents; | |
1326 | ||
d9c2a0f2 | 1327 | CHECK_SYMBOL (variable, 0); |
7921925c | 1328 | |
d9c2a0f2 | 1329 | valcontents = XSYMBOL (variable)->value; |
7921925c | 1330 | |
e9ebc175 | 1331 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1332 | { |
46b2ac21 | 1333 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
865c050f KH |
1334 | register int mask = XINT (*((Lisp_Object*) |
1335 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
1336 | |
1337 | if (mask > 0) | |
1338 | { | |
1339 | *(Lisp_Object *)(idx + (char *) current_buffer) | |
1340 | = *(Lisp_Object *)(idx + (char *) &buffer_defaults); | |
1341 | current_buffer->local_var_flags &= ~mask; | |
1342 | } | |
d9c2a0f2 | 1343 | return variable; |
7921925c JB |
1344 | } |
1345 | ||
e9ebc175 KH |
1346 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
1347 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 1348 | return variable; |
7921925c JB |
1349 | |
1350 | /* Get rid of this buffer's alist element, if any */ | |
1351 | ||
d9c2a0f2 | 1352 | tem = Fassq (variable, current_buffer->local_var_alist); |
a33ef3ab | 1353 | if (!NILP (tem)) |
8d4afcac KH |
1354 | current_buffer->local_var_alist |
1355 | = Fdelq (tem, current_buffer->local_var_alist); | |
7921925c | 1356 | |
79c83e03 KH |
1357 | /* If the symbol is set up for the current buffer, recompute its |
1358 | value. We have to do it now, or else forwarded objects won't | |
1359 | work right. */ | |
7921925c | 1360 | { |
8d4afcac | 1361 | Lisp_Object *pvalbuf; |
d9c2a0f2 | 1362 | valcontents = XSYMBOL (variable)->value; |
8d4afcac KH |
1363 | pvalbuf = &XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; |
1364 | if (current_buffer == XBUFFER (*pvalbuf)) | |
79c83e03 KH |
1365 | { |
1366 | *pvalbuf = Qnil; | |
978dd578 | 1367 | find_symbol_value (variable); |
79c83e03 | 1368 | } |
7921925c JB |
1369 | } |
1370 | ||
d9c2a0f2 | 1371 | return variable; |
7921925c | 1372 | } |
62476adc RS |
1373 | |
1374 | DEFUN ("local-variable-p", Flocal_variable_p, Slocal_variable_p, | |
c48ead86 KH |
1375 | 1, 2, 0, |
1376 | "Non-nil if VARIABLE has a local binding in buffer BUFFER.\n\ | |
1377 | BUFFER defaults to the current buffer.") | |
d9c2a0f2 EN |
1378 | (variable, buffer) |
1379 | register Lisp_Object variable, buffer; | |
62476adc RS |
1380 | { |
1381 | Lisp_Object valcontents; | |
c48ead86 KH |
1382 | register struct buffer *buf; |
1383 | ||
1384 | if (NILP (buffer)) | |
1385 | buf = current_buffer; | |
1386 | else | |
1387 | { | |
1388 | CHECK_BUFFER (buffer, 0); | |
1389 | buf = XBUFFER (buffer); | |
1390 | } | |
62476adc | 1391 | |
d9c2a0f2 | 1392 | CHECK_SYMBOL (variable, 0); |
62476adc | 1393 | |
d9c2a0f2 | 1394 | valcontents = XSYMBOL (variable)->value; |
c48ead86 | 1395 | if (BUFFER_LOCAL_VALUEP (valcontents) |
1e5f16fa | 1396 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
c48ead86 KH |
1397 | { |
1398 | Lisp_Object tail, elt; | |
1399 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1400 | { | |
1401 | elt = XCONS (tail)->car; | |
d9c2a0f2 | 1402 | if (EQ (variable, XCONS (elt)->car)) |
c48ead86 KH |
1403 | return Qt; |
1404 | } | |
1405 | } | |
1406 | if (BUFFER_OBJFWDP (valcontents)) | |
1407 | { | |
1408 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
1409 | int mask = XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)); | |
1410 | if (mask == -1 || (buf->local_var_flags & mask)) | |
1411 | return Qt; | |
1412 | } | |
1413 | return Qnil; | |
62476adc | 1414 | } |
f4f04cee RS |
1415 | |
1416 | DEFUN ("local-variable-if-set-p", Flocal_variable_if_set_p, Slocal_variable_if_set_p, | |
1417 | 1, 2, 0, | |
1418 | "Non-nil if VARIABLE will be local in buffer BUFFER if it is set there.\n\ | |
1419 | BUFFER defaults to the current buffer.") | |
d9c2a0f2 EN |
1420 | (variable, buffer) |
1421 | register Lisp_Object variable, buffer; | |
f4f04cee RS |
1422 | { |
1423 | Lisp_Object valcontents; | |
1424 | register struct buffer *buf; | |
1425 | ||
1426 | if (NILP (buffer)) | |
1427 | buf = current_buffer; | |
1428 | else | |
1429 | { | |
1430 | CHECK_BUFFER (buffer, 0); | |
1431 | buf = XBUFFER (buffer); | |
1432 | } | |
1433 | ||
d9c2a0f2 | 1434 | CHECK_SYMBOL (variable, 0); |
f4f04cee | 1435 | |
d9c2a0f2 | 1436 | valcontents = XSYMBOL (variable)->value; |
f4f04cee RS |
1437 | |
1438 | /* This means that make-variable-buffer-local was done. */ | |
1439 | if (BUFFER_LOCAL_VALUEP (valcontents)) | |
1440 | return Qt; | |
1441 | /* All these slots become local if they are set. */ | |
1442 | if (BUFFER_OBJFWDP (valcontents)) | |
1443 | return Qt; | |
1444 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
1445 | { | |
1446 | Lisp_Object tail, elt; | |
1447 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1448 | { | |
1449 | elt = XCONS (tail)->car; | |
d9c2a0f2 | 1450 | if (EQ (variable, XCONS (elt)->car)) |
f4f04cee RS |
1451 | return Qt; |
1452 | } | |
1453 | } | |
1454 | return Qnil; | |
1455 | } | |
7921925c | 1456 | \f |
ffd56f97 JB |
1457 | /* Find the function at the end of a chain of symbol function indirections. */ |
1458 | ||
1459 | /* If OBJECT is a symbol, find the end of its function chain and | |
1460 | return the value found there. If OBJECT is not a symbol, just | |
1461 | return it. If there is a cycle in the function chain, signal a | |
1462 | cyclic-function-indirection error. | |
1463 | ||
1464 | This is like Findirect_function, except that it doesn't signal an | |
1465 | error if the chain ends up unbound. */ | |
1466 | Lisp_Object | |
a2932990 | 1467 | indirect_function (object) |
62476adc | 1468 | register Lisp_Object object; |
ffd56f97 | 1469 | { |
eb8c3be9 | 1470 | Lisp_Object tortoise, hare; |
ffd56f97 | 1471 | |
eb8c3be9 | 1472 | hare = tortoise = object; |
ffd56f97 JB |
1473 | |
1474 | for (;;) | |
1475 | { | |
e9ebc175 | 1476 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
ffd56f97 JB |
1477 | break; |
1478 | hare = XSYMBOL (hare)->function; | |
e9ebc175 | 1479 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
ffd56f97 JB |
1480 | break; |
1481 | hare = XSYMBOL (hare)->function; | |
1482 | ||
eb8c3be9 | 1483 | tortoise = XSYMBOL (tortoise)->function; |
ffd56f97 | 1484 | |
eb8c3be9 | 1485 | if (EQ (hare, tortoise)) |
ffd56f97 JB |
1486 | Fsignal (Qcyclic_function_indirection, Fcons (object, Qnil)); |
1487 | } | |
1488 | ||
1489 | return hare; | |
1490 | } | |
1491 | ||
1492 | DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0, | |
1493 | "Return the function at the end of OBJECT's function chain.\n\ | |
1494 | If OBJECT is a symbol, follow all function indirections and return the final\n\ | |
1495 | function binding.\n\ | |
1496 | If OBJECT is not a symbol, just return it.\n\ | |
1497 | Signal a void-function error if the final symbol is unbound.\n\ | |
1498 | Signal a cyclic-function-indirection error if there is a loop in the\n\ | |
1499 | function chain of symbols.") | |
1500 | (object) | |
1501 | register Lisp_Object object; | |
1502 | { | |
1503 | Lisp_Object result; | |
1504 | ||
1505 | result = indirect_function (object); | |
1506 | ||
1507 | if (EQ (result, Qunbound)) | |
1508 | return Fsignal (Qvoid_function, Fcons (object, Qnil)); | |
1509 | return result; | |
1510 | } | |
1511 | \f | |
7921925c JB |
1512 | /* Extract and set vector and string elements */ |
1513 | ||
1514 | DEFUN ("aref", Faref, Saref, 2, 2, 0, | |
d9c2a0f2 | 1515 | "Return the element of ARRAY at index IDX.\n\ |
4d276982 | 1516 | ARRAY may be a vector, a string, a char-table, a bool-vector,\n\ |
d9c2a0f2 | 1517 | or a byte-code object. IDX starts at 0.") |
7921925c JB |
1518 | (array, idx) |
1519 | register Lisp_Object array; | |
1520 | Lisp_Object idx; | |
1521 | { | |
1522 | register int idxval; | |
1523 | ||
1524 | CHECK_NUMBER (idx, 1); | |
1525 | idxval = XINT (idx); | |
e9ebc175 | 1526 | if (STRINGP (array)) |
7921925c JB |
1527 | { |
1528 | Lisp_Object val; | |
c24e4efe KH |
1529 | if (idxval < 0 || idxval >= XSTRING (array)->size) |
1530 | args_out_of_range (array, idx); | |
1b42cf2e | 1531 | XSETFASTINT (val, (unsigned char) XSTRING (array)->data[idxval]); |
7921925c JB |
1532 | return val; |
1533 | } | |
4d276982 RS |
1534 | else if (BOOL_VECTOR_P (array)) |
1535 | { | |
1536 | int val; | |
4d276982 RS |
1537 | |
1538 | if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size) | |
1539 | args_out_of_range (array, idx); | |
1540 | ||
68be917d KH |
1541 | val = (unsigned char) XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR]; |
1542 | return (val & (1 << (idxval % BITS_PER_CHAR)) ? Qt : Qnil); | |
4d276982 RS |
1543 | } |
1544 | else if (CHAR_TABLE_P (array)) | |
1545 | { | |
1546 | Lisp_Object val; | |
1547 | ||
1548 | if (idxval < 0) | |
1549 | args_out_of_range (array, idx); | |
3a6cf6bd | 1550 | if (idxval < CHAR_TABLE_SINGLE_BYTE_SLOTS) |
8313c4e7 | 1551 | { |
3a6cf6bd KH |
1552 | /* For ASCII or 8-bit European characters, the element is |
1553 | stored in the top table. */ | |
8313c4e7 KH |
1554 | val = XCHAR_TABLE (array)->contents[idxval]; |
1555 | if (NILP (val)) | |
1556 | val = XCHAR_TABLE (array)->defalt; | |
1557 | while (NILP (val)) /* Follow parents until we find some value. */ | |
1558 | { | |
1559 | array = XCHAR_TABLE (array)->parent; | |
1560 | if (NILP (array)) | |
1561 | return Qnil; | |
1562 | val = XCHAR_TABLE (array)->contents[idxval]; | |
1563 | if (NILP (val)) | |
1564 | val = XCHAR_TABLE (array)->defalt; | |
1565 | } | |
1566 | return val; | |
1567 | } | |
4d276982 RS |
1568 | else |
1569 | { | |
8fb379fd KH |
1570 | int idx[3]; /* For charset, code1, and code2. */ |
1571 | int i, len; | |
8313c4e7 KH |
1572 | Lisp_Object sub_array; |
1573 | ||
8313c4e7 | 1574 | SPLIT_NON_ASCII_CHAR (idxval, idx[0], idx[1], idx[2]); |
8fb379fd | 1575 | len = (COMPOSITE_CHAR_P (idxval) || idx[2]) ? 3 : (idx[1] ? 2 : 1); |
3a6cf6bd KH |
1576 | /* The top level char-table should be indexed from 256 for |
1577 | each non-ASCII charsets. */ | |
1578 | idx[0] += 128; | |
4d276982 RS |
1579 | |
1580 | try_parent_char_table: | |
8313c4e7 | 1581 | sub_array = array; |
8fb379fd | 1582 | for (i = 0; i < len; i++) |
4d276982 | 1583 | { |
8313c4e7 KH |
1584 | val = XCHAR_TABLE (sub_array)->contents[idx[i]]; |
1585 | if (NILP (val)) | |
1586 | val = XCHAR_TABLE (sub_array)->defalt; | |
1587 | if (NILP (val)) | |
1588 | { | |
1589 | array = XCHAR_TABLE (array)->parent; | |
1590 | if (NILP (array)) | |
1591 | return Qnil; | |
1592 | goto try_parent_char_table; | |
1593 | } | |
1594 | if (!CHAR_TABLE_P (val)) | |
1595 | return val; | |
1596 | sub_array = val; | |
4d276982 | 1597 | } |
8313c4e7 KH |
1598 | /* We come here because ARRAY is deeper than the specified |
1599 | indices. We return a default value stored at the deepest | |
1600 | level specified. */ | |
1601 | val = XCHAR_TABLE (sub_array)->defalt; | |
1602 | if (NILP (val)) | |
4d276982 RS |
1603 | { |
1604 | array = XCHAR_TABLE (array)->parent; | |
8313c4e7 KH |
1605 | if (NILP (array)) |
1606 | return Qnil; | |
4d276982 RS |
1607 | goto try_parent_char_table; |
1608 | } | |
4d276982 RS |
1609 | return val; |
1610 | } | |
4d276982 | 1611 | } |
7921925c | 1612 | else |
c24e4efe | 1613 | { |
7f358972 RS |
1614 | int size; |
1615 | if (VECTORP (array)) | |
1616 | size = XVECTOR (array)->size; | |
1617 | else if (COMPILEDP (array)) | |
1618 | size = XVECTOR (array)->size & PSEUDOVECTOR_SIZE_MASK; | |
1619 | else | |
1620 | wrong_type_argument (Qarrayp, array); | |
1621 | ||
1622 | if (idxval < 0 || idxval >= size) | |
c24e4efe KH |
1623 | args_out_of_range (array, idx); |
1624 | return XVECTOR (array)->contents[idxval]; | |
1625 | } | |
7921925c JB |
1626 | } |
1627 | ||
1628 | DEFUN ("aset", Faset, Saset, 3, 3, 0, | |
73d40355 RS |
1629 | "Store into the element of ARRAY at index IDX the value NEWELT.\n\ |
1630 | ARRAY may be a vector or a string. IDX starts at 0.") | |
7921925c JB |
1631 | (array, idx, newelt) |
1632 | register Lisp_Object array; | |
1633 | Lisp_Object idx, newelt; | |
1634 | { | |
1635 | register int idxval; | |
1636 | ||
1637 | CHECK_NUMBER (idx, 1); | |
1638 | idxval = XINT (idx); | |
4d276982 RS |
1639 | if (!VECTORP (array) && !STRINGP (array) && !BOOL_VECTOR_P (array) |
1640 | && ! CHAR_TABLE_P (array)) | |
7921925c | 1641 | array = wrong_type_argument (Qarrayp, array); |
7921925c JB |
1642 | CHECK_IMPURE (array); |
1643 | ||
e9ebc175 | 1644 | if (VECTORP (array)) |
c24e4efe KH |
1645 | { |
1646 | if (idxval < 0 || idxval >= XVECTOR (array)->size) | |
1647 | args_out_of_range (array, idx); | |
1648 | XVECTOR (array)->contents[idxval] = newelt; | |
1649 | } | |
4d276982 RS |
1650 | else if (BOOL_VECTOR_P (array)) |
1651 | { | |
1652 | int val; | |
4d276982 RS |
1653 | |
1654 | if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size) | |
1655 | args_out_of_range (array, idx); | |
1656 | ||
68be917d | 1657 | val = (unsigned char) XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR]; |
4d276982 RS |
1658 | |
1659 | if (! NILP (newelt)) | |
68be917d | 1660 | val |= 1 << (idxval % BITS_PER_CHAR); |
4d276982 | 1661 | else |
68be917d KH |
1662 | val &= ~(1 << (idxval % BITS_PER_CHAR)); |
1663 | XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR] = val; | |
4d276982 RS |
1664 | } |
1665 | else if (CHAR_TABLE_P (array)) | |
1666 | { | |
1667 | Lisp_Object val; | |
1668 | ||
1669 | if (idxval < 0) | |
1670 | args_out_of_range (array, idx); | |
3a6cf6bd | 1671 | if (idxval < CHAR_TABLE_SINGLE_BYTE_SLOTS) |
8313c4e7 | 1672 | XCHAR_TABLE (array)->contents[idxval] = newelt; |
4d276982 RS |
1673 | else |
1674 | { | |
8fb379fd KH |
1675 | int idx[3]; /* For charset, code1, and code2. */ |
1676 | int i, len; | |
8313c4e7 | 1677 | Lisp_Object val; |
4d276982 | 1678 | |
8313c4e7 | 1679 | SPLIT_NON_ASCII_CHAR (idxval, idx[0], idx[1], idx[2]); |
8fb379fd | 1680 | len = (COMPOSITE_CHAR_P (idxval) || idx[2]) ? 2 : (idx[1] ? 1 : 0); |
3a6cf6bd KH |
1681 | /* The top level char-table should be indexed from 256 for |
1682 | each non-ASCII charsets. */ | |
1683 | idx[0] += 128; | |
4d276982 | 1684 | |
8fb379fd | 1685 | for (i = 0; i < len; i++) |
8313c4e7 KH |
1686 | { |
1687 | val = XCHAR_TABLE (array)->contents[idx[i]]; | |
1688 | if (CHAR_TABLE_P (val)) | |
1689 | /* Look into this deeper array. */ | |
1690 | array = val; | |
1691 | else | |
1692 | { | |
1693 | /* VAL is the leaf. Create a deeper array with the | |
1694 | default value VAL, set it in the slot of VAL, and | |
1695 | look into it. */ | |
1696 | array = XCHAR_TABLE (array)->contents[idx[i]] | |
1697 | = Fmake_char_table (Qnil, Qnil); | |
1698 | XCHAR_TABLE (array)->defalt = val; | |
1699 | } | |
1700 | } | |
1701 | return XCHAR_TABLE (array)->contents[idx[i]] = newelt; | |
4d276982 | 1702 | } |
4d276982 | 1703 | } |
7921925c JB |
1704 | else |
1705 | { | |
c24e4efe KH |
1706 | if (idxval < 0 || idxval >= XSTRING (array)->size) |
1707 | args_out_of_range (array, idx); | |
7921925c JB |
1708 | CHECK_NUMBER (newelt, 2); |
1709 | XSTRING (array)->data[idxval] = XINT (newelt); | |
1710 | } | |
1711 | ||
1712 | return newelt; | |
1713 | } | |
7921925c JB |
1714 | \f |
1715 | /* Arithmetic functions */ | |
1716 | ||
1717 | enum comparison { equal, notequal, less, grtr, less_or_equal, grtr_or_equal }; | |
1718 | ||
1719 | Lisp_Object | |
1720 | arithcompare (num1, num2, comparison) | |
1721 | Lisp_Object num1, num2; | |
1722 | enum comparison comparison; | |
1723 | { | |
1724 | double f1, f2; | |
1725 | int floatp = 0; | |
1726 | ||
1727 | #ifdef LISP_FLOAT_TYPE | |
1728 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1, 0); | |
1729 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2, 0); | |
1730 | ||
e9ebc175 | 1731 | if (FLOATP (num1) || FLOATP (num2)) |
7921925c JB |
1732 | { |
1733 | floatp = 1; | |
e9ebc175 KH |
1734 | f1 = (FLOATP (num1)) ? XFLOAT (num1)->data : XINT (num1); |
1735 | f2 = (FLOATP (num2)) ? XFLOAT (num2)->data : XINT (num2); | |
7921925c JB |
1736 | } |
1737 | #else | |
1738 | CHECK_NUMBER_COERCE_MARKER (num1, 0); | |
1739 | CHECK_NUMBER_COERCE_MARKER (num2, 0); | |
1740 | #endif /* LISP_FLOAT_TYPE */ | |
1741 | ||
1742 | switch (comparison) | |
1743 | { | |
1744 | case equal: | |
1745 | if (floatp ? f1 == f2 : XINT (num1) == XINT (num2)) | |
1746 | return Qt; | |
1747 | return Qnil; | |
1748 | ||
1749 | case notequal: | |
1750 | if (floatp ? f1 != f2 : XINT (num1) != XINT (num2)) | |
1751 | return Qt; | |
1752 | return Qnil; | |
1753 | ||
1754 | case less: | |
1755 | if (floatp ? f1 < f2 : XINT (num1) < XINT (num2)) | |
1756 | return Qt; | |
1757 | return Qnil; | |
1758 | ||
1759 | case less_or_equal: | |
1760 | if (floatp ? f1 <= f2 : XINT (num1) <= XINT (num2)) | |
1761 | return Qt; | |
1762 | return Qnil; | |
1763 | ||
1764 | case grtr: | |
1765 | if (floatp ? f1 > f2 : XINT (num1) > XINT (num2)) | |
1766 | return Qt; | |
1767 | return Qnil; | |
1768 | ||
1769 | case grtr_or_equal: | |
1770 | if (floatp ? f1 >= f2 : XINT (num1) >= XINT (num2)) | |
1771 | return Qt; | |
1772 | return Qnil; | |
25e40a4b JB |
1773 | |
1774 | default: | |
1775 | abort (); | |
7921925c JB |
1776 | } |
1777 | } | |
1778 | ||
1779 | DEFUN ("=", Feqlsign, Seqlsign, 2, 2, 0, | |
1780 | "T if two args, both numbers or markers, are equal.") | |
1781 | (num1, num2) | |
1782 | register Lisp_Object num1, num2; | |
1783 | { | |
1784 | return arithcompare (num1, num2, equal); | |
1785 | } | |
1786 | ||
1787 | DEFUN ("<", Flss, Slss, 2, 2, 0, | |
1788 | "T if first arg is less than second arg. Both must be numbers or markers.") | |
1789 | (num1, num2) | |
1790 | register Lisp_Object num1, num2; | |
1791 | { | |
1792 | return arithcompare (num1, num2, less); | |
1793 | } | |
1794 | ||
1795 | DEFUN (">", Fgtr, Sgtr, 2, 2, 0, | |
1796 | "T if first arg is greater than second arg. Both must be numbers or markers.") | |
1797 | (num1, num2) | |
1798 | register Lisp_Object num1, num2; | |
1799 | { | |
1800 | return arithcompare (num1, num2, grtr); | |
1801 | } | |
1802 | ||
1803 | DEFUN ("<=", Fleq, Sleq, 2, 2, 0, | |
1804 | "T if first arg is less than or equal to second arg.\n\ | |
1805 | Both must be numbers or markers.") | |
1806 | (num1, num2) | |
1807 | register Lisp_Object num1, num2; | |
1808 | { | |
1809 | return arithcompare (num1, num2, less_or_equal); | |
1810 | } | |
1811 | ||
1812 | DEFUN (">=", Fgeq, Sgeq, 2, 2, 0, | |
1813 | "T if first arg is greater than or equal to second arg.\n\ | |
1814 | Both must be numbers or markers.") | |
1815 | (num1, num2) | |
1816 | register Lisp_Object num1, num2; | |
1817 | { | |
1818 | return arithcompare (num1, num2, grtr_or_equal); | |
1819 | } | |
1820 | ||
1821 | DEFUN ("/=", Fneq, Sneq, 2, 2, 0, | |
1822 | "T if first arg is not equal to second arg. Both must be numbers or markers.") | |
1823 | (num1, num2) | |
1824 | register Lisp_Object num1, num2; | |
1825 | { | |
1826 | return arithcompare (num1, num2, notequal); | |
1827 | } | |
1828 | ||
1829 | DEFUN ("zerop", Fzerop, Szerop, 1, 1, 0, "T if NUMBER is zero.") | |
d9c2a0f2 EN |
1830 | (number) |
1831 | register Lisp_Object number; | |
7921925c JB |
1832 | { |
1833 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 | 1834 | CHECK_NUMBER_OR_FLOAT (number, 0); |
7921925c | 1835 | |
d9c2a0f2 | 1836 | if (FLOATP (number)) |
7921925c | 1837 | { |
d9c2a0f2 | 1838 | if (XFLOAT(number)->data == 0.0) |
7921925c JB |
1839 | return Qt; |
1840 | return Qnil; | |
1841 | } | |
1842 | #else | |
d9c2a0f2 | 1843 | CHECK_NUMBER (number, 0); |
7921925c JB |
1844 | #endif /* LISP_FLOAT_TYPE */ |
1845 | ||
d9c2a0f2 | 1846 | if (!XINT (number)) |
7921925c JB |
1847 | return Qt; |
1848 | return Qnil; | |
1849 | } | |
1850 | \f | |
34f4f6c6 | 1851 | /* Convert between long values and pairs of Lisp integers. */ |
51cf3e31 JB |
1852 | |
1853 | Lisp_Object | |
1854 | long_to_cons (i) | |
1855 | unsigned long i; | |
1856 | { | |
1857 | unsigned int top = i >> 16; | |
1858 | unsigned int bot = i & 0xFFFF; | |
1859 | if (top == 0) | |
1860 | return make_number (bot); | |
b42cfa11 | 1861 | if (top == (unsigned long)-1 >> 16) |
51cf3e31 JB |
1862 | return Fcons (make_number (-1), make_number (bot)); |
1863 | return Fcons (make_number (top), make_number (bot)); | |
1864 | } | |
1865 | ||
1866 | unsigned long | |
1867 | cons_to_long (c) | |
1868 | Lisp_Object c; | |
1869 | { | |
878a80cc | 1870 | Lisp_Object top, bot; |
51cf3e31 JB |
1871 | if (INTEGERP (c)) |
1872 | return XINT (c); | |
1873 | top = XCONS (c)->car; | |
1874 | bot = XCONS (c)->cdr; | |
1875 | if (CONSP (bot)) | |
1876 | bot = XCONS (bot)->car; | |
1877 | return ((XINT (top) << 16) | XINT (bot)); | |
1878 | } | |
1879 | \f | |
f2980264 | 1880 | DEFUN ("number-to-string", Fnumber_to_string, Snumber_to_string, 1, 1, 0, |
d9c2a0f2 | 1881 | "Convert NUMBER to a string by printing it in decimal.\n\ |
25e40a4b | 1882 | Uses a minus sign if negative.\n\ |
d9c2a0f2 EN |
1883 | NUMBER may be an integer or a floating point number.") |
1884 | (number) | |
1885 | Lisp_Object number; | |
7921925c | 1886 | { |
6030ce64 | 1887 | char buffer[VALBITS]; |
7921925c JB |
1888 | |
1889 | #ifndef LISP_FLOAT_TYPE | |
d9c2a0f2 | 1890 | CHECK_NUMBER (number, 0); |
7921925c | 1891 | #else |
d9c2a0f2 | 1892 | CHECK_NUMBER_OR_FLOAT (number, 0); |
7921925c | 1893 | |
d9c2a0f2 | 1894 | if (FLOATP (number)) |
7921925c JB |
1895 | { |
1896 | char pigbuf[350]; /* see comments in float_to_string */ | |
1897 | ||
d9c2a0f2 | 1898 | float_to_string (pigbuf, XFLOAT(number)->data); |
7403b5c8 | 1899 | return build_string (pigbuf); |
7921925c JB |
1900 | } |
1901 | #endif /* LISP_FLOAT_TYPE */ | |
1902 | ||
e6c82a8d | 1903 | if (sizeof (int) == sizeof (EMACS_INT)) |
d9c2a0f2 | 1904 | sprintf (buffer, "%d", XINT (number)); |
e6c82a8d | 1905 | else if (sizeof (long) == sizeof (EMACS_INT)) |
d9c2a0f2 | 1906 | sprintf (buffer, "%ld", XINT (number)); |
e6c82a8d RS |
1907 | else |
1908 | abort (); | |
7921925c JB |
1909 | return build_string (buffer); |
1910 | } | |
1911 | ||
25e40a4b JB |
1912 | DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 1, 0, |
1913 | "Convert STRING to a number by parsing it as a decimal number.\n\ | |
1c1c17eb RS |
1914 | This parses both integers and floating point numbers.\n\ |
1915 | It ignores leading spaces and tabs.") | |
d9c2a0f2 EN |
1916 | (string) |
1917 | register Lisp_Object string; | |
7921925c | 1918 | { |
e6c82a8d | 1919 | Lisp_Object value; |
0a3e4d65 | 1920 | unsigned char *p; |
25e40a4b | 1921 | |
d9c2a0f2 | 1922 | CHECK_STRING (string, 0); |
7921925c | 1923 | |
d9c2a0f2 | 1924 | p = XSTRING (string)->data; |
25e40a4b JB |
1925 | |
1926 | /* Skip any whitespace at the front of the number. Some versions of | |
1927 | atoi do this anyway, so we might as well make Emacs lisp consistent. */ | |
0a3e4d65 | 1928 | while (*p == ' ' || *p == '\t') |
25e40a4b JB |
1929 | p++; |
1930 | ||
7921925c | 1931 | #ifdef LISP_FLOAT_TYPE |
25e40a4b JB |
1932 | if (isfloat_string (p)) |
1933 | return make_float (atof (p)); | |
7921925c JB |
1934 | #endif /* LISP_FLOAT_TYPE */ |
1935 | ||
e6c82a8d RS |
1936 | if (sizeof (int) == sizeof (EMACS_INT)) |
1937 | XSETINT (value, atoi (p)); | |
1938 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
1939 | XSETINT (value, atol (p)); | |
1940 | else | |
1941 | abort (); | |
1942 | return value; | |
7921925c | 1943 | } |
7403b5c8 | 1944 | \f |
7921925c JB |
1945 | enum arithop |
1946 | { Aadd, Asub, Amult, Adiv, Alogand, Alogior, Alogxor, Amax, Amin }; | |
1947 | ||
b06faa91 | 1948 | extern Lisp_Object float_arith_driver (); |
ad8d56b9 | 1949 | extern Lisp_Object fmod_float (); |
b06faa91 | 1950 | |
7921925c | 1951 | Lisp_Object |
87fbf902 | 1952 | arith_driver (code, nargs, args) |
7921925c JB |
1953 | enum arithop code; |
1954 | int nargs; | |
1955 | register Lisp_Object *args; | |
1956 | { | |
1957 | register Lisp_Object val; | |
1958 | register int argnum; | |
5260234d RS |
1959 | register EMACS_INT accum; |
1960 | register EMACS_INT next; | |
7921925c | 1961 | |
0220c518 | 1962 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
1963 | { |
1964 | case Alogior: | |
1965 | case Alogxor: | |
1966 | case Aadd: | |
1967 | case Asub: | |
1968 | accum = 0; break; | |
1969 | case Amult: | |
1970 | accum = 1; break; | |
1971 | case Alogand: | |
1972 | accum = -1; break; | |
1973 | } | |
1974 | ||
1975 | for (argnum = 0; argnum < nargs; argnum++) | |
1976 | { | |
1977 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
1978 | #ifdef LISP_FLOAT_TYPE | |
1979 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
1980 | ||
e9ebc175 | 1981 | if (FLOATP (val)) /* time to do serious math */ |
7921925c JB |
1982 | return (float_arith_driver ((double) accum, argnum, code, |
1983 | nargs, args)); | |
1984 | #else | |
1985 | CHECK_NUMBER_COERCE_MARKER (val, argnum); | |
1986 | #endif /* LISP_FLOAT_TYPE */ | |
1987 | args[argnum] = val; /* runs into a compiler bug. */ | |
1988 | next = XINT (args[argnum]); | |
0220c518 | 1989 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
1990 | { |
1991 | case Aadd: accum += next; break; | |
1992 | case Asub: | |
1993 | if (!argnum && nargs != 1) | |
1994 | next = - next; | |
1995 | accum -= next; | |
1996 | break; | |
1997 | case Amult: accum *= next; break; | |
1998 | case Adiv: | |
1999 | if (!argnum) accum = next; | |
87fbf902 RS |
2000 | else |
2001 | { | |
2002 | if (next == 0) | |
2003 | Fsignal (Qarith_error, Qnil); | |
2004 | accum /= next; | |
2005 | } | |
7921925c JB |
2006 | break; |
2007 | case Alogand: accum &= next; break; | |
2008 | case Alogior: accum |= next; break; | |
2009 | case Alogxor: accum ^= next; break; | |
2010 | case Amax: if (!argnum || next > accum) accum = next; break; | |
2011 | case Amin: if (!argnum || next < accum) accum = next; break; | |
2012 | } | |
2013 | } | |
2014 | ||
f187f1f7 | 2015 | XSETINT (val, accum); |
7921925c JB |
2016 | return val; |
2017 | } | |
2018 | ||
1a2f2d33 KH |
2019 | #undef isnan |
2020 | #define isnan(x) ((x) != (x)) | |
2021 | ||
bc1c9d7e PE |
2022 | #ifdef LISP_FLOAT_TYPE |
2023 | ||
7921925c JB |
2024 | Lisp_Object |
2025 | float_arith_driver (accum, argnum, code, nargs, args) | |
2026 | double accum; | |
2027 | register int argnum; | |
2028 | enum arithop code; | |
2029 | int nargs; | |
2030 | register Lisp_Object *args; | |
2031 | { | |
2032 | register Lisp_Object val; | |
2033 | double next; | |
7403b5c8 | 2034 | |
7921925c JB |
2035 | for (; argnum < nargs; argnum++) |
2036 | { | |
2037 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
2038 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
2039 | ||
e9ebc175 | 2040 | if (FLOATP (val)) |
7921925c JB |
2041 | { |
2042 | next = XFLOAT (val)->data; | |
2043 | } | |
2044 | else | |
2045 | { | |
2046 | args[argnum] = val; /* runs into a compiler bug. */ | |
2047 | next = XINT (args[argnum]); | |
2048 | } | |
0220c518 | 2049 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
2050 | { |
2051 | case Aadd: | |
2052 | accum += next; | |
2053 | break; | |
2054 | case Asub: | |
2055 | if (!argnum && nargs != 1) | |
2056 | next = - next; | |
2057 | accum -= next; | |
2058 | break; | |
2059 | case Amult: | |
2060 | accum *= next; | |
2061 | break; | |
2062 | case Adiv: | |
2063 | if (!argnum) | |
2064 | accum = next; | |
2065 | else | |
87fbf902 | 2066 | { |
ad8d56b9 | 2067 | if (! IEEE_FLOATING_POINT && next == 0) |
87fbf902 RS |
2068 | Fsignal (Qarith_error, Qnil); |
2069 | accum /= next; | |
2070 | } | |
7921925c JB |
2071 | break; |
2072 | case Alogand: | |
2073 | case Alogior: | |
2074 | case Alogxor: | |
2075 | return wrong_type_argument (Qinteger_or_marker_p, val); | |
2076 | case Amax: | |
1a2f2d33 | 2077 | if (!argnum || isnan (next) || next > accum) |
7921925c JB |
2078 | accum = next; |
2079 | break; | |
2080 | case Amin: | |
1a2f2d33 | 2081 | if (!argnum || isnan (next) || next < accum) |
7921925c JB |
2082 | accum = next; |
2083 | break; | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | return make_float (accum); | |
2088 | } | |
2089 | #endif /* LISP_FLOAT_TYPE */ | |
2090 | ||
2091 | DEFUN ("+", Fplus, Splus, 0, MANY, 0, | |
2092 | "Return sum of any number of arguments, which are numbers or markers.") | |
2093 | (nargs, args) | |
2094 | int nargs; | |
2095 | Lisp_Object *args; | |
2096 | { | |
2097 | return arith_driver (Aadd, nargs, args); | |
2098 | } | |
2099 | ||
2100 | DEFUN ("-", Fminus, Sminus, 0, MANY, 0, | |
2101 | "Negate number or subtract numbers or markers.\n\ | |
2102 | With one arg, negates it. With more than one arg,\n\ | |
2103 | subtracts all but the first from the first.") | |
2104 | (nargs, args) | |
2105 | int nargs; | |
2106 | Lisp_Object *args; | |
2107 | { | |
2108 | return arith_driver (Asub, nargs, args); | |
2109 | } | |
2110 | ||
2111 | DEFUN ("*", Ftimes, Stimes, 0, MANY, 0, | |
2112 | "Returns product of any number of arguments, which are numbers or markers.") | |
2113 | (nargs, args) | |
2114 | int nargs; | |
2115 | Lisp_Object *args; | |
2116 | { | |
2117 | return arith_driver (Amult, nargs, args); | |
2118 | } | |
2119 | ||
2120 | DEFUN ("/", Fquo, Squo, 2, MANY, 0, | |
2121 | "Returns first argument divided by all the remaining arguments.\n\ | |
2122 | The arguments must be numbers or markers.") | |
2123 | (nargs, args) | |
2124 | int nargs; | |
2125 | Lisp_Object *args; | |
2126 | { | |
2127 | return arith_driver (Adiv, nargs, args); | |
2128 | } | |
2129 | ||
2130 | DEFUN ("%", Frem, Srem, 2, 2, 0, | |
d9c2a0f2 | 2131 | "Returns remainder of X divided by Y.\n\ |
aa29f9b9 | 2132 | Both must be integers or markers.") |
d9c2a0f2 EN |
2133 | (x, y) |
2134 | register Lisp_Object x, y; | |
7921925c JB |
2135 | { |
2136 | Lisp_Object val; | |
2137 | ||
d9c2a0f2 EN |
2138 | CHECK_NUMBER_COERCE_MARKER (x, 0); |
2139 | CHECK_NUMBER_COERCE_MARKER (y, 1); | |
7921925c | 2140 | |
d9c2a0f2 | 2141 | if (XFASTINT (y) == 0) |
87fbf902 RS |
2142 | Fsignal (Qarith_error, Qnil); |
2143 | ||
d9c2a0f2 | 2144 | XSETINT (val, XINT (x) % XINT (y)); |
7921925c JB |
2145 | return val; |
2146 | } | |
2147 | ||
1d66a5fa KH |
2148 | #ifndef HAVE_FMOD |
2149 | double | |
2150 | fmod (f1, f2) | |
2151 | double f1, f2; | |
2152 | { | |
bc1c9d7e PE |
2153 | double r = f1; |
2154 | ||
fa43b1e8 KH |
2155 | if (f2 < 0.0) |
2156 | f2 = -f2; | |
bc1c9d7e PE |
2157 | |
2158 | /* If the magnitude of the result exceeds that of the divisor, or | |
2159 | the sign of the result does not agree with that of the dividend, | |
2160 | iterate with the reduced value. This does not yield a | |
2161 | particularly accurate result, but at least it will be in the | |
2162 | range promised by fmod. */ | |
2163 | do | |
2164 | r -= f2 * floor (r / f2); | |
2165 | while (f2 <= (r < 0 ? -r : r) || ((r < 0) != (f1 < 0) && ! isnan (r))); | |
2166 | ||
2167 | return r; | |
1d66a5fa KH |
2168 | } |
2169 | #endif /* ! HAVE_FMOD */ | |
2170 | ||
44fa9da5 PE |
2171 | DEFUN ("mod", Fmod, Smod, 2, 2, 0, |
2172 | "Returns X modulo Y.\n\ | |
2173 | The result falls between zero (inclusive) and Y (exclusive).\n\ | |
2174 | Both X and Y must be numbers or markers.") | |
d9c2a0f2 EN |
2175 | (x, y) |
2176 | register Lisp_Object x, y; | |
44fa9da5 PE |
2177 | { |
2178 | Lisp_Object val; | |
5260234d | 2179 | EMACS_INT i1, i2; |
44fa9da5 PE |
2180 | |
2181 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 EN |
2182 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (x, 0); |
2183 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (y, 1); | |
44fa9da5 | 2184 | |
d9c2a0f2 | 2185 | if (FLOATP (x) || FLOATP (y)) |
ad8d56b9 PE |
2186 | return fmod_float (x, y); |
2187 | ||
44fa9da5 | 2188 | #else /* not LISP_FLOAT_TYPE */ |
d9c2a0f2 EN |
2189 | CHECK_NUMBER_COERCE_MARKER (x, 0); |
2190 | CHECK_NUMBER_COERCE_MARKER (y, 1); | |
44fa9da5 PE |
2191 | #endif /* not LISP_FLOAT_TYPE */ |
2192 | ||
d9c2a0f2 EN |
2193 | i1 = XINT (x); |
2194 | i2 = XINT (y); | |
44fa9da5 PE |
2195 | |
2196 | if (i2 == 0) | |
2197 | Fsignal (Qarith_error, Qnil); | |
7403b5c8 | 2198 | |
44fa9da5 PE |
2199 | i1 %= i2; |
2200 | ||
2201 | /* If the "remainder" comes out with the wrong sign, fix it. */ | |
04f7ec69 | 2202 | if (i2 < 0 ? i1 > 0 : i1 < 0) |
44fa9da5 PE |
2203 | i1 += i2; |
2204 | ||
f187f1f7 | 2205 | XSETINT (val, i1); |
44fa9da5 PE |
2206 | return val; |
2207 | } | |
2208 | ||
7921925c JB |
2209 | DEFUN ("max", Fmax, Smax, 1, MANY, 0, |
2210 | "Return largest of all the arguments (which must be numbers or markers).\n\ | |
2211 | The value is always a number; markers are converted to numbers.") | |
2212 | (nargs, args) | |
2213 | int nargs; | |
2214 | Lisp_Object *args; | |
2215 | { | |
2216 | return arith_driver (Amax, nargs, args); | |
2217 | } | |
2218 | ||
2219 | DEFUN ("min", Fmin, Smin, 1, MANY, 0, | |
2220 | "Return smallest of all the arguments (which must be numbers or markers).\n\ | |
2221 | The value is always a number; markers are converted to numbers.") | |
2222 | (nargs, args) | |
2223 | int nargs; | |
2224 | Lisp_Object *args; | |
2225 | { | |
2226 | return arith_driver (Amin, nargs, args); | |
2227 | } | |
2228 | ||
2229 | DEFUN ("logand", Flogand, Slogand, 0, MANY, 0, | |
2230 | "Return bitwise-and of all the arguments.\n\ | |
2231 | Arguments may be integers, or markers converted to integers.") | |
2232 | (nargs, args) | |
2233 | int nargs; | |
2234 | Lisp_Object *args; | |
2235 | { | |
2236 | return arith_driver (Alogand, nargs, args); | |
2237 | } | |
2238 | ||
2239 | DEFUN ("logior", Flogior, Slogior, 0, MANY, 0, | |
2240 | "Return bitwise-or of all the arguments.\n\ | |
2241 | Arguments may be integers, or markers converted to integers.") | |
2242 | (nargs, args) | |
2243 | int nargs; | |
2244 | Lisp_Object *args; | |
2245 | { | |
2246 | return arith_driver (Alogior, nargs, args); | |
2247 | } | |
2248 | ||
2249 | DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0, | |
2250 | "Return bitwise-exclusive-or of all the arguments.\n\ | |
2251 | Arguments may be integers, or markers converted to integers.") | |
2252 | (nargs, args) | |
2253 | int nargs; | |
2254 | Lisp_Object *args; | |
2255 | { | |
2256 | return arith_driver (Alogxor, nargs, args); | |
2257 | } | |
2258 | ||
2259 | DEFUN ("ash", Fash, Sash, 2, 2, 0, | |
2260 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
2261 | If COUNT is negative, shifting is actually to the right.\n\ | |
2262 | In this case, the sign bit is duplicated.") | |
3b9f7964 RS |
2263 | (value, count) |
2264 | register Lisp_Object value, count; | |
7921925c JB |
2265 | { |
2266 | register Lisp_Object val; | |
2267 | ||
3d9652eb RS |
2268 | CHECK_NUMBER (value, 0); |
2269 | CHECK_NUMBER (count, 1); | |
7921925c | 2270 | |
3d9652eb RS |
2271 | if (XINT (count) > 0) |
2272 | XSETINT (val, XINT (value) << XFASTINT (count)); | |
7921925c | 2273 | else |
3d9652eb | 2274 | XSETINT (val, XINT (value) >> -XINT (count)); |
7921925c JB |
2275 | return val; |
2276 | } | |
2277 | ||
2278 | DEFUN ("lsh", Flsh, Slsh, 2, 2, 0, | |
2279 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
2280 | If COUNT is negative, shifting is actually to the right.\n\ | |
2281 | In this case, zeros are shifted in on the left.") | |
3d9652eb RS |
2282 | (value, count) |
2283 | register Lisp_Object value, count; | |
7921925c JB |
2284 | { |
2285 | register Lisp_Object val; | |
2286 | ||
3d9652eb RS |
2287 | CHECK_NUMBER (value, 0); |
2288 | CHECK_NUMBER (count, 1); | |
7921925c | 2289 | |
3d9652eb RS |
2290 | if (XINT (count) > 0) |
2291 | XSETINT (val, (EMACS_UINT) XUINT (value) << XFASTINT (count)); | |
7921925c | 2292 | else |
3d9652eb | 2293 | XSETINT (val, (EMACS_UINT) XUINT (value) >> -XINT (count)); |
7921925c JB |
2294 | return val; |
2295 | } | |
2296 | ||
2297 | DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0, | |
2298 | "Return NUMBER plus one. NUMBER may be a number or a marker.\n\ | |
2299 | Markers are converted to integers.") | |
d9c2a0f2 EN |
2300 | (number) |
2301 | register Lisp_Object number; | |
7921925c JB |
2302 | { |
2303 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 | 2304 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number, 0); |
7921925c | 2305 | |
d9c2a0f2 EN |
2306 | if (FLOATP (number)) |
2307 | return (make_float (1.0 + XFLOAT (number)->data)); | |
7921925c | 2308 | #else |
d9c2a0f2 | 2309 | CHECK_NUMBER_COERCE_MARKER (number, 0); |
7921925c JB |
2310 | #endif /* LISP_FLOAT_TYPE */ |
2311 | ||
d9c2a0f2 EN |
2312 | XSETINT (number, XINT (number) + 1); |
2313 | return number; | |
7921925c JB |
2314 | } |
2315 | ||
2316 | DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0, | |
2317 | "Return NUMBER minus one. NUMBER may be a number or a marker.\n\ | |
2318 | Markers are converted to integers.") | |
d9c2a0f2 EN |
2319 | (number) |
2320 | register Lisp_Object number; | |
7921925c JB |
2321 | { |
2322 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 | 2323 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number, 0); |
7921925c | 2324 | |
d9c2a0f2 EN |
2325 | if (FLOATP (number)) |
2326 | return (make_float (-1.0 + XFLOAT (number)->data)); | |
7921925c | 2327 | #else |
d9c2a0f2 | 2328 | CHECK_NUMBER_COERCE_MARKER (number, 0); |
7921925c JB |
2329 | #endif /* LISP_FLOAT_TYPE */ |
2330 | ||
d9c2a0f2 EN |
2331 | XSETINT (number, XINT (number) - 1); |
2332 | return number; | |
7921925c JB |
2333 | } |
2334 | ||
2335 | DEFUN ("lognot", Flognot, Slognot, 1, 1, 0, | |
d9c2a0f2 EN |
2336 | "Return the bitwise complement of NUMBER. NUMBER must be an integer.") |
2337 | (number) | |
2338 | register Lisp_Object number; | |
7921925c | 2339 | { |
d9c2a0f2 | 2340 | CHECK_NUMBER (number, 0); |
53924017 | 2341 | XSETINT (number, ~XINT (number)); |
d9c2a0f2 | 2342 | return number; |
7921925c JB |
2343 | } |
2344 | \f | |
2345 | void | |
2346 | syms_of_data () | |
2347 | { | |
6315e761 RS |
2348 | Lisp_Object error_tail, arith_tail; |
2349 | ||
7921925c JB |
2350 | Qquote = intern ("quote"); |
2351 | Qlambda = intern ("lambda"); | |
2352 | Qsubr = intern ("subr"); | |
2353 | Qerror_conditions = intern ("error-conditions"); | |
2354 | Qerror_message = intern ("error-message"); | |
2355 | Qtop_level = intern ("top-level"); | |
2356 | ||
2357 | Qerror = intern ("error"); | |
2358 | Qquit = intern ("quit"); | |
2359 | Qwrong_type_argument = intern ("wrong-type-argument"); | |
2360 | Qargs_out_of_range = intern ("args-out-of-range"); | |
2361 | Qvoid_function = intern ("void-function"); | |
ffd56f97 | 2362 | Qcyclic_function_indirection = intern ("cyclic-function-indirection"); |
7921925c JB |
2363 | Qvoid_variable = intern ("void-variable"); |
2364 | Qsetting_constant = intern ("setting-constant"); | |
2365 | Qinvalid_read_syntax = intern ("invalid-read-syntax"); | |
2366 | ||
2367 | Qinvalid_function = intern ("invalid-function"); | |
2368 | Qwrong_number_of_arguments = intern ("wrong-number-of-arguments"); | |
2369 | Qno_catch = intern ("no-catch"); | |
2370 | Qend_of_file = intern ("end-of-file"); | |
2371 | Qarith_error = intern ("arith-error"); | |
2372 | Qbeginning_of_buffer = intern ("beginning-of-buffer"); | |
2373 | Qend_of_buffer = intern ("end-of-buffer"); | |
2374 | Qbuffer_read_only = intern ("buffer-read-only"); | |
3b8819d6 | 2375 | Qmark_inactive = intern ("mark-inactive"); |
7921925c JB |
2376 | |
2377 | Qlistp = intern ("listp"); | |
2378 | Qconsp = intern ("consp"); | |
2379 | Qsymbolp = intern ("symbolp"); | |
2380 | Qintegerp = intern ("integerp"); | |
2381 | Qnatnump = intern ("natnump"); | |
8e86942b | 2382 | Qwholenump = intern ("wholenump"); |
7921925c JB |
2383 | Qstringp = intern ("stringp"); |
2384 | Qarrayp = intern ("arrayp"); | |
2385 | Qsequencep = intern ("sequencep"); | |
2386 | Qbufferp = intern ("bufferp"); | |
2387 | Qvectorp = intern ("vectorp"); | |
2388 | Qchar_or_string_p = intern ("char-or-string-p"); | |
2389 | Qmarkerp = intern ("markerp"); | |
07bd8472 | 2390 | Qbuffer_or_string_p = intern ("buffer-or-string-p"); |
7921925c JB |
2391 | Qinteger_or_marker_p = intern ("integer-or-marker-p"); |
2392 | Qboundp = intern ("boundp"); | |
2393 | Qfboundp = intern ("fboundp"); | |
2394 | ||
2395 | #ifdef LISP_FLOAT_TYPE | |
2396 | Qfloatp = intern ("floatp"); | |
2397 | Qnumberp = intern ("numberp"); | |
2398 | Qnumber_or_marker_p = intern ("number-or-marker-p"); | |
2399 | #endif /* LISP_FLOAT_TYPE */ | |
2400 | ||
4d276982 | 2401 | Qchar_table_p = intern ("char-table-p"); |
7f0edce7 | 2402 | Qvector_or_char_table_p = intern ("vector-or-char-table-p"); |
4d276982 | 2403 | |
7921925c JB |
2404 | Qcdr = intern ("cdr"); |
2405 | ||
f845f2c9 | 2406 | /* Handle automatic advice activation */ |
ab297811 RS |
2407 | Qad_advice_info = intern ("ad-advice-info"); |
2408 | Qad_activate = intern ("ad-activate"); | |
f845f2c9 | 2409 | |
6315e761 RS |
2410 | error_tail = Fcons (Qerror, Qnil); |
2411 | ||
7921925c JB |
2412 | /* ERROR is used as a signaler for random errors for which nothing else is right */ |
2413 | ||
2414 | Fput (Qerror, Qerror_conditions, | |
6315e761 | 2415 | error_tail); |
7921925c JB |
2416 | Fput (Qerror, Qerror_message, |
2417 | build_string ("error")); | |
2418 | ||
2419 | Fput (Qquit, Qerror_conditions, | |
2420 | Fcons (Qquit, Qnil)); | |
2421 | Fput (Qquit, Qerror_message, | |
2422 | build_string ("Quit")); | |
2423 | ||
2424 | Fput (Qwrong_type_argument, Qerror_conditions, | |
6315e761 | 2425 | Fcons (Qwrong_type_argument, error_tail)); |
7921925c JB |
2426 | Fput (Qwrong_type_argument, Qerror_message, |
2427 | build_string ("Wrong type argument")); | |
2428 | ||
2429 | Fput (Qargs_out_of_range, Qerror_conditions, | |
6315e761 | 2430 | Fcons (Qargs_out_of_range, error_tail)); |
7921925c JB |
2431 | Fput (Qargs_out_of_range, Qerror_message, |
2432 | build_string ("Args out of range")); | |
2433 | ||
2434 | Fput (Qvoid_function, Qerror_conditions, | |
6315e761 | 2435 | Fcons (Qvoid_function, error_tail)); |
7921925c JB |
2436 | Fput (Qvoid_function, Qerror_message, |
2437 | build_string ("Symbol's function definition is void")); | |
2438 | ||
ffd56f97 | 2439 | Fput (Qcyclic_function_indirection, Qerror_conditions, |
6315e761 | 2440 | Fcons (Qcyclic_function_indirection, error_tail)); |
ffd56f97 JB |
2441 | Fput (Qcyclic_function_indirection, Qerror_message, |
2442 | build_string ("Symbol's chain of function indirections contains a loop")); | |
2443 | ||
7921925c | 2444 | Fput (Qvoid_variable, Qerror_conditions, |
6315e761 | 2445 | Fcons (Qvoid_variable, error_tail)); |
7921925c JB |
2446 | Fput (Qvoid_variable, Qerror_message, |
2447 | build_string ("Symbol's value as variable is void")); | |
2448 | ||
2449 | Fput (Qsetting_constant, Qerror_conditions, | |
6315e761 | 2450 | Fcons (Qsetting_constant, error_tail)); |
7921925c JB |
2451 | Fput (Qsetting_constant, Qerror_message, |
2452 | build_string ("Attempt to set a constant symbol")); | |
2453 | ||
2454 | Fput (Qinvalid_read_syntax, Qerror_conditions, | |
6315e761 | 2455 | Fcons (Qinvalid_read_syntax, error_tail)); |
7921925c JB |
2456 | Fput (Qinvalid_read_syntax, Qerror_message, |
2457 | build_string ("Invalid read syntax")); | |
2458 | ||
2459 | Fput (Qinvalid_function, Qerror_conditions, | |
6315e761 | 2460 | Fcons (Qinvalid_function, error_tail)); |
7921925c JB |
2461 | Fput (Qinvalid_function, Qerror_message, |
2462 | build_string ("Invalid function")); | |
2463 | ||
2464 | Fput (Qwrong_number_of_arguments, Qerror_conditions, | |
6315e761 | 2465 | Fcons (Qwrong_number_of_arguments, error_tail)); |
7921925c JB |
2466 | Fput (Qwrong_number_of_arguments, Qerror_message, |
2467 | build_string ("Wrong number of arguments")); | |
2468 | ||
2469 | Fput (Qno_catch, Qerror_conditions, | |
6315e761 | 2470 | Fcons (Qno_catch, error_tail)); |
7921925c JB |
2471 | Fput (Qno_catch, Qerror_message, |
2472 | build_string ("No catch for tag")); | |
2473 | ||
2474 | Fput (Qend_of_file, Qerror_conditions, | |
6315e761 | 2475 | Fcons (Qend_of_file, error_tail)); |
7921925c JB |
2476 | Fput (Qend_of_file, Qerror_message, |
2477 | build_string ("End of file during parsing")); | |
2478 | ||
6315e761 | 2479 | arith_tail = Fcons (Qarith_error, error_tail); |
7921925c | 2480 | Fput (Qarith_error, Qerror_conditions, |
6315e761 | 2481 | arith_tail); |
7921925c JB |
2482 | Fput (Qarith_error, Qerror_message, |
2483 | build_string ("Arithmetic error")); | |
2484 | ||
2485 | Fput (Qbeginning_of_buffer, Qerror_conditions, | |
6315e761 | 2486 | Fcons (Qbeginning_of_buffer, error_tail)); |
7921925c JB |
2487 | Fput (Qbeginning_of_buffer, Qerror_message, |
2488 | build_string ("Beginning of buffer")); | |
2489 | ||
2490 | Fput (Qend_of_buffer, Qerror_conditions, | |
6315e761 | 2491 | Fcons (Qend_of_buffer, error_tail)); |
7921925c JB |
2492 | Fput (Qend_of_buffer, Qerror_message, |
2493 | build_string ("End of buffer")); | |
2494 | ||
2495 | Fput (Qbuffer_read_only, Qerror_conditions, | |
6315e761 | 2496 | Fcons (Qbuffer_read_only, error_tail)); |
7921925c JB |
2497 | Fput (Qbuffer_read_only, Qerror_message, |
2498 | build_string ("Buffer is read-only")); | |
2499 | ||
6315e761 RS |
2500 | #ifdef LISP_FLOAT_TYPE |
2501 | Qrange_error = intern ("range-error"); | |
2502 | Qdomain_error = intern ("domain-error"); | |
2503 | Qsingularity_error = intern ("singularity-error"); | |
2504 | Qoverflow_error = intern ("overflow-error"); | |
2505 | Qunderflow_error = intern ("underflow-error"); | |
2506 | ||
2507 | Fput (Qdomain_error, Qerror_conditions, | |
2508 | Fcons (Qdomain_error, arith_tail)); | |
2509 | Fput (Qdomain_error, Qerror_message, | |
2510 | build_string ("Arithmetic domain error")); | |
2511 | ||
2512 | Fput (Qrange_error, Qerror_conditions, | |
2513 | Fcons (Qrange_error, arith_tail)); | |
2514 | Fput (Qrange_error, Qerror_message, | |
2515 | build_string ("Arithmetic range error")); | |
2516 | ||
2517 | Fput (Qsingularity_error, Qerror_conditions, | |
2518 | Fcons (Qsingularity_error, Fcons (Qdomain_error, arith_tail))); | |
2519 | Fput (Qsingularity_error, Qerror_message, | |
2520 | build_string ("Arithmetic singularity error")); | |
2521 | ||
2522 | Fput (Qoverflow_error, Qerror_conditions, | |
2523 | Fcons (Qoverflow_error, Fcons (Qdomain_error, arith_tail))); | |
2524 | Fput (Qoverflow_error, Qerror_message, | |
2525 | build_string ("Arithmetic overflow error")); | |
2526 | ||
2527 | Fput (Qunderflow_error, Qerror_conditions, | |
2528 | Fcons (Qunderflow_error, Fcons (Qdomain_error, arith_tail))); | |
2529 | Fput (Qunderflow_error, Qerror_message, | |
2530 | build_string ("Arithmetic underflow error")); | |
2531 | ||
2532 | staticpro (&Qrange_error); | |
2533 | staticpro (&Qdomain_error); | |
2534 | staticpro (&Qsingularity_error); | |
2535 | staticpro (&Qoverflow_error); | |
2536 | staticpro (&Qunderflow_error); | |
2537 | #endif /* LISP_FLOAT_TYPE */ | |
2538 | ||
7921925c JB |
2539 | staticpro (&Qnil); |
2540 | staticpro (&Qt); | |
2541 | staticpro (&Qquote); | |
2542 | staticpro (&Qlambda); | |
2543 | staticpro (&Qsubr); | |
2544 | staticpro (&Qunbound); | |
2545 | staticpro (&Qerror_conditions); | |
2546 | staticpro (&Qerror_message); | |
2547 | staticpro (&Qtop_level); | |
2548 | ||
2549 | staticpro (&Qerror); | |
2550 | staticpro (&Qquit); | |
2551 | staticpro (&Qwrong_type_argument); | |
2552 | staticpro (&Qargs_out_of_range); | |
2553 | staticpro (&Qvoid_function); | |
ffd56f97 | 2554 | staticpro (&Qcyclic_function_indirection); |
7921925c JB |
2555 | staticpro (&Qvoid_variable); |
2556 | staticpro (&Qsetting_constant); | |
2557 | staticpro (&Qinvalid_read_syntax); | |
2558 | staticpro (&Qwrong_number_of_arguments); | |
2559 | staticpro (&Qinvalid_function); | |
2560 | staticpro (&Qno_catch); | |
2561 | staticpro (&Qend_of_file); | |
2562 | staticpro (&Qarith_error); | |
2563 | staticpro (&Qbeginning_of_buffer); | |
2564 | staticpro (&Qend_of_buffer); | |
2565 | staticpro (&Qbuffer_read_only); | |
638b77e6 | 2566 | staticpro (&Qmark_inactive); |
7921925c JB |
2567 | |
2568 | staticpro (&Qlistp); | |
2569 | staticpro (&Qconsp); | |
2570 | staticpro (&Qsymbolp); | |
2571 | staticpro (&Qintegerp); | |
2572 | staticpro (&Qnatnump); | |
8e86942b | 2573 | staticpro (&Qwholenump); |
7921925c JB |
2574 | staticpro (&Qstringp); |
2575 | staticpro (&Qarrayp); | |
2576 | staticpro (&Qsequencep); | |
2577 | staticpro (&Qbufferp); | |
2578 | staticpro (&Qvectorp); | |
2579 | staticpro (&Qchar_or_string_p); | |
2580 | staticpro (&Qmarkerp); | |
07bd8472 | 2581 | staticpro (&Qbuffer_or_string_p); |
7921925c JB |
2582 | staticpro (&Qinteger_or_marker_p); |
2583 | #ifdef LISP_FLOAT_TYPE | |
2584 | staticpro (&Qfloatp); | |
464f8898 RS |
2585 | staticpro (&Qnumberp); |
2586 | staticpro (&Qnumber_or_marker_p); | |
7921925c | 2587 | #endif /* LISP_FLOAT_TYPE */ |
4d276982 | 2588 | staticpro (&Qchar_table_p); |
7f0edce7 | 2589 | staticpro (&Qvector_or_char_table_p); |
7921925c JB |
2590 | |
2591 | staticpro (&Qboundp); | |
2592 | staticpro (&Qfboundp); | |
2593 | staticpro (&Qcdr); | |
ab297811 RS |
2594 | staticpro (&Qad_advice_info); |
2595 | staticpro (&Qad_activate); | |
7921925c | 2596 | |
39bcc759 RS |
2597 | /* Types that type-of returns. */ |
2598 | Qinteger = intern ("integer"); | |
2599 | Qsymbol = intern ("symbol"); | |
2600 | Qstring = intern ("string"); | |
2601 | Qcons = intern ("cons"); | |
2602 | Qmarker = intern ("marker"); | |
2603 | Qoverlay = intern ("overlay"); | |
2604 | Qfloat = intern ("float"); | |
2605 | Qwindow_configuration = intern ("window-configuration"); | |
2606 | Qprocess = intern ("process"); | |
2607 | Qwindow = intern ("window"); | |
2608 | /* Qsubr = intern ("subr"); */ | |
2609 | Qcompiled_function = intern ("compiled-function"); | |
2610 | Qbuffer = intern ("buffer"); | |
2611 | Qframe = intern ("frame"); | |
2612 | Qvector = intern ("vector"); | |
fc67d5be KH |
2613 | Qchar_table = intern ("char-table"); |
2614 | Qbool_vector = intern ("bool-vector"); | |
39bcc759 RS |
2615 | |
2616 | staticpro (&Qinteger); | |
2617 | staticpro (&Qsymbol); | |
2618 | staticpro (&Qstring); | |
2619 | staticpro (&Qcons); | |
2620 | staticpro (&Qmarker); | |
2621 | staticpro (&Qoverlay); | |
2622 | staticpro (&Qfloat); | |
2623 | staticpro (&Qwindow_configuration); | |
2624 | staticpro (&Qprocess); | |
2625 | staticpro (&Qwindow); | |
2626 | /* staticpro (&Qsubr); */ | |
2627 | staticpro (&Qcompiled_function); | |
2628 | staticpro (&Qbuffer); | |
2629 | staticpro (&Qframe); | |
2630 | staticpro (&Qvector); | |
fc67d5be KH |
2631 | staticpro (&Qchar_table); |
2632 | staticpro (&Qbool_vector); | |
39bcc759 | 2633 | |
7921925c JB |
2634 | defsubr (&Seq); |
2635 | defsubr (&Snull); | |
39bcc759 | 2636 | defsubr (&Stype_of); |
7921925c JB |
2637 | defsubr (&Slistp); |
2638 | defsubr (&Snlistp); | |
2639 | defsubr (&Sconsp); | |
2640 | defsubr (&Satom); | |
2641 | defsubr (&Sintegerp); | |
464f8898 | 2642 | defsubr (&Sinteger_or_marker_p); |
7921925c JB |
2643 | defsubr (&Snumberp); |
2644 | defsubr (&Snumber_or_marker_p); | |
464f8898 RS |
2645 | #ifdef LISP_FLOAT_TYPE |
2646 | defsubr (&Sfloatp); | |
7921925c JB |
2647 | #endif /* LISP_FLOAT_TYPE */ |
2648 | defsubr (&Snatnump); | |
2649 | defsubr (&Ssymbolp); | |
2650 | defsubr (&Sstringp); | |
2651 | defsubr (&Svectorp); | |
4d276982 | 2652 | defsubr (&Schar_table_p); |
7f0edce7 | 2653 | defsubr (&Svector_or_char_table_p); |
4d276982 | 2654 | defsubr (&Sbool_vector_p); |
7921925c JB |
2655 | defsubr (&Sarrayp); |
2656 | defsubr (&Ssequencep); | |
2657 | defsubr (&Sbufferp); | |
2658 | defsubr (&Smarkerp); | |
7921925c | 2659 | defsubr (&Ssubrp); |
dbc4e1c1 | 2660 | defsubr (&Sbyte_code_function_p); |
7921925c JB |
2661 | defsubr (&Schar_or_string_p); |
2662 | defsubr (&Scar); | |
2663 | defsubr (&Scdr); | |
2664 | defsubr (&Scar_safe); | |
2665 | defsubr (&Scdr_safe); | |
2666 | defsubr (&Ssetcar); | |
2667 | defsubr (&Ssetcdr); | |
2668 | defsubr (&Ssymbol_function); | |
ffd56f97 | 2669 | defsubr (&Sindirect_function); |
7921925c JB |
2670 | defsubr (&Ssymbol_plist); |
2671 | defsubr (&Ssymbol_name); | |
2672 | defsubr (&Smakunbound); | |
2673 | defsubr (&Sfmakunbound); | |
2674 | defsubr (&Sboundp); | |
2675 | defsubr (&Sfboundp); | |
2676 | defsubr (&Sfset); | |
80df38a2 | 2677 | defsubr (&Sdefalias); |
7921925c JB |
2678 | defsubr (&Ssetplist); |
2679 | defsubr (&Ssymbol_value); | |
2680 | defsubr (&Sset); | |
2681 | defsubr (&Sdefault_boundp); | |
2682 | defsubr (&Sdefault_value); | |
2683 | defsubr (&Sset_default); | |
2684 | defsubr (&Ssetq_default); | |
2685 | defsubr (&Smake_variable_buffer_local); | |
2686 | defsubr (&Smake_local_variable); | |
2687 | defsubr (&Skill_local_variable); | |
62476adc | 2688 | defsubr (&Slocal_variable_p); |
f4f04cee | 2689 | defsubr (&Slocal_variable_if_set_p); |
7921925c JB |
2690 | defsubr (&Saref); |
2691 | defsubr (&Saset); | |
f2980264 | 2692 | defsubr (&Snumber_to_string); |
25e40a4b | 2693 | defsubr (&Sstring_to_number); |
7921925c JB |
2694 | defsubr (&Seqlsign); |
2695 | defsubr (&Slss); | |
2696 | defsubr (&Sgtr); | |
2697 | defsubr (&Sleq); | |
2698 | defsubr (&Sgeq); | |
2699 | defsubr (&Sneq); | |
2700 | defsubr (&Szerop); | |
2701 | defsubr (&Splus); | |
2702 | defsubr (&Sminus); | |
2703 | defsubr (&Stimes); | |
2704 | defsubr (&Squo); | |
2705 | defsubr (&Srem); | |
44fa9da5 | 2706 | defsubr (&Smod); |
7921925c JB |
2707 | defsubr (&Smax); |
2708 | defsubr (&Smin); | |
2709 | defsubr (&Slogand); | |
2710 | defsubr (&Slogior); | |
2711 | defsubr (&Slogxor); | |
2712 | defsubr (&Slsh); | |
2713 | defsubr (&Sash); | |
2714 | defsubr (&Sadd1); | |
2715 | defsubr (&Ssub1); | |
2716 | defsubr (&Slognot); | |
8e86942b | 2717 | |
c80bd143 | 2718 | XSYMBOL (Qwholenump)->function = XSYMBOL (Qnatnump)->function; |
7921925c JB |
2719 | } |
2720 | ||
a33ef3ab | 2721 | SIGTYPE |
7921925c JB |
2722 | arith_error (signo) |
2723 | int signo; | |
2724 | { | |
fe42a920 | 2725 | #if defined(USG) && !defined(POSIX_SIGNALS) |
7921925c JB |
2726 | /* USG systems forget handlers when they are used; |
2727 | must reestablish each time */ | |
2728 | signal (signo, arith_error); | |
2729 | #endif /* USG */ | |
2730 | #ifdef VMS | |
2731 | /* VMS systems are like USG. */ | |
2732 | signal (signo, arith_error); | |
2733 | #endif /* VMS */ | |
2734 | #ifdef BSD4_1 | |
2735 | sigrelse (SIGFPE); | |
2736 | #else /* not BSD4_1 */ | |
e065a56e | 2737 | sigsetmask (SIGEMPTYMASK); |
7921925c JB |
2738 | #endif /* not BSD4_1 */ |
2739 | ||
2740 | Fsignal (Qarith_error, Qnil); | |
2741 | } | |
2742 | ||
2743 | init_data () | |
2744 | { | |
2745 | /* Don't do this if just dumping out. | |
2746 | We don't want to call `signal' in this case | |
2747 | so that we don't have trouble with dumping | |
2748 | signal-delivering routines in an inconsistent state. */ | |
2749 | #ifndef CANNOT_DUMP | |
2750 | if (!initialized) | |
2751 | return; | |
2752 | #endif /* CANNOT_DUMP */ | |
2753 | signal (SIGFPE, arith_error); | |
7403b5c8 | 2754 | |
7921925c JB |
2755 | #ifdef uts |
2756 | signal (SIGEMT, arith_error); | |
2757 | #endif /* uts */ | |
2758 | } |