| 1 | /* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter. |
| 2 | Copyright (C) 1985,86,88,93,94,95,97,98,99, 2000, 2001 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 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 |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | |
| 23 | #include <config.h> |
| 24 | #include <signal.h> |
| 25 | #include <stdio.h> |
| 26 | #include "lisp.h" |
| 27 | #include "puresize.h" |
| 28 | #include "charset.h" |
| 29 | #include "buffer.h" |
| 30 | #include "keyboard.h" |
| 31 | #include "frame.h" |
| 32 | #include "syssignal.h" |
| 33 | |
| 34 | #ifdef STDC_HEADERS |
| 35 | #include <float.h> |
| 36 | #endif |
| 37 | |
| 38 | /* If IEEE_FLOATING_POINT isn't defined, default it from FLT_*. */ |
| 39 | #ifndef IEEE_FLOATING_POINT |
| 40 | #if (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \ |
| 41 | && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128) |
| 42 | #define IEEE_FLOATING_POINT 1 |
| 43 | #else |
| 44 | #define IEEE_FLOATING_POINT 0 |
| 45 | #endif |
| 46 | #endif |
| 47 | |
| 48 | /* Work around a problem that happens because math.h on hpux 7 |
| 49 | defines two static variables--which, in Emacs, are not really static, |
| 50 | because `static' is defined as nothing. The problem is that they are |
| 51 | here, in floatfns.c, and in lread.c. |
| 52 | These macros prevent the name conflict. */ |
| 53 | #if defined (HPUX) && !defined (HPUX8) |
| 54 | #define _MAXLDBL data_c_maxldbl |
| 55 | #define _NMAXLDBL data_c_nmaxldbl |
| 56 | #endif |
| 57 | |
| 58 | #include <math.h> |
| 59 | |
| 60 | #if !defined (atof) |
| 61 | extern double atof (); |
| 62 | #endif /* !atof */ |
| 63 | |
| 64 | Lisp_Object Qnil, Qt, Qquote, Qlambda, Qsubr, Qunbound; |
| 65 | Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; |
| 66 | Lisp_Object Qerror, Qquit, Qwrong_type_argument, Qargs_out_of_range; |
| 67 | Lisp_Object Qvoid_variable, Qvoid_function, Qcyclic_function_indirection; |
| 68 | Lisp_Object Qcyclic_variable_indirection, Qcircular_list; |
| 69 | Lisp_Object Qsetting_constant, Qinvalid_read_syntax; |
| 70 | Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; |
| 71 | Lisp_Object Qend_of_file, Qarith_error, Qmark_inactive; |
| 72 | Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
| 73 | Lisp_Object Qtext_read_only; |
| 74 | Lisp_Object Qintegerp, Qnatnump, Qwholenump, Qsymbolp, Qlistp, Qconsp; |
| 75 | Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp; |
| 76 | Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp; |
| 77 | Lisp_Object Qbuffer_or_string_p, Qkeywordp; |
| 78 | Lisp_Object Qboundp, Qfboundp; |
| 79 | Lisp_Object Qchar_table_p, Qvector_or_char_table_p; |
| 80 | |
| 81 | Lisp_Object Qcdr; |
| 82 | Lisp_Object Qad_advice_info, Qad_activate_internal; |
| 83 | |
| 84 | Lisp_Object Qrange_error, Qdomain_error, Qsingularity_error; |
| 85 | Lisp_Object Qoverflow_error, Qunderflow_error; |
| 86 | |
| 87 | Lisp_Object Qfloatp; |
| 88 | Lisp_Object Qnumberp, Qnumber_or_marker_p; |
| 89 | |
| 90 | static Lisp_Object Qinteger, Qsymbol, Qstring, Qcons, Qmarker, Qoverlay; |
| 91 | static Lisp_Object Qfloat, Qwindow_configuration, Qwindow; |
| 92 | Lisp_Object Qprocess; |
| 93 | static Lisp_Object Qcompiled_function, Qbuffer, Qframe, Qvector; |
| 94 | static Lisp_Object Qchar_table, Qbool_vector, Qhash_table; |
| 95 | static Lisp_Object Qsubrp, Qmany, Qunevalled; |
| 96 | |
| 97 | static Lisp_Object swap_in_symval_forwarding P_ ((Lisp_Object, Lisp_Object)); |
| 98 | |
| 99 | Lisp_Object Vmost_positive_fixnum, Vmost_negative_fixnum; |
| 100 | |
| 101 | |
| 102 | void |
| 103 | circular_list_error (list) |
| 104 | Lisp_Object list; |
| 105 | { |
| 106 | Fsignal (Qcircular_list, list); |
| 107 | } |
| 108 | |
| 109 | |
| 110 | Lisp_Object |
| 111 | wrong_type_argument (predicate, value) |
| 112 | register Lisp_Object predicate, value; |
| 113 | { |
| 114 | register Lisp_Object tem; |
| 115 | do |
| 116 | { |
| 117 | /* If VALUE is not even a valid Lisp object, abort here |
| 118 | where we can get a backtrace showing where it came from. */ |
| 119 | if ((unsigned int) XGCTYPE (value) >= Lisp_Type_Limit) |
| 120 | abort (); |
| 121 | |
| 122 | value = Fsignal (Qwrong_type_argument, Fcons (predicate, Fcons (value, Qnil))); |
| 123 | tem = call1 (predicate, value); |
| 124 | } |
| 125 | while (NILP (tem)); |
| 126 | return value; |
| 127 | } |
| 128 | |
| 129 | void |
| 130 | pure_write_error () |
| 131 | { |
| 132 | error ("Attempt to modify read-only object"); |
| 133 | } |
| 134 | |
| 135 | void |
| 136 | args_out_of_range (a1, a2) |
| 137 | Lisp_Object a1, a2; |
| 138 | { |
| 139 | while (1) |
| 140 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Qnil))); |
| 141 | } |
| 142 | |
| 143 | void |
| 144 | args_out_of_range_3 (a1, a2, a3) |
| 145 | Lisp_Object a1, a2, a3; |
| 146 | { |
| 147 | while (1) |
| 148 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Fcons (a3, Qnil)))); |
| 149 | } |
| 150 | |
| 151 | /* On some machines, XINT needs a temporary location. |
| 152 | Here it is, in case it is needed. */ |
| 153 | |
| 154 | int sign_extend_temp; |
| 155 | |
| 156 | /* On a few machines, XINT can only be done by calling this. */ |
| 157 | |
| 158 | int |
| 159 | sign_extend_lisp_int (num) |
| 160 | EMACS_INT num; |
| 161 | { |
| 162 | if (num & (((EMACS_INT) 1) << (VALBITS - 1))) |
| 163 | return num | (((EMACS_INT) (-1)) << VALBITS); |
| 164 | else |
| 165 | return num & ((((EMACS_INT) 1) << VALBITS) - 1); |
| 166 | } |
| 167 | \f |
| 168 | /* Data type predicates */ |
| 169 | |
| 170 | DEFUN ("eq", Feq, Seq, 2, 2, 0, |
| 171 | doc: /* Return t if the two args are the same Lisp object. */) |
| 172 | (obj1, obj2) |
| 173 | Lisp_Object obj1, obj2; |
| 174 | { |
| 175 | if (EQ (obj1, obj2)) |
| 176 | return Qt; |
| 177 | return Qnil; |
| 178 | } |
| 179 | |
| 180 | DEFUN ("null", Fnull, Snull, 1, 1, 0, |
| 181 | doc: /* Return t if OBJECT is nil. */) |
| 182 | (object) |
| 183 | Lisp_Object object; |
| 184 | { |
| 185 | if (NILP (object)) |
| 186 | return Qt; |
| 187 | return Qnil; |
| 188 | } |
| 189 | |
| 190 | DEFUN ("type-of", Ftype_of, Stype_of, 1, 1, 0, |
| 191 | doc: /* Return a symbol representing the type of OBJECT. |
| 192 | The symbol returned names the object's basic type; |
| 193 | for example, (type-of 1) returns `integer'. */) |
| 194 | (object) |
| 195 | Lisp_Object object; |
| 196 | { |
| 197 | switch (XGCTYPE (object)) |
| 198 | { |
| 199 | case Lisp_Int: |
| 200 | return Qinteger; |
| 201 | |
| 202 | case Lisp_Symbol: |
| 203 | return Qsymbol; |
| 204 | |
| 205 | case Lisp_String: |
| 206 | return Qstring; |
| 207 | |
| 208 | case Lisp_Cons: |
| 209 | return Qcons; |
| 210 | |
| 211 | case Lisp_Misc: |
| 212 | switch (XMISCTYPE (object)) |
| 213 | { |
| 214 | case Lisp_Misc_Marker: |
| 215 | return Qmarker; |
| 216 | case Lisp_Misc_Overlay: |
| 217 | return Qoverlay; |
| 218 | case Lisp_Misc_Float: |
| 219 | return Qfloat; |
| 220 | } |
| 221 | abort (); |
| 222 | |
| 223 | case Lisp_Vectorlike: |
| 224 | if (GC_WINDOW_CONFIGURATIONP (object)) |
| 225 | return Qwindow_configuration; |
| 226 | if (GC_PROCESSP (object)) |
| 227 | return Qprocess; |
| 228 | if (GC_WINDOWP (object)) |
| 229 | return Qwindow; |
| 230 | if (GC_SUBRP (object)) |
| 231 | return Qsubr; |
| 232 | if (GC_COMPILEDP (object)) |
| 233 | return Qcompiled_function; |
| 234 | if (GC_BUFFERP (object)) |
| 235 | return Qbuffer; |
| 236 | if (GC_CHAR_TABLE_P (object)) |
| 237 | return Qchar_table; |
| 238 | if (GC_BOOL_VECTOR_P (object)) |
| 239 | return Qbool_vector; |
| 240 | if (GC_FRAMEP (object)) |
| 241 | return Qframe; |
| 242 | if (GC_HASH_TABLE_P (object)) |
| 243 | return Qhash_table; |
| 244 | return Qvector; |
| 245 | |
| 246 | case Lisp_Float: |
| 247 | return Qfloat; |
| 248 | |
| 249 | default: |
| 250 | abort (); |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0, |
| 255 | doc: /* Return t if OBJECT is a cons cell. */) |
| 256 | (object) |
| 257 | Lisp_Object object; |
| 258 | { |
| 259 | if (CONSP (object)) |
| 260 | return Qt; |
| 261 | return Qnil; |
| 262 | } |
| 263 | |
| 264 | DEFUN ("atom", Fatom, Satom, 1, 1, 0, |
| 265 | doc: /* Return t if OBJECT is not a cons cell. This includes nil. */) |
| 266 | (object) |
| 267 | Lisp_Object object; |
| 268 | { |
| 269 | if (CONSP (object)) |
| 270 | return Qnil; |
| 271 | return Qt; |
| 272 | } |
| 273 | |
| 274 | DEFUN ("listp", Flistp, Slistp, 1, 1, 0, |
| 275 | doc: /* Return t if OBJECT is a list. This includes nil. */) |
| 276 | (object) |
| 277 | Lisp_Object object; |
| 278 | { |
| 279 | if (CONSP (object) || NILP (object)) |
| 280 | return Qt; |
| 281 | return Qnil; |
| 282 | } |
| 283 | |
| 284 | DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0, |
| 285 | doc: /* Return t if OBJECT is not a list. Lists include nil. */) |
| 286 | (object) |
| 287 | Lisp_Object object; |
| 288 | { |
| 289 | if (CONSP (object) || NILP (object)) |
| 290 | return Qnil; |
| 291 | return Qt; |
| 292 | } |
| 293 | \f |
| 294 | DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0, |
| 295 | doc: /* Return t if OBJECT is a symbol. */) |
| 296 | (object) |
| 297 | Lisp_Object object; |
| 298 | { |
| 299 | if (SYMBOLP (object)) |
| 300 | return Qt; |
| 301 | return Qnil; |
| 302 | } |
| 303 | |
| 304 | /* Define this in C to avoid unnecessarily consing up the symbol |
| 305 | name. */ |
| 306 | DEFUN ("keywordp", Fkeywordp, Skeywordp, 1, 1, 0, |
| 307 | doc: /* Return t if OBJECT is a keyword. |
| 308 | This means that it is a symbol with a print name beginning with `:' |
| 309 | interned in the initial obarray. */) |
| 310 | (object) |
| 311 | Lisp_Object object; |
| 312 | { |
| 313 | if (SYMBOLP (object) |
| 314 | && SREF (SYMBOL_NAME (object), 0) == ':' |
| 315 | && SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (object)) |
| 316 | return Qt; |
| 317 | return Qnil; |
| 318 | } |
| 319 | |
| 320 | DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0, |
| 321 | doc: /* Return t if OBJECT is a vector. */) |
| 322 | (object) |
| 323 | Lisp_Object object; |
| 324 | { |
| 325 | if (VECTORP (object)) |
| 326 | return Qt; |
| 327 | return Qnil; |
| 328 | } |
| 329 | |
| 330 | DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0, |
| 331 | doc: /* Return t if OBJECT is a string. */) |
| 332 | (object) |
| 333 | Lisp_Object object; |
| 334 | { |
| 335 | if (STRINGP (object)) |
| 336 | return Qt; |
| 337 | return Qnil; |
| 338 | } |
| 339 | |
| 340 | DEFUN ("multibyte-string-p", Fmultibyte_string_p, Smultibyte_string_p, |
| 341 | 1, 1, 0, |
| 342 | doc: /* Return t if OBJECT is a multibyte string. */) |
| 343 | (object) |
| 344 | Lisp_Object object; |
| 345 | { |
| 346 | if (STRINGP (object) && STRING_MULTIBYTE (object)) |
| 347 | return Qt; |
| 348 | return Qnil; |
| 349 | } |
| 350 | |
| 351 | DEFUN ("char-table-p", Fchar_table_p, Schar_table_p, 1, 1, 0, |
| 352 | doc: /* Return t if OBJECT is a char-table. */) |
| 353 | (object) |
| 354 | Lisp_Object object; |
| 355 | { |
| 356 | if (CHAR_TABLE_P (object)) |
| 357 | return Qt; |
| 358 | return Qnil; |
| 359 | } |
| 360 | |
| 361 | DEFUN ("vector-or-char-table-p", Fvector_or_char_table_p, |
| 362 | Svector_or_char_table_p, 1, 1, 0, |
| 363 | doc: /* Return t if OBJECT is a char-table or vector. */) |
| 364 | (object) |
| 365 | Lisp_Object object; |
| 366 | { |
| 367 | if (VECTORP (object) || CHAR_TABLE_P (object)) |
| 368 | return Qt; |
| 369 | return Qnil; |
| 370 | } |
| 371 | |
| 372 | DEFUN ("bool-vector-p", Fbool_vector_p, Sbool_vector_p, 1, 1, 0, |
| 373 | doc: /* Return t if OBJECT is a bool-vector. */) |
| 374 | (object) |
| 375 | Lisp_Object object; |
| 376 | { |
| 377 | if (BOOL_VECTOR_P (object)) |
| 378 | return Qt; |
| 379 | return Qnil; |
| 380 | } |
| 381 | |
| 382 | DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0, |
| 383 | doc: /* Return t if OBJECT is an array (string or vector). */) |
| 384 | (object) |
| 385 | Lisp_Object object; |
| 386 | { |
| 387 | if (VECTORP (object) || STRINGP (object) |
| 388 | || CHAR_TABLE_P (object) || BOOL_VECTOR_P (object)) |
| 389 | return Qt; |
| 390 | return Qnil; |
| 391 | } |
| 392 | |
| 393 | DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0, |
| 394 | doc: /* Return t if OBJECT is a sequence (list or array). */) |
| 395 | (object) |
| 396 | register Lisp_Object object; |
| 397 | { |
| 398 | if (CONSP (object) || NILP (object) || VECTORP (object) || STRINGP (object) |
| 399 | || CHAR_TABLE_P (object) || BOOL_VECTOR_P (object)) |
| 400 | return Qt; |
| 401 | return Qnil; |
| 402 | } |
| 403 | |
| 404 | DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0, |
| 405 | doc: /* Return t if OBJECT is an editor buffer. */) |
| 406 | (object) |
| 407 | Lisp_Object object; |
| 408 | { |
| 409 | if (BUFFERP (object)) |
| 410 | return Qt; |
| 411 | return Qnil; |
| 412 | } |
| 413 | |
| 414 | DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0, |
| 415 | doc: /* Return t if OBJECT is a marker (editor pointer). */) |
| 416 | (object) |
| 417 | Lisp_Object object; |
| 418 | { |
| 419 | if (MARKERP (object)) |
| 420 | return Qt; |
| 421 | return Qnil; |
| 422 | } |
| 423 | |
| 424 | DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0, |
| 425 | doc: /* Return t if OBJECT is a built-in function. */) |
| 426 | (object) |
| 427 | Lisp_Object object; |
| 428 | { |
| 429 | if (SUBRP (object)) |
| 430 | return Qt; |
| 431 | return Qnil; |
| 432 | } |
| 433 | |
| 434 | DEFUN ("byte-code-function-p", Fbyte_code_function_p, Sbyte_code_function_p, |
| 435 | 1, 1, 0, |
| 436 | doc: /* Return t if OBJECT is a byte-compiled function object. */) |
| 437 | (object) |
| 438 | Lisp_Object object; |
| 439 | { |
| 440 | if (COMPILEDP (object)) |
| 441 | return Qt; |
| 442 | return Qnil; |
| 443 | } |
| 444 | |
| 445 | DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0, |
| 446 | doc: /* Return t if OBJECT is a character (an integer) or a string. */) |
| 447 | (object) |
| 448 | register Lisp_Object object; |
| 449 | { |
| 450 | if (INTEGERP (object) || STRINGP (object)) |
| 451 | return Qt; |
| 452 | return Qnil; |
| 453 | } |
| 454 | \f |
| 455 | DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0, |
| 456 | doc: /* Return t if OBJECT is an integer. */) |
| 457 | (object) |
| 458 | Lisp_Object object; |
| 459 | { |
| 460 | if (INTEGERP (object)) |
| 461 | return Qt; |
| 462 | return Qnil; |
| 463 | } |
| 464 | |
| 465 | DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p, 1, 1, 0, |
| 466 | doc: /* Return t if OBJECT is an integer or a marker (editor pointer). */) |
| 467 | (object) |
| 468 | register Lisp_Object object; |
| 469 | { |
| 470 | if (MARKERP (object) || INTEGERP (object)) |
| 471 | return Qt; |
| 472 | return Qnil; |
| 473 | } |
| 474 | |
| 475 | DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0, |
| 476 | doc: /* Return t if OBJECT is a nonnegative integer. */) |
| 477 | (object) |
| 478 | Lisp_Object object; |
| 479 | { |
| 480 | if (NATNUMP (object)) |
| 481 | return Qt; |
| 482 | return Qnil; |
| 483 | } |
| 484 | |
| 485 | DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0, |
| 486 | doc: /* Return t if OBJECT is a number (floating point or integer). */) |
| 487 | (object) |
| 488 | Lisp_Object object; |
| 489 | { |
| 490 | if (NUMBERP (object)) |
| 491 | return Qt; |
| 492 | else |
| 493 | return Qnil; |
| 494 | } |
| 495 | |
| 496 | DEFUN ("number-or-marker-p", Fnumber_or_marker_p, |
| 497 | Snumber_or_marker_p, 1, 1, 0, |
| 498 | doc: /* Return t if OBJECT is a number or a marker. */) |
| 499 | (object) |
| 500 | Lisp_Object object; |
| 501 | { |
| 502 | if (NUMBERP (object) || MARKERP (object)) |
| 503 | return Qt; |
| 504 | return Qnil; |
| 505 | } |
| 506 | |
| 507 | DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0, |
| 508 | doc: /* Return t if OBJECT is a floating point number. */) |
| 509 | (object) |
| 510 | Lisp_Object object; |
| 511 | { |
| 512 | if (FLOATP (object)) |
| 513 | return Qt; |
| 514 | return Qnil; |
| 515 | } |
| 516 | |
| 517 | \f |
| 518 | /* Extract and set components of lists */ |
| 519 | |
| 520 | DEFUN ("car", Fcar, Scar, 1, 1, 0, |
| 521 | doc: /* Return the car of LIST. If arg is nil, return nil. |
| 522 | Error if arg is not nil and not a cons cell. See also `car-safe'. */) |
| 523 | (list) |
| 524 | register Lisp_Object list; |
| 525 | { |
| 526 | while (1) |
| 527 | { |
| 528 | if (CONSP (list)) |
| 529 | return XCAR (list); |
| 530 | else if (EQ (list, Qnil)) |
| 531 | return Qnil; |
| 532 | else |
| 533 | list = wrong_type_argument (Qlistp, list); |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0, |
| 538 | doc: /* Return the car of OBJECT if it is a cons cell, or else nil. */) |
| 539 | (object) |
| 540 | Lisp_Object object; |
| 541 | { |
| 542 | if (CONSP (object)) |
| 543 | return XCAR (object); |
| 544 | else |
| 545 | return Qnil; |
| 546 | } |
| 547 | |
| 548 | DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0, |
| 549 | doc: /* Return the cdr of LIST. If arg is nil, return nil. |
| 550 | Error if arg is not nil and not a cons cell. See also `cdr-safe'. */) |
| 551 | (list) |
| 552 | register Lisp_Object list; |
| 553 | { |
| 554 | while (1) |
| 555 | { |
| 556 | if (CONSP (list)) |
| 557 | return XCDR (list); |
| 558 | else if (EQ (list, Qnil)) |
| 559 | return Qnil; |
| 560 | else |
| 561 | list = wrong_type_argument (Qlistp, list); |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0, |
| 566 | doc: /* Return the cdr of OBJECT if it is a cons cell, or else nil. */) |
| 567 | (object) |
| 568 | Lisp_Object object; |
| 569 | { |
| 570 | if (CONSP (object)) |
| 571 | return XCDR (object); |
| 572 | else |
| 573 | return Qnil; |
| 574 | } |
| 575 | |
| 576 | DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0, |
| 577 | doc: /* Set the car of CELL to be NEWCAR. Returns NEWCAR. */) |
| 578 | (cell, newcar) |
| 579 | register Lisp_Object cell, newcar; |
| 580 | { |
| 581 | if (!CONSP (cell)) |
| 582 | cell = wrong_type_argument (Qconsp, cell); |
| 583 | |
| 584 | CHECK_IMPURE (cell); |
| 585 | XSETCAR (cell, newcar); |
| 586 | return newcar; |
| 587 | } |
| 588 | |
| 589 | DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0, |
| 590 | doc: /* Set the cdr of CELL to be NEWCDR. Returns NEWCDR. */) |
| 591 | (cell, newcdr) |
| 592 | register Lisp_Object cell, newcdr; |
| 593 | { |
| 594 | if (!CONSP (cell)) |
| 595 | cell = wrong_type_argument (Qconsp, cell); |
| 596 | |
| 597 | CHECK_IMPURE (cell); |
| 598 | XSETCDR (cell, newcdr); |
| 599 | return newcdr; |
| 600 | } |
| 601 | \f |
| 602 | /* Extract and set components of symbols */ |
| 603 | |
| 604 | DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0, |
| 605 | doc: /* Return t if SYMBOL's value is not void. */) |
| 606 | (symbol) |
| 607 | register Lisp_Object symbol; |
| 608 | { |
| 609 | Lisp_Object valcontents; |
| 610 | CHECK_SYMBOL (symbol); |
| 611 | |
| 612 | valcontents = SYMBOL_VALUE (symbol); |
| 613 | |
| 614 | if (BUFFER_LOCAL_VALUEP (valcontents) |
| 615 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 616 | valcontents = swap_in_symval_forwarding (symbol, valcontents); |
| 617 | |
| 618 | return (EQ (valcontents, Qunbound) ? Qnil : Qt); |
| 619 | } |
| 620 | |
| 621 | DEFUN ("fboundp", Ffboundp, Sfboundp, 1, 1, 0, |
| 622 | doc: /* Return t if SYMBOL's function definition is not void. */) |
| 623 | (symbol) |
| 624 | register Lisp_Object symbol; |
| 625 | { |
| 626 | CHECK_SYMBOL (symbol); |
| 627 | return (EQ (XSYMBOL (symbol)->function, Qunbound) ? Qnil : Qt); |
| 628 | } |
| 629 | |
| 630 | DEFUN ("makunbound", Fmakunbound, Smakunbound, 1, 1, 0, |
| 631 | doc: /* Make SYMBOL's value be void. */) |
| 632 | (symbol) |
| 633 | register Lisp_Object symbol; |
| 634 | { |
| 635 | CHECK_SYMBOL (symbol); |
| 636 | if (XSYMBOL (symbol)->constant) |
| 637 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); |
| 638 | Fset (symbol, Qunbound); |
| 639 | return symbol; |
| 640 | } |
| 641 | |
| 642 | DEFUN ("fmakunbound", Ffmakunbound, Sfmakunbound, 1, 1, 0, |
| 643 | doc: /* Make SYMBOL's function definition be void. */) |
| 644 | (symbol) |
| 645 | register Lisp_Object symbol; |
| 646 | { |
| 647 | CHECK_SYMBOL (symbol); |
| 648 | if (NILP (symbol) || EQ (symbol, Qt)) |
| 649 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); |
| 650 | XSYMBOL (symbol)->function = Qunbound; |
| 651 | return symbol; |
| 652 | } |
| 653 | |
| 654 | DEFUN ("symbol-function", Fsymbol_function, Ssymbol_function, 1, 1, 0, |
| 655 | doc: /* Return SYMBOL's function definition. Error if that is void. */) |
| 656 | (symbol) |
| 657 | register Lisp_Object symbol; |
| 658 | { |
| 659 | CHECK_SYMBOL (symbol); |
| 660 | if (EQ (XSYMBOL (symbol)->function, Qunbound)) |
| 661 | return Fsignal (Qvoid_function, Fcons (symbol, Qnil)); |
| 662 | return XSYMBOL (symbol)->function; |
| 663 | } |
| 664 | |
| 665 | DEFUN ("symbol-plist", Fsymbol_plist, Ssymbol_plist, 1, 1, 0, |
| 666 | doc: /* Return SYMBOL's property list. */) |
| 667 | (symbol) |
| 668 | register Lisp_Object symbol; |
| 669 | { |
| 670 | CHECK_SYMBOL (symbol); |
| 671 | return XSYMBOL (symbol)->plist; |
| 672 | } |
| 673 | |
| 674 | DEFUN ("symbol-name", Fsymbol_name, Ssymbol_name, 1, 1, 0, |
| 675 | doc: /* Return SYMBOL's name, a string. */) |
| 676 | (symbol) |
| 677 | register Lisp_Object symbol; |
| 678 | { |
| 679 | register Lisp_Object name; |
| 680 | |
| 681 | CHECK_SYMBOL (symbol); |
| 682 | name = SYMBOL_NAME (symbol); |
| 683 | return name; |
| 684 | } |
| 685 | |
| 686 | DEFUN ("fset", Ffset, Sfset, 2, 2, 0, |
| 687 | doc: /* Set SYMBOL's function definition to DEFINITION, and return DEFINITION. */) |
| 688 | (symbol, definition) |
| 689 | register Lisp_Object symbol, definition; |
| 690 | { |
| 691 | CHECK_SYMBOL (symbol); |
| 692 | if (NILP (symbol) || EQ (symbol, Qt)) |
| 693 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); |
| 694 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (symbol)->function, Qunbound)) |
| 695 | Vautoload_queue = Fcons (Fcons (symbol, XSYMBOL (symbol)->function), |
| 696 | Vautoload_queue); |
| 697 | XSYMBOL (symbol)->function = definition; |
| 698 | /* Handle automatic advice activation */ |
| 699 | if (CONSP (XSYMBOL (symbol)->plist) && !NILP (Fget (symbol, Qad_advice_info))) |
| 700 | { |
| 701 | call2 (Qad_activate_internal, symbol, Qnil); |
| 702 | definition = XSYMBOL (symbol)->function; |
| 703 | } |
| 704 | return definition; |
| 705 | } |
| 706 | |
| 707 | extern Lisp_Object Qfunction_documentation; |
| 708 | |
| 709 | DEFUN ("defalias", Fdefalias, Sdefalias, 2, 3, 0, |
| 710 | doc: /* Set SYMBOL's function definition to DEFINITION, and return DEFINITION. |
| 711 | Associates the function with the current load file, if any. |
| 712 | The optional third argument DOCSTRING specifies the documentation string |
| 713 | for SYMBOL; if it is omitted or nil, SYMBOL uses the documentation string |
| 714 | determined by DEFINITION. */) |
| 715 | (symbol, definition, docstring) |
| 716 | register Lisp_Object symbol, definition, docstring; |
| 717 | { |
| 718 | definition = Ffset (symbol, definition); |
| 719 | LOADHIST_ATTACH (symbol); |
| 720 | if (!NILP (docstring)) |
| 721 | Fput (symbol, Qfunction_documentation, docstring); |
| 722 | return definition; |
| 723 | } |
| 724 | |
| 725 | DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0, |
| 726 | doc: /* Set SYMBOL's property list to NEWVAL, and return NEWVAL. */) |
| 727 | (symbol, newplist) |
| 728 | register Lisp_Object symbol, newplist; |
| 729 | { |
| 730 | CHECK_SYMBOL (symbol); |
| 731 | XSYMBOL (symbol)->plist = newplist; |
| 732 | return newplist; |
| 733 | } |
| 734 | |
| 735 | DEFUN ("subr-arity", Fsubr_arity, Ssubr_arity, 1, 1, 0, |
| 736 | doc: /* Return minimum and maximum number of args allowed for SUBR. |
| 737 | SUBR must be a built-in function. |
| 738 | The returned value is a pair (MIN . MAX). MIN is the minimum number |
| 739 | of args. MAX is the maximum number or the symbol `many', for a |
| 740 | function with `&rest' args, or `unevalled' for a special form. */) |
| 741 | (subr) |
| 742 | Lisp_Object subr; |
| 743 | { |
| 744 | short minargs, maxargs; |
| 745 | if (!SUBRP (subr)) |
| 746 | wrong_type_argument (Qsubrp, subr); |
| 747 | minargs = XSUBR (subr)->min_args; |
| 748 | maxargs = XSUBR (subr)->max_args; |
| 749 | if (maxargs == MANY) |
| 750 | return Fcons (make_number (minargs), Qmany); |
| 751 | else if (maxargs == UNEVALLED) |
| 752 | return Fcons (make_number (minargs), Qunevalled); |
| 753 | else |
| 754 | return Fcons (make_number (minargs), make_number (maxargs)); |
| 755 | } |
| 756 | |
| 757 | DEFUN ("subr-interactive-form", Fsubr_interactive_form, Ssubr_interactive_form, 1, 1, 0, |
| 758 | doc: /* Return the interactive form of SUBR or nil if none. |
| 759 | SUBR must be a built-in function. Value, if non-nil, is a list |
| 760 | \(interactive SPEC). */) |
| 761 | (subr) |
| 762 | Lisp_Object subr; |
| 763 | { |
| 764 | if (!SUBRP (subr)) |
| 765 | wrong_type_argument (Qsubrp, subr); |
| 766 | if (XSUBR (subr)->prompt) |
| 767 | return list2 (Qinteractive, build_string (XSUBR (subr)->prompt)); |
| 768 | return Qnil; |
| 769 | } |
| 770 | |
| 771 | \f |
| 772 | /*********************************************************************** |
| 773 | Getting and Setting Values of Symbols |
| 774 | ***********************************************************************/ |
| 775 | |
| 776 | /* Return the symbol holding SYMBOL's value. Signal |
| 777 | `cyclic-variable-indirection' if SYMBOL's chain of variable |
| 778 | indirections contains a loop. */ |
| 779 | |
| 780 | Lisp_Object |
| 781 | indirect_variable (symbol) |
| 782 | Lisp_Object symbol; |
| 783 | { |
| 784 | Lisp_Object tortoise, hare; |
| 785 | |
| 786 | hare = tortoise = symbol; |
| 787 | |
| 788 | while (XSYMBOL (hare)->indirect_variable) |
| 789 | { |
| 790 | hare = XSYMBOL (hare)->value; |
| 791 | if (!XSYMBOL (hare)->indirect_variable) |
| 792 | break; |
| 793 | |
| 794 | hare = XSYMBOL (hare)->value; |
| 795 | tortoise = XSYMBOL (tortoise)->value; |
| 796 | |
| 797 | if (EQ (hare, tortoise)) |
| 798 | Fsignal (Qcyclic_variable_indirection, Fcons (symbol, Qnil)); |
| 799 | } |
| 800 | |
| 801 | return hare; |
| 802 | } |
| 803 | |
| 804 | |
| 805 | DEFUN ("indirect-variable", Findirect_variable, Sindirect_variable, 1, 1, 0, |
| 806 | doc: /* Return the variable at the end of OBJECT's variable chain. |
| 807 | If OBJECT is a symbol, follow all variable indirections and return the final |
| 808 | variable. If OBJECT is not a symbol, just return it. |
| 809 | Signal a cyclic-variable-indirection error if there is a loop in the |
| 810 | variable chain of symbols. */) |
| 811 | (object) |
| 812 | Lisp_Object object; |
| 813 | { |
| 814 | if (SYMBOLP (object)) |
| 815 | object = indirect_variable (object); |
| 816 | return object; |
| 817 | } |
| 818 | |
| 819 | |
| 820 | /* Given the raw contents of a symbol value cell, |
| 821 | return the Lisp value of the symbol. |
| 822 | This does not handle buffer-local variables; use |
| 823 | swap_in_symval_forwarding for that. */ |
| 824 | |
| 825 | Lisp_Object |
| 826 | do_symval_forwarding (valcontents) |
| 827 | register Lisp_Object valcontents; |
| 828 | { |
| 829 | register Lisp_Object val; |
| 830 | int offset; |
| 831 | if (MISCP (valcontents)) |
| 832 | switch (XMISCTYPE (valcontents)) |
| 833 | { |
| 834 | case Lisp_Misc_Intfwd: |
| 835 | XSETINT (val, *XINTFWD (valcontents)->intvar); |
| 836 | return val; |
| 837 | |
| 838 | case Lisp_Misc_Boolfwd: |
| 839 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); |
| 840 | |
| 841 | case Lisp_Misc_Objfwd: |
| 842 | return *XOBJFWD (valcontents)->objvar; |
| 843 | |
| 844 | case Lisp_Misc_Buffer_Objfwd: |
| 845 | offset = XBUFFER_OBJFWD (valcontents)->offset; |
| 846 | return PER_BUFFER_VALUE (current_buffer, offset); |
| 847 | |
| 848 | case Lisp_Misc_Kboard_Objfwd: |
| 849 | offset = XKBOARD_OBJFWD (valcontents)->offset; |
| 850 | return *(Lisp_Object *)(offset + (char *)current_kboard); |
| 851 | } |
| 852 | return valcontents; |
| 853 | } |
| 854 | |
| 855 | /* Store NEWVAL into SYMBOL, where VALCONTENTS is found in the value cell |
| 856 | of SYMBOL. If SYMBOL is buffer-local, VALCONTENTS should be the |
| 857 | buffer-independent contents of the value cell: forwarded just one |
| 858 | step past the buffer-localness. |
| 859 | |
| 860 | BUF non-zero means set the value in buffer BUF instead of the |
| 861 | current buffer. This only plays a role for per-buffer variables. */ |
| 862 | |
| 863 | void |
| 864 | store_symval_forwarding (symbol, valcontents, newval, buf) |
| 865 | Lisp_Object symbol; |
| 866 | register Lisp_Object valcontents, newval; |
| 867 | struct buffer *buf; |
| 868 | { |
| 869 | switch (SWITCH_ENUM_CAST (XTYPE (valcontents))) |
| 870 | { |
| 871 | case Lisp_Misc: |
| 872 | switch (XMISCTYPE (valcontents)) |
| 873 | { |
| 874 | case Lisp_Misc_Intfwd: |
| 875 | CHECK_NUMBER (newval); |
| 876 | *XINTFWD (valcontents)->intvar = XINT (newval); |
| 877 | if (*XINTFWD (valcontents)->intvar != XINT (newval)) |
| 878 | error ("Value out of range for variable `%s'", |
| 879 | SDATA (SYMBOL_NAME (symbol))); |
| 880 | break; |
| 881 | |
| 882 | case Lisp_Misc_Boolfwd: |
| 883 | *XBOOLFWD (valcontents)->boolvar = NILP (newval) ? 0 : 1; |
| 884 | break; |
| 885 | |
| 886 | case Lisp_Misc_Objfwd: |
| 887 | *XOBJFWD (valcontents)->objvar = newval; |
| 888 | break; |
| 889 | |
| 890 | case Lisp_Misc_Buffer_Objfwd: |
| 891 | { |
| 892 | int offset = XBUFFER_OBJFWD (valcontents)->offset; |
| 893 | Lisp_Object type; |
| 894 | |
| 895 | type = PER_BUFFER_TYPE (offset); |
| 896 | if (XINT (type) == -1) |
| 897 | error ("Variable %s is read-only", SDATA (SYMBOL_NAME (symbol))); |
| 898 | |
| 899 | if (! NILP (type) && ! NILP (newval) |
| 900 | && XTYPE (newval) != XINT (type)) |
| 901 | buffer_slot_type_mismatch (offset); |
| 902 | |
| 903 | if (buf == NULL) |
| 904 | buf = current_buffer; |
| 905 | PER_BUFFER_VALUE (buf, offset) = newval; |
| 906 | } |
| 907 | break; |
| 908 | |
| 909 | case Lisp_Misc_Kboard_Objfwd: |
| 910 | { |
| 911 | char *base = (char *) current_kboard; |
| 912 | char *p = base + XKBOARD_OBJFWD (valcontents)->offset; |
| 913 | *(Lisp_Object *) p = newval; |
| 914 | } |
| 915 | break; |
| 916 | |
| 917 | default: |
| 918 | goto def; |
| 919 | } |
| 920 | break; |
| 921 | |
| 922 | default: |
| 923 | def: |
| 924 | valcontents = SYMBOL_VALUE (symbol); |
| 925 | if (BUFFER_LOCAL_VALUEP (valcontents) |
| 926 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 927 | XBUFFER_LOCAL_VALUE (valcontents)->realvalue = newval; |
| 928 | else |
| 929 | SET_SYMBOL_VALUE (symbol, newval); |
| 930 | } |
| 931 | } |
| 932 | |
| 933 | /* Set up SYMBOL to refer to its global binding. |
| 934 | This makes it safe to alter the status of other bindings. */ |
| 935 | |
| 936 | void |
| 937 | swap_in_global_binding (symbol) |
| 938 | Lisp_Object symbol; |
| 939 | { |
| 940 | Lisp_Object valcontents, cdr; |
| 941 | |
| 942 | valcontents = SYMBOL_VALUE (symbol); |
| 943 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
| 944 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 945 | abort (); |
| 946 | cdr = XBUFFER_LOCAL_VALUE (valcontents)->cdr; |
| 947 | |
| 948 | /* Unload the previously loaded binding. */ |
| 949 | Fsetcdr (XCAR (cdr), |
| 950 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->realvalue)); |
| 951 | |
| 952 | /* Select the global binding in the symbol. */ |
| 953 | XSETCAR (cdr, cdr); |
| 954 | store_symval_forwarding (symbol, valcontents, XCDR (cdr), NULL); |
| 955 | |
| 956 | /* Indicate that the global binding is set up now. */ |
| 957 | XBUFFER_LOCAL_VALUE (valcontents)->frame = Qnil; |
| 958 | XBUFFER_LOCAL_VALUE (valcontents)->buffer = Qnil; |
| 959 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 0; |
| 960 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0; |
| 961 | } |
| 962 | |
| 963 | /* Set up the buffer-local symbol SYMBOL for validity in the current buffer. |
| 964 | VALCONTENTS is the contents of its value cell, |
| 965 | which points to a struct Lisp_Buffer_Local_Value. |
| 966 | |
| 967 | Return the value forwarded one step past the buffer-local stage. |
| 968 | This could be another forwarding pointer. */ |
| 969 | |
| 970 | static Lisp_Object |
| 971 | swap_in_symval_forwarding (symbol, valcontents) |
| 972 | Lisp_Object symbol, valcontents; |
| 973 | { |
| 974 | register Lisp_Object tem1; |
| 975 | |
| 976 | tem1 = XBUFFER_LOCAL_VALUE (valcontents)->buffer; |
| 977 | |
| 978 | if (NILP (tem1) |
| 979 | || current_buffer != XBUFFER (tem1) |
| 980 | || (XBUFFER_LOCAL_VALUE (valcontents)->check_frame |
| 981 | && ! EQ (selected_frame, XBUFFER_LOCAL_VALUE (valcontents)->frame))) |
| 982 | { |
| 983 | if (XSYMBOL (symbol)->indirect_variable) |
| 984 | symbol = indirect_variable (symbol); |
| 985 | |
| 986 | /* Unload the previously loaded binding. */ |
| 987 | tem1 = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr); |
| 988 | Fsetcdr (tem1, |
| 989 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->realvalue)); |
| 990 | /* Choose the new binding. */ |
| 991 | tem1 = assq_no_quit (symbol, current_buffer->local_var_alist); |
| 992 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 0; |
| 993 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0; |
| 994 | if (NILP (tem1)) |
| 995 | { |
| 996 | if (XBUFFER_LOCAL_VALUE (valcontents)->check_frame) |
| 997 | tem1 = assq_no_quit (symbol, XFRAME (selected_frame)->param_alist); |
| 998 | if (! NILP (tem1)) |
| 999 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 1; |
| 1000 | else |
| 1001 | tem1 = XBUFFER_LOCAL_VALUE (valcontents)->cdr; |
| 1002 | } |
| 1003 | else |
| 1004 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 1; |
| 1005 | |
| 1006 | /* Load the new binding. */ |
| 1007 | XSETCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr, tem1); |
| 1008 | XSETBUFFER (XBUFFER_LOCAL_VALUE (valcontents)->buffer, current_buffer); |
| 1009 | XBUFFER_LOCAL_VALUE (valcontents)->frame = selected_frame; |
| 1010 | store_symval_forwarding (symbol, |
| 1011 | XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
| 1012 | Fcdr (tem1), NULL); |
| 1013 | } |
| 1014 | return XBUFFER_LOCAL_VALUE (valcontents)->realvalue; |
| 1015 | } |
| 1016 | \f |
| 1017 | /* Find the value of a symbol, returning Qunbound if it's not bound. |
| 1018 | This is helpful for code which just wants to get a variable's value |
| 1019 | if it has one, without signaling an error. |
| 1020 | Note that it must not be possible to quit |
| 1021 | within this function. Great care is required for this. */ |
| 1022 | |
| 1023 | Lisp_Object |
| 1024 | find_symbol_value (symbol) |
| 1025 | Lisp_Object symbol; |
| 1026 | { |
| 1027 | register Lisp_Object valcontents; |
| 1028 | register Lisp_Object val; |
| 1029 | |
| 1030 | CHECK_SYMBOL (symbol); |
| 1031 | valcontents = SYMBOL_VALUE (symbol); |
| 1032 | |
| 1033 | if (BUFFER_LOCAL_VALUEP (valcontents) |
| 1034 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1035 | valcontents = swap_in_symval_forwarding (symbol, valcontents); |
| 1036 | |
| 1037 | if (MISCP (valcontents)) |
| 1038 | { |
| 1039 | switch (XMISCTYPE (valcontents)) |
| 1040 | { |
| 1041 | case Lisp_Misc_Intfwd: |
| 1042 | XSETINT (val, *XINTFWD (valcontents)->intvar); |
| 1043 | return val; |
| 1044 | |
| 1045 | case Lisp_Misc_Boolfwd: |
| 1046 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); |
| 1047 | |
| 1048 | case Lisp_Misc_Objfwd: |
| 1049 | return *XOBJFWD (valcontents)->objvar; |
| 1050 | |
| 1051 | case Lisp_Misc_Buffer_Objfwd: |
| 1052 | return PER_BUFFER_VALUE (current_buffer, |
| 1053 | XBUFFER_OBJFWD (valcontents)->offset); |
| 1054 | |
| 1055 | case Lisp_Misc_Kboard_Objfwd: |
| 1056 | return *(Lisp_Object *)(XKBOARD_OBJFWD (valcontents)->offset |
| 1057 | + (char *)current_kboard); |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | return valcontents; |
| 1062 | } |
| 1063 | |
| 1064 | DEFUN ("symbol-value", Fsymbol_value, Ssymbol_value, 1, 1, 0, |
| 1065 | doc: /* Return SYMBOL's value. Error if that is void. */) |
| 1066 | (symbol) |
| 1067 | Lisp_Object symbol; |
| 1068 | { |
| 1069 | Lisp_Object val; |
| 1070 | |
| 1071 | val = find_symbol_value (symbol); |
| 1072 | if (EQ (val, Qunbound)) |
| 1073 | return Fsignal (Qvoid_variable, Fcons (symbol, Qnil)); |
| 1074 | else |
| 1075 | return val; |
| 1076 | } |
| 1077 | |
| 1078 | DEFUN ("set", Fset, Sset, 2, 2, 0, |
| 1079 | doc: /* Set SYMBOL's value to NEWVAL, and return NEWVAL. */) |
| 1080 | (symbol, newval) |
| 1081 | register Lisp_Object symbol, newval; |
| 1082 | { |
| 1083 | return set_internal (symbol, newval, current_buffer, 0); |
| 1084 | } |
| 1085 | |
| 1086 | /* Return 1 if SYMBOL currently has a let-binding |
| 1087 | which was made in the buffer that is now current. */ |
| 1088 | |
| 1089 | static int |
| 1090 | let_shadows_buffer_binding_p (symbol) |
| 1091 | Lisp_Object symbol; |
| 1092 | { |
| 1093 | struct specbinding *p; |
| 1094 | |
| 1095 | for (p = specpdl_ptr - 1; p >= specpdl; p--) |
| 1096 | if (p->func == NULL |
| 1097 | && CONSP (p->symbol)) |
| 1098 | { |
| 1099 | Lisp_Object let_bound_symbol = XCAR (p->symbol); |
| 1100 | if ((EQ (symbol, let_bound_symbol) |
| 1101 | || (XSYMBOL (let_bound_symbol)->indirect_variable |
| 1102 | && EQ (symbol, indirect_variable (let_bound_symbol)))) |
| 1103 | && XBUFFER (XCDR (XCDR (p->symbol))) == current_buffer) |
| 1104 | break; |
| 1105 | } |
| 1106 | |
| 1107 | return p >= specpdl; |
| 1108 | } |
| 1109 | |
| 1110 | /* Store the value NEWVAL into SYMBOL. |
| 1111 | If buffer-locality is an issue, BUF specifies which buffer to use. |
| 1112 | (0 stands for the current buffer.) |
| 1113 | |
| 1114 | If BINDFLAG is zero, then if this symbol is supposed to become |
| 1115 | local in every buffer where it is set, then we make it local. |
| 1116 | If BINDFLAG is nonzero, we don't do that. */ |
| 1117 | |
| 1118 | Lisp_Object |
| 1119 | set_internal (symbol, newval, buf, bindflag) |
| 1120 | register Lisp_Object symbol, newval; |
| 1121 | struct buffer *buf; |
| 1122 | int bindflag; |
| 1123 | { |
| 1124 | int voide = EQ (newval, Qunbound); |
| 1125 | |
| 1126 | register Lisp_Object valcontents, innercontents, tem1, current_alist_element; |
| 1127 | |
| 1128 | if (buf == 0) |
| 1129 | buf = current_buffer; |
| 1130 | |
| 1131 | /* If restoring in a dead buffer, do nothing. */ |
| 1132 | if (NILP (buf->name)) |
| 1133 | return newval; |
| 1134 | |
| 1135 | CHECK_SYMBOL (symbol); |
| 1136 | if (SYMBOL_CONSTANT_P (symbol) |
| 1137 | && (NILP (Fkeywordp (symbol)) |
| 1138 | || !EQ (newval, SYMBOL_VALUE (symbol)))) |
| 1139 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); |
| 1140 | |
| 1141 | innercontents = valcontents = SYMBOL_VALUE (symbol); |
| 1142 | |
| 1143 | if (BUFFER_OBJFWDP (valcontents)) |
| 1144 | { |
| 1145 | int offset = XBUFFER_OBJFWD (valcontents)->offset; |
| 1146 | int idx = PER_BUFFER_IDX (offset); |
| 1147 | if (idx > 0 |
| 1148 | && !bindflag |
| 1149 | && !let_shadows_buffer_binding_p (symbol)) |
| 1150 | SET_PER_BUFFER_VALUE_P (buf, idx, 1); |
| 1151 | } |
| 1152 | else if (BUFFER_LOCAL_VALUEP (valcontents) |
| 1153 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1154 | { |
| 1155 | /* valcontents is a struct Lisp_Buffer_Local_Value. */ |
| 1156 | if (XSYMBOL (symbol)->indirect_variable) |
| 1157 | symbol = indirect_variable (symbol); |
| 1158 | |
| 1159 | /* What binding is loaded right now? */ |
| 1160 | current_alist_element |
| 1161 | = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr); |
| 1162 | |
| 1163 | /* If the current buffer is not the buffer whose binding is |
| 1164 | loaded, or if there may be frame-local bindings and the frame |
| 1165 | isn't the right one, or if it's a Lisp_Buffer_Local_Value and |
| 1166 | the default binding is loaded, the loaded binding may be the |
| 1167 | wrong one. */ |
| 1168 | if (!BUFFERP (XBUFFER_LOCAL_VALUE (valcontents)->buffer) |
| 1169 | || buf != XBUFFER (XBUFFER_LOCAL_VALUE (valcontents)->buffer) |
| 1170 | || (XBUFFER_LOCAL_VALUE (valcontents)->check_frame |
| 1171 | && !EQ (selected_frame, XBUFFER_LOCAL_VALUE (valcontents)->frame)) |
| 1172 | || (BUFFER_LOCAL_VALUEP (valcontents) |
| 1173 | && EQ (XCAR (current_alist_element), |
| 1174 | current_alist_element))) |
| 1175 | { |
| 1176 | /* The currently loaded binding is not necessarily valid. |
| 1177 | We need to unload it, and choose a new binding. */ |
| 1178 | |
| 1179 | /* Write out `realvalue' to the old loaded binding. */ |
| 1180 | Fsetcdr (current_alist_element, |
| 1181 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->realvalue)); |
| 1182 | |
| 1183 | /* Find the new binding. */ |
| 1184 | tem1 = Fassq (symbol, buf->local_var_alist); |
| 1185 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 1; |
| 1186 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 0; |
| 1187 | |
| 1188 | if (NILP (tem1)) |
| 1189 | { |
| 1190 | /* This buffer still sees the default value. */ |
| 1191 | |
| 1192 | /* If the variable is a Lisp_Some_Buffer_Local_Value, |
| 1193 | or if this is `let' rather than `set', |
| 1194 | make CURRENT-ALIST-ELEMENT point to itself, |
| 1195 | indicating that we're seeing the default value. |
| 1196 | Likewise if the variable has been let-bound |
| 1197 | in the current buffer. */ |
| 1198 | if (bindflag || SOME_BUFFER_LOCAL_VALUEP (valcontents) |
| 1199 | || let_shadows_buffer_binding_p (symbol)) |
| 1200 | { |
| 1201 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0; |
| 1202 | |
| 1203 | if (XBUFFER_LOCAL_VALUE (valcontents)->check_frame) |
| 1204 | tem1 = Fassq (symbol, |
| 1205 | XFRAME (selected_frame)->param_alist); |
| 1206 | |
| 1207 | if (! NILP (tem1)) |
| 1208 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 1; |
| 1209 | else |
| 1210 | tem1 = XBUFFER_LOCAL_VALUE (valcontents)->cdr; |
| 1211 | } |
| 1212 | /* If it's a Lisp_Buffer_Local_Value, being set not bound, |
| 1213 | and we're not within a let that was made for this buffer, |
| 1214 | create a new buffer-local binding for the variable. |
| 1215 | That means, give this buffer a new assoc for a local value |
| 1216 | and load that binding. */ |
| 1217 | else |
| 1218 | { |
| 1219 | tem1 = Fcons (symbol, XCDR (current_alist_element)); |
| 1220 | buf->local_var_alist |
| 1221 | = Fcons (tem1, buf->local_var_alist); |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | /* Record which binding is now loaded. */ |
| 1226 | XSETCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr, |
| 1227 | tem1); |
| 1228 | |
| 1229 | /* Set `buffer' and `frame' slots for thebinding now loaded. */ |
| 1230 | XSETBUFFER (XBUFFER_LOCAL_VALUE (valcontents)->buffer, buf); |
| 1231 | XBUFFER_LOCAL_VALUE (valcontents)->frame = selected_frame; |
| 1232 | } |
| 1233 | innercontents = XBUFFER_LOCAL_VALUE (valcontents)->realvalue; |
| 1234 | } |
| 1235 | |
| 1236 | /* If storing void (making the symbol void), forward only through |
| 1237 | buffer-local indicator, not through Lisp_Objfwd, etc. */ |
| 1238 | if (voide) |
| 1239 | store_symval_forwarding (symbol, Qnil, newval, buf); |
| 1240 | else |
| 1241 | store_symval_forwarding (symbol, innercontents, newval, buf); |
| 1242 | |
| 1243 | /* If we just set a variable whose current binding is frame-local, |
| 1244 | store the new value in the frame parameter too. */ |
| 1245 | |
| 1246 | if (BUFFER_LOCAL_VALUEP (valcontents) |
| 1247 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1248 | { |
| 1249 | /* What binding is loaded right now? */ |
| 1250 | current_alist_element |
| 1251 | = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr); |
| 1252 | |
| 1253 | /* If the current buffer is not the buffer whose binding is |
| 1254 | loaded, or if there may be frame-local bindings and the frame |
| 1255 | isn't the right one, or if it's a Lisp_Buffer_Local_Value and |
| 1256 | the default binding is loaded, the loaded binding may be the |
| 1257 | wrong one. */ |
| 1258 | if (XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame) |
| 1259 | XSETCDR (current_alist_element, newval); |
| 1260 | } |
| 1261 | |
| 1262 | return newval; |
| 1263 | } |
| 1264 | \f |
| 1265 | /* Access or set a buffer-local symbol's default value. */ |
| 1266 | |
| 1267 | /* Return the default value of SYMBOL, but don't check for voidness. |
| 1268 | Return Qunbound if it is void. */ |
| 1269 | |
| 1270 | Lisp_Object |
| 1271 | default_value (symbol) |
| 1272 | Lisp_Object symbol; |
| 1273 | { |
| 1274 | register Lisp_Object valcontents; |
| 1275 | |
| 1276 | CHECK_SYMBOL (symbol); |
| 1277 | valcontents = SYMBOL_VALUE (symbol); |
| 1278 | |
| 1279 | /* For a built-in buffer-local variable, get the default value |
| 1280 | rather than letting do_symval_forwarding get the current value. */ |
| 1281 | if (BUFFER_OBJFWDP (valcontents)) |
| 1282 | { |
| 1283 | int offset = XBUFFER_OBJFWD (valcontents)->offset; |
| 1284 | if (PER_BUFFER_IDX (offset) != 0) |
| 1285 | return PER_BUFFER_DEFAULT (offset); |
| 1286 | } |
| 1287 | |
| 1288 | /* Handle user-created local variables. */ |
| 1289 | if (BUFFER_LOCAL_VALUEP (valcontents) |
| 1290 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1291 | { |
| 1292 | /* If var is set up for a buffer that lacks a local value for it, |
| 1293 | the current value is nominally the default value. |
| 1294 | But the `realvalue' slot may be more up to date, since |
| 1295 | ordinary setq stores just that slot. So use that. */ |
| 1296 | Lisp_Object current_alist_element, alist_element_car; |
| 1297 | current_alist_element |
| 1298 | = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr); |
| 1299 | alist_element_car = XCAR (current_alist_element); |
| 1300 | if (EQ (alist_element_car, current_alist_element)) |
| 1301 | return do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->realvalue); |
| 1302 | else |
| 1303 | return XCDR (XBUFFER_LOCAL_VALUE (valcontents)->cdr); |
| 1304 | } |
| 1305 | /* For other variables, get the current value. */ |
| 1306 | return do_symval_forwarding (valcontents); |
| 1307 | } |
| 1308 | |
| 1309 | DEFUN ("default-boundp", Fdefault_boundp, Sdefault_boundp, 1, 1, 0, |
| 1310 | doc: /* Return t if SYMBOL has a non-void default value. |
| 1311 | This is the value that is seen in buffers that do not have their own values |
| 1312 | for this variable. */) |
| 1313 | (symbol) |
| 1314 | Lisp_Object symbol; |
| 1315 | { |
| 1316 | register Lisp_Object value; |
| 1317 | |
| 1318 | value = default_value (symbol); |
| 1319 | return (EQ (value, Qunbound) ? Qnil : Qt); |
| 1320 | } |
| 1321 | |
| 1322 | DEFUN ("default-value", Fdefault_value, Sdefault_value, 1, 1, 0, |
| 1323 | doc: /* Return SYMBOL's default value. |
| 1324 | This is the value that is seen in buffers that do not have their own values |
| 1325 | for this variable. The default value is meaningful for variables with |
| 1326 | local bindings in certain buffers. */) |
| 1327 | (symbol) |
| 1328 | Lisp_Object symbol; |
| 1329 | { |
| 1330 | register Lisp_Object value; |
| 1331 | |
| 1332 | value = default_value (symbol); |
| 1333 | if (EQ (value, Qunbound)) |
| 1334 | return Fsignal (Qvoid_variable, Fcons (symbol, Qnil)); |
| 1335 | return value; |
| 1336 | } |
| 1337 | |
| 1338 | DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0, |
| 1339 | doc: /* Set SYMBOL's default value to VAL. SYMBOL and VAL are evaluated. |
| 1340 | The default value is seen in buffers that do not have their own values |
| 1341 | for this variable. */) |
| 1342 | (symbol, value) |
| 1343 | Lisp_Object symbol, value; |
| 1344 | { |
| 1345 | register Lisp_Object valcontents, current_alist_element, alist_element_buffer; |
| 1346 | |
| 1347 | CHECK_SYMBOL (symbol); |
| 1348 | valcontents = SYMBOL_VALUE (symbol); |
| 1349 | |
| 1350 | /* Handle variables like case-fold-search that have special slots |
| 1351 | in the buffer. Make them work apparently like Lisp_Buffer_Local_Value |
| 1352 | variables. */ |
| 1353 | if (BUFFER_OBJFWDP (valcontents)) |
| 1354 | { |
| 1355 | int offset = XBUFFER_OBJFWD (valcontents)->offset; |
| 1356 | int idx = PER_BUFFER_IDX (offset); |
| 1357 | |
| 1358 | PER_BUFFER_DEFAULT (offset) = value; |
| 1359 | |
| 1360 | /* If this variable is not always local in all buffers, |
| 1361 | set it in the buffers that don't nominally have a local value. */ |
| 1362 | if (idx > 0) |
| 1363 | { |
| 1364 | struct buffer *b; |
| 1365 | |
| 1366 | for (b = all_buffers; b; b = b->next) |
| 1367 | if (!PER_BUFFER_VALUE_P (b, idx)) |
| 1368 | PER_BUFFER_VALUE (b, offset) = value; |
| 1369 | } |
| 1370 | return value; |
| 1371 | } |
| 1372 | |
| 1373 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
| 1374 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1375 | return Fset (symbol, value); |
| 1376 | |
| 1377 | /* Store new value into the DEFAULT-VALUE slot. */ |
| 1378 | XSETCDR (XBUFFER_LOCAL_VALUE (valcontents)->cdr, value); |
| 1379 | |
| 1380 | /* If the default binding is now loaded, set the REALVALUE slot too. */ |
| 1381 | current_alist_element |
| 1382 | = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr); |
| 1383 | alist_element_buffer = Fcar (current_alist_element); |
| 1384 | if (EQ (alist_element_buffer, current_alist_element)) |
| 1385 | store_symval_forwarding (symbol, |
| 1386 | XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
| 1387 | value, NULL); |
| 1388 | |
| 1389 | return value; |
| 1390 | } |
| 1391 | |
| 1392 | DEFUN ("setq-default", Fsetq_default, Ssetq_default, 2, UNEVALLED, 0, |
| 1393 | doc: /* Set the default value of variable VAR to VALUE. |
| 1394 | VAR, the variable name, is literal (not evaluated); |
| 1395 | VALUE is an expression and it is evaluated. |
| 1396 | The default value of a variable is seen in buffers |
| 1397 | that do not have their own values for the variable. |
| 1398 | |
| 1399 | More generally, you can use multiple variables and values, as in |
| 1400 | (setq-default SYMBOL VALUE SYMBOL VALUE...) |
| 1401 | This sets each SYMBOL's default value to the corresponding VALUE. |
| 1402 | The VALUE for the Nth SYMBOL can refer to the new default values |
| 1403 | of previous SYMs. |
| 1404 | usage: (setq-default SYMBOL VALUE [SYMBOL VALUE...]) */) |
| 1405 | (args) |
| 1406 | Lisp_Object args; |
| 1407 | { |
| 1408 | register Lisp_Object args_left; |
| 1409 | register Lisp_Object val, symbol; |
| 1410 | struct gcpro gcpro1; |
| 1411 | |
| 1412 | if (NILP (args)) |
| 1413 | return Qnil; |
| 1414 | |
| 1415 | args_left = args; |
| 1416 | GCPRO1 (args); |
| 1417 | |
| 1418 | do |
| 1419 | { |
| 1420 | val = Feval (Fcar (Fcdr (args_left))); |
| 1421 | symbol = XCAR (args_left); |
| 1422 | Fset_default (symbol, val); |
| 1423 | args_left = Fcdr (XCDR (args_left)); |
| 1424 | } |
| 1425 | while (!NILP (args_left)); |
| 1426 | |
| 1427 | UNGCPRO; |
| 1428 | return val; |
| 1429 | } |
| 1430 | \f |
| 1431 | /* Lisp functions for creating and removing buffer-local variables. */ |
| 1432 | |
| 1433 | DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local, Smake_variable_buffer_local, |
| 1434 | 1, 1, "vMake Variable Buffer Local: ", |
| 1435 | doc: /* Make VARIABLE become buffer-local whenever it is set. |
| 1436 | At any time, the value for the current buffer is in effect, |
| 1437 | unless the variable has never been set in this buffer, |
| 1438 | in which case the default value is in effect. |
| 1439 | Note that binding the variable with `let', or setting it while |
| 1440 | a `let'-style binding made in this buffer is in effect, |
| 1441 | does not make the variable buffer-local. |
| 1442 | |
| 1443 | The function `default-value' gets the default value and `set-default' sets it. */) |
| 1444 | (variable) |
| 1445 | register Lisp_Object variable; |
| 1446 | { |
| 1447 | register Lisp_Object tem, valcontents, newval; |
| 1448 | |
| 1449 | CHECK_SYMBOL (variable); |
| 1450 | |
| 1451 | valcontents = SYMBOL_VALUE (variable); |
| 1452 | if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents)) |
| 1453 | error ("Symbol %s may not be buffer-local", SDATA (SYMBOL_NAME (variable))); |
| 1454 | |
| 1455 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
| 1456 | return variable; |
| 1457 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1458 | { |
| 1459 | XMISCTYPE (SYMBOL_VALUE (variable)) = Lisp_Misc_Buffer_Local_Value; |
| 1460 | return variable; |
| 1461 | } |
| 1462 | if (EQ (valcontents, Qunbound)) |
| 1463 | SET_SYMBOL_VALUE (variable, Qnil); |
| 1464 | tem = Fcons (Qnil, Fsymbol_value (variable)); |
| 1465 | XSETCAR (tem, tem); |
| 1466 | newval = allocate_misc (); |
| 1467 | XMISCTYPE (newval) = Lisp_Misc_Buffer_Local_Value; |
| 1468 | XBUFFER_LOCAL_VALUE (newval)->realvalue = SYMBOL_VALUE (variable); |
| 1469 | XBUFFER_LOCAL_VALUE (newval)->buffer = Fcurrent_buffer (); |
| 1470 | XBUFFER_LOCAL_VALUE (newval)->frame = Qnil; |
| 1471 | XBUFFER_LOCAL_VALUE (newval)->found_for_buffer = 0; |
| 1472 | XBUFFER_LOCAL_VALUE (newval)->found_for_frame = 0; |
| 1473 | XBUFFER_LOCAL_VALUE (newval)->check_frame = 0; |
| 1474 | XBUFFER_LOCAL_VALUE (newval)->cdr = tem; |
| 1475 | SET_SYMBOL_VALUE (variable, newval); |
| 1476 | return variable; |
| 1477 | } |
| 1478 | |
| 1479 | DEFUN ("make-local-variable", Fmake_local_variable, Smake_local_variable, |
| 1480 | 1, 1, "vMake Local Variable: ", |
| 1481 | doc: /* Make VARIABLE have a separate value in the current buffer. |
| 1482 | Other buffers will continue to share a common default value. |
| 1483 | \(The buffer-local value of VARIABLE starts out as the same value |
| 1484 | VARIABLE previously had. If VARIABLE was void, it remains void.\) |
| 1485 | See also `make-variable-buffer-local'. |
| 1486 | |
| 1487 | If the variable is already arranged to become local when set, |
| 1488 | this function causes a local value to exist for this buffer, |
| 1489 | just as setting the variable would do. |
| 1490 | |
| 1491 | This function returns VARIABLE, and therefore |
| 1492 | (set (make-local-variable 'VARIABLE) VALUE-EXP) |
| 1493 | works. |
| 1494 | |
| 1495 | Do not use `make-local-variable' to make a hook variable buffer-local. |
| 1496 | Instead, use `add-hook' and specify t for the LOCAL argument. */) |
| 1497 | (variable) |
| 1498 | register Lisp_Object variable; |
| 1499 | { |
| 1500 | register Lisp_Object tem, valcontents; |
| 1501 | |
| 1502 | CHECK_SYMBOL (variable); |
| 1503 | |
| 1504 | valcontents = SYMBOL_VALUE (variable); |
| 1505 | if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents)) |
| 1506 | error ("Symbol %s may not be buffer-local", SDATA (SYMBOL_NAME (variable))); |
| 1507 | |
| 1508 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
| 1509 | { |
| 1510 | tem = Fboundp (variable); |
| 1511 | |
| 1512 | /* Make sure the symbol has a local value in this particular buffer, |
| 1513 | by setting it to the same value it already has. */ |
| 1514 | Fset (variable, (EQ (tem, Qt) ? Fsymbol_value (variable) : Qunbound)); |
| 1515 | return variable; |
| 1516 | } |
| 1517 | /* Make sure symbol is set up to hold per-buffer values. */ |
| 1518 | if (!SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1519 | { |
| 1520 | Lisp_Object newval; |
| 1521 | tem = Fcons (Qnil, do_symval_forwarding (valcontents)); |
| 1522 | XSETCAR (tem, tem); |
| 1523 | newval = allocate_misc (); |
| 1524 | XMISCTYPE (newval) = Lisp_Misc_Some_Buffer_Local_Value; |
| 1525 | XBUFFER_LOCAL_VALUE (newval)->realvalue = SYMBOL_VALUE (variable); |
| 1526 | XBUFFER_LOCAL_VALUE (newval)->buffer = Qnil; |
| 1527 | XBUFFER_LOCAL_VALUE (newval)->frame = Qnil; |
| 1528 | XBUFFER_LOCAL_VALUE (newval)->found_for_buffer = 0; |
| 1529 | XBUFFER_LOCAL_VALUE (newval)->found_for_frame = 0; |
| 1530 | XBUFFER_LOCAL_VALUE (newval)->check_frame = 0; |
| 1531 | XBUFFER_LOCAL_VALUE (newval)->cdr = tem; |
| 1532 | SET_SYMBOL_VALUE (variable, newval);; |
| 1533 | } |
| 1534 | /* Make sure this buffer has its own value of symbol. */ |
| 1535 | tem = Fassq (variable, current_buffer->local_var_alist); |
| 1536 | if (NILP (tem)) |
| 1537 | { |
| 1538 | /* Swap out any local binding for some other buffer, and make |
| 1539 | sure the current value is permanently recorded, if it's the |
| 1540 | default value. */ |
| 1541 | find_symbol_value (variable); |
| 1542 | |
| 1543 | current_buffer->local_var_alist |
| 1544 | = Fcons (Fcons (variable, XCDR (XBUFFER_LOCAL_VALUE (SYMBOL_VALUE (variable))->cdr)), |
| 1545 | current_buffer->local_var_alist); |
| 1546 | |
| 1547 | /* Make sure symbol does not think it is set up for this buffer; |
| 1548 | force it to look once again for this buffer's value. */ |
| 1549 | { |
| 1550 | Lisp_Object *pvalbuf; |
| 1551 | |
| 1552 | valcontents = SYMBOL_VALUE (variable); |
| 1553 | |
| 1554 | pvalbuf = &XBUFFER_LOCAL_VALUE (valcontents)->buffer; |
| 1555 | if (current_buffer == XBUFFER (*pvalbuf)) |
| 1556 | *pvalbuf = Qnil; |
| 1557 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0; |
| 1558 | } |
| 1559 | } |
| 1560 | |
| 1561 | /* If the symbol forwards into a C variable, then load the binding |
| 1562 | for this buffer now. If C code modifies the variable before we |
| 1563 | load the binding in, then that new value will clobber the default |
| 1564 | binding the next time we unload it. */ |
| 1565 | valcontents = XBUFFER_LOCAL_VALUE (SYMBOL_VALUE (variable))->realvalue; |
| 1566 | if (INTFWDP (valcontents) || BOOLFWDP (valcontents) || OBJFWDP (valcontents)) |
| 1567 | swap_in_symval_forwarding (variable, SYMBOL_VALUE (variable)); |
| 1568 | |
| 1569 | return variable; |
| 1570 | } |
| 1571 | |
| 1572 | DEFUN ("kill-local-variable", Fkill_local_variable, Skill_local_variable, |
| 1573 | 1, 1, "vKill Local Variable: ", |
| 1574 | doc: /* Make VARIABLE no longer have a separate value in the current buffer. |
| 1575 | From now on the default value will apply in this buffer. */) |
| 1576 | (variable) |
| 1577 | register Lisp_Object variable; |
| 1578 | { |
| 1579 | register Lisp_Object tem, valcontents; |
| 1580 | |
| 1581 | CHECK_SYMBOL (variable); |
| 1582 | |
| 1583 | valcontents = SYMBOL_VALUE (variable); |
| 1584 | |
| 1585 | if (BUFFER_OBJFWDP (valcontents)) |
| 1586 | { |
| 1587 | int offset = XBUFFER_OBJFWD (valcontents)->offset; |
| 1588 | int idx = PER_BUFFER_IDX (offset); |
| 1589 | |
| 1590 | if (idx > 0) |
| 1591 | { |
| 1592 | SET_PER_BUFFER_VALUE_P (current_buffer, idx, 0); |
| 1593 | PER_BUFFER_VALUE (current_buffer, offset) |
| 1594 | = PER_BUFFER_DEFAULT (offset); |
| 1595 | } |
| 1596 | return variable; |
| 1597 | } |
| 1598 | |
| 1599 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
| 1600 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1601 | return variable; |
| 1602 | |
| 1603 | /* Get rid of this buffer's alist element, if any. */ |
| 1604 | |
| 1605 | tem = Fassq (variable, current_buffer->local_var_alist); |
| 1606 | if (!NILP (tem)) |
| 1607 | current_buffer->local_var_alist |
| 1608 | = Fdelq (tem, current_buffer->local_var_alist); |
| 1609 | |
| 1610 | /* If the symbol is set up with the current buffer's binding |
| 1611 | loaded, recompute its value. We have to do it now, or else |
| 1612 | forwarded objects won't work right. */ |
| 1613 | { |
| 1614 | Lisp_Object *pvalbuf; |
| 1615 | valcontents = SYMBOL_VALUE (variable); |
| 1616 | pvalbuf = &XBUFFER_LOCAL_VALUE (valcontents)->buffer; |
| 1617 | if (current_buffer == XBUFFER (*pvalbuf)) |
| 1618 | { |
| 1619 | *pvalbuf = Qnil; |
| 1620 | XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0; |
| 1621 | find_symbol_value (variable); |
| 1622 | } |
| 1623 | } |
| 1624 | |
| 1625 | return variable; |
| 1626 | } |
| 1627 | |
| 1628 | /* Lisp functions for creating and removing buffer-local variables. */ |
| 1629 | |
| 1630 | DEFUN ("make-variable-frame-local", Fmake_variable_frame_local, Smake_variable_frame_local, |
| 1631 | 1, 1, "vMake Variable Frame Local: ", |
| 1632 | doc: /* Enable VARIABLE to have frame-local bindings. |
| 1633 | When a frame-local binding exists in the current frame, |
| 1634 | it is in effect whenever the current buffer has no buffer-local binding. |
| 1635 | A frame-local binding is actually a frame parameter value; |
| 1636 | thus, any given frame has a local binding for VARIABLE |
| 1637 | if it has a value for the frame parameter named VARIABLE. |
| 1638 | See `modify-frame-parameters' for how to set frame parameters. */) |
| 1639 | (variable) |
| 1640 | register Lisp_Object variable; |
| 1641 | { |
| 1642 | register Lisp_Object tem, valcontents, newval; |
| 1643 | |
| 1644 | CHECK_SYMBOL (variable); |
| 1645 | |
| 1646 | valcontents = SYMBOL_VALUE (variable); |
| 1647 | if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents) |
| 1648 | || BUFFER_OBJFWDP (valcontents)) |
| 1649 | error ("Symbol %s may not be frame-local", SDATA (SYMBOL_NAME (variable))); |
| 1650 | |
| 1651 | if (BUFFER_LOCAL_VALUEP (valcontents) |
| 1652 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1653 | { |
| 1654 | XBUFFER_LOCAL_VALUE (valcontents)->check_frame = 1; |
| 1655 | return variable; |
| 1656 | } |
| 1657 | |
| 1658 | if (EQ (valcontents, Qunbound)) |
| 1659 | SET_SYMBOL_VALUE (variable, Qnil); |
| 1660 | tem = Fcons (Qnil, Fsymbol_value (variable)); |
| 1661 | XSETCAR (tem, tem); |
| 1662 | newval = allocate_misc (); |
| 1663 | XMISCTYPE (newval) = Lisp_Misc_Some_Buffer_Local_Value; |
| 1664 | XBUFFER_LOCAL_VALUE (newval)->realvalue = SYMBOL_VALUE (variable); |
| 1665 | XBUFFER_LOCAL_VALUE (newval)->buffer = Qnil; |
| 1666 | XBUFFER_LOCAL_VALUE (newval)->frame = Qnil; |
| 1667 | XBUFFER_LOCAL_VALUE (newval)->found_for_buffer = 0; |
| 1668 | XBUFFER_LOCAL_VALUE (newval)->found_for_frame = 0; |
| 1669 | XBUFFER_LOCAL_VALUE (newval)->check_frame = 1; |
| 1670 | XBUFFER_LOCAL_VALUE (newval)->cdr = tem; |
| 1671 | SET_SYMBOL_VALUE (variable, newval); |
| 1672 | return variable; |
| 1673 | } |
| 1674 | |
| 1675 | DEFUN ("local-variable-p", Flocal_variable_p, Slocal_variable_p, |
| 1676 | 1, 2, 0, |
| 1677 | doc: /* Non-nil if VARIABLE has a local binding in buffer BUFFER. |
| 1678 | BUFFER defaults to the current buffer. */) |
| 1679 | (variable, buffer) |
| 1680 | register Lisp_Object variable, buffer; |
| 1681 | { |
| 1682 | Lisp_Object valcontents; |
| 1683 | register struct buffer *buf; |
| 1684 | |
| 1685 | if (NILP (buffer)) |
| 1686 | buf = current_buffer; |
| 1687 | else |
| 1688 | { |
| 1689 | CHECK_BUFFER (buffer); |
| 1690 | buf = XBUFFER (buffer); |
| 1691 | } |
| 1692 | |
| 1693 | CHECK_SYMBOL (variable); |
| 1694 | |
| 1695 | valcontents = SYMBOL_VALUE (variable); |
| 1696 | if (BUFFER_LOCAL_VALUEP (valcontents) |
| 1697 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1698 | { |
| 1699 | Lisp_Object tail, elt; |
| 1700 | |
| 1701 | variable = indirect_variable (variable); |
| 1702 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail)) |
| 1703 | { |
| 1704 | elt = XCAR (tail); |
| 1705 | if (EQ (variable, XCAR (elt))) |
| 1706 | return Qt; |
| 1707 | } |
| 1708 | } |
| 1709 | if (BUFFER_OBJFWDP (valcontents)) |
| 1710 | { |
| 1711 | int offset = XBUFFER_OBJFWD (valcontents)->offset; |
| 1712 | int idx = PER_BUFFER_IDX (offset); |
| 1713 | if (idx == -1 || PER_BUFFER_VALUE_P (buf, idx)) |
| 1714 | return Qt; |
| 1715 | } |
| 1716 | return Qnil; |
| 1717 | } |
| 1718 | |
| 1719 | DEFUN ("local-variable-if-set-p", Flocal_variable_if_set_p, Slocal_variable_if_set_p, |
| 1720 | 1, 2, 0, |
| 1721 | doc: /* Non-nil if VARIABLE will be local in buffer BUFFER if it is set there. |
| 1722 | BUFFER defaults to the current buffer. */) |
| 1723 | (variable, buffer) |
| 1724 | register Lisp_Object variable, buffer; |
| 1725 | { |
| 1726 | Lisp_Object valcontents; |
| 1727 | register struct buffer *buf; |
| 1728 | |
| 1729 | if (NILP (buffer)) |
| 1730 | buf = current_buffer; |
| 1731 | else |
| 1732 | { |
| 1733 | CHECK_BUFFER (buffer); |
| 1734 | buf = XBUFFER (buffer); |
| 1735 | } |
| 1736 | |
| 1737 | CHECK_SYMBOL (variable); |
| 1738 | |
| 1739 | valcontents = SYMBOL_VALUE (variable); |
| 1740 | |
| 1741 | /* This means that make-variable-buffer-local was done. */ |
| 1742 | if (BUFFER_LOCAL_VALUEP (valcontents)) |
| 1743 | return Qt; |
| 1744 | /* All these slots become local if they are set. */ |
| 1745 | if (BUFFER_OBJFWDP (valcontents)) |
| 1746 | return Qt; |
| 1747 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
| 1748 | { |
| 1749 | Lisp_Object tail, elt; |
| 1750 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail)) |
| 1751 | { |
| 1752 | elt = XCAR (tail); |
| 1753 | if (EQ (variable, XCAR (elt))) |
| 1754 | return Qt; |
| 1755 | } |
| 1756 | } |
| 1757 | return Qnil; |
| 1758 | } |
| 1759 | \f |
| 1760 | /* Find the function at the end of a chain of symbol function indirections. */ |
| 1761 | |
| 1762 | /* If OBJECT is a symbol, find the end of its function chain and |
| 1763 | return the value found there. If OBJECT is not a symbol, just |
| 1764 | return it. If there is a cycle in the function chain, signal a |
| 1765 | cyclic-function-indirection error. |
| 1766 | |
| 1767 | This is like Findirect_function, except that it doesn't signal an |
| 1768 | error if the chain ends up unbound. */ |
| 1769 | Lisp_Object |
| 1770 | indirect_function (object) |
| 1771 | register Lisp_Object object; |
| 1772 | { |
| 1773 | Lisp_Object tortoise, hare; |
| 1774 | |
| 1775 | hare = tortoise = object; |
| 1776 | |
| 1777 | for (;;) |
| 1778 | { |
| 1779 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
| 1780 | break; |
| 1781 | hare = XSYMBOL (hare)->function; |
| 1782 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
| 1783 | break; |
| 1784 | hare = XSYMBOL (hare)->function; |
| 1785 | |
| 1786 | tortoise = XSYMBOL (tortoise)->function; |
| 1787 | |
| 1788 | if (EQ (hare, tortoise)) |
| 1789 | Fsignal (Qcyclic_function_indirection, Fcons (object, Qnil)); |
| 1790 | } |
| 1791 | |
| 1792 | return hare; |
| 1793 | } |
| 1794 | |
| 1795 | DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0, |
| 1796 | doc: /* Return the function at the end of OBJECT's function chain. |
| 1797 | If OBJECT is a symbol, follow all function indirections and return the final |
| 1798 | function binding. |
| 1799 | If OBJECT is not a symbol, just return it. |
| 1800 | Signal a void-function error if the final symbol is unbound. |
| 1801 | Signal a cyclic-function-indirection error if there is a loop in the |
| 1802 | function chain of symbols. */) |
| 1803 | (object) |
| 1804 | register Lisp_Object object; |
| 1805 | { |
| 1806 | Lisp_Object result; |
| 1807 | |
| 1808 | result = indirect_function (object); |
| 1809 | |
| 1810 | if (EQ (result, Qunbound)) |
| 1811 | return Fsignal (Qvoid_function, Fcons (object, Qnil)); |
| 1812 | return result; |
| 1813 | } |
| 1814 | \f |
| 1815 | /* Extract and set vector and string elements */ |
| 1816 | |
| 1817 | DEFUN ("aref", Faref, Saref, 2, 2, 0, |
| 1818 | doc: /* Return the element of ARRAY at index IDX. |
| 1819 | ARRAY may be a vector, a string, a char-table, a bool-vector, |
| 1820 | or a byte-code object. IDX starts at 0. */) |
| 1821 | (array, idx) |
| 1822 | register Lisp_Object array; |
| 1823 | Lisp_Object idx; |
| 1824 | { |
| 1825 | register int idxval; |
| 1826 | |
| 1827 | CHECK_NUMBER (idx); |
| 1828 | idxval = XINT (idx); |
| 1829 | if (STRINGP (array)) |
| 1830 | { |
| 1831 | int c, idxval_byte; |
| 1832 | |
| 1833 | if (idxval < 0 || idxval >= SCHARS (array)) |
| 1834 | args_out_of_range (array, idx); |
| 1835 | if (! STRING_MULTIBYTE (array)) |
| 1836 | return make_number ((unsigned char) SREF (array, idxval)); |
| 1837 | idxval_byte = string_char_to_byte (array, idxval); |
| 1838 | |
| 1839 | c = STRING_CHAR (SDATA (array) + idxval_byte, |
| 1840 | SBYTES (array) - idxval_byte); |
| 1841 | return make_number (c); |
| 1842 | } |
| 1843 | else if (BOOL_VECTOR_P (array)) |
| 1844 | { |
| 1845 | int val; |
| 1846 | |
| 1847 | if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size) |
| 1848 | args_out_of_range (array, idx); |
| 1849 | |
| 1850 | val = (unsigned char) XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR]; |
| 1851 | return (val & (1 << (idxval % BITS_PER_CHAR)) ? Qt : Qnil); |
| 1852 | } |
| 1853 | else if (CHAR_TABLE_P (array)) |
| 1854 | { |
| 1855 | Lisp_Object val; |
| 1856 | |
| 1857 | val = Qnil; |
| 1858 | |
| 1859 | if (idxval < 0) |
| 1860 | args_out_of_range (array, idx); |
| 1861 | if (idxval < CHAR_TABLE_ORDINARY_SLOTS) |
| 1862 | { |
| 1863 | /* For ASCII and 8-bit European characters, the element is |
| 1864 | stored in the top table. */ |
| 1865 | val = XCHAR_TABLE (array)->contents[idxval]; |
| 1866 | if (NILP (val)) |
| 1867 | val = XCHAR_TABLE (array)->defalt; |
| 1868 | while (NILP (val)) /* Follow parents until we find some value. */ |
| 1869 | { |
| 1870 | array = XCHAR_TABLE (array)->parent; |
| 1871 | if (NILP (array)) |
| 1872 | return Qnil; |
| 1873 | val = XCHAR_TABLE (array)->contents[idxval]; |
| 1874 | if (NILP (val)) |
| 1875 | val = XCHAR_TABLE (array)->defalt; |
| 1876 | } |
| 1877 | return val; |
| 1878 | } |
| 1879 | else |
| 1880 | { |
| 1881 | int code[4], i; |
| 1882 | Lisp_Object sub_table; |
| 1883 | |
| 1884 | SPLIT_CHAR (idxval, code[0], code[1], code[2]); |
| 1885 | if (code[1] < 32) code[1] = -1; |
| 1886 | else if (code[2] < 32) code[2] = -1; |
| 1887 | |
| 1888 | /* Here, the possible range of CODE[0] (== charset ID) is |
| 1889 | 128..MAX_CHARSET. Since the top level char table contains |
| 1890 | data for multibyte characters after 256th element, we must |
| 1891 | increment CODE[0] by 128 to get a correct index. */ |
| 1892 | code[0] += 128; |
| 1893 | code[3] = -1; /* anchor */ |
| 1894 | |
| 1895 | try_parent_char_table: |
| 1896 | sub_table = array; |
| 1897 | for (i = 0; code[i] >= 0; i++) |
| 1898 | { |
| 1899 | val = XCHAR_TABLE (sub_table)->contents[code[i]]; |
| 1900 | if (SUB_CHAR_TABLE_P (val)) |
| 1901 | sub_table = val; |
| 1902 | else |
| 1903 | { |
| 1904 | if (NILP (val)) |
| 1905 | val = XCHAR_TABLE (sub_table)->defalt; |
| 1906 | if (NILP (val)) |
| 1907 | { |
| 1908 | array = XCHAR_TABLE (array)->parent; |
| 1909 | if (!NILP (array)) |
| 1910 | goto try_parent_char_table; |
| 1911 | } |
| 1912 | return val; |
| 1913 | } |
| 1914 | } |
| 1915 | /* Here, VAL is a sub char table. We try the default value |
| 1916 | and parent. */ |
| 1917 | val = XCHAR_TABLE (val)->defalt; |
| 1918 | if (NILP (val)) |
| 1919 | { |
| 1920 | array = XCHAR_TABLE (array)->parent; |
| 1921 | if (!NILP (array)) |
| 1922 | goto try_parent_char_table; |
| 1923 | } |
| 1924 | return val; |
| 1925 | } |
| 1926 | } |
| 1927 | else |
| 1928 | { |
| 1929 | int size = 0; |
| 1930 | if (VECTORP (array)) |
| 1931 | size = XVECTOR (array)->size; |
| 1932 | else if (COMPILEDP (array)) |
| 1933 | size = XVECTOR (array)->size & PSEUDOVECTOR_SIZE_MASK; |
| 1934 | else |
| 1935 | wrong_type_argument (Qarrayp, array); |
| 1936 | |
| 1937 | if (idxval < 0 || idxval >= size) |
| 1938 | args_out_of_range (array, idx); |
| 1939 | return XVECTOR (array)->contents[idxval]; |
| 1940 | } |
| 1941 | } |
| 1942 | |
| 1943 | /* Don't use alloca for relocating string data larger than this, lest |
| 1944 | we overflow their stack. The value is the same as what used in |
| 1945 | fns.c for base64 handling. */ |
| 1946 | #define MAX_ALLOCA 16*1024 |
| 1947 | |
| 1948 | DEFUN ("aset", Faset, Saset, 3, 3, 0, |
| 1949 | doc: /* Store into the element of ARRAY at index IDX the value NEWELT. |
| 1950 | ARRAY may be a vector, a string, a char-table or a bool-vector. |
| 1951 | IDX starts at 0. */) |
| 1952 | (array, idx, newelt) |
| 1953 | register Lisp_Object array; |
| 1954 | Lisp_Object idx, newelt; |
| 1955 | { |
| 1956 | register int idxval; |
| 1957 | |
| 1958 | CHECK_NUMBER (idx); |
| 1959 | idxval = XINT (idx); |
| 1960 | if (!VECTORP (array) && !STRINGP (array) && !BOOL_VECTOR_P (array) |
| 1961 | && ! CHAR_TABLE_P (array)) |
| 1962 | array = wrong_type_argument (Qarrayp, array); |
| 1963 | CHECK_IMPURE (array); |
| 1964 | |
| 1965 | if (VECTORP (array)) |
| 1966 | { |
| 1967 | if (idxval < 0 || idxval >= XVECTOR (array)->size) |
| 1968 | args_out_of_range (array, idx); |
| 1969 | XVECTOR (array)->contents[idxval] = newelt; |
| 1970 | } |
| 1971 | else if (BOOL_VECTOR_P (array)) |
| 1972 | { |
| 1973 | int val; |
| 1974 | |
| 1975 | if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size) |
| 1976 | args_out_of_range (array, idx); |
| 1977 | |
| 1978 | val = (unsigned char) XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR]; |
| 1979 | |
| 1980 | if (! NILP (newelt)) |
| 1981 | val |= 1 << (idxval % BITS_PER_CHAR); |
| 1982 | else |
| 1983 | val &= ~(1 << (idxval % BITS_PER_CHAR)); |
| 1984 | XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR] = val; |
| 1985 | } |
| 1986 | else if (CHAR_TABLE_P (array)) |
| 1987 | { |
| 1988 | if (idxval < 0) |
| 1989 | args_out_of_range (array, idx); |
| 1990 | if (idxval < CHAR_TABLE_ORDINARY_SLOTS) |
| 1991 | XCHAR_TABLE (array)->contents[idxval] = newelt; |
| 1992 | else |
| 1993 | { |
| 1994 | int code[4], i; |
| 1995 | Lisp_Object val; |
| 1996 | |
| 1997 | SPLIT_CHAR (idxval, code[0], code[1], code[2]); |
| 1998 | if (code[1] < 32) code[1] = -1; |
| 1999 | else if (code[2] < 32) code[2] = -1; |
| 2000 | |
| 2001 | /* See the comment of the corresponding part in Faref. */ |
| 2002 | code[0] += 128; |
| 2003 | code[3] = -1; /* anchor */ |
| 2004 | for (i = 0; code[i + 1] >= 0; i++) |
| 2005 | { |
| 2006 | val = XCHAR_TABLE (array)->contents[code[i]]; |
| 2007 | if (SUB_CHAR_TABLE_P (val)) |
| 2008 | array = val; |
| 2009 | else |
| 2010 | { |
| 2011 | Lisp_Object temp; |
| 2012 | |
| 2013 | /* VAL is a leaf. Create a sub char table with the |
| 2014 | default value VAL or XCHAR_TABLE (array)->defalt |
| 2015 | and look into it. */ |
| 2016 | |
| 2017 | temp = make_sub_char_table (NILP (val) |
| 2018 | ? XCHAR_TABLE (array)->defalt |
| 2019 | : val); |
| 2020 | XCHAR_TABLE (array)->contents[code[i]] = temp; |
| 2021 | array = temp; |
| 2022 | } |
| 2023 | } |
| 2024 | XCHAR_TABLE (array)->contents[code[i]] = newelt; |
| 2025 | } |
| 2026 | } |
| 2027 | else if (STRING_MULTIBYTE (array)) |
| 2028 | { |
| 2029 | int idxval_byte, prev_bytes, new_bytes; |
| 2030 | unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1; |
| 2031 | |
| 2032 | if (idxval < 0 || idxval >= SCHARS (array)) |
| 2033 | args_out_of_range (array, idx); |
| 2034 | CHECK_NUMBER (newelt); |
| 2035 | |
| 2036 | idxval_byte = string_char_to_byte (array, idxval); |
| 2037 | p1 = SDATA (array) + idxval_byte; |
| 2038 | PARSE_MULTIBYTE_SEQ (p1, nbytes - idxval_byte, prev_bytes); |
| 2039 | new_bytes = CHAR_STRING (XINT (newelt), p0); |
| 2040 | if (prev_bytes != new_bytes) |
| 2041 | { |
| 2042 | /* We must relocate the string data. */ |
| 2043 | int nchars = SCHARS (array); |
| 2044 | int nbytes = SBYTES (array); |
| 2045 | unsigned char *str; |
| 2046 | |
| 2047 | str = (nbytes <= MAX_ALLOCA |
| 2048 | ? (unsigned char *) alloca (nbytes) |
| 2049 | : (unsigned char *) xmalloc (nbytes)); |
| 2050 | bcopy (SDATA (array), str, nbytes); |
| 2051 | allocate_string_data (XSTRING (array), nchars, |
| 2052 | nbytes + new_bytes - prev_bytes); |
| 2053 | bcopy (str, SDATA (array), idxval_byte); |
| 2054 | p1 = SDATA (array) + idxval_byte; |
| 2055 | bcopy (str + idxval_byte + prev_bytes, p1 + new_bytes, |
| 2056 | nbytes - (idxval_byte + prev_bytes)); |
| 2057 | if (nbytes > MAX_ALLOCA) |
| 2058 | xfree (str); |
| 2059 | clear_string_char_byte_cache (); |
| 2060 | } |
| 2061 | while (new_bytes--) |
| 2062 | *p1++ = *p0++; |
| 2063 | } |
| 2064 | else |
| 2065 | { |
| 2066 | if (idxval < 0 || idxval >= SCHARS (array)) |
| 2067 | args_out_of_range (array, idx); |
| 2068 | CHECK_NUMBER (newelt); |
| 2069 | |
| 2070 | if (XINT (newelt) < 0 || SINGLE_BYTE_CHAR_P (XINT (newelt))) |
| 2071 | SSET (array, idxval, XINT (newelt)); |
| 2072 | else |
| 2073 | { |
| 2074 | /* We must relocate the string data while converting it to |
| 2075 | multibyte. */ |
| 2076 | int idxval_byte, prev_bytes, new_bytes; |
| 2077 | unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1; |
| 2078 | unsigned char *origstr = SDATA (array), *str; |
| 2079 | int nchars, nbytes; |
| 2080 | |
| 2081 | nchars = SCHARS (array); |
| 2082 | nbytes = idxval_byte = count_size_as_multibyte (origstr, idxval); |
| 2083 | nbytes += count_size_as_multibyte (origstr + idxval, |
| 2084 | nchars - idxval); |
| 2085 | str = (nbytes <= MAX_ALLOCA |
| 2086 | ? (unsigned char *) alloca (nbytes) |
| 2087 | : (unsigned char *) xmalloc (nbytes)); |
| 2088 | copy_text (SDATA (array), str, nchars, 0, 1); |
| 2089 | PARSE_MULTIBYTE_SEQ (str + idxval_byte, nbytes - idxval_byte, |
| 2090 | prev_bytes); |
| 2091 | new_bytes = CHAR_STRING (XINT (newelt), p0); |
| 2092 | allocate_string_data (XSTRING (array), nchars, |
| 2093 | nbytes + new_bytes - prev_bytes); |
| 2094 | bcopy (str, SDATA (array), idxval_byte); |
| 2095 | p1 = SDATA (array) + idxval_byte; |
| 2096 | while (new_bytes--) |
| 2097 | *p1++ = *p0++; |
| 2098 | bcopy (str + idxval_byte + prev_bytes, p1, |
| 2099 | nbytes - (idxval_byte + prev_bytes)); |
| 2100 | if (nbytes > MAX_ALLOCA) |
| 2101 | xfree (str); |
| 2102 | clear_string_char_byte_cache (); |
| 2103 | } |
| 2104 | } |
| 2105 | |
| 2106 | return newelt; |
| 2107 | } |
| 2108 | \f |
| 2109 | /* Arithmetic functions */ |
| 2110 | |
| 2111 | enum comparison { equal, notequal, less, grtr, less_or_equal, grtr_or_equal }; |
| 2112 | |
| 2113 | Lisp_Object |
| 2114 | arithcompare (num1, num2, comparison) |
| 2115 | Lisp_Object num1, num2; |
| 2116 | enum comparison comparison; |
| 2117 | { |
| 2118 | double f1 = 0, f2 = 0; |
| 2119 | int floatp = 0; |
| 2120 | |
| 2121 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1); |
| 2122 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2); |
| 2123 | |
| 2124 | if (FLOATP (num1) || FLOATP (num2)) |
| 2125 | { |
| 2126 | floatp = 1; |
| 2127 | f1 = (FLOATP (num1)) ? XFLOAT_DATA (num1) : XINT (num1); |
| 2128 | f2 = (FLOATP (num2)) ? XFLOAT_DATA (num2) : XINT (num2); |
| 2129 | } |
| 2130 | |
| 2131 | switch (comparison) |
| 2132 | { |
| 2133 | case equal: |
| 2134 | if (floatp ? f1 == f2 : XINT (num1) == XINT (num2)) |
| 2135 | return Qt; |
| 2136 | return Qnil; |
| 2137 | |
| 2138 | case notequal: |
| 2139 | if (floatp ? f1 != f2 : XINT (num1) != XINT (num2)) |
| 2140 | return Qt; |
| 2141 | return Qnil; |
| 2142 | |
| 2143 | case less: |
| 2144 | if (floatp ? f1 < f2 : XINT (num1) < XINT (num2)) |
| 2145 | return Qt; |
| 2146 | return Qnil; |
| 2147 | |
| 2148 | case less_or_equal: |
| 2149 | if (floatp ? f1 <= f2 : XINT (num1) <= XINT (num2)) |
| 2150 | return Qt; |
| 2151 | return Qnil; |
| 2152 | |
| 2153 | case grtr: |
| 2154 | if (floatp ? f1 > f2 : XINT (num1) > XINT (num2)) |
| 2155 | return Qt; |
| 2156 | return Qnil; |
| 2157 | |
| 2158 | case grtr_or_equal: |
| 2159 | if (floatp ? f1 >= f2 : XINT (num1) >= XINT (num2)) |
| 2160 | return Qt; |
| 2161 | return Qnil; |
| 2162 | |
| 2163 | default: |
| 2164 | abort (); |
| 2165 | } |
| 2166 | } |
| 2167 | |
| 2168 | DEFUN ("=", Feqlsign, Seqlsign, 2, 2, 0, |
| 2169 | doc: /* Return t if two args, both numbers or markers, are equal. */) |
| 2170 | (num1, num2) |
| 2171 | register Lisp_Object num1, num2; |
| 2172 | { |
| 2173 | return arithcompare (num1, num2, equal); |
| 2174 | } |
| 2175 | |
| 2176 | DEFUN ("<", Flss, Slss, 2, 2, 0, |
| 2177 | doc: /* Return t if first arg is less than second arg. Both must be numbers or markers. */) |
| 2178 | (num1, num2) |
| 2179 | register Lisp_Object num1, num2; |
| 2180 | { |
| 2181 | return arithcompare (num1, num2, less); |
| 2182 | } |
| 2183 | |
| 2184 | DEFUN (">", Fgtr, Sgtr, 2, 2, 0, |
| 2185 | doc: /* Return t if first arg is greater than second arg. Both must be numbers or markers. */) |
| 2186 | (num1, num2) |
| 2187 | register Lisp_Object num1, num2; |
| 2188 | { |
| 2189 | return arithcompare (num1, num2, grtr); |
| 2190 | } |
| 2191 | |
| 2192 | DEFUN ("<=", Fleq, Sleq, 2, 2, 0, |
| 2193 | doc: /* Return t if first arg is less than or equal to second arg. |
| 2194 | Both must be numbers or markers. */) |
| 2195 | (num1, num2) |
| 2196 | register Lisp_Object num1, num2; |
| 2197 | { |
| 2198 | return arithcompare (num1, num2, less_or_equal); |
| 2199 | } |
| 2200 | |
| 2201 | DEFUN (">=", Fgeq, Sgeq, 2, 2, 0, |
| 2202 | doc: /* Return t if first arg is greater than or equal to second arg. |
| 2203 | Both must be numbers or markers. */) |
| 2204 | (num1, num2) |
| 2205 | register Lisp_Object num1, num2; |
| 2206 | { |
| 2207 | return arithcompare (num1, num2, grtr_or_equal); |
| 2208 | } |
| 2209 | |
| 2210 | DEFUN ("/=", Fneq, Sneq, 2, 2, 0, |
| 2211 | doc: /* Return t if first arg is not equal to second arg. Both must be numbers or markers. */) |
| 2212 | (num1, num2) |
| 2213 | register Lisp_Object num1, num2; |
| 2214 | { |
| 2215 | return arithcompare (num1, num2, notequal); |
| 2216 | } |
| 2217 | |
| 2218 | DEFUN ("zerop", Fzerop, Szerop, 1, 1, 0, |
| 2219 | doc: /* Return t if NUMBER is zero. */) |
| 2220 | (number) |
| 2221 | register Lisp_Object number; |
| 2222 | { |
| 2223 | CHECK_NUMBER_OR_FLOAT (number); |
| 2224 | |
| 2225 | if (FLOATP (number)) |
| 2226 | { |
| 2227 | if (XFLOAT_DATA (number) == 0.0) |
| 2228 | return Qt; |
| 2229 | return Qnil; |
| 2230 | } |
| 2231 | |
| 2232 | if (!XINT (number)) |
| 2233 | return Qt; |
| 2234 | return Qnil; |
| 2235 | } |
| 2236 | \f |
| 2237 | /* Convert between long values and pairs of Lisp integers. */ |
| 2238 | |
| 2239 | Lisp_Object |
| 2240 | long_to_cons (i) |
| 2241 | unsigned long i; |
| 2242 | { |
| 2243 | unsigned int top = i >> 16; |
| 2244 | unsigned int bot = i & 0xFFFF; |
| 2245 | if (top == 0) |
| 2246 | return make_number (bot); |
| 2247 | if (top == (unsigned long)-1 >> 16) |
| 2248 | return Fcons (make_number (-1), make_number (bot)); |
| 2249 | return Fcons (make_number (top), make_number (bot)); |
| 2250 | } |
| 2251 | |
| 2252 | unsigned long |
| 2253 | cons_to_long (c) |
| 2254 | Lisp_Object c; |
| 2255 | { |
| 2256 | Lisp_Object top, bot; |
| 2257 | if (INTEGERP (c)) |
| 2258 | return XINT (c); |
| 2259 | top = XCAR (c); |
| 2260 | bot = XCDR (c); |
| 2261 | if (CONSP (bot)) |
| 2262 | bot = XCAR (bot); |
| 2263 | return ((XINT (top) << 16) | XINT (bot)); |
| 2264 | } |
| 2265 | \f |
| 2266 | DEFUN ("number-to-string", Fnumber_to_string, Snumber_to_string, 1, 1, 0, |
| 2267 | doc: /* Convert NUMBER to a string by printing it in decimal. |
| 2268 | Uses a minus sign if negative. |
| 2269 | NUMBER may be an integer or a floating point number. */) |
| 2270 | (number) |
| 2271 | Lisp_Object number; |
| 2272 | { |
| 2273 | char buffer[VALBITS]; |
| 2274 | |
| 2275 | CHECK_NUMBER_OR_FLOAT (number); |
| 2276 | |
| 2277 | if (FLOATP (number)) |
| 2278 | { |
| 2279 | char pigbuf[350]; /* see comments in float_to_string */ |
| 2280 | |
| 2281 | float_to_string (pigbuf, XFLOAT_DATA (number)); |
| 2282 | return build_string (pigbuf); |
| 2283 | } |
| 2284 | |
| 2285 | if (sizeof (int) == sizeof (EMACS_INT)) |
| 2286 | sprintf (buffer, "%d", XINT (number)); |
| 2287 | else if (sizeof (long) == sizeof (EMACS_INT)) |
| 2288 | sprintf (buffer, "%ld", (long) XINT (number)); |
| 2289 | else |
| 2290 | abort (); |
| 2291 | return build_string (buffer); |
| 2292 | } |
| 2293 | |
| 2294 | INLINE static int |
| 2295 | digit_to_number (character, base) |
| 2296 | int character, base; |
| 2297 | { |
| 2298 | int digit; |
| 2299 | |
| 2300 | if (character >= '0' && character <= '9') |
| 2301 | digit = character - '0'; |
| 2302 | else if (character >= 'a' && character <= 'z') |
| 2303 | digit = character - 'a' + 10; |
| 2304 | else if (character >= 'A' && character <= 'Z') |
| 2305 | digit = character - 'A' + 10; |
| 2306 | else |
| 2307 | return -1; |
| 2308 | |
| 2309 | if (digit >= base) |
| 2310 | return -1; |
| 2311 | else |
| 2312 | return digit; |
| 2313 | } |
| 2314 | |
| 2315 | DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 2, 0, |
| 2316 | doc: /* Convert STRING to a number by parsing it as a decimal number. |
| 2317 | This parses both integers and floating point numbers. |
| 2318 | It ignores leading spaces and tabs. |
| 2319 | |
| 2320 | If BASE, interpret STRING as a number in that base. If BASE isn't |
| 2321 | present, base 10 is used. BASE must be between 2 and 16 (inclusive). |
| 2322 | If the base used is not 10, floating point is not recognized. */) |
| 2323 | (string, base) |
| 2324 | register Lisp_Object string, base; |
| 2325 | { |
| 2326 | register unsigned char *p; |
| 2327 | register int b; |
| 2328 | int sign = 1; |
| 2329 | Lisp_Object val; |
| 2330 | |
| 2331 | CHECK_STRING (string); |
| 2332 | |
| 2333 | if (NILP (base)) |
| 2334 | b = 10; |
| 2335 | else |
| 2336 | { |
| 2337 | CHECK_NUMBER (base); |
| 2338 | b = XINT (base); |
| 2339 | if (b < 2 || b > 16) |
| 2340 | Fsignal (Qargs_out_of_range, Fcons (base, Qnil)); |
| 2341 | } |
| 2342 | |
| 2343 | /* Skip any whitespace at the front of the number. Some versions of |
| 2344 | atoi do this anyway, so we might as well make Emacs lisp consistent. */ |
| 2345 | p = SDATA (string); |
| 2346 | while (*p == ' ' || *p == '\t') |
| 2347 | p++; |
| 2348 | |
| 2349 | if (*p == '-') |
| 2350 | { |
| 2351 | sign = -1; |
| 2352 | p++; |
| 2353 | } |
| 2354 | else if (*p == '+') |
| 2355 | p++; |
| 2356 | |
| 2357 | if (isfloat_string (p) && b == 10) |
| 2358 | val = make_float (sign * atof (p)); |
| 2359 | else |
| 2360 | { |
| 2361 | double v = 0; |
| 2362 | |
| 2363 | while (1) |
| 2364 | { |
| 2365 | int digit = digit_to_number (*p++, b); |
| 2366 | if (digit < 0) |
| 2367 | break; |
| 2368 | v = v * b + digit; |
| 2369 | } |
| 2370 | |
| 2371 | val = make_fixnum_or_float (sign * v); |
| 2372 | } |
| 2373 | |
| 2374 | return val; |
| 2375 | } |
| 2376 | |
| 2377 | \f |
| 2378 | enum arithop |
| 2379 | { |
| 2380 | Aadd, |
| 2381 | Asub, |
| 2382 | Amult, |
| 2383 | Adiv, |
| 2384 | Alogand, |
| 2385 | Alogior, |
| 2386 | Alogxor, |
| 2387 | Amax, |
| 2388 | Amin |
| 2389 | }; |
| 2390 | |
| 2391 | static Lisp_Object float_arith_driver P_ ((double, int, enum arithop, |
| 2392 | int, Lisp_Object *)); |
| 2393 | extern Lisp_Object fmod_float (); |
| 2394 | |
| 2395 | Lisp_Object |
| 2396 | arith_driver (code, nargs, args) |
| 2397 | enum arithop code; |
| 2398 | int nargs; |
| 2399 | register Lisp_Object *args; |
| 2400 | { |
| 2401 | register Lisp_Object val; |
| 2402 | register int argnum; |
| 2403 | register EMACS_INT accum = 0; |
| 2404 | register EMACS_INT next; |
| 2405 | |
| 2406 | switch (SWITCH_ENUM_CAST (code)) |
| 2407 | { |
| 2408 | case Alogior: |
| 2409 | case Alogxor: |
| 2410 | case Aadd: |
| 2411 | case Asub: |
| 2412 | accum = 0; |
| 2413 | break; |
| 2414 | case Amult: |
| 2415 | accum = 1; |
| 2416 | break; |
| 2417 | case Alogand: |
| 2418 | accum = -1; |
| 2419 | break; |
| 2420 | default: |
| 2421 | break; |
| 2422 | } |
| 2423 | |
| 2424 | for (argnum = 0; argnum < nargs; argnum++) |
| 2425 | { |
| 2426 | /* Using args[argnum] as argument to CHECK_NUMBER_... */ |
| 2427 | val = args[argnum]; |
| 2428 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val); |
| 2429 | |
| 2430 | if (FLOATP (val)) |
| 2431 | return float_arith_driver ((double) accum, argnum, code, |
| 2432 | nargs, args); |
| 2433 | args[argnum] = val; |
| 2434 | next = XINT (args[argnum]); |
| 2435 | switch (SWITCH_ENUM_CAST (code)) |
| 2436 | { |
| 2437 | case Aadd: |
| 2438 | accum += next; |
| 2439 | break; |
| 2440 | case Asub: |
| 2441 | accum = argnum ? accum - next : nargs == 1 ? - next : next; |
| 2442 | break; |
| 2443 | case Amult: |
| 2444 | accum *= next; |
| 2445 | break; |
| 2446 | case Adiv: |
| 2447 | if (!argnum) |
| 2448 | accum = next; |
| 2449 | else |
| 2450 | { |
| 2451 | if (next == 0) |
| 2452 | Fsignal (Qarith_error, Qnil); |
| 2453 | accum /= next; |
| 2454 | } |
| 2455 | break; |
| 2456 | case Alogand: |
| 2457 | accum &= next; |
| 2458 | break; |
| 2459 | case Alogior: |
| 2460 | accum |= next; |
| 2461 | break; |
| 2462 | case Alogxor: |
| 2463 | accum ^= next; |
| 2464 | break; |
| 2465 | case Amax: |
| 2466 | if (!argnum || next > accum) |
| 2467 | accum = next; |
| 2468 | break; |
| 2469 | case Amin: |
| 2470 | if (!argnum || next < accum) |
| 2471 | accum = next; |
| 2472 | break; |
| 2473 | } |
| 2474 | } |
| 2475 | |
| 2476 | XSETINT (val, accum); |
| 2477 | return val; |
| 2478 | } |
| 2479 | |
| 2480 | #undef isnan |
| 2481 | #define isnan(x) ((x) != (x)) |
| 2482 | |
| 2483 | static Lisp_Object |
| 2484 | float_arith_driver (accum, argnum, code, nargs, args) |
| 2485 | double accum; |
| 2486 | register int argnum; |
| 2487 | enum arithop code; |
| 2488 | int nargs; |
| 2489 | register Lisp_Object *args; |
| 2490 | { |
| 2491 | register Lisp_Object val; |
| 2492 | double next; |
| 2493 | |
| 2494 | for (; argnum < nargs; argnum++) |
| 2495 | { |
| 2496 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ |
| 2497 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val); |
| 2498 | |
| 2499 | if (FLOATP (val)) |
| 2500 | { |
| 2501 | next = XFLOAT_DATA (val); |
| 2502 | } |
| 2503 | else |
| 2504 | { |
| 2505 | args[argnum] = val; /* runs into a compiler bug. */ |
| 2506 | next = XINT (args[argnum]); |
| 2507 | } |
| 2508 | switch (SWITCH_ENUM_CAST (code)) |
| 2509 | { |
| 2510 | case Aadd: |
| 2511 | accum += next; |
| 2512 | break; |
| 2513 | case Asub: |
| 2514 | accum = argnum ? accum - next : nargs == 1 ? - next : next; |
| 2515 | break; |
| 2516 | case Amult: |
| 2517 | accum *= next; |
| 2518 | break; |
| 2519 | case Adiv: |
| 2520 | if (!argnum) |
| 2521 | accum = next; |
| 2522 | else |
| 2523 | { |
| 2524 | if (! IEEE_FLOATING_POINT && next == 0) |
| 2525 | Fsignal (Qarith_error, Qnil); |
| 2526 | accum /= next; |
| 2527 | } |
| 2528 | break; |
| 2529 | case Alogand: |
| 2530 | case Alogior: |
| 2531 | case Alogxor: |
| 2532 | return wrong_type_argument (Qinteger_or_marker_p, val); |
| 2533 | case Amax: |
| 2534 | if (!argnum || isnan (next) || next > accum) |
| 2535 | accum = next; |
| 2536 | break; |
| 2537 | case Amin: |
| 2538 | if (!argnum || isnan (next) || next < accum) |
| 2539 | accum = next; |
| 2540 | break; |
| 2541 | } |
| 2542 | } |
| 2543 | |
| 2544 | return make_float (accum); |
| 2545 | } |
| 2546 | |
| 2547 | |
| 2548 | DEFUN ("+", Fplus, Splus, 0, MANY, 0, |
| 2549 | doc: /* Return sum of any number of arguments, which are numbers or markers. |
| 2550 | usage: (+ &rest NUMBERS-OR-MARKERS) */) |
| 2551 | (nargs, args) |
| 2552 | int nargs; |
| 2553 | Lisp_Object *args; |
| 2554 | { |
| 2555 | return arith_driver (Aadd, nargs, args); |
| 2556 | } |
| 2557 | |
| 2558 | DEFUN ("-", Fminus, Sminus, 0, MANY, 0, |
| 2559 | doc: /* Negate number or subtract numbers or markers. |
| 2560 | With one arg, negates it. With more than one arg, |
| 2561 | subtracts all but the first from the first. |
| 2562 | usage: (- &optional NUMBER-OR-MARKER &rest MORE-NUMBERS-OR-MARKERS) */) |
| 2563 | (nargs, args) |
| 2564 | int nargs; |
| 2565 | Lisp_Object *args; |
| 2566 | { |
| 2567 | return arith_driver (Asub, nargs, args); |
| 2568 | } |
| 2569 | |
| 2570 | DEFUN ("*", Ftimes, Stimes, 0, MANY, 0, |
| 2571 | doc: /* Return product of any number of arguments, which are numbers or markers. |
| 2572 | usage: (* &rest NUMBERS-OR-MARKERS) */) |
| 2573 | (nargs, args) |
| 2574 | int nargs; |
| 2575 | Lisp_Object *args; |
| 2576 | { |
| 2577 | return arith_driver (Amult, nargs, args); |
| 2578 | } |
| 2579 | |
| 2580 | DEFUN ("/", Fquo, Squo, 2, MANY, 0, |
| 2581 | doc: /* Return first argument divided by all the remaining arguments. |
| 2582 | The arguments must be numbers or markers. |
| 2583 | usage: (/ DIVIDEND DIVISOR &rest DIVISORS) */) |
| 2584 | (nargs, args) |
| 2585 | int nargs; |
| 2586 | Lisp_Object *args; |
| 2587 | { |
| 2588 | return arith_driver (Adiv, nargs, args); |
| 2589 | } |
| 2590 | |
| 2591 | DEFUN ("%", Frem, Srem, 2, 2, 0, |
| 2592 | doc: /* Return remainder of X divided by Y. |
| 2593 | Both must be integers or markers. */) |
| 2594 | (x, y) |
| 2595 | register Lisp_Object x, y; |
| 2596 | { |
| 2597 | Lisp_Object val; |
| 2598 | |
| 2599 | CHECK_NUMBER_COERCE_MARKER (x); |
| 2600 | CHECK_NUMBER_COERCE_MARKER (y); |
| 2601 | |
| 2602 | if (XFASTINT (y) == 0) |
| 2603 | Fsignal (Qarith_error, Qnil); |
| 2604 | |
| 2605 | XSETINT (val, XINT (x) % XINT (y)); |
| 2606 | return val; |
| 2607 | } |
| 2608 | |
| 2609 | #ifndef HAVE_FMOD |
| 2610 | double |
| 2611 | fmod (f1, f2) |
| 2612 | double f1, f2; |
| 2613 | { |
| 2614 | double r = f1; |
| 2615 | |
| 2616 | if (f2 < 0.0) |
| 2617 | f2 = -f2; |
| 2618 | |
| 2619 | /* If the magnitude of the result exceeds that of the divisor, or |
| 2620 | the sign of the result does not agree with that of the dividend, |
| 2621 | iterate with the reduced value. This does not yield a |
| 2622 | particularly accurate result, but at least it will be in the |
| 2623 | range promised by fmod. */ |
| 2624 | do |
| 2625 | r -= f2 * floor (r / f2); |
| 2626 | while (f2 <= (r < 0 ? -r : r) || ((r < 0) != (f1 < 0) && ! isnan (r))); |
| 2627 | |
| 2628 | return r; |
| 2629 | } |
| 2630 | #endif /* ! HAVE_FMOD */ |
| 2631 | |
| 2632 | DEFUN ("mod", Fmod, Smod, 2, 2, 0, |
| 2633 | doc: /* Return X modulo Y. |
| 2634 | The result falls between zero (inclusive) and Y (exclusive). |
| 2635 | Both X and Y must be numbers or markers. */) |
| 2636 | (x, y) |
| 2637 | register Lisp_Object x, y; |
| 2638 | { |
| 2639 | Lisp_Object val; |
| 2640 | EMACS_INT i1, i2; |
| 2641 | |
| 2642 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (x); |
| 2643 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (y); |
| 2644 | |
| 2645 | if (FLOATP (x) || FLOATP (y)) |
| 2646 | return fmod_float (x, y); |
| 2647 | |
| 2648 | i1 = XINT (x); |
| 2649 | i2 = XINT (y); |
| 2650 | |
| 2651 | if (i2 == 0) |
| 2652 | Fsignal (Qarith_error, Qnil); |
| 2653 | |
| 2654 | i1 %= i2; |
| 2655 | |
| 2656 | /* If the "remainder" comes out with the wrong sign, fix it. */ |
| 2657 | if (i2 < 0 ? i1 > 0 : i1 < 0) |
| 2658 | i1 += i2; |
| 2659 | |
| 2660 | XSETINT (val, i1); |
| 2661 | return val; |
| 2662 | } |
| 2663 | |
| 2664 | DEFUN ("max", Fmax, Smax, 1, MANY, 0, |
| 2665 | doc: /* Return largest of all the arguments (which must be numbers or markers). |
| 2666 | The value is always a number; markers are converted to numbers. |
| 2667 | usage: (max NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
| 2668 | (nargs, args) |
| 2669 | int nargs; |
| 2670 | Lisp_Object *args; |
| 2671 | { |
| 2672 | return arith_driver (Amax, nargs, args); |
| 2673 | } |
| 2674 | |
| 2675 | DEFUN ("min", Fmin, Smin, 1, MANY, 0, |
| 2676 | doc: /* Return smallest of all the arguments (which must be numbers or markers). |
| 2677 | The value is always a number; markers are converted to numbers. |
| 2678 | usage: (min NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */) |
| 2679 | (nargs, args) |
| 2680 | int nargs; |
| 2681 | Lisp_Object *args; |
| 2682 | { |
| 2683 | return arith_driver (Amin, nargs, args); |
| 2684 | } |
| 2685 | |
| 2686 | DEFUN ("logand", Flogand, Slogand, 0, MANY, 0, |
| 2687 | doc: /* Return bitwise-and of all the arguments. |
| 2688 | Arguments may be integers, or markers converted to integers. |
| 2689 | usage: (logand &rest INTS-OR-MARKERS) */) |
| 2690 | (nargs, args) |
| 2691 | int nargs; |
| 2692 | Lisp_Object *args; |
| 2693 | { |
| 2694 | return arith_driver (Alogand, nargs, args); |
| 2695 | } |
| 2696 | |
| 2697 | DEFUN ("logior", Flogior, Slogior, 0, MANY, 0, |
| 2698 | doc: /* Return bitwise-or of all the arguments. |
| 2699 | Arguments may be integers, or markers converted to integers. |
| 2700 | usage: (logior &rest INTS-OR-MARKERS) */) |
| 2701 | (nargs, args) |
| 2702 | int nargs; |
| 2703 | Lisp_Object *args; |
| 2704 | { |
| 2705 | return arith_driver (Alogior, nargs, args); |
| 2706 | } |
| 2707 | |
| 2708 | DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0, |
| 2709 | doc: /* Return bitwise-exclusive-or of all the arguments. |
| 2710 | Arguments may be integers, or markers converted to integers. |
| 2711 | usage: (logxor &rest INTS-OR-MARKERS) */) |
| 2712 | (nargs, args) |
| 2713 | int nargs; |
| 2714 | Lisp_Object *args; |
| 2715 | { |
| 2716 | return arith_driver (Alogxor, nargs, args); |
| 2717 | } |
| 2718 | |
| 2719 | DEFUN ("ash", Fash, Sash, 2, 2, 0, |
| 2720 | doc: /* Return VALUE with its bits shifted left by COUNT. |
| 2721 | If COUNT is negative, shifting is actually to the right. |
| 2722 | In this case, the sign bit is duplicated. */) |
| 2723 | (value, count) |
| 2724 | register Lisp_Object value, count; |
| 2725 | { |
| 2726 | register Lisp_Object val; |
| 2727 | |
| 2728 | CHECK_NUMBER (value); |
| 2729 | CHECK_NUMBER (count); |
| 2730 | |
| 2731 | if (XINT (count) >= BITS_PER_EMACS_INT) |
| 2732 | XSETINT (val, 0); |
| 2733 | else if (XINT (count) > 0) |
| 2734 | XSETINT (val, XINT (value) << XFASTINT (count)); |
| 2735 | else if (XINT (count) <= -BITS_PER_EMACS_INT) |
| 2736 | XSETINT (val, XINT (value) < 0 ? -1 : 0); |
| 2737 | else |
| 2738 | XSETINT (val, XINT (value) >> -XINT (count)); |
| 2739 | return val; |
| 2740 | } |
| 2741 | |
| 2742 | DEFUN ("lsh", Flsh, Slsh, 2, 2, 0, |
| 2743 | doc: /* Return VALUE with its bits shifted left by COUNT. |
| 2744 | If COUNT is negative, shifting is actually to the right. |
| 2745 | In this case, zeros are shifted in on the left. */) |
| 2746 | (value, count) |
| 2747 | register Lisp_Object value, count; |
| 2748 | { |
| 2749 | register Lisp_Object val; |
| 2750 | |
| 2751 | CHECK_NUMBER (value); |
| 2752 | CHECK_NUMBER (count); |
| 2753 | |
| 2754 | if (XINT (count) >= BITS_PER_EMACS_INT) |
| 2755 | XSETINT (val, 0); |
| 2756 | else if (XINT (count) > 0) |
| 2757 | XSETINT (val, (EMACS_UINT) XUINT (value) << XFASTINT (count)); |
| 2758 | else if (XINT (count) <= -BITS_PER_EMACS_INT) |
| 2759 | XSETINT (val, 0); |
| 2760 | else |
| 2761 | XSETINT (val, (EMACS_UINT) XUINT (value) >> -XINT (count)); |
| 2762 | return val; |
| 2763 | } |
| 2764 | |
| 2765 | DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0, |
| 2766 | doc: /* Return NUMBER plus one. NUMBER may be a number or a marker. |
| 2767 | Markers are converted to integers. */) |
| 2768 | (number) |
| 2769 | register Lisp_Object number; |
| 2770 | { |
| 2771 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number); |
| 2772 | |
| 2773 | if (FLOATP (number)) |
| 2774 | return (make_float (1.0 + XFLOAT_DATA (number))); |
| 2775 | |
| 2776 | XSETINT (number, XINT (number) + 1); |
| 2777 | return number; |
| 2778 | } |
| 2779 | |
| 2780 | DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0, |
| 2781 | doc: /* Return NUMBER minus one. NUMBER may be a number or a marker. |
| 2782 | Markers are converted to integers. */) |
| 2783 | (number) |
| 2784 | register Lisp_Object number; |
| 2785 | { |
| 2786 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number); |
| 2787 | |
| 2788 | if (FLOATP (number)) |
| 2789 | return (make_float (-1.0 + XFLOAT_DATA (number))); |
| 2790 | |
| 2791 | XSETINT (number, XINT (number) - 1); |
| 2792 | return number; |
| 2793 | } |
| 2794 | |
| 2795 | DEFUN ("lognot", Flognot, Slognot, 1, 1, 0, |
| 2796 | doc: /* Return the bitwise complement of NUMBER. NUMBER must be an integer. */) |
| 2797 | (number) |
| 2798 | register Lisp_Object number; |
| 2799 | { |
| 2800 | CHECK_NUMBER (number); |
| 2801 | XSETINT (number, ~XINT (number)); |
| 2802 | return number; |
| 2803 | } |
| 2804 | \f |
| 2805 | void |
| 2806 | syms_of_data () |
| 2807 | { |
| 2808 | Lisp_Object error_tail, arith_tail; |
| 2809 | |
| 2810 | Qquote = intern ("quote"); |
| 2811 | Qlambda = intern ("lambda"); |
| 2812 | Qsubr = intern ("subr"); |
| 2813 | Qerror_conditions = intern ("error-conditions"); |
| 2814 | Qerror_message = intern ("error-message"); |
| 2815 | Qtop_level = intern ("top-level"); |
| 2816 | |
| 2817 | Qerror = intern ("error"); |
| 2818 | Qquit = intern ("quit"); |
| 2819 | Qwrong_type_argument = intern ("wrong-type-argument"); |
| 2820 | Qargs_out_of_range = intern ("args-out-of-range"); |
| 2821 | Qvoid_function = intern ("void-function"); |
| 2822 | Qcyclic_function_indirection = intern ("cyclic-function-indirection"); |
| 2823 | Qcyclic_variable_indirection = intern ("cyclic-variable-indirection"); |
| 2824 | Qvoid_variable = intern ("void-variable"); |
| 2825 | Qsetting_constant = intern ("setting-constant"); |
| 2826 | Qinvalid_read_syntax = intern ("invalid-read-syntax"); |
| 2827 | |
| 2828 | Qinvalid_function = intern ("invalid-function"); |
| 2829 | Qwrong_number_of_arguments = intern ("wrong-number-of-arguments"); |
| 2830 | Qno_catch = intern ("no-catch"); |
| 2831 | Qend_of_file = intern ("end-of-file"); |
| 2832 | Qarith_error = intern ("arith-error"); |
| 2833 | Qbeginning_of_buffer = intern ("beginning-of-buffer"); |
| 2834 | Qend_of_buffer = intern ("end-of-buffer"); |
| 2835 | Qbuffer_read_only = intern ("buffer-read-only"); |
| 2836 | Qtext_read_only = intern ("text-read-only"); |
| 2837 | Qmark_inactive = intern ("mark-inactive"); |
| 2838 | |
| 2839 | Qlistp = intern ("listp"); |
| 2840 | Qconsp = intern ("consp"); |
| 2841 | Qsymbolp = intern ("symbolp"); |
| 2842 | Qkeywordp = intern ("keywordp"); |
| 2843 | Qintegerp = intern ("integerp"); |
| 2844 | Qnatnump = intern ("natnump"); |
| 2845 | Qwholenump = intern ("wholenump"); |
| 2846 | Qstringp = intern ("stringp"); |
| 2847 | Qarrayp = intern ("arrayp"); |
| 2848 | Qsequencep = intern ("sequencep"); |
| 2849 | Qbufferp = intern ("bufferp"); |
| 2850 | Qvectorp = intern ("vectorp"); |
| 2851 | Qchar_or_string_p = intern ("char-or-string-p"); |
| 2852 | Qmarkerp = intern ("markerp"); |
| 2853 | Qbuffer_or_string_p = intern ("buffer-or-string-p"); |
| 2854 | Qinteger_or_marker_p = intern ("integer-or-marker-p"); |
| 2855 | Qboundp = intern ("boundp"); |
| 2856 | Qfboundp = intern ("fboundp"); |
| 2857 | |
| 2858 | Qfloatp = intern ("floatp"); |
| 2859 | Qnumberp = intern ("numberp"); |
| 2860 | Qnumber_or_marker_p = intern ("number-or-marker-p"); |
| 2861 | |
| 2862 | Qchar_table_p = intern ("char-table-p"); |
| 2863 | Qvector_or_char_table_p = intern ("vector-or-char-table-p"); |
| 2864 | |
| 2865 | Qsubrp = intern ("subrp"); |
| 2866 | Qunevalled = intern ("unevalled"); |
| 2867 | Qmany = intern ("many"); |
| 2868 | |
| 2869 | Qcdr = intern ("cdr"); |
| 2870 | |
| 2871 | /* Handle automatic advice activation */ |
| 2872 | Qad_advice_info = intern ("ad-advice-info"); |
| 2873 | Qad_activate_internal = intern ("ad-activate-internal"); |
| 2874 | |
| 2875 | error_tail = Fcons (Qerror, Qnil); |
| 2876 | |
| 2877 | /* ERROR is used as a signaler for random errors for which nothing else is right */ |
| 2878 | |
| 2879 | Fput (Qerror, Qerror_conditions, |
| 2880 | error_tail); |
| 2881 | Fput (Qerror, Qerror_message, |
| 2882 | build_string ("error")); |
| 2883 | |
| 2884 | Fput (Qquit, Qerror_conditions, |
| 2885 | Fcons (Qquit, Qnil)); |
| 2886 | Fput (Qquit, Qerror_message, |
| 2887 | build_string ("Quit")); |
| 2888 | |
| 2889 | Fput (Qwrong_type_argument, Qerror_conditions, |
| 2890 | Fcons (Qwrong_type_argument, error_tail)); |
| 2891 | Fput (Qwrong_type_argument, Qerror_message, |
| 2892 | build_string ("Wrong type argument")); |
| 2893 | |
| 2894 | Fput (Qargs_out_of_range, Qerror_conditions, |
| 2895 | Fcons (Qargs_out_of_range, error_tail)); |
| 2896 | Fput (Qargs_out_of_range, Qerror_message, |
| 2897 | build_string ("Args out of range")); |
| 2898 | |
| 2899 | Fput (Qvoid_function, Qerror_conditions, |
| 2900 | Fcons (Qvoid_function, error_tail)); |
| 2901 | Fput (Qvoid_function, Qerror_message, |
| 2902 | build_string ("Symbol's function definition is void")); |
| 2903 | |
| 2904 | Fput (Qcyclic_function_indirection, Qerror_conditions, |
| 2905 | Fcons (Qcyclic_function_indirection, error_tail)); |
| 2906 | Fput (Qcyclic_function_indirection, Qerror_message, |
| 2907 | build_string ("Symbol's chain of function indirections contains a loop")); |
| 2908 | |
| 2909 | Fput (Qcyclic_variable_indirection, Qerror_conditions, |
| 2910 | Fcons (Qcyclic_variable_indirection, error_tail)); |
| 2911 | Fput (Qcyclic_variable_indirection, Qerror_message, |
| 2912 | build_string ("Symbol's chain of variable indirections contains a loop")); |
| 2913 | |
| 2914 | Qcircular_list = intern ("circular-list"); |
| 2915 | staticpro (&Qcircular_list); |
| 2916 | Fput (Qcircular_list, Qerror_conditions, |
| 2917 | Fcons (Qcircular_list, error_tail)); |
| 2918 | Fput (Qcircular_list, Qerror_message, |
| 2919 | build_string ("List contains a loop")); |
| 2920 | |
| 2921 | Fput (Qvoid_variable, Qerror_conditions, |
| 2922 | Fcons (Qvoid_variable, error_tail)); |
| 2923 | Fput (Qvoid_variable, Qerror_message, |
| 2924 | build_string ("Symbol's value as variable is void")); |
| 2925 | |
| 2926 | Fput (Qsetting_constant, Qerror_conditions, |
| 2927 | Fcons (Qsetting_constant, error_tail)); |
| 2928 | Fput (Qsetting_constant, Qerror_message, |
| 2929 | build_string ("Attempt to set a constant symbol")); |
| 2930 | |
| 2931 | Fput (Qinvalid_read_syntax, Qerror_conditions, |
| 2932 | Fcons (Qinvalid_read_syntax, error_tail)); |
| 2933 | Fput (Qinvalid_read_syntax, Qerror_message, |
| 2934 | build_string ("Invalid read syntax")); |
| 2935 | |
| 2936 | Fput (Qinvalid_function, Qerror_conditions, |
| 2937 | Fcons (Qinvalid_function, error_tail)); |
| 2938 | Fput (Qinvalid_function, Qerror_message, |
| 2939 | build_string ("Invalid function")); |
| 2940 | |
| 2941 | Fput (Qwrong_number_of_arguments, Qerror_conditions, |
| 2942 | Fcons (Qwrong_number_of_arguments, error_tail)); |
| 2943 | Fput (Qwrong_number_of_arguments, Qerror_message, |
| 2944 | build_string ("Wrong number of arguments")); |
| 2945 | |
| 2946 | Fput (Qno_catch, Qerror_conditions, |
| 2947 | Fcons (Qno_catch, error_tail)); |
| 2948 | Fput (Qno_catch, Qerror_message, |
| 2949 | build_string ("No catch for tag")); |
| 2950 | |
| 2951 | Fput (Qend_of_file, Qerror_conditions, |
| 2952 | Fcons (Qend_of_file, error_tail)); |
| 2953 | Fput (Qend_of_file, Qerror_message, |
| 2954 | build_string ("End of file during parsing")); |
| 2955 | |
| 2956 | arith_tail = Fcons (Qarith_error, error_tail); |
| 2957 | Fput (Qarith_error, Qerror_conditions, |
| 2958 | arith_tail); |
| 2959 | Fput (Qarith_error, Qerror_message, |
| 2960 | build_string ("Arithmetic error")); |
| 2961 | |
| 2962 | Fput (Qbeginning_of_buffer, Qerror_conditions, |
| 2963 | Fcons (Qbeginning_of_buffer, error_tail)); |
| 2964 | Fput (Qbeginning_of_buffer, Qerror_message, |
| 2965 | build_string ("Beginning of buffer")); |
| 2966 | |
| 2967 | Fput (Qend_of_buffer, Qerror_conditions, |
| 2968 | Fcons (Qend_of_buffer, error_tail)); |
| 2969 | Fput (Qend_of_buffer, Qerror_message, |
| 2970 | build_string ("End of buffer")); |
| 2971 | |
| 2972 | Fput (Qbuffer_read_only, Qerror_conditions, |
| 2973 | Fcons (Qbuffer_read_only, error_tail)); |
| 2974 | Fput (Qbuffer_read_only, Qerror_message, |
| 2975 | build_string ("Buffer is read-only")); |
| 2976 | |
| 2977 | Fput (Qtext_read_only, Qerror_conditions, |
| 2978 | Fcons (Qtext_read_only, error_tail)); |
| 2979 | Fput (Qtext_read_only, Qerror_message, |
| 2980 | build_string ("Text is read-only")); |
| 2981 | |
| 2982 | Qrange_error = intern ("range-error"); |
| 2983 | Qdomain_error = intern ("domain-error"); |
| 2984 | Qsingularity_error = intern ("singularity-error"); |
| 2985 | Qoverflow_error = intern ("overflow-error"); |
| 2986 | Qunderflow_error = intern ("underflow-error"); |
| 2987 | |
| 2988 | Fput (Qdomain_error, Qerror_conditions, |
| 2989 | Fcons (Qdomain_error, arith_tail)); |
| 2990 | Fput (Qdomain_error, Qerror_message, |
| 2991 | build_string ("Arithmetic domain error")); |
| 2992 | |
| 2993 | Fput (Qrange_error, Qerror_conditions, |
| 2994 | Fcons (Qrange_error, arith_tail)); |
| 2995 | Fput (Qrange_error, Qerror_message, |
| 2996 | build_string ("Arithmetic range error")); |
| 2997 | |
| 2998 | Fput (Qsingularity_error, Qerror_conditions, |
| 2999 | Fcons (Qsingularity_error, Fcons (Qdomain_error, arith_tail))); |
| 3000 | Fput (Qsingularity_error, Qerror_message, |
| 3001 | build_string ("Arithmetic singularity error")); |
| 3002 | |
| 3003 | Fput (Qoverflow_error, Qerror_conditions, |
| 3004 | Fcons (Qoverflow_error, Fcons (Qdomain_error, arith_tail))); |
| 3005 | Fput (Qoverflow_error, Qerror_message, |
| 3006 | build_string ("Arithmetic overflow error")); |
| 3007 | |
| 3008 | Fput (Qunderflow_error, Qerror_conditions, |
| 3009 | Fcons (Qunderflow_error, Fcons (Qdomain_error, arith_tail))); |
| 3010 | Fput (Qunderflow_error, Qerror_message, |
| 3011 | build_string ("Arithmetic underflow error")); |
| 3012 | |
| 3013 | staticpro (&Qrange_error); |
| 3014 | staticpro (&Qdomain_error); |
| 3015 | staticpro (&Qsingularity_error); |
| 3016 | staticpro (&Qoverflow_error); |
| 3017 | staticpro (&Qunderflow_error); |
| 3018 | |
| 3019 | staticpro (&Qnil); |
| 3020 | staticpro (&Qt); |
| 3021 | staticpro (&Qquote); |
| 3022 | staticpro (&Qlambda); |
| 3023 | staticpro (&Qsubr); |
| 3024 | staticpro (&Qunbound); |
| 3025 | staticpro (&Qerror_conditions); |
| 3026 | staticpro (&Qerror_message); |
| 3027 | staticpro (&Qtop_level); |
| 3028 | |
| 3029 | staticpro (&Qerror); |
| 3030 | staticpro (&Qquit); |
| 3031 | staticpro (&Qwrong_type_argument); |
| 3032 | staticpro (&Qargs_out_of_range); |
| 3033 | staticpro (&Qvoid_function); |
| 3034 | staticpro (&Qcyclic_function_indirection); |
| 3035 | staticpro (&Qvoid_variable); |
| 3036 | staticpro (&Qsetting_constant); |
| 3037 | staticpro (&Qinvalid_read_syntax); |
| 3038 | staticpro (&Qwrong_number_of_arguments); |
| 3039 | staticpro (&Qinvalid_function); |
| 3040 | staticpro (&Qno_catch); |
| 3041 | staticpro (&Qend_of_file); |
| 3042 | staticpro (&Qarith_error); |
| 3043 | staticpro (&Qbeginning_of_buffer); |
| 3044 | staticpro (&Qend_of_buffer); |
| 3045 | staticpro (&Qbuffer_read_only); |
| 3046 | staticpro (&Qtext_read_only); |
| 3047 | staticpro (&Qmark_inactive); |
| 3048 | |
| 3049 | staticpro (&Qlistp); |
| 3050 | staticpro (&Qconsp); |
| 3051 | staticpro (&Qsymbolp); |
| 3052 | staticpro (&Qkeywordp); |
| 3053 | staticpro (&Qintegerp); |
| 3054 | staticpro (&Qnatnump); |
| 3055 | staticpro (&Qwholenump); |
| 3056 | staticpro (&Qstringp); |
| 3057 | staticpro (&Qarrayp); |
| 3058 | staticpro (&Qsequencep); |
| 3059 | staticpro (&Qbufferp); |
| 3060 | staticpro (&Qvectorp); |
| 3061 | staticpro (&Qchar_or_string_p); |
| 3062 | staticpro (&Qmarkerp); |
| 3063 | staticpro (&Qbuffer_or_string_p); |
| 3064 | staticpro (&Qinteger_or_marker_p); |
| 3065 | staticpro (&Qfloatp); |
| 3066 | staticpro (&Qnumberp); |
| 3067 | staticpro (&Qnumber_or_marker_p); |
| 3068 | staticpro (&Qchar_table_p); |
| 3069 | staticpro (&Qvector_or_char_table_p); |
| 3070 | staticpro (&Qsubrp); |
| 3071 | staticpro (&Qmany); |
| 3072 | staticpro (&Qunevalled); |
| 3073 | |
| 3074 | staticpro (&Qboundp); |
| 3075 | staticpro (&Qfboundp); |
| 3076 | staticpro (&Qcdr); |
| 3077 | staticpro (&Qad_advice_info); |
| 3078 | staticpro (&Qad_activate_internal); |
| 3079 | |
| 3080 | /* Types that type-of returns. */ |
| 3081 | Qinteger = intern ("integer"); |
| 3082 | Qsymbol = intern ("symbol"); |
| 3083 | Qstring = intern ("string"); |
| 3084 | Qcons = intern ("cons"); |
| 3085 | Qmarker = intern ("marker"); |
| 3086 | Qoverlay = intern ("overlay"); |
| 3087 | Qfloat = intern ("float"); |
| 3088 | Qwindow_configuration = intern ("window-configuration"); |
| 3089 | Qprocess = intern ("process"); |
| 3090 | Qwindow = intern ("window"); |
| 3091 | /* Qsubr = intern ("subr"); */ |
| 3092 | Qcompiled_function = intern ("compiled-function"); |
| 3093 | Qbuffer = intern ("buffer"); |
| 3094 | Qframe = intern ("frame"); |
| 3095 | Qvector = intern ("vector"); |
| 3096 | Qchar_table = intern ("char-table"); |
| 3097 | Qbool_vector = intern ("bool-vector"); |
| 3098 | Qhash_table = intern ("hash-table"); |
| 3099 | |
| 3100 | staticpro (&Qinteger); |
| 3101 | staticpro (&Qsymbol); |
| 3102 | staticpro (&Qstring); |
| 3103 | staticpro (&Qcons); |
| 3104 | staticpro (&Qmarker); |
| 3105 | staticpro (&Qoverlay); |
| 3106 | staticpro (&Qfloat); |
| 3107 | staticpro (&Qwindow_configuration); |
| 3108 | staticpro (&Qprocess); |
| 3109 | staticpro (&Qwindow); |
| 3110 | /* staticpro (&Qsubr); */ |
| 3111 | staticpro (&Qcompiled_function); |
| 3112 | staticpro (&Qbuffer); |
| 3113 | staticpro (&Qframe); |
| 3114 | staticpro (&Qvector); |
| 3115 | staticpro (&Qchar_table); |
| 3116 | staticpro (&Qbool_vector); |
| 3117 | staticpro (&Qhash_table); |
| 3118 | |
| 3119 | defsubr (&Sindirect_variable); |
| 3120 | defsubr (&Ssubr_interactive_form); |
| 3121 | defsubr (&Seq); |
| 3122 | defsubr (&Snull); |
| 3123 | defsubr (&Stype_of); |
| 3124 | defsubr (&Slistp); |
| 3125 | defsubr (&Snlistp); |
| 3126 | defsubr (&Sconsp); |
| 3127 | defsubr (&Satom); |
| 3128 | defsubr (&Sintegerp); |
| 3129 | defsubr (&Sinteger_or_marker_p); |
| 3130 | defsubr (&Snumberp); |
| 3131 | defsubr (&Snumber_or_marker_p); |
| 3132 | defsubr (&Sfloatp); |
| 3133 | defsubr (&Snatnump); |
| 3134 | defsubr (&Ssymbolp); |
| 3135 | defsubr (&Skeywordp); |
| 3136 | defsubr (&Sstringp); |
| 3137 | defsubr (&Smultibyte_string_p); |
| 3138 | defsubr (&Svectorp); |
| 3139 | defsubr (&Schar_table_p); |
| 3140 | defsubr (&Svector_or_char_table_p); |
| 3141 | defsubr (&Sbool_vector_p); |
| 3142 | defsubr (&Sarrayp); |
| 3143 | defsubr (&Ssequencep); |
| 3144 | defsubr (&Sbufferp); |
| 3145 | defsubr (&Smarkerp); |
| 3146 | defsubr (&Ssubrp); |
| 3147 | defsubr (&Sbyte_code_function_p); |
| 3148 | defsubr (&Schar_or_string_p); |
| 3149 | defsubr (&Scar); |
| 3150 | defsubr (&Scdr); |
| 3151 | defsubr (&Scar_safe); |
| 3152 | defsubr (&Scdr_safe); |
| 3153 | defsubr (&Ssetcar); |
| 3154 | defsubr (&Ssetcdr); |
| 3155 | defsubr (&Ssymbol_function); |
| 3156 | defsubr (&Sindirect_function); |
| 3157 | defsubr (&Ssymbol_plist); |
| 3158 | defsubr (&Ssymbol_name); |
| 3159 | defsubr (&Smakunbound); |
| 3160 | defsubr (&Sfmakunbound); |
| 3161 | defsubr (&Sboundp); |
| 3162 | defsubr (&Sfboundp); |
| 3163 | defsubr (&Sfset); |
| 3164 | defsubr (&Sdefalias); |
| 3165 | defsubr (&Ssetplist); |
| 3166 | defsubr (&Ssymbol_value); |
| 3167 | defsubr (&Sset); |
| 3168 | defsubr (&Sdefault_boundp); |
| 3169 | defsubr (&Sdefault_value); |
| 3170 | defsubr (&Sset_default); |
| 3171 | defsubr (&Ssetq_default); |
| 3172 | defsubr (&Smake_variable_buffer_local); |
| 3173 | defsubr (&Smake_local_variable); |
| 3174 | defsubr (&Skill_local_variable); |
| 3175 | defsubr (&Smake_variable_frame_local); |
| 3176 | defsubr (&Slocal_variable_p); |
| 3177 | defsubr (&Slocal_variable_if_set_p); |
| 3178 | defsubr (&Saref); |
| 3179 | defsubr (&Saset); |
| 3180 | defsubr (&Snumber_to_string); |
| 3181 | defsubr (&Sstring_to_number); |
| 3182 | defsubr (&Seqlsign); |
| 3183 | defsubr (&Slss); |
| 3184 | defsubr (&Sgtr); |
| 3185 | defsubr (&Sleq); |
| 3186 | defsubr (&Sgeq); |
| 3187 | defsubr (&Sneq); |
| 3188 | defsubr (&Szerop); |
| 3189 | defsubr (&Splus); |
| 3190 | defsubr (&Sminus); |
| 3191 | defsubr (&Stimes); |
| 3192 | defsubr (&Squo); |
| 3193 | defsubr (&Srem); |
| 3194 | defsubr (&Smod); |
| 3195 | defsubr (&Smax); |
| 3196 | defsubr (&Smin); |
| 3197 | defsubr (&Slogand); |
| 3198 | defsubr (&Slogior); |
| 3199 | defsubr (&Slogxor); |
| 3200 | defsubr (&Slsh); |
| 3201 | defsubr (&Sash); |
| 3202 | defsubr (&Sadd1); |
| 3203 | defsubr (&Ssub1); |
| 3204 | defsubr (&Slognot); |
| 3205 | defsubr (&Ssubr_arity); |
| 3206 | |
| 3207 | XSYMBOL (Qwholenump)->function = XSYMBOL (Qnatnump)->function; |
| 3208 | |
| 3209 | DEFVAR_LISP ("most-positive-fixnum", &Vmost_positive_fixnum, |
| 3210 | doc: /* The largest value that is representable in a Lisp integer. */); |
| 3211 | Vmost_positive_fixnum = make_number (MOST_POSITIVE_FIXNUM); |
| 3212 | |
| 3213 | DEFVAR_LISP ("most-negative-fixnum", &Vmost_negative_fixnum, |
| 3214 | doc: /* The smallest value that is representable in a Lisp integer. */); |
| 3215 | Vmost_negative_fixnum = make_number (MOST_NEGATIVE_FIXNUM); |
| 3216 | } |
| 3217 | |
| 3218 | SIGTYPE |
| 3219 | arith_error (signo) |
| 3220 | int signo; |
| 3221 | { |
| 3222 | #if defined(USG) && !defined(POSIX_SIGNALS) |
| 3223 | /* USG systems forget handlers when they are used; |
| 3224 | must reestablish each time */ |
| 3225 | signal (signo, arith_error); |
| 3226 | #endif /* USG */ |
| 3227 | #ifdef VMS |
| 3228 | /* VMS systems are like USG. */ |
| 3229 | signal (signo, arith_error); |
| 3230 | #endif /* VMS */ |
| 3231 | #ifdef BSD4_1 |
| 3232 | sigrelse (SIGFPE); |
| 3233 | #else /* not BSD4_1 */ |
| 3234 | sigsetmask (SIGEMPTYMASK); |
| 3235 | #endif /* not BSD4_1 */ |
| 3236 | |
| 3237 | Fsignal (Qarith_error, Qnil); |
| 3238 | } |
| 3239 | |
| 3240 | void |
| 3241 | init_data () |
| 3242 | { |
| 3243 | /* Don't do this if just dumping out. |
| 3244 | We don't want to call `signal' in this case |
| 3245 | so that we don't have trouble with dumping |
| 3246 | signal-delivering routines in an inconsistent state. */ |
| 3247 | #ifndef CANNOT_DUMP |
| 3248 | if (!initialized) |
| 3249 | return; |
| 3250 | #endif /* CANNOT_DUMP */ |
| 3251 | signal (SIGFPE, arith_error); |
| 3252 | |
| 3253 | #ifdef uts |
| 3254 | signal (SIGEMT, arith_error); |
| 3255 | #endif /* uts */ |
| 3256 | } |