428
+ − 1 /* Specifier implementation
+ − 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
+ − 3 Copyright (C) 1995, 1996 Ben Wing.
+ − 4 Copyright (C) 1995 Sun Microsystems, Inc.
+ − 5
+ − 6 This file is part of XEmacs.
+ − 7
+ − 8 XEmacs is free software; you can redistribute it and/or modify it
+ − 9 under the terms of the GNU General Public License as published by the
+ − 10 Free Software Foundation; either version 2, or (at your option) any
+ − 11 later version.
+ − 12
+ − 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 16 for more details.
+ − 17
+ − 18 You should have received a copy of the GNU General Public License
+ − 19 along with XEmacs; see the file COPYING. If not, write to
+ − 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 21 Boston, MA 02111-1307, USA. */
+ − 22
+ − 23 /* Synched up with: Not in FSF. */
+ − 24
+ − 25 /* Design by Ben Wing;
+ − 26 Original version by Chuck Thompson;
+ − 27 rewritten by Ben Wing;
+ − 28 Magic specifiers by Kirill Katsnelson;
+ − 29 */
+ − 30
+ − 31 #include <config.h>
+ − 32 #include "lisp.h"
+ − 33
+ − 34 #include "buffer.h"
+ − 35 #include "device.h"
+ − 36 #include "frame.h"
+ − 37 #include "opaque.h"
+ − 38 #include "specifier.h"
+ − 39 #include "window.h"
+ − 40 #include "chartab.h"
+ − 41 #include "rangetab.h"
+ − 42
+ − 43 Lisp_Object Qspecifierp;
442
+ − 44 Lisp_Object Qremove_tag_set_prepend, Qremove_tag_set_append;
+ − 45 Lisp_Object Qremove_locale, Qremove_locale_type;
428
+ − 46
+ − 47 Lisp_Object Qconsole_type, Qdevice_class;
+ − 48
+ − 49 static Lisp_Object Vuser_defined_tags;
+ − 50
+ − 51 typedef struct specifier_type_entry specifier_type_entry;
+ − 52 struct specifier_type_entry
+ − 53 {
+ − 54 Lisp_Object symbol;
+ − 55 struct specifier_methods *meths;
+ − 56 };
+ − 57
+ − 58 typedef struct
+ − 59 {
+ − 60 Dynarr_declare (specifier_type_entry);
+ − 61 } specifier_type_entry_dynarr;
+ − 62
+ − 63 static specifier_type_entry_dynarr *the_specifier_type_entry_dynarr;
+ − 64
+ − 65 static const struct lrecord_description ste_description_1[] = {
440
+ − 66 { XD_LISP_OBJECT, offsetof (specifier_type_entry, symbol) },
442
+ − 67 { XD_STRUCT_PTR, offsetof (specifier_type_entry, meths), 1,
+ − 68 &specifier_methods_description },
428
+ − 69 { XD_END }
+ − 70 };
+ − 71
+ − 72 static const struct struct_description ste_description = {
440
+ − 73 sizeof (specifier_type_entry),
428
+ − 74 ste_description_1
+ − 75 };
+ − 76
+ − 77 static const struct lrecord_description sted_description_1[] = {
440
+ − 78 XD_DYNARR_DESC (specifier_type_entry_dynarr, &ste_description),
428
+ − 79 { XD_END }
+ − 80 };
+ − 81
+ − 82 static const struct struct_description sted_description = {
440
+ − 83 sizeof (specifier_type_entry_dynarr),
428
+ − 84 sted_description_1
+ − 85 };
+ − 86
+ − 87 static Lisp_Object Vspecifier_type_list;
+ − 88
+ − 89 static Lisp_Object Vcached_specifiers;
+ − 90 /* Do NOT mark through this, or specifiers will never be GC'd. */
+ − 91 static Lisp_Object Vall_specifiers;
+ − 92
+ − 93 static Lisp_Object Vunlock_ghost_specifiers;
+ − 94
+ − 95 /* #### The purpose of this is to check for inheritance loops
+ − 96 in specifiers that can inherit from other specifiers, but it's
+ − 97 not yet implemented.
+ − 98
+ − 99 #### Look into this for 19.14. */
+ − 100 /* static Lisp_Object_dynarr current_specifiers; */
+ − 101
+ − 102 static void recompute_cached_specifier_everywhere (Lisp_Object specifier);
+ − 103
+ − 104 EXFUN (Fspecifier_specs, 4);
+ − 105 EXFUN (Fremove_specifier, 4);
+ − 106
+ − 107
+ − 108 /************************************************************************/
+ − 109 /* Specifier object methods */
+ − 110 /************************************************************************/
+ − 111
+ − 112 /* Remove dead objects from the specified assoc list. */
+ − 113
+ − 114 static Lisp_Object
+ − 115 cleanup_assoc_list (Lisp_Object list)
+ − 116 {
+ − 117 Lisp_Object loop, prev, retval;
+ − 118
+ − 119 loop = retval = list;
+ − 120 prev = Qnil;
+ − 121
+ − 122 while (!NILP (loop))
+ − 123 {
+ − 124 Lisp_Object entry = XCAR (loop);
+ − 125 Lisp_Object key = XCAR (entry);
+ − 126
+ − 127 /* remember, dead windows can become alive again. */
+ − 128 if (!WINDOWP (key) && object_dead_p (key))
+ − 129 {
+ − 130 if (NILP (prev))
+ − 131 {
+ − 132 /* Removing the head. */
+ − 133 retval = XCDR (retval);
+ − 134 }
+ − 135 else
+ − 136 {
+ − 137 Fsetcdr (prev, XCDR (loop));
+ − 138 }
+ − 139 }
+ − 140 else
+ − 141 prev = loop;
+ − 142
+ − 143 loop = XCDR (loop);
+ − 144 }
+ − 145
+ − 146 return retval;
+ − 147 }
+ − 148
+ − 149 /* Remove dead objects from the various lists so that they
+ − 150 don't keep getting marked as long as this specifier exists and
+ − 151 therefore wasting memory. */
+ − 152
+ − 153 void
+ − 154 cleanup_specifiers (void)
+ − 155 {
+ − 156 Lisp_Object rest;
+ − 157
+ − 158 for (rest = Vall_specifiers;
+ − 159 !NILP (rest);
+ − 160 rest = XSPECIFIER (rest)->next_specifier)
+ − 161 {
440
+ − 162 Lisp_Specifier *sp = XSPECIFIER (rest);
428
+ − 163 /* This effectively changes the specifier specs.
+ − 164 However, there's no need to call
+ − 165 recompute_cached_specifier_everywhere() or the
+ − 166 after-change methods because the only specs we
+ − 167 are removing are for dead objects, and they can
+ − 168 never have any effect on the specifier values:
+ − 169 specifiers can only be instantiated over live
+ − 170 objects, and you can't derive a dead object
+ − 171 from a live one. */
+ − 172 sp->device_specs = cleanup_assoc_list (sp->device_specs);
+ − 173 sp->frame_specs = cleanup_assoc_list (sp->frame_specs);
+ − 174 sp->buffer_specs = cleanup_assoc_list (sp->buffer_specs);
+ − 175 /* windows are handled specially because dead windows
+ − 176 can be resurrected */
+ − 177 }
+ − 178 }
+ − 179
+ − 180 void
+ − 181 kill_specifier_buffer_locals (Lisp_Object buffer)
+ − 182 {
+ − 183 Lisp_Object rest;
+ − 184
+ − 185 for (rest = Vall_specifiers;
+ − 186 !NILP (rest);
+ − 187 rest = XSPECIFIER (rest)->next_specifier)
+ − 188 {
440
+ − 189 Lisp_Specifier *sp = XSPECIFIER (rest);
428
+ − 190
+ − 191 /* Make sure we're actually going to be changing something.
+ − 192 Fremove_specifier() always calls
+ − 193 recompute_cached_specifier_everywhere() (#### but should
+ − 194 be smarter about this). */
+ − 195 if (!NILP (assq_no_quit (buffer, sp->buffer_specs)))
+ − 196 Fremove_specifier (rest, buffer, Qnil, Qnil);
+ − 197 }
+ − 198 }
+ − 199
+ − 200 static Lisp_Object
+ − 201 mark_specifier (Lisp_Object obj)
+ − 202 {
440
+ − 203 Lisp_Specifier *specifier = XSPECIFIER (obj);
428
+ − 204
+ − 205 mark_object (specifier->global_specs);
+ − 206 mark_object (specifier->device_specs);
+ − 207 mark_object (specifier->frame_specs);
+ − 208 mark_object (specifier->window_specs);
+ − 209 mark_object (specifier->buffer_specs);
+ − 210 mark_object (specifier->magic_parent);
+ − 211 mark_object (specifier->fallback);
+ − 212 if (!GHOST_SPECIFIER_P (XSPECIFIER (obj)))
+ − 213 MAYBE_SPECMETH (specifier, mark, (obj));
+ − 214 return Qnil;
+ − 215 }
+ − 216
+ − 217 /* The idea here is that the specifier specs point to locales
+ − 218 (windows, buffers, frames, and devices), and we want to make sure
+ − 219 that the specs disappear automatically when the associated locale
+ − 220 is no longer in use. For all but windows, "no longer in use"
+ − 221 corresponds exactly to when the object is deleted (non-deleted
+ − 222 objects are always held permanently in special lists, and deleted
+ − 223 objects are never on these lists and never reusable). To handle
+ − 224 this, we just have cleanup_specifiers() called periodically
+ − 225 (at the beginning of garbage collection); it removes all dead
+ − 226 objects.
+ − 227
+ − 228 For windows, however, it's trickier because dead objects can be
+ − 229 converted to live ones again if the dead object is in a window
+ − 230 configuration. Therefore, for windows, "no longer in use"
+ − 231 corresponds to when the window object is garbage-collected.
+ − 232 We now use weak lists for this purpose.
+ − 233
+ − 234 */
+ − 235
+ − 236 void
+ − 237 prune_specifiers (void)
+ − 238 {
+ − 239 Lisp_Object rest, prev = Qnil;
+ − 240
+ − 241 for (rest = Vall_specifiers;
+ − 242 !NILP (rest);
+ − 243 rest = XSPECIFIER (rest)->next_specifier)
+ − 244 {
+ − 245 if (! marked_p (rest))
+ − 246 {
440
+ − 247 Lisp_Specifier* sp = XSPECIFIER (rest);
428
+ − 248 /* A bit of assertion that we're removing both parts of the
+ − 249 magic one altogether */
+ − 250 assert (!MAGIC_SPECIFIER_P(sp)
+ − 251 || (BODILY_SPECIFIER_P(sp) && marked_p (sp->fallback))
+ − 252 || (GHOST_SPECIFIER_P(sp) && marked_p (sp->magic_parent)));
+ − 253 /* This specifier is garbage. Remove it from the list. */
+ − 254 if (NILP (prev))
+ − 255 Vall_specifiers = sp->next_specifier;
+ − 256 else
+ − 257 XSPECIFIER (prev)->next_specifier = sp->next_specifier;
+ − 258 }
+ − 259 else
+ − 260 prev = rest;
+ − 261 }
+ − 262 }
+ − 263
+ − 264 static void
+ − 265 print_specifier (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+ − 266 {
440
+ − 267 Lisp_Specifier *sp = XSPECIFIER (obj);
428
+ − 268 char buf[100];
+ − 269 int count = specpdl_depth ();
+ − 270 Lisp_Object the_specs;
+ − 271
+ − 272 if (print_readably)
563
+ − 273 printing_unreadable_object ("#<%s-specifier 0x%x>",
+ − 274 sp->methods->name, sp->header.uid);
428
+ − 275
+ − 276 sprintf (buf, "#<%s-specifier global=", sp->methods->name);
+ − 277 write_c_string (buf, printcharfun);
+ − 278 specbind (Qprint_string_length, make_int (100));
+ − 279 specbind (Qprint_length, make_int (5));
+ − 280 the_specs = Fspecifier_specs (obj, Qglobal, Qnil, Qnil);
+ − 281 if (NILP (the_specs))
+ − 282 /* there are no global specs */
+ − 283 write_c_string ("<unspecified>", printcharfun);
+ − 284 else
+ − 285 print_internal (the_specs, printcharfun, 1);
+ − 286 if (!NILP (sp->fallback))
+ − 287 {
+ − 288 write_c_string (" fallback=", printcharfun);
+ − 289 print_internal (sp->fallback, printcharfun, escapeflag);
+ − 290 }
+ − 291 unbind_to (count, Qnil);
+ − 292 sprintf (buf, " 0x%x>", sp->header.uid);
+ − 293 write_c_string (buf, printcharfun);
+ − 294 }
+ − 295
+ − 296 static void
+ − 297 finalize_specifier (void *header, int for_disksave)
+ − 298 {
440
+ − 299 Lisp_Specifier *sp = (Lisp_Specifier *) header;
428
+ − 300 /* don't be snafued by the disksave finalization. */
+ − 301 if (!for_disksave && !GHOST_SPECIFIER_P(sp) && sp->caching)
+ − 302 {
+ − 303 xfree (sp->caching);
+ − 304 sp->caching = 0;
+ − 305 }
+ − 306 }
+ − 307
+ − 308 static int
+ − 309 specifier_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
+ − 310 {
440
+ − 311 Lisp_Specifier *s1 = XSPECIFIER (obj1);
+ − 312 Lisp_Specifier *s2 = XSPECIFIER (obj2);
428
+ − 313 int retval;
+ − 314 Lisp_Object old_inhibit_quit = Vinhibit_quit;
+ − 315
+ − 316 /* This function can be called from within redisplay.
+ − 317 internal_equal can trigger a quit. That leads to Bad Things. */
+ − 318 Vinhibit_quit = Qt;
+ − 319
+ − 320 depth++;
+ − 321 retval =
+ − 322 (s1->methods == s2->methods &&
+ − 323 internal_equal (s1->global_specs, s2->global_specs, depth) &&
+ − 324 internal_equal (s1->device_specs, s2->device_specs, depth) &&
+ − 325 internal_equal (s1->frame_specs, s2->frame_specs, depth) &&
+ − 326 internal_equal (s1->window_specs, s2->window_specs, depth) &&
+ − 327 internal_equal (s1->buffer_specs, s2->buffer_specs, depth) &&
+ − 328 internal_equal (s1->fallback, s2->fallback, depth));
+ − 329
+ − 330 if (retval && HAS_SPECMETH_P (s1, equal))
+ − 331 retval = SPECMETH (s1, equal, (obj1, obj2, depth - 1));
+ − 332
+ − 333 Vinhibit_quit = old_inhibit_quit;
+ − 334 return retval;
+ − 335 }
+ − 336
+ − 337 static unsigned long
+ − 338 specifier_hash (Lisp_Object obj, int depth)
+ − 339 {
440
+ − 340 Lisp_Specifier *s = XSPECIFIER (obj);
428
+ − 341
+ − 342 /* specifier hashing is a bit problematic because there are so
+ − 343 many places where data can be stored. We pick what are perhaps
+ − 344 the most likely places where interesting stuff will be. */
+ − 345 return HASH5 ((HAS_SPECMETH_P (s, hash) ?
+ − 346 SPECMETH (s, hash, (obj, depth)) : 0),
+ − 347 (unsigned long) s->methods,
+ − 348 internal_hash (s->global_specs, depth + 1),
+ − 349 internal_hash (s->frame_specs, depth + 1),
+ − 350 internal_hash (s->buffer_specs, depth + 1));
+ − 351 }
+ − 352
456
+ − 353 inline static size_t
+ − 354 aligned_sizeof_specifier (size_t specifier_type_specific_size)
+ − 355 {
+ − 356 return ALIGN_SIZE (offsetof (Lisp_Specifier, data)
+ − 357 + specifier_type_specific_size,
+ − 358 ALIGNOF (max_align_t));
+ − 359 }
+ − 360
428
+ − 361 static size_t
442
+ − 362 sizeof_specifier (const void *header)
428
+ − 363 {
456
+ − 364 const Lisp_Specifier *p = (const Lisp_Specifier *) header;
+ − 365 return aligned_sizeof_specifier (GHOST_SPECIFIER_P (p)
+ − 366 ? 0
+ − 367 : p->methods->extra_data_size);
428
+ − 368 }
+ − 369
+ − 370 static const struct lrecord_description specifier_methods_description_1[] = {
440
+ − 371 { XD_LISP_OBJECT, offsetof (struct specifier_methods, predicate_symbol) },
428
+ − 372 { XD_END }
+ − 373 };
+ − 374
+ − 375 const struct struct_description specifier_methods_description = {
440
+ − 376 sizeof (struct specifier_methods),
428
+ − 377 specifier_methods_description_1
+ − 378 };
+ − 379
+ − 380 static const struct lrecord_description specifier_caching_description_1[] = {
+ − 381 { XD_END }
+ − 382 };
+ − 383
+ − 384 static const struct struct_description specifier_caching_description = {
440
+ − 385 sizeof (struct specifier_caching),
428
+ − 386 specifier_caching_description_1
+ − 387 };
+ − 388
+ − 389 static const struct lrecord_description specifier_description[] = {
442
+ − 390 { XD_STRUCT_PTR, offsetof (Lisp_Specifier, methods), 1,
+ − 391 &specifier_methods_description },
440
+ − 392 { XD_LO_LINK, offsetof (Lisp_Specifier, next_specifier) },
+ − 393 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, global_specs) },
+ − 394 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, device_specs) },
+ − 395 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, frame_specs) },
+ − 396 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, window_specs) },
+ − 397 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, buffer_specs) },
442
+ − 398 { XD_STRUCT_PTR, offsetof (Lisp_Specifier, caching), 1,
+ − 399 &specifier_caching_description },
440
+ − 400 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, magic_parent) },
+ − 401 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, fallback) },
428
+ − 402 { XD_SPECIFIER_END }
+ − 403 };
+ − 404
+ − 405 const struct lrecord_description specifier_empty_extra_description[] = {
+ − 406 { XD_END }
+ − 407 };
+ − 408
+ − 409 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("specifier", specifier,
+ − 410 mark_specifier, print_specifier,
+ − 411 finalize_specifier,
+ − 412 specifier_equal, specifier_hash,
+ − 413 specifier_description,
+ − 414 sizeof_specifier,
440
+ − 415 Lisp_Specifier);
428
+ − 416
+ − 417 /************************************************************************/
+ − 418 /* Creating specifiers */
+ − 419 /************************************************************************/
+ − 420
+ − 421 static struct specifier_methods *
578
+ − 422 decode_specifier_type (Lisp_Object type, Error_Behavior errb)
428
+ − 423 {
+ − 424 int i;
+ − 425
+ − 426 for (i = 0; i < Dynarr_length (the_specifier_type_entry_dynarr); i++)
+ − 427 {
+ − 428 if (EQ (type, Dynarr_at (the_specifier_type_entry_dynarr, i).symbol))
+ − 429 return Dynarr_at (the_specifier_type_entry_dynarr, i).meths;
+ − 430 }
+ − 431
563
+ − 432 maybe_invalid_argument ("Invalid specifier type",
442
+ − 433 type, Qspecifier, errb);
428
+ − 434
+ − 435 return 0;
+ − 436 }
+ − 437
+ − 438 static int
+ − 439 valid_specifier_type_p (Lisp_Object type)
+ − 440 {
+ − 441 return decode_specifier_type (type, ERROR_ME_NOT) != 0;
+ − 442 }
+ − 443
+ − 444 DEFUN ("valid-specifier-type-p", Fvalid_specifier_type_p, 1, 1, 0, /*
+ − 445 Given a SPECIFIER-TYPE, return non-nil if it is valid.
+ − 446 Valid types are 'generic, 'integer, boolean, 'color, 'font, 'image,
+ − 447 'face-boolean, and 'toolbar.
+ − 448 */
+ − 449 (specifier_type))
+ − 450 {
+ − 451 return valid_specifier_type_p (specifier_type) ? Qt : Qnil;
+ − 452 }
+ − 453
+ − 454 DEFUN ("specifier-type-list", Fspecifier_type_list, 0, 0, 0, /*
+ − 455 Return a list of valid specifier types.
+ − 456 */
+ − 457 ())
+ − 458 {
+ − 459 return Fcopy_sequence (Vspecifier_type_list);
+ − 460 }
+ − 461
+ − 462 void
+ − 463 add_entry_to_specifier_type_list (Lisp_Object symbol,
+ − 464 struct specifier_methods *meths)
+ − 465 {
+ − 466 struct specifier_type_entry entry;
+ − 467
+ − 468 entry.symbol = symbol;
+ − 469 entry.meths = meths;
+ − 470 Dynarr_add (the_specifier_type_entry_dynarr, entry);
+ − 471 Vspecifier_type_list = Fcons (symbol, Vspecifier_type_list);
+ − 472 }
+ − 473
+ − 474 static Lisp_Object
+ − 475 make_specifier_internal (struct specifier_methods *spec_meths,
+ − 476 size_t data_size, int call_create_meth)
+ − 477 {
+ − 478 Lisp_Object specifier;
440
+ − 479 Lisp_Specifier *sp = (Lisp_Specifier *)
456
+ − 480 alloc_lcrecord (aligned_sizeof_specifier (data_size), &lrecord_specifier);
428
+ − 481
+ − 482 sp->methods = spec_meths;
+ − 483 sp->global_specs = Qnil;
+ − 484 sp->device_specs = Qnil;
+ − 485 sp->frame_specs = Qnil;
+ − 486 sp->window_specs = make_weak_list (WEAK_LIST_KEY_ASSOC);
+ − 487 sp->buffer_specs = Qnil;
+ − 488 sp->fallback = Qnil;
+ − 489 sp->magic_parent = Qnil;
+ − 490 sp->caching = 0;
+ − 491 sp->next_specifier = Vall_specifiers;
+ − 492
+ − 493 XSETSPECIFIER (specifier, sp);
+ − 494 Vall_specifiers = specifier;
+ − 495
+ − 496 if (call_create_meth)
+ − 497 {
+ − 498 struct gcpro gcpro1;
+ − 499 GCPRO1 (specifier);
+ − 500 MAYBE_SPECMETH (XSPECIFIER (specifier), create, (specifier));
+ − 501 UNGCPRO;
+ − 502 }
+ − 503 return specifier;
+ − 504 }
+ − 505
+ − 506 static Lisp_Object
+ − 507 make_specifier (struct specifier_methods *meths)
+ − 508 {
+ − 509 return make_specifier_internal (meths, meths->extra_data_size, 1);
+ − 510 }
+ − 511
+ − 512 Lisp_Object
+ − 513 make_magic_specifier (Lisp_Object type)
+ − 514 {
+ − 515 /* This function can GC */
+ − 516 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 517 Lisp_Object bodily, ghost;
+ − 518 struct gcpro gcpro1;
+ − 519
+ − 520 bodily = make_specifier (meths);
+ − 521 GCPRO1 (bodily);
+ − 522 ghost = make_specifier_internal (meths, 0, 0);
+ − 523 UNGCPRO;
+ − 524
+ − 525 /* Connect guys together */
+ − 526 XSPECIFIER(bodily)->magic_parent = Qt;
+ − 527 XSPECIFIER(bodily)->fallback = ghost;
+ − 528 XSPECIFIER(ghost)->magic_parent = bodily;
+ − 529
+ − 530 return bodily;
+ − 531 }
+ − 532
+ − 533 DEFUN ("make-specifier", Fmake_specifier, 1, 1, 0, /*
+ − 534 Return a new specifier object of type TYPE.
+ − 535
+ − 536 A specifier is an object that can be used to keep track of a property
+ − 537 whose value can be per-buffer, per-window, per-frame, or per-device,
442
+ − 538 and can further be restricted to a particular console-type or
+ − 539 device-class. Specifiers are used, for example, for the various
+ − 540 built-in properties of a face; this allows a face to have different
+ − 541 values in different frames, buffers, etc.
+ − 542
+ − 543 When speaking of the value of a specifier, it is important to
+ − 544 distinguish between the *setting* of a specifier, called an
+ − 545 \"instantiator\", and the *actual value*, called an \"instance\". You
+ − 546 put various possible instantiators (i.e. settings) into a specifier
+ − 547 and associate them with particular locales (buffer, window, frame,
+ − 548 device, global), and then the instance (i.e. actual value) is
+ − 549 retrieved in a specific domain (window, frame, device) by looking
+ − 550 through the possible instantiators (i.e. settings). This process is
+ − 551 called \"instantiation\".
444
+ − 552
442
+ − 553 To put settings into a specifier, use `set-specifier', or the
+ − 554 lower-level functions `add-spec-to-specifier' and
+ − 555 `add-spec-list-to-specifier'. You can also temporarily bind a setting
+ − 556 to a specifier using `let-specifier'. To retrieve settings, use
+ − 557 `specifier-specs', or its lower-level counterpart
+ − 558 `specifier-spec-list'. To determine the actual value, use
+ − 559 `specifier-instance'.
+ − 560
+ − 561 For more information, see `set-specifier', `specifier-instance',
428
+ − 562 `specifier-specs', and `add-spec-to-specifier'; or, for a detailed
442
+ − 563 description of specifiers, including how exactly the instantiation
+ − 564 process works, see the chapter on specifiers in the XEmacs Lisp
+ − 565 Reference Manual.
428
+ − 566
+ − 567 TYPE specifies the particular type of specifier, and should be one of
442
+ − 568 the symbols 'generic, 'integer, 'natnum, 'boolean, 'color, 'font,
+ − 569 'image, 'face-boolean, 'display-table, 'gutter, 'gutter-size,
+ − 570 'gutter-visible or 'toolbar.
+ − 571
+ − 572 For more information on particular types of specifiers, see the
+ − 573 functions `make-generic-specifier', `make-integer-specifier',
+ − 574 `make-natnum-specifier', `make-boolean-specifier',
+ − 575 `make-color-specifier', `make-font-specifier', `make-image-specifier',
+ − 576 `make-face-boolean-specifier', `make-gutter-size-specifier',
+ − 577 `make-gutter-visible-specifier', `default-toolbar', `default-gutter',
+ − 578 and `current-display-table'.
428
+ − 579 */
+ − 580 (type))
+ − 581 {
+ − 582 /* This function can GC */
442
+ − 583 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
428
+ − 584
+ − 585 return make_specifier (meths);
+ − 586 }
+ − 587
+ − 588 DEFUN ("specifierp", Fspecifierp, 1, 1, 0, /*
+ − 589 Return t if OBJECT is a specifier.
+ − 590
+ − 591 A specifier is an object that can be used to keep track of a property
+ − 592 whose value can be per-buffer, per-window, per-frame, or per-device,
+ − 593 and can further be restricted to a particular console-type or device-class.
+ − 594 See `make-specifier'.
+ − 595 */
+ − 596 (object))
+ − 597 {
+ − 598 return SPECIFIERP (object) ? Qt : Qnil;
+ − 599 }
+ − 600
+ − 601 DEFUN ("specifier-type", Fspecifier_type, 1, 1, 0, /*
+ − 602 Return the type of SPECIFIER.
+ − 603 */
+ − 604 (specifier))
+ − 605 {
+ − 606 CHECK_SPECIFIER (specifier);
+ − 607 return intern (XSPECIFIER (specifier)->methods->name);
+ − 608 }
+ − 609
+ − 610
+ − 611 /************************************************************************/
+ − 612 /* Locales and domains */
+ − 613 /************************************************************************/
+ − 614
+ − 615 DEFUN ("valid-specifier-locale-p", Fvalid_specifier_locale_p, 1, 1, 0, /*
+ − 616 Return t if LOCALE is a valid specifier locale.
+ − 617 Valid locales are devices, frames, windows, buffers, and 'global.
+ − 618 \(nil is not valid.)
+ − 619 */
+ − 620 (locale))
+ − 621 {
+ − 622 /* This cannot GC. */
+ − 623 return ((DEVICEP (locale) && DEVICE_LIVE_P (XDEVICE (locale))) ||
+ − 624 (FRAMEP (locale) && FRAME_LIVE_P (XFRAME (locale))) ||
+ − 625 (BUFFERP (locale) && BUFFER_LIVE_P (XBUFFER (locale))) ||
+ − 626 /* dead windows are allowed because they may become live
+ − 627 windows again when a window configuration is restored */
+ − 628 WINDOWP (locale) ||
+ − 629 EQ (locale, Qglobal))
+ − 630 ? Qt : Qnil;
+ − 631 }
+ − 632
+ − 633 DEFUN ("valid-specifier-domain-p", Fvalid_specifier_domain_p, 1, 1, 0, /*
+ − 634 Return t if DOMAIN is a valid specifier domain.
+ − 635 A domain is used to instance a specifier (i.e. determine the specifier's
442
+ − 636 value in that domain). Valid domains are image instances, windows, frames,
+ − 637 and devices. \(nil is not valid.) image instances are pseudo-domains since
+ − 638 instantiation will actually occur in the window the image instance itself is
+ − 639 instantiated in.
428
+ − 640 */
+ − 641 (domain))
+ − 642 {
+ − 643 /* This cannot GC. */
+ − 644 return ((DEVICEP (domain) && DEVICE_LIVE_P (XDEVICE (domain))) ||
+ − 645 (FRAMEP (domain) && FRAME_LIVE_P (XFRAME (domain))) ||
442
+ − 646 (WINDOWP (domain) && WINDOW_LIVE_P (XWINDOW (domain))) ||
+ − 647 /* #### get image instances out of domains! */
+ − 648 IMAGE_INSTANCEP (domain))
428
+ − 649 ? Qt : Qnil;
+ − 650 }
+ − 651
442
+ − 652 DEFUN ("valid-specifier-locale-type-p", Fvalid_specifier_locale_type_p, 1, 1, 0,
+ − 653 /*
428
+ − 654 Given a specifier LOCALE-TYPE, return non-nil if it is valid.
+ − 655 Valid locale types are 'global, 'device, 'frame, 'window, and 'buffer.
+ − 656 \(Note, however, that in functions that accept either a locale or a locale
+ − 657 type, 'global is considered an individual locale.)
+ − 658 */
+ − 659 (locale_type))
+ − 660 {
+ − 661 /* This cannot GC. */
+ − 662 return (EQ (locale_type, Qglobal) ||
+ − 663 EQ (locale_type, Qdevice) ||
+ − 664 EQ (locale_type, Qframe) ||
+ − 665 EQ (locale_type, Qwindow) ||
+ − 666 EQ (locale_type, Qbuffer)) ? Qt : Qnil;
+ − 667 }
+ − 668
+ − 669 static void
+ − 670 check_valid_locale_or_locale_type (Lisp_Object locale)
+ − 671 {
+ − 672 /* This cannot GC. */
+ − 673 if (EQ (locale, Qall) ||
+ − 674 !NILP (Fvalid_specifier_locale_p (locale)) ||
+ − 675 !NILP (Fvalid_specifier_locale_type_p (locale)))
+ − 676 return;
563
+ − 677 invalid_argument ("Invalid specifier locale or locale type", locale);
428
+ − 678 }
+ − 679
+ − 680 DEFUN ("specifier-locale-type-from-locale", Fspecifier_locale_type_from_locale,
+ − 681 1, 1, 0, /*
+ − 682 Given a specifier LOCALE, return its type.
+ − 683 */
+ − 684 (locale))
+ − 685 {
+ − 686 /* This cannot GC. */
+ − 687 if (NILP (Fvalid_specifier_locale_p (locale)))
563
+ − 688 invalid_argument ("Invalid specifier locale",
442
+ − 689 locale);
428
+ − 690 if (DEVICEP (locale)) return Qdevice;
+ − 691 if (FRAMEP (locale)) return Qframe;
+ − 692 if (WINDOWP (locale)) return Qwindow;
+ − 693 if (BUFFERP (locale)) return Qbuffer;
+ − 694 assert (EQ (locale, Qglobal));
+ − 695 return Qglobal;
+ − 696 }
+ − 697
+ − 698 static Lisp_Object
+ − 699 decode_locale (Lisp_Object locale)
+ − 700 {
+ − 701 /* This cannot GC. */
+ − 702 if (NILP (locale))
+ − 703 return Qglobal;
+ − 704 else if (!NILP (Fvalid_specifier_locale_p (locale)))
+ − 705 return locale;
+ − 706 else
563
+ − 707 invalid_argument ("Invalid specifier locale",
442
+ − 708 locale);
428
+ − 709
+ − 710 return Qnil;
+ − 711 }
+ − 712
+ − 713 static enum spec_locale_type
+ − 714 decode_locale_type (Lisp_Object locale_type)
+ − 715 {
+ − 716 /* This cannot GC. */
+ − 717 if (EQ (locale_type, Qglobal)) return LOCALE_GLOBAL;
+ − 718 if (EQ (locale_type, Qdevice)) return LOCALE_DEVICE;
+ − 719 if (EQ (locale_type, Qframe)) return LOCALE_FRAME;
+ − 720 if (EQ (locale_type, Qwindow)) return LOCALE_WINDOW;
+ − 721 if (EQ (locale_type, Qbuffer)) return LOCALE_BUFFER;
+ − 722
563
+ − 723 invalid_argument ("Invalid specifier locale type",
442
+ − 724 locale_type);
428
+ − 725 return LOCALE_GLOBAL; /* not reached */
+ − 726 }
+ − 727
+ − 728 Lisp_Object
+ − 729 decode_locale_list (Lisp_Object locale)
+ − 730 {
+ − 731 /* This cannot GC. */
+ − 732 /* The return value of this function must be GCPRO'd. */
+ − 733 if (NILP (locale))
+ − 734 {
+ − 735 return list1 (Qall);
+ − 736 }
+ − 737 else if (CONSP (locale))
+ − 738 {
+ − 739 EXTERNAL_LIST_LOOP_2 (elt, locale)
+ − 740 check_valid_locale_or_locale_type (elt);
+ − 741 return locale;
+ − 742 }
+ − 743 else
+ − 744 {
+ − 745 check_valid_locale_or_locale_type (locale);
+ − 746 return list1 (locale);
+ − 747 }
+ − 748 }
+ − 749
+ − 750 static enum spec_locale_type
+ − 751 locale_type_from_locale (Lisp_Object locale)
+ − 752 {
+ − 753 return decode_locale_type (Fspecifier_locale_type_from_locale (locale));
+ − 754 }
+ − 755
+ − 756 static void
+ − 757 check_valid_domain (Lisp_Object domain)
+ − 758 {
+ − 759 if (NILP (Fvalid_specifier_domain_p (domain)))
563
+ − 760 invalid_argument ("Invalid specifier domain",
442
+ − 761 domain);
428
+ − 762 }
+ − 763
442
+ − 764 Lisp_Object
428
+ − 765 decode_domain (Lisp_Object domain)
+ − 766 {
+ − 767 if (NILP (domain))
+ − 768 return Fselected_window (Qnil);
+ − 769 check_valid_domain (domain);
+ − 770 return domain;
+ − 771 }
+ − 772
+ − 773
+ − 774 /************************************************************************/
+ − 775 /* Tags */
+ − 776 /************************************************************************/
+ − 777
+ − 778 DEFUN ("valid-specifier-tag-p", Fvalid_specifier_tag_p, 1, 1, 0, /*
+ − 779 Return non-nil if TAG is a valid specifier tag.
+ − 780 See also `valid-specifier-tag-set-p'.
+ − 781 */
+ − 782 (tag))
+ − 783 {
+ − 784 return (valid_console_type_p (tag) ||
+ − 785 valid_device_class_p (tag) ||
+ − 786 !NILP (assq_no_quit (tag, Vuser_defined_tags))) ? Qt : Qnil;
+ − 787 }
+ − 788
+ − 789 DEFUN ("valid-specifier-tag-set-p", Fvalid_specifier_tag_set_p, 1, 1, 0, /*
+ − 790 Return non-nil if TAG-SET is a valid specifier tag set.
+ − 791
+ − 792 A specifier tag set is an entity that is attached to an instantiator
+ − 793 and can be used to restrict the scope of that instantiator to a
+ − 794 particular device class or device type and/or to mark instantiators
+ − 795 added by a particular package so that they can be later removed.
+ − 796
+ − 797 A specifier tag set consists of a list of zero of more specifier tags,
+ − 798 each of which is a symbol that is recognized by XEmacs as a tag.
+ − 799 \(The valid device types and device classes are always tags, as are
+ − 800 any tags defined by `define-specifier-tag'.) It is called a "tag set"
+ − 801 \(as opposed to a list) because the order of the tags or the number of
+ − 802 times a particular tag occurs does not matter.
+ − 803
+ − 804 Each tag has a predicate associated with it, which specifies whether
+ − 805 that tag applies to a particular device. The tags which are device types
+ − 806 and classes match devices of that type or class. User-defined tags can
+ − 807 have any predicate, or none (meaning that all devices match). When
+ − 808 attempting to instance a specifier, a particular instantiator is only
+ − 809 considered if the device of the domain being instanced over matches
+ − 810 all tags in the tag set attached to that instantiator.
+ − 811
+ − 812 Most of the time, a tag set is not specified, and the instantiator
+ − 813 gets a null tag set, which matches all devices.
+ − 814 */
+ − 815 (tag_set))
+ − 816 {
+ − 817 Lisp_Object rest;
+ − 818
+ − 819 for (rest = tag_set; !NILP (rest); rest = XCDR (rest))
+ − 820 {
+ − 821 if (!CONSP (rest))
+ − 822 return Qnil;
+ − 823 if (NILP (Fvalid_specifier_tag_p (XCAR (rest))))
+ − 824 return Qnil;
+ − 825 QUIT;
+ − 826 }
+ − 827 return Qt;
+ − 828 }
+ − 829
+ − 830 Lisp_Object
+ − 831 decode_specifier_tag_set (Lisp_Object tag_set)
+ − 832 {
+ − 833 /* The return value of this function must be GCPRO'd. */
+ − 834 if (!NILP (Fvalid_specifier_tag_p (tag_set)))
+ − 835 return list1 (tag_set);
+ − 836 if (NILP (Fvalid_specifier_tag_set_p (tag_set)))
563
+ − 837 invalid_argument ("Invalid specifier tag-set",
442
+ − 838 tag_set);
428
+ − 839 return tag_set;
+ − 840 }
+ − 841
+ − 842 static Lisp_Object
+ − 843 canonicalize_tag_set (Lisp_Object tag_set)
+ − 844 {
+ − 845 int len = XINT (Flength (tag_set));
+ − 846 Lisp_Object *tags, rest;
+ − 847 int i, j;
+ − 848
+ − 849 /* We assume in this function that the tag_set has already been
+ − 850 validated, so there are no surprises. */
+ − 851
+ − 852 if (len == 0 || len == 1)
+ − 853 /* most common case */
+ − 854 return tag_set;
+ − 855
+ − 856 tags = alloca_array (Lisp_Object, len);
+ − 857
+ − 858 i = 0;
+ − 859 LIST_LOOP (rest, tag_set)
+ − 860 tags[i++] = XCAR (rest);
+ − 861
+ − 862 /* Sort the list of tags. We use a bubble sort here (copied from
+ − 863 extent_fragment_update()) -- reduces the function call overhead,
+ − 864 and is the fastest sort for small numbers of items. */
+ − 865
+ − 866 for (i = 1; i < len; i++)
+ − 867 {
+ − 868 j = i - 1;
+ − 869 while (j >= 0 &&
+ − 870 strcmp ((char *) string_data (XSYMBOL (tags[j])->name),
+ − 871 (char *) string_data (XSYMBOL (tags[j+1])->name)) > 0)
+ − 872 {
+ − 873 Lisp_Object tmp = tags[j];
+ − 874 tags[j] = tags[j+1];
+ − 875 tags[j+1] = tmp;
+ − 876 j--;
+ − 877 }
+ − 878 }
+ − 879
+ − 880 /* Now eliminate duplicates. */
+ − 881
+ − 882 for (i = 1, j = 1; i < len; i++)
+ − 883 {
+ − 884 /* j holds the destination, i the source. */
+ − 885 if (!EQ (tags[i], tags[i-1]))
+ − 886 tags[j++] = tags[i];
+ − 887 }
+ − 888
+ − 889 return Flist (j, tags);
+ − 890 }
+ − 891
+ − 892 DEFUN ("canonicalize-tag-set", Fcanonicalize_tag_set, 1, 1, 0, /*
+ − 893 Canonicalize the given tag set.
+ − 894 Two canonicalized tag sets can be compared with `equal' to see if they
+ − 895 represent the same tag set. (Specifically, canonicalizing involves
+ − 896 sorting by symbol name and removing duplicates.)
+ − 897 */
+ − 898 (tag_set))
+ − 899 {
+ − 900 if (NILP (Fvalid_specifier_tag_set_p (tag_set)))
563
+ − 901 invalid_argument ("Invalid tag set", tag_set);
428
+ − 902 return canonicalize_tag_set (tag_set);
+ − 903 }
+ − 904
+ − 905 static int
+ − 906 device_matches_specifier_tag_set_p (Lisp_Object device, Lisp_Object tag_set)
+ − 907 {
+ − 908 Lisp_Object devtype, devclass, rest;
+ − 909 struct device *d = XDEVICE (device);
+ − 910
+ − 911 devtype = DEVICE_TYPE (d);
+ − 912 devclass = DEVICE_CLASS (d);
+ − 913
+ − 914 LIST_LOOP (rest, tag_set)
+ − 915 {
+ − 916 Lisp_Object tag = XCAR (rest);
+ − 917 Lisp_Object assoc;
+ − 918
+ − 919 if (EQ (tag, devtype) || EQ (tag, devclass))
+ − 920 continue;
+ − 921 assoc = assq_no_quit (tag, DEVICE_USER_DEFINED_TAGS (d));
+ − 922 /* other built-in tags (device types/classes) are not in
+ − 923 the user-defined-tags list. */
+ − 924 if (NILP (assoc) || NILP (XCDR (assoc)))
+ − 925 return 0;
+ − 926 }
+ − 927
+ − 928 return 1;
+ − 929 }
+ − 930
442
+ − 931 DEFUN ("device-matches-specifier-tag-set-p",
+ − 932 Fdevice_matches_specifier_tag_set_p, 2, 2, 0, /*
428
+ − 933 Return non-nil if DEVICE matches specifier tag set TAG-SET.
+ − 934 This means that DEVICE matches each tag in the tag set. (Every
+ − 935 tag recognized by XEmacs has a predicate associated with it that
+ − 936 specifies which devices match it.)
+ − 937 */
+ − 938 (device, tag_set))
+ − 939 {
+ − 940 CHECK_LIVE_DEVICE (device);
+ − 941
+ − 942 if (NILP (Fvalid_specifier_tag_set_p (tag_set)))
563
+ − 943 invalid_argument ("Invalid tag set", tag_set);
428
+ − 944
+ − 945 return device_matches_specifier_tag_set_p (device, tag_set) ? Qt : Qnil;
+ − 946 }
+ − 947
+ − 948 DEFUN ("define-specifier-tag", Fdefine_specifier_tag, 1, 2, 0, /*
+ − 949 Define a new specifier tag.
+ − 950 If PREDICATE is specified, it should be a function of one argument
+ − 951 \(a device) that specifies whether the tag matches that particular
+ − 952 device. If PREDICATE is omitted, the tag matches all devices.
+ − 953
+ − 954 You can redefine an existing user-defined specifier tag. However,
+ − 955 you cannot redefine the built-in specifier tags (the device types
+ − 956 and classes) or the symbols nil, t, 'all, or 'global.
+ − 957 */
+ − 958 (tag, predicate))
+ − 959 {
+ − 960 Lisp_Object assoc, devcons, concons;
+ − 961 int recompute = 0;
+ − 962
+ − 963 CHECK_SYMBOL (tag);
+ − 964 if (valid_device_class_p (tag) ||
+ − 965 valid_console_type_p (tag))
563
+ − 966 invalid_change ("Cannot redefine built-in specifier tags", tag);
428
+ − 967 /* Try to prevent common instantiators and locales from being
+ − 968 redefined, to reduce ambiguity */
+ − 969 if (NILP (tag) || EQ (tag, Qt) || EQ (tag, Qall) || EQ (tag, Qglobal))
563
+ − 970 invalid_change ("Cannot define nil, t, 'all, or 'global", tag);
428
+ − 971 assoc = assq_no_quit (tag, Vuser_defined_tags);
+ − 972 if (NILP (assoc))
+ − 973 {
+ − 974 recompute = 1;
+ − 975 Vuser_defined_tags = Fcons (Fcons (tag, predicate), Vuser_defined_tags);
+ − 976 DEVICE_LOOP_NO_BREAK (devcons, concons)
+ − 977 {
+ − 978 struct device *d = XDEVICE (XCAR (devcons));
+ − 979 /* Initially set the value to t in case of error
+ − 980 in predicate */
+ − 981 DEVICE_USER_DEFINED_TAGS (d) =
+ − 982 Fcons (Fcons (tag, Qt), DEVICE_USER_DEFINED_TAGS (d));
+ − 983 }
+ − 984 }
+ − 985 else if (!NILP (predicate) && !NILP (XCDR (assoc)))
+ − 986 {
+ − 987 recompute = 1;
+ − 988 XCDR (assoc) = predicate;
+ − 989 }
+ − 990
+ − 991 /* recompute the tag values for all devices. However, in the special
+ − 992 case where both the old and new predicates are nil, we know that
+ − 993 we don't have to do this. (It's probably common for people to
+ − 994 call (define-specifier-tag) more than once on the same tag,
+ − 995 and the most common case is where PREDICATE is not specified.) */
+ − 996
+ − 997 if (recompute)
+ − 998 {
+ − 999 DEVICE_LOOP_NO_BREAK (devcons, concons)
+ − 1000 {
+ − 1001 Lisp_Object device = XCAR (devcons);
+ − 1002 assoc = assq_no_quit (tag,
+ − 1003 DEVICE_USER_DEFINED_TAGS (XDEVICE (device)));
+ − 1004 assert (CONSP (assoc));
+ − 1005 if (NILP (predicate))
+ − 1006 XCDR (assoc) = Qt;
+ − 1007 else
+ − 1008 XCDR (assoc) = !NILP (call1 (predicate, device)) ? Qt : Qnil;
+ − 1009 }
+ − 1010 }
+ − 1011
+ − 1012 return Qnil;
+ − 1013 }
+ − 1014
+ − 1015 /* Called at device-creation time to initialize the user-defined
+ − 1016 tag values for the newly-created device. */
+ − 1017
+ − 1018 void
+ − 1019 setup_device_initial_specifier_tags (struct device *d)
+ − 1020 {
+ − 1021 Lisp_Object rest, rest2;
+ − 1022 Lisp_Object device;
+ − 1023
+ − 1024 XSETDEVICE (device, d);
+ − 1025
+ − 1026 DEVICE_USER_DEFINED_TAGS (d) = Fcopy_alist (Vuser_defined_tags);
+ − 1027
+ − 1028 /* Now set up the initial values */
+ − 1029 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d))
+ − 1030 XCDR (XCAR (rest)) = Qt;
+ − 1031
+ − 1032 for (rest = Vuser_defined_tags, rest2 = DEVICE_USER_DEFINED_TAGS (d);
+ − 1033 !NILP (rest); rest = XCDR (rest), rest2 = XCDR (rest2))
+ − 1034 {
+ − 1035 Lisp_Object predicate = XCDR (XCAR (rest));
+ − 1036 if (NILP (predicate))
+ − 1037 XCDR (XCAR (rest2)) = Qt;
+ − 1038 else
+ − 1039 XCDR (XCAR (rest2)) = !NILP (call1 (predicate, device)) ? Qt : Qnil;
+ − 1040 }
+ − 1041 }
+ − 1042
442
+ − 1043 DEFUN ("device-matching-specifier-tag-list",
+ − 1044 Fdevice_matching_specifier_tag_list,
428
+ − 1045 0, 1, 0, /*
+ − 1046 Return a list of all specifier tags matching DEVICE.
+ − 1047 DEVICE defaults to the selected device if omitted.
+ − 1048 */
+ − 1049 (device))
+ − 1050 {
+ − 1051 struct device *d = decode_device (device);
+ − 1052 Lisp_Object rest, list = Qnil;
+ − 1053 struct gcpro gcpro1;
+ − 1054
+ − 1055 GCPRO1 (list);
+ − 1056
+ − 1057 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d))
+ − 1058 {
+ − 1059 if (!NILP (XCDR (XCAR (rest))))
+ − 1060 list = Fcons (XCAR (XCAR (rest)), list);
+ − 1061 }
+ − 1062
+ − 1063 list = Fnreverse (list);
+ − 1064 list = Fcons (DEVICE_CLASS (d), list);
+ − 1065 list = Fcons (DEVICE_TYPE (d), list);
+ − 1066
+ − 1067 RETURN_UNGCPRO (list);
+ − 1068 }
+ − 1069
+ − 1070 DEFUN ("specifier-tag-list", Fspecifier_tag_list, 0, 0, 0, /*
+ − 1071 Return a list of all currently-defined specifier tags.
+ − 1072 This includes the built-in ones (the device types and classes).
+ − 1073 */
+ − 1074 ())
+ − 1075 {
+ − 1076 Lisp_Object list = Qnil, rest;
+ − 1077 struct gcpro gcpro1;
+ − 1078
+ − 1079 GCPRO1 (list);
+ − 1080
+ − 1081 LIST_LOOP (rest, Vuser_defined_tags)
+ − 1082 list = Fcons (XCAR (XCAR (rest)), list);
+ − 1083
+ − 1084 list = Fnreverse (list);
+ − 1085 list = nconc2 (Fcopy_sequence (Vdevice_class_list), list);
+ − 1086 list = nconc2 (Fcopy_sequence (Vconsole_type_list), list);
+ − 1087
+ − 1088 RETURN_UNGCPRO (list);
+ − 1089 }
+ − 1090
+ − 1091 DEFUN ("specifier-tag-predicate", Fspecifier_tag_predicate, 1, 1, 0, /*
+ − 1092 Return the predicate for the given specifier tag.
+ − 1093 */
+ − 1094 (tag))
+ − 1095 {
+ − 1096 /* The return value of this function must be GCPRO'd. */
+ − 1097 CHECK_SYMBOL (tag);
+ − 1098
+ − 1099 if (NILP (Fvalid_specifier_tag_p (tag)))
563
+ − 1100 invalid_argument ("Invalid specifier tag",
442
+ − 1101 tag);
428
+ − 1102
+ − 1103 /* Make up some predicates for the built-in types */
+ − 1104
+ − 1105 if (valid_console_type_p (tag))
+ − 1106 return list3 (Qlambda, list1 (Qdevice),
+ − 1107 list3 (Qeq, list2 (Qquote, tag),
+ − 1108 list2 (Qconsole_type, Qdevice)));
+ − 1109
+ − 1110 if (valid_device_class_p (tag))
+ − 1111 return list3 (Qlambda, list1 (Qdevice),
+ − 1112 list3 (Qeq, list2 (Qquote, tag),
+ − 1113 list2 (Qdevice_class, Qdevice)));
+ − 1114
+ − 1115 return XCDR (assq_no_quit (tag, Vuser_defined_tags));
+ − 1116 }
+ − 1117
+ − 1118 /* Return true if A "matches" B. If EXACT_P is 0, A must be a subset of B.
+ − 1119 Otherwise, A must be `equal' to B. The sets must be canonicalized. */
+ − 1120 static int
+ − 1121 tag_sets_match_p (Lisp_Object a, Lisp_Object b, int exact_p)
+ − 1122 {
+ − 1123 if (!exact_p)
+ − 1124 {
+ − 1125 while (!NILP (a) && !NILP (b))
+ − 1126 {
+ − 1127 if (EQ (XCAR (a), XCAR (b)))
+ − 1128 a = XCDR (a);
+ − 1129 b = XCDR (b);
+ − 1130 }
+ − 1131
+ − 1132 return NILP (a);
+ − 1133 }
+ − 1134 else
+ − 1135 {
+ − 1136 while (!NILP (a) && !NILP (b))
+ − 1137 {
+ − 1138 if (!EQ (XCAR (a), XCAR (b)))
+ − 1139 return 0;
+ − 1140 a = XCDR (a);
+ − 1141 b = XCDR (b);
+ − 1142 }
+ − 1143
+ − 1144 return NILP (a) && NILP (b);
+ − 1145 }
+ − 1146 }
+ − 1147
+ − 1148
+ − 1149 /************************************************************************/
+ − 1150 /* Spec-lists and inst-lists */
+ − 1151 /************************************************************************/
+ − 1152
+ − 1153 static Lisp_Object
+ − 1154 call_validate_method (Lisp_Object boxed_method, Lisp_Object instantiator)
+ − 1155 {
+ − 1156 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (instantiator);
+ − 1157 return Qt;
+ − 1158 }
+ − 1159
+ − 1160 static Lisp_Object
+ − 1161 check_valid_instantiator (Lisp_Object instantiator,
+ − 1162 struct specifier_methods *meths,
578
+ − 1163 Error_Behavior errb)
428
+ − 1164 {
+ − 1165 if (meths->validate_method)
+ − 1166 {
+ − 1167 Lisp_Object retval;
+ − 1168
+ − 1169 if (ERRB_EQ (errb, ERROR_ME))
+ − 1170 {
+ − 1171 (meths->validate_method) (instantiator);
+ − 1172 retval = Qt;
+ − 1173 }
+ − 1174 else
+ − 1175 {
+ − 1176 Lisp_Object opaque = make_opaque_ptr ((void *)
+ − 1177 meths->validate_method);
+ − 1178 struct gcpro gcpro1;
+ − 1179
+ − 1180 GCPRO1 (opaque);
+ − 1181 retval = call_with_suspended_errors
+ − 1182 ((lisp_fn_t) call_validate_method,
+ − 1183 Qnil, Qspecifier, errb, 2, opaque, instantiator);
+ − 1184
+ − 1185 free_opaque_ptr (opaque);
+ − 1186 UNGCPRO;
+ − 1187 }
+ − 1188
+ − 1189 return retval;
+ − 1190 }
+ − 1191 return Qt;
+ − 1192 }
+ − 1193
+ − 1194 DEFUN ("check-valid-instantiator", Fcheck_valid_instantiator, 2, 2, 0, /*
+ − 1195 Signal an error if INSTANTIATOR is invalid for SPECIFIER-TYPE.
+ − 1196 */
+ − 1197 (instantiator, specifier_type))
+ − 1198 {
+ − 1199 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 1200 ERROR_ME);
+ − 1201
+ − 1202 return check_valid_instantiator (instantiator, meths, ERROR_ME);
+ − 1203 }
+ − 1204
+ − 1205 DEFUN ("valid-instantiator-p", Fvalid_instantiator_p, 2, 2, 0, /*
+ − 1206 Return non-nil if INSTANTIATOR is valid for SPECIFIER-TYPE.
+ − 1207 */
+ − 1208 (instantiator, specifier_type))
+ − 1209 {
+ − 1210 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 1211 ERROR_ME);
+ − 1212
+ − 1213 return check_valid_instantiator (instantiator, meths, ERROR_ME_NOT);
+ − 1214 }
+ − 1215
+ − 1216 static Lisp_Object
+ − 1217 check_valid_inst_list (Lisp_Object inst_list, struct specifier_methods *meths,
578
+ − 1218 Error_Behavior errb)
428
+ − 1219 {
+ − 1220 Lisp_Object rest;
+ − 1221
+ − 1222 LIST_LOOP (rest, inst_list)
+ − 1223 {
+ − 1224 Lisp_Object inst_pair, tag_set;
+ − 1225
+ − 1226 if (!CONSP (rest))
+ − 1227 {
563
+ − 1228 maybe_sferror (
442
+ − 1229 "Invalid instantiator list", inst_list,
428
+ − 1230 Qspecifier, errb);
+ − 1231 return Qnil;
+ − 1232 }
+ − 1233 if (!CONSP (inst_pair = XCAR (rest)))
+ − 1234 {
563
+ − 1235 maybe_sferror (
442
+ − 1236 "Invalid instantiator pair", inst_pair,
428
+ − 1237 Qspecifier, errb);
+ − 1238 return Qnil;
+ − 1239 }
+ − 1240 if (NILP (Fvalid_specifier_tag_set_p (tag_set = XCAR (inst_pair))))
+ − 1241 {
563
+ − 1242 maybe_invalid_argument (
442
+ − 1243 "Invalid specifier tag", tag_set,
428
+ − 1244 Qspecifier, errb);
+ − 1245 return Qnil;
+ − 1246 }
+ − 1247
+ − 1248 if (NILP (check_valid_instantiator (XCDR (inst_pair), meths, errb)))
+ − 1249 return Qnil;
+ − 1250 }
+ − 1251
+ − 1252 return Qt;
+ − 1253 }
+ − 1254
+ − 1255 DEFUN ("check-valid-inst-list", Fcheck_valid_inst_list, 2, 2, 0, /*
+ − 1256 Signal an error if INST-LIST is invalid for specifier type TYPE.
+ − 1257 */
+ − 1258 (inst_list, type))
+ − 1259 {
+ − 1260 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1261
+ − 1262 return check_valid_inst_list (inst_list, meths, ERROR_ME);
+ − 1263 }
+ − 1264
+ − 1265 DEFUN ("valid-inst-list-p", Fvalid_inst_list_p, 2, 2, 0, /*
+ − 1266 Return non-nil if INST-LIST is valid for specifier type TYPE.
+ − 1267 */
+ − 1268 (inst_list, type))
+ − 1269 {
+ − 1270 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1271
+ − 1272 return check_valid_inst_list (inst_list, meths, ERROR_ME_NOT);
+ − 1273 }
+ − 1274
+ − 1275 static Lisp_Object
+ − 1276 check_valid_spec_list (Lisp_Object spec_list, struct specifier_methods *meths,
578
+ − 1277 Error_Behavior errb)
428
+ − 1278 {
+ − 1279 Lisp_Object rest;
+ − 1280
+ − 1281 LIST_LOOP (rest, spec_list)
+ − 1282 {
+ − 1283 Lisp_Object spec, locale;
+ − 1284 if (!CONSP (rest) || !CONSP (spec = XCAR (rest)))
+ − 1285 {
563
+ − 1286 maybe_sferror (
442
+ − 1287 "Invalid specification list", spec_list,
428
+ − 1288 Qspecifier, errb);
+ − 1289 return Qnil;
+ − 1290 }
+ − 1291 if (NILP (Fvalid_specifier_locale_p (locale = XCAR (spec))))
+ − 1292 {
563
+ − 1293 maybe_invalid_argument (
442
+ − 1294 "Invalid specifier locale", locale,
428
+ − 1295 Qspecifier, errb);
+ − 1296 return Qnil;
+ − 1297 }
+ − 1298
+ − 1299 if (NILP (check_valid_inst_list (XCDR (spec), meths, errb)))
+ − 1300 return Qnil;
+ − 1301 }
+ − 1302
+ − 1303 return Qt;
+ − 1304 }
+ − 1305
+ − 1306 DEFUN ("check-valid-spec-list", Fcheck_valid_spec_list, 2, 2, 0, /*
+ − 1307 Signal an error if SPEC-LIST is invalid for specifier type TYPE.
+ − 1308 */
+ − 1309 (spec_list, type))
+ − 1310 {
+ − 1311 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1312
+ − 1313 return check_valid_spec_list (spec_list, meths, ERROR_ME);
+ − 1314 }
+ − 1315
+ − 1316 DEFUN ("valid-spec-list-p", Fvalid_spec_list_p, 2, 2, 0, /*
+ − 1317 Return non-nil if SPEC-LIST is valid for specifier type TYPE.
+ − 1318 */
+ − 1319 (spec_list, type))
+ − 1320 {
+ − 1321 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1322
+ − 1323 return check_valid_spec_list (spec_list, meths, ERROR_ME_NOT);
+ − 1324 }
+ − 1325
+ − 1326 enum spec_add_meth
+ − 1327 decode_how_to_add_specification (Lisp_Object how_to_add)
+ − 1328 {
+ − 1329 if (NILP (how_to_add) || EQ (Qremove_tag_set_prepend, how_to_add))
+ − 1330 return SPEC_REMOVE_TAG_SET_PREPEND;
+ − 1331 if (EQ (Qremove_tag_set_append, how_to_add))
+ − 1332 return SPEC_REMOVE_TAG_SET_APPEND;
+ − 1333 if (EQ (Qappend, how_to_add))
+ − 1334 return SPEC_APPEND;
+ − 1335 if (EQ (Qprepend, how_to_add))
+ − 1336 return SPEC_PREPEND;
+ − 1337 if (EQ (Qremove_locale, how_to_add))
+ − 1338 return SPEC_REMOVE_LOCALE;
+ − 1339 if (EQ (Qremove_locale_type, how_to_add))
+ − 1340 return SPEC_REMOVE_LOCALE_TYPE;
+ − 1341 if (EQ (Qremove_all, how_to_add))
+ − 1342 return SPEC_REMOVE_ALL;
+ − 1343
563
+ − 1344 invalid_constant ("Invalid `how-to-add' flag", how_to_add);
428
+ − 1345
+ − 1346 return SPEC_PREPEND; /* not reached */
+ − 1347 }
+ − 1348
+ − 1349 /* Given a specifier object SPEC, return bodily specifier if SPEC is a
+ − 1350 ghost specifier, otherwise return the object itself
+ − 1351 */
+ − 1352 static Lisp_Object
+ − 1353 bodily_specifier (Lisp_Object spec)
+ − 1354 {
+ − 1355 return (GHOST_SPECIFIER_P (XSPECIFIER (spec))
+ − 1356 ? XSPECIFIER(spec)->magic_parent : spec);
+ − 1357 }
+ − 1358
+ − 1359 /* Signal error if (specifier SPEC is read-only.
+ − 1360 Read only are ghost specifiers unless Vunlock_ghost_specifiers is
+ − 1361 non-nil. All other specifiers are read-write.
+ − 1362 */
+ − 1363 static void
+ − 1364 check_modifiable_specifier (Lisp_Object spec)
+ − 1365 {
+ − 1366 if (NILP (Vunlock_ghost_specifiers)
+ − 1367 && GHOST_SPECIFIER_P (XSPECIFIER (spec)))
563
+ − 1368 signal_error (Qsetting_constant,
+ − 1369 "Attempt to modify read-only specifier",
+ − 1370 spec);
428
+ − 1371 }
+ − 1372
+ − 1373 /* Helper function which unwind protects the value of
+ − 1374 Vunlock_ghost_specifiers, then sets it to non-nil value */
+ − 1375 static Lisp_Object
+ − 1376 restore_unlock_value (Lisp_Object val)
+ − 1377 {
+ − 1378 Vunlock_ghost_specifiers = val;
+ − 1379 return val;
+ − 1380 }
+ − 1381
+ − 1382 int
+ − 1383 unlock_ghost_specifiers_protected (void)
+ − 1384 {
+ − 1385 int depth = specpdl_depth ();
+ − 1386 record_unwind_protect (restore_unlock_value,
+ − 1387 Vunlock_ghost_specifiers);
+ − 1388 Vunlock_ghost_specifiers = Qt;
+ − 1389 return depth;
+ − 1390 }
+ − 1391
+ − 1392 /* This gets hit so much that the function call overhead had a
+ − 1393 measurable impact (according to Quantify). #### We should figure
+ − 1394 out the frequency with which this is called with the various types
+ − 1395 and reorder the check accordingly. */
+ − 1396 #define SPECIFIER_GET_SPEC_LIST(specifier, type) \
+ − 1397 (type == LOCALE_GLOBAL ? &(XSPECIFIER (specifier)->global_specs) : \
+ − 1398 type == LOCALE_DEVICE ? &(XSPECIFIER (specifier)->device_specs) : \
+ − 1399 type == LOCALE_FRAME ? &(XSPECIFIER (specifier)->frame_specs) : \
+ − 1400 type == LOCALE_WINDOW ? &(XWEAK_LIST_LIST \
+ − 1401 (XSPECIFIER (specifier)->window_specs)) : \
+ − 1402 type == LOCALE_BUFFER ? &(XSPECIFIER (specifier)->buffer_specs) : \
+ − 1403 0)
+ − 1404
+ − 1405 static Lisp_Object *
+ − 1406 specifier_get_inst_list (Lisp_Object specifier, Lisp_Object locale,
+ − 1407 enum spec_locale_type type)
+ − 1408 {
+ − 1409 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1410 Lisp_Object specification;
+ − 1411
+ − 1412 if (type == LOCALE_GLOBAL)
+ − 1413 return spec_list;
+ − 1414 /* Calling assq_no_quit when it is just going to return nil anyhow
+ − 1415 is extremely expensive. So sayeth Quantify. */
+ − 1416 if (!CONSP (*spec_list))
+ − 1417 return 0;
+ − 1418 specification = assq_no_quit (locale, *spec_list);
+ − 1419 if (NILP (specification))
+ − 1420 return 0;
+ − 1421 return &XCDR (specification);
+ − 1422 }
+ − 1423
+ − 1424 /* For the given INST_LIST, return a new INST_LIST containing all elements
+ − 1425 where TAG-SET matches the element's tag set. EXACT_P indicates whether
+ − 1426 the match must be exact (as opposed to a subset). SHORT_P indicates
+ − 1427 that the short form (for `specifier-specs') should be returned if
+ − 1428 possible. If COPY_TREE_P, `copy-tree' is used to ensure that no
+ − 1429 elements of the new list are shared with the initial list.
+ − 1430 */
+ − 1431
+ − 1432 static Lisp_Object
+ − 1433 specifier_process_inst_list (Lisp_Object inst_list,
+ − 1434 Lisp_Object tag_set, int exact_p,
+ − 1435 int short_p, int copy_tree_p)
+ − 1436 {
+ − 1437 Lisp_Object retval = Qnil;
+ − 1438 Lisp_Object rest;
+ − 1439 struct gcpro gcpro1;
+ − 1440
+ − 1441 GCPRO1 (retval);
+ − 1442 LIST_LOOP (rest, inst_list)
+ − 1443 {
+ − 1444 Lisp_Object tagged_inst = XCAR (rest);
+ − 1445 Lisp_Object tagged_inst_tag = XCAR (tagged_inst);
+ − 1446 if (tag_sets_match_p (tag_set, tagged_inst_tag, exact_p))
+ − 1447 {
+ − 1448 if (short_p && NILP (tagged_inst_tag))
+ − 1449 retval = Fcons (copy_tree_p ?
+ − 1450 Fcopy_tree (XCDR (tagged_inst), Qt) :
+ − 1451 XCDR (tagged_inst),
+ − 1452 retval);
+ − 1453 else
+ − 1454 retval = Fcons (copy_tree_p ? Fcopy_tree (tagged_inst, Qt) :
+ − 1455 tagged_inst, retval);
+ − 1456 }
+ − 1457 }
+ − 1458 retval = Fnreverse (retval);
+ − 1459 UNGCPRO;
+ − 1460 /* If there is a single instantiator and the short form is
+ − 1461 requested, return just the instantiator (rather than a one-element
+ − 1462 list of it) unless it is nil (so that it can be distinguished from
+ − 1463 no instantiators at all). */
+ − 1464 if (short_p && CONSP (retval) && !NILP (XCAR (retval)) &&
+ − 1465 NILP (XCDR (retval)))
+ − 1466 return XCAR (retval);
+ − 1467 else
+ − 1468 return retval;
+ − 1469 }
+ − 1470
+ − 1471 static Lisp_Object
+ − 1472 specifier_get_external_inst_list (Lisp_Object specifier, Lisp_Object locale,
+ − 1473 enum spec_locale_type type,
+ − 1474 Lisp_Object tag_set, int exact_p,
+ − 1475 int short_p, int copy_tree_p)
+ − 1476 {
+ − 1477 Lisp_Object *inst_list = specifier_get_inst_list (specifier, locale,
+ − 1478 type);
+ − 1479 if (!inst_list || NILP (*inst_list))
+ − 1480 {
+ − 1481 /* nil for *inst_list should only occur in 'global */
+ − 1482 assert (!inst_list || EQ (locale, Qglobal));
+ − 1483 return Qnil;
+ − 1484 }
+ − 1485
+ − 1486 return specifier_process_inst_list (*inst_list, tag_set, exact_p,
+ − 1487 short_p, copy_tree_p);
+ − 1488 }
+ − 1489
+ − 1490 static Lisp_Object
+ − 1491 specifier_get_external_spec_list (Lisp_Object specifier,
+ − 1492 enum spec_locale_type type,
+ − 1493 Lisp_Object tag_set, int exact_p)
+ − 1494 {
+ − 1495 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1496 Lisp_Object retval = Qnil;
+ − 1497 Lisp_Object rest;
+ − 1498 struct gcpro gcpro1;
+ − 1499
+ − 1500 assert (type != LOCALE_GLOBAL);
+ − 1501 /* We're about to let stuff go external; make sure there aren't
+ − 1502 any dead objects */
+ − 1503 *spec_list = cleanup_assoc_list (*spec_list);
+ − 1504
+ − 1505 GCPRO1 (retval);
+ − 1506 LIST_LOOP (rest, *spec_list)
+ − 1507 {
+ − 1508 Lisp_Object spec = XCAR (rest);
+ − 1509 Lisp_Object inst_list =
+ − 1510 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 1);
+ − 1511 if (!NILP (inst_list))
+ − 1512 retval = Fcons (Fcons (XCAR (spec), inst_list), retval);
+ − 1513 }
+ − 1514 RETURN_UNGCPRO (Fnreverse (retval));
+ − 1515 }
+ − 1516
+ − 1517 static Lisp_Object *
+ − 1518 specifier_new_spec (Lisp_Object specifier, Lisp_Object locale,
+ − 1519 enum spec_locale_type type)
+ − 1520 {
+ − 1521 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1522 Lisp_Object new_spec = Fcons (locale, Qnil);
+ − 1523 assert (type != LOCALE_GLOBAL);
+ − 1524 *spec_list = Fcons (new_spec, *spec_list);
+ − 1525 return &XCDR (new_spec);
+ − 1526 }
+ − 1527
+ − 1528 /* For the given INST_LIST, return a new list comprised of elements
+ − 1529 where TAG_SET does not match the element's tag set. This operation
+ − 1530 is destructive. */
+ − 1531
+ − 1532 static Lisp_Object
+ − 1533 specifier_process_remove_inst_list (Lisp_Object inst_list,
+ − 1534 Lisp_Object tag_set, int exact_p,
+ − 1535 int *was_removed)
+ − 1536 {
+ − 1537 Lisp_Object prev = Qnil, rest;
+ − 1538
+ − 1539 *was_removed = 0;
+ − 1540
+ − 1541 LIST_LOOP (rest, inst_list)
+ − 1542 {
+ − 1543 if (tag_sets_match_p (tag_set, XCAR (XCAR (rest)), exact_p))
+ − 1544 {
+ − 1545 /* time to remove. */
+ − 1546 *was_removed = 1;
+ − 1547 if (NILP (prev))
+ − 1548 inst_list = XCDR (rest);
+ − 1549 else
+ − 1550 XCDR (prev) = XCDR (rest);
+ − 1551 }
+ − 1552 else
+ − 1553 prev = rest;
+ − 1554 }
+ − 1555
+ − 1556 return inst_list;
+ − 1557 }
+ − 1558
+ − 1559 static void
+ − 1560 specifier_remove_spec (Lisp_Object specifier, Lisp_Object locale,
+ − 1561 enum spec_locale_type type,
+ − 1562 Lisp_Object tag_set, int exact_p)
+ − 1563 {
+ − 1564 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1565 Lisp_Object assoc;
+ − 1566 int was_removed;
+ − 1567
+ − 1568 if (type == LOCALE_GLOBAL)
+ − 1569 *spec_list = specifier_process_remove_inst_list (*spec_list, tag_set,
+ − 1570 exact_p, &was_removed);
+ − 1571 else
+ − 1572 {
+ − 1573 assoc = assq_no_quit (locale, *spec_list);
+ − 1574 if (NILP (assoc))
+ − 1575 /* this locale is not found. */
+ − 1576 return;
+ − 1577 XCDR (assoc) = specifier_process_remove_inst_list (XCDR (assoc),
+ − 1578 tag_set, exact_p,
+ − 1579 &was_removed);
+ − 1580 if (NILP (XCDR (assoc)))
+ − 1581 /* no inst-pairs left; remove this locale entirely. */
+ − 1582 *spec_list = remassq_no_quit (locale, *spec_list);
+ − 1583 }
+ − 1584
+ − 1585 if (was_removed)
+ − 1586 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change,
+ − 1587 (bodily_specifier (specifier), locale));
+ − 1588 }
+ − 1589
+ − 1590 static void
+ − 1591 specifier_remove_locale_type (Lisp_Object specifier,
+ − 1592 enum spec_locale_type type,
+ − 1593 Lisp_Object tag_set, int exact_p)
+ − 1594 {
+ − 1595 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1596 Lisp_Object prev = Qnil, rest;
+ − 1597
+ − 1598 assert (type != LOCALE_GLOBAL);
+ − 1599 LIST_LOOP (rest, *spec_list)
+ − 1600 {
+ − 1601 int was_removed;
+ − 1602 int remove_spec = 0;
+ − 1603 Lisp_Object spec = XCAR (rest);
+ − 1604
+ − 1605 /* There may be dead objects floating around */
+ − 1606 /* remember, dead windows can become alive again. */
+ − 1607 if (!WINDOWP (XCAR (spec)) && object_dead_p (XCAR (spec)))
+ − 1608 {
+ − 1609 remove_spec = 1;
+ − 1610 was_removed = 0;
+ − 1611 }
+ − 1612 else
+ − 1613 {
+ − 1614 XCDR (spec) = specifier_process_remove_inst_list (XCDR (spec),
+ − 1615 tag_set, exact_p,
+ − 1616 &was_removed);
+ − 1617 if (NILP (XCDR (spec)))
+ − 1618 remove_spec = 1;
+ − 1619 }
+ − 1620
+ − 1621 if (remove_spec)
+ − 1622 {
+ − 1623 if (NILP (prev))
+ − 1624 *spec_list = XCDR (rest);
+ − 1625 else
+ − 1626 XCDR (prev) = XCDR (rest);
+ − 1627 }
+ − 1628 else
+ − 1629 prev = rest;
+ − 1630
+ − 1631 if (was_removed)
+ − 1632 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change,
+ − 1633 (bodily_specifier (specifier), XCAR (spec)));
+ − 1634 }
+ − 1635 }
+ − 1636
+ − 1637 /* NEW_LIST is going to be added to INST_LIST, with add method ADD_METH.
+ − 1638 Frob INST_LIST according to ADD_METH. No need to call an after-change
+ − 1639 function; the calling function will do this. Return either SPEC_PREPEND
+ − 1640 or SPEC_APPEND, indicating whether to prepend or append the NEW_LIST. */
+ − 1641
+ − 1642 static enum spec_add_meth
+ − 1643 handle_multiple_add_insts (Lisp_Object *inst_list,
+ − 1644 Lisp_Object new_list,
+ − 1645 enum spec_add_meth add_meth)
+ − 1646 {
+ − 1647 switch (add_meth)
+ − 1648 {
+ − 1649 case SPEC_REMOVE_TAG_SET_APPEND:
+ − 1650 add_meth = SPEC_APPEND;
+ − 1651 goto remove_tag_set;
+ − 1652 case SPEC_REMOVE_TAG_SET_PREPEND:
+ − 1653 add_meth = SPEC_PREPEND;
+ − 1654 remove_tag_set:
+ − 1655 {
+ − 1656 Lisp_Object rest;
+ − 1657
+ − 1658 LIST_LOOP (rest, new_list)
+ − 1659 {
+ − 1660 Lisp_Object canontag = canonicalize_tag_set (XCAR (XCAR (rest)));
+ − 1661 struct gcpro gcpro1;
+ − 1662
+ − 1663 GCPRO1 (canontag);
+ − 1664 /* pull out all elements from the existing list with the
+ − 1665 same tag as any tags in NEW_LIST. */
+ − 1666 *inst_list = remassoc_no_quit (canontag, *inst_list);
+ − 1667 UNGCPRO;
+ − 1668 }
+ − 1669 }
+ − 1670 return add_meth;
+ − 1671 case SPEC_REMOVE_LOCALE:
+ − 1672 *inst_list = Qnil;
+ − 1673 return SPEC_PREPEND;
+ − 1674 case SPEC_APPEND:
+ − 1675 return add_meth;
+ − 1676 default:
+ − 1677 return SPEC_PREPEND;
+ − 1678 }
+ − 1679 }
+ − 1680
+ − 1681 /* Given a LOCALE and INST_LIST that is going to be added to SPECIFIER,
+ − 1682 copy, canonicalize, and call the going_to_add methods as necessary
+ − 1683 to produce a new list that is the one that really will be added
+ − 1684 to the specifier. */
+ − 1685
+ − 1686 static Lisp_Object
+ − 1687 build_up_processed_list (Lisp_Object specifier, Lisp_Object locale,
+ − 1688 Lisp_Object inst_list)
+ − 1689 {
+ − 1690 /* The return value of this function must be GCPRO'd. */
+ − 1691 Lisp_Object rest, list_to_build_up = Qnil;
440
+ − 1692 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 1693 struct gcpro gcpro1;
+ − 1694
+ − 1695 GCPRO1 (list_to_build_up);
+ − 1696 LIST_LOOP (rest, inst_list)
+ − 1697 {
+ − 1698 Lisp_Object tag_set = XCAR (XCAR (rest));
+ − 1699 Lisp_Object sub_inst_list = Qnil;
434
+ − 1700 Lisp_Object instantiator;
428
+ − 1701 struct gcpro ngcpro1, ngcpro2;
+ − 1702
434
+ − 1703 if (HAS_SPECMETH_P (sp, copy_instantiator))
+ − 1704 instantiator = SPECMETH (sp, copy_instantiator,
+ − 1705 (XCDR (XCAR (rest))));
+ − 1706 else
+ − 1707 instantiator = Fcopy_tree (XCDR (XCAR (rest)), Qt);
+ − 1708
428
+ − 1709 NGCPRO2 (instantiator, sub_inst_list);
+ − 1710 /* call the will-add method; it may GC */
+ − 1711 sub_inst_list = HAS_SPECMETH_P (sp, going_to_add) ?
+ − 1712 SPECMETH (sp, going_to_add,
+ − 1713 (bodily_specifier (specifier), locale,
+ − 1714 tag_set, instantiator)) :
+ − 1715 Qt;
+ − 1716 if (EQ (sub_inst_list, Qt))
+ − 1717 /* no change here. */
+ − 1718 sub_inst_list = list1 (Fcons (canonicalize_tag_set (tag_set),
+ − 1719 instantiator));
+ − 1720 else
+ − 1721 {
+ − 1722 /* now canonicalize all the tag sets in the new objects */
+ − 1723 Lisp_Object rest2;
+ − 1724 LIST_LOOP (rest2, sub_inst_list)
+ − 1725 XCAR (XCAR (rest2)) = canonicalize_tag_set (XCAR (XCAR (rest2)));
+ − 1726 }
+ − 1727
+ − 1728 list_to_build_up = nconc2 (sub_inst_list, list_to_build_up);
+ − 1729 NUNGCPRO;
+ − 1730 }
+ − 1731
+ − 1732 RETURN_UNGCPRO (Fnreverse (list_to_build_up));
+ − 1733 }
+ − 1734
+ − 1735 /* Add a specification (locale and instantiator list) to a specifier.
+ − 1736 ADD_METH specifies what to do with existing specifications in the
+ − 1737 specifier, and is an enum that corresponds to the values in
+ − 1738 `add-spec-to-specifier'. The calling routine is responsible for
+ − 1739 validating LOCALE and INST-LIST, but the tag-sets in INST-LIST
+ − 1740 do not need to be canonicalized. */
+ − 1741
+ − 1742 /* #### I really need to rethink the after-change
+ − 1743 functions to make them easier to use and more efficient. */
+ − 1744
+ − 1745 static void
+ − 1746 specifier_add_spec (Lisp_Object specifier, Lisp_Object locale,
+ − 1747 Lisp_Object inst_list, enum spec_add_meth add_meth)
+ − 1748 {
440
+ − 1749 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 1750 enum spec_locale_type type = locale_type_from_locale (locale);
+ − 1751 Lisp_Object *orig_inst_list, tem;
+ − 1752 Lisp_Object list_to_build_up = Qnil;
+ − 1753 struct gcpro gcpro1;
+ − 1754
+ − 1755 GCPRO1 (list_to_build_up);
+ − 1756 list_to_build_up = build_up_processed_list (specifier, locale, inst_list);
+ − 1757 /* Now handle REMOVE_LOCALE_TYPE and REMOVE_ALL. These are the
+ − 1758 add-meth types that affect locales other than this one. */
+ − 1759 if (add_meth == SPEC_REMOVE_LOCALE_TYPE)
+ − 1760 specifier_remove_locale_type (specifier, type, Qnil, 0);
+ − 1761 else if (add_meth == SPEC_REMOVE_ALL)
+ − 1762 {
+ − 1763 specifier_remove_locale_type (specifier, LOCALE_BUFFER, Qnil, 0);
+ − 1764 specifier_remove_locale_type (specifier, LOCALE_WINDOW, Qnil, 0);
+ − 1765 specifier_remove_locale_type (specifier, LOCALE_FRAME, Qnil, 0);
+ − 1766 specifier_remove_locale_type (specifier, LOCALE_DEVICE, Qnil, 0);
+ − 1767 specifier_remove_spec (specifier, Qglobal, LOCALE_GLOBAL, Qnil, 0);
+ − 1768 }
+ − 1769
+ − 1770 orig_inst_list = specifier_get_inst_list (specifier, locale, type);
+ − 1771 if (!orig_inst_list)
+ − 1772 orig_inst_list = specifier_new_spec (specifier, locale, type);
+ − 1773 add_meth = handle_multiple_add_insts (orig_inst_list, list_to_build_up,
+ − 1774 add_meth);
+ − 1775
+ − 1776 if (add_meth == SPEC_PREPEND)
+ − 1777 tem = nconc2 (list_to_build_up, *orig_inst_list);
+ − 1778 else if (add_meth == SPEC_APPEND)
+ − 1779 tem = nconc2 (*orig_inst_list, list_to_build_up);
+ − 1780 else
442
+ − 1781 {
+ − 1782 abort ();
+ − 1783 tem = Qnil;
+ − 1784 }
428
+ − 1785
+ − 1786 *orig_inst_list = tem;
+ − 1787
+ − 1788 UNGCPRO;
+ − 1789
+ − 1790 /* call the after-change method */
+ − 1791 MAYBE_SPECMETH (sp, after_change,
+ − 1792 (bodily_specifier (specifier), locale));
+ − 1793 }
+ − 1794
+ − 1795 static void
+ − 1796 specifier_copy_spec (Lisp_Object specifier, Lisp_Object dest,
+ − 1797 Lisp_Object locale, enum spec_locale_type type,
+ − 1798 Lisp_Object tag_set, int exact_p,
+ − 1799 enum spec_add_meth add_meth)
+ − 1800 {
+ − 1801 Lisp_Object inst_list =
+ − 1802 specifier_get_external_inst_list (specifier, locale, type, tag_set,
+ − 1803 exact_p, 0, 0);
+ − 1804 specifier_add_spec (dest, locale, inst_list, add_meth);
+ − 1805 }
+ − 1806
+ − 1807 static void
+ − 1808 specifier_copy_locale_type (Lisp_Object specifier, Lisp_Object dest,
+ − 1809 enum spec_locale_type type,
+ − 1810 Lisp_Object tag_set, int exact_p,
+ − 1811 enum spec_add_meth add_meth)
+ − 1812 {
+ − 1813 Lisp_Object *src_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1814 Lisp_Object rest;
+ − 1815
+ − 1816 /* This algorithm is O(n^2) in running time.
+ − 1817 It's certainly possible to implement an O(n log n) algorithm,
+ − 1818 but I doubt there's any need to. */
+ − 1819
+ − 1820 LIST_LOOP (rest, *src_list)
+ − 1821 {
+ − 1822 Lisp_Object spec = XCAR (rest);
+ − 1823 /* There may be dead objects floating around */
+ − 1824 /* remember, dead windows can become alive again. */
+ − 1825 if (WINDOWP (XCAR (spec)) || !object_dead_p (XCAR (spec)))
+ − 1826 specifier_add_spec
+ − 1827 (dest, XCAR (spec),
+ − 1828 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 0),
+ − 1829 add_meth);
+ − 1830 }
+ − 1831 }
+ − 1832
+ − 1833 /* map MAPFUN over the locales in SPECIFIER that are given in LOCALE.
+ − 1834 CLOSURE is passed unchanged to MAPFUN. LOCALE can be one of
+ − 1835
+ − 1836 -- nil (same as 'all)
+ − 1837 -- a single locale, locale type, or 'all
+ − 1838 -- a list of locales, locale types, and/or 'all
+ − 1839
+ − 1840 MAPFUN is called for each locale and locale type given; for 'all,
+ − 1841 it is called for the locale 'global and for the four possible
+ − 1842 locale types. In each invocation, either LOCALE will be a locale
+ − 1843 and LOCALE_TYPE will be the locale type of this locale,
+ − 1844 or LOCALE will be nil and LOCALE_TYPE will be a locale type.
+ − 1845 If MAPFUN ever returns non-zero, the mapping is halted and the
+ − 1846 value returned is returned from map_specifier(). Otherwise, the
+ − 1847 mapping proceeds to the end and map_specifier() returns 0.
+ − 1848 */
+ − 1849
+ − 1850 static int
+ − 1851 map_specifier (Lisp_Object specifier, Lisp_Object locale,
+ − 1852 int (*mapfun) (Lisp_Object specifier,
+ − 1853 Lisp_Object locale,
+ − 1854 enum spec_locale_type locale_type,
+ − 1855 Lisp_Object tag_set,
+ − 1856 int exact_p,
+ − 1857 void *closure),
+ − 1858 Lisp_Object tag_set, Lisp_Object exact_p,
+ − 1859 void *closure)
+ − 1860 {
+ − 1861 int retval = 0;
+ − 1862 Lisp_Object rest;
+ − 1863 struct gcpro gcpro1, gcpro2;
+ − 1864
+ − 1865 GCPRO2 (tag_set, locale);
+ − 1866 locale = decode_locale_list (locale);
+ − 1867 tag_set = decode_specifier_tag_set (tag_set);
+ − 1868 tag_set = canonicalize_tag_set (tag_set);
+ − 1869
+ − 1870 LIST_LOOP (rest, locale)
+ − 1871 {
+ − 1872 Lisp_Object theloc = XCAR (rest);
+ − 1873 if (!NILP (Fvalid_specifier_locale_p (theloc)))
+ − 1874 {
+ − 1875 retval = (*mapfun) (specifier, theloc,
+ − 1876 locale_type_from_locale (theloc),
+ − 1877 tag_set, !NILP (exact_p), closure);
+ − 1878 if (retval)
+ − 1879 break;
+ − 1880 }
+ − 1881 else if (!NILP (Fvalid_specifier_locale_type_p (theloc)))
+ − 1882 {
+ − 1883 retval = (*mapfun) (specifier, Qnil,
+ − 1884 decode_locale_type (theloc), tag_set,
+ − 1885 !NILP (exact_p), closure);
+ − 1886 if (retval)
+ − 1887 break;
+ − 1888 }
+ − 1889 else
+ − 1890 {
+ − 1891 assert (EQ (theloc, Qall));
+ − 1892 retval = (*mapfun) (specifier, Qnil, LOCALE_BUFFER, tag_set,
+ − 1893 !NILP (exact_p), closure);
+ − 1894 if (retval)
+ − 1895 break;
+ − 1896 retval = (*mapfun) (specifier, Qnil, LOCALE_WINDOW, tag_set,
+ − 1897 !NILP (exact_p), closure);
+ − 1898 if (retval)
+ − 1899 break;
+ − 1900 retval = (*mapfun) (specifier, Qnil, LOCALE_FRAME, tag_set,
+ − 1901 !NILP (exact_p), closure);
+ − 1902 if (retval)
+ − 1903 break;
+ − 1904 retval = (*mapfun) (specifier, Qnil, LOCALE_DEVICE, tag_set,
+ − 1905 !NILP (exact_p), closure);
+ − 1906 if (retval)
+ − 1907 break;
+ − 1908 retval = (*mapfun) (specifier, Qglobal, LOCALE_GLOBAL, tag_set,
+ − 1909 !NILP (exact_p), closure);
+ − 1910 if (retval)
+ − 1911 break;
+ − 1912 }
+ − 1913 }
+ − 1914
+ − 1915 UNGCPRO;
+ − 1916 return retval;
+ − 1917 }
+ − 1918
+ − 1919 DEFUN ("add-spec-to-specifier", Fadd_spec_to_specifier, 2, 5, 0, /*
+ − 1920 Add a specification to SPECIFIER.
+ − 1921 The specification maps from LOCALE (which should be a window, buffer,
+ − 1922 frame, device, or 'global, and defaults to 'global) to INSTANTIATOR,
+ − 1923 whose allowed values depend on the type of the specifier. Optional
+ − 1924 argument TAG-SET limits the instantiator to apply only to the specified
+ − 1925 tag set, which should be a list of tags all of which must match the
+ − 1926 device being instantiated over (tags are a device type, a device class,
+ − 1927 or tags defined with `define-specifier-tag'). Specifying a single
+ − 1928 symbol for TAG-SET is equivalent to specifying a one-element list
+ − 1929 containing that symbol. Optional argument HOW-TO-ADD specifies what to
+ − 1930 do if there are already specifications in the specifier.
+ − 1931 It should be one of
+ − 1932
+ − 1933 'prepend Put at the beginning of the current list of
+ − 1934 instantiators for LOCALE.
+ − 1935 'append Add to the end of the current list of
+ − 1936 instantiators for LOCALE.
+ − 1937 'remove-tag-set-prepend (this is the default)
+ − 1938 Remove any existing instantiators whose tag set is
+ − 1939 the same as TAG-SET; then put the new instantiator
+ − 1940 at the beginning of the current list. ("Same tag
+ − 1941 set" means that they contain the same elements.
+ − 1942 The order may be different.)
+ − 1943 'remove-tag-set-append
+ − 1944 Remove any existing instantiators whose tag set is
+ − 1945 the same as TAG-SET; then put the new instantiator
+ − 1946 at the end of the current list.
+ − 1947 'remove-locale Remove all previous instantiators for this locale
+ − 1948 before adding the new spec.
+ − 1949 'remove-locale-type Remove all specifications for all locales of the
+ − 1950 same type as LOCALE (this includes LOCALE itself)
+ − 1951 before adding the new spec.
+ − 1952 'remove-all Remove all specifications from the specifier
+ − 1953 before adding the new spec.
+ − 1954
+ − 1955 You can retrieve the specifications for a particular locale or locale type
+ − 1956 with the function `specifier-spec-list' or `specifier-specs'.
+ − 1957 */
+ − 1958 (specifier, instantiator, locale, tag_set, how_to_add))
+ − 1959 {
+ − 1960 enum spec_add_meth add_meth;
+ − 1961 Lisp_Object inst_list;
+ − 1962 struct gcpro gcpro1;
+ − 1963
+ − 1964 CHECK_SPECIFIER (specifier);
+ − 1965 check_modifiable_specifier (specifier);
+ − 1966
+ − 1967 locale = decode_locale (locale);
+ − 1968 check_valid_instantiator (instantiator,
+ − 1969 decode_specifier_type
+ − 1970 (Fspecifier_type (specifier), ERROR_ME),
+ − 1971 ERROR_ME);
+ − 1972 /* tag_set might be newly-created material, but it's part of inst_list
+ − 1973 so is properly GC-protected. */
+ − 1974 tag_set = decode_specifier_tag_set (tag_set);
+ − 1975 add_meth = decode_how_to_add_specification (how_to_add);
+ − 1976
+ − 1977 inst_list = list1 (Fcons (tag_set, instantiator));
+ − 1978 GCPRO1 (inst_list);
+ − 1979 specifier_add_spec (specifier, locale, inst_list, add_meth);
+ − 1980 recompute_cached_specifier_everywhere (specifier);
+ − 1981 RETURN_UNGCPRO (Qnil);
+ − 1982 }
+ − 1983
+ − 1984 DEFUN ("add-spec-list-to-specifier", Fadd_spec_list_to_specifier, 2, 3, 0, /*
444
+ − 1985 Add SPEC-LIST (a list of specifications) to SPECIFIER.
+ − 1986 The format of SPEC-LIST is
428
+ − 1987
+ − 1988 ((LOCALE (TAG-SET . INSTANTIATOR) ...) ...)
+ − 1989
+ − 1990 where
+ − 1991 LOCALE := a window, a buffer, a frame, a device, or 'global
+ − 1992 TAG-SET := an unordered list of zero or more TAGS, each of which
+ − 1993 is a symbol
+ − 1994 TAG := a device class (see `valid-device-class-p'), a device type
+ − 1995 (see `valid-console-type-p'), or a tag defined with
+ − 1996 `define-specifier-tag'
+ − 1997 INSTANTIATOR := format determined by the type of specifier
+ − 1998
+ − 1999 The pair (TAG-SET . INSTANTIATOR) is called an `inst-pair'.
+ − 2000 A list of inst-pairs is called an `inst-list'.
+ − 2001 The pair (LOCALE . INST-LIST) is called a `specification' or `spec'.
+ − 2002 A spec-list, then, can be viewed as a list of specifications.
+ − 2003
+ − 2004 HOW-TO-ADD specifies how to combine the new specifications with
+ − 2005 the existing ones, and has the same semantics as for
+ − 2006 `add-spec-to-specifier'.
+ − 2007
+ − 2008 In many circumstances, the higher-level function `set-specifier' is
+ − 2009 more convenient and should be used instead.
+ − 2010 */
+ − 2011 (specifier, spec_list, how_to_add))
+ − 2012 {
+ − 2013 enum spec_add_meth add_meth;
+ − 2014 Lisp_Object rest;
+ − 2015
+ − 2016 CHECK_SPECIFIER (specifier);
+ − 2017 check_modifiable_specifier (specifier);
+ − 2018
+ − 2019 check_valid_spec_list (spec_list,
+ − 2020 decode_specifier_type
+ − 2021 (Fspecifier_type (specifier), ERROR_ME),
+ − 2022 ERROR_ME);
+ − 2023 add_meth = decode_how_to_add_specification (how_to_add);
+ − 2024
+ − 2025 LIST_LOOP (rest, spec_list)
+ − 2026 {
+ − 2027 /* Placating the GCC god. */
+ − 2028 Lisp_Object specification = XCAR (rest);
+ − 2029 Lisp_Object locale = XCAR (specification);
+ − 2030 Lisp_Object inst_list = XCDR (specification);
+ − 2031
+ − 2032 specifier_add_spec (specifier, locale, inst_list, add_meth);
+ − 2033 }
+ − 2034 recompute_cached_specifier_everywhere (specifier);
+ − 2035 return Qnil;
+ − 2036 }
+ − 2037
+ − 2038 void
+ − 2039 add_spec_to_ghost_specifier (Lisp_Object specifier, Lisp_Object instantiator,
+ − 2040 Lisp_Object locale, Lisp_Object tag_set,
+ − 2041 Lisp_Object how_to_add)
+ − 2042 {
+ − 2043 int depth = unlock_ghost_specifiers_protected ();
+ − 2044 Fadd_spec_to_specifier (XSPECIFIER(specifier)->fallback,
+ − 2045 instantiator, locale, tag_set, how_to_add);
+ − 2046 unbind_to (depth, Qnil);
+ − 2047 }
+ − 2048
+ − 2049 struct specifier_spec_list_closure
+ − 2050 {
+ − 2051 Lisp_Object head, tail;
+ − 2052 };
+ − 2053
+ − 2054 static int
+ − 2055 specifier_spec_list_mapfun (Lisp_Object specifier,
+ − 2056 Lisp_Object locale,
+ − 2057 enum spec_locale_type locale_type,
+ − 2058 Lisp_Object tag_set,
+ − 2059 int exact_p,
+ − 2060 void *closure)
+ − 2061 {
+ − 2062 struct specifier_spec_list_closure *cl =
+ − 2063 (struct specifier_spec_list_closure *) closure;
+ − 2064 Lisp_Object partial;
+ − 2065
+ − 2066 if (NILP (locale))
+ − 2067 partial = specifier_get_external_spec_list (specifier,
+ − 2068 locale_type,
+ − 2069 tag_set, exact_p);
+ − 2070 else
+ − 2071 {
+ − 2072 partial = specifier_get_external_inst_list (specifier, locale,
+ − 2073 locale_type, tag_set,
+ − 2074 exact_p, 0, 1);
+ − 2075 if (!NILP (partial))
+ − 2076 partial = list1 (Fcons (locale, partial));
+ − 2077 }
+ − 2078 if (NILP (partial))
+ − 2079 return 0;
+ − 2080
+ − 2081 /* tack on the new list */
+ − 2082 if (NILP (cl->tail))
+ − 2083 cl->head = cl->tail = partial;
+ − 2084 else
+ − 2085 XCDR (cl->tail) = partial;
+ − 2086 /* find the new tail */
+ − 2087 while (CONSP (XCDR (cl->tail)))
+ − 2088 cl->tail = XCDR (cl->tail);
+ − 2089 return 0;
+ − 2090 }
+ − 2091
+ − 2092 /* For the given SPECIFIER create and return a list of all specs
+ − 2093 contained within it, subject to LOCALE. If LOCALE is a locale, only
+ − 2094 specs in that locale will be returned. If LOCALE is a locale type,
+ − 2095 all specs in all locales of that type will be returned. If LOCALE is
+ − 2096 nil, all specs will be returned. This always copies lists and never
+ − 2097 returns the actual lists, because we do not want someone manipulating
+ − 2098 the actual objects. This may cause a slight loss of potential
+ − 2099 functionality but if we were to allow it then a user could manage to
+ − 2100 violate our assertion that the specs contained in the actual
+ − 2101 specifier lists are all valid. */
+ − 2102
+ − 2103 DEFUN ("specifier-spec-list", Fspecifier_spec_list, 1, 4, 0, /*
+ − 2104 Return the spec-list of specifications for SPECIFIER in LOCALE.
+ − 2105
+ − 2106 If LOCALE is a particular locale (a buffer, window, frame, device,
+ − 2107 or 'global), a spec-list consisting of the specification for that
+ − 2108 locale will be returned.
+ − 2109
+ − 2110 If LOCALE is a locale type (i.e. 'buffer, 'window, 'frame, or 'device),
+ − 2111 a spec-list of the specifications for all locales of that type will be
+ − 2112 returned.
+ − 2113
+ − 2114 If LOCALE is nil or 'all, a spec-list of all specifications in SPECIFIER
+ − 2115 will be returned.
+ − 2116
+ − 2117 LOCALE can also be a list of locales, locale types, and/or 'all; the
+ − 2118 result is as if `specifier-spec-list' were called on each element of the
+ − 2119 list and the results concatenated together.
+ − 2120
+ − 2121 Only instantiators where TAG-SET (a list of zero or more tags) is a
+ − 2122 subset of (or possibly equal to) the instantiator's tag set are returned.
+ − 2123 \(The default value of nil is a subset of all tag sets, so in this case
+ − 2124 no instantiators will be screened out.) If EXACT-P is non-nil, however,
+ − 2125 TAG-SET must be equal to an instantiator's tag set for the instantiator
+ − 2126 to be returned.
+ − 2127 */
+ − 2128 (specifier, locale, tag_set, exact_p))
+ − 2129 {
+ − 2130 struct specifier_spec_list_closure cl;
+ − 2131 struct gcpro gcpro1, gcpro2;
+ − 2132
+ − 2133 CHECK_SPECIFIER (specifier);
+ − 2134 cl.head = cl.tail = Qnil;
+ − 2135 GCPRO2 (cl.head, cl.tail);
+ − 2136 map_specifier (specifier, locale, specifier_spec_list_mapfun,
+ − 2137 tag_set, exact_p, &cl);
+ − 2138 UNGCPRO;
+ − 2139 return cl.head;
+ − 2140 }
+ − 2141
+ − 2142
+ − 2143 DEFUN ("specifier-specs", Fspecifier_specs, 1, 4, 0, /*
+ − 2144 Return the specification(s) for SPECIFIER in LOCALE.
+ − 2145
+ − 2146 If LOCALE is a single locale or is a list of one element containing a
+ − 2147 single locale, then a "short form" of the instantiators for that locale
+ − 2148 will be returned. Otherwise, this function is identical to
+ − 2149 `specifier-spec-list'.
+ − 2150
+ − 2151 The "short form" is designed for readability and not for ease of use
+ − 2152 in Lisp programs, and is as follows:
+ − 2153
+ − 2154 1. If there is only one instantiator, then an inst-pair (i.e. cons of
+ − 2155 tag and instantiator) will be returned; otherwise a list of
+ − 2156 inst-pairs will be returned.
+ − 2157 2. For each inst-pair returned, if the instantiator's tag is 'any,
+ − 2158 the tag will be removed and the instantiator itself will be returned
+ − 2159 instead of the inst-pair.
+ − 2160 3. If there is only one instantiator, its value is nil, and its tag is
+ − 2161 'any, a one-element list containing nil will be returned rather
+ − 2162 than just nil, to distinguish this case from there being no
+ − 2163 instantiators at all.
+ − 2164 */
+ − 2165 (specifier, locale, tag_set, exact_p))
+ − 2166 {
+ − 2167 if (!NILP (Fvalid_specifier_locale_p (locale)) ||
+ − 2168 (CONSP (locale) && !NILP (Fvalid_specifier_locale_p (XCAR (locale))) &&
+ − 2169 NILP (XCDR (locale))))
+ − 2170 {
+ − 2171 struct gcpro gcpro1;
+ − 2172
+ − 2173 CHECK_SPECIFIER (specifier);
+ − 2174 if (CONSP (locale))
+ − 2175 locale = XCAR (locale);
+ − 2176 GCPRO1 (tag_set);
+ − 2177 tag_set = decode_specifier_tag_set (tag_set);
+ − 2178 tag_set = canonicalize_tag_set (tag_set);
+ − 2179 RETURN_UNGCPRO
+ − 2180 (specifier_get_external_inst_list (specifier, locale,
+ − 2181 locale_type_from_locale (locale),
+ − 2182 tag_set, !NILP (exact_p), 1, 1));
+ − 2183 }
+ − 2184 else
+ − 2185 return Fspecifier_spec_list (specifier, locale, tag_set, exact_p);
+ − 2186 }
+ − 2187
+ − 2188 static int
+ − 2189 remove_specifier_mapfun (Lisp_Object specifier,
+ − 2190 Lisp_Object locale,
+ − 2191 enum spec_locale_type locale_type,
+ − 2192 Lisp_Object tag_set,
+ − 2193 int exact_p,
+ − 2194 void *ignored_closure)
+ − 2195 {
+ − 2196 if (NILP (locale))
+ − 2197 specifier_remove_locale_type (specifier, locale_type, tag_set, exact_p);
+ − 2198 else
+ − 2199 specifier_remove_spec (specifier, locale, locale_type, tag_set, exact_p);
+ − 2200 return 0;
+ − 2201 }
+ − 2202
+ − 2203 DEFUN ("remove-specifier", Fremove_specifier, 1, 4, 0, /*
+ − 2204 Remove specification(s) for SPECIFIER.
+ − 2205
+ − 2206 If LOCALE is a particular locale (a window, buffer, frame, device,
+ − 2207 or 'global), the specification for that locale will be removed.
+ − 2208
+ − 2209 If instead, LOCALE is a locale type (i.e. 'window, 'buffer, 'frame,
+ − 2210 or 'device), the specifications for all locales of that type will be
+ − 2211 removed.
+ − 2212
+ − 2213 If LOCALE is nil or 'all, all specifications will be removed.
+ − 2214
+ − 2215 LOCALE can also be a list of locales, locale types, and/or 'all; this
+ − 2216 is equivalent to calling `remove-specifier' for each of the elements
+ − 2217 in the list.
+ − 2218
+ − 2219 Only instantiators where TAG-SET (a list of zero or more tags) is a
+ − 2220 subset of (or possibly equal to) the instantiator's tag set are removed.
+ − 2221 The default value of nil is a subset of all tag sets, so in this case
+ − 2222 no instantiators will be screened out. If EXACT-P is non-nil, however,
+ − 2223 TAG-SET must be equal to an instantiator's tag set for the instantiator
+ − 2224 to be removed.
+ − 2225 */
+ − 2226 (specifier, locale, tag_set, exact_p))
+ − 2227 {
+ − 2228 CHECK_SPECIFIER (specifier);
+ − 2229 check_modifiable_specifier (specifier);
+ − 2230
+ − 2231 map_specifier (specifier, locale, remove_specifier_mapfun,
+ − 2232 tag_set, exact_p, 0);
+ − 2233 recompute_cached_specifier_everywhere (specifier);
+ − 2234 return Qnil;
+ − 2235 }
+ − 2236
+ − 2237 void
+ − 2238 remove_ghost_specifier (Lisp_Object specifier, Lisp_Object locale,
+ − 2239 Lisp_Object tag_set, Lisp_Object exact_p)
+ − 2240 {
+ − 2241 int depth = unlock_ghost_specifiers_protected ();
+ − 2242 Fremove_specifier (XSPECIFIER(specifier)->fallback,
+ − 2243 locale, tag_set, exact_p);
+ − 2244 unbind_to (depth, Qnil);
+ − 2245 }
+ − 2246
+ − 2247 struct copy_specifier_closure
+ − 2248 {
+ − 2249 Lisp_Object dest;
+ − 2250 enum spec_add_meth add_meth;
+ − 2251 int add_meth_is_nil;
+ − 2252 };
+ − 2253
+ − 2254 static int
+ − 2255 copy_specifier_mapfun (Lisp_Object specifier,
+ − 2256 Lisp_Object locale,
+ − 2257 enum spec_locale_type locale_type,
+ − 2258 Lisp_Object tag_set,
+ − 2259 int exact_p,
+ − 2260 void *closure)
+ − 2261 {
+ − 2262 struct copy_specifier_closure *cl =
+ − 2263 (struct copy_specifier_closure *) closure;
+ − 2264
+ − 2265 if (NILP (locale))
+ − 2266 specifier_copy_locale_type (specifier, cl->dest, locale_type,
+ − 2267 tag_set, exact_p,
+ − 2268 cl->add_meth_is_nil ?
+ − 2269 SPEC_REMOVE_LOCALE_TYPE :
+ − 2270 cl->add_meth);
+ − 2271 else
+ − 2272 specifier_copy_spec (specifier, cl->dest, locale, locale_type,
+ − 2273 tag_set, exact_p,
+ − 2274 cl->add_meth_is_nil ? SPEC_REMOVE_LOCALE :
+ − 2275 cl->add_meth);
+ − 2276 return 0;
+ − 2277 }
+ − 2278
+ − 2279 DEFUN ("copy-specifier", Fcopy_specifier, 1, 6, 0, /*
+ − 2280 Copy SPECIFIER to DEST, or create a new one if DEST is nil.
+ − 2281
+ − 2282 If DEST is nil or omitted, a new specifier will be created and the
+ − 2283 specifications copied into it. Otherwise, the specifications will be
+ − 2284 copied into the existing specifier in DEST.
+ − 2285
+ − 2286 If LOCALE is nil or 'all, all specifications will be copied. If LOCALE
+ − 2287 is a particular locale, the specification for that particular locale will
+ − 2288 be copied. If LOCALE is a locale type, the specifications for all locales
+ − 2289 of that type will be copied. LOCALE can also be a list of locales,
+ − 2290 locale types, and/or 'all; this is equivalent to calling `copy-specifier'
+ − 2291 for each of the elements of the list. See `specifier-spec-list' for more
+ − 2292 information about LOCALE.
+ − 2293
+ − 2294 Only instantiators where TAG-SET (a list of zero or more tags) is a
+ − 2295 subset of (or possibly equal to) the instantiator's tag set are copied.
+ − 2296 The default value of nil is a subset of all tag sets, so in this case
+ − 2297 no instantiators will be screened out. If EXACT-P is non-nil, however,
+ − 2298 TAG-SET must be equal to an instantiator's tag set for the instantiator
+ − 2299 to be copied.
+ − 2300
+ − 2301 Optional argument HOW-TO-ADD specifies what to do with existing
+ − 2302 specifications in DEST. If nil, then whichever locales or locale types
+ − 2303 are copied will first be completely erased in DEST. Otherwise, it is
+ − 2304 the same as in `add-spec-to-specifier'.
+ − 2305 */
+ − 2306 (specifier, dest, locale, tag_set, exact_p, how_to_add))
+ − 2307 {
+ − 2308 struct gcpro gcpro1;
+ − 2309 struct copy_specifier_closure cl;
+ − 2310
+ − 2311 CHECK_SPECIFIER (specifier);
+ − 2312 if (NILP (how_to_add))
+ − 2313 cl.add_meth_is_nil = 1;
+ − 2314 else
+ − 2315 cl.add_meth_is_nil = 0;
+ − 2316 cl.add_meth = decode_how_to_add_specification (how_to_add);
+ − 2317 if (NILP (dest))
+ − 2318 {
+ − 2319 /* #### What about copying the extra data? */
+ − 2320 dest = make_specifier (XSPECIFIER (specifier)->methods);
+ − 2321 }
+ − 2322 else
+ − 2323 {
+ − 2324 CHECK_SPECIFIER (dest);
+ − 2325 check_modifiable_specifier (dest);
+ − 2326 if (XSPECIFIER (dest)->methods != XSPECIFIER (specifier)->methods)
563
+ − 2327 invalid_argument ("Specifiers not of same type", Qunbound);
428
+ − 2328 }
+ − 2329
+ − 2330 cl.dest = dest;
+ − 2331 GCPRO1 (dest);
+ − 2332 map_specifier (specifier, locale, copy_specifier_mapfun,
+ − 2333 tag_set, exact_p, &cl);
+ − 2334 UNGCPRO;
+ − 2335 recompute_cached_specifier_everywhere (dest);
+ − 2336 return dest;
+ − 2337 }
+ − 2338
+ − 2339
+ − 2340 /************************************************************************/
+ − 2341 /* Instancing */
+ − 2342 /************************************************************************/
+ − 2343
+ − 2344 static Lisp_Object
+ − 2345 call_validate_matchspec_method (Lisp_Object boxed_method,
+ − 2346 Lisp_Object matchspec)
+ − 2347 {
+ − 2348 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (matchspec);
+ − 2349 return Qt;
+ − 2350 }
+ − 2351
+ − 2352 static Lisp_Object
+ − 2353 check_valid_specifier_matchspec (Lisp_Object matchspec,
+ − 2354 struct specifier_methods *meths,
578
+ − 2355 Error_Behavior errb)
428
+ − 2356 {
+ − 2357 if (meths->validate_matchspec_method)
+ − 2358 {
+ − 2359 Lisp_Object retval;
+ − 2360
+ − 2361 if (ERRB_EQ (errb, ERROR_ME))
+ − 2362 {
+ − 2363 (meths->validate_matchspec_method) (matchspec);
+ − 2364 retval = Qt;
+ − 2365 }
+ − 2366 else
+ − 2367 {
+ − 2368 Lisp_Object opaque =
+ − 2369 make_opaque_ptr ((void *) meths->validate_matchspec_method);
+ − 2370 struct gcpro gcpro1;
+ − 2371
+ − 2372 GCPRO1 (opaque);
+ − 2373 retval = call_with_suspended_errors
+ − 2374 ((lisp_fn_t) call_validate_matchspec_method,
+ − 2375 Qnil, Qspecifier, errb, 2, opaque, matchspec);
+ − 2376
+ − 2377 free_opaque_ptr (opaque);
+ − 2378 UNGCPRO;
+ − 2379 }
+ − 2380
+ − 2381 return retval;
+ − 2382 }
+ − 2383 else
+ − 2384 {
563
+ − 2385 maybe_sferror
428
+ − 2386 ("Matchspecs not allowed for this specifier type",
+ − 2387 intern (meths->name), Qspecifier, errb);
+ − 2388 return Qnil;
+ − 2389 }
+ − 2390 }
+ − 2391
442
+ − 2392 DEFUN ("check-valid-specifier-matchspec", Fcheck_valid_specifier_matchspec, 2,
+ − 2393 2, 0, /*
428
+ − 2394 Signal an error if MATCHSPEC is invalid for SPECIFIER-TYPE.
+ − 2395 See `specifier-matching-instance' for a description of matchspecs.
+ − 2396 */
+ − 2397 (matchspec, specifier_type))
+ − 2398 {
+ − 2399 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 2400 ERROR_ME);
+ − 2401
+ − 2402 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME);
+ − 2403 }
+ − 2404
+ − 2405 DEFUN ("valid-specifier-matchspec-p", Fvalid_specifier_matchspec_p, 2, 2, 0, /*
+ − 2406 Return non-nil if MATCHSPEC is valid for SPECIFIER-TYPE.
+ − 2407 See `specifier-matching-instance' for a description of matchspecs.
+ − 2408 */
+ − 2409 (matchspec, specifier_type))
+ − 2410 {
+ − 2411 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 2412 ERROR_ME);
+ − 2413
+ − 2414 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME_NOT);
+ − 2415 }
+ − 2416
+ − 2417 /* This function is purposely not callable from Lisp. If a Lisp
+ − 2418 caller wants to set a fallback, they should just set the
+ − 2419 global value. */
+ − 2420
+ − 2421 void
+ − 2422 set_specifier_fallback (Lisp_Object specifier, Lisp_Object fallback)
+ − 2423 {
440
+ − 2424 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2425 assert (SPECIFIERP (fallback) ||
+ − 2426 !NILP (Fvalid_inst_list_p (fallback, Fspecifier_type (specifier))));
+ − 2427 if (SPECIFIERP (fallback))
+ − 2428 assert (EQ (Fspecifier_type (specifier), Fspecifier_type (fallback)));
+ − 2429 if (BODILY_SPECIFIER_P (sp))
+ − 2430 GHOST_SPECIFIER(sp)->fallback = fallback;
+ − 2431 else
+ − 2432 sp->fallback = fallback;
+ − 2433 /* call the after-change method */
+ − 2434 MAYBE_SPECMETH (sp, after_change,
+ − 2435 (bodily_specifier (specifier), Qfallback));
+ − 2436 recompute_cached_specifier_everywhere (specifier);
+ − 2437 }
+ − 2438
+ − 2439 DEFUN ("specifier-fallback", Fspecifier_fallback, 1, 1, 0, /*
+ − 2440 Return the fallback value for SPECIFIER.
+ − 2441 Fallback values are provided by the C code for certain built-in
+ − 2442 specifiers to make sure that instancing won't fail even if all
+ − 2443 specs are removed from the specifier, or to implement simple
+ − 2444 inheritance behavior (e.g. this method is used to ensure that
+ − 2445 faces other than 'default inherit their attributes from 'default).
+ − 2446 By design, you cannot change the fallback value, and specifiers
+ − 2447 created with `make-specifier' will never have a fallback (although
+ − 2448 a similar, Lisp-accessible capability may be provided in the future
+ − 2449 to allow for inheritance).
+ − 2450
+ − 2451 The fallback value will be an inst-list that is instanced like
+ − 2452 any other inst-list, a specifier of the same type as SPECIFIER
+ − 2453 \(results in inheritance), or nil for no fallback.
+ − 2454
+ − 2455 When you instance a specifier, you can explicitly request that the
+ − 2456 fallback not be consulted. (The C code does this, for example, when
+ − 2457 merging faces.) See `specifier-instance'.
+ − 2458 */
+ − 2459 (specifier))
+ − 2460 {
+ − 2461 CHECK_SPECIFIER (specifier);
+ − 2462 return Fcopy_tree (XSPECIFIER (specifier)->fallback, Qt);
+ − 2463 }
+ − 2464
+ − 2465 static Lisp_Object
+ − 2466 specifier_instance_from_inst_list (Lisp_Object specifier,
+ − 2467 Lisp_Object matchspec,
+ − 2468 Lisp_Object domain,
+ − 2469 Lisp_Object inst_list,
578
+ − 2470 Error_Behavior errb, int no_quit,
428
+ − 2471 Lisp_Object depth)
+ − 2472 {
+ − 2473 /* This function can GC */
440
+ − 2474 Lisp_Specifier *sp;
428
+ − 2475 Lisp_Object device;
+ − 2476 Lisp_Object rest;
+ − 2477 int count = specpdl_depth ();
+ − 2478 struct gcpro gcpro1, gcpro2;
+ − 2479
+ − 2480 GCPRO2 (specifier, inst_list);
+ − 2481
+ − 2482 sp = XSPECIFIER (specifier);
442
+ − 2483 device = DOMAIN_DEVICE (domain);
428
+ − 2484
+ − 2485 if (no_quit)
+ − 2486 /* The instantiate method is allowed to call eval. Since it
+ − 2487 is quite common for this function to get called from somewhere in
+ − 2488 redisplay we need to make sure that quits are ignored. Otherwise
+ − 2489 Fsignal will abort. */
+ − 2490 specbind (Qinhibit_quit, Qt);
+ − 2491
+ − 2492 LIST_LOOP (rest, inst_list)
+ − 2493 {
+ − 2494 Lisp_Object tagged_inst = XCAR (rest);
+ − 2495 Lisp_Object tag_set = XCAR (tagged_inst);
+ − 2496
+ − 2497 if (device_matches_specifier_tag_set_p (device, tag_set))
+ − 2498 {
+ − 2499 Lisp_Object val = XCDR (tagged_inst);
+ − 2500
+ − 2501 if (HAS_SPECMETH_P (sp, instantiate))
+ − 2502 val = call_with_suspended_errors
+ − 2503 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate),
+ − 2504 Qunbound, Qspecifier, errb, 5, specifier,
+ − 2505 matchspec, domain, val, depth);
+ − 2506
+ − 2507 if (!UNBOUNDP (val))
+ − 2508 {
+ − 2509 unbind_to (count, Qnil);
+ − 2510 UNGCPRO;
+ − 2511 return val;
+ − 2512 }
+ − 2513 }
+ − 2514 }
+ − 2515
+ − 2516 unbind_to (count, Qnil);
+ − 2517 UNGCPRO;
+ − 2518 return Qunbound;
+ − 2519 }
+ − 2520
+ − 2521 /* Given a SPECIFIER and a DOMAIN, return a specific instance for that
+ − 2522 specifier. Try to find one by checking the specifier types from most
+ − 2523 specific (buffer) to most general (global). If we find an instance,
+ − 2524 return it. Otherwise return Qunbound. */
+ − 2525
+ − 2526 #define CHECK_INSTANCE_ENTRY(key, matchspec, type) do { \
+ − 2527 Lisp_Object *CIE_inst_list = \
+ − 2528 specifier_get_inst_list (specifier, key, type); \
+ − 2529 if (CIE_inst_list) \
+ − 2530 { \
+ − 2531 Lisp_Object CIE_val = \
+ − 2532 specifier_instance_from_inst_list (specifier, matchspec, \
+ − 2533 domain, *CIE_inst_list, \
+ − 2534 errb, no_quit, depth); \
+ − 2535 if (!UNBOUNDP (CIE_val)) \
+ − 2536 return CIE_val; \
+ − 2537 } \
+ − 2538 } while (0)
+ − 2539
+ − 2540 /* We accept any window, frame or device domain and do our checking
+ − 2541 starting from as specific a locale type as we can determine from the
+ − 2542 domain we are passed and going on up through as many other locale types
+ − 2543 as we can determine. In practice, when called from redisplay the
+ − 2544 arg will usually be a window and occasionally a frame. If
+ − 2545 triggered by a user call, who knows what it will usually be. */
+ − 2546 Lisp_Object
+ − 2547 specifier_instance (Lisp_Object specifier, Lisp_Object matchspec,
578
+ − 2548 Lisp_Object domain, Error_Behavior errb, int no_quit,
428
+ − 2549 int no_fallback, Lisp_Object depth)
+ − 2550 {
+ − 2551 Lisp_Object buffer = Qnil;
+ − 2552 Lisp_Object window = Qnil;
+ − 2553 Lisp_Object frame = Qnil;
+ − 2554 Lisp_Object device = Qnil;
444
+ − 2555 Lisp_Object tag = Qnil; /* #### currently unused */
+ − 2556 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2557
+ − 2558 /* Attempt to determine buffer, window, frame, and device from the
+ − 2559 domain. */
442
+ − 2560 /* #### get image instances out of domains! */
+ − 2561 if (IMAGE_INSTANCEP (domain))
+ − 2562 window = DOMAIN_WINDOW (domain);
+ − 2563 else if (WINDOWP (domain))
428
+ − 2564 window = domain;
+ − 2565 else if (FRAMEP (domain))
+ − 2566 frame = domain;
+ − 2567 else if (DEVICEP (domain))
+ − 2568 device = domain;
+ − 2569 else
442
+ − 2570 /* dmoore writes: [dammit, this should just signal an error or something
+ − 2571 shouldn't it?]
+ − 2572
+ − 2573 No. Errors are handled in Lisp primitives implementation.
428
+ − 2574 Invalid domain is a design error here - kkm. */
+ − 2575 abort ();
+ − 2576
+ − 2577 if (NILP (buffer) && !NILP (window))
444
+ − 2578 buffer = WINDOW_BUFFER (XWINDOW (window));
428
+ − 2579 if (NILP (frame) && !NILP (window))
+ − 2580 frame = XWINDOW (window)->frame;
+ − 2581 if (NILP (device))
+ − 2582 /* frame had better exist; if device is undeterminable, something
+ − 2583 really went wrong. */
444
+ − 2584 device = FRAME_DEVICE (XFRAME (frame));
428
+ − 2585
+ − 2586 /* device had better be determined by now; abort if not. */
444
+ − 2587 tag = DEVICE_CLASS (XDEVICE (device));
428
+ − 2588
+ − 2589 depth = make_int (1 + XINT (depth));
+ − 2590 if (XINT (depth) > 20)
+ − 2591 {
563
+ − 2592 maybe_signal_error (Qstack_overflow,
+ − 2593 "Apparent loop in specifier inheritance",
+ − 2594 Qunbound, Qspecifier, errb);
428
+ − 2595 /* The specification is fucked; at least try the fallback
+ − 2596 (which better not be fucked, because it's not changeable
+ − 2597 from Lisp). */
+ − 2598 depth = Qzero;
+ − 2599 goto do_fallback;
+ − 2600 }
+ − 2601
434
+ − 2602 retry:
428
+ − 2603 /* First see if we can generate one from the window specifiers. */
+ − 2604 if (!NILP (window))
+ − 2605 CHECK_INSTANCE_ENTRY (window, matchspec, LOCALE_WINDOW);
+ − 2606
+ − 2607 /* Next see if we can generate one from the buffer specifiers. */
+ − 2608 if (!NILP (buffer))
+ − 2609 CHECK_INSTANCE_ENTRY (buffer, matchspec, LOCALE_BUFFER);
+ − 2610
+ − 2611 /* Next see if we can generate one from the frame specifiers. */
+ − 2612 if (!NILP (frame))
+ − 2613 CHECK_INSTANCE_ENTRY (frame, matchspec, LOCALE_FRAME);
+ − 2614
+ − 2615 /* If we still haven't succeeded try with the device specifiers. */
+ − 2616 CHECK_INSTANCE_ENTRY (device, matchspec, LOCALE_DEVICE);
+ − 2617
+ − 2618 /* Last and least try the global specifiers. */
+ − 2619 CHECK_INSTANCE_ENTRY (Qglobal, matchspec, LOCALE_GLOBAL);
+ − 2620
434
+ − 2621 do_fallback:
428
+ − 2622 /* We're out of specifiers and we still haven't generated an
+ − 2623 instance. At least try the fallback ... If this fails,
+ − 2624 then we just return Qunbound. */
+ − 2625
+ − 2626 if (no_fallback || NILP (sp->fallback))
+ − 2627 /* I said, I don't want the fallbacks. */
+ − 2628 return Qunbound;
+ − 2629
+ − 2630 if (SPECIFIERP (sp->fallback))
+ − 2631 {
+ − 2632 /* If you introduced loops in the default specifier chain,
+ − 2633 then you're fucked, so you better not do this. */
+ − 2634 specifier = sp->fallback;
+ − 2635 sp = XSPECIFIER (specifier);
+ − 2636 goto retry;
+ − 2637 }
+ − 2638
+ − 2639 assert (CONSP (sp->fallback));
+ − 2640 return specifier_instance_from_inst_list (specifier, matchspec, domain,
+ − 2641 sp->fallback, errb, no_quit,
+ − 2642 depth);
+ − 2643 }
+ − 2644 #undef CHECK_INSTANCE_ENTRY
+ − 2645
+ − 2646 Lisp_Object
+ − 2647 specifier_instance_no_quit (Lisp_Object specifier, Lisp_Object matchspec,
578
+ − 2648 Lisp_Object domain, Error_Behavior errb,
428
+ − 2649 int no_fallback, Lisp_Object depth)
+ − 2650 {
+ − 2651 return specifier_instance (specifier, matchspec, domain, errb,
+ − 2652 1, no_fallback, depth);
+ − 2653 }
+ − 2654
+ − 2655 DEFUN ("specifier-instance", Fspecifier_instance, 1, 4, 0, /*
+ − 2656 Instantiate SPECIFIER (return its value) in DOMAIN.
+ − 2657 If no instance can be generated for this domain, return DEFAULT.
+ − 2658
+ − 2659 DOMAIN should be a window, frame, or device. Other values that are legal
+ − 2660 as a locale (e.g. a buffer) are not valid as a domain because they do not
+ − 2661 provide enough information to identify a particular device (see
+ − 2662 `valid-specifier-domain-p'). DOMAIN defaults to the selected window
+ − 2663 if omitted.
+ − 2664
+ − 2665 "Instantiating" a specifier in a particular domain means determining
+ − 2666 the specifier's "value" in that domain. This is accomplished by
+ − 2667 searching through the specifications in the specifier that correspond
+ − 2668 to all locales that can be derived from the given domain, from specific
+ − 2669 to general. In most cases, the domain is an Emacs window. In that case
+ − 2670 specifications are searched for as follows:
+ − 2671
+ − 2672 1. A specification whose locale is the window itself;
+ − 2673 2. A specification whose locale is the window's buffer;
+ − 2674 3. A specification whose locale is the window's frame;
+ − 2675 4. A specification whose locale is the window's frame's device;
+ − 2676 5. A specification whose locale is 'global.
+ − 2677
+ − 2678 If all of those fail, then the C-code-provided fallback value for
+ − 2679 this specifier is consulted (see `specifier-fallback'). If it is
+ − 2680 an inst-list, then this function attempts to instantiate that list
+ − 2681 just as when a specification is located in the first five steps above.
+ − 2682 If the fallback is a specifier, `specifier-instance' is called
+ − 2683 recursively on this specifier and the return value used. Note,
+ − 2684 however, that if the optional argument NO-FALLBACK is non-nil,
+ − 2685 the fallback value will not be consulted.
+ − 2686
+ − 2687 Note that there may be more than one specification matching a particular
+ − 2688 locale; all such specifications are considered before looking for any
+ − 2689 specifications for more general locales. Any particular specification
+ − 2690 that is found may be rejected because its tag set does not match the
+ − 2691 device being instantiated over, or because the specification is not
+ − 2692 valid for the device of the given domain (e.g. the font or color name
+ − 2693 does not exist for this particular X server).
+ − 2694
+ − 2695 The returned value is dependent on the type of specifier. For example,
+ − 2696 for a font specifier (as returned by the `face-font' function), the returned
+ − 2697 value will be a font-instance object. For glyphs, the returned value
+ − 2698 will be a string, pixmap, or subwindow.
+ − 2699
+ − 2700 See also `specifier-matching-instance'.
+ − 2701 */
+ − 2702 (specifier, domain, default_, no_fallback))
+ − 2703 {
+ − 2704 Lisp_Object instance;
+ − 2705
+ − 2706 CHECK_SPECIFIER (specifier);
+ − 2707 domain = decode_domain (domain);
+ − 2708
+ − 2709 instance = specifier_instance (specifier, Qunbound, domain, ERROR_ME, 0,
+ − 2710 !NILP (no_fallback), Qzero);
+ − 2711 return UNBOUNDP (instance) ? default_ : instance;
+ − 2712 }
+ − 2713
+ − 2714 DEFUN ("specifier-matching-instance", Fspecifier_matching_instance, 2, 5, 0, /*
+ − 2715 Return an instance for SPECIFIER in DOMAIN that matches MATCHSPEC.
+ − 2716 If no instance can be generated for this domain, return DEFAULT.
+ − 2717
+ − 2718 This function is identical to `specifier-instance' except that a
+ − 2719 specification will only be considered if it matches MATCHSPEC.
+ − 2720 The definition of "match", and allowed values for MATCHSPEC, are
+ − 2721 dependent on the particular type of specifier. Here are some examples:
+ − 2722
+ − 2723 -- For chartable (e.g. display table) specifiers, MATCHSPEC should be a
+ − 2724 character, and the specification (a chartable) must give a value for
+ − 2725 that character in order to be considered. This allows you to specify,
+ − 2726 e.g., a buffer-local display table that only gives values for particular
+ − 2727 characters. All other characters are handled as if the buffer-local
+ − 2728 display table is not there. (Chartable specifiers are not yet
+ − 2729 implemented.)
+ − 2730
+ − 2731 -- For font specifiers, MATCHSPEC should be a charset, and the specification
+ − 2732 (a font string) must have a registry that matches the charset's registry.
+ − 2733 (This only makes sense with Mule support.) This makes it easy to choose a
+ − 2734 font that can display a particular character. (This is what redisplay
+ − 2735 does, in fact.)
+ − 2736 */
+ − 2737 (specifier, matchspec, domain, default_, no_fallback))
+ − 2738 {
+ − 2739 Lisp_Object instance;
+ − 2740
+ − 2741 CHECK_SPECIFIER (specifier);
+ − 2742 check_valid_specifier_matchspec (matchspec, XSPECIFIER (specifier)->methods,
+ − 2743 ERROR_ME);
+ − 2744 domain = decode_domain (domain);
+ − 2745
+ − 2746 instance = specifier_instance (specifier, matchspec, domain, ERROR_ME,
+ − 2747 0, !NILP (no_fallback), Qzero);
+ − 2748 return UNBOUNDP (instance) ? default_ : instance;
+ − 2749 }
+ − 2750
+ − 2751 DEFUN ("specifier-instance-from-inst-list", Fspecifier_instance_from_inst_list,
+ − 2752 3, 4, 0, /*
+ − 2753 Attempt to convert a particular inst-list into an instance.
+ − 2754 This attempts to instantiate INST-LIST in the given DOMAIN,
+ − 2755 as if INST-LIST existed in a specification in SPECIFIER. If
+ − 2756 the instantiation fails, DEFAULT is returned. In most circumstances,
+ − 2757 you should not use this function; use `specifier-instance' instead.
+ − 2758 */
+ − 2759 (specifier, domain, inst_list, default_))
+ − 2760 {
+ − 2761 Lisp_Object val = Qunbound;
440
+ − 2762 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2763 struct gcpro gcpro1;
+ − 2764 Lisp_Object built_up_list = Qnil;
+ − 2765
+ − 2766 CHECK_SPECIFIER (specifier);
+ − 2767 check_valid_domain (domain);
+ − 2768 check_valid_inst_list (inst_list, sp->methods, ERROR_ME);
+ − 2769 GCPRO1 (built_up_list);
+ − 2770 built_up_list = build_up_processed_list (specifier, domain, inst_list);
+ − 2771 if (!NILP (built_up_list))
+ − 2772 val = specifier_instance_from_inst_list (specifier, Qunbound, domain,
+ − 2773 built_up_list, ERROR_ME,
+ − 2774 0, Qzero);
+ − 2775 UNGCPRO;
+ − 2776 return UNBOUNDP (val) ? default_ : val;
+ − 2777 }
+ − 2778
442
+ − 2779 DEFUN ("specifier-matching-instance-from-inst-list",
+ − 2780 Fspecifier_matching_instance_from_inst_list,
428
+ − 2781 4, 5, 0, /*
+ − 2782 Attempt to convert a particular inst-list into an instance.
+ − 2783 This attempts to instantiate INST-LIST in the given DOMAIN
+ − 2784 \(as if INST-LIST existed in a specification in SPECIFIER),
+ − 2785 matching the specifications against MATCHSPEC.
+ − 2786
+ − 2787 This function is analogous to `specifier-instance-from-inst-list'
+ − 2788 but allows for specification-matching as in `specifier-matching-instance'.
+ − 2789 See that function for a description of exactly how the matching process
+ − 2790 works.
+ − 2791 */
+ − 2792 (specifier, matchspec, domain, inst_list, default_))
+ − 2793 {
+ − 2794 Lisp_Object val = Qunbound;
440
+ − 2795 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2796 struct gcpro gcpro1;
+ − 2797 Lisp_Object built_up_list = Qnil;
+ − 2798
+ − 2799 CHECK_SPECIFIER (specifier);
+ − 2800 check_valid_specifier_matchspec (matchspec, XSPECIFIER (specifier)->methods,
+ − 2801 ERROR_ME);
+ − 2802 check_valid_domain (domain);
+ − 2803 check_valid_inst_list (inst_list, sp->methods, ERROR_ME);
+ − 2804 GCPRO1 (built_up_list);
+ − 2805 built_up_list = build_up_processed_list (specifier, domain, inst_list);
+ − 2806 if (!NILP (built_up_list))
+ − 2807 val = specifier_instance_from_inst_list (specifier, matchspec, domain,
+ − 2808 built_up_list, ERROR_ME,
+ − 2809 0, Qzero);
+ − 2810 UNGCPRO;
+ − 2811 return UNBOUNDP (val) ? default_ : val;
+ − 2812 }
+ − 2813
+ − 2814
+ − 2815 /************************************************************************/
+ − 2816 /* Caching in the struct window or frame */
+ − 2817 /************************************************************************/
+ − 2818
+ − 2819 /* Either STRUCT_WINDOW_OFFSET or STRUCT_FRAME_OFFSET can be 0 to indicate
+ − 2820 no caching in that sort of object. */
+ − 2821
+ − 2822 /* #### It would be nice if the specifier caching automatically knew
+ − 2823 about specifier fallbacks, so we didn't have to do it ourselves. */
+ − 2824
+ − 2825 void
+ − 2826 set_specifier_caching (Lisp_Object specifier, int struct_window_offset,
+ − 2827 void (*value_changed_in_window)
+ − 2828 (Lisp_Object specifier, struct window *w,
+ − 2829 Lisp_Object oldval),
+ − 2830 int struct_frame_offset,
+ − 2831 void (*value_changed_in_frame)
+ − 2832 (Lisp_Object specifier, struct frame *f,
444
+ − 2833 Lisp_Object oldval),
+ − 2834 int always_recompute)
428
+ − 2835 {
440
+ − 2836 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2837 assert (!GHOST_SPECIFIER_P (sp));
+ − 2838
+ − 2839 if (!sp->caching)
+ − 2840 sp->caching = xnew_and_zero (struct specifier_caching);
+ − 2841 sp->caching->offset_into_struct_window = struct_window_offset;
+ − 2842 sp->caching->value_changed_in_window = value_changed_in_window;
+ − 2843 sp->caching->offset_into_struct_frame = struct_frame_offset;
+ − 2844 sp->caching->value_changed_in_frame = value_changed_in_frame;
444
+ − 2845 sp->caching->always_recompute = always_recompute;
428
+ − 2846 Vcached_specifiers = Fcons (specifier, Vcached_specifiers);
+ − 2847 if (BODILY_SPECIFIER_P (sp))
+ − 2848 GHOST_SPECIFIER(sp)->caching = sp->caching;
+ − 2849 recompute_cached_specifier_everywhere (specifier);
+ − 2850 }
+ − 2851
+ − 2852 static void
+ − 2853 recompute_one_cached_specifier_in_window (Lisp_Object specifier,
+ − 2854 struct window *w)
+ − 2855 {
+ − 2856 Lisp_Object window;
444
+ − 2857 Lisp_Object newval, *location, oldval;
428
+ − 2858
+ − 2859 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier)));
+ − 2860
+ − 2861 XSETWINDOW (window, w);
+ − 2862
+ − 2863 newval = specifier_instance (specifier, Qunbound, window, ERROR_ME_WARN,
+ − 2864 0, 0, Qzero);
+ − 2865 /* If newval ended up Qunbound, then the calling functions
+ − 2866 better be able to deal. If not, set a default so this
+ − 2867 never happens or correct it in the value_changed_in_window
+ − 2868 method. */
+ − 2869 location = (Lisp_Object *)
+ − 2870 ((char *) w + XSPECIFIER (specifier)->caching->offset_into_struct_window);
442
+ − 2871 /* #### What's the point of this check, other than to optimize image
+ − 2872 instance instantiation? Unless you specify a caching instantiate
+ − 2873 method the instantiation that specifier_instance will do will
+ − 2874 always create a new copy. Thus EQ will always fail. Unfortunately
+ − 2875 calling equal is no good either as this doesn't take into account
+ − 2876 things attached to the specifier - for instance strings on
+ − 2877 extents. --andyp */
444
+ − 2878 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute)
428
+ − 2879 {
444
+ − 2880 oldval = *location;
428
+ − 2881 *location = newval;
+ − 2882 (XSPECIFIER (specifier)->caching->value_changed_in_window)
+ − 2883 (specifier, w, oldval);
+ − 2884 }
+ − 2885 }
+ − 2886
+ − 2887 static void
+ − 2888 recompute_one_cached_specifier_in_frame (Lisp_Object specifier,
+ − 2889 struct frame *f)
+ − 2890 {
+ − 2891 Lisp_Object frame;
444
+ − 2892 Lisp_Object newval, *location, oldval;
428
+ − 2893
+ − 2894 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier)));
+ − 2895
+ − 2896 XSETFRAME (frame, f);
+ − 2897
+ − 2898 newval = specifier_instance (specifier, Qunbound, frame, ERROR_ME_WARN,
+ − 2899 0, 0, Qzero);
+ − 2900 /* If newval ended up Qunbound, then the calling functions
+ − 2901 better be able to deal. If not, set a default so this
+ − 2902 never happens or correct it in the value_changed_in_frame
+ − 2903 method. */
+ − 2904 location = (Lisp_Object *)
+ − 2905 ((char *) f + XSPECIFIER (specifier)->caching->offset_into_struct_frame);
444
+ − 2906 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute)
428
+ − 2907 {
444
+ − 2908 oldval = *location;
428
+ − 2909 *location = newval;
+ − 2910 (XSPECIFIER (specifier)->caching->value_changed_in_frame)
+ − 2911 (specifier, f, oldval);
+ − 2912 }
+ − 2913 }
+ − 2914
+ − 2915 void
+ − 2916 recompute_all_cached_specifiers_in_window (struct window *w)
+ − 2917 {
+ − 2918 Lisp_Object rest;
+ − 2919
+ − 2920 LIST_LOOP (rest, Vcached_specifiers)
+ − 2921 {
+ − 2922 Lisp_Object specifier = XCAR (rest);
+ − 2923 if (XSPECIFIER (specifier)->caching->offset_into_struct_window)
+ − 2924 recompute_one_cached_specifier_in_window (specifier, w);
+ − 2925 }
+ − 2926 }
+ − 2927
+ − 2928 void
+ − 2929 recompute_all_cached_specifiers_in_frame (struct frame *f)
+ − 2930 {
+ − 2931 Lisp_Object rest;
+ − 2932
+ − 2933 LIST_LOOP (rest, Vcached_specifiers)
+ − 2934 {
+ − 2935 Lisp_Object specifier = XCAR (rest);
+ − 2936 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame)
+ − 2937 recompute_one_cached_specifier_in_frame (specifier, f);
+ − 2938 }
+ − 2939 }
+ − 2940
+ − 2941 static int
+ − 2942 recompute_cached_specifier_everywhere_mapfun (struct window *w,
+ − 2943 void *closure)
+ − 2944 {
+ − 2945 Lisp_Object specifier = Qnil;
+ − 2946
+ − 2947 VOID_TO_LISP (specifier, closure);
+ − 2948 recompute_one_cached_specifier_in_window (specifier, w);
+ − 2949 return 0;
+ − 2950 }
+ − 2951
+ − 2952 static void
+ − 2953 recompute_cached_specifier_everywhere (Lisp_Object specifier)
+ − 2954 {
+ − 2955 Lisp_Object frmcons, devcons, concons;
+ − 2956
+ − 2957 specifier = bodily_specifier (specifier);
+ − 2958
+ − 2959 if (!XSPECIFIER (specifier)->caching)
+ − 2960 return;
+ − 2961
+ − 2962 if (XSPECIFIER (specifier)->caching->offset_into_struct_window)
+ − 2963 {
+ − 2964 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
+ − 2965 map_windows (XFRAME (XCAR (frmcons)),
+ − 2966 recompute_cached_specifier_everywhere_mapfun,
+ − 2967 LISP_TO_VOID (specifier));
+ − 2968 }
+ − 2969
+ − 2970 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame)
+ − 2971 {
+ − 2972 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
+ − 2973 recompute_one_cached_specifier_in_frame (specifier,
+ − 2974 XFRAME (XCAR (frmcons)));
+ − 2975 }
+ − 2976 }
+ − 2977
+ − 2978 DEFUN ("set-specifier-dirty-flag", Fset_specifier_dirty_flag, 1, 1, 0, /*
+ − 2979 Force recomputation of any caches associated with SPECIFIER.
+ − 2980 Note that this automatically happens whenever you change a specification
+ − 2981 in SPECIFIER; you do not have to call this function then.
+ − 2982 One example of where this function is useful is when you have a
+ − 2983 toolbar button whose `active-p' field is an expression to be
+ − 2984 evaluated. Calling `set-specifier-dirty-flag' on the
+ − 2985 toolbar specifier will force the `active-p' fields to be
+ − 2986 recomputed.
+ − 2987 */
+ − 2988 (specifier))
+ − 2989 {
+ − 2990 CHECK_SPECIFIER (specifier);
+ − 2991 recompute_cached_specifier_everywhere (specifier);
+ − 2992 return Qnil;
+ − 2993 }
+ − 2994
+ − 2995
+ − 2996 /************************************************************************/
+ − 2997 /* Generic specifier type */
+ − 2998 /************************************************************************/
+ − 2999
+ − 3000 DEFINE_SPECIFIER_TYPE (generic);
+ − 3001
+ − 3002 #if 0
+ − 3003
+ − 3004 /* This is the string that used to be in `generic-specifier-p'.
+ − 3005 The idea is good, but it doesn't quite work in the form it's
+ − 3006 in. (One major problem is that validating an instantiator
+ − 3007 is supposed to require only that the specifier type is passed,
+ − 3008 while with this approach the actual specifier is needed.)
+ − 3009
+ − 3010 What really needs to be done is to write a function
+ − 3011 `make-specifier-type' that creates new specifier types.
442
+ − 3012
+ − 3013 #### [I'll look into this for 19.14.] Well, sometime. (Currently
+ − 3014 May 2000, 21.2 is in development. 19.14 was released in June 1996.) */
428
+ − 3015
+ − 3016 "A generic specifier is a generalized kind of specifier with user-defined\n"
+ − 3017 "semantics. The instantiator can be any kind of Lisp object, and the\n"
+ − 3018 "instance computed from it is likewise any kind of Lisp object. The\n"
+ − 3019 "SPECIFIER-DATA should be an alist of methods governing how the specifier\n"
+ − 3020 "works. All methods are optional, and reasonable default methods will be\n"
+ − 3021 "provided. Currently there are two defined methods: 'instantiate and\n"
+ − 3022 "'validate.\n"
+ − 3023 "\n"
+ − 3024 "'instantiate specifies how to do the instantiation; if omitted, the\n"
+ − 3025 "instantiator itself is simply returned as the instance. The method\n"
+ − 3026 "should be a function that accepts three parameters (a specifier, the\n"
+ − 3027 "instantiator that matched the domain being instantiated over, and that\n"
+ − 3028 "domain), and should return a one-element list containing the instance,\n"
+ − 3029 "or nil if no instance exists. Note that the domain passed to this function\n"
+ − 3030 "is the domain being instantiated over, which may not be the same as the\n"
+ − 3031 "locale contained in the specification corresponding to the instantiator\n"
+ − 3032 "(for example, the domain being instantiated over could be a window, but\n"
+ − 3033 "the locale corresponding to the passed instantiator could be the window's\n"
+ − 3034 "buffer or frame).\n"
+ − 3035 "\n"
+ − 3036 "'validate specifies whether a given instantiator is valid; if omitted,\n"
+ − 3037 "all instantiators are considered valid. It should be a function of\n"
+ − 3038 "two arguments: an instantiator and a flag CAN-SIGNAL-ERROR. If this\n"
+ − 3039 "flag is false, the function must simply return t or nil indicating\n"
+ − 3040 "whether the instantiator is valid. If this flag is true, the function\n"
+ − 3041 "is free to signal an error if it encounters an invalid instantiator\n"
+ − 3042 "(this can be useful for issuing a specific error about exactly why the\n"
+ − 3043 "instantiator is valid). It can also return nil to indicate an invalid\n"
+ − 3044 "instantiator; in this case, a general error will be signalled."
+ − 3045
+ − 3046 #endif /* 0 */
+ − 3047
+ − 3048 DEFUN ("generic-specifier-p", Fgeneric_specifier_p, 1, 1, 0, /*
+ − 3049 Return non-nil if OBJECT is a generic specifier.
+ − 3050
442
+ − 3051 See `make-generic-specifier' for a description of possible generic
+ − 3052 instantiators.
428
+ − 3053 */
+ − 3054 (object))
+ − 3055 {
+ − 3056 return GENERIC_SPECIFIERP (object) ? Qt : Qnil;
+ − 3057 }
+ − 3058
+ − 3059
+ − 3060 /************************************************************************/
+ − 3061 /* Integer specifier type */
+ − 3062 /************************************************************************/
+ − 3063
+ − 3064 DEFINE_SPECIFIER_TYPE (integer);
+ − 3065
+ − 3066 static void
+ − 3067 integer_validate (Lisp_Object instantiator)
+ − 3068 {
+ − 3069 CHECK_INT (instantiator);
+ − 3070 }
+ − 3071
+ − 3072 DEFUN ("integer-specifier-p", Finteger_specifier_p, 1, 1, 0, /*
+ − 3073 Return non-nil if OBJECT is an integer specifier.
442
+ − 3074
+ − 3075 See `make-integer-specifier' for a description of possible integer
+ − 3076 instantiators.
428
+ − 3077 */
+ − 3078 (object))
+ − 3079 {
+ − 3080 return INTEGER_SPECIFIERP (object) ? Qt : Qnil;
+ − 3081 }
+ − 3082
+ − 3083 /************************************************************************/
+ − 3084 /* Non-negative-integer specifier type */
+ − 3085 /************************************************************************/
+ − 3086
+ − 3087 DEFINE_SPECIFIER_TYPE (natnum);
+ − 3088
+ − 3089 static void
+ − 3090 natnum_validate (Lisp_Object instantiator)
+ − 3091 {
+ − 3092 CHECK_NATNUM (instantiator);
+ − 3093 }
+ − 3094
+ − 3095 DEFUN ("natnum-specifier-p", Fnatnum_specifier_p, 1, 1, 0, /*
+ − 3096 Return non-nil if OBJECT is a natnum (non-negative-integer) specifier.
442
+ − 3097
+ − 3098 See `make-natnum-specifier' for a description of possible natnum
+ − 3099 instantiators.
428
+ − 3100 */
+ − 3101 (object))
+ − 3102 {
+ − 3103 return NATNUM_SPECIFIERP (object) ? Qt : Qnil;
+ − 3104 }
+ − 3105
+ − 3106 /************************************************************************/
+ − 3107 /* Boolean specifier type */
+ − 3108 /************************************************************************/
+ − 3109
+ − 3110 DEFINE_SPECIFIER_TYPE (boolean);
+ − 3111
+ − 3112 static void
+ − 3113 boolean_validate (Lisp_Object instantiator)
+ − 3114 {
+ − 3115 if (!EQ (instantiator, Qt) && !EQ (instantiator, Qnil))
563
+ − 3116 invalid_constant ("Must be t or nil", instantiator);
428
+ − 3117 }
+ − 3118
+ − 3119 DEFUN ("boolean-specifier-p", Fboolean_specifier_p, 1, 1, 0, /*
+ − 3120 Return non-nil if OBJECT is a boolean specifier.
442
+ − 3121
+ − 3122 See `make-boolean-specifier' for a description of possible boolean
+ − 3123 instantiators.
428
+ − 3124 */
+ − 3125 (object))
+ − 3126 {
+ − 3127 return BOOLEAN_SPECIFIERP (object) ? Qt : Qnil;
+ − 3128 }
+ − 3129
+ − 3130 /************************************************************************/
+ − 3131 /* Display table specifier type */
+ − 3132 /************************************************************************/
+ − 3133
+ − 3134 DEFINE_SPECIFIER_TYPE (display_table);
+ − 3135
442
+ − 3136 #define VALID_SINGLE_DISPTABLE_INSTANTIATOR_P(instantiator) \
+ − 3137 (VECTORP (instantiator) \
+ − 3138 || (CHAR_TABLEP (instantiator) \
+ − 3139 && (XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_CHAR \
+ − 3140 || XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_GENERIC)) \
428
+ − 3141 || RANGE_TABLEP (instantiator))
+ − 3142
+ − 3143 static void
+ − 3144 display_table_validate (Lisp_Object instantiator)
+ − 3145 {
+ − 3146 if (NILP (instantiator))
+ − 3147 /* OK */
+ − 3148 ;
+ − 3149 else if (CONSP (instantiator))
+ − 3150 {
+ − 3151 Lisp_Object tail;
+ − 3152 EXTERNAL_LIST_LOOP (tail, instantiator)
+ − 3153 {
+ − 3154 Lisp_Object car = XCAR (tail);
+ − 3155 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (car))
+ − 3156 goto lose;
+ − 3157 }
+ − 3158 }
+ − 3159 else
+ − 3160 {
+ − 3161 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (instantiator))
+ − 3162 {
+ − 3163 lose:
442
+ − 3164 dead_wrong_type_argument
+ − 3165 (display_table_specifier_methods->predicate_symbol,
428
+ − 3166 instantiator);
+ − 3167 }
+ − 3168 }
+ − 3169 }
+ − 3170
+ − 3171 DEFUN ("display-table-specifier-p", Fdisplay_table_specifier_p, 1, 1, 0, /*
+ − 3172 Return non-nil if OBJECT is a display-table specifier.
442
+ − 3173
+ − 3174 See `current-display-table' for a description of possible display-table
+ − 3175 instantiators.
428
+ − 3176 */
+ − 3177 (object))
+ − 3178 {
+ − 3179 return DISPLAYTABLE_SPECIFIERP (object) ? Qt : Qnil;
+ − 3180 }
+ − 3181
+ − 3182
+ − 3183 /************************************************************************/
+ − 3184 /* Initialization */
+ − 3185 /************************************************************************/
+ − 3186
+ − 3187 void
+ − 3188 syms_of_specifier (void)
+ − 3189 {
442
+ − 3190 INIT_LRECORD_IMPLEMENTATION (specifier);
+ − 3191
+ − 3192 DEFSYMBOL (Qspecifierp);
+ − 3193
+ − 3194 DEFSYMBOL (Qconsole_type);
+ − 3195 DEFSYMBOL (Qdevice_class);
+ − 3196
+ − 3197 /* specifier types defined in general.c. */
428
+ − 3198
+ − 3199 DEFSUBR (Fvalid_specifier_type_p);
+ − 3200 DEFSUBR (Fspecifier_type_list);
+ − 3201 DEFSUBR (Fmake_specifier);
+ − 3202 DEFSUBR (Fspecifierp);
+ − 3203 DEFSUBR (Fspecifier_type);
+ − 3204
+ − 3205 DEFSUBR (Fvalid_specifier_locale_p);
+ − 3206 DEFSUBR (Fvalid_specifier_domain_p);
+ − 3207 DEFSUBR (Fvalid_specifier_locale_type_p);
+ − 3208 DEFSUBR (Fspecifier_locale_type_from_locale);
+ − 3209
+ − 3210 DEFSUBR (Fvalid_specifier_tag_p);
+ − 3211 DEFSUBR (Fvalid_specifier_tag_set_p);
+ − 3212 DEFSUBR (Fcanonicalize_tag_set);
+ − 3213 DEFSUBR (Fdevice_matches_specifier_tag_set_p);
+ − 3214 DEFSUBR (Fdefine_specifier_tag);
+ − 3215 DEFSUBR (Fdevice_matching_specifier_tag_list);
+ − 3216 DEFSUBR (Fspecifier_tag_list);
+ − 3217 DEFSUBR (Fspecifier_tag_predicate);
+ − 3218
+ − 3219 DEFSUBR (Fcheck_valid_instantiator);
+ − 3220 DEFSUBR (Fvalid_instantiator_p);
+ − 3221 DEFSUBR (Fcheck_valid_inst_list);
+ − 3222 DEFSUBR (Fvalid_inst_list_p);
+ − 3223 DEFSUBR (Fcheck_valid_spec_list);
+ − 3224 DEFSUBR (Fvalid_spec_list_p);
+ − 3225 DEFSUBR (Fadd_spec_to_specifier);
+ − 3226 DEFSUBR (Fadd_spec_list_to_specifier);
+ − 3227 DEFSUBR (Fspecifier_spec_list);
+ − 3228 DEFSUBR (Fspecifier_specs);
+ − 3229 DEFSUBR (Fremove_specifier);
+ − 3230 DEFSUBR (Fcopy_specifier);
+ − 3231
+ − 3232 DEFSUBR (Fcheck_valid_specifier_matchspec);
+ − 3233 DEFSUBR (Fvalid_specifier_matchspec_p);
+ − 3234 DEFSUBR (Fspecifier_fallback);
+ − 3235 DEFSUBR (Fspecifier_instance);
+ − 3236 DEFSUBR (Fspecifier_matching_instance);
+ − 3237 DEFSUBR (Fspecifier_instance_from_inst_list);
+ − 3238 DEFSUBR (Fspecifier_matching_instance_from_inst_list);
+ − 3239 DEFSUBR (Fset_specifier_dirty_flag);
+ − 3240
+ − 3241 DEFSUBR (Fgeneric_specifier_p);
+ − 3242 DEFSUBR (Finteger_specifier_p);
+ − 3243 DEFSUBR (Fnatnum_specifier_p);
+ − 3244 DEFSUBR (Fboolean_specifier_p);
+ − 3245 DEFSUBR (Fdisplay_table_specifier_p);
+ − 3246
+ − 3247 /* Symbols pertaining to specifier creation. Specifiers are created
+ − 3248 in the syms_of() functions. */
+ − 3249
+ − 3250 /* locales are defined in general.c. */
+ − 3251
442
+ − 3252 /* some how-to-add flags in general.c. */
+ − 3253 DEFSYMBOL (Qremove_tag_set_prepend);
+ − 3254 DEFSYMBOL (Qremove_tag_set_append);
+ − 3255 DEFSYMBOL (Qremove_locale);
+ − 3256 DEFSYMBOL (Qremove_locale_type);
428
+ − 3257 }
+ − 3258
+ − 3259 void
+ − 3260 specifier_type_create (void)
+ − 3261 {
+ − 3262 the_specifier_type_entry_dynarr = Dynarr_new (specifier_type_entry);
452
+ − 3263 dump_add_root_struct_ptr (&the_specifier_type_entry_dynarr, &sted_description);
428
+ − 3264
+ − 3265 Vspecifier_type_list = Qnil;
+ − 3266 staticpro (&Vspecifier_type_list);
+ − 3267
+ − 3268 INITIALIZE_SPECIFIER_TYPE (generic, "generic", "generic-specifier-p");
+ − 3269
+ − 3270 INITIALIZE_SPECIFIER_TYPE (integer, "integer", "integer-specifier-p");
+ − 3271
+ − 3272 SPECIFIER_HAS_METHOD (integer, validate);
+ − 3273
+ − 3274 INITIALIZE_SPECIFIER_TYPE (natnum, "natnum", "natnum-specifier-p");
+ − 3275
+ − 3276 SPECIFIER_HAS_METHOD (natnum, validate);
+ − 3277
+ − 3278 INITIALIZE_SPECIFIER_TYPE (boolean, "boolean", "boolean-specifier-p");
+ − 3279
+ − 3280 SPECIFIER_HAS_METHOD (boolean, validate);
+ − 3281
442
+ − 3282 INITIALIZE_SPECIFIER_TYPE (display_table, "display-table",
+ − 3283 "display-table-p");
428
+ − 3284
+ − 3285 SPECIFIER_HAS_METHOD (display_table, validate);
+ − 3286 }
+ − 3287
+ − 3288 void
+ − 3289 reinit_specifier_type_create (void)
+ − 3290 {
+ − 3291 REINITIALIZE_SPECIFIER_TYPE (generic);
+ − 3292 REINITIALIZE_SPECIFIER_TYPE (integer);
+ − 3293 REINITIALIZE_SPECIFIER_TYPE (natnum);
+ − 3294 REINITIALIZE_SPECIFIER_TYPE (boolean);
+ − 3295 REINITIALIZE_SPECIFIER_TYPE (display_table);
+ − 3296 }
+ − 3297
+ − 3298 void
+ − 3299 vars_of_specifier (void)
+ − 3300 {
+ − 3301 Vcached_specifiers = Qnil;
+ − 3302 staticpro (&Vcached_specifiers);
+ − 3303
+ − 3304 /* Do NOT mark through this, or specifiers will never be GC'd.
+ − 3305 This is the same deal as for weak hash tables. */
+ − 3306 Vall_specifiers = Qnil;
452
+ − 3307 dump_add_weak_object_chain (&Vall_specifiers);
428
+ − 3308
+ − 3309 Vuser_defined_tags = Qnil;
+ − 3310 staticpro (&Vuser_defined_tags);
+ − 3311
+ − 3312 Vunlock_ghost_specifiers = Qnil;
+ − 3313 staticpro (&Vunlock_ghost_specifiers);
+ − 3314 }
