Commit | Line | Data |
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7921925c | 1 | /* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter. |
ba318903 | 2 | Copyright (C) 1985-1986, 1988, 1993-1995, 1997-2014 Free Software |
ab422c4d | 3 | Foundation, Inc. |
7921925c JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
7921925c | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
7921925c JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7921925c JB |
19 | |
20 | ||
18160b98 | 21 | #include <config.h> |
dd8daec5 | 22 | #include <stdio.h> |
0ae6bdee | 23 | |
4eed3157 | 24 | #include <byteswap.h> |
595e113b PE |
25 | #include <count-one-bits.h> |
26 | #include <count-trailing-zeros.h> | |
0ae6bdee PE |
27 | #include <intprops.h> |
28 | ||
7921925c | 29 | #include "lisp.h" |
29eab336 | 30 | #include "puresize.h" |
e6e1f521 | 31 | #include "character.h" |
7921925c | 32 | #include "buffer.h" |
077d751f | 33 | #include "keyboard.h" |
b0c2d1c6 | 34 | #include "frame.h" |
a44804c2 | 35 | #include "syssignal.h" |
620c53a6 | 36 | #include "termhooks.h" /* For FRAME_KBOARD reference in y-or-n-p. */ |
4e6f2626 | 37 | #include "font.h" |
61b108cc | 38 | #include "keymap.h" |
fb8e9847 | 39 | |
955cbe7b | 40 | Lisp_Object Qnil, Qt, Qquote, Qlambda, Qunbound; |
73880000 | 41 | Lisp_Object Qnil_, Qt_; |
955cbe7b | 42 | static Lisp_Object Qsubr; |
7921925c | 43 | Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; |
71873e2b | 44 | Lisp_Object Qerror, Quser_error, Qquit, Qargs_out_of_range; |
454e2fb9 | 45 | static Lisp_Object Qwrong_length_argument; |
955cbe7b PE |
46 | static Lisp_Object Qwrong_type_argument; |
47 | Lisp_Object Qvoid_variable, Qvoid_function; | |
48 | static Lisp_Object Qcyclic_function_indirection; | |
49 | static Lisp_Object Qcyclic_variable_indirection; | |
50 | Lisp_Object Qcircular_list; | |
51 | static Lisp_Object Qsetting_constant; | |
52 | Lisp_Object Qinvalid_read_syntax; | |
7921925c | 53 | Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; |
3b8819d6 | 54 | Lisp_Object Qend_of_file, Qarith_error, Qmark_inactive; |
7921925c | 55 | Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
8f9f49d7 | 56 | Lisp_Object Qtext_read_only; |
6b61353c | 57 | |
2f1205e0 | 58 | Lisp_Object Qintegerp, Qwholenump, Qsymbolp, Qlistp, Qconsp; |
955cbe7b | 59 | static Lisp_Object Qnatnump; |
7921925c JB |
60 | Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp; |
61 | Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp; | |
3e0b94e7 | 62 | Lisp_Object Qbool_vector_p; |
955cbe7b PE |
63 | Lisp_Object Qbuffer_or_string_p; |
64 | static Lisp_Object Qkeywordp, Qboundp; | |
65 | Lisp_Object Qfboundp; | |
7f0edce7 | 66 | Lisp_Object Qchar_table_p, Qvector_or_char_table_p; |
39bcc759 | 67 | |
7921925c | 68 | Lisp_Object Qcdr; |
955cbe7b | 69 | static Lisp_Object Qad_advice_info, Qad_activate_internal; |
7921925c | 70 | |
c990426a PE |
71 | static Lisp_Object Qdomain_error, Qsingularity_error, Qunderflow_error; |
72 | Lisp_Object Qrange_error, Qoverflow_error; | |
6315e761 | 73 | |
464f8898 | 74 | Lisp_Object Qfloatp; |
7921925c | 75 | Lisp_Object Qnumberp, Qnumber_or_marker_p; |
7921925c | 76 | |
b52d6985 PE |
77 | Lisp_Object Qinteger, Qsymbol; |
78 | static Lisp_Object Qcons, Qfloat, Qmisc, Qstring, Qvector; | |
e6cba650 | 79 | Lisp_Object Qwindow; |
3ab6e069 DA |
80 | static Lisp_Object Qoverlay, Qwindow_configuration; |
81 | static Lisp_Object Qprocess, Qmarker; | |
82 | static Lisp_Object Qcompiled_function, Qframe; | |
4b66faf3 | 83 | Lisp_Object Qbuffer; |
81dc5de5 | 84 | static Lisp_Object Qchar_table, Qbool_vector, Qhash_table; |
84575e67 PE |
85 | static Lisp_Object Qsubrp; |
86 | static Lisp_Object Qmany, Qunevalled; | |
4e6f2626 | 87 | Lisp_Object Qfont_spec, Qfont_entity, Qfont_object; |
61b108cc | 88 | static Lisp_Object Qdefun; |
39bcc759 | 89 | |
12cc4337 PE |
90 | Lisp_Object Qinteractive_form; |
91 | static Lisp_Object Qdefalias_fset_function; | |
3860280a | 92 | |
ce5b453a | 93 | static void swap_in_symval_forwarding (struct Lisp_Symbol *, struct Lisp_Buffer_Local_Value *); |
d02eeab3 | 94 | |
84575e67 PE |
95 | static bool |
96 | BOOLFWDP (union Lisp_Fwd *a) | |
97 | { | |
98 | return XFWDTYPE (a) == Lisp_Fwd_Bool; | |
99 | } | |
100 | static bool | |
101 | INTFWDP (union Lisp_Fwd *a) | |
102 | { | |
103 | return XFWDTYPE (a) == Lisp_Fwd_Int; | |
104 | } | |
105 | static bool | |
106 | KBOARD_OBJFWDP (union Lisp_Fwd *a) | |
107 | { | |
108 | return XFWDTYPE (a) == Lisp_Fwd_Kboard_Obj; | |
109 | } | |
110 | static bool | |
111 | OBJFWDP (union Lisp_Fwd *a) | |
112 | { | |
113 | return XFWDTYPE (a) == Lisp_Fwd_Obj; | |
114 | } | |
115 | ||
116 | static struct Lisp_Boolfwd * | |
117 | XBOOLFWD (union Lisp_Fwd *a) | |
118 | { | |
119 | eassert (BOOLFWDP (a)); | |
120 | return &a->u_boolfwd; | |
121 | } | |
122 | static struct Lisp_Kboard_Objfwd * | |
123 | XKBOARD_OBJFWD (union Lisp_Fwd *a) | |
124 | { | |
125 | eassert (KBOARD_OBJFWDP (a)); | |
126 | return &a->u_kboard_objfwd; | |
127 | } | |
128 | static struct Lisp_Intfwd * | |
129 | XINTFWD (union Lisp_Fwd *a) | |
130 | { | |
131 | eassert (INTFWDP (a)); | |
132 | return &a->u_intfwd; | |
133 | } | |
134 | static struct Lisp_Objfwd * | |
135 | XOBJFWD (union Lisp_Fwd *a) | |
136 | { | |
137 | eassert (OBJFWDP (a)); | |
138 | return &a->u_objfwd; | |
139 | } | |
140 | ||
141 | static void | |
142 | CHECK_SUBR (Lisp_Object x) | |
143 | { | |
144 | CHECK_TYPE (SUBRP (x), Qsubrp, x); | |
145 | } | |
146 | ||
147 | static void | |
148 | set_blv_found (struct Lisp_Buffer_Local_Value *blv, int found) | |
149 | { | |
150 | eassert (found == !EQ (blv->defcell, blv->valcell)); | |
151 | blv->found = found; | |
152 | } | |
153 | ||
154 | static Lisp_Object | |
155 | blv_value (struct Lisp_Buffer_Local_Value *blv) | |
156 | { | |
157 | return XCDR (blv->valcell); | |
158 | } | |
159 | ||
160 | static void | |
161 | set_blv_value (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val) | |
162 | { | |
163 | XSETCDR (blv->valcell, val); | |
164 | } | |
165 | ||
166 | static void | |
167 | set_blv_where (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val) | |
168 | { | |
169 | blv->where = val; | |
170 | } | |
171 | ||
172 | static void | |
173 | set_blv_defcell (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val) | |
174 | { | |
175 | blv->defcell = val; | |
176 | } | |
177 | ||
178 | static void | |
179 | set_blv_valcell (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val) | |
180 | { | |
181 | blv->valcell = val; | |
182 | } | |
13d95cc0 | 183 | |
454e2fb9 PE |
184 | static _Noreturn void |
185 | wrong_length_argument (Lisp_Object a1, Lisp_Object a2, Lisp_Object a3) | |
186 | { | |
187 | Lisp_Object size1 = make_number (bool_vector_size (a1)); | |
188 | Lisp_Object size2 = make_number (bool_vector_size (a2)); | |
189 | if (NILP (a3)) | |
190 | xsignal2 (Qwrong_length_argument, size1, size2); | |
191 | else | |
192 | xsignal3 (Qwrong_length_argument, size1, size2, | |
193 | make_number (bool_vector_size (a3))); | |
194 | } | |
195 | ||
7921925c | 196 | Lisp_Object |
971de7fb | 197 | wrong_type_argument (register Lisp_Object predicate, register Lisp_Object value) |
7921925c | 198 | { |
2de9f71c SM |
199 | /* If VALUE is not even a valid Lisp object, we'd want to abort here |
200 | where we can get a backtrace showing where it came from. We used | |
201 | to try and do that by checking the tagbits, but nowadays all | |
202 | tagbits are potentially valid. */ | |
203 | /* if ((unsigned int) XTYPE (value) >= Lisp_Type_Limit) | |
1088b922 | 204 | * emacs_abort (); */ |
e1351ff7 | 205 | |
740ef0b5 | 206 | xsignal2 (Qwrong_type_argument, predicate, value); |
7921925c JB |
207 | } |
208 | ||
7921925c | 209 | void |
971de7fb | 210 | args_out_of_range (Lisp_Object a1, Lisp_Object a2) |
7921925c | 211 | { |
740ef0b5 | 212 | xsignal2 (Qargs_out_of_range, a1, a2); |
7921925c JB |
213 | } |
214 | ||
215 | void | |
971de7fb | 216 | args_out_of_range_3 (Lisp_Object a1, Lisp_Object a2, Lisp_Object a3) |
7921925c | 217 | { |
740ef0b5 | 218 | xsignal3 (Qargs_out_of_range, a1, a2, a3); |
7921925c JB |
219 | } |
220 | ||
7921925c | 221 | \f |
61b108cc | 222 | /* Data type predicates. */ |
7921925c JB |
223 | |
224 | DEFUN ("eq", Feq, Seq, 2, 2, 0, | |
8c1a1077 | 225 | doc: /* Return t if the two args are the same Lisp object. */) |
5842a27b | 226 | (Lisp_Object obj1, Lisp_Object obj2) |
7921925c JB |
227 | { |
228 | if (EQ (obj1, obj2)) | |
229 | return Qt; | |
230 | return Qnil; | |
231 | } | |
232 | ||
8c1a1077 PJ |
233 | DEFUN ("null", Fnull, Snull, 1, 1, 0, |
234 | doc: /* Return t if OBJECT is nil. */) | |
5842a27b | 235 | (Lisp_Object object) |
7921925c | 236 | { |
39bcc759 | 237 | if (NILP (object)) |
7921925c JB |
238 | return Qt; |
239 | return Qnil; | |
240 | } | |
241 | ||
39bcc759 | 242 | DEFUN ("type-of", Ftype_of, Stype_of, 1, 1, 0, |
8c1a1077 PJ |
243 | doc: /* Return a symbol representing the type of OBJECT. |
244 | The symbol returned names the object's basic type; | |
245 | for example, (type-of 1) returns `integer'. */) | |
5842a27b | 246 | (Lisp_Object object) |
39bcc759 | 247 | { |
55a1744a BT |
248 | if (INTEGERP (object)) |
249 | return Qinteger; | |
250 | else if (SYMBOLP (object)) | |
251 | return Qsymbol; | |
252 | else if (STRINGP (object)) | |
253 | return Qstring; | |
254 | else if (CONSP (object)) | |
255 | return Qcons; | |
256 | else if (MISCP (object)) | |
39bcc759 | 257 | { |
324a6eef | 258 | switch (XMISCTYPE (object)) |
39bcc759 RS |
259 | { |
260 | case Lisp_Misc_Marker: | |
261 | return Qmarker; | |
262 | case Lisp_Misc_Overlay: | |
263 | return Qoverlay; | |
264 | case Lisp_Misc_Float: | |
265 | return Qfloat; | |
266 | } | |
1088b922 | 267 | emacs_abort (); |
55a1744a BT |
268 | } |
269 | else if (VECTORLIKEP (object)) | |
270 | { | |
8e50cc2d | 271 | if (WINDOW_CONFIGURATIONP (object)) |
39bcc759 | 272 | return Qwindow_configuration; |
8e50cc2d | 273 | if (PROCESSP (object)) |
39bcc759 | 274 | return Qprocess; |
8e50cc2d | 275 | if (WINDOWP (object)) |
39bcc759 | 276 | return Qwindow; |
8e50cc2d | 277 | if (SUBRP (object)) |
39bcc759 | 278 | return Qsubr; |
876c194c SM |
279 | if (COMPILEDP (object)) |
280 | return Qcompiled_function; | |
8e50cc2d | 281 | if (BUFFERP (object)) |
39bcc759 | 282 | return Qbuffer; |
8e50cc2d | 283 | if (CHAR_TABLE_P (object)) |
fc67d5be | 284 | return Qchar_table; |
8e50cc2d | 285 | if (BOOL_VECTOR_P (object)) |
fc67d5be | 286 | return Qbool_vector; |
8e50cc2d | 287 | if (FRAMEP (object)) |
39bcc759 | 288 | return Qframe; |
8e50cc2d | 289 | if (HASH_TABLE_P (object)) |
81dc5de5 | 290 | return Qhash_table; |
4e6f2626 CY |
291 | if (FONT_SPEC_P (object)) |
292 | return Qfont_spec; | |
293 | if (FONT_ENTITY_P (object)) | |
294 | return Qfont_entity; | |
295 | if (FONT_OBJECT_P (object)) | |
296 | return Qfont_object; | |
39bcc759 | 297 | return Qvector; |
39bcc759 | 298 | } |
55a1744a BT |
299 | else if (FLOATP (object)) |
300 | return Qfloat; | |
301 | else | |
302 | return Qt; | |
39bcc759 RS |
303 | } |
304 | ||
8c1a1077 PJ |
305 | DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0, |
306 | doc: /* Return t if OBJECT is a cons cell. */) | |
5842a27b | 307 | (Lisp_Object object) |
7921925c | 308 | { |
39bcc759 | 309 | if (CONSP (object)) |
7921925c JB |
310 | return Qt; |
311 | return Qnil; | |
312 | } | |
313 | ||
25638b07 | 314 | DEFUN ("atom", Fatom, Satom, 1, 1, 0, |
8c1a1077 | 315 | doc: /* Return t if OBJECT is not a cons cell. This includes nil. */) |
5842a27b | 316 | (Lisp_Object object) |
7921925c | 317 | { |
39bcc759 | 318 | if (CONSP (object)) |
7921925c JB |
319 | return Qnil; |
320 | return Qt; | |
321 | } | |
322 | ||
25638b07 | 323 | DEFUN ("listp", Flistp, Slistp, 1, 1, 0, |
4cdcdcc9 LT |
324 | doc: /* Return t if OBJECT is a list, that is, a cons cell or nil. |
325 | Otherwise, return nil. */) | |
5842a27b | 326 | (Lisp_Object object) |
7921925c | 327 | { |
39bcc759 | 328 | if (CONSP (object) || NILP (object)) |
7921925c JB |
329 | return Qt; |
330 | return Qnil; | |
331 | } | |
332 | ||
25638b07 | 333 | DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0, |
8c1a1077 | 334 | doc: /* Return t if OBJECT is not a list. Lists include nil. */) |
5842a27b | 335 | (Lisp_Object object) |
7921925c | 336 | { |
39bcc759 | 337 | if (CONSP (object) || NILP (object)) |
7921925c JB |
338 | return Qnil; |
339 | return Qt; | |
340 | } | |
341 | \f | |
25638b07 | 342 | DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0, |
8c1a1077 | 343 | doc: /* Return t if OBJECT is a symbol. */) |
5842a27b | 344 | (Lisp_Object object) |
7921925c | 345 | { |
39bcc759 | 346 | if (SYMBOLP (object)) |
7921925c JB |
347 | return Qt; |
348 | return Qnil; | |
349 | } | |
350 | ||
42c30833 BT |
351 | static bool |
352 | SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (Lisp_Object sym) | |
353 | { | |
354 | /* Should be initial_obarray */ | |
355 | Lisp_Object tem = Ffind_symbol (SYMBOL_NAME (sym), Vobarray); | |
356 | return (! NILP (scm_c_value_ref (tem, 1)) | |
357 | && (EQ (sym, scm_c_value_ref (tem, 0)))); | |
358 | } | |
359 | ||
cda9b832 DL |
360 | /* Define this in C to avoid unnecessarily consing up the symbol |
361 | name. */ | |
362 | DEFUN ("keywordp", Fkeywordp, Skeywordp, 1, 1, 0, | |
8c1a1077 PJ |
363 | doc: /* Return t if OBJECT is a keyword. |
364 | This means that it is a symbol with a print name beginning with `:' | |
365 | interned in the initial obarray. */) | |
5842a27b | 366 | (Lisp_Object object) |
cda9b832 DL |
367 | { |
368 | if (SYMBOLP (object) | |
d5db4077 | 369 | && SREF (SYMBOL_NAME (object), 0) == ':' |
f35d5bad | 370 | && SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (object)) |
cda9b832 DL |
371 | return Qt; |
372 | return Qnil; | |
373 | } | |
374 | ||
25638b07 | 375 | DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0, |
8c1a1077 | 376 | doc: /* Return t if OBJECT is a vector. */) |
5842a27b | 377 | (Lisp_Object object) |
7921925c | 378 | { |
39bcc759 | 379 | if (VECTORP (object)) |
7921925c JB |
380 | return Qt; |
381 | return Qnil; | |
382 | } | |
383 | ||
25638b07 | 384 | DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0, |
8c1a1077 | 385 | doc: /* Return t if OBJECT is a string. */) |
5842a27b | 386 | (Lisp_Object object) |
7921925c | 387 | { |
39bcc759 | 388 | if (STRINGP (object)) |
7921925c JB |
389 | return Qt; |
390 | return Qnil; | |
391 | } | |
392 | ||
25638b07 | 393 | DEFUN ("multibyte-string-p", Fmultibyte_string_p, Smultibyte_string_p, |
8c1a1077 | 394 | 1, 1, 0, |
3323c263 EZ |
395 | doc: /* Return t if OBJECT is a multibyte string. |
396 | Return nil if OBJECT is either a unibyte string, or not a string. */) | |
5842a27b | 397 | (Lisp_Object object) |
25638b07 RS |
398 | { |
399 | if (STRINGP (object) && STRING_MULTIBYTE (object)) | |
400 | return Qt; | |
401 | return Qnil; | |
402 | } | |
403 | ||
404 | DEFUN ("char-table-p", Fchar_table_p, Schar_table_p, 1, 1, 0, | |
8c1a1077 | 405 | doc: /* Return t if OBJECT is a char-table. */) |
5842a27b | 406 | (Lisp_Object object) |
4d276982 RS |
407 | { |
408 | if (CHAR_TABLE_P (object)) | |
409 | return Qt; | |
410 | return Qnil; | |
411 | } | |
412 | ||
7f0edce7 RS |
413 | DEFUN ("vector-or-char-table-p", Fvector_or_char_table_p, |
414 | Svector_or_char_table_p, 1, 1, 0, | |
8c1a1077 | 415 | doc: /* Return t if OBJECT is a char-table or vector. */) |
5842a27b | 416 | (Lisp_Object object) |
7f0edce7 RS |
417 | { |
418 | if (VECTORP (object) || CHAR_TABLE_P (object)) | |
419 | return Qt; | |
420 | return Qnil; | |
421 | } | |
422 | ||
8c1a1077 PJ |
423 | DEFUN ("bool-vector-p", Fbool_vector_p, Sbool_vector_p, 1, 1, 0, |
424 | doc: /* Return t if OBJECT is a bool-vector. */) | |
5842a27b | 425 | (Lisp_Object object) |
4d276982 RS |
426 | { |
427 | if (BOOL_VECTOR_P (object)) | |
428 | return Qt; | |
429 | return Qnil; | |
430 | } | |
431 | ||
8c1a1077 PJ |
432 | DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0, |
433 | doc: /* Return t if OBJECT is an array (string or vector). */) | |
5842a27b | 434 | (Lisp_Object object) |
7921925c | 435 | { |
0c64a8cd | 436 | if (ARRAYP (object)) |
7921925c JB |
437 | return Qt; |
438 | return Qnil; | |
439 | } | |
440 | ||
441 | DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0, | |
8c1a1077 | 442 | doc: /* Return t if OBJECT is a sequence (list or array). */) |
5842a27b | 443 | (register Lisp_Object object) |
7921925c | 444 | { |
0c64a8cd | 445 | if (CONSP (object) || NILP (object) || ARRAYP (object)) |
7921925c JB |
446 | return Qt; |
447 | return Qnil; | |
448 | } | |
449 | ||
8c1a1077 PJ |
450 | DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0, |
451 | doc: /* Return t if OBJECT is an editor buffer. */) | |
5842a27b | 452 | (Lisp_Object object) |
7921925c | 453 | { |
39bcc759 | 454 | if (BUFFERP (object)) |
7921925c JB |
455 | return Qt; |
456 | return Qnil; | |
457 | } | |
458 | ||
8c1a1077 PJ |
459 | DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0, |
460 | doc: /* Return t if OBJECT is a marker (editor pointer). */) | |
5842a27b | 461 | (Lisp_Object object) |
7921925c | 462 | { |
39bcc759 | 463 | if (MARKERP (object)) |
7921925c JB |
464 | return Qt; |
465 | return Qnil; | |
466 | } | |
467 | ||
8c1a1077 PJ |
468 | DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0, |
469 | doc: /* Return t if OBJECT is a built-in function. */) | |
5842a27b | 470 | (Lisp_Object object) |
7921925c | 471 | { |
39bcc759 | 472 | if (SUBRP (object)) |
7921925c JB |
473 | return Qt; |
474 | return Qnil; | |
475 | } | |
476 | ||
dbc4e1c1 | 477 | DEFUN ("byte-code-function-p", Fbyte_code_function_p, Sbyte_code_function_p, |
8c1a1077 PJ |
478 | 1, 1, 0, |
479 | doc: /* Return t if OBJECT is a byte-compiled function object. */) | |
5842a27b | 480 | (Lisp_Object object) |
7921925c | 481 | { |
39bcc759 | 482 | if (COMPILEDP (object)) |
7921925c JB |
483 | return Qt; |
484 | return Qnil; | |
485 | } | |
486 | ||
0321d75c | 487 | DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0, |
8637f5ee | 488 | doc: /* Return t if OBJECT is a character or a string. */) |
5842a27b | 489 | (register Lisp_Object object) |
7921925c | 490 | { |
cfd70f33 | 491 | if (CHARACTERP (object) || STRINGP (object)) |
7921925c JB |
492 | return Qt; |
493 | return Qnil; | |
494 | } | |
495 | \f | |
8c1a1077 PJ |
496 | DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0, |
497 | doc: /* Return t if OBJECT is an integer. */) | |
5842a27b | 498 | (Lisp_Object object) |
7921925c | 499 | { |
39bcc759 | 500 | if (INTEGERP (object)) |
7921925c JB |
501 | return Qt; |
502 | return Qnil; | |
503 | } | |
504 | ||
464f8898 | 505 | DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p, 1, 1, 0, |
8c1a1077 | 506 | doc: /* Return t if OBJECT is an integer or a marker (editor pointer). */) |
5842a27b | 507 | (register Lisp_Object object) |
7921925c | 508 | { |
39bcc759 | 509 | if (MARKERP (object) || INTEGERP (object)) |
7921925c JB |
510 | return Qt; |
511 | return Qnil; | |
512 | } | |
513 | ||
0321d75c | 514 | DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0, |
8c1a1077 | 515 | doc: /* Return t if OBJECT is a nonnegative integer. */) |
5842a27b | 516 | (Lisp_Object object) |
7921925c | 517 | { |
39bcc759 | 518 | if (NATNUMP (object)) |
7921925c JB |
519 | return Qt; |
520 | return Qnil; | |
521 | } | |
522 | ||
523 | DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0, | |
8c1a1077 | 524 | doc: /* Return t if OBJECT is a number (floating point or integer). */) |
5842a27b | 525 | (Lisp_Object object) |
7921925c | 526 | { |
39bcc759 | 527 | if (NUMBERP (object)) |
7921925c | 528 | return Qt; |
dbc4e1c1 JB |
529 | else |
530 | return Qnil; | |
7921925c JB |
531 | } |
532 | ||
533 | DEFUN ("number-or-marker-p", Fnumber_or_marker_p, | |
534 | Snumber_or_marker_p, 1, 1, 0, | |
8c1a1077 | 535 | doc: /* Return t if OBJECT is a number or a marker. */) |
5842a27b | 536 | (Lisp_Object object) |
7921925c | 537 | { |
39bcc759 | 538 | if (NUMBERP (object) || MARKERP (object)) |
7921925c JB |
539 | return Qt; |
540 | return Qnil; | |
541 | } | |
464f8898 | 542 | |
464f8898 | 543 | DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0, |
8c1a1077 | 544 | doc: /* Return t if OBJECT is a floating point number. */) |
5842a27b | 545 | (Lisp_Object object) |
464f8898 | 546 | { |
39bcc759 | 547 | if (FLOATP (object)) |
464f8898 RS |
548 | return Qt; |
549 | return Qnil; | |
550 | } | |
cc94f3b2 | 551 | |
7921925c | 552 | \f |
32e5c58c | 553 | /* Extract and set components of lists. */ |
7921925c | 554 | |
a7ca3326 | 555 | DEFUN ("car", Fcar, Scar, 1, 1, 0, |
8c1a1077 | 556 | doc: /* Return the car of LIST. If arg is nil, return nil. |
9701c742 LT |
557 | Error if arg is not nil and not a cons cell. See also `car-safe'. |
558 | ||
da46c5be LT |
559 | See Info node `(elisp)Cons Cells' for a discussion of related basic |
560 | Lisp concepts such as car, cdr, cons cell and list. */) | |
5842a27b | 561 | (register Lisp_Object list) |
7921925c | 562 | { |
0c64a8cd | 563 | return CAR (list); |
7921925c JB |
564 | } |
565 | ||
a7ca3326 | 566 | DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0, |
8c1a1077 | 567 | doc: /* Return the car of OBJECT if it is a cons cell, or else nil. */) |
5842a27b | 568 | (Lisp_Object object) |
7921925c | 569 | { |
0c64a8cd | 570 | return CAR_SAFE (object); |
7921925c JB |
571 | } |
572 | ||
a7ca3326 | 573 | DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0, |
8c1a1077 | 574 | doc: /* Return the cdr of LIST. If arg is nil, return nil. |
9701c742 LT |
575 | Error if arg is not nil and not a cons cell. See also `cdr-safe'. |
576 | ||
da46c5be LT |
577 | See Info node `(elisp)Cons Cells' for a discussion of related basic |
578 | Lisp concepts such as cdr, car, cons cell and list. */) | |
5842a27b | 579 | (register Lisp_Object list) |
7921925c | 580 | { |
0c64a8cd | 581 | return CDR (list); |
7921925c JB |
582 | } |
583 | ||
a7ca3326 | 584 | DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0, |
8c1a1077 | 585 | doc: /* Return the cdr of OBJECT if it is a cons cell, or else nil. */) |
5842a27b | 586 | (Lisp_Object object) |
7921925c | 587 | { |
0c64a8cd | 588 | return CDR_SAFE (object); |
7921925c JB |
589 | } |
590 | ||
a7ca3326 | 591 | DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0, |
8c1a1077 | 592 | doc: /* Set the car of CELL to be NEWCAR. Returns NEWCAR. */) |
5842a27b | 593 | (register Lisp_Object cell, Lisp_Object newcar) |
7921925c | 594 | { |
0c64a8cd | 595 | CHECK_CONS (cell); |
7921925c | 596 | CHECK_IMPURE (cell); |
f3fbd155 | 597 | XSETCAR (cell, newcar); |
7921925c JB |
598 | return newcar; |
599 | } | |
600 | ||
a7ca3326 | 601 | DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0, |
8c1a1077 | 602 | doc: /* Set the cdr of CELL to be NEWCDR. Returns NEWCDR. */) |
5842a27b | 603 | (register Lisp_Object cell, Lisp_Object newcdr) |
7921925c | 604 | { |
0c64a8cd | 605 | CHECK_CONS (cell); |
7921925c | 606 | CHECK_IMPURE (cell); |
f3fbd155 | 607 | XSETCDR (cell, newcdr); |
7921925c JB |
608 | return newcdr; |
609 | } | |
610 | \f | |
1ec4b7b2 | 611 | /* Extract and set components of symbols. */ |
7921925c | 612 | |
a7ca3326 | 613 | DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0, |
a9de9f0c GM |
614 | doc: /* Return t if SYMBOL's value is not void. |
615 | Note that if `lexical-binding' is in effect, this refers to the | |
616 | global value outside of any lexical scope. */) | |
5842a27b | 617 | (register Lisp_Object symbol) |
7921925c JB |
618 | { |
619 | Lisp_Object valcontents; | |
ce5b453a | 620 | struct Lisp_Symbol *sym; |
b7826503 | 621 | CHECK_SYMBOL (symbol); |
ce5b453a | 622 | sym = XSYMBOL (symbol); |
7921925c | 623 | |
ce5b453a SM |
624 | start: |
625 | switch (sym->redirect) | |
626 | { | |
627 | case SYMBOL_PLAINVAL: valcontents = SYMBOL_VAL (sym); break; | |
628 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; | |
629 | case SYMBOL_LOCALIZED: | |
630 | { | |
631 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym); | |
632 | if (blv->fwd) | |
633 | /* In set_internal, we un-forward vars when their value is | |
7be68de5 | 634 | set to Qunbound. */ |
ce5b453a SM |
635 | return Qt; |
636 | else | |
637 | { | |
638 | swap_in_symval_forwarding (sym, blv); | |
a04e2c62 | 639 | valcontents = blv_value (blv); |
ce5b453a SM |
640 | } |
641 | break; | |
642 | } | |
643 | case SYMBOL_FORWARDED: | |
644 | /* In set_internal, we un-forward vars when their value is | |
7be68de5 | 645 | set to Qunbound. */ |
ce5b453a | 646 | return Qt; |
1088b922 | 647 | default: emacs_abort (); |
ce5b453a | 648 | } |
7921925c | 649 | |
1bfcade3 | 650 | return (EQ (valcontents, Qunbound) ? Qnil : Qt); |
7921925c JB |
651 | } |
652 | ||
eadf1faa | 653 | /* FIXME: Make it an alias for function-symbol! */ |
a7ca3326 | 654 | DEFUN ("fboundp", Ffboundp, Sfboundp, 1, 1, 0, |
8c1a1077 | 655 | doc: /* Return t if SYMBOL's function definition is not void. */) |
5842a27b | 656 | (register Lisp_Object symbol) |
7921925c | 657 | { |
b7826503 | 658 | CHECK_SYMBOL (symbol); |
1d59fbe3 | 659 | return NILP (SYMBOL_FUNCTION (symbol)) ? Qnil : Qt; |
7921925c JB |
660 | } |
661 | ||
8c1a1077 | 662 | DEFUN ("makunbound", Fmakunbound, Smakunbound, 1, 1, 0, |
bfb96cb7 FP |
663 | doc: /* Make SYMBOL's value be void. |
664 | Return SYMBOL. */) | |
5842a27b | 665 | (register Lisp_Object symbol) |
7921925c | 666 | { |
b7826503 | 667 | CHECK_SYMBOL (symbol); |
64ec26d6 | 668 | if (SYMBOL_CONSTANT_P (symbol)) |
740ef0b5 | 669 | xsignal1 (Qsetting_constant, symbol); |
d9c2a0f2 EN |
670 | Fset (symbol, Qunbound); |
671 | return symbol; | |
7921925c JB |
672 | } |
673 | ||
8c1a1077 | 674 | DEFUN ("fmakunbound", Ffmakunbound, Sfmakunbound, 1, 1, 0, |
eadf1faa | 675 | doc: /* Make SYMBOL's function definition be nil. |
bfb96cb7 | 676 | Return SYMBOL. */) |
5842a27b | 677 | (register Lisp_Object symbol) |
7921925c | 678 | { |
b7826503 | 679 | CHECK_SYMBOL (symbol); |
d9c2a0f2 | 680 | if (NILP (symbol) || EQ (symbol, Qt)) |
740ef0b5 | 681 | xsignal1 (Qsetting_constant, symbol); |
eadf1faa | 682 | set_symbol_function (symbol, Qnil); |
d9c2a0f2 | 683 | return symbol; |
7921925c JB |
684 | } |
685 | ||
a7ca3326 | 686 | DEFUN ("symbol-function", Fsymbol_function, Ssymbol_function, 1, 1, 0, |
0f1d2934 | 687 | doc: /* Return SYMBOL's function definition, or nil if that is void. */) |
5842a27b | 688 | (register Lisp_Object symbol) |
7921925c | 689 | { |
b7826503 | 690 | CHECK_SYMBOL (symbol); |
1d59fbe3 | 691 | return SYMBOL_FUNCTION (symbol); |
7921925c JB |
692 | } |
693 | ||
8c1a1077 PJ |
694 | DEFUN ("symbol-plist", Fsymbol_plist, Ssymbol_plist, 1, 1, 0, |
695 | doc: /* Return SYMBOL's property list. */) | |
5842a27b | 696 | (register Lisp_Object symbol) |
7921925c | 697 | { |
b7826503 | 698 | CHECK_SYMBOL (symbol); |
061cde10 | 699 | return symbol_plist (symbol); |
7921925c JB |
700 | } |
701 | ||
a7ca3326 | 702 | DEFUN ("symbol-name", Fsymbol_name, Ssymbol_name, 1, 1, 0, |
8c1a1077 | 703 | doc: /* Return SYMBOL's name, a string. */) |
5842a27b | 704 | (register Lisp_Object symbol) |
7921925c JB |
705 | { |
706 | register Lisp_Object name; | |
707 | ||
b7826503 | 708 | CHECK_SYMBOL (symbol); |
84023177 | 709 | name = SYMBOL_NAME (symbol); |
7921925c JB |
710 | return name; |
711 | } | |
712 | ||
a7ca3326 | 713 | DEFUN ("fset", Ffset, Sfset, 2, 2, 0, |
8c1a1077 | 714 | doc: /* Set SYMBOL's function definition to DEFINITION, and return DEFINITION. */) |
5842a27b | 715 | (register Lisp_Object symbol, Lisp_Object definition) |
d9c2a0f2 | 716 | { |
764ea377 | 717 | register Lisp_Object function; |
b7826503 | 718 | CHECK_SYMBOL (symbol); |
764ea377 | 719 | |
1d59fbe3 | 720 | function = SYMBOL_FUNCTION (symbol); |
764ea377 | 721 | |
eadf1faa | 722 | if (!NILP (Vautoload_queue) && !NILP (function)) |
764ea377 JB |
723 | Vautoload_queue = Fcons (Fcons (symbol, function), Vautoload_queue); |
724 | ||
32e5c58c | 725 | if (AUTOLOADP (function)) |
764ea377 JB |
726 | Fput (symbol, Qautoload, XCDR (function)); |
727 | ||
01ae0fbf DC |
728 | /* Convert to eassert or remove after GC bug is found. In the |
729 | meantime, check unconditionally, at a slight perf hit. */ | |
730 | if (valid_lisp_object_p (definition) < 1) | |
731 | emacs_abort (); | |
732 | ||
c644523b | 733 | set_symbol_function (symbol, definition); |
32e5c58c | 734 | |
8c0b5540 | 735 | return definition; |
7921925c JB |
736 | } |
737 | ||
d2fde41d | 738 | DEFUN ("defalias", Fdefalias, Sdefalias, 2, 3, 0, |
1053a871 | 739 | doc: /* Set SYMBOL's function definition to DEFINITION. |
96143227 RS |
740 | Associates the function with the current load file, if any. |
741 | The optional third argument DOCSTRING specifies the documentation string | |
742 | for SYMBOL; if it is omitted or nil, SYMBOL uses the documentation string | |
1053a871 | 743 | determined by DEFINITION. |
189e7007 GM |
744 | |
745 | Internally, this normally uses `fset', but if SYMBOL has a | |
746 | `defalias-fset-function' property, the associated value is used instead. | |
747 | ||
1053a871 | 748 | The return value is undefined. */) |
5842a27b | 749 | (register Lisp_Object symbol, Lisp_Object definition, Lisp_Object docstring) |
fc08c367 | 750 | { |
8a658a52 | 751 | CHECK_SYMBOL (symbol); |
61b108cc SM |
752 | if (!NILP (Vpurify_flag) |
753 | /* If `definition' is a keymap, immutable (and copying) is wrong. */ | |
754 | && !KEYMAPP (definition)) | |
755 | definition = Fpurecopy (definition); | |
32e5c58c SM |
756 | |
757 | { | |
758 | bool autoload = AUTOLOADP (definition); | |
759 | if (NILP (Vpurify_flag) || !autoload) | |
760 | { /* Only add autoload entries after dumping, because the ones before are | |
761 | not useful and else we get loads of them from the loaddefs.el. */ | |
762 | ||
1d59fbe3 | 763 | if (AUTOLOADP (SYMBOL_FUNCTION (symbol))) |
32e5c58c SM |
764 | /* Remember that the function was already an autoload. */ |
765 | LOADHIST_ATTACH (Fcons (Qt, symbol)); | |
766 | LOADHIST_ATTACH (Fcons (autoload ? Qautoload : Qdefun, symbol)); | |
767 | } | |
768 | } | |
769 | ||
770 | { /* Handle automatic advice activation. */ | |
771 | Lisp_Object hook = Fget (symbol, Qdefalias_fset_function); | |
772 | if (!NILP (hook)) | |
773 | call2 (hook, symbol, definition); | |
774 | else | |
775 | Ffset (symbol, definition); | |
776 | } | |
777 | ||
d2fde41d SM |
778 | if (!NILP (docstring)) |
779 | Fput (symbol, Qfunction_documentation, docstring); | |
1053a871 SM |
780 | /* We used to return `definition', but now that `defun' and `defmacro' expand |
781 | to a call to `defalias', we return `symbol' for backward compatibility | |
782 | (bug#11686). */ | |
783 | return symbol; | |
fc08c367 RS |
784 | } |
785 | ||
7921925c | 786 | DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0, |
6b61353c | 787 | doc: /* Set SYMBOL's property list to NEWPLIST, and return NEWPLIST. */) |
5842a27b | 788 | (register Lisp_Object symbol, Lisp_Object newplist) |
7921925c | 789 | { |
b7826503 | 790 | CHECK_SYMBOL (symbol); |
c644523b | 791 | set_symbol_plist (symbol, newplist); |
7921925c JB |
792 | return newplist; |
793 | } | |
ffd56f97 | 794 | |
6f0e897f | 795 | DEFUN ("subr-arity", Fsubr_arity, Ssubr_arity, 1, 1, 0, |
8c1a1077 PJ |
796 | doc: /* Return minimum and maximum number of args allowed for SUBR. |
797 | SUBR must be a built-in function. | |
798 | The returned value is a pair (MIN . MAX). MIN is the minimum number | |
799 | of args. MAX is the maximum number or the symbol `many', for a | |
800 | function with `&rest' args, or `unevalled' for a special form. */) | |
5842a27b | 801 | (Lisp_Object subr) |
6f0e897f DL |
802 | { |
803 | short minargs, maxargs; | |
0c64a8cd | 804 | CHECK_SUBR (subr); |
6f0e897f DL |
805 | minargs = XSUBR (subr)->min_args; |
806 | maxargs = XSUBR (subr)->max_args; | |
32e5c58c SM |
807 | return Fcons (make_number (minargs), |
808 | maxargs == MANY ? Qmany | |
809 | : maxargs == UNEVALLED ? Qunevalled | |
810 | : make_number (maxargs)); | |
6f0e897f DL |
811 | } |
812 | ||
0fddae66 SM |
813 | DEFUN ("subr-name", Fsubr_name, Ssubr_name, 1, 1, 0, |
814 | doc: /* Return name of subroutine SUBR. | |
815 | SUBR must be a built-in function. */) | |
5842a27b | 816 | (Lisp_Object subr) |
0fddae66 SM |
817 | { |
818 | const char *name; | |
0c64a8cd | 819 | CHECK_SUBR (subr); |
0fddae66 | 820 | name = XSUBR (subr)->symbol_name; |
f3e92b69 | 821 | return build_string (name); |
0fddae66 SM |
822 | } |
823 | ||
a7ca3326 | 824 | DEFUN ("interactive-form", Finteractive_form, Sinteractive_form, 1, 1, 0, |
6b61353c | 825 | doc: /* Return the interactive form of CMD or nil if none. |
df133612 LT |
826 | If CMD is not a command, the return value is nil. |
827 | Value, if non-nil, is a list \(interactive SPEC). */) | |
5842a27b | 828 | (Lisp_Object cmd) |
cc515226 | 829 | { |
c4f46926 | 830 | Lisp_Object fun = indirect_function (cmd); /* Check cycles. */ |
764ea377 | 831 | |
eadf1faa | 832 | if (NILP (fun)) |
c4f46926 SM |
833 | return Qnil; |
834 | ||
835 | /* Use an `interactive-form' property if present, analogous to the | |
32e5c58c | 836 | function-documentation property. */ |
c4f46926 SM |
837 | fun = cmd; |
838 | while (SYMBOLP (fun)) | |
839 | { | |
3860280a | 840 | Lisp_Object tmp = Fget (fun, Qinteractive_form); |
c4f46926 SM |
841 | if (!NILP (tmp)) |
842 | return tmp; | |
843 | else | |
844 | fun = Fsymbol_function (fun); | |
845 | } | |
6b61353c KH |
846 | |
847 | if (SUBRP (fun)) | |
848 | { | |
eec47d6b | 849 | const char *spec = XSUBR (fun)->intspec; |
8a6d230a MC |
850 | if (spec) |
851 | return list2 (Qinteractive, | |
852 | (*spec != '(') ? build_string (spec) : | |
853 | Fcar (Fread_from_string (build_string (spec), Qnil, Qnil))); | |
6b61353c KH |
854 | } |
855 | else if (COMPILEDP (fun)) | |
856 | { | |
857 | if ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE) | |
858 | return list2 (Qinteractive, AREF (fun, COMPILED_INTERACTIVE)); | |
859 | } | |
32e5c58c SM |
860 | else if (AUTOLOADP (fun)) |
861 | return Finteractive_form (Fautoload_do_load (fun, cmd, Qnil)); | |
6b61353c KH |
862 | else if (CONSP (fun)) |
863 | { | |
864 | Lisp_Object funcar = XCAR (fun); | |
b38b1ec0 | 865 | if (EQ (funcar, Qclosure)) |
23aba0ea SM |
866 | return Fassq (Qinteractive, Fcdr (Fcdr (XCDR (fun)))); |
867 | else if (EQ (funcar, Qlambda)) | |
6b61353c | 868 | return Fassq (Qinteractive, Fcdr (XCDR (fun))); |
6b61353c | 869 | } |
cc515226 GM |
870 | return Qnil; |
871 | } | |
872 | ||
7921925c | 873 | \f |
f35d5bad GM |
874 | /*********************************************************************** |
875 | Getting and Setting Values of Symbols | |
876 | ***********************************************************************/ | |
877 | ||
878 | /* Return the symbol holding SYMBOL's value. Signal | |
879 | `cyclic-variable-indirection' if SYMBOL's chain of variable | |
880 | indirections contains a loop. */ | |
881 | ||
ad97b375 | 882 | struct Lisp_Symbol * |
971de7fb | 883 | indirect_variable (struct Lisp_Symbol *symbol) |
f35d5bad | 884 | { |
ad97b375 | 885 | struct Lisp_Symbol *tortoise, *hare; |
f35d5bad GM |
886 | |
887 | hare = tortoise = symbol; | |
888 | ||
ce5b453a | 889 | while (hare->redirect == SYMBOL_VARALIAS) |
f35d5bad | 890 | { |
ce5b453a SM |
891 | hare = SYMBOL_ALIAS (hare); |
892 | if (hare->redirect != SYMBOL_VARALIAS) | |
f35d5bad | 893 | break; |
bfb96cb7 | 894 | |
ce5b453a SM |
895 | hare = SYMBOL_ALIAS (hare); |
896 | tortoise = SYMBOL_ALIAS (tortoise); | |
f35d5bad | 897 | |
ad97b375 SM |
898 | if (hare == tortoise) |
899 | { | |
900 | Lisp_Object tem; | |
901 | XSETSYMBOL (tem, symbol); | |
902 | xsignal1 (Qcyclic_variable_indirection, tem); | |
903 | } | |
f35d5bad GM |
904 | } |
905 | ||
906 | return hare; | |
907 | } | |
908 | ||
909 | ||
910 | DEFUN ("indirect-variable", Findirect_variable, Sindirect_variable, 1, 1, 0, | |
8c1a1077 | 911 | doc: /* Return the variable at the end of OBJECT's variable chain. |
4abcdac8 CY |
912 | If OBJECT is a symbol, follow its variable indirections (if any), and |
913 | return the variable at the end of the chain of aliases. See Info node | |
914 | `(elisp)Variable Aliases'. | |
915 | ||
916 | If OBJECT is not a symbol, just return it. If there is a loop in the | |
917 | chain of aliases, signal a `cyclic-variable-indirection' error. */) | |
5842a27b | 918 | (Lisp_Object object) |
f35d5bad GM |
919 | { |
920 | if (SYMBOLP (object)) | |
946f9a5b PE |
921 | { |
922 | struct Lisp_Symbol *sym = indirect_variable (XSYMBOL (object)); | |
923 | XSETSYMBOL (object, sym); | |
924 | } | |
f35d5bad GM |
925 | return object; |
926 | } | |
927 | ||
7921925c JB |
928 | |
929 | /* Given the raw contents of a symbol value cell, | |
930 | return the Lisp value of the symbol. | |
931 | This does not handle buffer-local variables; use | |
932 | swap_in_symval_forwarding for that. */ | |
933 | ||
934 | Lisp_Object | |
971de7fb | 935 | do_symval_forwarding (register union Lisp_Fwd *valcontents) |
7921925c JB |
936 | { |
937 | register Lisp_Object val; | |
ce5b453a SM |
938 | switch (XFWDTYPE (valcontents)) |
939 | { | |
940 | case Lisp_Fwd_Int: | |
941 | XSETINT (val, *XINTFWD (valcontents)->intvar); | |
942 | return val; | |
943 | ||
944 | case Lisp_Fwd_Bool: | |
945 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); | |
946 | ||
947 | case Lisp_Fwd_Obj: | |
948 | return *XOBJFWD (valcontents)->objvar; | |
949 | ||
950 | case Lisp_Fwd_Buffer_Obj: | |
4ce60d2e | 951 | return per_buffer_value (current_buffer, |
ce5b453a SM |
952 | XBUFFER_OBJFWD (valcontents)->offset); |
953 | ||
954 | case Lisp_Fwd_Kboard_Obj: | |
955 | /* We used to simply use current_kboard here, but from Lisp | |
a98edce9 | 956 | code, its value is often unexpected. It seems nicer to |
ce5b453a SM |
957 | allow constructions like this to work as intuitively expected: |
958 | ||
959 | (with-selected-frame frame | |
960 | (define-key local-function-map "\eOP" [f1])) | |
961 | ||
962 | On the other hand, this affects the semantics of | |
963 | last-command and real-last-command, and people may rely on | |
964 | that. I took a quick look at the Lisp codebase, and I | |
965 | don't think anything will break. --lorentey */ | |
966 | return *(Lisp_Object *)(XKBOARD_OBJFWD (valcontents)->offset | |
967 | + (char *)FRAME_KBOARD (SELECTED_FRAME ())); | |
1088b922 | 968 | default: emacs_abort (); |
ce5b453a | 969 | } |
7921925c JB |
970 | } |
971 | ||
d9c2a0f2 EN |
972 | /* Store NEWVAL into SYMBOL, where VALCONTENTS is found in the value cell |
973 | of SYMBOL. If SYMBOL is buffer-local, VALCONTENTS should be the | |
7921925c | 974 | buffer-independent contents of the value cell: forwarded just one |
7a283f36 GM |
975 | step past the buffer-localness. |
976 | ||
977 | BUF non-zero means set the value in buffer BUF instead of the | |
978 | current buffer. This only plays a role for per-buffer variables. */ | |
7921925c | 979 | |
ce5b453a | 980 | static void |
971de7fb | 981 | store_symval_forwarding (union Lisp_Fwd *valcontents, register Lisp_Object newval, struct buffer *buf) |
7921925c | 982 | { |
ce5b453a | 983 | switch (XFWDTYPE (valcontents)) |
7921925c | 984 | { |
ce5b453a SM |
985 | case Lisp_Fwd_Int: |
986 | CHECK_NUMBER (newval); | |
987 | *XINTFWD (valcontents)->intvar = XINT (newval); | |
988 | break; | |
aa3830c4 | 989 | |
ce5b453a SM |
990 | case Lisp_Fwd_Bool: |
991 | *XBOOLFWD (valcontents)->boolvar = !NILP (newval); | |
992 | break; | |
aa3830c4 | 993 | |
ce5b453a SM |
994 | case Lisp_Fwd_Obj: |
995 | *XOBJFWD (valcontents)->objvar = newval; | |
aa3830c4 | 996 | |
ce5b453a SM |
997 | /* If this variable is a default for something stored |
998 | in the buffer itself, such as default-fill-column, | |
999 | find the buffers that don't have local values for it | |
1000 | and update them. */ | |
1001 | if (XOBJFWD (valcontents)->objvar > (Lisp_Object *) &buffer_defaults | |
1002 | && XOBJFWD (valcontents)->objvar < (Lisp_Object *) (&buffer_defaults + 1)) | |
46b2ac21 | 1003 | { |
ce5b453a SM |
1004 | int offset = ((char *) XOBJFWD (valcontents)->objvar |
1005 | - (char *) &buffer_defaults); | |
1006 | int idx = PER_BUFFER_IDX (offset); | |
aa3830c4 | 1007 | |
8f3a2c26 | 1008 | Lisp_Object tail, buf; |
aa3830c4 | 1009 | |
ce5b453a SM |
1010 | if (idx <= 0) |
1011 | break; | |
aa3830c4 | 1012 | |
8f3a2c26 | 1013 | FOR_EACH_LIVE_BUFFER (tail, buf) |
6b61353c | 1014 | { |
8f3a2c26 | 1015 | struct buffer *b = XBUFFER (buf); |
6b61353c | 1016 | |
ce5b453a | 1017 | if (! PER_BUFFER_VALUE_P (b, idx)) |
4ce60d2e | 1018 | set_per_buffer_value (b, offset, newval); |
6b61353c | 1019 | } |
ce5b453a SM |
1020 | } |
1021 | break; | |
7403b5c8 | 1022 | |
ce5b453a SM |
1023 | case Lisp_Fwd_Buffer_Obj: |
1024 | { | |
1025 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
58cc0a01 | 1026 | Lisp_Object predicate = XBUFFER_OBJFWD (valcontents)->predicate; |
ce5b453a | 1027 | |
58cc0a01 DA |
1028 | if (!NILP (predicate) && !NILP (newval) |
1029 | && NILP (call1 (predicate, newval))) | |
1030 | wrong_type_argument (predicate, newval); | |
ce5b453a SM |
1031 | |
1032 | if (buf == NULL) | |
1033 | buf = current_buffer; | |
4ce60d2e | 1034 | set_per_buffer_value (buf, offset, newval); |
ce5b453a SM |
1035 | } |
1036 | break; | |
7403b5c8 | 1037 | |
ce5b453a SM |
1038 | case Lisp_Fwd_Kboard_Obj: |
1039 | { | |
1040 | char *base = (char *) FRAME_KBOARD (SELECTED_FRAME ()); | |
1041 | char *p = base + XKBOARD_OBJFWD (valcontents)->offset; | |
1042 | *(Lisp_Object *) p = newval; | |
1043 | } | |
7921925c JB |
1044 | break; |
1045 | ||
7921925c | 1046 | default: |
1088b922 | 1047 | emacs_abort (); /* goto def; */ |
7921925c JB |
1048 | } |
1049 | } | |
1050 | ||
d73e321c DA |
1051 | /* Set up SYMBOL to refer to its global binding. This makes it safe |
1052 | to alter the status of other bindings. BEWARE: this may be called | |
1053 | during the mark phase of GC, where we assume that Lisp_Object slots | |
1054 | of BLV are marked after this function has changed them. */ | |
b0d53add GM |
1055 | |
1056 | void | |
971de7fb | 1057 | swap_in_global_binding (struct Lisp_Symbol *symbol) |
b0d53add | 1058 | { |
ce5b453a | 1059 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (symbol); |
b0d53add GM |
1060 | |
1061 | /* Unload the previously loaded binding. */ | |
ce5b453a | 1062 | if (blv->fwd) |
a04e2c62 | 1063 | set_blv_value (blv, do_symval_forwarding (blv->fwd)); |
bfb96cb7 | 1064 | |
b0d53add | 1065 | /* Select the global binding in the symbol. */ |
a04e2c62 | 1066 | set_blv_valcell (blv, blv->defcell); |
ce5b453a SM |
1067 | if (blv->fwd) |
1068 | store_symval_forwarding (blv->fwd, XCDR (blv->defcell), NULL); | |
b0d53add GM |
1069 | |
1070 | /* Indicate that the global binding is set up now. */ | |
a04e2c62 DA |
1071 | set_blv_where (blv, Qnil); |
1072 | set_blv_found (blv, 0); | |
b0d53add GM |
1073 | } |
1074 | ||
2829d05f | 1075 | /* Set up the buffer-local symbol SYMBOL for validity in the current buffer. |
42e975f0 RS |
1076 | VALCONTENTS is the contents of its value cell, |
1077 | which points to a struct Lisp_Buffer_Local_Value. | |
1078 | ||
1079 | Return the value forwarded one step past the buffer-local stage. | |
1080 | This could be another forwarding pointer. */ | |
7921925c | 1081 | |
ce5b453a | 1082 | static void |
971de7fb | 1083 | swap_in_symval_forwarding (struct Lisp_Symbol *symbol, struct Lisp_Buffer_Local_Value *blv) |
7921925c | 1084 | { |
7921925c | 1085 | register Lisp_Object tem1; |
bfb96cb7 | 1086 | |
ce5b453a SM |
1087 | eassert (blv == SYMBOL_BLV (symbol)); |
1088 | ||
1089 | tem1 = blv->where; | |
7921925c | 1090 | |
42e975f0 | 1091 | if (NILP (tem1) |
ce5b453a SM |
1092 | || (blv->frame_local |
1093 | ? !EQ (selected_frame, tem1) | |
1094 | : current_buffer != XBUFFER (tem1))) | |
7921925c | 1095 | { |
bfb96cb7 | 1096 | |
42e975f0 | 1097 | /* Unload the previously loaded binding. */ |
ce5b453a SM |
1098 | tem1 = blv->valcell; |
1099 | if (blv->fwd) | |
a04e2c62 | 1100 | set_blv_value (blv, do_symval_forwarding (blv->fwd)); |
42e975f0 | 1101 | /* Choose the new binding. */ |
ce5b453a SM |
1102 | { |
1103 | Lisp_Object var; | |
1104 | XSETSYMBOL (var, symbol); | |
1105 | if (blv->frame_local) | |
1106 | { | |
e69b0960 | 1107 | tem1 = assq_no_quit (var, XFRAME (selected_frame)->param_alist); |
a04e2c62 | 1108 | set_blv_where (blv, selected_frame); |
ce5b453a SM |
1109 | } |
1110 | else | |
1111 | { | |
4b4deea2 | 1112 | tem1 = assq_no_quit (var, BVAR (current_buffer, local_var_alist)); |
d73e321c | 1113 | set_blv_where (blv, Fcurrent_buffer ()); |
ce5b453a SM |
1114 | } |
1115 | } | |
1116 | if (!(blv->found = !NILP (tem1))) | |
1117 | tem1 = blv->defcell; | |
b0c2d1c6 | 1118 | |
42e975f0 | 1119 | /* Load the new binding. */ |
a04e2c62 | 1120 | set_blv_valcell (blv, tem1); |
ce5b453a | 1121 | if (blv->fwd) |
a04e2c62 | 1122 | store_symval_forwarding (blv->fwd, blv_value (blv), NULL); |
7921925c | 1123 | } |
7921925c JB |
1124 | } |
1125 | \f | |
14e76af9 JB |
1126 | /* Find the value of a symbol, returning Qunbound if it's not bound. |
1127 | This is helpful for code which just wants to get a variable's value | |
8e6208c5 | 1128 | if it has one, without signaling an error. |
14e76af9 JB |
1129 | Note that it must not be possible to quit |
1130 | within this function. Great care is required for this. */ | |
7921925c | 1131 | |
14e76af9 | 1132 | Lisp_Object |
971de7fb | 1133 | find_symbol_value (Lisp_Object symbol) |
7921925c | 1134 | { |
ce5b453a | 1135 | struct Lisp_Symbol *sym; |
bfb96cb7 | 1136 | |
b7826503 | 1137 | CHECK_SYMBOL (symbol); |
ce5b453a | 1138 | sym = XSYMBOL (symbol); |
7921925c | 1139 | |
ce5b453a SM |
1140 | start: |
1141 | switch (sym->redirect) | |
1142 | { | |
1143 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; | |
1144 | case SYMBOL_PLAINVAL: return SYMBOL_VAL (sym); | |
1145 | case SYMBOL_LOCALIZED: | |
1146 | { | |
1147 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym); | |
1148 | swap_in_symval_forwarding (sym, blv); | |
a04e2c62 | 1149 | return blv->fwd ? do_symval_forwarding (blv->fwd) : blv_value (blv); |
ce5b453a SM |
1150 | } |
1151 | /* FALLTHROUGH */ | |
1152 | case SYMBOL_FORWARDED: | |
1153 | return do_symval_forwarding (SYMBOL_FWD (sym)); | |
1088b922 | 1154 | default: emacs_abort (); |
ce5b453a | 1155 | } |
7921925c JB |
1156 | } |
1157 | ||
a7ca3326 | 1158 | DEFUN ("symbol-value", Fsymbol_value, Ssymbol_value, 1, 1, 0, |
14d27346 GM |
1159 | doc: /* Return SYMBOL's value. Error if that is void. |
1160 | Note that if `lexical-binding' is in effect, this returns the | |
1161 | global value outside of any lexical scope. */) | |
5842a27b | 1162 | (Lisp_Object symbol) |
14e76af9 | 1163 | { |
0671d7c0 | 1164 | Lisp_Object val; |
14e76af9 | 1165 | |
d9c2a0f2 | 1166 | val = find_symbol_value (symbol); |
740ef0b5 | 1167 | if (!EQ (val, Qunbound)) |
14e76af9 | 1168 | return val; |
740ef0b5 KS |
1169 | |
1170 | xsignal1 (Qvoid_variable, symbol); | |
14e76af9 JB |
1171 | } |
1172 | ||
a7ca3326 | 1173 | DEFUN ("set", Fset, Sset, 2, 2, 0, |
8c1a1077 | 1174 | doc: /* Set SYMBOL's value to NEWVAL, and return NEWVAL. */) |
5842a27b | 1175 | (register Lisp_Object symbol, Lisp_Object newval) |
05ef7169 | 1176 | { |
94b612ad | 1177 | set_internal (symbol, newval, Qnil, 0); |
ce5b453a | 1178 | return newval; |
05ef7169 RS |
1179 | } |
1180 | ||
25638b07 | 1181 | /* Store the value NEWVAL into SYMBOL. |
94b612ad SM |
1182 | If buffer/frame-locality is an issue, WHERE specifies which context to use. |
1183 | (nil stands for the current buffer/frame). | |
2829d05f | 1184 | |
de1339b0 | 1185 | If BINDFLAG is false, then if this symbol is supposed to become |
05ef7169 | 1186 | local in every buffer where it is set, then we make it local. |
de1339b0 | 1187 | If BINDFLAG is true, we don't do that. */ |
05ef7169 | 1188 | |
ce5b453a | 1189 | void |
de1339b0 PE |
1190 | set_internal (Lisp_Object symbol, Lisp_Object newval, Lisp_Object where, |
1191 | bool bindflag) | |
7921925c | 1192 | { |
de1339b0 | 1193 | bool voide = EQ (newval, Qunbound); |
ce5b453a SM |
1194 | struct Lisp_Symbol *sym; |
1195 | Lisp_Object tem1; | |
7921925c | 1196 | |
2829d05f | 1197 | /* If restoring in a dead buffer, do nothing. */ |
94b612ad SM |
1198 | /* if (BUFFERP (where) && NILP (XBUFFER (where)->name)) |
1199 | return; */ | |
2829d05f | 1200 | |
b7826503 | 1201 | CHECK_SYMBOL (symbol); |
ce5b453a | 1202 | if (SYMBOL_CONSTANT_P (symbol)) |
7921925c | 1203 | { |
ce5b453a SM |
1204 | if (NILP (Fkeywordp (symbol)) |
1205 | || !EQ (newval, Fsymbol_value (symbol))) | |
1206 | xsignal1 (Qsetting_constant, symbol); | |
1207 | else | |
1208 | /* Allow setting keywords to their own value. */ | |
1209 | return; | |
7921925c | 1210 | } |
42e975f0 | 1211 | |
ce5b453a | 1212 | sym = XSYMBOL (symbol); |
7921925c | 1213 | |
ce5b453a SM |
1214 | start: |
1215 | switch (sym->redirect) | |
1216 | { | |
1217 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; | |
1218 | case SYMBOL_PLAINVAL: SET_SYMBOL_VAL (sym , newval); return; | |
1219 | case SYMBOL_LOCALIZED: | |
1220 | { | |
1221 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym); | |
94b612ad SM |
1222 | if (NILP (where)) |
1223 | { | |
1224 | if (blv->frame_local) | |
1225 | where = selected_frame; | |
1226 | else | |
1227 | XSETBUFFER (where, current_buffer); | |
1228 | } | |
ce5b453a SM |
1229 | /* If the current buffer is not the buffer whose binding is |
1230 | loaded, or if there may be frame-local bindings and the frame | |
1231 | isn't the right one, or if it's a Lisp_Buffer_Local_Value and | |
1232 | the default binding is loaded, the loaded binding may be the | |
1233 | wrong one. */ | |
94b612ad | 1234 | if (!EQ (blv->where, where) |
bfeae2cf | 1235 | /* Also unload a global binding (if the var is local_if_set). */ |
ce5b453a SM |
1236 | || (EQ (blv->valcell, blv->defcell))) |
1237 | { | |
1238 | /* The currently loaded binding is not necessarily valid. | |
1239 | We need to unload it, and choose a new binding. */ | |
1240 | ||
1241 | /* Write out `realvalue' to the old loaded binding. */ | |
1242 | if (blv->fwd) | |
a04e2c62 | 1243 | set_blv_value (blv, do_symval_forwarding (blv->fwd)); |
b0c2d1c6 | 1244 | |
ce5b453a | 1245 | /* Find the new binding. */ |
94b612ad SM |
1246 | XSETSYMBOL (symbol, sym); /* May have changed via aliasing. */ |
1247 | tem1 = Fassq (symbol, | |
1248 | (blv->frame_local | |
e69b0960 | 1249 | ? XFRAME (where)->param_alist |
4b4deea2 | 1250 | : BVAR (XBUFFER (where), local_var_alist))); |
a04e2c62 | 1251 | set_blv_where (blv, where); |
9e677988 | 1252 | blv->found = 1; |
ce5b453a SM |
1253 | |
1254 | if (NILP (tem1)) | |
1255 | { | |
1256 | /* This buffer still sees the default value. */ | |
1257 | ||
1258 | /* If the variable is a Lisp_Some_Buffer_Local_Value, | |
1259 | or if this is `let' rather than `set', | |
1260 | make CURRENT-ALIST-ELEMENT point to itself, | |
1261 | indicating that we're seeing the default value. | |
1262 | Likewise if the variable has been let-bound | |
1263 | in the current buffer. */ | |
1264 | if (bindflag || !blv->local_if_set | |
1265 | || let_shadows_buffer_binding_p (sym)) | |
1266 | { | |
9e677988 | 1267 | blv->found = 0; |
ce5b453a SM |
1268 | tem1 = blv->defcell; |
1269 | } | |
1270 | /* If it's a local_if_set, being set not bound, | |
1271 | and we're not within a let that was made for this buffer, | |
1272 | create a new buffer-local binding for the variable. | |
1273 | That means, give this buffer a new assoc for a local value | |
1274 | and load that binding. */ | |
1275 | else | |
1276 | { | |
1277 | /* local_if_set is only supported for buffer-local | |
1278 | bindings, not for frame-local bindings. */ | |
1279 | eassert (!blv->frame_local); | |
1280 | tem1 = Fcons (symbol, XCDR (blv->defcell)); | |
39eb03f1 PE |
1281 | bset_local_var_alist |
1282 | (XBUFFER (where), | |
1283 | Fcons (tem1, BVAR (XBUFFER (where), local_var_alist))); | |
ce5b453a SM |
1284 | } |
1285 | } | |
1286 | ||
1287 | /* Record which binding is now loaded. */ | |
a04e2c62 | 1288 | set_blv_valcell (blv, tem1); |
ce5b453a | 1289 | } |
b0c2d1c6 | 1290 | |
ce5b453a | 1291 | /* Store the new value in the cons cell. */ |
a04e2c62 | 1292 | set_blv_value (blv, newval); |
d8cafeb5 | 1293 | |
ce5b453a SM |
1294 | if (blv->fwd) |
1295 | { | |
1296 | if (voide) | |
1297 | /* If storing void (making the symbol void), forward only through | |
1298 | buffer-local indicator, not through Lisp_Objfwd, etc. */ | |
1299 | blv->fwd = NULL; | |
1300 | else | |
94b612ad SM |
1301 | store_symval_forwarding (blv->fwd, newval, |
1302 | BUFFERP (where) | |
1303 | ? XBUFFER (where) : current_buffer); | |
ce5b453a SM |
1304 | } |
1305 | break; | |
1306 | } | |
1307 | case SYMBOL_FORWARDED: | |
1308 | { | |
94b612ad SM |
1309 | struct buffer *buf |
1310 | = BUFFERP (where) ? XBUFFER (where) : current_buffer; | |
ce5b453a SM |
1311 | union Lisp_Fwd *innercontents = SYMBOL_FWD (sym); |
1312 | if (BUFFER_OBJFWDP (innercontents)) | |
1313 | { | |
1314 | int offset = XBUFFER_OBJFWD (innercontents)->offset; | |
1315 | int idx = PER_BUFFER_IDX (offset); | |
1316 | if (idx > 0 | |
1317 | && !bindflag | |
1318 | && !let_shadows_buffer_binding_p (sym)) | |
1319 | SET_PER_BUFFER_VALUE_P (buf, idx, 1); | |
1320 | } | |
569c11e3 | 1321 | |
ce5b453a SM |
1322 | if (voide) |
1323 | { /* If storing void (making the symbol void), forward only through | |
1324 | buffer-local indicator, not through Lisp_Objfwd, etc. */ | |
1325 | sym->redirect = SYMBOL_PLAINVAL; | |
1326 | SET_SYMBOL_VAL (sym, newval); | |
1327 | } | |
1328 | else | |
1329 | store_symval_forwarding (/* sym, */ innercontents, newval, buf); | |
1330 | break; | |
1331 | } | |
1088b922 | 1332 | default: emacs_abort (); |
7921925c | 1333 | } |
ce5b453a | 1334 | return; |
7921925c JB |
1335 | } |
1336 | \f | |
1337 | /* Access or set a buffer-local symbol's default value. */ | |
1338 | ||
d9c2a0f2 | 1339 | /* Return the default value of SYMBOL, but don't check for voidness. |
1bfcade3 | 1340 | Return Qunbound if it is void. */ |
7921925c | 1341 | |
112396d6 | 1342 | static Lisp_Object |
971de7fb | 1343 | default_value (Lisp_Object symbol) |
7921925c | 1344 | { |
ce5b453a | 1345 | struct Lisp_Symbol *sym; |
7921925c | 1346 | |
b7826503 | 1347 | CHECK_SYMBOL (symbol); |
ce5b453a | 1348 | sym = XSYMBOL (symbol); |
7921925c | 1349 | |
ce5b453a SM |
1350 | start: |
1351 | switch (sym->redirect) | |
7921925c | 1352 | { |
ce5b453a SM |
1353 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; |
1354 | case SYMBOL_PLAINVAL: return SYMBOL_VAL (sym); | |
1355 | case SYMBOL_LOCALIZED: | |
1356 | { | |
1357 | /* If var is set up for a buffer that lacks a local value for it, | |
1358 | the current value is nominally the default value. | |
1359 | But the `realvalue' slot may be more up to date, since | |
1360 | ordinary setq stores just that slot. So use that. */ | |
1361 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym); | |
1362 | if (blv->fwd && EQ (blv->valcell, blv->defcell)) | |
1363 | return do_symval_forwarding (blv->fwd); | |
1364 | else | |
1365 | return XCDR (blv->defcell); | |
1366 | } | |
1367 | case SYMBOL_FORWARDED: | |
1368 | { | |
1369 | union Lisp_Fwd *valcontents = SYMBOL_FWD (sym); | |
7921925c | 1370 | |
ce5b453a SM |
1371 | /* For a built-in buffer-local variable, get the default value |
1372 | rather than letting do_symval_forwarding get the current value. */ | |
1373 | if (BUFFER_OBJFWDP (valcontents)) | |
1374 | { | |
1375 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
1376 | if (PER_BUFFER_IDX (offset) != 0) | |
4ce60d2e | 1377 | return per_buffer_default (offset); |
ce5b453a SM |
1378 | } |
1379 | ||
1380 | /* For other variables, get the current value. */ | |
1381 | return do_symval_forwarding (valcontents); | |
1382 | } | |
1088b922 | 1383 | default: emacs_abort (); |
7921925c | 1384 | } |
7921925c JB |
1385 | } |
1386 | ||
a7ca3326 | 1387 | DEFUN ("default-boundp", Fdefault_boundp, Sdefault_boundp, 1, 1, 0, |
8c1a1077 PJ |
1388 | doc: /* Return t if SYMBOL has a non-void default value. |
1389 | This is the value that is seen in buffers that do not have their own values | |
1390 | for this variable. */) | |
5842a27b | 1391 | (Lisp_Object symbol) |
7921925c JB |
1392 | { |
1393 | register Lisp_Object value; | |
1394 | ||
d9c2a0f2 | 1395 | value = default_value (symbol); |
1bfcade3 | 1396 | return (EQ (value, Qunbound) ? Qnil : Qt); |
7921925c JB |
1397 | } |
1398 | ||
a7ca3326 | 1399 | DEFUN ("default-value", Fdefault_value, Sdefault_value, 1, 1, 0, |
8c1a1077 PJ |
1400 | doc: /* Return SYMBOL's default value. |
1401 | This is the value that is seen in buffers that do not have their own values | |
1402 | for this variable. The default value is meaningful for variables with | |
1403 | local bindings in certain buffers. */) | |
5842a27b | 1404 | (Lisp_Object symbol) |
7921925c | 1405 | { |
a104f656 | 1406 | Lisp_Object value = default_value (symbol); |
740ef0b5 KS |
1407 | if (!EQ (value, Qunbound)) |
1408 | return value; | |
1409 | ||
1410 | xsignal1 (Qvoid_variable, symbol); | |
7921925c JB |
1411 | } |
1412 | ||
a7ca3326 | 1413 | DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0, |
6e86a75d | 1414 | doc: /* Set SYMBOL's default value to VALUE. SYMBOL and VALUE are evaluated. |
8c1a1077 PJ |
1415 | The default value is seen in buffers that do not have their own values |
1416 | for this variable. */) | |
5842a27b | 1417 | (Lisp_Object symbol, Lisp_Object value) |
7921925c | 1418 | { |
ce5b453a | 1419 | struct Lisp_Symbol *sym; |
7921925c | 1420 | |
b7826503 | 1421 | CHECK_SYMBOL (symbol); |
ce5b453a | 1422 | if (SYMBOL_CONSTANT_P (symbol)) |
7921925c | 1423 | { |
ce5b453a SM |
1424 | if (NILP (Fkeywordp (symbol)) |
1425 | || !EQ (value, Fdefault_value (symbol))) | |
1426 | xsignal1 (Qsetting_constant, symbol); | |
1427 | else | |
1428 | /* Allow setting keywords to their own value. */ | |
1429 | return value; | |
1430 | } | |
1431 | sym = XSYMBOL (symbol); | |
7921925c | 1432 | |
ce5b453a SM |
1433 | start: |
1434 | switch (sym->redirect) | |
1435 | { | |
1436 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; | |
1437 | case SYMBOL_PLAINVAL: return Fset (symbol, value); | |
1438 | case SYMBOL_LOCALIZED: | |
1439 | { | |
1440 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym); | |
984ef137 | 1441 | |
ce5b453a SM |
1442 | /* Store new value into the DEFAULT-VALUE slot. */ |
1443 | XSETCDR (blv->defcell, value); | |
bfb96cb7 | 1444 | |
ce5b453a SM |
1445 | /* If the default binding is now loaded, set the REALVALUE slot too. */ |
1446 | if (blv->fwd && EQ (blv->defcell, blv->valcell)) | |
1447 | store_symval_forwarding (blv->fwd, value, NULL); | |
1448 | return value; | |
1449 | } | |
1450 | case SYMBOL_FORWARDED: | |
1451 | { | |
1452 | union Lisp_Fwd *valcontents = SYMBOL_FWD (sym); | |
7921925c | 1453 | |
ce5b453a SM |
1454 | /* Handle variables like case-fold-search that have special slots |
1455 | in the buffer. | |
1456 | Make them work apparently like Lisp_Buffer_Local_Value variables. */ | |
1457 | if (BUFFER_OBJFWDP (valcontents)) | |
1458 | { | |
1459 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
1460 | int idx = PER_BUFFER_IDX (offset); | |
7921925c | 1461 | |
4ce60d2e | 1462 | set_per_buffer_default (offset, value); |
7921925c | 1463 | |
ce5b453a SM |
1464 | /* If this variable is not always local in all buffers, |
1465 | set it in the buffers that don't nominally have a local value. */ | |
1466 | if (idx > 0) | |
1467 | { | |
1468 | struct buffer *b; | |
7921925c | 1469 | |
52b852c7 | 1470 | FOR_EACH_BUFFER (b) |
ce5b453a | 1471 | if (!PER_BUFFER_VALUE_P (b, idx)) |
4ce60d2e | 1472 | set_per_buffer_value (b, offset, value); |
ce5b453a SM |
1473 | } |
1474 | return value; | |
1475 | } | |
1476 | else | |
1477 | return Fset (symbol, value); | |
1478 | } | |
1088b922 | 1479 | default: emacs_abort (); |
ce5b453a | 1480 | } |
7921925c JB |
1481 | } |
1482 | ||
7a7df7ac | 1483 | DEFUN ("setq-default", Fsetq_default, Ssetq_default, 0, UNEVALLED, 0, |
8c1a1077 PJ |
1484 | doc: /* Set the default value of variable VAR to VALUE. |
1485 | VAR, the variable name, is literal (not evaluated); | |
bfb96cb7 | 1486 | VALUE is an expression: it is evaluated and its value returned. |
8c1a1077 PJ |
1487 | The default value of a variable is seen in buffers |
1488 | that do not have their own values for the variable. | |
1489 | ||
1490 | More generally, you can use multiple variables and values, as in | |
948d2995 JB |
1491 | (setq-default VAR VALUE VAR VALUE...) |
1492 | This sets each VAR's default value to the corresponding VALUE. | |
1493 | The VALUE for the Nth VAR can refer to the new default values | |
1494 | of previous VARs. | |
70e9f399 | 1495 | usage: (setq-default [VAR VALUE]...) */) |
5842a27b | 1496 | (Lisp_Object args) |
7921925c | 1497 | { |
16b0520a | 1498 | Lisp_Object args_left, symbol, val; |
7921925c JB |
1499 | struct gcpro gcpro1; |
1500 | ||
16b0520a | 1501 | args_left = val = args; |
7921925c JB |
1502 | GCPRO1 (args); |
1503 | ||
16b0520a | 1504 | while (CONSP (args_left)) |
7921925c | 1505 | { |
16b0520a | 1506 | val = eval_sub (Fcar (XCDR (args_left))); |
d2fde41d | 1507 | symbol = XCAR (args_left); |
d9c2a0f2 | 1508 | Fset_default (symbol, val); |
d2fde41d | 1509 | args_left = Fcdr (XCDR (args_left)); |
7921925c | 1510 | } |
7921925c JB |
1511 | |
1512 | UNGCPRO; | |
1513 | return val; | |
1514 | } | |
1515 | \f | |
a5ca2b75 JB |
1516 | /* Lisp functions for creating and removing buffer-local variables. */ |
1517 | ||
ce5b453a SM |
1518 | union Lisp_Val_Fwd |
1519 | { | |
1520 | Lisp_Object value; | |
1521 | union Lisp_Fwd *fwd; | |
1522 | }; | |
1523 | ||
1524 | static struct Lisp_Buffer_Local_Value * | |
de1339b0 PE |
1525 | make_blv (struct Lisp_Symbol *sym, bool forwarded, |
1526 | union Lisp_Val_Fwd valcontents) | |
ce5b453a | 1527 | { |
38182d90 | 1528 | struct Lisp_Buffer_Local_Value *blv = xmalloc (sizeof *blv); |
c632dfda JD |
1529 | Lisp_Object symbol; |
1530 | Lisp_Object tem; | |
1531 | ||
1532 | XSETSYMBOL (symbol, sym); | |
1533 | tem = Fcons (symbol, (forwarded | |
1534 | ? do_symval_forwarding (valcontents.fwd) | |
1535 | : valcontents.value)); | |
1536 | ||
ce5b453a SM |
1537 | /* Buffer_Local_Values cannot have as realval a buffer-local |
1538 | or keyboard-local forwarding. */ | |
1539 | eassert (!(forwarded && BUFFER_OBJFWDP (valcontents.fwd))); | |
1540 | eassert (!(forwarded && KBOARD_OBJFWDP (valcontents.fwd))); | |
1541 | blv->fwd = forwarded ? valcontents.fwd : NULL; | |
a04e2c62 | 1542 | set_blv_where (blv, Qnil); |
ce5b453a SM |
1543 | blv->frame_local = 0; |
1544 | blv->local_if_set = 0; | |
a04e2c62 DA |
1545 | set_blv_defcell (blv, tem); |
1546 | set_blv_valcell (blv, tem); | |
1547 | set_blv_found (blv, 0); | |
ce5b453a SM |
1548 | return blv; |
1549 | } | |
1550 | ||
a7ca3326 | 1551 | DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local, |
16a97296 | 1552 | Smake_variable_buffer_local, 1, 1, "vMake Variable Buffer Local: ", |
8c1a1077 PJ |
1553 | doc: /* Make VARIABLE become buffer-local whenever it is set. |
1554 | At any time, the value for the current buffer is in effect, | |
1555 | unless the variable has never been set in this buffer, | |
1556 | in which case the default value is in effect. | |
1557 | Note that binding the variable with `let', or setting it while | |
1558 | a `let'-style binding made in this buffer is in effect, | |
bfb96cb7 | 1559 | does not make the variable buffer-local. Return VARIABLE. |
8c1a1077 | 1560 | |
450533b0 SM |
1561 | This globally affects all uses of this variable, so it belongs together with |
1562 | the variable declaration, rather than with its uses (if you just want to make | |
1563 | a variable local to the current buffer for one particular use, use | |
1564 | `make-local-variable'). Buffer-local bindings are normally cleared | |
1565 | while setting up a new major mode, unless they have a `permanent-local' | |
1566 | property. | |
a9908653 | 1567 | |
8c1a1077 | 1568 | The function `default-value' gets the default value and `set-default' sets it. */) |
5842a27b | 1569 | (register Lisp_Object variable) |
7921925c | 1570 | { |
ad97b375 | 1571 | struct Lisp_Symbol *sym; |
ce5b453a | 1572 | struct Lisp_Buffer_Local_Value *blv = NULL; |
bfe3e0a2 | 1573 | union Lisp_Val_Fwd valcontents IF_LINT (= {LISP_INITIALLY_ZERO}); |
de1339b0 | 1574 | bool forwarded IF_LINT (= 0); |
7921925c | 1575 | |
b7826503 | 1576 | CHECK_SYMBOL (variable); |
ce5b453a | 1577 | sym = XSYMBOL (variable); |
7921925c | 1578 | |
ce5b453a SM |
1579 | start: |
1580 | switch (sym->redirect) | |
fd9440c5 | 1581 | { |
ce5b453a SM |
1582 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; |
1583 | case SYMBOL_PLAINVAL: | |
1584 | forwarded = 0; valcontents.value = SYMBOL_VAL (sym); | |
1585 | if (EQ (valcontents.value, Qunbound)) | |
1586 | valcontents.value = Qnil; | |
1587 | break; | |
1588 | case SYMBOL_LOCALIZED: | |
1589 | blv = SYMBOL_BLV (sym); | |
1590 | if (blv->frame_local) | |
1591 | error ("Symbol %s may not be buffer-local", | |
1592 | SDATA (SYMBOL_NAME (variable))); | |
1593 | break; | |
1594 | case SYMBOL_FORWARDED: | |
1595 | forwarded = 1; valcontents.fwd = SYMBOL_FWD (sym); | |
1596 | if (KBOARD_OBJFWDP (valcontents.fwd)) | |
1597 | error ("Symbol %s may not be buffer-local", | |
1598 | SDATA (SYMBOL_NAME (variable))); | |
1599 | else if (BUFFER_OBJFWDP (valcontents.fwd)) | |
1600 | return variable; | |
1601 | break; | |
1088b922 | 1602 | default: emacs_abort (); |
fd9440c5 | 1603 | } |
ce5b453a SM |
1604 | |
1605 | if (sym->constant) | |
1606 | error ("Symbol %s may not be buffer-local", SDATA (SYMBOL_NAME (variable))); | |
1607 | ||
1608 | if (!blv) | |
7921925c | 1609 | { |
ce5b453a SM |
1610 | blv = make_blv (sym, forwarded, valcontents); |
1611 | sym->redirect = SYMBOL_LOCALIZED; | |
1612 | SET_SYMBOL_BLV (sym, blv); | |
1613 | { | |
1614 | Lisp_Object symbol; | |
1615 | XSETSYMBOL (symbol, sym); /* In case `variable' is aliased. */ | |
1616 | if (let_shadows_global_binding_p (symbol)) | |
8b1e1112 SM |
1617 | message ("Making %s buffer-local while let-bound!", |
1618 | SDATA (SYMBOL_NAME (variable))); | |
ce5b453a | 1619 | } |
7921925c | 1620 | } |
ce5b453a SM |
1621 | |
1622 | blv->local_if_set = 1; | |
d9c2a0f2 | 1623 | return variable; |
7921925c JB |
1624 | } |
1625 | ||
a7ca3326 | 1626 | DEFUN ("make-local-variable", Fmake_local_variable, Smake_local_variable, |
8c1a1077 PJ |
1627 | 1, 1, "vMake Local Variable: ", |
1628 | doc: /* Make VARIABLE have a separate value in the current buffer. | |
1629 | Other buffers will continue to share a common default value. | |
1630 | \(The buffer-local value of VARIABLE starts out as the same value | |
1631 | VARIABLE previously had. If VARIABLE was void, it remains void.\) | |
a9908653 | 1632 | Return VARIABLE. |
8c1a1077 PJ |
1633 | |
1634 | If the variable is already arranged to become local when set, | |
1635 | this function causes a local value to exist for this buffer, | |
1636 | just as setting the variable would do. | |
1637 | ||
1638 | This function returns VARIABLE, and therefore | |
1639 | (set (make-local-variable 'VARIABLE) VALUE-EXP) | |
1640 | works. | |
1641 | ||
a9908653 RS |
1642 | See also `make-variable-buffer-local'. |
1643 | ||
8c1a1077 | 1644 | Do not use `make-local-variable' to make a hook variable buffer-local. |
515f3f25 | 1645 | Instead, use `add-hook' and specify t for the LOCAL argument. */) |
de1339b0 | 1646 | (Lisp_Object variable) |
7921925c | 1647 | { |
de1339b0 PE |
1648 | Lisp_Object tem; |
1649 | bool forwarded IF_LINT (= 0); | |
bfe3e0a2 | 1650 | union Lisp_Val_Fwd valcontents IF_LINT (= {LISP_INITIALLY_ZERO}); |
ad97b375 | 1651 | struct Lisp_Symbol *sym; |
ce5b453a | 1652 | struct Lisp_Buffer_Local_Value *blv = NULL; |
7921925c | 1653 | |
b7826503 | 1654 | CHECK_SYMBOL (variable); |
ce5b453a | 1655 | sym = XSYMBOL (variable); |
7921925c | 1656 | |
ce5b453a SM |
1657 | start: |
1658 | switch (sym->redirect) | |
1659 | { | |
1660 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; | |
1661 | case SYMBOL_PLAINVAL: | |
1662 | forwarded = 0; valcontents.value = SYMBOL_VAL (sym); break; | |
1663 | case SYMBOL_LOCALIZED: | |
1664 | blv = SYMBOL_BLV (sym); | |
1665 | if (blv->frame_local) | |
1666 | error ("Symbol %s may not be buffer-local", | |
1667 | SDATA (SYMBOL_NAME (variable))); | |
1668 | break; | |
1669 | case SYMBOL_FORWARDED: | |
1670 | forwarded = 1; valcontents.fwd = SYMBOL_FWD (sym); | |
1671 | if (KBOARD_OBJFWDP (valcontents.fwd)) | |
1672 | error ("Symbol %s may not be buffer-local", | |
1673 | SDATA (SYMBOL_NAME (variable))); | |
1674 | break; | |
1088b922 | 1675 | default: emacs_abort (); |
ce5b453a SM |
1676 | } |
1677 | ||
1678 | if (sym->constant) | |
8b1e1112 SM |
1679 | error ("Symbol %s may not be buffer-local", |
1680 | SDATA (SYMBOL_NAME (variable))); | |
7921925c | 1681 | |
ce5b453a SM |
1682 | if (blv ? blv->local_if_set |
1683 | : (forwarded && BUFFER_OBJFWDP (valcontents.fwd))) | |
7921925c | 1684 | { |
d9c2a0f2 | 1685 | tem = Fboundp (variable); |
7921925c JB |
1686 | /* Make sure the symbol has a local value in this particular buffer, |
1687 | by setting it to the same value it already has. */ | |
d9c2a0f2 EN |
1688 | Fset (variable, (EQ (tem, Qt) ? Fsymbol_value (variable) : Qunbound)); |
1689 | return variable; | |
7921925c | 1690 | } |
ce5b453a | 1691 | if (!blv) |
7921925c | 1692 | { |
ce5b453a SM |
1693 | blv = make_blv (sym, forwarded, valcontents); |
1694 | sym->redirect = SYMBOL_LOCALIZED; | |
1695 | SET_SYMBOL_BLV (sym, blv); | |
1696 | { | |
1697 | Lisp_Object symbol; | |
1698 | XSETSYMBOL (symbol, sym); /* In case `variable' is aliased. */ | |
1699 | if (let_shadows_global_binding_p (symbol)) | |
8b1e1112 SM |
1700 | message ("Making %s local to %s while let-bound!", |
1701 | SDATA (SYMBOL_NAME (variable)), | |
4b4deea2 | 1702 | SDATA (BVAR (current_buffer, name))); |
ce5b453a | 1703 | } |
7921925c | 1704 | } |
ce5b453a | 1705 | |
42e975f0 | 1706 | /* Make sure this buffer has its own value of symbol. */ |
ce5b453a | 1707 | XSETSYMBOL (variable, sym); /* Update in case of aliasing. */ |
4b4deea2 | 1708 | tem = Fassq (variable, BVAR (current_buffer, local_var_alist)); |
a33ef3ab | 1709 | if (NILP (tem)) |
7921925c | 1710 | { |
ce5b453a SM |
1711 | if (let_shadows_buffer_binding_p (sym)) |
1712 | message ("Making %s buffer-local while locally let-bound!", | |
1713 | SDATA (SYMBOL_NAME (variable))); | |
1714 | ||
a5d004a1 RS |
1715 | /* Swap out any local binding for some other buffer, and make |
1716 | sure the current value is permanently recorded, if it's the | |
1717 | default value. */ | |
d9c2a0f2 | 1718 | find_symbol_value (variable); |
a5d004a1 | 1719 | |
39eb03f1 PE |
1720 | bset_local_var_alist |
1721 | (current_buffer, | |
1722 | Fcons (Fcons (variable, XCDR (blv->defcell)), | |
1723 | BVAR (current_buffer, local_var_alist))); | |
7921925c JB |
1724 | |
1725 | /* Make sure symbol does not think it is set up for this buffer; | |
42e975f0 | 1726 | force it to look once again for this buffer's value. */ |
ce5b453a | 1727 | if (current_buffer == XBUFFER (blv->where)) |
a04e2c62 DA |
1728 | set_blv_where (blv, Qnil); |
1729 | set_blv_found (blv, 0); | |
7921925c | 1730 | } |
a5ca2b75 | 1731 | |
42e975f0 RS |
1732 | /* If the symbol forwards into a C variable, then load the binding |
1733 | for this buffer now. If C code modifies the variable before we | |
1734 | load the binding in, then that new value will clobber the default | |
1735 | binding the next time we unload it. */ | |
ce5b453a SM |
1736 | if (blv->fwd) |
1737 | swap_in_symval_forwarding (sym, blv); | |
a5ca2b75 | 1738 | |
d9c2a0f2 | 1739 | return variable; |
7921925c JB |
1740 | } |
1741 | ||
1742 | DEFUN ("kill-local-variable", Fkill_local_variable, Skill_local_variable, | |
8c1a1077 PJ |
1743 | 1, 1, "vKill Local Variable: ", |
1744 | doc: /* Make VARIABLE no longer have a separate value in the current buffer. | |
bfb96cb7 | 1745 | From now on the default value will apply in this buffer. Return VARIABLE. */) |
5842a27b | 1746 | (register Lisp_Object variable) |
7921925c | 1747 | { |
ce5b453a SM |
1748 | register Lisp_Object tem; |
1749 | struct Lisp_Buffer_Local_Value *blv; | |
ad97b375 | 1750 | struct Lisp_Symbol *sym; |
7921925c | 1751 | |
b7826503 | 1752 | CHECK_SYMBOL (variable); |
ce5b453a | 1753 | sym = XSYMBOL (variable); |
7921925c | 1754 | |
ce5b453a SM |
1755 | start: |
1756 | switch (sym->redirect) | |
7921925c | 1757 | { |
ce5b453a SM |
1758 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; |
1759 | case SYMBOL_PLAINVAL: return variable; | |
1760 | case SYMBOL_FORWARDED: | |
1761 | { | |
1762 | union Lisp_Fwd *valcontents = SYMBOL_FWD (sym); | |
1763 | if (BUFFER_OBJFWDP (valcontents)) | |
1764 | { | |
1765 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
1766 | int idx = PER_BUFFER_IDX (offset); | |
1767 | ||
1768 | if (idx > 0) | |
1769 | { | |
1770 | SET_PER_BUFFER_VALUE_P (current_buffer, idx, 0); | |
4ce60d2e DA |
1771 | set_per_buffer_value (current_buffer, offset, |
1772 | per_buffer_default (offset)); | |
ce5b453a SM |
1773 | } |
1774 | } | |
1775 | return variable; | |
1776 | } | |
1777 | case SYMBOL_LOCALIZED: | |
1778 | blv = SYMBOL_BLV (sym); | |
1779 | if (blv->frame_local) | |
1780 | return variable; | |
1781 | break; | |
1088b922 | 1782 | default: emacs_abort (); |
7921925c JB |
1783 | } |
1784 | ||
42e975f0 | 1785 | /* Get rid of this buffer's alist element, if any. */ |
ad97b375 | 1786 | XSETSYMBOL (variable, sym); /* Propagate variable indirection. */ |
4b4deea2 | 1787 | tem = Fassq (variable, BVAR (current_buffer, local_var_alist)); |
a33ef3ab | 1788 | if (!NILP (tem)) |
39eb03f1 PE |
1789 | bset_local_var_alist |
1790 | (current_buffer, | |
1791 | Fdelq (tem, BVAR (current_buffer, local_var_alist))); | |
7921925c | 1792 | |
42e975f0 RS |
1793 | /* If the symbol is set up with the current buffer's binding |
1794 | loaded, recompute its value. We have to do it now, or else | |
1795 | forwarded objects won't work right. */ | |
7921925c | 1796 | { |
ce5b453a SM |
1797 | Lisp_Object buf; XSETBUFFER (buf, current_buffer); |
1798 | if (EQ (buf, blv->where)) | |
79c83e03 | 1799 | { |
a04e2c62 | 1800 | set_blv_where (blv, Qnil); |
9e677988 | 1801 | blv->found = 0; |
978dd578 | 1802 | find_symbol_value (variable); |
79c83e03 | 1803 | } |
7921925c JB |
1804 | } |
1805 | ||
d9c2a0f2 | 1806 | return variable; |
7921925c | 1807 | } |
62476adc | 1808 | |
b0c2d1c6 RS |
1809 | /* Lisp functions for creating and removing buffer-local variables. */ |
1810 | ||
ab795c65 GM |
1811 | /* Obsolete since 22.2. NB adjust doc of modify-frame-parameters |
1812 | when/if this is removed. */ | |
1813 | ||
b0c2d1c6 | 1814 | DEFUN ("make-variable-frame-local", Fmake_variable_frame_local, Smake_variable_frame_local, |
8c1a1077 PJ |
1815 | 1, 1, "vMake Variable Frame Local: ", |
1816 | doc: /* Enable VARIABLE to have frame-local bindings. | |
4d4d36b1 RS |
1817 | This does not create any frame-local bindings for VARIABLE, |
1818 | it just makes them possible. | |
1819 | ||
1820 | A frame-local binding is actually a frame parameter value. | |
1821 | If a frame F has a value for the frame parameter named VARIABLE, | |
1822 | that also acts as a frame-local binding for VARIABLE in F-- | |
1823 | provided this function has been called to enable VARIABLE | |
1824 | to have frame-local bindings at all. | |
1825 | ||
1826 | The only way to create a frame-local binding for VARIABLE in a frame | |
1827 | is to set the VARIABLE frame parameter of that frame. See | |
1828 | `modify-frame-parameters' for how to set frame parameters. | |
1829 | ||
a02a1384 GM |
1830 | Note that since Emacs 23.1, variables cannot be both buffer-local and |
1831 | frame-local any more (buffer-local bindings used to take precedence over | |
1832 | frame-local bindings). */) | |
de1339b0 | 1833 | (Lisp_Object variable) |
b0c2d1c6 | 1834 | { |
de1339b0 | 1835 | bool forwarded; |
ce5b453a | 1836 | union Lisp_Val_Fwd valcontents; |
ad97b375 | 1837 | struct Lisp_Symbol *sym; |
ce5b453a | 1838 | struct Lisp_Buffer_Local_Value *blv = NULL; |
b0c2d1c6 | 1839 | |
b7826503 | 1840 | CHECK_SYMBOL (variable); |
ce5b453a | 1841 | sym = XSYMBOL (variable); |
b0c2d1c6 | 1842 | |
ce5b453a SM |
1843 | start: |
1844 | switch (sym->redirect) | |
42e975f0 | 1845 | { |
ce5b453a SM |
1846 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; |
1847 | case SYMBOL_PLAINVAL: | |
1848 | forwarded = 0; valcontents.value = SYMBOL_VAL (sym); | |
1849 | if (EQ (valcontents.value, Qunbound)) | |
1850 | valcontents.value = Qnil; | |
1851 | break; | |
1852 | case SYMBOL_LOCALIZED: | |
1853 | if (SYMBOL_BLV (sym)->frame_local) | |
1854 | return variable; | |
1855 | else | |
1856 | error ("Symbol %s may not be frame-local", | |
1857 | SDATA (SYMBOL_NAME (variable))); | |
1858 | case SYMBOL_FORWARDED: | |
1859 | forwarded = 1; valcontents.fwd = SYMBOL_FWD (sym); | |
1860 | if (KBOARD_OBJFWDP (valcontents.fwd) || BUFFER_OBJFWDP (valcontents.fwd)) | |
1861 | error ("Symbol %s may not be frame-local", | |
1862 | SDATA (SYMBOL_NAME (variable))); | |
1863 | break; | |
1088b922 | 1864 | default: emacs_abort (); |
42e975f0 | 1865 | } |
b0c2d1c6 | 1866 | |
ce5b453a SM |
1867 | if (sym->constant) |
1868 | error ("Symbol %s may not be frame-local", SDATA (SYMBOL_NAME (variable))); | |
1869 | ||
1870 | blv = make_blv (sym, forwarded, valcontents); | |
1871 | blv->frame_local = 1; | |
1872 | sym->redirect = SYMBOL_LOCALIZED; | |
1873 | SET_SYMBOL_BLV (sym, blv); | |
8b1e1112 SM |
1874 | { |
1875 | Lisp_Object symbol; | |
1876 | XSETSYMBOL (symbol, sym); /* In case `variable' is aliased. */ | |
1877 | if (let_shadows_global_binding_p (symbol)) | |
1878 | message ("Making %s frame-local while let-bound!", | |
1879 | SDATA (SYMBOL_NAME (variable))); | |
1880 | } | |
b0c2d1c6 RS |
1881 | return variable; |
1882 | } | |
1883 | ||
a7ca3326 | 1884 | DEFUN ("local-variable-p", Flocal_variable_p, Slocal_variable_p, |
8c1a1077 PJ |
1885 | 1, 2, 0, |
1886 | doc: /* Non-nil if VARIABLE has a local binding in buffer BUFFER. | |
1887 | BUFFER defaults to the current buffer. */) | |
5842a27b | 1888 | (register Lisp_Object variable, Lisp_Object buffer) |
62476adc | 1889 | { |
c48ead86 | 1890 | register struct buffer *buf; |
ad97b375 | 1891 | struct Lisp_Symbol *sym; |
c48ead86 KH |
1892 | |
1893 | if (NILP (buffer)) | |
1894 | buf = current_buffer; | |
1895 | else | |
1896 | { | |
b7826503 | 1897 | CHECK_BUFFER (buffer); |
c48ead86 KH |
1898 | buf = XBUFFER (buffer); |
1899 | } | |
62476adc | 1900 | |
b7826503 | 1901 | CHECK_SYMBOL (variable); |
ce5b453a | 1902 | sym = XSYMBOL (variable); |
be95bee9 | 1903 | |
ce5b453a SM |
1904 | start: |
1905 | switch (sym->redirect) | |
c48ead86 | 1906 | { |
ce5b453a SM |
1907 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; |
1908 | case SYMBOL_PLAINVAL: return Qnil; | |
1909 | case SYMBOL_LOCALIZED: | |
1910 | { | |
1911 | Lisp_Object tail, elt, tmp; | |
1912 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym); | |
1913 | XSETBUFFER (tmp, buf); | |
8d1d9587 | 1914 | XSETSYMBOL (variable, sym); /* Update in case of aliasing. */ |
aa3830c4 | 1915 | |
2f592f95 SM |
1916 | if (EQ (blv->where, tmp)) /* The binding is already loaded. */ |
1917 | return blv_found (blv) ? Qt : Qnil; | |
1918 | else | |
1919 | for (tail = BVAR (buf, local_var_alist); CONSP (tail); tail = XCDR (tail)) | |
1920 | { | |
1921 | elt = XCAR (tail); | |
1922 | if (EQ (variable, XCAR (elt))) | |
1923 | { | |
1924 | eassert (!blv->frame_local); | |
1925 | return Qt; | |
1926 | } | |
1927 | } | |
ce5b453a SM |
1928 | return Qnil; |
1929 | } | |
1930 | case SYMBOL_FORWARDED: | |
1931 | { | |
1932 | union Lisp_Fwd *valcontents = SYMBOL_FWD (sym); | |
1933 | if (BUFFER_OBJFWDP (valcontents)) | |
1934 | { | |
1935 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
1936 | int idx = PER_BUFFER_IDX (offset); | |
1937 | if (idx == -1 || PER_BUFFER_VALUE_P (buf, idx)) | |
1938 | return Qt; | |
1939 | } | |
1940 | return Qnil; | |
1941 | } | |
1088b922 | 1942 | default: emacs_abort (); |
c48ead86 | 1943 | } |
62476adc | 1944 | } |
f4f04cee RS |
1945 | |
1946 | DEFUN ("local-variable-if-set-p", Flocal_variable_if_set_p, Slocal_variable_if_set_p, | |
8c1a1077 | 1947 | 1, 2, 0, |
1a5432bc CY |
1948 | doc: /* Non-nil if VARIABLE is local in buffer BUFFER when set there. |
1949 | BUFFER defaults to the current buffer. | |
1950 | ||
1951 | More precisely, return non-nil if either VARIABLE already has a local | |
1952 | value in BUFFER, or if VARIABLE is automatically buffer-local (see | |
1953 | `make-variable-buffer-local'). */) | |
5842a27b | 1954 | (register Lisp_Object variable, Lisp_Object buffer) |
f4f04cee | 1955 | { |
ad97b375 | 1956 | struct Lisp_Symbol *sym; |
f4f04cee | 1957 | |
b7826503 | 1958 | CHECK_SYMBOL (variable); |
ce5b453a | 1959 | sym = XSYMBOL (variable); |
f4f04cee | 1960 | |
ce5b453a SM |
1961 | start: |
1962 | switch (sym->redirect) | |
f4f04cee | 1963 | { |
ce5b453a SM |
1964 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; |
1965 | case SYMBOL_PLAINVAL: return Qnil; | |
1966 | case SYMBOL_LOCALIZED: | |
1967 | { | |
1968 | struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym); | |
1969 | if (blv->local_if_set) | |
1970 | return Qt; | |
1971 | XSETSYMBOL (variable, sym); /* Update in case of aliasing. */ | |
1972 | return Flocal_variable_p (variable, buffer); | |
1973 | } | |
1974 | case SYMBOL_FORWARDED: | |
1975 | /* All BUFFER_OBJFWD slots become local if they are set. */ | |
1976 | return (BUFFER_OBJFWDP (SYMBOL_FWD (sym)) ? Qt : Qnil); | |
1088b922 | 1977 | default: emacs_abort (); |
f4f04cee | 1978 | } |
f4f04cee | 1979 | } |
6b61353c KH |
1980 | |
1981 | DEFUN ("variable-binding-locus", Fvariable_binding_locus, Svariable_binding_locus, | |
1982 | 1, 1, 0, | |
1983 | doc: /* Return a value indicating where VARIABLE's current binding comes from. | |
1984 | If the current binding is buffer-local, the value is the current buffer. | |
1985 | If the current binding is frame-local, the value is the selected frame. | |
1986 | If the current binding is global (the default), the value is nil. */) | |
5842a27b | 1987 | (register Lisp_Object variable) |
6b61353c | 1988 | { |
ad97b375 | 1989 | struct Lisp_Symbol *sym; |
6b61353c KH |
1990 | |
1991 | CHECK_SYMBOL (variable); | |
ce5b453a | 1992 | sym = XSYMBOL (variable); |
6b61353c KH |
1993 | |
1994 | /* Make sure the current binding is actually swapped in. */ | |
1995 | find_symbol_value (variable); | |
1996 | ||
ce5b453a SM |
1997 | start: |
1998 | switch (sym->redirect) | |
6b61353c | 1999 | { |
ce5b453a SM |
2000 | case SYMBOL_VARALIAS: sym = indirect_variable (sym); goto start; |
2001 | case SYMBOL_PLAINVAL: return Qnil; | |
2002 | case SYMBOL_FORWARDED: | |
2003 | { | |
2004 | union Lisp_Fwd *valcontents = SYMBOL_FWD (sym); | |
2005 | if (KBOARD_OBJFWDP (valcontents)) | |
d2a95ffb | 2006 | return Fframe_terminal (selected_frame); |
ce5b453a SM |
2007 | else if (!BUFFER_OBJFWDP (valcontents)) |
2008 | return Qnil; | |
2009 | } | |
2010 | /* FALLTHROUGH */ | |
2011 | case SYMBOL_LOCALIZED: | |
6b61353c KH |
2012 | /* For a local variable, record both the symbol and which |
2013 | buffer's or frame's value we are saving. */ | |
2014 | if (!NILP (Flocal_variable_p (variable, Qnil))) | |
2015 | return Fcurrent_buffer (); | |
ce5b453a | 2016 | else if (sym->redirect == SYMBOL_LOCALIZED |
a04e2c62 | 2017 | && blv_found (SYMBOL_BLV (sym))) |
ce5b453a SM |
2018 | return SYMBOL_BLV (sym)->where; |
2019 | else | |
2020 | return Qnil; | |
1088b922 | 2021 | default: emacs_abort (); |
6b61353c | 2022 | } |
6b61353c | 2023 | } |
2a42d440 | 2024 | |
c40bb1ba | 2025 | /* This code is disabled now that we use the selected frame to return |
7be68de5 | 2026 | keyboard-local-values. */ |
c40bb1ba | 2027 | #if 0 |
f57e2426 | 2028 | extern struct terminal *get_terminal (Lisp_Object display, int); |
2a42d440 | 2029 | |
a7ca3326 | 2030 | DEFUN ("terminal-local-value", Fterminal_local_value, |
16a97296 | 2031 | Sterminal_local_value, 2, 2, 0, |
6ed8eeff | 2032 | doc: /* Return the terminal-local value of SYMBOL on TERMINAL. |
2a42d440 KL |
2033 | If SYMBOL is not a terminal-local variable, then return its normal |
2034 | value, like `symbol-value'. | |
2035 | ||
708e05dc | 2036 | TERMINAL may be a terminal object, a frame, or nil (meaning the |
6ed8eeff | 2037 | selected frame's terminal device). */) |
5842a27b | 2038 | (Lisp_Object symbol, Lisp_Object terminal) |
2a42d440 KL |
2039 | { |
2040 | Lisp_Object result; | |
6ed8eeff KL |
2041 | struct terminal *t = get_terminal (terminal, 1); |
2042 | push_kboard (t->kboard); | |
2a42d440 | 2043 | result = Fsymbol_value (symbol); |
256c9c3a | 2044 | pop_kboard (); |
2a42d440 KL |
2045 | return result; |
2046 | } | |
2047 | ||
a7ca3326 | 2048 | DEFUN ("set-terminal-local-value", Fset_terminal_local_value, |
16a97296 | 2049 | Sset_terminal_local_value, 3, 3, 0, |
6ed8eeff | 2050 | doc: /* Set the terminal-local binding of SYMBOL on TERMINAL to VALUE. |
2a42d440 | 2051 | If VARIABLE is not a terminal-local variable, then set its normal |
7e59217d KL |
2052 | binding, like `set'. |
2053 | ||
708e05dc | 2054 | TERMINAL may be a terminal object, a frame, or nil (meaning the |
6ed8eeff | 2055 | selected frame's terminal device). */) |
5842a27b | 2056 | (Lisp_Object symbol, Lisp_Object terminal, Lisp_Object value) |
2a42d440 KL |
2057 | { |
2058 | Lisp_Object result; | |
6ed8eeff | 2059 | struct terminal *t = get_terminal (terminal, 1); |
256c9c3a | 2060 | push_kboard (d->kboard); |
2a42d440 | 2061 | result = Fset (symbol, value); |
256c9c3a | 2062 | pop_kboard (); |
2a42d440 KL |
2063 | return result; |
2064 | } | |
c40bb1ba | 2065 | #endif |
7921925c | 2066 | \f |
ffd56f97 JB |
2067 | /* Find the function at the end of a chain of symbol function indirections. */ |
2068 | ||
2069 | /* If OBJECT is a symbol, find the end of its function chain and | |
2070 | return the value found there. If OBJECT is not a symbol, just | |
2071 | return it. If there is a cycle in the function chain, signal a | |
2072 | cyclic-function-indirection error. | |
2073 | ||
2074 | This is like Findirect_function, except that it doesn't signal an | |
2075 | error if the chain ends up unbound. */ | |
2076 | Lisp_Object | |
971de7fb | 2077 | indirect_function (register Lisp_Object object) |
ffd56f97 | 2078 | { |
eb8c3be9 | 2079 | Lisp_Object tortoise, hare; |
ffd56f97 | 2080 | |
eb8c3be9 | 2081 | hare = tortoise = object; |
ffd56f97 JB |
2082 | |
2083 | for (;;) | |
2084 | { | |
eadf1faa | 2085 | if (!SYMBOLP (hare) || NILP (hare)) |
ffd56f97 | 2086 | break; |
1d59fbe3 | 2087 | hare = SYMBOL_FUNCTION (hare); |
eadf1faa | 2088 | if (!SYMBOLP (hare) || NILP (hare)) |
ffd56f97 | 2089 | break; |
1d59fbe3 | 2090 | hare = SYMBOL_FUNCTION (hare); |
ffd56f97 | 2091 | |
1d59fbe3 | 2092 | tortoise = SYMBOL_FUNCTION (tortoise); |
ffd56f97 | 2093 | |
eb8c3be9 | 2094 | if (EQ (hare, tortoise)) |
740ef0b5 | 2095 | xsignal1 (Qcyclic_function_indirection, object); |
ffd56f97 JB |
2096 | } |
2097 | ||
2098 | return hare; | |
2099 | } | |
2100 | ||
a7ca3326 | 2101 | DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 2, 0, |
8c1a1077 | 2102 | doc: /* Return the function at the end of OBJECT's function chain. |
0ddb0ae8 TTN |
2103 | If OBJECT is not a symbol, just return it. Otherwise, follow all |
2104 | function indirections to find the final function binding and return it. | |
2105 | If the final symbol in the chain is unbound, signal a void-function error. | |
8350f087 | 2106 | Optional arg NOERROR non-nil means to return nil instead of signaling. |
8c1a1077 PJ |
2107 | Signal a cyclic-function-indirection error if there is a loop in the |
2108 | function chain of symbols. */) | |
5842a27b | 2109 | (register Lisp_Object object, Lisp_Object noerror) |
ffd56f97 JB |
2110 | { |
2111 | Lisp_Object result; | |
2112 | ||
64de53d8 KS |
2113 | /* Optimize for no indirection. */ |
2114 | result = object; | |
eadf1faa | 2115 | if (SYMBOLP (result) && !NILP (result) |
1d59fbe3 | 2116 | && (result = SYMBOL_FUNCTION (result), SYMBOLP (result))) |
64de53d8 | 2117 | result = indirect_function (result); |
eadf1faa | 2118 | if (!NILP (result)) |
64de53d8 | 2119 | return result; |
ffd56f97 | 2120 | |
64de53d8 | 2121 | if (NILP (noerror)) |
740ef0b5 | 2122 | xsignal1 (Qvoid_function, object); |
ffd56f97 | 2123 | |
64de53d8 | 2124 | return Qnil; |
ffd56f97 JB |
2125 | } |
2126 | \f | |
7abaf5cc | 2127 | /* Extract and set vector and string elements. */ |
7921925c | 2128 | |
a7ca3326 | 2129 | DEFUN ("aref", Faref, Saref, 2, 2, 0, |
8c1a1077 PJ |
2130 | doc: /* Return the element of ARRAY at index IDX. |
2131 | ARRAY may be a vector, a string, a char-table, a bool-vector, | |
2132 | or a byte-code object. IDX starts at 0. */) | |
5842a27b | 2133 | (register Lisp_Object array, Lisp_Object idx) |
7921925c | 2134 | { |
ace1712c | 2135 | register EMACS_INT idxval; |
7921925c | 2136 | |
b7826503 | 2137 | CHECK_NUMBER (idx); |
7921925c | 2138 | idxval = XINT (idx); |
e9ebc175 | 2139 | if (STRINGP (array)) |
7921925c | 2140 | { |
ace1712c | 2141 | int c; |
d311d28c | 2142 | ptrdiff_t idxval_byte; |
25638b07 | 2143 | |
d5db4077 | 2144 | if (idxval < 0 || idxval >= SCHARS (array)) |
c24e4efe | 2145 | args_out_of_range (array, idx); |
25638b07 | 2146 | if (! STRING_MULTIBYTE (array)) |
d5db4077 | 2147 | return make_number ((unsigned char) SREF (array, idxval)); |
25638b07 RS |
2148 | idxval_byte = string_char_to_byte (array, idxval); |
2149 | ||
62a6e103 | 2150 | c = STRING_CHAR (SDATA (array) + idxval_byte); |
25638b07 | 2151 | return make_number (c); |
7921925c | 2152 | } |
4d276982 RS |
2153 | else if (BOOL_VECTOR_P (array)) |
2154 | { | |
1c0a7493 | 2155 | if (idxval < 0 || idxval >= bool_vector_size (array)) |
4d276982 | 2156 | args_out_of_range (array, idx); |
df5b4930 | 2157 | return bool_vector_ref (array, idxval); |
4d276982 RS |
2158 | } |
2159 | else if (CHAR_TABLE_P (array)) | |
2160 | { | |
e6e1f521 KH |
2161 | CHECK_CHARACTER (idx); |
2162 | return CHAR_TABLE_REF (array, idxval); | |
4d276982 | 2163 | } |
7921925c | 2164 | else |
c24e4efe | 2165 | { |
90d8445b | 2166 | ptrdiff_t size = 0; |
7f358972 | 2167 | if (VECTORP (array)) |
77b37c05 | 2168 | size = ASIZE (array); |
876c194c | 2169 | else if (COMPILEDP (array)) |
77b37c05 | 2170 | size = ASIZE (array) & PSEUDOVECTOR_SIZE_MASK; |
7f358972 RS |
2171 | else |
2172 | wrong_type_argument (Qarrayp, array); | |
2173 | ||
2174 | if (idxval < 0 || idxval >= size) | |
c24e4efe | 2175 | args_out_of_range (array, idx); |
b9598260 | 2176 | return AREF (array, idxval); |
c24e4efe | 2177 | } |
7921925c JB |
2178 | } |
2179 | ||
a7ca3326 | 2180 | DEFUN ("aset", Faset, Saset, 3, 3, 0, |
8c1a1077 | 2181 | doc: /* Store into the element of ARRAY at index IDX the value NEWELT. |
bfb96cb7 FP |
2182 | Return NEWELT. ARRAY may be a vector, a string, a char-table or a |
2183 | bool-vector. IDX starts at 0. */) | |
5842a27b | 2184 | (register Lisp_Object array, Lisp_Object idx, Lisp_Object newelt) |
7921925c | 2185 | { |
ace1712c | 2186 | register EMACS_INT idxval; |
7921925c | 2187 | |
b7826503 | 2188 | CHECK_NUMBER (idx); |
7921925c | 2189 | idxval = XINT (idx); |
0c64a8cd | 2190 | CHECK_ARRAY (array, Qarrayp); |
7921925c JB |
2191 | CHECK_IMPURE (array); |
2192 | ||
e9ebc175 | 2193 | if (VECTORP (array)) |
c24e4efe | 2194 | { |
77b37c05 | 2195 | if (idxval < 0 || idxval >= ASIZE (array)) |
c24e4efe | 2196 | args_out_of_range (array, idx); |
28be1ada | 2197 | ASET (array, idxval, newelt); |
c24e4efe | 2198 | } |
4d276982 RS |
2199 | else if (BOOL_VECTOR_P (array)) |
2200 | { | |
1c0a7493 | 2201 | if (idxval < 0 || idxval >= bool_vector_size (array)) |
4d276982 | 2202 | args_out_of_range (array, idx); |
df5b4930 | 2203 | bool_vector_set (array, idxval, !NILP (newelt)); |
4d276982 RS |
2204 | } |
2205 | else if (CHAR_TABLE_P (array)) | |
2206 | { | |
e6e1f521 KH |
2207 | CHECK_CHARACTER (idx); |
2208 | CHAR_TABLE_SET (array, idxval, newelt); | |
4d276982 | 2209 | } |
0fed43f3 | 2210 | else |
25638b07 | 2211 | { |
13bdea59 | 2212 | int c; |
25638b07 | 2213 | |
d5db4077 | 2214 | if (idxval < 0 || idxval >= SCHARS (array)) |
25638b07 | 2215 | args_out_of_range (array, idx); |
d9130605 | 2216 | CHECK_CHARACTER (newelt); |
13bdea59 | 2217 | c = XFASTINT (newelt); |
25638b07 | 2218 | |
0fed43f3 | 2219 | if (STRING_MULTIBYTE (array)) |
3c9de1af | 2220 | { |
d311d28c PE |
2221 | ptrdiff_t idxval_byte, nbytes; |
2222 | int prev_bytes, new_bytes; | |
0fed43f3 PE |
2223 | unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1; |
2224 | ||
2225 | nbytes = SBYTES (array); | |
2226 | idxval_byte = string_char_to_byte (array, idxval); | |
d5db4077 | 2227 | p1 = SDATA (array) + idxval_byte; |
0fed43f3 PE |
2228 | prev_bytes = BYTES_BY_CHAR_HEAD (*p1); |
2229 | new_bytes = CHAR_STRING (c, p0); | |
2230 | if (prev_bytes != new_bytes) | |
2231 | { | |
2232 | /* We must relocate the string data. */ | |
d311d28c | 2233 | ptrdiff_t nchars = SCHARS (array); |
0fed43f3 | 2234 | USE_SAFE_ALLOCA; |
98c6f1e3 | 2235 | unsigned char *str = SAFE_ALLOCA (nbytes); |
0fed43f3 | 2236 | |
0fed43f3 PE |
2237 | memcpy (str, SDATA (array), nbytes); |
2238 | allocate_string_data (XSTRING (array), nchars, | |
2239 | nbytes + new_bytes - prev_bytes); | |
2240 | memcpy (SDATA (array), str, idxval_byte); | |
2241 | p1 = SDATA (array) + idxval_byte; | |
2242 | memcpy (p1 + new_bytes, str + idxval_byte + prev_bytes, | |
2243 | nbytes - (idxval_byte + prev_bytes)); | |
2244 | SAFE_FREE (); | |
2245 | clear_string_char_byte_cache (); | |
2246 | } | |
2247 | while (new_bytes--) | |
2248 | *p1++ = *p0++; | |
3c9de1af | 2249 | } |
0fed43f3 | 2250 | else |
5dff5999 | 2251 | { |
0fed43f3 PE |
2252 | if (! SINGLE_BYTE_CHAR_P (c)) |
2253 | { | |
2254 | int i; | |
2255 | ||
2256 | for (i = SBYTES (array) - 1; i >= 0; i--) | |
2257 | if (SREF (array, i) >= 0x80) | |
2258 | args_out_of_range (array, newelt); | |
2259 | /* ARRAY is an ASCII string. Convert it to a multibyte | |
2260 | string, and try `aset' again. */ | |
2261 | STRING_SET_MULTIBYTE (array); | |
2262 | return Faset (array, idx, newelt); | |
2263 | } | |
2264 | SSET (array, idxval, c); | |
5dff5999 | 2265 | } |
7921925c JB |
2266 | } |
2267 | ||
2268 | return newelt; | |
2269 | } | |
7921925c JB |
2270 | \f |
2271 | /* Arithmetic functions */ | |
2272 | ||
ebb99847 BR |
2273 | Lisp_Object |
2274 | arithcompare (Lisp_Object num1, Lisp_Object num2, enum Arith_Comparison comparison) | |
7921925c | 2275 | { |
6bbd7a29 | 2276 | double f1 = 0, f2 = 0; |
de1339b0 | 2277 | bool floatp = 0; |
7921925c | 2278 | |
b7826503 PJ |
2279 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1); |
2280 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2); | |
7921925c | 2281 | |
e9ebc175 | 2282 | if (FLOATP (num1) || FLOATP (num2)) |
7921925c JB |
2283 | { |
2284 | floatp = 1; | |
7539e11f KR |
2285 | f1 = (FLOATP (num1)) ? XFLOAT_DATA (num1) : XINT (num1); |
2286 | f2 = (FLOATP (num2)) ? XFLOAT_DATA (num2) : XINT (num2); | |
7921925c | 2287 | } |
7921925c JB |
2288 | |
2289 | switch (comparison) | |
2290 | { | |
ebb99847 | 2291 | case ARITH_EQUAL: |
7921925c JB |
2292 | if (floatp ? f1 == f2 : XINT (num1) == XINT (num2)) |
2293 | return Qt; | |
2294 | return Qnil; | |
2295 | ||
ebb99847 | 2296 | case ARITH_NOTEQUAL: |
7921925c JB |
2297 | if (floatp ? f1 != f2 : XINT (num1) != XINT (num2)) |
2298 | return Qt; | |
2299 | return Qnil; | |
2300 | ||
ebb99847 | 2301 | case ARITH_LESS: |
7921925c JB |
2302 | if (floatp ? f1 < f2 : XINT (num1) < XINT (num2)) |
2303 | return Qt; | |
2304 | return Qnil; | |
2305 | ||
ebb99847 | 2306 | case ARITH_LESS_OR_EQUAL: |
7921925c JB |
2307 | if (floatp ? f1 <= f2 : XINT (num1) <= XINT (num2)) |
2308 | return Qt; | |
2309 | return Qnil; | |
2310 | ||
ebb99847 | 2311 | case ARITH_GRTR: |
7921925c JB |
2312 | if (floatp ? f1 > f2 : XINT (num1) > XINT (num2)) |
2313 | return Qt; | |
2314 | return Qnil; | |
2315 | ||
ebb99847 | 2316 | case ARITH_GRTR_OR_EQUAL: |
7921925c JB |
2317 | if (floatp ? f1 >= f2 : XINT (num1) >= XINT (num2)) |
2318 | return Qt; | |
2319 | return Qnil; | |
25e40a4b JB |
2320 | |
2321 | default: | |
1088b922 | 2322 | emacs_abort (); |
7921925c JB |
2323 | } |
2324 | } | |
2325 | ||
ebb99847 BR |
2326 | static Lisp_Object |
2327 | arithcompare_driver (ptrdiff_t nargs, Lisp_Object *args, | |
2328 | enum Arith_Comparison comparison) | |
7921925c | 2329 | { |
56a0e352 PE |
2330 | ptrdiff_t argnum; |
2331 | for (argnum = 1; argnum < nargs; ++argnum) | |
ebb99847 | 2332 | { |
4c539a7b | 2333 | if (EQ (Qnil, arithcompare (args[argnum - 1], args[argnum], comparison))) |
ebb99847 BR |
2334 | return Qnil; |
2335 | } | |
2336 | return Qt; | |
7921925c JB |
2337 | } |
2338 | ||
ebb99847 | 2339 | DEFUN ("=", Feqlsign, Seqlsign, 1, MANY, 0, |
53482f41 DA |
2340 | doc: /* Return t if args, all numbers or markers, are equal. |
2341 | usage: (= NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) | |
ebb99847 | 2342 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c | 2343 | { |
ebb99847 | 2344 | return arithcompare_driver (nargs, args, ARITH_EQUAL); |
7921925c JB |
2345 | } |
2346 | ||
ebb99847 | 2347 | DEFUN ("<", Flss, Slss, 1, MANY, 0, |
7b385b02 | 2348 | doc: /* Return t if each arg (a number or marker), is less than the next arg. |
53482f41 | 2349 | usage: (< NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
ebb99847 | 2350 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c | 2351 | { |
ebb99847 | 2352 | return arithcompare_driver (nargs, args, ARITH_LESS); |
7921925c JB |
2353 | } |
2354 | ||
ebb99847 | 2355 | DEFUN (">", Fgtr, Sgtr, 1, MANY, 0, |
7b385b02 | 2356 | doc: /* Return t if each arg (a number or marker) is greater than the next arg. |
53482f41 | 2357 | usage: (> NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
ebb99847 | 2358 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c | 2359 | { |
ebb99847 | 2360 | return arithcompare_driver (nargs, args, ARITH_GRTR); |
7921925c JB |
2361 | } |
2362 | ||
ebb99847 | 2363 | DEFUN ("<=", Fleq, Sleq, 1, MANY, 0, |
7b385b02 | 2364 | doc: /* Return t if each arg (a number or marker) is less than or equal to the next. |
53482f41 | 2365 | usage: (<= NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
ebb99847 BR |
2366 | (ptrdiff_t nargs, Lisp_Object *args) |
2367 | { | |
2368 | return arithcompare_driver (nargs, args, ARITH_LESS_OR_EQUAL); | |
2369 | } | |
2370 | ||
2371 | DEFUN (">=", Fgeq, Sgeq, 1, MANY, 0, | |
7b385b02 | 2372 | doc: /* Return t if each arg (a number or marker) is greater than or equal to the next. |
bd21bf41 | 2373 | usage: (>= NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
ebb99847 | 2374 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c | 2375 | { |
ebb99847 | 2376 | return arithcompare_driver (nargs, args, ARITH_GRTR_OR_EQUAL); |
7921925c JB |
2377 | } |
2378 | ||
2379 | DEFUN ("/=", Fneq, Sneq, 2, 2, 0, | |
8c1a1077 | 2380 | doc: /* Return t if first arg is not equal to second arg. Both must be numbers or markers. */) |
5842a27b | 2381 | (register Lisp_Object num1, Lisp_Object num2) |
7921925c | 2382 | { |
ebb99847 | 2383 | return arithcompare (num1, num2, ARITH_NOTEQUAL); |
7921925c | 2384 | } |
7921925c | 2385 | \f |
be44ca6c PE |
2386 | /* Convert the cons-of-integers, integer, or float value C to an |
2387 | unsigned value with maximum value MAX. Signal an error if C does not | |
2388 | have a valid format or is out of range. */ | |
2389 | uintmax_t | |
2390 | cons_to_unsigned (Lisp_Object c, uintmax_t max) | |
2391 | { | |
de1339b0 | 2392 | bool valid = 0; |
be44ca6c PE |
2393 | uintmax_t val IF_LINT (= 0); |
2394 | if (INTEGERP (c)) | |
2395 | { | |
2396 | valid = 0 <= XINT (c); | |
2397 | val = XINT (c); | |
2398 | } | |
2399 | else if (FLOATP (c)) | |
2400 | { | |
2401 | double d = XFLOAT_DATA (c); | |
2402 | if (0 <= d | |
2403 | && d < (max == UINTMAX_MAX ? (double) UINTMAX_MAX + 1 : max + 1)) | |
2404 | { | |
2405 | val = d; | |
2406 | valid = 1; | |
2407 | } | |
2408 | } | |
2409 | else if (CONSP (c) && NATNUMP (XCAR (c))) | |
2410 | { | |
2411 | uintmax_t top = XFASTINT (XCAR (c)); | |
2412 | Lisp_Object rest = XCDR (c); | |
2413 | if (top <= UINTMAX_MAX >> 24 >> 16 | |
2414 | && CONSP (rest) | |
2415 | && NATNUMP (XCAR (rest)) && XFASTINT (XCAR (rest)) < 1 << 24 | |
2416 | && NATNUMP (XCDR (rest)) && XFASTINT (XCDR (rest)) < 1 << 16) | |
2417 | { | |
2418 | uintmax_t mid = XFASTINT (XCAR (rest)); | |
2419 | val = top << 24 << 16 | mid << 16 | XFASTINT (XCDR (rest)); | |
2420 | valid = 1; | |
2421 | } | |
2422 | else if (top <= UINTMAX_MAX >> 16) | |
2423 | { | |
2424 | if (CONSP (rest)) | |
2425 | rest = XCAR (rest); | |
2426 | if (NATNUMP (rest) && XFASTINT (rest) < 1 << 16) | |
2427 | { | |
2428 | val = top << 16 | XFASTINT (rest); | |
2429 | valid = 1; | |
2430 | } | |
2431 | } | |
2432 | } | |
51cf3e31 | 2433 | |
be44ca6c PE |
2434 | if (! (valid && val <= max)) |
2435 | error ("Not an in-range integer, float, or cons of integers"); | |
2436 | return val; | |
51cf3e31 JB |
2437 | } |
2438 | ||
be44ca6c PE |
2439 | /* Convert the cons-of-integers, integer, or float value C to a signed |
2440 | value with extrema MIN and MAX. Signal an error if C does not have | |
2441 | a valid format or is out of range. */ | |
2442 | intmax_t | |
2443 | cons_to_signed (Lisp_Object c, intmax_t min, intmax_t max) | |
51cf3e31 | 2444 | { |
de1339b0 | 2445 | bool valid = 0; |
be44ca6c | 2446 | intmax_t val IF_LINT (= 0); |
51cf3e31 | 2447 | if (INTEGERP (c)) |
be44ca6c PE |
2448 | { |
2449 | val = XINT (c); | |
2450 | valid = 1; | |
2451 | } | |
2452 | else if (FLOATP (c)) | |
2453 | { | |
2454 | double d = XFLOAT_DATA (c); | |
2455 | if (min <= d | |
2456 | && d < (max == INTMAX_MAX ? (double) INTMAX_MAX + 1 : max + 1)) | |
2457 | { | |
2458 | val = d; | |
2459 | valid = 1; | |
2460 | } | |
2461 | } | |
2462 | else if (CONSP (c) && INTEGERP (XCAR (c))) | |
2463 | { | |
2464 | intmax_t top = XINT (XCAR (c)); | |
2465 | Lisp_Object rest = XCDR (c); | |
2466 | if (INTMAX_MIN >> 24 >> 16 <= top && top <= INTMAX_MAX >> 24 >> 16 | |
2467 | && CONSP (rest) | |
2468 | && NATNUMP (XCAR (rest)) && XFASTINT (XCAR (rest)) < 1 << 24 | |
2469 | && NATNUMP (XCDR (rest)) && XFASTINT (XCDR (rest)) < 1 << 16) | |
2470 | { | |
2471 | intmax_t mid = XFASTINT (XCAR (rest)); | |
2472 | val = top << 24 << 16 | mid << 16 | XFASTINT (XCDR (rest)); | |
2473 | valid = 1; | |
2474 | } | |
2475 | else if (INTMAX_MIN >> 16 <= top && top <= INTMAX_MAX >> 16) | |
2476 | { | |
2477 | if (CONSP (rest)) | |
2478 | rest = XCAR (rest); | |
2479 | if (NATNUMP (rest) && XFASTINT (rest) < 1 << 16) | |
2480 | { | |
2481 | val = top << 16 | XFASTINT (rest); | |
2482 | valid = 1; | |
2483 | } | |
2484 | } | |
2485 | } | |
2486 | ||
2487 | if (! (valid && min <= val && val <= max)) | |
2488 | error ("Not an in-range integer, float, or cons of integers"); | |
2489 | return val; | |
51cf3e31 JB |
2490 | } |
2491 | \f | |
a7ca3326 | 2492 | DEFUN ("number-to-string", Fnumber_to_string, Snumber_to_string, 1, 1, 0, |
bfb96cb7 | 2493 | doc: /* Return the decimal representation of NUMBER as a string. |
8c1a1077 PJ |
2494 | Uses a minus sign if negative. |
2495 | NUMBER may be an integer or a floating point number. */) | |
5842a27b | 2496 | (Lisp_Object number) |
7921925c | 2497 | { |
99027bdd PE |
2498 | char buffer[max (FLOAT_TO_STRING_BUFSIZE, INT_BUFSIZE_BOUND (EMACS_INT))]; |
2499 | int len; | |
7921925c | 2500 | |
b7826503 | 2501 | CHECK_NUMBER_OR_FLOAT (number); |
7921925c | 2502 | |
d9c2a0f2 | 2503 | if (FLOATP (number)) |
99027bdd PE |
2504 | len = float_to_string (buffer, XFLOAT_DATA (number)); |
2505 | else | |
2506 | len = sprintf (buffer, "%"pI"d", XINT (number)); | |
7921925c | 2507 | |
99027bdd | 2508 | return make_unibyte_string (buffer, len); |
7921925c JB |
2509 | } |
2510 | ||
a7ca3326 | 2511 | DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 2, 0, |
558ee900 | 2512 | doc: /* Parse STRING as a decimal number and return the number. |
12cb2b06 PE |
2513 | Ignore leading spaces and tabs, and all trailing chars. Return 0 if |
2514 | STRING cannot be parsed as an integer or floating point number. | |
8c1a1077 PJ |
2515 | |
2516 | If BASE, interpret STRING as a number in that base. If BASE isn't | |
2517 | present, base 10 is used. BASE must be between 2 and 16 (inclusive). | |
12cb2b06 | 2518 | If the base used is not 10, STRING is always parsed as an integer. */) |
5842a27b | 2519 | (register Lisp_Object string, Lisp_Object base) |
7921925c | 2520 | { |
57ace6d0 | 2521 | register char *p; |
342858a5 | 2522 | register int b; |
452f4150 | 2523 | Lisp_Object val; |
25e40a4b | 2524 | |
b7826503 | 2525 | CHECK_STRING (string); |
7921925c | 2526 | |
3883fbeb RS |
2527 | if (NILP (base)) |
2528 | b = 10; | |
2529 | else | |
2530 | { | |
b7826503 | 2531 | CHECK_NUMBER (base); |
d311d28c | 2532 | if (! (2 <= XINT (base) && XINT (base) <= 16)) |
740ef0b5 | 2533 | xsignal1 (Qargs_out_of_range, base); |
d311d28c | 2534 | b = XINT (base); |
3883fbeb RS |
2535 | } |
2536 | ||
57ace6d0 | 2537 | p = SSDATA (string); |
0a3e4d65 | 2538 | while (*p == ' ' || *p == '\t') |
25e40a4b JB |
2539 | p++; |
2540 | ||
452f4150 PE |
2541 | val = string_to_number (p, b, 1); |
2542 | return NILP (val) ? make_number (0) : val; | |
7921925c | 2543 | } |
7403b5c8 | 2544 | \f |
7921925c | 2545 | enum arithop |
7a283f36 GM |
2546 | { |
2547 | Aadd, | |
2548 | Asub, | |
2549 | Amult, | |
2550 | Adiv, | |
2551 | Alogand, | |
2552 | Alogior, | |
2553 | Alogxor, | |
2554 | Amax, | |
2555 | Amin | |
2556 | }; | |
2557 | ||
f66c7cf8 PE |
2558 | static Lisp_Object float_arith_driver (double, ptrdiff_t, enum arithop, |
2559 | ptrdiff_t, Lisp_Object *); | |
112396d6 | 2560 | static Lisp_Object |
f66c7cf8 | 2561 | arith_driver (enum arithop code, ptrdiff_t nargs, Lisp_Object *args) |
7921925c | 2562 | { |
de1339b0 PE |
2563 | Lisp_Object val; |
2564 | ptrdiff_t argnum, ok_args; | |
2565 | EMACS_INT accum = 0; | |
2566 | EMACS_INT next, ok_accum; | |
2567 | bool overflow = 0; | |
0ae6bdee | 2568 | |
7393bcbb | 2569 | switch (code) |
7921925c JB |
2570 | { |
2571 | case Alogior: | |
2572 | case Alogxor: | |
2573 | case Aadd: | |
2574 | case Asub: | |
7a283f36 GM |
2575 | accum = 0; |
2576 | break; | |
7921925c | 2577 | case Amult: |
7a283f36 GM |
2578 | accum = 1; |
2579 | break; | |
7921925c | 2580 | case Alogand: |
7a283f36 GM |
2581 | accum = -1; |
2582 | break; | |
2583 | default: | |
2584 | break; | |
7921925c JB |
2585 | } |
2586 | ||
2587 | for (argnum = 0; argnum < nargs; argnum++) | |
2588 | { | |
0ae6bdee PE |
2589 | if (! overflow) |
2590 | { | |
2591 | ok_args = argnum; | |
2592 | ok_accum = accum; | |
2593 | } | |
2594 | ||
7a283f36 GM |
2595 | /* Using args[argnum] as argument to CHECK_NUMBER_... */ |
2596 | val = args[argnum]; | |
b7826503 | 2597 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val); |
7921925c | 2598 | |
7a283f36 | 2599 | if (FLOATP (val)) |
0ae6bdee | 2600 | return float_arith_driver (ok_accum, ok_args, code, |
7a283f36 GM |
2601 | nargs, args); |
2602 | args[argnum] = val; | |
7921925c | 2603 | next = XINT (args[argnum]); |
7393bcbb | 2604 | switch (code) |
7921925c | 2605 | { |
7a283f36 | 2606 | case Aadd: |
0ae6bdee PE |
2607 | if (INT_ADD_OVERFLOW (accum, next)) |
2608 | { | |
2609 | overflow = 1; | |
2610 | accum &= INTMASK; | |
2611 | } | |
7a283f36 GM |
2612 | accum += next; |
2613 | break; | |
7921925c | 2614 | case Asub: |
0ae6bdee PE |
2615 | if (INT_SUBTRACT_OVERFLOW (accum, next)) |
2616 | { | |
2617 | overflow = 1; | |
2618 | accum &= INTMASK; | |
2619 | } | |
e64981da | 2620 | accum = argnum ? accum - next : nargs == 1 ? - next : next; |
7921925c | 2621 | break; |
7a283f36 | 2622 | case Amult: |
0ae6bdee PE |
2623 | if (INT_MULTIPLY_OVERFLOW (accum, next)) |
2624 | { | |
c8a9ca5a | 2625 | EMACS_UINT a = accum, b = next, ab = a * b; |
0ae6bdee | 2626 | overflow = 1; |
c8a9ca5a | 2627 | accum = ab & INTMASK; |
0ae6bdee PE |
2628 | } |
2629 | else | |
2630 | accum *= next; | |
7a283f36 | 2631 | break; |
7921925c | 2632 | case Adiv: |
7a283f36 GM |
2633 | if (!argnum) |
2634 | accum = next; | |
87fbf902 RS |
2635 | else |
2636 | { | |
2637 | if (next == 0) | |
740ef0b5 | 2638 | xsignal0 (Qarith_error); |
87fbf902 RS |
2639 | accum /= next; |
2640 | } | |
7921925c | 2641 | break; |
7a283f36 GM |
2642 | case Alogand: |
2643 | accum &= next; | |
2644 | break; | |
2645 | case Alogior: | |
2646 | accum |= next; | |
2647 | break; | |
2648 | case Alogxor: | |
2649 | accum ^= next; | |
2650 | break; | |
2651 | case Amax: | |
2652 | if (!argnum || next > accum) | |
2653 | accum = next; | |
2654 | break; | |
2655 | case Amin: | |
2656 | if (!argnum || next < accum) | |
2657 | accum = next; | |
2658 | break; | |
7921925c JB |
2659 | } |
2660 | } | |
2661 | ||
f187f1f7 | 2662 | XSETINT (val, accum); |
7921925c JB |
2663 | return val; |
2664 | } | |
2665 | ||
1a2f2d33 KH |
2666 | #undef isnan |
2667 | #define isnan(x) ((x) != (x)) | |
2668 | ||
7a283f36 | 2669 | static Lisp_Object |
f66c7cf8 PE |
2670 | float_arith_driver (double accum, ptrdiff_t argnum, enum arithop code, |
2671 | ptrdiff_t nargs, Lisp_Object *args) | |
7921925c JB |
2672 | { |
2673 | register Lisp_Object val; | |
2674 | double next; | |
7403b5c8 | 2675 | |
7921925c JB |
2676 | for (; argnum < nargs; argnum++) |
2677 | { | |
2678 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
b7826503 | 2679 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val); |
7921925c | 2680 | |
e9ebc175 | 2681 | if (FLOATP (val)) |
7921925c | 2682 | { |
7539e11f | 2683 | next = XFLOAT_DATA (val); |
7921925c JB |
2684 | } |
2685 | else | |
2686 | { | |
2687 | args[argnum] = val; /* runs into a compiler bug. */ | |
2688 | next = XINT (args[argnum]); | |
2689 | } | |
7393bcbb | 2690 | switch (code) |
7921925c JB |
2691 | { |
2692 | case Aadd: | |
2693 | accum += next; | |
2694 | break; | |
2695 | case Asub: | |
e64981da | 2696 | accum = argnum ? accum - next : nargs == 1 ? - next : next; |
7921925c JB |
2697 | break; |
2698 | case Amult: | |
2699 | accum *= next; | |
2700 | break; | |
2701 | case Adiv: | |
2702 | if (!argnum) | |
2703 | accum = next; | |
2704 | else | |
87fbf902 | 2705 | { |
ad8d56b9 | 2706 | if (! IEEE_FLOATING_POINT && next == 0) |
740ef0b5 | 2707 | xsignal0 (Qarith_error); |
87fbf902 RS |
2708 | accum /= next; |
2709 | } | |
7921925c JB |
2710 | break; |
2711 | case Alogand: | |
2712 | case Alogior: | |
2713 | case Alogxor: | |
2714 | return wrong_type_argument (Qinteger_or_marker_p, val); | |
2715 | case Amax: | |
1a2f2d33 | 2716 | if (!argnum || isnan (next) || next > accum) |
7921925c JB |
2717 | accum = next; |
2718 | break; | |
2719 | case Amin: | |
1a2f2d33 | 2720 | if (!argnum || isnan (next) || next < accum) |
7921925c JB |
2721 | accum = next; |
2722 | break; | |
2723 | } | |
2724 | } | |
2725 | ||
2726 | return make_float (accum); | |
2727 | } | |
cc94f3b2 | 2728 | |
7921925c | 2729 | |
a7ca3326 | 2730 | DEFUN ("+", Fplus, Splus, 0, MANY, 0, |
8c1a1077 PJ |
2731 | doc: /* Return sum of any number of arguments, which are numbers or markers. |
2732 | usage: (+ &rest NUMBERS-OR-MARKERS) */) | |
f66c7cf8 | 2733 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2734 | { |
2735 | return arith_driver (Aadd, nargs, args); | |
2736 | } | |
2737 | ||
a7ca3326 | 2738 | DEFUN ("-", Fminus, Sminus, 0, MANY, 0, |
558ee900 | 2739 | doc: /* Negate number or subtract numbers or markers and return the result. |
8c1a1077 | 2740 | With one arg, negates it. With more than one arg, |
f44fba9e | 2741 | subtracts all but the first from the first. |
8c1a1077 | 2742 | usage: (- &optional NUMBER-OR-MARKER &rest MORE-NUMBERS-OR-MARKERS) */) |
f66c7cf8 | 2743 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2744 | { |
2745 | return arith_driver (Asub, nargs, args); | |
2746 | } | |
2747 | ||
a7ca3326 | 2748 | DEFUN ("*", Ftimes, Stimes, 0, MANY, 0, |
be24eadf | 2749 | doc: /* Return product of any number of arguments, which are numbers or markers. |
8c1a1077 | 2750 | usage: (* &rest NUMBERS-OR-MARKERS) */) |
f66c7cf8 | 2751 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2752 | { |
2753 | return arith_driver (Amult, nargs, args); | |
2754 | } | |
2755 | ||
32e5c58c | 2756 | DEFUN ("/", Fquo, Squo, 1, MANY, 0, |
be24eadf | 2757 | doc: /* Return first argument divided by all the remaining arguments. |
f44fba9e | 2758 | The arguments must be numbers or markers. |
32e5c58c | 2759 | usage: (/ DIVIDEND &rest DIVISORS) */) |
f66c7cf8 | 2760 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c | 2761 | { |
f66c7cf8 | 2762 | ptrdiff_t argnum; |
7ef98053 | 2763 | for (argnum = 2; argnum < nargs; argnum++) |
28712a21 JB |
2764 | if (FLOATP (args[argnum])) |
2765 | return float_arith_driver (0, 0, Adiv, nargs, args); | |
7921925c JB |
2766 | return arith_driver (Adiv, nargs, args); |
2767 | } | |
2768 | ||
a7ca3326 | 2769 | DEFUN ("%", Frem, Srem, 2, 2, 0, |
be24eadf | 2770 | doc: /* Return remainder of X divided by Y. |
8c1a1077 | 2771 | Both must be integers or markers. */) |
5842a27b | 2772 | (register Lisp_Object x, Lisp_Object y) |
7921925c JB |
2773 | { |
2774 | Lisp_Object val; | |
2775 | ||
b7826503 PJ |
2776 | CHECK_NUMBER_COERCE_MARKER (x); |
2777 | CHECK_NUMBER_COERCE_MARKER (y); | |
7921925c | 2778 | |
d311d28c | 2779 | if (XINT (y) == 0) |
740ef0b5 | 2780 | xsignal0 (Qarith_error); |
87fbf902 | 2781 | |
d9c2a0f2 | 2782 | XSETINT (val, XINT (x) % XINT (y)); |
7921925c JB |
2783 | return val; |
2784 | } | |
2785 | ||
44fa9da5 | 2786 | DEFUN ("mod", Fmod, Smod, 2, 2, 0, |
be24eadf | 2787 | doc: /* Return X modulo Y. |
8c1a1077 PJ |
2788 | The result falls between zero (inclusive) and Y (exclusive). |
2789 | Both X and Y must be numbers or markers. */) | |
5842a27b | 2790 | (register Lisp_Object x, Lisp_Object y) |
44fa9da5 PE |
2791 | { |
2792 | Lisp_Object val; | |
5260234d | 2793 | EMACS_INT i1, i2; |
44fa9da5 | 2794 | |
b7826503 PJ |
2795 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (x); |
2796 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (y); | |
44fa9da5 | 2797 | |
d9c2a0f2 | 2798 | if (FLOATP (x) || FLOATP (y)) |
ad8d56b9 PE |
2799 | return fmod_float (x, y); |
2800 | ||
d9c2a0f2 EN |
2801 | i1 = XINT (x); |
2802 | i2 = XINT (y); | |
44fa9da5 PE |
2803 | |
2804 | if (i2 == 0) | |
740ef0b5 | 2805 | xsignal0 (Qarith_error); |
7403b5c8 | 2806 | |
44fa9da5 PE |
2807 | i1 %= i2; |
2808 | ||
2809 | /* If the "remainder" comes out with the wrong sign, fix it. */ | |
04f7ec69 | 2810 | if (i2 < 0 ? i1 > 0 : i1 < 0) |
44fa9da5 PE |
2811 | i1 += i2; |
2812 | ||
f187f1f7 | 2813 | XSETINT (val, i1); |
44fa9da5 PE |
2814 | return val; |
2815 | } | |
2816 | ||
a7ca3326 | 2817 | DEFUN ("max", Fmax, Smax, 1, MANY, 0, |
8c1a1077 | 2818 | doc: /* Return largest of all the arguments (which must be numbers or markers). |
f44fba9e | 2819 | The value is always a number; markers are converted to numbers. |
8c1a1077 | 2820 | usage: (max NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
f66c7cf8 | 2821 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2822 | { |
2823 | return arith_driver (Amax, nargs, args); | |
2824 | } | |
2825 | ||
a7ca3326 | 2826 | DEFUN ("min", Fmin, Smin, 1, MANY, 0, |
8c1a1077 | 2827 | doc: /* Return smallest of all the arguments (which must be numbers or markers). |
f44fba9e | 2828 | The value is always a number; markers are converted to numbers. |
8c1a1077 | 2829 | usage: (min NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
f66c7cf8 | 2830 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2831 | { |
2832 | return arith_driver (Amin, nargs, args); | |
2833 | } | |
2834 | ||
2835 | DEFUN ("logand", Flogand, Slogand, 0, MANY, 0, | |
8c1a1077 | 2836 | doc: /* Return bitwise-and of all the arguments. |
f44fba9e | 2837 | Arguments may be integers, or markers converted to integers. |
8c1a1077 | 2838 | usage: (logand &rest INTS-OR-MARKERS) */) |
f66c7cf8 | 2839 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2840 | { |
2841 | return arith_driver (Alogand, nargs, args); | |
2842 | } | |
2843 | ||
2844 | DEFUN ("logior", Flogior, Slogior, 0, MANY, 0, | |
8c1a1077 | 2845 | doc: /* Return bitwise-or of all the arguments. |
f44fba9e | 2846 | Arguments may be integers, or markers converted to integers. |
8c1a1077 | 2847 | usage: (logior &rest INTS-OR-MARKERS) */) |
f66c7cf8 | 2848 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2849 | { |
2850 | return arith_driver (Alogior, nargs, args); | |
2851 | } | |
2852 | ||
2853 | DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0, | |
8c1a1077 | 2854 | doc: /* Return bitwise-exclusive-or of all the arguments. |
f44fba9e | 2855 | Arguments may be integers, or markers converted to integers. |
31fb1b2c | 2856 | usage: (logxor &rest INTS-OR-MARKERS) */) |
f66c7cf8 | 2857 | (ptrdiff_t nargs, Lisp_Object *args) |
7921925c JB |
2858 | { |
2859 | return arith_driver (Alogxor, nargs, args); | |
2860 | } | |
2861 | ||
2862 | DEFUN ("ash", Fash, Sash, 2, 2, 0, | |
8c1a1077 PJ |
2863 | doc: /* Return VALUE with its bits shifted left by COUNT. |
2864 | If COUNT is negative, shifting is actually to the right. | |
2865 | In this case, the sign bit is duplicated. */) | |
5842a27b | 2866 | (register Lisp_Object value, Lisp_Object count) |
7921925c JB |
2867 | { |
2868 | register Lisp_Object val; | |
2869 | ||
b7826503 PJ |
2870 | CHECK_NUMBER (value); |
2871 | CHECK_NUMBER (count); | |
7921925c | 2872 | |
81d70626 RS |
2873 | if (XINT (count) >= BITS_PER_EMACS_INT) |
2874 | XSETINT (val, 0); | |
2875 | else if (XINT (count) > 0) | |
6ab1b16c | 2876 | XSETINT (val, XUINT (value) << XFASTINT (count)); |
81d70626 RS |
2877 | else if (XINT (count) <= -BITS_PER_EMACS_INT) |
2878 | XSETINT (val, XINT (value) < 0 ? -1 : 0); | |
7921925c | 2879 | else |
3d9652eb | 2880 | XSETINT (val, XINT (value) >> -XINT (count)); |
7921925c JB |
2881 | return val; |
2882 | } | |
2883 | ||
2884 | DEFUN ("lsh", Flsh, Slsh, 2, 2, 0, | |
8c1a1077 PJ |
2885 | doc: /* Return VALUE with its bits shifted left by COUNT. |
2886 | If COUNT is negative, shifting is actually to the right. | |
3a9b1297 | 2887 | In this case, zeros are shifted in on the left. */) |
5842a27b | 2888 | (register Lisp_Object value, Lisp_Object count) |
7921925c JB |
2889 | { |
2890 | register Lisp_Object val; | |
2891 | ||
b7826503 PJ |
2892 | CHECK_NUMBER (value); |
2893 | CHECK_NUMBER (count); | |
7921925c | 2894 | |
81d70626 RS |
2895 | if (XINT (count) >= BITS_PER_EMACS_INT) |
2896 | XSETINT (val, 0); | |
2897 | else if (XINT (count) > 0) | |
c8a9ca5a | 2898 | XSETINT (val, XUINT (value) << XFASTINT (count)); |
81d70626 RS |
2899 | else if (XINT (count) <= -BITS_PER_EMACS_INT) |
2900 | XSETINT (val, 0); | |
7921925c | 2901 | else |
c8a9ca5a | 2902 | XSETINT (val, XUINT (value) >> -XINT (count)); |
7921925c JB |
2903 | return val; |
2904 | } | |
2905 | ||
a7ca3326 | 2906 | DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0, |
8c1a1077 PJ |
2907 | doc: /* Return NUMBER plus one. NUMBER may be a number or a marker. |
2908 | Markers are converted to integers. */) | |
5842a27b | 2909 | (register Lisp_Object number) |
7921925c | 2910 | { |
b7826503 | 2911 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number); |
7921925c | 2912 | |
d9c2a0f2 | 2913 | if (FLOATP (number)) |
7539e11f | 2914 | return (make_float (1.0 + XFLOAT_DATA (number))); |
7921925c | 2915 | |
d9c2a0f2 EN |
2916 | XSETINT (number, XINT (number) + 1); |
2917 | return number; | |
7921925c JB |
2918 | } |
2919 | ||
a7ca3326 | 2920 | DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0, |
8c1a1077 PJ |
2921 | doc: /* Return NUMBER minus one. NUMBER may be a number or a marker. |
2922 | Markers are converted to integers. */) | |
5842a27b | 2923 | (register Lisp_Object number) |
7921925c | 2924 | { |
b7826503 | 2925 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number); |
7921925c | 2926 | |
d9c2a0f2 | 2927 | if (FLOATP (number)) |
7539e11f | 2928 | return (make_float (-1.0 + XFLOAT_DATA (number))); |
7921925c | 2929 | |
d9c2a0f2 EN |
2930 | XSETINT (number, XINT (number) - 1); |
2931 | return number; | |
7921925c JB |
2932 | } |
2933 | ||
2934 | DEFUN ("lognot", Flognot, Slognot, 1, 1, 0, | |
8c1a1077 | 2935 | doc: /* Return the bitwise complement of NUMBER. NUMBER must be an integer. */) |
5842a27b | 2936 | (register Lisp_Object number) |
7921925c | 2937 | { |
b7826503 | 2938 | CHECK_NUMBER (number); |
53924017 | 2939 | XSETINT (number, ~XINT (number)); |
d9c2a0f2 | 2940 | return number; |
7921925c | 2941 | } |
6b61353c | 2942 | |
a7ca3326 | 2943 | DEFUN ("byteorder", Fbyteorder, Sbyteorder, 0, 0, 0, |
6b61353c KH |
2944 | doc: /* Return the byteorder for the machine. |
2945 | Returns 66 (ASCII uppercase B) for big endian machines or 108 (ASCII | |
2946 | lowercase l) for small endian machines. */) | |
5842a27b | 2947 | (void) |
6b61353c KH |
2948 | { |
2949 | unsigned i = 0x04030201; | |
2950 | int order = *(char *)&i == 1 ? 108 : 66; | |
2951 | ||
2952 | return make_number (order); | |
2953 | } | |
2954 | ||
3e0b94e7 DC |
2955 | /* Because we round up the bool vector allocate size to word_size |
2956 | units, we can safely read past the "end" of the vector in the | |
2cf00efc | 2957 | operations below. These extra bits are always zero. */ |
3e0b94e7 | 2958 | |
87c4314d | 2959 | static bits_word |
f2752e01 | 2960 | bool_vector_spare_mask (EMACS_INT nr_bits) |
3e0b94e7 | 2961 | { |
87c4314d | 2962 | return (((bits_word) 1) << (nr_bits % BITS_PER_BITS_WORD)) - 1; |
3e0b94e7 DC |
2963 | } |
2964 | ||
2cf00efc PE |
2965 | /* Info about unsigned long long, falling back on unsigned long |
2966 | if unsigned long long is not available. */ | |
2967 | ||
13a5993b | 2968 | #if HAVE_UNSIGNED_LONG_LONG_INT && defined ULLONG_MAX |
2cf00efc | 2969 | enum { BITS_PER_ULL = CHAR_BIT * sizeof (unsigned long long) }; |
56a0e352 | 2970 | # define ULL_MAX ULLONG_MAX |
3e0b94e7 | 2971 | #else |
2cf00efc | 2972 | enum { BITS_PER_ULL = CHAR_BIT * sizeof (unsigned long) }; |
56a0e352 | 2973 | # define ULL_MAX ULONG_MAX |
2cf00efc | 2974 | # define count_one_bits_ll count_one_bits_l |
56a0e352 | 2975 | # define count_trailing_zeros_ll count_trailing_zeros_l |
3e0b94e7 DC |
2976 | #endif |
2977 | ||
2cf00efc PE |
2978 | /* Shift VAL right by the width of an unsigned long long. |
2979 | BITS_PER_ULL must be less than BITS_PER_BITS_WORD. */ | |
2980 | ||
2981 | static bits_word | |
2982 | shift_right_ull (bits_word w) | |
2983 | { | |
2984 | /* Pacify bogus GCC warning about shift count exceeding type width. */ | |
2985 | int shift = BITS_PER_ULL - BITS_PER_BITS_WORD < 0 ? BITS_PER_ULL : 0; | |
2986 | return w >> shift; | |
2987 | } | |
2988 | ||
2989 | /* Return the number of 1 bits in W. */ | |
2990 | ||
2991 | static int | |
2992 | count_one_bits_word (bits_word w) | |
2993 | { | |
2994 | if (BITS_WORD_MAX <= UINT_MAX) | |
2995 | return count_one_bits (w); | |
2996 | else if (BITS_WORD_MAX <= ULONG_MAX) | |
2997 | return count_one_bits_l (w); | |
2998 | else | |
2999 | { | |
3000 | int i = 0, count = 0; | |
3001 | while (count += count_one_bits_ll (w), | |
0fadc0b0 | 3002 | (i += BITS_PER_ULL) < BITS_PER_BITS_WORD) |
2cf00efc PE |
3003 | w = shift_right_ull (w); |
3004 | return count; | |
3005 | } | |
3006 | } | |
3007 | ||
3e0b94e7 DC |
3008 | enum bool_vector_op { bool_vector_exclusive_or, |
3009 | bool_vector_union, | |
3010 | bool_vector_intersection, | |
3011 | bool_vector_set_difference, | |
3012 | bool_vector_subsetp }; | |
3013 | ||
7be68de5 | 3014 | static Lisp_Object |
23e79746 PE |
3015 | bool_vector_binop_driver (Lisp_Object a, |
3016 | Lisp_Object b, | |
3e0b94e7 DC |
3017 | Lisp_Object dest, |
3018 | enum bool_vector_op op) | |
3019 | { | |
3020 | EMACS_INT nr_bits; | |
23e79746 | 3021 | bits_word *adata, *bdata, *destdata; |
87d86601 | 3022 | ptrdiff_t i = 0; |
3e0b94e7 DC |
3023 | ptrdiff_t nr_words; |
3024 | ||
23e79746 PE |
3025 | CHECK_BOOL_VECTOR (a); |
3026 | CHECK_BOOL_VECTOR (b); | |
3e0b94e7 | 3027 | |
23e79746 PE |
3028 | nr_bits = bool_vector_size (a); |
3029 | if (bool_vector_size (b) != nr_bits) | |
3030 | wrong_length_argument (a, b, dest); | |
3e0b94e7 | 3031 | |
87d86601 | 3032 | nr_words = bool_vector_words (nr_bits); |
23e79746 PE |
3033 | adata = bool_vector_data (a); |
3034 | bdata = bool_vector_data (b); | |
87d86601 | 3035 | |
3e0b94e7 DC |
3036 | if (NILP (dest)) |
3037 | { | |
2cf00efc | 3038 | dest = make_uninit_bool_vector (nr_bits); |
23e79746 | 3039 | destdata = bool_vector_data (dest); |
3e0b94e7 DC |
3040 | } |
3041 | else | |
3042 | { | |
3043 | CHECK_BOOL_VECTOR (dest); | |
23e79746 | 3044 | destdata = bool_vector_data (dest); |
454e2fb9 | 3045 | if (bool_vector_size (dest) != nr_bits) |
23e79746 | 3046 | wrong_length_argument (a, b, dest); |
3e0b94e7 | 3047 | |
87d86601 PE |
3048 | switch (op) |
3049 | { | |
3050 | case bool_vector_exclusive_or: | |
75360f19 PE |
3051 | for (; i < nr_words; i++) |
3052 | if (destdata[i] != (adata[i] ^ bdata[i])) | |
3053 | goto set_dest; | |
87d86601 | 3054 | break; |
7be68de5 | 3055 | |
87d86601 | 3056 | case bool_vector_subsetp: |
75360f19 PE |
3057 | for (; i < nr_words; i++) |
3058 | if (adata[i] &~ bdata[i]) | |
87d86601 | 3059 | return Qnil; |
75360f19 PE |
3060 | return Qt; |
3061 | ||
3062 | case bool_vector_union: | |
3063 | for (; i < nr_words; i++) | |
3064 | if (destdata[i] != (adata[i] | bdata[i])) | |
3065 | goto set_dest; | |
87d86601 PE |
3066 | break; |
3067 | ||
3068 | case bool_vector_intersection: | |
75360f19 PE |
3069 | for (; i < nr_words; i++) |
3070 | if (destdata[i] != (adata[i] & bdata[i])) | |
3071 | goto set_dest; | |
87d86601 | 3072 | break; |
2cf00efc | 3073 | |
87d86601 | 3074 | case bool_vector_set_difference: |
75360f19 PE |
3075 | for (; i < nr_words; i++) |
3076 | if (destdata[i] != (adata[i] &~ bdata[i])) | |
3077 | goto set_dest; | |
87d86601 PE |
3078 | break; |
3079 | } | |
75360f19 PE |
3080 | |
3081 | return Qnil; | |
87d86601 PE |
3082 | } |
3083 | ||
75360f19 | 3084 | set_dest: |
87d86601 | 3085 | switch (op) |
3e0b94e7 | 3086 | { |
87d86601 | 3087 | case bool_vector_exclusive_or: |
75360f19 | 3088 | for (; i < nr_words; i++) |
23e79746 | 3089 | destdata[i] = adata[i] ^ bdata[i]; |
87d86601 PE |
3090 | break; |
3091 | ||
3092 | case bool_vector_union: | |
75360f19 | 3093 | for (; i < nr_words; i++) |
23e79746 | 3094 | destdata[i] = adata[i] | bdata[i]; |
87d86601 | 3095 | break; |
3e0b94e7 | 3096 | |
87d86601 | 3097 | case bool_vector_intersection: |
75360f19 | 3098 | for (; i < nr_words; i++) |
23e79746 | 3099 | destdata[i] = adata[i] & bdata[i]; |
87d86601 | 3100 | break; |
3e0b94e7 | 3101 | |
87d86601 | 3102 | case bool_vector_set_difference: |
75360f19 | 3103 | for (; i < nr_words; i++) |
23e79746 | 3104 | destdata[i] = adata[i] &~ bdata[i]; |
87d86601 | 3105 | break; |
75360f19 PE |
3106 | |
3107 | default: | |
3108 | eassume (0); | |
3e0b94e7 | 3109 | } |
7be68de5 | 3110 | |
87d86601 | 3111 | return dest; |
3e0b94e7 DC |
3112 | } |
3113 | ||
2fcc742f PE |
3114 | /* PRECONDITION must be true. Return VALUE. This odd construction |
3115 | works around a bogus GCC diagnostic "shift count >= width of type". */ | |
3116 | ||
3117 | static int | |
3118 | pre_value (bool precondition, int value) | |
3119 | { | |
3120 | eassume (precondition); | |
3121 | return precondition ? value : 0; | |
3122 | } | |
3123 | ||
3e0b94e7 DC |
3124 | /* Compute the number of trailing zero bits in val. If val is zero, |
3125 | return the number of bits in val. */ | |
595e113b | 3126 | static int |
87c4314d | 3127 | count_trailing_zero_bits (bits_word val) |
3e0b94e7 | 3128 | { |
87c4314d | 3129 | if (BITS_WORD_MAX == UINT_MAX) |
595e113b | 3130 | return count_trailing_zeros (val); |
87c4314d | 3131 | if (BITS_WORD_MAX == ULONG_MAX) |
595e113b | 3132 | return count_trailing_zeros_l (val); |
56a0e352 | 3133 | if (BITS_WORD_MAX == ULL_MAX) |
595e113b | 3134 | return count_trailing_zeros_ll (val); |
595e113b | 3135 | |
87c4314d | 3136 | /* The rest of this code is for the unlikely platform where bits_word differs |
595e113b | 3137 | in width from unsigned int, unsigned long, and unsigned long long. */ |
2cf00efc | 3138 | val |= ~ BITS_WORD_MAX; |
87c4314d | 3139 | if (BITS_WORD_MAX <= UINT_MAX) |
595e113b | 3140 | return count_trailing_zeros (val); |
87c4314d | 3141 | if (BITS_WORD_MAX <= ULONG_MAX) |
595e113b | 3142 | return count_trailing_zeros_l (val); |
2cf00efc PE |
3143 | else |
3144 | { | |
3145 | int count; | |
3146 | for (count = 0; | |
3147 | count < BITS_PER_BITS_WORD - BITS_PER_ULL; | |
3148 | count += BITS_PER_ULL) | |
3149 | { | |
56a0e352 | 3150 | if (val & ULL_MAX) |
2cf00efc PE |
3151 | return count + count_trailing_zeros_ll (val); |
3152 | val = shift_right_ull (val); | |
3153 | } | |
3154 | ||
3155 | if (BITS_PER_BITS_WORD % BITS_PER_ULL != 0 | |
3156 | && BITS_WORD_MAX == (bits_word) -1) | |
2fcc742f PE |
3157 | val |= (bits_word) 1 << pre_value (ULONG_MAX < BITS_WORD_MAX, |
3158 | BITS_PER_BITS_WORD % BITS_PER_ULL); | |
2cf00efc PE |
3159 | return count + count_trailing_zeros_ll (val); |
3160 | } | |
3e0b94e7 DC |
3161 | } |
3162 | ||
87c4314d PE |
3163 | static bits_word |
3164 | bits_word_to_host_endian (bits_word val) | |
3e0b94e7 | 3165 | { |
595e113b PE |
3166 | #ifndef WORDS_BIGENDIAN |
3167 | return val; | |
3e0b94e7 | 3168 | #else |
2cf00efc PE |
3169 | if (BITS_WORD_MAX >> 31 == 1) |
3170 | return bswap_32 (val); | |
3171 | # if HAVE_UNSIGNED_LONG_LONG | |
3172 | if (BITS_WORD_MAX >> 31 >> 31 >> 1 == 1) | |
3173 | return bswap_64 (val); | |
3174 | # endif | |
3175 | { | |
3176 | int i; | |
3177 | bits_word r = 0; | |
3178 | for (i = 0; i < sizeof val; i++) | |
3179 | { | |
3180 | r = ((r << 1 << (CHAR_BIT - 1)) | |
3181 | | (val & ((1u << 1 << (CHAR_BIT - 1)) - 1))); | |
3182 | val = val >> 1 >> (CHAR_BIT - 1); | |
3183 | } | |
3184 | return r; | |
3185 | } | |
3e0b94e7 DC |
3186 | #endif |
3187 | } | |
3188 | ||
3189 | DEFUN ("bool-vector-exclusive-or", Fbool_vector_exclusive_or, | |
3190 | Sbool_vector_exclusive_or, 2, 3, 0, | |
454e2fb9 PE |
3191 | doc: /* Return A ^ B, bitwise exclusive or. |
3192 | If optional third argument C is given, store result into C. | |
3193 | A, B, and C must be bool vectors of the same length. | |
3194 | Return the destination vector if it changed or nil otherwise. */) | |
3e0b94e7 DC |
3195 | (Lisp_Object a, Lisp_Object b, Lisp_Object c) |
3196 | { | |
3197 | return bool_vector_binop_driver (a, b, c, bool_vector_exclusive_or); | |
3198 | } | |
3199 | ||
3200 | DEFUN ("bool-vector-union", Fbool_vector_union, | |
3201 | Sbool_vector_union, 2, 3, 0, | |
454e2fb9 PE |
3202 | doc: /* Return A | B, bitwise or. |
3203 | If optional third argument C is given, store result into C. | |
3204 | A, B, and C must be bool vectors of the same length. | |
3205 | Return the destination vector if it changed or nil otherwise. */) | |
3e0b94e7 DC |
3206 | (Lisp_Object a, Lisp_Object b, Lisp_Object c) |
3207 | { | |
3208 | return bool_vector_binop_driver (a, b, c, bool_vector_union); | |
3209 | } | |
3210 | ||
3211 | DEFUN ("bool-vector-intersection", Fbool_vector_intersection, | |
3212 | Sbool_vector_intersection, 2, 3, 0, | |
454e2fb9 PE |
3213 | doc: /* Return A & B, bitwise and. |
3214 | If optional third argument C is given, store result into C. | |
3215 | A, B, and C must be bool vectors of the same length. | |
3216 | Return the destination vector if it changed or nil otherwise. */) | |
3e0b94e7 DC |
3217 | (Lisp_Object a, Lisp_Object b, Lisp_Object c) |
3218 | { | |
3219 | return bool_vector_binop_driver (a, b, c, bool_vector_intersection); | |
3220 | } | |
3221 | ||
3222 | DEFUN ("bool-vector-set-difference", Fbool_vector_set_difference, | |
3223 | Sbool_vector_set_difference, 2, 3, 0, | |
454e2fb9 PE |
3224 | doc: /* Return A &~ B, set difference. |
3225 | If optional third argument C is given, store result into C. | |
3226 | A, B, and C must be bool vectors of the same length. | |
3227 | Return the destination vector if it changed or nil otherwise. */) | |
3e0b94e7 DC |
3228 | (Lisp_Object a, Lisp_Object b, Lisp_Object c) |
3229 | { | |
3230 | return bool_vector_binop_driver (a, b, c, bool_vector_set_difference); | |
3231 | } | |
3232 | ||
3233 | DEFUN ("bool-vector-subsetp", Fbool_vector_subsetp, | |
3234 | Sbool_vector_subsetp, 2, 2, 0, | |
3f73284a PE |
3235 | doc: /* Return t if every t value in A is also t in B, nil otherwise. |
3236 | A and B must be bool vectors of the same length. */) | |
3e0b94e7 DC |
3237 | (Lisp_Object a, Lisp_Object b) |
3238 | { | |
3f73284a | 3239 | return bool_vector_binop_driver (a, b, b, bool_vector_subsetp); |
3e0b94e7 DC |
3240 | } |
3241 | ||
3242 | DEFUN ("bool-vector-not", Fbool_vector_not, | |
3243 | Sbool_vector_not, 1, 2, 0, | |
454e2fb9 PE |
3244 | doc: /* Compute ~A, set complement. |
3245 | If optional second argument B is given, store result into B. | |
3246 | A and B must be bool vectors of the same length. | |
3e0b94e7 DC |
3247 | Return the destination vector. */) |
3248 | (Lisp_Object a, Lisp_Object b) | |
3249 | { | |
3250 | EMACS_INT nr_bits; | |
87c4314d | 3251 | bits_word *bdata, *adata; |
3e0b94e7 | 3252 | ptrdiff_t i; |
3e0b94e7 DC |
3253 | |
3254 | CHECK_BOOL_VECTOR (a); | |
1c0a7493 | 3255 | nr_bits = bool_vector_size (a); |
3e0b94e7 DC |
3256 | |
3257 | if (NILP (b)) | |
2cf00efc | 3258 | b = make_uninit_bool_vector (nr_bits); |
3e0b94e7 DC |
3259 | else |
3260 | { | |
3261 | CHECK_BOOL_VECTOR (b); | |
454e2fb9 PE |
3262 | if (bool_vector_size (b) != nr_bits) |
3263 | wrong_length_argument (a, b, Qnil); | |
3e0b94e7 DC |
3264 | } |
3265 | ||
df5b4930 PE |
3266 | bdata = bool_vector_data (b); |
3267 | adata = bool_vector_data (a); | |
3e0b94e7 | 3268 | |
87c4314d | 3269 | for (i = 0; i < nr_bits / BITS_PER_BITS_WORD; i++) |
df5b4930 | 3270 | bdata[i] = BITS_WORD_MAX & ~adata[i]; |
3e0b94e7 | 3271 | |
87c4314d | 3272 | if (nr_bits % BITS_PER_BITS_WORD) |
3e0b94e7 | 3273 | { |
df5b4930 | 3274 | bits_word mword = bits_word_to_host_endian (adata[i]); |
3e0b94e7 DC |
3275 | mword = ~mword; |
3276 | mword &= bool_vector_spare_mask (nr_bits); | |
87c4314d | 3277 | bdata[i] = bits_word_to_host_endian (mword); |
3e0b94e7 DC |
3278 | } |
3279 | ||
3280 | return b; | |
3281 | } | |
3282 | ||
ec2c4ee6 PE |
3283 | DEFUN ("bool-vector-count-population", Fbool_vector_count_population, |
3284 | Sbool_vector_count_population, 1, 1, 0, | |
3285 | doc: /* Count how many elements in A are t. | |
3286 | A is a bool vector. To count A's nil elements, subtract the return | |
3287 | value from A's length. */) | |
3288 | (Lisp_Object a) | |
3e0b94e7 | 3289 | { |
f2752e01 | 3290 | EMACS_INT count; |
3e0b94e7 | 3291 | EMACS_INT nr_bits; |
87c4314d | 3292 | bits_word *adata; |
2cf00efc | 3293 | ptrdiff_t i, nwords; |
3e0b94e7 DC |
3294 | |
3295 | CHECK_BOOL_VECTOR (a); | |
3296 | ||
1c0a7493 | 3297 | nr_bits = bool_vector_size (a); |
2cf00efc | 3298 | nwords = bool_vector_words (nr_bits); |
3e0b94e7 | 3299 | count = 0; |
df5b4930 | 3300 | adata = bool_vector_data (a); |
3e0b94e7 | 3301 | |
2cf00efc PE |
3302 | for (i = 0; i < nwords; i++) |
3303 | count += count_one_bits_word (adata[i]); | |
3e0b94e7 DC |
3304 | |
3305 | return make_number (count); | |
3306 | } | |
3307 | ||
ec2c4ee6 PE |
3308 | DEFUN ("bool-vector-count-consecutive", Fbool_vector_count_consecutive, |
3309 | Sbool_vector_count_consecutive, 3, 3, 0, | |
3310 | doc: /* Count how many consecutive elements in A equal B starting at I. | |
3311 | A is a bool vector, B is t or nil, and I is an index into A. */) | |
3e0b94e7 DC |
3312 | (Lisp_Object a, Lisp_Object b, Lisp_Object i) |
3313 | { | |
f2752e01 | 3314 | EMACS_INT count; |
3e0b94e7 | 3315 | EMACS_INT nr_bits; |
f2752e01 | 3316 | int offset; |
87c4314d PE |
3317 | bits_word *adata; |
3318 | bits_word twiddle; | |
3319 | bits_word mword; /* Machine word. */ | |
2cf00efc | 3320 | ptrdiff_t pos, pos0; |
3e0b94e7 DC |
3321 | ptrdiff_t nr_words; |
3322 | ||
3323 | CHECK_BOOL_VECTOR (a); | |
3324 | CHECK_NATNUM (i); | |
3325 | ||
1c0a7493 | 3326 | nr_bits = bool_vector_size (a); |
3e0b94e7 DC |
3327 | if (XFASTINT (i) > nr_bits) /* Allow one past the end for convenience */ |
3328 | args_out_of_range (a, i); | |
3329 | ||
df5b4930 PE |
3330 | adata = bool_vector_data (a); |
3331 | nr_words = bool_vector_words (nr_bits); | |
87c4314d PE |
3332 | pos = XFASTINT (i) / BITS_PER_BITS_WORD; |
3333 | offset = XFASTINT (i) % BITS_PER_BITS_WORD; | |
3e0b94e7 DC |
3334 | count = 0; |
3335 | ||
3336 | /* By XORing with twiddle, we transform the problem of "count | |
3337 | consecutive equal values" into "count the zero bits". The latter | |
3338 | operation usually has hardware support. */ | |
df5b4930 | 3339 | twiddle = NILP (b) ? 0 : BITS_WORD_MAX; |
3e0b94e7 DC |
3340 | |
3341 | /* Scan the remainder of the mword at the current offset. */ | |
3342 | if (pos < nr_words && offset != 0) | |
3343 | { | |
87c4314d | 3344 | mword = bits_word_to_host_endian (adata[pos]); |
3e0b94e7 DC |
3345 | mword ^= twiddle; |
3346 | mword >>= offset; | |
87d86601 PE |
3347 | |
3348 | /* Do not count the pad bits. */ | |
2cf00efc | 3349 | mword |= (bits_word) 1 << (BITS_PER_BITS_WORD - offset); |
87d86601 | 3350 | |
3e0b94e7 | 3351 | count = count_trailing_zero_bits (mword); |
7be68de5 | 3352 | pos++; |
87c4314d | 3353 | if (count + offset < BITS_PER_BITS_WORD) |
3e0b94e7 DC |
3354 | return make_number (count); |
3355 | } | |
3356 | ||
3357 | /* Scan whole words until we either reach the end of the vector or | |
3358 | find an mword that doesn't completely match. twiddle is | |
3359 | endian-independent. */ | |
2cf00efc | 3360 | pos0 = pos; |
3e0b94e7 | 3361 | while (pos < nr_words && adata[pos] == twiddle) |
2cf00efc PE |
3362 | pos++; |
3363 | count += (pos - pos0) * BITS_PER_BITS_WORD; | |
3e0b94e7 DC |
3364 | |
3365 | if (pos < nr_words) | |
3366 | { | |
3367 | /* If we stopped because of a mismatch, see how many bits match | |
3368 | in the current mword. */ | |
87c4314d | 3369 | mword = bits_word_to_host_endian (adata[pos]); |
3e0b94e7 DC |
3370 | mword ^= twiddle; |
3371 | count += count_trailing_zero_bits (mword); | |
3372 | } | |
87c4314d | 3373 | else if (nr_bits % BITS_PER_BITS_WORD != 0) |
3e0b94e7 DC |
3374 | { |
3375 | /* If we hit the end, we might have overshot our count. Reduce | |
3376 | the total by the number of spare bits at the end of the | |
3377 | vector. */ | |
87c4314d | 3378 | count -= BITS_PER_BITS_WORD - nr_bits % BITS_PER_BITS_WORD; |
3e0b94e7 DC |
3379 | } |
3380 | ||
3381 | return make_number (count); | |
3382 | } | |
6b61353c | 3383 | |
7921925c JB |
3384 | \f |
3385 | void | |
971de7fb | 3386 | syms_of_data (void) |
7921925c | 3387 | { |
6315e761 RS |
3388 | Lisp_Object error_tail, arith_tail; |
3389 | ||
fe6aa7a1 BT |
3390 | #include "data.x" |
3391 | ||
620c53a6 SM |
3392 | DEFSYM (Qquote, "quote"); |
3393 | DEFSYM (Qlambda, "lambda"); | |
3394 | DEFSYM (Qsubr, "subr"); | |
3395 | DEFSYM (Qerror_conditions, "error-conditions"); | |
3396 | DEFSYM (Qerror_message, "error-message"); | |
3397 | DEFSYM (Qtop_level, "top-level"); | |
3398 | ||
3399 | DEFSYM (Qerror, "error"); | |
71873e2b | 3400 | DEFSYM (Quser_error, "user-error"); |
620c53a6 | 3401 | DEFSYM (Qquit, "quit"); |
454e2fb9 | 3402 | DEFSYM (Qwrong_length_argument, "wrong-length-argument"); |
620c53a6 SM |
3403 | DEFSYM (Qwrong_type_argument, "wrong-type-argument"); |
3404 | DEFSYM (Qargs_out_of_range, "args-out-of-range"); | |
3405 | DEFSYM (Qvoid_function, "void-function"); | |
3406 | DEFSYM (Qcyclic_function_indirection, "cyclic-function-indirection"); | |
3407 | DEFSYM (Qcyclic_variable_indirection, "cyclic-variable-indirection"); | |
3408 | DEFSYM (Qvoid_variable, "void-variable"); | |
3409 | DEFSYM (Qsetting_constant, "setting-constant"); | |
3410 | DEFSYM (Qinvalid_read_syntax, "invalid-read-syntax"); | |
3411 | ||
3412 | DEFSYM (Qinvalid_function, "invalid-function"); | |
3413 | DEFSYM (Qwrong_number_of_arguments, "wrong-number-of-arguments"); | |
3414 | DEFSYM (Qno_catch, "no-catch"); | |
3415 | DEFSYM (Qend_of_file, "end-of-file"); | |
3416 | DEFSYM (Qarith_error, "arith-error"); | |
3417 | DEFSYM (Qbeginning_of_buffer, "beginning-of-buffer"); | |
3418 | DEFSYM (Qend_of_buffer, "end-of-buffer"); | |
3419 | DEFSYM (Qbuffer_read_only, "buffer-read-only"); | |
3420 | DEFSYM (Qtext_read_only, "text-read-only"); | |
3421 | DEFSYM (Qmark_inactive, "mark-inactive"); | |
3422 | ||
3423 | DEFSYM (Qlistp, "listp"); | |
3424 | DEFSYM (Qconsp, "consp"); | |
3425 | DEFSYM (Qsymbolp, "symbolp"); | |
3426 | DEFSYM (Qkeywordp, "keywordp"); | |
3427 | DEFSYM (Qintegerp, "integerp"); | |
3428 | DEFSYM (Qnatnump, "natnump"); | |
3429 | DEFSYM (Qwholenump, "wholenump"); | |
3430 | DEFSYM (Qstringp, "stringp"); | |
3431 | DEFSYM (Qarrayp, "arrayp"); | |
3432 | DEFSYM (Qsequencep, "sequencep"); | |
3433 | DEFSYM (Qbufferp, "bufferp"); | |
3434 | DEFSYM (Qvectorp, "vectorp"); | |
3e0b94e7 | 3435 | DEFSYM (Qbool_vector_p, "bool-vector-p"); |
620c53a6 SM |
3436 | DEFSYM (Qchar_or_string_p, "char-or-string-p"); |
3437 | DEFSYM (Qmarkerp, "markerp"); | |
3438 | DEFSYM (Qbuffer_or_string_p, "buffer-or-string-p"); | |
3439 | DEFSYM (Qinteger_or_marker_p, "integer-or-marker-p"); | |
3440 | DEFSYM (Qboundp, "boundp"); | |
3441 | DEFSYM (Qfboundp, "fboundp"); | |
3442 | ||
3443 | DEFSYM (Qfloatp, "floatp"); | |
3444 | DEFSYM (Qnumberp, "numberp"); | |
3445 | DEFSYM (Qnumber_or_marker_p, "number-or-marker-p"); | |
3446 | ||
3447 | DEFSYM (Qchar_table_p, "char-table-p"); | |
3448 | DEFSYM (Qvector_or_char_table_p, "vector-or-char-table-p"); | |
3449 | ||
3450 | DEFSYM (Qsubrp, "subrp"); | |
3451 | DEFSYM (Qunevalled, "unevalled"); | |
3452 | DEFSYM (Qmany, "many"); | |
3453 | ||
3454 | DEFSYM (Qcdr, "cdr"); | |
3455 | ||
3456 | /* Handle automatic advice activation. */ | |
3457 | DEFSYM (Qad_advice_info, "ad-advice-info"); | |
3458 | DEFSYM (Qad_activate_internal, "ad-activate-internal"); | |
f845f2c9 | 3459 | |
d67b4f80 | 3460 | error_tail = pure_cons (Qerror, Qnil); |
6315e761 | 3461 | |
620c53a6 SM |
3462 | /* ERROR is used as a signaler for random errors for which nothing else is |
3463 | right. */ | |
7921925c JB |
3464 | |
3465 | Fput (Qerror, Qerror_conditions, | |
6315e761 | 3466 | error_tail); |
7921925c | 3467 | Fput (Qerror, Qerror_message, |
2a0213a6 | 3468 | build_pure_c_string ("error")); |
7921925c | 3469 | |
71873e2b SM |
3470 | #define PUT_ERROR(sym, tail, msg) \ |
3471 | Fput (sym, Qerror_conditions, pure_cons (sym, tail)); \ | |
2a0213a6 | 3472 | Fput (sym, Qerror_message, build_pure_c_string (msg)) |
71873e2b SM |
3473 | |
3474 | PUT_ERROR (Qquit, Qnil, "Quit"); | |
3475 | ||
3476 | PUT_ERROR (Quser_error, error_tail, ""); | |
454e2fb9 | 3477 | PUT_ERROR (Qwrong_length_argument, error_tail, "Wrong length argument"); |
71873e2b SM |
3478 | PUT_ERROR (Qwrong_type_argument, error_tail, "Wrong type argument"); |
3479 | PUT_ERROR (Qargs_out_of_range, error_tail, "Args out of range"); | |
3480 | PUT_ERROR (Qvoid_function, error_tail, | |
3481 | "Symbol's function definition is void"); | |
3482 | PUT_ERROR (Qcyclic_function_indirection, error_tail, | |
3483 | "Symbol's chain of function indirections contains a loop"); | |
3484 | PUT_ERROR (Qcyclic_variable_indirection, error_tail, | |
3485 | "Symbol's chain of variable indirections contains a loop"); | |
620c53a6 | 3486 | DEFSYM (Qcircular_list, "circular-list"); |
71873e2b SM |
3487 | PUT_ERROR (Qcircular_list, error_tail, "List contains a loop"); |
3488 | PUT_ERROR (Qvoid_variable, error_tail, "Symbol's value as variable is void"); | |
3489 | PUT_ERROR (Qsetting_constant, error_tail, | |
3490 | "Attempt to set a constant symbol"); | |
3491 | PUT_ERROR (Qinvalid_read_syntax, error_tail, "Invalid read syntax"); | |
3492 | PUT_ERROR (Qinvalid_function, error_tail, "Invalid function"); | |
3493 | PUT_ERROR (Qwrong_number_of_arguments, error_tail, | |
3494 | "Wrong number of arguments"); | |
3495 | PUT_ERROR (Qno_catch, error_tail, "No catch for tag"); | |
3496 | PUT_ERROR (Qend_of_file, error_tail, "End of file during parsing"); | |
7921925c | 3497 | |
d67b4f80 | 3498 | arith_tail = pure_cons (Qarith_error, error_tail); |
71873e2b | 3499 | Fput (Qarith_error, Qerror_conditions, arith_tail); |
2a0213a6 | 3500 | Fput (Qarith_error, Qerror_message, build_pure_c_string ("Arithmetic error")); |
71873e2b SM |
3501 | |
3502 | PUT_ERROR (Qbeginning_of_buffer, error_tail, "Beginning of buffer"); | |
3503 | PUT_ERROR (Qend_of_buffer, error_tail, "End of buffer"); | |
3504 | PUT_ERROR (Qbuffer_read_only, error_tail, "Buffer is read-only"); | |
3505 | PUT_ERROR (Qtext_read_only, pure_cons (Qbuffer_read_only, error_tail), | |
3506 | "Text is read-only"); | |
8f9f49d7 | 3507 | |
620c53a6 SM |
3508 | DEFSYM (Qrange_error, "range-error"); |
3509 | DEFSYM (Qdomain_error, "domain-error"); | |
3510 | DEFSYM (Qsingularity_error, "singularity-error"); | |
3511 | DEFSYM (Qoverflow_error, "overflow-error"); | |
3512 | DEFSYM (Qunderflow_error, "underflow-error"); | |
6315e761 | 3513 | |
71873e2b SM |
3514 | PUT_ERROR (Qdomain_error, arith_tail, "Arithmetic domain error"); |
3515 | ||
3516 | PUT_ERROR (Qrange_error, arith_tail, "Arithmetic range error"); | |
3517 | ||
3518 | PUT_ERROR (Qsingularity_error, Fcons (Qdomain_error, arith_tail), | |
3519 | "Arithmetic singularity error"); | |
3520 | ||
3521 | PUT_ERROR (Qoverflow_error, Fcons (Qdomain_error, arith_tail), | |
3522 | "Arithmetic overflow error"); | |
3523 | PUT_ERROR (Qunderflow_error, Fcons (Qdomain_error, arith_tail), | |
3524 | "Arithmetic underflow error"); | |
6315e761 | 3525 | |
7921925c JB |
3526 | staticpro (&Qnil); |
3527 | staticpro (&Qt); | |
7921925c | 3528 | staticpro (&Qunbound); |
7921925c | 3529 | |
39bcc759 | 3530 | /* Types that type-of returns. */ |
620c53a6 SM |
3531 | DEFSYM (Qinteger, "integer"); |
3532 | DEFSYM (Qsymbol, "symbol"); | |
3533 | DEFSYM (Qstring, "string"); | |
3534 | DEFSYM (Qcons, "cons"); | |
3535 | DEFSYM (Qmarker, "marker"); | |
3536 | DEFSYM (Qoverlay, "overlay"); | |
3537 | DEFSYM (Qfloat, "float"); | |
3538 | DEFSYM (Qwindow_configuration, "window-configuration"); | |
3539 | DEFSYM (Qprocess, "process"); | |
3540 | DEFSYM (Qwindow, "window"); | |
620c53a6 SM |
3541 | DEFSYM (Qcompiled_function, "compiled-function"); |
3542 | DEFSYM (Qbuffer, "buffer"); | |
3543 | DEFSYM (Qframe, "frame"); | |
3544 | DEFSYM (Qvector, "vector"); | |
3545 | DEFSYM (Qchar_table, "char-table"); | |
3546 | DEFSYM (Qbool_vector, "bool-vector"); | |
3547 | DEFSYM (Qhash_table, "hash-table"); | |
3ab6e069 | 3548 | DEFSYM (Qmisc, "misc"); |
39bcc759 | 3549 | |
61b108cc SM |
3550 | DEFSYM (Qdefun, "defun"); |
3551 | ||
4e6f2626 CY |
3552 | DEFSYM (Qfont_spec, "font-spec"); |
3553 | DEFSYM (Qfont_entity, "font-entity"); | |
3554 | DEFSYM (Qfont_object, "font-object"); | |
3555 | ||
3860280a | 3556 | DEFSYM (Qinteractive_form, "interactive-form"); |
32e5c58c | 3557 | DEFSYM (Qdefalias_fset_function, "defalias-fset-function"); |
3860280a | 3558 | |
1d59fbe3 | 3559 | set_symbol_function (Qwholenump, SYMBOL_FUNCTION (Qnatnump)); |
e6190b11 | 3560 | |
29208e82 | 3561 | DEFVAR_LISP ("most-positive-fixnum", Vmost_positive_fixnum, |
9d113d9d AS |
3562 | doc: /* The largest value that is representable in a Lisp integer. */); |
3563 | Vmost_positive_fixnum = make_number (MOST_POSITIVE_FIXNUM); | |
d67b4f80 | 3564 | XSYMBOL (intern_c_string ("most-positive-fixnum"))->constant = 1; |
bfb96cb7 | 3565 | |
29208e82 | 3566 | DEFVAR_LISP ("most-negative-fixnum", Vmost_negative_fixnum, |
9d113d9d AS |
3567 | doc: /* The smallest value that is representable in a Lisp integer. */); |
3568 | Vmost_negative_fixnum = make_number (MOST_NEGATIVE_FIXNUM); | |
d67b4f80 | 3569 | XSYMBOL (intern_c_string ("most-negative-fixnum"))->constant = 1; |
7921925c | 3570 | } |