428
+ − 1 /* Specifier implementation
+ − 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
793
+ − 3 Copyright (C) 1995, 1996, 2002 Ben Wing.
428
+ − 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"
800
+ − 35 #include "chartab.h"
872
+ − 36 #include "device-impl.h"
428
+ − 37 #include "frame.h"
800
+ − 38 #include "glyphs.h"
428
+ − 39 #include "opaque.h"
800
+ − 40 #include "rangetab.h"
428
+ − 41 #include "specifier.h"
+ − 42 #include "window.h"
+ − 43
+ − 44 Lisp_Object Qspecifierp;
442
+ − 45 Lisp_Object Qremove_tag_set_prepend, Qremove_tag_set_append;
+ − 46 Lisp_Object Qremove_locale, Qremove_locale_type;
428
+ − 47
+ − 48 Lisp_Object Qconsole_type, Qdevice_class;
+ − 49
+ − 50 static Lisp_Object Vuser_defined_tags;
+ − 51
+ − 52 typedef struct specifier_type_entry specifier_type_entry;
+ − 53 struct specifier_type_entry
+ − 54 {
+ − 55 Lisp_Object symbol;
+ − 56 struct specifier_methods *meths;
+ − 57 };
+ − 58
+ − 59 typedef struct
+ − 60 {
+ − 61 Dynarr_declare (specifier_type_entry);
+ − 62 } specifier_type_entry_dynarr;
+ − 63
+ − 64 static specifier_type_entry_dynarr *the_specifier_type_entry_dynarr;
+ − 65
1204
+ − 66 static const struct memory_description ste_description_1[] = {
440
+ − 67 { XD_LISP_OBJECT, offsetof (specifier_type_entry, symbol) },
442
+ − 68 { XD_STRUCT_PTR, offsetof (specifier_type_entry, meths), 1,
+ − 69 &specifier_methods_description },
428
+ − 70 { XD_END }
+ − 71 };
+ − 72
1204
+ − 73 static const struct sized_memory_description ste_description = {
440
+ − 74 sizeof (specifier_type_entry),
428
+ − 75 ste_description_1
+ − 76 };
+ − 77
1204
+ − 78 static const struct memory_description sted_description_1[] = {
440
+ − 79 XD_DYNARR_DESC (specifier_type_entry_dynarr, &ste_description),
428
+ − 80 { XD_END }
+ − 81 };
+ − 82
1204
+ − 83 static const struct sized_memory_description sted_description = {
440
+ − 84 sizeof (specifier_type_entry_dynarr),
428
+ − 85 sted_description_1
+ − 86 };
+ − 87
+ − 88 static Lisp_Object Vspecifier_type_list;
+ − 89
+ − 90 static Lisp_Object Vcached_specifiers;
+ − 91 /* Do NOT mark through this, or specifiers will never be GC'd. */
+ − 92 static Lisp_Object Vall_specifiers;
+ − 93
+ − 94 static Lisp_Object Vunlock_ghost_specifiers;
+ − 95
+ − 96 /* #### The purpose of this is to check for inheritance loops
+ − 97 in specifiers that can inherit from other specifiers, but it's
+ − 98 not yet implemented.
+ − 99
+ − 100 #### Look into this for 19.14. */
+ − 101 /* static Lisp_Object_dynarr current_specifiers; */
+ − 102
+ − 103 static void recompute_cached_specifier_everywhere (Lisp_Object specifier);
+ − 104
+ − 105 EXFUN (Fspecifier_specs, 4);
+ − 106 EXFUN (Fremove_specifier, 4);
+ − 107
+ − 108
+ − 109 /************************************************************************/
+ − 110 /* Specifier object methods */
+ − 111 /************************************************************************/
+ − 112
+ − 113 /* Remove dead objects from the specified assoc list. */
+ − 114
+ − 115 static Lisp_Object
+ − 116 cleanup_assoc_list (Lisp_Object list)
+ − 117 {
+ − 118 Lisp_Object loop, prev, retval;
+ − 119
+ − 120 loop = retval = list;
+ − 121 prev = Qnil;
+ − 122
+ − 123 while (!NILP (loop))
+ − 124 {
+ − 125 Lisp_Object entry = XCAR (loop);
+ − 126 Lisp_Object key = XCAR (entry);
+ − 127
+ − 128 /* remember, dead windows can become alive again. */
+ − 129 if (!WINDOWP (key) && object_dead_p (key))
+ − 130 {
+ − 131 if (NILP (prev))
+ − 132 {
+ − 133 /* Removing the head. */
+ − 134 retval = XCDR (retval);
+ − 135 }
+ − 136 else
+ − 137 {
+ − 138 Fsetcdr (prev, XCDR (loop));
+ − 139 }
+ − 140 }
+ − 141 else
+ − 142 prev = loop;
+ − 143
+ − 144 loop = XCDR (loop);
+ − 145 }
+ − 146
+ − 147 return retval;
+ − 148 }
+ − 149
+ − 150 /* Remove dead objects from the various lists so that they
+ − 151 don't keep getting marked as long as this specifier exists and
+ − 152 therefore wasting memory. */
+ − 153
+ − 154 void
+ − 155 cleanup_specifiers (void)
+ − 156 {
+ − 157 Lisp_Object rest;
+ − 158
+ − 159 for (rest = Vall_specifiers;
+ − 160 !NILP (rest);
+ − 161 rest = XSPECIFIER (rest)->next_specifier)
+ − 162 {
440
+ − 163 Lisp_Specifier *sp = XSPECIFIER (rest);
428
+ − 164 /* This effectively changes the specifier specs.
+ − 165 However, there's no need to call
+ − 166 recompute_cached_specifier_everywhere() or the
+ − 167 after-change methods because the only specs we
+ − 168 are removing are for dead objects, and they can
+ − 169 never have any effect on the specifier values:
+ − 170 specifiers can only be instantiated over live
+ − 171 objects, and you can't derive a dead object
+ − 172 from a live one. */
+ − 173 sp->device_specs = cleanup_assoc_list (sp->device_specs);
+ − 174 sp->frame_specs = cleanup_assoc_list (sp->frame_specs);
+ − 175 sp->buffer_specs = cleanup_assoc_list (sp->buffer_specs);
+ − 176 /* windows are handled specially because dead windows
+ − 177 can be resurrected */
+ − 178 }
+ − 179 }
+ − 180
+ − 181 void
+ − 182 kill_specifier_buffer_locals (Lisp_Object buffer)
+ − 183 {
+ − 184 Lisp_Object rest;
+ − 185
+ − 186 for (rest = Vall_specifiers;
+ − 187 !NILP (rest);
+ − 188 rest = XSPECIFIER (rest)->next_specifier)
+ − 189 {
440
+ − 190 Lisp_Specifier *sp = XSPECIFIER (rest);
428
+ − 191
+ − 192 /* Make sure we're actually going to be changing something.
+ − 193 Fremove_specifier() always calls
+ − 194 recompute_cached_specifier_everywhere() (#### but should
+ − 195 be smarter about this). */
+ − 196 if (!NILP (assq_no_quit (buffer, sp->buffer_specs)))
+ − 197 Fremove_specifier (rest, buffer, Qnil, Qnil);
+ − 198 }
+ − 199 }
+ − 200
+ − 201 static Lisp_Object
+ − 202 mark_specifier (Lisp_Object obj)
+ − 203 {
440
+ − 204 Lisp_Specifier *specifier = XSPECIFIER (obj);
428
+ − 205
+ − 206 mark_object (specifier->global_specs);
+ − 207 mark_object (specifier->device_specs);
+ − 208 mark_object (specifier->frame_specs);
+ − 209 mark_object (specifier->window_specs);
+ − 210 mark_object (specifier->buffer_specs);
+ − 211 mark_object (specifier->magic_parent);
+ − 212 mark_object (specifier->fallback);
+ − 213 if (!GHOST_SPECIFIER_P (XSPECIFIER (obj)))
+ − 214 MAYBE_SPECMETH (specifier, mark, (obj));
+ − 215 return Qnil;
+ − 216 }
+ − 217
+ − 218 /* The idea here is that the specifier specs point to locales
+ − 219 (windows, buffers, frames, and devices), and we want to make sure
+ − 220 that the specs disappear automatically when the associated locale
+ − 221 is no longer in use. For all but windows, "no longer in use"
+ − 222 corresponds exactly to when the object is deleted (non-deleted
+ − 223 objects are always held permanently in special lists, and deleted
+ − 224 objects are never on these lists and never reusable). To handle
+ − 225 this, we just have cleanup_specifiers() called periodically
+ − 226 (at the beginning of garbage collection); it removes all dead
+ − 227 objects.
+ − 228
+ − 229 For windows, however, it's trickier because dead objects can be
+ − 230 converted to live ones again if the dead object is in a window
+ − 231 configuration. Therefore, for windows, "no longer in use"
+ − 232 corresponds to when the window object is garbage-collected.
+ − 233 We now use weak lists for this purpose.
+ − 234
+ − 235 */
+ − 236
+ − 237 void
+ − 238 prune_specifiers (void)
+ − 239 {
+ − 240 Lisp_Object rest, prev = Qnil;
+ − 241
+ − 242 for (rest = Vall_specifiers;
+ − 243 !NILP (rest);
+ − 244 rest = XSPECIFIER (rest)->next_specifier)
+ − 245 {
+ − 246 if (! marked_p (rest))
+ − 247 {
440
+ − 248 Lisp_Specifier* sp = XSPECIFIER (rest);
428
+ − 249 /* A bit of assertion that we're removing both parts of the
+ − 250 magic one altogether */
+ − 251 assert (!MAGIC_SPECIFIER_P(sp)
+ − 252 || (BODILY_SPECIFIER_P(sp) && marked_p (sp->fallback))
+ − 253 || (GHOST_SPECIFIER_P(sp) && marked_p (sp->magic_parent)));
+ − 254 /* This specifier is garbage. Remove it from the list. */
+ − 255 if (NILP (prev))
+ − 256 Vall_specifiers = sp->next_specifier;
+ − 257 else
+ − 258 XSPECIFIER (prev)->next_specifier = sp->next_specifier;
+ − 259 }
+ − 260 else
+ − 261 prev = rest;
+ − 262 }
+ − 263 }
+ − 264
+ − 265 static void
+ − 266 print_specifier (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+ − 267 {
440
+ − 268 Lisp_Specifier *sp = XSPECIFIER (obj);
428
+ − 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
800
+ − 276 write_fmt_string (printcharfun, "#<%s-specifier global=", sp->methods->name);
872
+ − 277 #if 0
+ − 278 /* #### Not obvious this is useful, and overrides user settings; if we
+ − 279 resurrect this, create variables like `print-specifier-length' so it
+ − 280 can be controlled. */
428
+ − 281 specbind (Qprint_string_length, make_int (100));
+ − 282 specbind (Qprint_length, make_int (5));
872
+ − 283 #endif
428
+ − 284 the_specs = Fspecifier_specs (obj, Qglobal, Qnil, Qnil);
+ − 285 if (NILP (the_specs))
+ − 286 /* there are no global specs */
826
+ − 287 write_c_string (printcharfun, "<unspecified>");
428
+ − 288 else
+ − 289 print_internal (the_specs, printcharfun, 1);
+ − 290 if (!NILP (sp->fallback))
+ − 291 {
800
+ − 292 write_fmt_string_lisp (printcharfun, " fallback=%S", 1, sp->fallback);
428
+ − 293 }
771
+ − 294 unbind_to (count);
800
+ − 295 write_fmt_string (printcharfun, " 0x%x>", sp->header.uid);
428
+ − 296 }
+ − 297
+ − 298 static void
+ − 299 finalize_specifier (void *header, int for_disksave)
+ − 300 {
440
+ − 301 Lisp_Specifier *sp = (Lisp_Specifier *) header;
428
+ − 302 /* don't be snafued by the disksave finalization. */
+ − 303 if (!for_disksave && !GHOST_SPECIFIER_P(sp) && sp->caching)
+ − 304 {
+ − 305 xfree (sp->caching);
+ − 306 sp->caching = 0;
+ − 307 }
+ − 308 }
+ − 309
+ − 310 static int
+ − 311 specifier_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
+ − 312 {
440
+ − 313 Lisp_Specifier *s1 = XSPECIFIER (obj1);
+ − 314 Lisp_Specifier *s2 = XSPECIFIER (obj2);
428
+ − 315 int retval;
+ − 316 Lisp_Object old_inhibit_quit = Vinhibit_quit;
+ − 317
+ − 318 /* This function can be called from within redisplay.
+ − 319 internal_equal can trigger a quit. That leads to Bad Things. */
+ − 320 Vinhibit_quit = Qt;
+ − 321
+ − 322 depth++;
+ − 323 retval =
+ − 324 (s1->methods == s2->methods &&
+ − 325 internal_equal (s1->global_specs, s2->global_specs, depth) &&
+ − 326 internal_equal (s1->device_specs, s2->device_specs, depth) &&
+ − 327 internal_equal (s1->frame_specs, s2->frame_specs, depth) &&
+ − 328 internal_equal (s1->window_specs, s2->window_specs, depth) &&
+ − 329 internal_equal (s1->buffer_specs, s2->buffer_specs, depth) &&
+ − 330 internal_equal (s1->fallback, s2->fallback, depth));
+ − 331
+ − 332 if (retval && HAS_SPECMETH_P (s1, equal))
+ − 333 retval = SPECMETH (s1, equal, (obj1, obj2, depth - 1));
+ − 334
+ − 335 Vinhibit_quit = old_inhibit_quit;
+ − 336 return retval;
+ − 337 }
+ − 338
+ − 339 static unsigned long
+ − 340 specifier_hash (Lisp_Object obj, int depth)
+ − 341 {
440
+ − 342 Lisp_Specifier *s = XSPECIFIER (obj);
428
+ − 343
+ − 344 /* specifier hashing is a bit problematic because there are so
+ − 345 many places where data can be stored. We pick what are perhaps
+ − 346 the most likely places where interesting stuff will be. */
+ − 347 return HASH5 ((HAS_SPECMETH_P (s, hash) ?
+ − 348 SPECMETH (s, hash, (obj, depth)) : 0),
+ − 349 (unsigned long) s->methods,
+ − 350 internal_hash (s->global_specs, depth + 1),
+ − 351 internal_hash (s->frame_specs, depth + 1),
+ − 352 internal_hash (s->buffer_specs, depth + 1));
+ − 353 }
+ − 354
665
+ − 355 inline static Bytecount
+ − 356 aligned_sizeof_specifier (Bytecount specifier_type_specific_size)
456
+ − 357 {
826
+ − 358 return MAX_ALIGN_SIZE (offsetof (Lisp_Specifier, data)
+ − 359 + specifier_type_specific_size);
456
+ − 360 }
+ − 361
665
+ − 362 static Bytecount
442
+ − 363 sizeof_specifier (const void *header)
428
+ − 364 {
456
+ − 365 const Lisp_Specifier *p = (const Lisp_Specifier *) header;
+ − 366 return aligned_sizeof_specifier (GHOST_SPECIFIER_P (p)
+ − 367 ? 0
+ − 368 : p->methods->extra_data_size);
428
+ − 369 }
+ − 370
1204
+ − 371 static const struct memory_description specifier_methods_description_1[] = {
440
+ − 372 { XD_LISP_OBJECT, offsetof (struct specifier_methods, predicate_symbol) },
428
+ − 373 { XD_END }
+ − 374 };
+ − 375
1204
+ − 376 const struct sized_memory_description specifier_methods_description = {
440
+ − 377 sizeof (struct specifier_methods),
428
+ − 378 specifier_methods_description_1
+ − 379 };
+ − 380
1204
+ − 381 static const struct memory_description specifier_caching_description_1[] = {
428
+ − 382 { XD_END }
+ − 383 };
+ − 384
1204
+ − 385 static const struct sized_memory_description specifier_caching_description = {
440
+ − 386 sizeof (struct specifier_caching),
428
+ − 387 specifier_caching_description_1
+ − 388 };
+ − 389
1204
+ − 390 static const struct sized_memory_description specifier_extra_description_map[]
+ − 391 = {
+ − 392 { offsetof (Lisp_Specifier, methods) },
+ − 393 { offsetof (struct specifier_methods, extra_description) },
+ − 394 { -1 },
+ − 395 };
+ − 396
+ − 397 const struct memory_description specifier_description[] = {
442
+ − 398 { XD_STRUCT_PTR, offsetof (Lisp_Specifier, methods), 1,
+ − 399 &specifier_methods_description },
440
+ − 400 { XD_LO_LINK, offsetof (Lisp_Specifier, next_specifier) },
+ − 401 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, global_specs) },
+ − 402 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, device_specs) },
+ − 403 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, frame_specs) },
+ − 404 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, window_specs) },
+ − 405 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, buffer_specs) },
442
+ − 406 { XD_STRUCT_PTR, offsetof (Lisp_Specifier, caching), 1,
+ − 407 &specifier_caching_description },
440
+ − 408 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, magic_parent) },
+ − 409 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, fallback) },
1204
+ − 410 { XD_STRUCT_ARRAY, offsetof (Lisp_Specifier, data), 1,
+ − 411 specifier_extra_description_map },
428
+ − 412 { XD_END }
+ − 413 };
+ − 414
1204
+ − 415 static const struct memory_description specifier_empty_extra_description_1[] =
+ − 416 {
+ − 417 { XD_END }
+ − 418 };
+ − 419
+ − 420 const struct sized_memory_description specifier_empty_extra_description = {
+ − 421 0, specifier_empty_extra_description_1
+ − 422 };
+ − 423
934
+ − 424 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("specifier", specifier,
+ − 425 1, /*dumpable-flag*/
+ − 426 mark_specifier, print_specifier,
+ − 427 finalize_specifier,
+ − 428 specifier_equal, specifier_hash,
+ − 429 specifier_description,
+ − 430 sizeof_specifier,
+ − 431 Lisp_Specifier);
428
+ − 432
+ − 433 /************************************************************************/
+ − 434 /* Creating specifiers */
+ − 435 /************************************************************************/
+ − 436
+ − 437 static struct specifier_methods *
578
+ − 438 decode_specifier_type (Lisp_Object type, Error_Behavior errb)
428
+ − 439 {
+ − 440 int i;
+ − 441
+ − 442 for (i = 0; i < Dynarr_length (the_specifier_type_entry_dynarr); i++)
+ − 443 {
+ − 444 if (EQ (type, Dynarr_at (the_specifier_type_entry_dynarr, i).symbol))
+ − 445 return Dynarr_at (the_specifier_type_entry_dynarr, i).meths;
+ − 446 }
+ − 447
563
+ − 448 maybe_invalid_argument ("Invalid specifier type",
442
+ − 449 type, Qspecifier, errb);
428
+ − 450
+ − 451 return 0;
+ − 452 }
+ − 453
+ − 454 static int
+ − 455 valid_specifier_type_p (Lisp_Object type)
+ − 456 {
+ − 457 return decode_specifier_type (type, ERROR_ME_NOT) != 0;
+ − 458 }
+ − 459
+ − 460 DEFUN ("valid-specifier-type-p", Fvalid_specifier_type_p, 1, 1, 0, /*
+ − 461 Given a SPECIFIER-TYPE, return non-nil if it is valid.
+ − 462 Valid types are 'generic, 'integer, boolean, 'color, 'font, 'image,
+ − 463 'face-boolean, and 'toolbar.
+ − 464 */
+ − 465 (specifier_type))
+ − 466 {
+ − 467 return valid_specifier_type_p (specifier_type) ? Qt : Qnil;
+ − 468 }
+ − 469
+ − 470 DEFUN ("specifier-type-list", Fspecifier_type_list, 0, 0, 0, /*
+ − 471 Return a list of valid specifier types.
+ − 472 */
+ − 473 ())
+ − 474 {
+ − 475 return Fcopy_sequence (Vspecifier_type_list);
+ − 476 }
+ − 477
+ − 478 void
+ − 479 add_entry_to_specifier_type_list (Lisp_Object symbol,
+ − 480 struct specifier_methods *meths)
+ − 481 {
+ − 482 struct specifier_type_entry entry;
+ − 483
+ − 484 entry.symbol = symbol;
+ − 485 entry.meths = meths;
+ − 486 Dynarr_add (the_specifier_type_entry_dynarr, entry);
+ − 487 Vspecifier_type_list = Fcons (symbol, Vspecifier_type_list);
+ − 488 }
+ − 489
+ − 490 static Lisp_Object
+ − 491 make_specifier_internal (struct specifier_methods *spec_meths,
665
+ − 492 Bytecount data_size, int call_create_meth)
428
+ − 493 {
+ − 494 Lisp_Object specifier;
440
+ − 495 Lisp_Specifier *sp = (Lisp_Specifier *)
1204
+ − 496 basic_alloc_lcrecord (aligned_sizeof_specifier (data_size),
+ − 497 &lrecord_specifier);
428
+ − 498
+ − 499 sp->methods = spec_meths;
+ − 500 sp->global_specs = Qnil;
+ − 501 sp->device_specs = Qnil;
+ − 502 sp->frame_specs = Qnil;
+ − 503 sp->window_specs = make_weak_list (WEAK_LIST_KEY_ASSOC);
+ − 504 sp->buffer_specs = Qnil;
+ − 505 sp->fallback = Qnil;
+ − 506 sp->magic_parent = Qnil;
+ − 507 sp->caching = 0;
+ − 508 sp->next_specifier = Vall_specifiers;
+ − 509
793
+ − 510 specifier = wrap_specifier (sp);
428
+ − 511 Vall_specifiers = specifier;
+ − 512
+ − 513 if (call_create_meth)
+ − 514 {
+ − 515 struct gcpro gcpro1;
+ − 516 GCPRO1 (specifier);
+ − 517 MAYBE_SPECMETH (XSPECIFIER (specifier), create, (specifier));
+ − 518 UNGCPRO;
+ − 519 }
+ − 520 return specifier;
+ − 521 }
+ − 522
+ − 523 static Lisp_Object
+ − 524 make_specifier (struct specifier_methods *meths)
+ − 525 {
+ − 526 return make_specifier_internal (meths, meths->extra_data_size, 1);
+ − 527 }
+ − 528
+ − 529 Lisp_Object
+ − 530 make_magic_specifier (Lisp_Object type)
+ − 531 {
+ − 532 /* This function can GC */
+ − 533 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 534 Lisp_Object bodily, ghost;
+ − 535 struct gcpro gcpro1;
+ − 536
+ − 537 bodily = make_specifier (meths);
+ − 538 GCPRO1 (bodily);
+ − 539 ghost = make_specifier_internal (meths, 0, 0);
+ − 540 UNGCPRO;
+ − 541
+ − 542 /* Connect guys together */
+ − 543 XSPECIFIER(bodily)->magic_parent = Qt;
+ − 544 XSPECIFIER(bodily)->fallback = ghost;
+ − 545 XSPECIFIER(ghost)->magic_parent = bodily;
+ − 546
+ − 547 return bodily;
+ − 548 }
+ − 549
+ − 550 DEFUN ("make-specifier", Fmake_specifier, 1, 1, 0, /*
+ − 551 Return a new specifier object of type TYPE.
+ − 552
+ − 553 A specifier is an object that can be used to keep track of a property
+ − 554 whose value can be per-buffer, per-window, per-frame, or per-device,
442
+ − 555 and can further be restricted to a particular console-type or
+ − 556 device-class. Specifiers are used, for example, for the various
+ − 557 built-in properties of a face; this allows a face to have different
+ − 558 values in different frames, buffers, etc.
+ − 559
+ − 560 When speaking of the value of a specifier, it is important to
+ − 561 distinguish between the *setting* of a specifier, called an
+ − 562 \"instantiator\", and the *actual value*, called an \"instance\". You
+ − 563 put various possible instantiators (i.e. settings) into a specifier
+ − 564 and associate them with particular locales (buffer, window, frame,
+ − 565 device, global), and then the instance (i.e. actual value) is
+ − 566 retrieved in a specific domain (window, frame, device) by looking
+ − 567 through the possible instantiators (i.e. settings). This process is
+ − 568 called \"instantiation\".
444
+ − 569
442
+ − 570 To put settings into a specifier, use `set-specifier', or the
+ − 571 lower-level functions `add-spec-to-specifier' and
+ − 572 `add-spec-list-to-specifier'. You can also temporarily bind a setting
+ − 573 to a specifier using `let-specifier'. To retrieve settings, use
+ − 574 `specifier-specs', or its lower-level counterpart
+ − 575 `specifier-spec-list'. To determine the actual value, use
+ − 576 `specifier-instance'.
+ − 577
+ − 578 For more information, see `set-specifier', `specifier-instance',
428
+ − 579 `specifier-specs', and `add-spec-to-specifier'; or, for a detailed
442
+ − 580 description of specifiers, including how exactly the instantiation
+ − 581 process works, see the chapter on specifiers in the XEmacs Lisp
+ − 582 Reference Manual.
428
+ − 583
+ − 584 TYPE specifies the particular type of specifier, and should be one of
442
+ − 585 the symbols 'generic, 'integer, 'natnum, 'boolean, 'color, 'font,
+ − 586 'image, 'face-boolean, 'display-table, 'gutter, 'gutter-size,
+ − 587 'gutter-visible or 'toolbar.
+ − 588
+ − 589 For more information on particular types of specifiers, see the
+ − 590 functions `make-generic-specifier', `make-integer-specifier',
+ − 591 `make-natnum-specifier', `make-boolean-specifier',
+ − 592 `make-color-specifier', `make-font-specifier', `make-image-specifier',
+ − 593 `make-face-boolean-specifier', `make-gutter-size-specifier',
+ − 594 `make-gutter-visible-specifier', `default-toolbar', `default-gutter',
+ − 595 and `current-display-table'.
428
+ − 596 */
+ − 597 (type))
+ − 598 {
+ − 599 /* This function can GC */
442
+ − 600 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
428
+ − 601
+ − 602 return make_specifier (meths);
+ − 603 }
+ − 604
+ − 605 DEFUN ("specifierp", Fspecifierp, 1, 1, 0, /*
+ − 606 Return t if OBJECT is a specifier.
+ − 607
+ − 608 A specifier is an object that can be used to keep track of a property
+ − 609 whose value can be per-buffer, per-window, per-frame, or per-device,
+ − 610 and can further be restricted to a particular console-type or device-class.
+ − 611 See `make-specifier'.
+ − 612 */
+ − 613 (object))
+ − 614 {
+ − 615 return SPECIFIERP (object) ? Qt : Qnil;
+ − 616 }
+ − 617
+ − 618 DEFUN ("specifier-type", Fspecifier_type, 1, 1, 0, /*
+ − 619 Return the type of SPECIFIER.
+ − 620 */
+ − 621 (specifier))
+ − 622 {
+ − 623 CHECK_SPECIFIER (specifier);
+ − 624 return intern (XSPECIFIER (specifier)->methods->name);
+ − 625 }
+ − 626
+ − 627
+ − 628 /************************************************************************/
+ − 629 /* Locales and domains */
+ − 630 /************************************************************************/
+ − 631
+ − 632 DEFUN ("valid-specifier-locale-p", Fvalid_specifier_locale_p, 1, 1, 0, /*
+ − 633 Return t if LOCALE is a valid specifier locale.
+ − 634 Valid locales are devices, frames, windows, buffers, and 'global.
+ − 635 \(nil is not valid.)
+ − 636 */
+ − 637 (locale))
+ − 638 {
+ − 639 /* This cannot GC. */
+ − 640 return ((DEVICEP (locale) && DEVICE_LIVE_P (XDEVICE (locale))) ||
+ − 641 (FRAMEP (locale) && FRAME_LIVE_P (XFRAME (locale))) ||
+ − 642 (BUFFERP (locale) && BUFFER_LIVE_P (XBUFFER (locale))) ||
+ − 643 /* dead windows are allowed because they may become live
+ − 644 windows again when a window configuration is restored */
+ − 645 WINDOWP (locale) ||
+ − 646 EQ (locale, Qglobal))
+ − 647 ? Qt : Qnil;
+ − 648 }
+ − 649
+ − 650 DEFUN ("valid-specifier-domain-p", Fvalid_specifier_domain_p, 1, 1, 0, /*
+ − 651 Return t if DOMAIN is a valid specifier domain.
+ − 652 A domain is used to instance a specifier (i.e. determine the specifier's
442
+ − 653 value in that domain). Valid domains are image instances, windows, frames,
+ − 654 and devices. \(nil is not valid.) image instances are pseudo-domains since
+ − 655 instantiation will actually occur in the window the image instance itself is
+ − 656 instantiated in.
428
+ − 657 */
+ − 658 (domain))
+ − 659 {
+ − 660 /* This cannot GC. */
+ − 661 return ((DEVICEP (domain) && DEVICE_LIVE_P (XDEVICE (domain))) ||
+ − 662 (FRAMEP (domain) && FRAME_LIVE_P (XFRAME (domain))) ||
442
+ − 663 (WINDOWP (domain) && WINDOW_LIVE_P (XWINDOW (domain))) ||
+ − 664 /* #### get image instances out of domains! */
+ − 665 IMAGE_INSTANCEP (domain))
428
+ − 666 ? Qt : Qnil;
+ − 667 }
+ − 668
442
+ − 669 DEFUN ("valid-specifier-locale-type-p", Fvalid_specifier_locale_type_p, 1, 1, 0,
+ − 670 /*
428
+ − 671 Given a specifier LOCALE-TYPE, return non-nil if it is valid.
+ − 672 Valid locale types are 'global, 'device, 'frame, 'window, and 'buffer.
+ − 673 \(Note, however, that in functions that accept either a locale or a locale
+ − 674 type, 'global is considered an individual locale.)
+ − 675 */
+ − 676 (locale_type))
+ − 677 {
+ − 678 /* This cannot GC. */
+ − 679 return (EQ (locale_type, Qglobal) ||
+ − 680 EQ (locale_type, Qdevice) ||
+ − 681 EQ (locale_type, Qframe) ||
+ − 682 EQ (locale_type, Qwindow) ||
+ − 683 EQ (locale_type, Qbuffer)) ? Qt : Qnil;
+ − 684 }
+ − 685
+ − 686 static void
+ − 687 check_valid_locale_or_locale_type (Lisp_Object locale)
+ − 688 {
+ − 689 /* This cannot GC. */
+ − 690 if (EQ (locale, Qall) ||
+ − 691 !NILP (Fvalid_specifier_locale_p (locale)) ||
+ − 692 !NILP (Fvalid_specifier_locale_type_p (locale)))
+ − 693 return;
563
+ − 694 invalid_argument ("Invalid specifier locale or locale type", locale);
428
+ − 695 }
+ − 696
+ − 697 DEFUN ("specifier-locale-type-from-locale", Fspecifier_locale_type_from_locale,
+ − 698 1, 1, 0, /*
+ − 699 Given a specifier LOCALE, return its type.
+ − 700 */
+ − 701 (locale))
+ − 702 {
+ − 703 /* This cannot GC. */
+ − 704 if (NILP (Fvalid_specifier_locale_p (locale)))
563
+ − 705 invalid_argument ("Invalid specifier locale",
442
+ − 706 locale);
428
+ − 707 if (DEVICEP (locale)) return Qdevice;
+ − 708 if (FRAMEP (locale)) return Qframe;
+ − 709 if (WINDOWP (locale)) return Qwindow;
+ − 710 if (BUFFERP (locale)) return Qbuffer;
+ − 711 assert (EQ (locale, Qglobal));
+ − 712 return Qglobal;
+ − 713 }
+ − 714
+ − 715 static Lisp_Object
+ − 716 decode_locale (Lisp_Object locale)
+ − 717 {
+ − 718 /* This cannot GC. */
+ − 719 if (NILP (locale))
+ − 720 return Qglobal;
+ − 721 else if (!NILP (Fvalid_specifier_locale_p (locale)))
+ − 722 return locale;
+ − 723 else
563
+ − 724 invalid_argument ("Invalid specifier locale",
442
+ − 725 locale);
428
+ − 726
+ − 727 return Qnil;
+ − 728 }
+ − 729
+ − 730 static enum spec_locale_type
+ − 731 decode_locale_type (Lisp_Object locale_type)
+ − 732 {
+ − 733 /* This cannot GC. */
+ − 734 if (EQ (locale_type, Qglobal)) return LOCALE_GLOBAL;
+ − 735 if (EQ (locale_type, Qdevice)) return LOCALE_DEVICE;
+ − 736 if (EQ (locale_type, Qframe)) return LOCALE_FRAME;
+ − 737 if (EQ (locale_type, Qwindow)) return LOCALE_WINDOW;
+ − 738 if (EQ (locale_type, Qbuffer)) return LOCALE_BUFFER;
+ − 739
563
+ − 740 invalid_argument ("Invalid specifier locale type",
442
+ − 741 locale_type);
1204
+ − 742 RETURN_NOT_REACHED (LOCALE_GLOBAL);
428
+ − 743 }
+ − 744
+ − 745 Lisp_Object
+ − 746 decode_locale_list (Lisp_Object locale)
+ − 747 {
+ − 748 /* This cannot GC. */
+ − 749 /* The return value of this function must be GCPRO'd. */
+ − 750 if (NILP (locale))
+ − 751 {
+ − 752 return list1 (Qall);
+ − 753 }
+ − 754 else if (CONSP (locale))
+ − 755 {
+ − 756 EXTERNAL_LIST_LOOP_2 (elt, locale)
+ − 757 check_valid_locale_or_locale_type (elt);
+ − 758 return locale;
+ − 759 }
+ − 760 else
+ − 761 {
+ − 762 check_valid_locale_or_locale_type (locale);
+ − 763 return list1 (locale);
+ − 764 }
+ − 765 }
+ − 766
+ − 767 static enum spec_locale_type
+ − 768 locale_type_from_locale (Lisp_Object locale)
+ − 769 {
+ − 770 return decode_locale_type (Fspecifier_locale_type_from_locale (locale));
+ − 771 }
+ − 772
+ − 773 static void
+ − 774 check_valid_domain (Lisp_Object domain)
+ − 775 {
+ − 776 if (NILP (Fvalid_specifier_domain_p (domain)))
563
+ − 777 invalid_argument ("Invalid specifier domain",
442
+ − 778 domain);
428
+ − 779 }
+ − 780
442
+ − 781 Lisp_Object
428
+ − 782 decode_domain (Lisp_Object domain)
+ − 783 {
+ − 784 if (NILP (domain))
+ − 785 return Fselected_window (Qnil);
+ − 786 check_valid_domain (domain);
+ − 787 return domain;
+ − 788 }
+ − 789
+ − 790
+ − 791 /************************************************************************/
+ − 792 /* Tags */
+ − 793 /************************************************************************/
+ − 794
+ − 795 DEFUN ("valid-specifier-tag-p", Fvalid_specifier_tag_p, 1, 1, 0, /*
+ − 796 Return non-nil if TAG is a valid specifier tag.
+ − 797 See also `valid-specifier-tag-set-p'.
+ − 798 */
+ − 799 (tag))
+ − 800 {
+ − 801 return (valid_console_type_p (tag) ||
+ − 802 valid_device_class_p (tag) ||
+ − 803 !NILP (assq_no_quit (tag, Vuser_defined_tags))) ? Qt : Qnil;
+ − 804 }
+ − 805
+ − 806 DEFUN ("valid-specifier-tag-set-p", Fvalid_specifier_tag_set_p, 1, 1, 0, /*
+ − 807 Return non-nil if TAG-SET is a valid specifier tag set.
+ − 808
+ − 809 A specifier tag set is an entity that is attached to an instantiator
+ − 810 and can be used to restrict the scope of that instantiator to a
+ − 811 particular device class or device type and/or to mark instantiators
+ − 812 added by a particular package so that they can be later removed.
+ − 813
+ − 814 A specifier tag set consists of a list of zero of more specifier tags,
+ − 815 each of which is a symbol that is recognized by XEmacs as a tag.
+ − 816 \(The valid device types and device classes are always tags, as are
+ − 817 any tags defined by `define-specifier-tag'.) It is called a "tag set"
+ − 818 \(as opposed to a list) because the order of the tags or the number of
+ − 819 times a particular tag occurs does not matter.
+ − 820
+ − 821 Each tag has a predicate associated with it, which specifies whether
+ − 822 that tag applies to a particular device. The tags which are device types
+ − 823 and classes match devices of that type or class. User-defined tags can
+ − 824 have any predicate, or none (meaning that all devices match). When
+ − 825 attempting to instance a specifier, a particular instantiator is only
+ − 826 considered if the device of the domain being instanced over matches
+ − 827 all tags in the tag set attached to that instantiator.
+ − 828
+ − 829 Most of the time, a tag set is not specified, and the instantiator
+ − 830 gets a null tag set, which matches all devices.
+ − 831 */
+ − 832 (tag_set))
+ − 833 {
+ − 834 Lisp_Object rest;
+ − 835
+ − 836 for (rest = tag_set; !NILP (rest); rest = XCDR (rest))
+ − 837 {
+ − 838 if (!CONSP (rest))
+ − 839 return Qnil;
+ − 840 if (NILP (Fvalid_specifier_tag_p (XCAR (rest))))
+ − 841 return Qnil;
+ − 842 QUIT;
+ − 843 }
+ − 844 return Qt;
+ − 845 }
+ − 846
+ − 847 Lisp_Object
+ − 848 decode_specifier_tag_set (Lisp_Object tag_set)
+ − 849 {
+ − 850 /* The return value of this function must be GCPRO'd. */
+ − 851 if (!NILP (Fvalid_specifier_tag_p (tag_set)))
+ − 852 return list1 (tag_set);
+ − 853 if (NILP (Fvalid_specifier_tag_set_p (tag_set)))
563
+ − 854 invalid_argument ("Invalid specifier tag-set",
442
+ − 855 tag_set);
428
+ − 856 return tag_set;
+ − 857 }
+ − 858
+ − 859 static Lisp_Object
+ − 860 canonicalize_tag_set (Lisp_Object tag_set)
+ − 861 {
+ − 862 int len = XINT (Flength (tag_set));
+ − 863 Lisp_Object *tags, rest;
+ − 864 int i, j;
+ − 865
+ − 866 /* We assume in this function that the tag_set has already been
+ − 867 validated, so there are no surprises. */
+ − 868
+ − 869 if (len == 0 || len == 1)
+ − 870 /* most common case */
+ − 871 return tag_set;
+ − 872
+ − 873 tags = alloca_array (Lisp_Object, len);
+ − 874
+ − 875 i = 0;
+ − 876 LIST_LOOP (rest, tag_set)
+ − 877 tags[i++] = XCAR (rest);
+ − 878
+ − 879 /* Sort the list of tags. We use a bubble sort here (copied from
+ − 880 extent_fragment_update()) -- reduces the function call overhead,
+ − 881 and is the fastest sort for small numbers of items. */
+ − 882
+ − 883 for (i = 1; i < len; i++)
+ − 884 {
+ − 885 j = i - 1;
+ − 886 while (j >= 0 &&
793
+ − 887 qxestrcmp (XSTRING_DATA (XSYMBOL (tags[j])->name),
+ − 888 XSTRING_DATA (XSYMBOL (tags[j+1])->name)) > 0)
428
+ − 889 {
+ − 890 Lisp_Object tmp = tags[j];
+ − 891 tags[j] = tags[j+1];
+ − 892 tags[j+1] = tmp;
+ − 893 j--;
+ − 894 }
+ − 895 }
+ − 896
+ − 897 /* Now eliminate duplicates. */
+ − 898
+ − 899 for (i = 1, j = 1; i < len; i++)
+ − 900 {
+ − 901 /* j holds the destination, i the source. */
+ − 902 if (!EQ (tags[i], tags[i-1]))
+ − 903 tags[j++] = tags[i];
+ − 904 }
+ − 905
+ − 906 return Flist (j, tags);
+ − 907 }
+ − 908
+ − 909 DEFUN ("canonicalize-tag-set", Fcanonicalize_tag_set, 1, 1, 0, /*
+ − 910 Canonicalize the given tag set.
+ − 911 Two canonicalized tag sets can be compared with `equal' to see if they
+ − 912 represent the same tag set. (Specifically, canonicalizing involves
+ − 913 sorting by symbol name and removing duplicates.)
+ − 914 */
+ − 915 (tag_set))
+ − 916 {
+ − 917 if (NILP (Fvalid_specifier_tag_set_p (tag_set)))
563
+ − 918 invalid_argument ("Invalid tag set", tag_set);
428
+ − 919 return canonicalize_tag_set (tag_set);
+ − 920 }
+ − 921
+ − 922 static int
+ − 923 device_matches_specifier_tag_set_p (Lisp_Object device, Lisp_Object tag_set)
+ − 924 {
+ − 925 Lisp_Object devtype, devclass, rest;
+ − 926 struct device *d = XDEVICE (device);
+ − 927
+ − 928 devtype = DEVICE_TYPE (d);
+ − 929 devclass = DEVICE_CLASS (d);
+ − 930
+ − 931 LIST_LOOP (rest, tag_set)
+ − 932 {
+ − 933 Lisp_Object tag = XCAR (rest);
+ − 934 Lisp_Object assoc;
+ − 935
+ − 936 if (EQ (tag, devtype) || EQ (tag, devclass))
+ − 937 continue;
+ − 938 assoc = assq_no_quit (tag, DEVICE_USER_DEFINED_TAGS (d));
+ − 939 /* other built-in tags (device types/classes) are not in
+ − 940 the user-defined-tags list. */
+ − 941 if (NILP (assoc) || NILP (XCDR (assoc)))
+ − 942 return 0;
+ − 943 }
+ − 944
+ − 945 return 1;
+ − 946 }
+ − 947
442
+ − 948 DEFUN ("device-matches-specifier-tag-set-p",
+ − 949 Fdevice_matches_specifier_tag_set_p, 2, 2, 0, /*
428
+ − 950 Return non-nil if DEVICE matches specifier tag set TAG-SET.
+ − 951 This means that DEVICE matches each tag in the tag set. (Every
+ − 952 tag recognized by XEmacs has a predicate associated with it that
+ − 953 specifies which devices match it.)
+ − 954 */
+ − 955 (device, tag_set))
+ − 956 {
+ − 957 CHECK_LIVE_DEVICE (device);
+ − 958
+ − 959 if (NILP (Fvalid_specifier_tag_set_p (tag_set)))
563
+ − 960 invalid_argument ("Invalid tag set", tag_set);
428
+ − 961
+ − 962 return device_matches_specifier_tag_set_p (device, tag_set) ? Qt : Qnil;
+ − 963 }
+ − 964
+ − 965 DEFUN ("define-specifier-tag", Fdefine_specifier_tag, 1, 2, 0, /*
+ − 966 Define a new specifier tag.
+ − 967 If PREDICATE is specified, it should be a function of one argument
+ − 968 \(a device) that specifies whether the tag matches that particular
+ − 969 device. If PREDICATE is omitted, the tag matches all devices.
+ − 970
+ − 971 You can redefine an existing user-defined specifier tag. However,
+ − 972 you cannot redefine the built-in specifier tags (the device types
+ − 973 and classes) or the symbols nil, t, 'all, or 'global.
+ − 974 */
+ − 975 (tag, predicate))
+ − 976 {
+ − 977 Lisp_Object assoc, devcons, concons;
+ − 978 int recompute = 0;
+ − 979
+ − 980 CHECK_SYMBOL (tag);
+ − 981 if (valid_device_class_p (tag) ||
+ − 982 valid_console_type_p (tag))
563
+ − 983 invalid_change ("Cannot redefine built-in specifier tags", tag);
428
+ − 984 /* Try to prevent common instantiators and locales from being
+ − 985 redefined, to reduce ambiguity */
+ − 986 if (NILP (tag) || EQ (tag, Qt) || EQ (tag, Qall) || EQ (tag, Qglobal))
563
+ − 987 invalid_change ("Cannot define nil, t, 'all, or 'global", tag);
428
+ − 988 assoc = assq_no_quit (tag, Vuser_defined_tags);
+ − 989 if (NILP (assoc))
+ − 990 {
+ − 991 recompute = 1;
+ − 992 Vuser_defined_tags = Fcons (Fcons (tag, predicate), Vuser_defined_tags);
+ − 993 DEVICE_LOOP_NO_BREAK (devcons, concons)
+ − 994 {
+ − 995 struct device *d = XDEVICE (XCAR (devcons));
+ − 996 /* Initially set the value to t in case of error
+ − 997 in predicate */
+ − 998 DEVICE_USER_DEFINED_TAGS (d) =
+ − 999 Fcons (Fcons (tag, Qt), DEVICE_USER_DEFINED_TAGS (d));
+ − 1000 }
+ − 1001 }
+ − 1002 else if (!NILP (predicate) && !NILP (XCDR (assoc)))
+ − 1003 {
+ − 1004 recompute = 1;
+ − 1005 XCDR (assoc) = predicate;
+ − 1006 }
+ − 1007
+ − 1008 /* recompute the tag values for all devices. However, in the special
+ − 1009 case where both the old and new predicates are nil, we know that
+ − 1010 we don't have to do this. (It's probably common for people to
+ − 1011 call (define-specifier-tag) more than once on the same tag,
+ − 1012 and the most common case is where PREDICATE is not specified.) */
+ − 1013
+ − 1014 if (recompute)
+ − 1015 {
+ − 1016 DEVICE_LOOP_NO_BREAK (devcons, concons)
+ − 1017 {
+ − 1018 Lisp_Object device = XCAR (devcons);
+ − 1019 assoc = assq_no_quit (tag,
+ − 1020 DEVICE_USER_DEFINED_TAGS (XDEVICE (device)));
+ − 1021 assert (CONSP (assoc));
+ − 1022 if (NILP (predicate))
+ − 1023 XCDR (assoc) = Qt;
+ − 1024 else
+ − 1025 XCDR (assoc) = !NILP (call1 (predicate, device)) ? Qt : Qnil;
+ − 1026 }
+ − 1027 }
+ − 1028
+ − 1029 return Qnil;
+ − 1030 }
+ − 1031
+ − 1032 /* Called at device-creation time to initialize the user-defined
+ − 1033 tag values for the newly-created device. */
+ − 1034
+ − 1035 void
+ − 1036 setup_device_initial_specifier_tags (struct device *d)
+ − 1037 {
+ − 1038 Lisp_Object rest, rest2;
793
+ − 1039 Lisp_Object device = wrap_device (d);
+ − 1040
428
+ − 1041 DEVICE_USER_DEFINED_TAGS (d) = Fcopy_alist (Vuser_defined_tags);
+ − 1042
+ − 1043 /* Now set up the initial values */
+ − 1044 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d))
+ − 1045 XCDR (XCAR (rest)) = Qt;
+ − 1046
+ − 1047 for (rest = Vuser_defined_tags, rest2 = DEVICE_USER_DEFINED_TAGS (d);
+ − 1048 !NILP (rest); rest = XCDR (rest), rest2 = XCDR (rest2))
+ − 1049 {
+ − 1050 Lisp_Object predicate = XCDR (XCAR (rest));
+ − 1051 if (NILP (predicate))
+ − 1052 XCDR (XCAR (rest2)) = Qt;
+ − 1053 else
872
+ − 1054 XCDR (XCAR (rest2)) =
+ − 1055 !NILP (call_critical_lisp_code (d, predicate, device)) ? Qt : Qnil;
428
+ − 1056 }
+ − 1057 }
+ − 1058
442
+ − 1059 DEFUN ("device-matching-specifier-tag-list",
+ − 1060 Fdevice_matching_specifier_tag_list,
428
+ − 1061 0, 1, 0, /*
+ − 1062 Return a list of all specifier tags matching DEVICE.
+ − 1063 DEVICE defaults to the selected device if omitted.
+ − 1064 */
+ − 1065 (device))
+ − 1066 {
+ − 1067 struct device *d = decode_device (device);
+ − 1068 Lisp_Object rest, list = Qnil;
+ − 1069 struct gcpro gcpro1;
+ − 1070
+ − 1071 GCPRO1 (list);
+ − 1072
+ − 1073 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d))
+ − 1074 {
+ − 1075 if (!NILP (XCDR (XCAR (rest))))
+ − 1076 list = Fcons (XCAR (XCAR (rest)), list);
+ − 1077 }
+ − 1078
+ − 1079 list = Fnreverse (list);
+ − 1080 list = Fcons (DEVICE_CLASS (d), list);
+ − 1081 list = Fcons (DEVICE_TYPE (d), list);
+ − 1082
+ − 1083 RETURN_UNGCPRO (list);
+ − 1084 }
+ − 1085
+ − 1086 DEFUN ("specifier-tag-list", Fspecifier_tag_list, 0, 0, 0, /*
+ − 1087 Return a list of all currently-defined specifier tags.
+ − 1088 This includes the built-in ones (the device types and classes).
+ − 1089 */
+ − 1090 ())
+ − 1091 {
+ − 1092 Lisp_Object list = Qnil, rest;
+ − 1093 struct gcpro gcpro1;
+ − 1094
+ − 1095 GCPRO1 (list);
+ − 1096
+ − 1097 LIST_LOOP (rest, Vuser_defined_tags)
+ − 1098 list = Fcons (XCAR (XCAR (rest)), list);
+ − 1099
+ − 1100 list = Fnreverse (list);
+ − 1101 list = nconc2 (Fcopy_sequence (Vdevice_class_list), list);
+ − 1102 list = nconc2 (Fcopy_sequence (Vconsole_type_list), list);
+ − 1103
+ − 1104 RETURN_UNGCPRO (list);
+ − 1105 }
+ − 1106
+ − 1107 DEFUN ("specifier-tag-predicate", Fspecifier_tag_predicate, 1, 1, 0, /*
+ − 1108 Return the predicate for the given specifier tag.
+ − 1109 */
+ − 1110 (tag))
+ − 1111 {
+ − 1112 /* The return value of this function must be GCPRO'd. */
+ − 1113 CHECK_SYMBOL (tag);
+ − 1114
+ − 1115 if (NILP (Fvalid_specifier_tag_p (tag)))
563
+ − 1116 invalid_argument ("Invalid specifier tag",
442
+ − 1117 tag);
428
+ − 1118
+ − 1119 /* Make up some predicates for the built-in types */
+ − 1120
+ − 1121 if (valid_console_type_p (tag))
+ − 1122 return list3 (Qlambda, list1 (Qdevice),
+ − 1123 list3 (Qeq, list2 (Qquote, tag),
+ − 1124 list2 (Qconsole_type, Qdevice)));
+ − 1125
+ − 1126 if (valid_device_class_p (tag))
+ − 1127 return list3 (Qlambda, list1 (Qdevice),
+ − 1128 list3 (Qeq, list2 (Qquote, tag),
+ − 1129 list2 (Qdevice_class, Qdevice)));
+ − 1130
+ − 1131 return XCDR (assq_no_quit (tag, Vuser_defined_tags));
+ − 1132 }
+ − 1133
+ − 1134 /* Return true if A "matches" B. If EXACT_P is 0, A must be a subset of B.
+ − 1135 Otherwise, A must be `equal' to B. The sets must be canonicalized. */
+ − 1136 static int
+ − 1137 tag_sets_match_p (Lisp_Object a, Lisp_Object b, int exact_p)
+ − 1138 {
+ − 1139 if (!exact_p)
+ − 1140 {
+ − 1141 while (!NILP (a) && !NILP (b))
+ − 1142 {
+ − 1143 if (EQ (XCAR (a), XCAR (b)))
+ − 1144 a = XCDR (a);
+ − 1145 b = XCDR (b);
+ − 1146 }
+ − 1147
+ − 1148 return NILP (a);
+ − 1149 }
+ − 1150 else
+ − 1151 {
+ − 1152 while (!NILP (a) && !NILP (b))
+ − 1153 {
+ − 1154 if (!EQ (XCAR (a), XCAR (b)))
+ − 1155 return 0;
+ − 1156 a = XCDR (a);
+ − 1157 b = XCDR (b);
+ − 1158 }
+ − 1159
+ − 1160 return NILP (a) && NILP (b);
+ − 1161 }
+ − 1162 }
+ − 1163
+ − 1164
+ − 1165 /************************************************************************/
+ − 1166 /* Spec-lists and inst-lists */
+ − 1167 /************************************************************************/
+ − 1168
+ − 1169 static Lisp_Object
+ − 1170 call_validate_method (Lisp_Object boxed_method, Lisp_Object instantiator)
+ − 1171 {
+ − 1172 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (instantiator);
+ − 1173 return Qt;
+ − 1174 }
+ − 1175
+ − 1176 static Lisp_Object
+ − 1177 check_valid_instantiator (Lisp_Object instantiator,
+ − 1178 struct specifier_methods *meths,
578
+ − 1179 Error_Behavior errb)
428
+ − 1180 {
+ − 1181 if (meths->validate_method)
+ − 1182 {
+ − 1183 Lisp_Object retval;
+ − 1184
+ − 1185 if (ERRB_EQ (errb, ERROR_ME))
+ − 1186 {
+ − 1187 (meths->validate_method) (instantiator);
+ − 1188 retval = Qt;
+ − 1189 }
+ − 1190 else
+ − 1191 {
+ − 1192 Lisp_Object opaque = make_opaque_ptr ((void *)
+ − 1193 meths->validate_method);
+ − 1194 struct gcpro gcpro1;
+ − 1195
+ − 1196 GCPRO1 (opaque);
+ − 1197 retval = call_with_suspended_errors
+ − 1198 ((lisp_fn_t) call_validate_method,
+ − 1199 Qnil, Qspecifier, errb, 2, opaque, instantiator);
+ − 1200
+ − 1201 free_opaque_ptr (opaque);
+ − 1202 UNGCPRO;
+ − 1203 }
+ − 1204
+ − 1205 return retval;
+ − 1206 }
+ − 1207 return Qt;
+ − 1208 }
+ − 1209
+ − 1210 DEFUN ("check-valid-instantiator", Fcheck_valid_instantiator, 2, 2, 0, /*
+ − 1211 Signal an error if INSTANTIATOR is invalid for SPECIFIER-TYPE.
+ − 1212 */
+ − 1213 (instantiator, specifier_type))
+ − 1214 {
+ − 1215 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 1216 ERROR_ME);
+ − 1217
+ − 1218 return check_valid_instantiator (instantiator, meths, ERROR_ME);
+ − 1219 }
+ − 1220
+ − 1221 DEFUN ("valid-instantiator-p", Fvalid_instantiator_p, 2, 2, 0, /*
+ − 1222 Return non-nil if INSTANTIATOR is valid for SPECIFIER-TYPE.
+ − 1223 */
+ − 1224 (instantiator, specifier_type))
+ − 1225 {
+ − 1226 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 1227 ERROR_ME);
+ − 1228
+ − 1229 return check_valid_instantiator (instantiator, meths, ERROR_ME_NOT);
+ − 1230 }
+ − 1231
+ − 1232 static Lisp_Object
+ − 1233 check_valid_inst_list (Lisp_Object inst_list, struct specifier_methods *meths,
578
+ − 1234 Error_Behavior errb)
428
+ − 1235 {
+ − 1236 Lisp_Object rest;
+ − 1237
+ − 1238 LIST_LOOP (rest, inst_list)
+ − 1239 {
+ − 1240 Lisp_Object inst_pair, tag_set;
+ − 1241
+ − 1242 if (!CONSP (rest))
+ − 1243 {
563
+ − 1244 maybe_sferror (
442
+ − 1245 "Invalid instantiator list", inst_list,
428
+ − 1246 Qspecifier, errb);
+ − 1247 return Qnil;
+ − 1248 }
+ − 1249 if (!CONSP (inst_pair = XCAR (rest)))
+ − 1250 {
563
+ − 1251 maybe_sferror (
442
+ − 1252 "Invalid instantiator pair", inst_pair,
428
+ − 1253 Qspecifier, errb);
+ − 1254 return Qnil;
+ − 1255 }
+ − 1256 if (NILP (Fvalid_specifier_tag_set_p (tag_set = XCAR (inst_pair))))
+ − 1257 {
563
+ − 1258 maybe_invalid_argument (
442
+ − 1259 "Invalid specifier tag", tag_set,
428
+ − 1260 Qspecifier, errb);
+ − 1261 return Qnil;
+ − 1262 }
+ − 1263
+ − 1264 if (NILP (check_valid_instantiator (XCDR (inst_pair), meths, errb)))
+ − 1265 return Qnil;
+ − 1266 }
+ − 1267
+ − 1268 return Qt;
+ − 1269 }
+ − 1270
+ − 1271 DEFUN ("check-valid-inst-list", Fcheck_valid_inst_list, 2, 2, 0, /*
+ − 1272 Signal an error if INST-LIST is invalid for specifier type TYPE.
+ − 1273 */
+ − 1274 (inst_list, type))
+ − 1275 {
+ − 1276 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1277
+ − 1278 return check_valid_inst_list (inst_list, meths, ERROR_ME);
+ − 1279 }
+ − 1280
+ − 1281 DEFUN ("valid-inst-list-p", Fvalid_inst_list_p, 2, 2, 0, /*
+ − 1282 Return non-nil if INST-LIST is valid for specifier type TYPE.
+ − 1283 */
+ − 1284 (inst_list, type))
+ − 1285 {
+ − 1286 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1287
+ − 1288 return check_valid_inst_list (inst_list, meths, ERROR_ME_NOT);
+ − 1289 }
+ − 1290
+ − 1291 static Lisp_Object
+ − 1292 check_valid_spec_list (Lisp_Object spec_list, struct specifier_methods *meths,
578
+ − 1293 Error_Behavior errb)
428
+ − 1294 {
+ − 1295 Lisp_Object rest;
+ − 1296
+ − 1297 LIST_LOOP (rest, spec_list)
+ − 1298 {
+ − 1299 Lisp_Object spec, locale;
+ − 1300 if (!CONSP (rest) || !CONSP (spec = XCAR (rest)))
+ − 1301 {
563
+ − 1302 maybe_sferror (
442
+ − 1303 "Invalid specification list", spec_list,
428
+ − 1304 Qspecifier, errb);
+ − 1305 return Qnil;
+ − 1306 }
+ − 1307 if (NILP (Fvalid_specifier_locale_p (locale = XCAR (spec))))
+ − 1308 {
563
+ − 1309 maybe_invalid_argument (
442
+ − 1310 "Invalid specifier locale", locale,
428
+ − 1311 Qspecifier, errb);
+ − 1312 return Qnil;
+ − 1313 }
+ − 1314
+ − 1315 if (NILP (check_valid_inst_list (XCDR (spec), meths, errb)))
+ − 1316 return Qnil;
+ − 1317 }
+ − 1318
+ − 1319 return Qt;
+ − 1320 }
+ − 1321
+ − 1322 DEFUN ("check-valid-spec-list", Fcheck_valid_spec_list, 2, 2, 0, /*
+ − 1323 Signal an error if SPEC-LIST is invalid for specifier type TYPE.
+ − 1324 */
+ − 1325 (spec_list, type))
+ − 1326 {
+ − 1327 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1328
+ − 1329 return check_valid_spec_list (spec_list, meths, ERROR_ME);
+ − 1330 }
+ − 1331
+ − 1332 DEFUN ("valid-spec-list-p", Fvalid_spec_list_p, 2, 2, 0, /*
+ − 1333 Return non-nil if SPEC-LIST is valid for specifier type TYPE.
+ − 1334 */
+ − 1335 (spec_list, type))
+ − 1336 {
+ − 1337 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME);
+ − 1338
+ − 1339 return check_valid_spec_list (spec_list, meths, ERROR_ME_NOT);
+ − 1340 }
+ − 1341
+ − 1342 enum spec_add_meth
+ − 1343 decode_how_to_add_specification (Lisp_Object how_to_add)
+ − 1344 {
+ − 1345 if (NILP (how_to_add) || EQ (Qremove_tag_set_prepend, how_to_add))
+ − 1346 return SPEC_REMOVE_TAG_SET_PREPEND;
+ − 1347 if (EQ (Qremove_tag_set_append, how_to_add))
+ − 1348 return SPEC_REMOVE_TAG_SET_APPEND;
+ − 1349 if (EQ (Qappend, how_to_add))
+ − 1350 return SPEC_APPEND;
+ − 1351 if (EQ (Qprepend, how_to_add))
+ − 1352 return SPEC_PREPEND;
+ − 1353 if (EQ (Qremove_locale, how_to_add))
+ − 1354 return SPEC_REMOVE_LOCALE;
+ − 1355 if (EQ (Qremove_locale_type, how_to_add))
+ − 1356 return SPEC_REMOVE_LOCALE_TYPE;
+ − 1357 if (EQ (Qremove_all, how_to_add))
+ − 1358 return SPEC_REMOVE_ALL;
+ − 1359
563
+ − 1360 invalid_constant ("Invalid `how-to-add' flag", how_to_add);
428
+ − 1361
1204
+ − 1362 RETURN_NOT_REACHED (SPEC_PREPEND);
428
+ − 1363 }
+ − 1364
+ − 1365 /* Given a specifier object SPEC, return bodily specifier if SPEC is a
+ − 1366 ghost specifier, otherwise return the object itself
+ − 1367 */
+ − 1368 static Lisp_Object
+ − 1369 bodily_specifier (Lisp_Object spec)
+ − 1370 {
+ − 1371 return (GHOST_SPECIFIER_P (XSPECIFIER (spec))
+ − 1372 ? XSPECIFIER(spec)->magic_parent : spec);
+ − 1373 }
+ − 1374
+ − 1375 /* Signal error if (specifier SPEC is read-only.
+ − 1376 Read only are ghost specifiers unless Vunlock_ghost_specifiers is
+ − 1377 non-nil. All other specifiers are read-write.
+ − 1378 */
+ − 1379 static void
+ − 1380 check_modifiable_specifier (Lisp_Object spec)
+ − 1381 {
+ − 1382 if (NILP (Vunlock_ghost_specifiers)
+ − 1383 && GHOST_SPECIFIER_P (XSPECIFIER (spec)))
563
+ − 1384 signal_error (Qsetting_constant,
+ − 1385 "Attempt to modify read-only specifier",
+ − 1386 spec);
428
+ − 1387 }
+ − 1388
+ − 1389 int
+ − 1390 unlock_ghost_specifiers_protected (void)
+ − 1391 {
853
+ − 1392 return internal_bind_lisp_object (&Vunlock_ghost_specifiers, Qt);
428
+ − 1393 }
+ − 1394
+ − 1395 /* This gets hit so much that the function call overhead had a
+ − 1396 measurable impact (according to Quantify). #### We should figure
+ − 1397 out the frequency with which this is called with the various types
+ − 1398 and reorder the check accordingly. */
+ − 1399 #define SPECIFIER_GET_SPEC_LIST(specifier, type) \
+ − 1400 (type == LOCALE_GLOBAL ? &(XSPECIFIER (specifier)->global_specs) : \
+ − 1401 type == LOCALE_DEVICE ? &(XSPECIFIER (specifier)->device_specs) : \
+ − 1402 type == LOCALE_FRAME ? &(XSPECIFIER (specifier)->frame_specs) : \
+ − 1403 type == LOCALE_WINDOW ? &(XWEAK_LIST_LIST \
+ − 1404 (XSPECIFIER (specifier)->window_specs)) : \
+ − 1405 type == LOCALE_BUFFER ? &(XSPECIFIER (specifier)->buffer_specs) : \
+ − 1406 0)
+ − 1407
+ − 1408 static Lisp_Object *
+ − 1409 specifier_get_inst_list (Lisp_Object specifier, Lisp_Object locale,
+ − 1410 enum spec_locale_type type)
+ − 1411 {
+ − 1412 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1413 Lisp_Object specification;
+ − 1414
+ − 1415 if (type == LOCALE_GLOBAL)
+ − 1416 return spec_list;
+ − 1417 /* Calling assq_no_quit when it is just going to return nil anyhow
+ − 1418 is extremely expensive. So sayeth Quantify. */
+ − 1419 if (!CONSP (*spec_list))
+ − 1420 return 0;
+ − 1421 specification = assq_no_quit (locale, *spec_list);
+ − 1422 if (NILP (specification))
+ − 1423 return 0;
+ − 1424 return &XCDR (specification);
+ − 1425 }
+ − 1426
+ − 1427 /* For the given INST_LIST, return a new INST_LIST containing all elements
+ − 1428 where TAG-SET matches the element's tag set. EXACT_P indicates whether
+ − 1429 the match must be exact (as opposed to a subset). SHORT_P indicates
+ − 1430 that the short form (for `specifier-specs') should be returned if
+ − 1431 possible. If COPY_TREE_P, `copy-tree' is used to ensure that no
+ − 1432 elements of the new list are shared with the initial list.
+ − 1433 */
+ − 1434
+ − 1435 static Lisp_Object
+ − 1436 specifier_process_inst_list (Lisp_Object inst_list,
+ − 1437 Lisp_Object tag_set, int exact_p,
+ − 1438 int short_p, int copy_tree_p)
+ − 1439 {
+ − 1440 Lisp_Object retval = Qnil;
+ − 1441 Lisp_Object rest;
+ − 1442 struct gcpro gcpro1;
+ − 1443
+ − 1444 GCPRO1 (retval);
+ − 1445 LIST_LOOP (rest, inst_list)
+ − 1446 {
+ − 1447 Lisp_Object tagged_inst = XCAR (rest);
+ − 1448 Lisp_Object tagged_inst_tag = XCAR (tagged_inst);
+ − 1449 if (tag_sets_match_p (tag_set, tagged_inst_tag, exact_p))
+ − 1450 {
+ − 1451 if (short_p && NILP (tagged_inst_tag))
+ − 1452 retval = Fcons (copy_tree_p ?
+ − 1453 Fcopy_tree (XCDR (tagged_inst), Qt) :
+ − 1454 XCDR (tagged_inst),
+ − 1455 retval);
+ − 1456 else
+ − 1457 retval = Fcons (copy_tree_p ? Fcopy_tree (tagged_inst, Qt) :
+ − 1458 tagged_inst, retval);
+ − 1459 }
+ − 1460 }
+ − 1461 retval = Fnreverse (retval);
+ − 1462 UNGCPRO;
+ − 1463 /* If there is a single instantiator and the short form is
+ − 1464 requested, return just the instantiator (rather than a one-element
+ − 1465 list of it) unless it is nil (so that it can be distinguished from
+ − 1466 no instantiators at all). */
+ − 1467 if (short_p && CONSP (retval) && !NILP (XCAR (retval)) &&
+ − 1468 NILP (XCDR (retval)))
+ − 1469 return XCAR (retval);
+ − 1470 else
+ − 1471 return retval;
+ − 1472 }
+ − 1473
+ − 1474 static Lisp_Object
+ − 1475 specifier_get_external_inst_list (Lisp_Object specifier, Lisp_Object locale,
+ − 1476 enum spec_locale_type type,
+ − 1477 Lisp_Object tag_set, int exact_p,
+ − 1478 int short_p, int copy_tree_p)
+ − 1479 {
+ − 1480 Lisp_Object *inst_list = specifier_get_inst_list (specifier, locale,
+ − 1481 type);
+ − 1482 if (!inst_list || NILP (*inst_list))
+ − 1483 {
+ − 1484 /* nil for *inst_list should only occur in 'global */
+ − 1485 assert (!inst_list || EQ (locale, Qglobal));
+ − 1486 return Qnil;
+ − 1487 }
+ − 1488
+ − 1489 return specifier_process_inst_list (*inst_list, tag_set, exact_p,
+ − 1490 short_p, copy_tree_p);
+ − 1491 }
+ − 1492
+ − 1493 static Lisp_Object
+ − 1494 specifier_get_external_spec_list (Lisp_Object specifier,
+ − 1495 enum spec_locale_type type,
+ − 1496 Lisp_Object tag_set, int exact_p)
+ − 1497 {
+ − 1498 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1499 Lisp_Object retval = Qnil;
+ − 1500 Lisp_Object rest;
+ − 1501 struct gcpro gcpro1;
+ − 1502
+ − 1503 assert (type != LOCALE_GLOBAL);
+ − 1504 /* We're about to let stuff go external; make sure there aren't
+ − 1505 any dead objects */
+ − 1506 *spec_list = cleanup_assoc_list (*spec_list);
+ − 1507
+ − 1508 GCPRO1 (retval);
+ − 1509 LIST_LOOP (rest, *spec_list)
+ − 1510 {
+ − 1511 Lisp_Object spec = XCAR (rest);
+ − 1512 Lisp_Object inst_list =
+ − 1513 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 1);
+ − 1514 if (!NILP (inst_list))
+ − 1515 retval = Fcons (Fcons (XCAR (spec), inst_list), retval);
+ − 1516 }
+ − 1517 RETURN_UNGCPRO (Fnreverse (retval));
+ − 1518 }
+ − 1519
+ − 1520 static Lisp_Object *
+ − 1521 specifier_new_spec (Lisp_Object specifier, Lisp_Object locale,
+ − 1522 enum spec_locale_type type)
+ − 1523 {
+ − 1524 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1525 Lisp_Object new_spec = Fcons (locale, Qnil);
+ − 1526 assert (type != LOCALE_GLOBAL);
+ − 1527 *spec_list = Fcons (new_spec, *spec_list);
+ − 1528 return &XCDR (new_spec);
+ − 1529 }
+ − 1530
+ − 1531 /* For the given INST_LIST, return a new list comprised of elements
+ − 1532 where TAG_SET does not match the element's tag set. This operation
+ − 1533 is destructive. */
+ − 1534
+ − 1535 static Lisp_Object
+ − 1536 specifier_process_remove_inst_list (Lisp_Object inst_list,
+ − 1537 Lisp_Object tag_set, int exact_p,
+ − 1538 int *was_removed)
+ − 1539 {
+ − 1540 Lisp_Object prev = Qnil, rest;
+ − 1541
+ − 1542 *was_removed = 0;
+ − 1543
+ − 1544 LIST_LOOP (rest, inst_list)
+ − 1545 {
+ − 1546 if (tag_sets_match_p (tag_set, XCAR (XCAR (rest)), exact_p))
+ − 1547 {
+ − 1548 /* time to remove. */
+ − 1549 *was_removed = 1;
+ − 1550 if (NILP (prev))
+ − 1551 inst_list = XCDR (rest);
+ − 1552 else
+ − 1553 XCDR (prev) = XCDR (rest);
+ − 1554 }
+ − 1555 else
+ − 1556 prev = rest;
+ − 1557 }
+ − 1558
+ − 1559 return inst_list;
+ − 1560 }
+ − 1561
+ − 1562 static void
+ − 1563 specifier_remove_spec (Lisp_Object specifier, Lisp_Object locale,
+ − 1564 enum spec_locale_type type,
+ − 1565 Lisp_Object tag_set, int exact_p)
+ − 1566 {
+ − 1567 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1568 Lisp_Object assoc;
+ − 1569 int was_removed;
+ − 1570
+ − 1571 if (type == LOCALE_GLOBAL)
+ − 1572 *spec_list = specifier_process_remove_inst_list (*spec_list, tag_set,
+ − 1573 exact_p, &was_removed);
+ − 1574 else
+ − 1575 {
+ − 1576 assoc = assq_no_quit (locale, *spec_list);
+ − 1577 if (NILP (assoc))
+ − 1578 /* this locale is not found. */
+ − 1579 return;
+ − 1580 XCDR (assoc) = specifier_process_remove_inst_list (XCDR (assoc),
+ − 1581 tag_set, exact_p,
+ − 1582 &was_removed);
+ − 1583 if (NILP (XCDR (assoc)))
+ − 1584 /* no inst-pairs left; remove this locale entirely. */
+ − 1585 *spec_list = remassq_no_quit (locale, *spec_list);
+ − 1586 }
+ − 1587
+ − 1588 if (was_removed)
+ − 1589 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change,
+ − 1590 (bodily_specifier (specifier), locale));
+ − 1591 }
+ − 1592
+ − 1593 static void
+ − 1594 specifier_remove_locale_type (Lisp_Object specifier,
+ − 1595 enum spec_locale_type type,
+ − 1596 Lisp_Object tag_set, int exact_p)
+ − 1597 {
+ − 1598 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1599 Lisp_Object prev = Qnil, rest;
+ − 1600
+ − 1601 assert (type != LOCALE_GLOBAL);
+ − 1602 LIST_LOOP (rest, *spec_list)
+ − 1603 {
+ − 1604 int was_removed;
+ − 1605 int remove_spec = 0;
+ − 1606 Lisp_Object spec = XCAR (rest);
+ − 1607
+ − 1608 /* There may be dead objects floating around */
+ − 1609 /* remember, dead windows can become alive again. */
+ − 1610 if (!WINDOWP (XCAR (spec)) && object_dead_p (XCAR (spec)))
+ − 1611 {
+ − 1612 remove_spec = 1;
+ − 1613 was_removed = 0;
+ − 1614 }
+ − 1615 else
+ − 1616 {
+ − 1617 XCDR (spec) = specifier_process_remove_inst_list (XCDR (spec),
+ − 1618 tag_set, exact_p,
+ − 1619 &was_removed);
+ − 1620 if (NILP (XCDR (spec)))
+ − 1621 remove_spec = 1;
+ − 1622 }
+ − 1623
+ − 1624 if (remove_spec)
+ − 1625 {
+ − 1626 if (NILP (prev))
+ − 1627 *spec_list = XCDR (rest);
+ − 1628 else
+ − 1629 XCDR (prev) = XCDR (rest);
+ − 1630 }
+ − 1631 else
+ − 1632 prev = rest;
+ − 1633
+ − 1634 if (was_removed)
+ − 1635 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change,
+ − 1636 (bodily_specifier (specifier), XCAR (spec)));
+ − 1637 }
+ − 1638 }
+ − 1639
+ − 1640 /* NEW_LIST is going to be added to INST_LIST, with add method ADD_METH.
+ − 1641 Frob INST_LIST according to ADD_METH. No need to call an after-change
+ − 1642 function; the calling function will do this. Return either SPEC_PREPEND
+ − 1643 or SPEC_APPEND, indicating whether to prepend or append the NEW_LIST. */
+ − 1644
+ − 1645 static enum spec_add_meth
+ − 1646 handle_multiple_add_insts (Lisp_Object *inst_list,
+ − 1647 Lisp_Object new_list,
+ − 1648 enum spec_add_meth add_meth)
+ − 1649 {
+ − 1650 switch (add_meth)
+ − 1651 {
+ − 1652 case SPEC_REMOVE_TAG_SET_APPEND:
+ − 1653 add_meth = SPEC_APPEND;
+ − 1654 goto remove_tag_set;
+ − 1655 case SPEC_REMOVE_TAG_SET_PREPEND:
+ − 1656 add_meth = SPEC_PREPEND;
+ − 1657 remove_tag_set:
+ − 1658 {
+ − 1659 Lisp_Object rest;
+ − 1660
+ − 1661 LIST_LOOP (rest, new_list)
+ − 1662 {
+ − 1663 Lisp_Object canontag = canonicalize_tag_set (XCAR (XCAR (rest)));
+ − 1664 struct gcpro gcpro1;
+ − 1665
+ − 1666 GCPRO1 (canontag);
+ − 1667 /* pull out all elements from the existing list with the
+ − 1668 same tag as any tags in NEW_LIST. */
+ − 1669 *inst_list = remassoc_no_quit (canontag, *inst_list);
+ − 1670 UNGCPRO;
+ − 1671 }
+ − 1672 }
+ − 1673 return add_meth;
+ − 1674 case SPEC_REMOVE_LOCALE:
+ − 1675 *inst_list = Qnil;
+ − 1676 return SPEC_PREPEND;
+ − 1677 case SPEC_APPEND:
+ − 1678 return add_meth;
+ − 1679 default:
+ − 1680 return SPEC_PREPEND;
+ − 1681 }
+ − 1682 }
+ − 1683
+ − 1684 /* Given a LOCALE and INST_LIST that is going to be added to SPECIFIER,
+ − 1685 copy, canonicalize, and call the going_to_add methods as necessary
+ − 1686 to produce a new list that is the one that really will be added
+ − 1687 to the specifier. */
+ − 1688
+ − 1689 static Lisp_Object
+ − 1690 build_up_processed_list (Lisp_Object specifier, Lisp_Object locale,
+ − 1691 Lisp_Object inst_list)
+ − 1692 {
+ − 1693 /* The return value of this function must be GCPRO'd. */
+ − 1694 Lisp_Object rest, list_to_build_up = Qnil;
440
+ − 1695 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 1696 struct gcpro gcpro1;
+ − 1697
+ − 1698 GCPRO1 (list_to_build_up);
+ − 1699 LIST_LOOP (rest, inst_list)
+ − 1700 {
+ − 1701 Lisp_Object tag_set = XCAR (XCAR (rest));
+ − 1702 Lisp_Object sub_inst_list = Qnil;
434
+ − 1703 Lisp_Object instantiator;
428
+ − 1704 struct gcpro ngcpro1, ngcpro2;
+ − 1705
434
+ − 1706 if (HAS_SPECMETH_P (sp, copy_instantiator))
+ − 1707 instantiator = SPECMETH (sp, copy_instantiator,
+ − 1708 (XCDR (XCAR (rest))));
+ − 1709 else
+ − 1710 instantiator = Fcopy_tree (XCDR (XCAR (rest)), Qt);
+ − 1711
428
+ − 1712 NGCPRO2 (instantiator, sub_inst_list);
+ − 1713 /* call the will-add method; it may GC */
+ − 1714 sub_inst_list = HAS_SPECMETH_P (sp, going_to_add) ?
+ − 1715 SPECMETH (sp, going_to_add,
+ − 1716 (bodily_specifier (specifier), locale,
+ − 1717 tag_set, instantiator)) :
+ − 1718 Qt;
+ − 1719 if (EQ (sub_inst_list, Qt))
+ − 1720 /* no change here. */
+ − 1721 sub_inst_list = list1 (Fcons (canonicalize_tag_set (tag_set),
+ − 1722 instantiator));
+ − 1723 else
+ − 1724 {
+ − 1725 /* now canonicalize all the tag sets in the new objects */
+ − 1726 Lisp_Object rest2;
+ − 1727 LIST_LOOP (rest2, sub_inst_list)
+ − 1728 XCAR (XCAR (rest2)) = canonicalize_tag_set (XCAR (XCAR (rest2)));
+ − 1729 }
+ − 1730
+ − 1731 list_to_build_up = nconc2 (sub_inst_list, list_to_build_up);
+ − 1732 NUNGCPRO;
+ − 1733 }
+ − 1734
+ − 1735 RETURN_UNGCPRO (Fnreverse (list_to_build_up));
+ − 1736 }
+ − 1737
+ − 1738 /* Add a specification (locale and instantiator list) to a specifier.
+ − 1739 ADD_METH specifies what to do with existing specifications in the
+ − 1740 specifier, and is an enum that corresponds to the values in
+ − 1741 `add-spec-to-specifier'. The calling routine is responsible for
+ − 1742 validating LOCALE and INST-LIST, but the tag-sets in INST-LIST
+ − 1743 do not need to be canonicalized. */
+ − 1744
+ − 1745 /* #### I really need to rethink the after-change
+ − 1746 functions to make them easier to use and more efficient. */
+ − 1747
+ − 1748 static void
+ − 1749 specifier_add_spec (Lisp_Object specifier, Lisp_Object locale,
+ − 1750 Lisp_Object inst_list, enum spec_add_meth add_meth)
+ − 1751 {
440
+ − 1752 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 1753 enum spec_locale_type type = locale_type_from_locale (locale);
+ − 1754 Lisp_Object *orig_inst_list, tem;
+ − 1755 Lisp_Object list_to_build_up = Qnil;
+ − 1756 struct gcpro gcpro1;
+ − 1757
1015
+ − 1758 if (NILP (inst_list))
+ − 1759 return;
+ − 1760
428
+ − 1761 GCPRO1 (list_to_build_up);
+ − 1762 list_to_build_up = build_up_processed_list (specifier, locale, inst_list);
+ − 1763 /* Now handle REMOVE_LOCALE_TYPE and REMOVE_ALL. These are the
+ − 1764 add-meth types that affect locales other than this one. */
+ − 1765 if (add_meth == SPEC_REMOVE_LOCALE_TYPE)
+ − 1766 specifier_remove_locale_type (specifier, type, Qnil, 0);
+ − 1767 else if (add_meth == SPEC_REMOVE_ALL)
+ − 1768 {
+ − 1769 specifier_remove_locale_type (specifier, LOCALE_BUFFER, Qnil, 0);
+ − 1770 specifier_remove_locale_type (specifier, LOCALE_WINDOW, Qnil, 0);
+ − 1771 specifier_remove_locale_type (specifier, LOCALE_FRAME, Qnil, 0);
+ − 1772 specifier_remove_locale_type (specifier, LOCALE_DEVICE, Qnil, 0);
+ − 1773 specifier_remove_spec (specifier, Qglobal, LOCALE_GLOBAL, Qnil, 0);
+ − 1774 }
+ − 1775
+ − 1776 orig_inst_list = specifier_get_inst_list (specifier, locale, type);
+ − 1777 if (!orig_inst_list)
+ − 1778 orig_inst_list = specifier_new_spec (specifier, locale, type);
+ − 1779 add_meth = handle_multiple_add_insts (orig_inst_list, list_to_build_up,
+ − 1780 add_meth);
+ − 1781
+ − 1782 if (add_meth == SPEC_PREPEND)
+ − 1783 tem = nconc2 (list_to_build_up, *orig_inst_list);
+ − 1784 else if (add_meth == SPEC_APPEND)
+ − 1785 tem = nconc2 (*orig_inst_list, list_to_build_up);
+ − 1786 else
442
+ − 1787 {
+ − 1788 abort ();
+ − 1789 tem = Qnil;
+ − 1790 }
428
+ − 1791
+ − 1792 *orig_inst_list = tem;
+ − 1793
+ − 1794 UNGCPRO;
+ − 1795
+ − 1796 /* call the after-change method */
+ − 1797 MAYBE_SPECMETH (sp, after_change,
+ − 1798 (bodily_specifier (specifier), locale));
+ − 1799 }
+ − 1800
+ − 1801 static void
+ − 1802 specifier_copy_spec (Lisp_Object specifier, Lisp_Object dest,
+ − 1803 Lisp_Object locale, enum spec_locale_type type,
+ − 1804 Lisp_Object tag_set, int exact_p,
+ − 1805 enum spec_add_meth add_meth)
+ − 1806 {
+ − 1807 Lisp_Object inst_list =
+ − 1808 specifier_get_external_inst_list (specifier, locale, type, tag_set,
+ − 1809 exact_p, 0, 0);
+ − 1810 specifier_add_spec (dest, locale, inst_list, add_meth);
+ − 1811 }
+ − 1812
+ − 1813 static void
+ − 1814 specifier_copy_locale_type (Lisp_Object specifier, Lisp_Object dest,
+ − 1815 enum spec_locale_type type,
+ − 1816 Lisp_Object tag_set, int exact_p,
+ − 1817 enum spec_add_meth add_meth)
+ − 1818 {
+ − 1819 Lisp_Object *src_list = SPECIFIER_GET_SPEC_LIST (specifier, type);
+ − 1820 Lisp_Object rest;
+ − 1821
+ − 1822 /* This algorithm is O(n^2) in running time.
+ − 1823 It's certainly possible to implement an O(n log n) algorithm,
+ − 1824 but I doubt there's any need to. */
+ − 1825
+ − 1826 LIST_LOOP (rest, *src_list)
+ − 1827 {
+ − 1828 Lisp_Object spec = XCAR (rest);
+ − 1829 /* There may be dead objects floating around */
+ − 1830 /* remember, dead windows can become alive again. */
+ − 1831 if (WINDOWP (XCAR (spec)) || !object_dead_p (XCAR (spec)))
+ − 1832 specifier_add_spec
+ − 1833 (dest, XCAR (spec),
+ − 1834 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 0),
+ − 1835 add_meth);
+ − 1836 }
+ − 1837 }
+ − 1838
+ − 1839 /* map MAPFUN over the locales in SPECIFIER that are given in LOCALE.
+ − 1840 CLOSURE is passed unchanged to MAPFUN. LOCALE can be one of
+ − 1841
+ − 1842 -- nil (same as 'all)
+ − 1843 -- a single locale, locale type, or 'all
+ − 1844 -- a list of locales, locale types, and/or 'all
+ − 1845
+ − 1846 MAPFUN is called for each locale and locale type given; for 'all,
+ − 1847 it is called for the locale 'global and for the four possible
+ − 1848 locale types. In each invocation, either LOCALE will be a locale
+ − 1849 and LOCALE_TYPE will be the locale type of this locale,
+ − 1850 or LOCALE will be nil and LOCALE_TYPE will be a locale type.
+ − 1851 If MAPFUN ever returns non-zero, the mapping is halted and the
+ − 1852 value returned is returned from map_specifier(). Otherwise, the
+ − 1853 mapping proceeds to the end and map_specifier() returns 0.
+ − 1854 */
+ − 1855
+ − 1856 static int
+ − 1857 map_specifier (Lisp_Object specifier, Lisp_Object locale,
+ − 1858 int (*mapfun) (Lisp_Object specifier,
+ − 1859 Lisp_Object locale,
+ − 1860 enum spec_locale_type locale_type,
+ − 1861 Lisp_Object tag_set,
+ − 1862 int exact_p,
+ − 1863 void *closure),
+ − 1864 Lisp_Object tag_set, Lisp_Object exact_p,
+ − 1865 void *closure)
+ − 1866 {
+ − 1867 int retval = 0;
+ − 1868 Lisp_Object rest;
+ − 1869 struct gcpro gcpro1, gcpro2;
+ − 1870
+ − 1871 GCPRO2 (tag_set, locale);
+ − 1872 locale = decode_locale_list (locale);
+ − 1873 tag_set = decode_specifier_tag_set (tag_set);
+ − 1874 tag_set = canonicalize_tag_set (tag_set);
+ − 1875
+ − 1876 LIST_LOOP (rest, locale)
+ − 1877 {
+ − 1878 Lisp_Object theloc = XCAR (rest);
+ − 1879 if (!NILP (Fvalid_specifier_locale_p (theloc)))
+ − 1880 {
+ − 1881 retval = (*mapfun) (specifier, theloc,
+ − 1882 locale_type_from_locale (theloc),
+ − 1883 tag_set, !NILP (exact_p), closure);
+ − 1884 if (retval)
+ − 1885 break;
+ − 1886 }
+ − 1887 else if (!NILP (Fvalid_specifier_locale_type_p (theloc)))
+ − 1888 {
+ − 1889 retval = (*mapfun) (specifier, Qnil,
+ − 1890 decode_locale_type (theloc), tag_set,
+ − 1891 !NILP (exact_p), closure);
+ − 1892 if (retval)
+ − 1893 break;
+ − 1894 }
+ − 1895 else
+ − 1896 {
+ − 1897 assert (EQ (theloc, Qall));
+ − 1898 retval = (*mapfun) (specifier, Qnil, LOCALE_BUFFER, tag_set,
+ − 1899 !NILP (exact_p), closure);
+ − 1900 if (retval)
+ − 1901 break;
+ − 1902 retval = (*mapfun) (specifier, Qnil, LOCALE_WINDOW, tag_set,
+ − 1903 !NILP (exact_p), closure);
+ − 1904 if (retval)
+ − 1905 break;
+ − 1906 retval = (*mapfun) (specifier, Qnil, LOCALE_FRAME, tag_set,
+ − 1907 !NILP (exact_p), closure);
+ − 1908 if (retval)
+ − 1909 break;
+ − 1910 retval = (*mapfun) (specifier, Qnil, LOCALE_DEVICE, tag_set,
+ − 1911 !NILP (exact_p), closure);
+ − 1912 if (retval)
+ − 1913 break;
+ − 1914 retval = (*mapfun) (specifier, Qglobal, LOCALE_GLOBAL, tag_set,
+ − 1915 !NILP (exact_p), closure);
+ − 1916 if (retval)
+ − 1917 break;
+ − 1918 }
+ − 1919 }
+ − 1920
+ − 1921 UNGCPRO;
+ − 1922 return retval;
+ − 1923 }
+ − 1924
+ − 1925 DEFUN ("add-spec-to-specifier", Fadd_spec_to_specifier, 2, 5, 0, /*
+ − 1926 Add a specification to SPECIFIER.
+ − 1927 The specification maps from LOCALE (which should be a window, buffer,
+ − 1928 frame, device, or 'global, and defaults to 'global) to INSTANTIATOR,
+ − 1929 whose allowed values depend on the type of the specifier. Optional
+ − 1930 argument TAG-SET limits the instantiator to apply only to the specified
+ − 1931 tag set, which should be a list of tags all of which must match the
+ − 1932 device being instantiated over (tags are a device type, a device class,
+ − 1933 or tags defined with `define-specifier-tag'). Specifying a single
+ − 1934 symbol for TAG-SET is equivalent to specifying a one-element list
+ − 1935 containing that symbol. Optional argument HOW-TO-ADD specifies what to
+ − 1936 do if there are already specifications in the specifier.
+ − 1937 It should be one of
+ − 1938
+ − 1939 'prepend Put at the beginning of the current list of
+ − 1940 instantiators for LOCALE.
+ − 1941 'append Add to the end of the current list of
+ − 1942 instantiators for LOCALE.
+ − 1943 'remove-tag-set-prepend (this is the default)
+ − 1944 Remove any existing instantiators whose tag set is
+ − 1945 the same as TAG-SET; then put the new instantiator
+ − 1946 at the beginning of the current list. ("Same tag
+ − 1947 set" means that they contain the same elements.
+ − 1948 The order may be different.)
+ − 1949 'remove-tag-set-append
+ − 1950 Remove any existing instantiators whose tag set is
+ − 1951 the same as TAG-SET; then put the new instantiator
+ − 1952 at the end of the current list.
+ − 1953 'remove-locale Remove all previous instantiators for this locale
+ − 1954 before adding the new spec.
+ − 1955 'remove-locale-type Remove all specifications for all locales of the
+ − 1956 same type as LOCALE (this includes LOCALE itself)
+ − 1957 before adding the new spec.
+ − 1958 'remove-all Remove all specifications from the specifier
+ − 1959 before adding the new spec.
+ − 1960
+ − 1961 You can retrieve the specifications for a particular locale or locale type
+ − 1962 with the function `specifier-spec-list' or `specifier-specs'.
+ − 1963 */
+ − 1964 (specifier, instantiator, locale, tag_set, how_to_add))
+ − 1965 {
+ − 1966 enum spec_add_meth add_meth;
+ − 1967 Lisp_Object inst_list;
+ − 1968 struct gcpro gcpro1;
+ − 1969
+ − 1970 CHECK_SPECIFIER (specifier);
+ − 1971 check_modifiable_specifier (specifier);
+ − 1972
+ − 1973 locale = decode_locale (locale);
+ − 1974 check_valid_instantiator (instantiator,
+ − 1975 decode_specifier_type
+ − 1976 (Fspecifier_type (specifier), ERROR_ME),
+ − 1977 ERROR_ME);
+ − 1978 /* tag_set might be newly-created material, but it's part of inst_list
+ − 1979 so is properly GC-protected. */
+ − 1980 tag_set = decode_specifier_tag_set (tag_set);
+ − 1981 add_meth = decode_how_to_add_specification (how_to_add);
+ − 1982
+ − 1983 inst_list = list1 (Fcons (tag_set, instantiator));
+ − 1984 GCPRO1 (inst_list);
+ − 1985 specifier_add_spec (specifier, locale, inst_list, add_meth);
+ − 1986 recompute_cached_specifier_everywhere (specifier);
+ − 1987 RETURN_UNGCPRO (Qnil);
+ − 1988 }
+ − 1989
+ − 1990 DEFUN ("add-spec-list-to-specifier", Fadd_spec_list_to_specifier, 2, 3, 0, /*
444
+ − 1991 Add SPEC-LIST (a list of specifications) to SPECIFIER.
+ − 1992 The format of SPEC-LIST is
428
+ − 1993
+ − 1994 ((LOCALE (TAG-SET . INSTANTIATOR) ...) ...)
+ − 1995
+ − 1996 where
+ − 1997 LOCALE := a window, a buffer, a frame, a device, or 'global
+ − 1998 TAG-SET := an unordered list of zero or more TAGS, each of which
+ − 1999 is a symbol
+ − 2000 TAG := a device class (see `valid-device-class-p'), a device type
+ − 2001 (see `valid-console-type-p'), or a tag defined with
+ − 2002 `define-specifier-tag'
+ − 2003 INSTANTIATOR := format determined by the type of specifier
+ − 2004
+ − 2005 The pair (TAG-SET . INSTANTIATOR) is called an `inst-pair'.
+ − 2006 A list of inst-pairs is called an `inst-list'.
+ − 2007 The pair (LOCALE . INST-LIST) is called a `specification' or `spec'.
+ − 2008 A spec-list, then, can be viewed as a list of specifications.
+ − 2009
+ − 2010 HOW-TO-ADD specifies how to combine the new specifications with
+ − 2011 the existing ones, and has the same semantics as for
+ − 2012 `add-spec-to-specifier'.
+ − 2013
+ − 2014 In many circumstances, the higher-level function `set-specifier' is
+ − 2015 more convenient and should be used instead.
+ − 2016 */
+ − 2017 (specifier, spec_list, how_to_add))
+ − 2018 {
+ − 2019 enum spec_add_meth add_meth;
+ − 2020 Lisp_Object rest;
+ − 2021
+ − 2022 CHECK_SPECIFIER (specifier);
+ − 2023 check_modifiable_specifier (specifier);
+ − 2024
+ − 2025 check_valid_spec_list (spec_list,
+ − 2026 decode_specifier_type
+ − 2027 (Fspecifier_type (specifier), ERROR_ME),
+ − 2028 ERROR_ME);
+ − 2029 add_meth = decode_how_to_add_specification (how_to_add);
+ − 2030
+ − 2031 LIST_LOOP (rest, spec_list)
+ − 2032 {
+ − 2033 /* Placating the GCC god. */
+ − 2034 Lisp_Object specification = XCAR (rest);
+ − 2035 Lisp_Object locale = XCAR (specification);
+ − 2036 Lisp_Object inst_list = XCDR (specification);
+ − 2037
+ − 2038 specifier_add_spec (specifier, locale, inst_list, add_meth);
+ − 2039 }
+ − 2040 recompute_cached_specifier_everywhere (specifier);
+ − 2041 return Qnil;
+ − 2042 }
+ − 2043
+ − 2044 void
+ − 2045 add_spec_to_ghost_specifier (Lisp_Object specifier, Lisp_Object instantiator,
+ − 2046 Lisp_Object locale, Lisp_Object tag_set,
+ − 2047 Lisp_Object how_to_add)
+ − 2048 {
+ − 2049 int depth = unlock_ghost_specifiers_protected ();
+ − 2050 Fadd_spec_to_specifier (XSPECIFIER(specifier)->fallback,
+ − 2051 instantiator, locale, tag_set, how_to_add);
771
+ − 2052 unbind_to (depth);
428
+ − 2053 }
+ − 2054
+ − 2055 struct specifier_spec_list_closure
+ − 2056 {
+ − 2057 Lisp_Object head, tail;
+ − 2058 };
+ − 2059
+ − 2060 static int
+ − 2061 specifier_spec_list_mapfun (Lisp_Object specifier,
+ − 2062 Lisp_Object locale,
+ − 2063 enum spec_locale_type locale_type,
+ − 2064 Lisp_Object tag_set,
+ − 2065 int exact_p,
+ − 2066 void *closure)
+ − 2067 {
+ − 2068 struct specifier_spec_list_closure *cl =
+ − 2069 (struct specifier_spec_list_closure *) closure;
+ − 2070 Lisp_Object partial;
+ − 2071
+ − 2072 if (NILP (locale))
+ − 2073 partial = specifier_get_external_spec_list (specifier,
+ − 2074 locale_type,
+ − 2075 tag_set, exact_p);
+ − 2076 else
+ − 2077 {
+ − 2078 partial = specifier_get_external_inst_list (specifier, locale,
+ − 2079 locale_type, tag_set,
+ − 2080 exact_p, 0, 1);
+ − 2081 if (!NILP (partial))
+ − 2082 partial = list1 (Fcons (locale, partial));
+ − 2083 }
+ − 2084 if (NILP (partial))
+ − 2085 return 0;
+ − 2086
+ − 2087 /* tack on the new list */
+ − 2088 if (NILP (cl->tail))
+ − 2089 cl->head = cl->tail = partial;
+ − 2090 else
+ − 2091 XCDR (cl->tail) = partial;
+ − 2092 /* find the new tail */
+ − 2093 while (CONSP (XCDR (cl->tail)))
+ − 2094 cl->tail = XCDR (cl->tail);
+ − 2095 return 0;
+ − 2096 }
+ − 2097
+ − 2098 /* For the given SPECIFIER create and return a list of all specs
+ − 2099 contained within it, subject to LOCALE. If LOCALE is a locale, only
+ − 2100 specs in that locale will be returned. If LOCALE is a locale type,
+ − 2101 all specs in all locales of that type will be returned. If LOCALE is
+ − 2102 nil, all specs will be returned. This always copies lists and never
+ − 2103 returns the actual lists, because we do not want someone manipulating
+ − 2104 the actual objects. This may cause a slight loss of potential
+ − 2105 functionality but if we were to allow it then a user could manage to
+ − 2106 violate our assertion that the specs contained in the actual
+ − 2107 specifier lists are all valid. */
+ − 2108
+ − 2109 DEFUN ("specifier-spec-list", Fspecifier_spec_list, 1, 4, 0, /*
+ − 2110 Return the spec-list of specifications for SPECIFIER in LOCALE.
+ − 2111
+ − 2112 If LOCALE is a particular locale (a buffer, window, frame, device,
+ − 2113 or 'global), a spec-list consisting of the specification for that
+ − 2114 locale will be returned.
+ − 2115
+ − 2116 If LOCALE is a locale type (i.e. 'buffer, 'window, 'frame, or 'device),
+ − 2117 a spec-list of the specifications for all locales of that type will be
+ − 2118 returned.
+ − 2119
+ − 2120 If LOCALE is nil or 'all, a spec-list of all specifications in SPECIFIER
+ − 2121 will be returned.
+ − 2122
+ − 2123 LOCALE can also be a list of locales, locale types, and/or 'all; the
+ − 2124 result is as if `specifier-spec-list' were called on each element of the
+ − 2125 list and the results concatenated together.
+ − 2126
+ − 2127 Only instantiators where TAG-SET (a list of zero or more tags) is a
+ − 2128 subset of (or possibly equal to) the instantiator's tag set are returned.
+ − 2129 \(The default value of nil is a subset of all tag sets, so in this case
+ − 2130 no instantiators will be screened out.) If EXACT-P is non-nil, however,
+ − 2131 TAG-SET must be equal to an instantiator's tag set for the instantiator
+ − 2132 to be returned.
+ − 2133 */
+ − 2134 (specifier, locale, tag_set, exact_p))
+ − 2135 {
+ − 2136 struct specifier_spec_list_closure cl;
+ − 2137 struct gcpro gcpro1, gcpro2;
+ − 2138
+ − 2139 CHECK_SPECIFIER (specifier);
+ − 2140 cl.head = cl.tail = Qnil;
+ − 2141 GCPRO2 (cl.head, cl.tail);
+ − 2142 map_specifier (specifier, locale, specifier_spec_list_mapfun,
+ − 2143 tag_set, exact_p, &cl);
+ − 2144 UNGCPRO;
+ − 2145 return cl.head;
+ − 2146 }
+ − 2147
+ − 2148
+ − 2149 DEFUN ("specifier-specs", Fspecifier_specs, 1, 4, 0, /*
+ − 2150 Return the specification(s) for SPECIFIER in LOCALE.
+ − 2151
+ − 2152 If LOCALE is a single locale or is a list of one element containing a
+ − 2153 single locale, then a "short form" of the instantiators for that locale
+ − 2154 will be returned. Otherwise, this function is identical to
+ − 2155 `specifier-spec-list'.
+ − 2156
+ − 2157 The "short form" is designed for readability and not for ease of use
+ − 2158 in Lisp programs, and is as follows:
+ − 2159
+ − 2160 1. If there is only one instantiator, then an inst-pair (i.e. cons of
+ − 2161 tag and instantiator) will be returned; otherwise a list of
+ − 2162 inst-pairs will be returned.
+ − 2163 2. For each inst-pair returned, if the instantiator's tag is 'any,
+ − 2164 the tag will be removed and the instantiator itself will be returned
+ − 2165 instead of the inst-pair.
+ − 2166 3. If there is only one instantiator, its value is nil, and its tag is
+ − 2167 'any, a one-element list containing nil will be returned rather
+ − 2168 than just nil, to distinguish this case from there being no
+ − 2169 instantiators at all.
+ − 2170 */
+ − 2171 (specifier, locale, tag_set, exact_p))
+ − 2172 {
+ − 2173 if (!NILP (Fvalid_specifier_locale_p (locale)) ||
+ − 2174 (CONSP (locale) && !NILP (Fvalid_specifier_locale_p (XCAR (locale))) &&
+ − 2175 NILP (XCDR (locale))))
+ − 2176 {
+ − 2177 struct gcpro gcpro1;
+ − 2178
+ − 2179 CHECK_SPECIFIER (specifier);
+ − 2180 if (CONSP (locale))
+ − 2181 locale = XCAR (locale);
+ − 2182 GCPRO1 (tag_set);
+ − 2183 tag_set = decode_specifier_tag_set (tag_set);
+ − 2184 tag_set = canonicalize_tag_set (tag_set);
+ − 2185 RETURN_UNGCPRO
+ − 2186 (specifier_get_external_inst_list (specifier, locale,
+ − 2187 locale_type_from_locale (locale),
+ − 2188 tag_set, !NILP (exact_p), 1, 1));
+ − 2189 }
+ − 2190 else
+ − 2191 return Fspecifier_spec_list (specifier, locale, tag_set, exact_p);
+ − 2192 }
+ − 2193
+ − 2194 static int
+ − 2195 remove_specifier_mapfun (Lisp_Object specifier,
+ − 2196 Lisp_Object locale,
+ − 2197 enum spec_locale_type locale_type,
+ − 2198 Lisp_Object tag_set,
+ − 2199 int exact_p,
+ − 2200 void *ignored_closure)
+ − 2201 {
+ − 2202 if (NILP (locale))
+ − 2203 specifier_remove_locale_type (specifier, locale_type, tag_set, exact_p);
+ − 2204 else
+ − 2205 specifier_remove_spec (specifier, locale, locale_type, tag_set, exact_p);
+ − 2206 return 0;
+ − 2207 }
+ − 2208
+ − 2209 DEFUN ("remove-specifier", Fremove_specifier, 1, 4, 0, /*
+ − 2210 Remove specification(s) for SPECIFIER.
+ − 2211
+ − 2212 If LOCALE is a particular locale (a window, buffer, frame, device,
+ − 2213 or 'global), the specification for that locale will be removed.
+ − 2214
+ − 2215 If instead, LOCALE is a locale type (i.e. 'window, 'buffer, 'frame,
+ − 2216 or 'device), the specifications for all locales of that type will be
+ − 2217 removed.
+ − 2218
+ − 2219 If LOCALE is nil or 'all, all specifications will be removed.
+ − 2220
+ − 2221 LOCALE can also be a list of locales, locale types, and/or 'all; this
+ − 2222 is equivalent to calling `remove-specifier' for each of the elements
+ − 2223 in the list.
+ − 2224
+ − 2225 Only instantiators where TAG-SET (a list of zero or more tags) is a
+ − 2226 subset of (or possibly equal to) the instantiator's tag set are removed.
+ − 2227 The default value of nil is a subset of all tag sets, so in this case
+ − 2228 no instantiators will be screened out. If EXACT-P is non-nil, however,
+ − 2229 TAG-SET must be equal to an instantiator's tag set for the instantiator
+ − 2230 to be removed.
+ − 2231 */
+ − 2232 (specifier, locale, tag_set, exact_p))
+ − 2233 {
+ − 2234 CHECK_SPECIFIER (specifier);
+ − 2235 check_modifiable_specifier (specifier);
+ − 2236
+ − 2237 map_specifier (specifier, locale, remove_specifier_mapfun,
+ − 2238 tag_set, exact_p, 0);
+ − 2239 recompute_cached_specifier_everywhere (specifier);
+ − 2240 return Qnil;
+ − 2241 }
+ − 2242
+ − 2243 void
+ − 2244 remove_ghost_specifier (Lisp_Object specifier, Lisp_Object locale,
+ − 2245 Lisp_Object tag_set, Lisp_Object exact_p)
+ − 2246 {
+ − 2247 int depth = unlock_ghost_specifiers_protected ();
+ − 2248 Fremove_specifier (XSPECIFIER(specifier)->fallback,
+ − 2249 locale, tag_set, exact_p);
771
+ − 2250 unbind_to (depth);
428
+ − 2251 }
+ − 2252
+ − 2253 struct copy_specifier_closure
+ − 2254 {
+ − 2255 Lisp_Object dest;
+ − 2256 enum spec_add_meth add_meth;
+ − 2257 int add_meth_is_nil;
+ − 2258 };
+ − 2259
+ − 2260 static int
+ − 2261 copy_specifier_mapfun (Lisp_Object specifier,
+ − 2262 Lisp_Object locale,
+ − 2263 enum spec_locale_type locale_type,
+ − 2264 Lisp_Object tag_set,
+ − 2265 int exact_p,
+ − 2266 void *closure)
+ − 2267 {
+ − 2268 struct copy_specifier_closure *cl =
+ − 2269 (struct copy_specifier_closure *) closure;
+ − 2270
+ − 2271 if (NILP (locale))
+ − 2272 specifier_copy_locale_type (specifier, cl->dest, locale_type,
+ − 2273 tag_set, exact_p,
+ − 2274 cl->add_meth_is_nil ?
+ − 2275 SPEC_REMOVE_LOCALE_TYPE :
+ − 2276 cl->add_meth);
+ − 2277 else
+ − 2278 specifier_copy_spec (specifier, cl->dest, locale, locale_type,
+ − 2279 tag_set, exact_p,
+ − 2280 cl->add_meth_is_nil ? SPEC_REMOVE_LOCALE :
+ − 2281 cl->add_meth);
+ − 2282 return 0;
+ − 2283 }
+ − 2284
+ − 2285 DEFUN ("copy-specifier", Fcopy_specifier, 1, 6, 0, /*
+ − 2286 Copy SPECIFIER to DEST, or create a new one if DEST is nil.
+ − 2287
+ − 2288 If DEST is nil or omitted, a new specifier will be created and the
+ − 2289 specifications copied into it. Otherwise, the specifications will be
+ − 2290 copied into the existing specifier in DEST.
+ − 2291
+ − 2292 If LOCALE is nil or 'all, all specifications will be copied. If LOCALE
+ − 2293 is a particular locale, the specification for that particular locale will
+ − 2294 be copied. If LOCALE is a locale type, the specifications for all locales
+ − 2295 of that type will be copied. LOCALE can also be a list of locales,
+ − 2296 locale types, and/or 'all; this is equivalent to calling `copy-specifier'
+ − 2297 for each of the elements of the list. See `specifier-spec-list' for more
+ − 2298 information about LOCALE.
+ − 2299
+ − 2300 Only instantiators where TAG-SET (a list of zero or more tags) is a
+ − 2301 subset of (or possibly equal to) the instantiator's tag set are copied.
+ − 2302 The default value of nil is a subset of all tag sets, so in this case
+ − 2303 no instantiators will be screened out. If EXACT-P is non-nil, however,
+ − 2304 TAG-SET must be equal to an instantiator's tag set for the instantiator
+ − 2305 to be copied.
+ − 2306
+ − 2307 Optional argument HOW-TO-ADD specifies what to do with existing
+ − 2308 specifications in DEST. If nil, then whichever locales or locale types
+ − 2309 are copied will first be completely erased in DEST. Otherwise, it is
+ − 2310 the same as in `add-spec-to-specifier'.
+ − 2311 */
+ − 2312 (specifier, dest, locale, tag_set, exact_p, how_to_add))
+ − 2313 {
+ − 2314 struct gcpro gcpro1;
+ − 2315 struct copy_specifier_closure cl;
+ − 2316
+ − 2317 CHECK_SPECIFIER (specifier);
+ − 2318 if (NILP (how_to_add))
+ − 2319 cl.add_meth_is_nil = 1;
+ − 2320 else
+ − 2321 cl.add_meth_is_nil = 0;
+ − 2322 cl.add_meth = decode_how_to_add_specification (how_to_add);
+ − 2323 if (NILP (dest))
+ − 2324 {
+ − 2325 /* #### What about copying the extra data? */
+ − 2326 dest = make_specifier (XSPECIFIER (specifier)->methods);
+ − 2327 }
+ − 2328 else
+ − 2329 {
+ − 2330 CHECK_SPECIFIER (dest);
+ − 2331 check_modifiable_specifier (dest);
+ − 2332 if (XSPECIFIER (dest)->methods != XSPECIFIER (specifier)->methods)
563
+ − 2333 invalid_argument ("Specifiers not of same type", Qunbound);
428
+ − 2334 }
+ − 2335
+ − 2336 cl.dest = dest;
+ − 2337 GCPRO1 (dest);
+ − 2338 map_specifier (specifier, locale, copy_specifier_mapfun,
+ − 2339 tag_set, exact_p, &cl);
+ − 2340 UNGCPRO;
+ − 2341 recompute_cached_specifier_everywhere (dest);
+ − 2342 return dest;
+ − 2343 }
+ − 2344
+ − 2345
+ − 2346 /************************************************************************/
+ − 2347 /* Instancing */
+ − 2348 /************************************************************************/
+ − 2349
+ − 2350 static Lisp_Object
+ − 2351 call_validate_matchspec_method (Lisp_Object boxed_method,
+ − 2352 Lisp_Object matchspec)
+ − 2353 {
+ − 2354 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (matchspec);
+ − 2355 return Qt;
+ − 2356 }
+ − 2357
+ − 2358 static Lisp_Object
+ − 2359 check_valid_specifier_matchspec (Lisp_Object matchspec,
+ − 2360 struct specifier_methods *meths,
578
+ − 2361 Error_Behavior errb)
428
+ − 2362 {
+ − 2363 if (meths->validate_matchspec_method)
+ − 2364 {
+ − 2365 Lisp_Object retval;
+ − 2366
+ − 2367 if (ERRB_EQ (errb, ERROR_ME))
+ − 2368 {
+ − 2369 (meths->validate_matchspec_method) (matchspec);
+ − 2370 retval = Qt;
+ − 2371 }
+ − 2372 else
+ − 2373 {
+ − 2374 Lisp_Object opaque =
+ − 2375 make_opaque_ptr ((void *) meths->validate_matchspec_method);
+ − 2376 struct gcpro gcpro1;
+ − 2377
+ − 2378 GCPRO1 (opaque);
+ − 2379 retval = call_with_suspended_errors
+ − 2380 ((lisp_fn_t) call_validate_matchspec_method,
+ − 2381 Qnil, Qspecifier, errb, 2, opaque, matchspec);
+ − 2382
+ − 2383 free_opaque_ptr (opaque);
+ − 2384 UNGCPRO;
+ − 2385 }
+ − 2386
+ − 2387 return retval;
+ − 2388 }
+ − 2389 else
+ − 2390 {
563
+ − 2391 maybe_sferror
428
+ − 2392 ("Matchspecs not allowed for this specifier type",
+ − 2393 intern (meths->name), Qspecifier, errb);
+ − 2394 return Qnil;
+ − 2395 }
+ − 2396 }
+ − 2397
442
+ − 2398 DEFUN ("check-valid-specifier-matchspec", Fcheck_valid_specifier_matchspec, 2,
+ − 2399 2, 0, /*
428
+ − 2400 Signal an error if MATCHSPEC is invalid for SPECIFIER-TYPE.
+ − 2401 See `specifier-matching-instance' for a description of matchspecs.
+ − 2402 */
+ − 2403 (matchspec, specifier_type))
+ − 2404 {
+ − 2405 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 2406 ERROR_ME);
+ − 2407
+ − 2408 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME);
+ − 2409 }
+ − 2410
+ − 2411 DEFUN ("valid-specifier-matchspec-p", Fvalid_specifier_matchspec_p, 2, 2, 0, /*
+ − 2412 Return non-nil if MATCHSPEC is valid for SPECIFIER-TYPE.
+ − 2413 See `specifier-matching-instance' for a description of matchspecs.
+ − 2414 */
+ − 2415 (matchspec, specifier_type))
+ − 2416 {
+ − 2417 struct specifier_methods *meths = decode_specifier_type (specifier_type,
+ − 2418 ERROR_ME);
+ − 2419
+ − 2420 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME_NOT);
+ − 2421 }
+ − 2422
+ − 2423 /* This function is purposely not callable from Lisp. If a Lisp
+ − 2424 caller wants to set a fallback, they should just set the
+ − 2425 global value. */
+ − 2426
+ − 2427 void
+ − 2428 set_specifier_fallback (Lisp_Object specifier, Lisp_Object fallback)
+ − 2429 {
440
+ − 2430 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2431 assert (SPECIFIERP (fallback) ||
+ − 2432 !NILP (Fvalid_inst_list_p (fallback, Fspecifier_type (specifier))));
+ − 2433 if (SPECIFIERP (fallback))
+ − 2434 assert (EQ (Fspecifier_type (specifier), Fspecifier_type (fallback)));
+ − 2435 if (BODILY_SPECIFIER_P (sp))
+ − 2436 GHOST_SPECIFIER(sp)->fallback = fallback;
+ − 2437 else
+ − 2438 sp->fallback = fallback;
+ − 2439 /* call the after-change method */
+ − 2440 MAYBE_SPECMETH (sp, after_change,
+ − 2441 (bodily_specifier (specifier), Qfallback));
+ − 2442 recompute_cached_specifier_everywhere (specifier);
+ − 2443 }
+ − 2444
+ − 2445 DEFUN ("specifier-fallback", Fspecifier_fallback, 1, 1, 0, /*
+ − 2446 Return the fallback value for SPECIFIER.
+ − 2447 Fallback values are provided by the C code for certain built-in
+ − 2448 specifiers to make sure that instancing won't fail even if all
+ − 2449 specs are removed from the specifier, or to implement simple
+ − 2450 inheritance behavior (e.g. this method is used to ensure that
+ − 2451 faces other than 'default inherit their attributes from 'default).
+ − 2452 By design, you cannot change the fallback value, and specifiers
+ − 2453 created with `make-specifier' will never have a fallback (although
+ − 2454 a similar, Lisp-accessible capability may be provided in the future
+ − 2455 to allow for inheritance).
+ − 2456
+ − 2457 The fallback value will be an inst-list that is instanced like
+ − 2458 any other inst-list, a specifier of the same type as SPECIFIER
+ − 2459 \(results in inheritance), or nil for no fallback.
+ − 2460
+ − 2461 When you instance a specifier, you can explicitly request that the
+ − 2462 fallback not be consulted. (The C code does this, for example, when
+ − 2463 merging faces.) See `specifier-instance'.
+ − 2464 */
+ − 2465 (specifier))
+ − 2466 {
+ − 2467 CHECK_SPECIFIER (specifier);
+ − 2468 return Fcopy_tree (XSPECIFIER (specifier)->fallback, Qt);
+ − 2469 }
+ − 2470
+ − 2471 static Lisp_Object
+ − 2472 specifier_instance_from_inst_list (Lisp_Object specifier,
+ − 2473 Lisp_Object matchspec,
+ − 2474 Lisp_Object domain,
+ − 2475 Lisp_Object inst_list,
578
+ − 2476 Error_Behavior errb, int no_quit,
428
+ − 2477 Lisp_Object depth)
+ − 2478 {
+ − 2479 /* This function can GC */
440
+ − 2480 Lisp_Specifier *sp;
428
+ − 2481 Lisp_Object device;
+ − 2482 Lisp_Object rest;
+ − 2483 int count = specpdl_depth ();
+ − 2484 struct gcpro gcpro1, gcpro2;
+ − 2485
+ − 2486 GCPRO2 (specifier, inst_list);
+ − 2487
+ − 2488 sp = XSPECIFIER (specifier);
442
+ − 2489 device = DOMAIN_DEVICE (domain);
428
+ − 2490
+ − 2491 if (no_quit)
+ − 2492 /* The instantiate method is allowed to call eval. Since it
+ − 2493 is quite common for this function to get called from somewhere in
+ − 2494 redisplay we need to make sure that quits are ignored. Otherwise
+ − 2495 Fsignal will abort. */
+ − 2496 specbind (Qinhibit_quit, Qt);
+ − 2497
+ − 2498 LIST_LOOP (rest, inst_list)
+ − 2499 {
+ − 2500 Lisp_Object tagged_inst = XCAR (rest);
+ − 2501 Lisp_Object tag_set = XCAR (tagged_inst);
+ − 2502
+ − 2503 if (device_matches_specifier_tag_set_p (device, tag_set))
+ − 2504 {
+ − 2505 Lisp_Object val = XCDR (tagged_inst);
+ − 2506
+ − 2507 if (HAS_SPECMETH_P (sp, instantiate))
+ − 2508 val = call_with_suspended_errors
+ − 2509 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate),
+ − 2510 Qunbound, Qspecifier, errb, 5, specifier,
+ − 2511 matchspec, domain, val, depth);
+ − 2512
+ − 2513 if (!UNBOUNDP (val))
+ − 2514 {
771
+ − 2515 unbind_to (count);
428
+ − 2516 UNGCPRO;
+ − 2517 return val;
+ − 2518 }
+ − 2519 }
+ − 2520 }
+ − 2521
771
+ − 2522 unbind_to (count);
428
+ − 2523 UNGCPRO;
+ − 2524 return Qunbound;
+ − 2525 }
+ − 2526
+ − 2527 /* Given a SPECIFIER and a DOMAIN, return a specific instance for that
+ − 2528 specifier. Try to find one by checking the specifier types from most
+ − 2529 specific (buffer) to most general (global). If we find an instance,
+ − 2530 return it. Otherwise return Qunbound. */
+ − 2531
+ − 2532 #define CHECK_INSTANCE_ENTRY(key, matchspec, type) do { \
+ − 2533 Lisp_Object *CIE_inst_list = \
+ − 2534 specifier_get_inst_list (specifier, key, type); \
+ − 2535 if (CIE_inst_list) \
+ − 2536 { \
+ − 2537 Lisp_Object CIE_val = \
+ − 2538 specifier_instance_from_inst_list (specifier, matchspec, \
+ − 2539 domain, *CIE_inst_list, \
+ − 2540 errb, no_quit, depth); \
+ − 2541 if (!UNBOUNDP (CIE_val)) \
+ − 2542 return CIE_val; \
+ − 2543 } \
+ − 2544 } while (0)
+ − 2545
+ − 2546 /* We accept any window, frame or device domain and do our checking
+ − 2547 starting from as specific a locale type as we can determine from the
+ − 2548 domain we are passed and going on up through as many other locale types
+ − 2549 as we can determine. In practice, when called from redisplay the
+ − 2550 arg will usually be a window and occasionally a frame. If
+ − 2551 triggered by a user call, who knows what it will usually be. */
+ − 2552 Lisp_Object
+ − 2553 specifier_instance (Lisp_Object specifier, Lisp_Object matchspec,
578
+ − 2554 Lisp_Object domain, Error_Behavior errb, int no_quit,
428
+ − 2555 int no_fallback, Lisp_Object depth)
+ − 2556 {
+ − 2557 Lisp_Object buffer = Qnil;
+ − 2558 Lisp_Object window = Qnil;
+ − 2559 Lisp_Object frame = Qnil;
+ − 2560 Lisp_Object device = Qnil;
444
+ − 2561 Lisp_Object tag = Qnil; /* #### currently unused */
+ − 2562 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2563
+ − 2564 /* Attempt to determine buffer, window, frame, and device from the
+ − 2565 domain. */
442
+ − 2566 /* #### get image instances out of domains! */
+ − 2567 if (IMAGE_INSTANCEP (domain))
+ − 2568 window = DOMAIN_WINDOW (domain);
+ − 2569 else if (WINDOWP (domain))
428
+ − 2570 window = domain;
+ − 2571 else if (FRAMEP (domain))
+ − 2572 frame = domain;
+ − 2573 else if (DEVICEP (domain))
+ − 2574 device = domain;
+ − 2575 else
442
+ − 2576 /* dmoore writes: [dammit, this should just signal an error or something
+ − 2577 shouldn't it?]
+ − 2578
+ − 2579 No. Errors are handled in Lisp primitives implementation.
428
+ − 2580 Invalid domain is a design error here - kkm. */
+ − 2581 abort ();
+ − 2582
+ − 2583 if (NILP (buffer) && !NILP (window))
444
+ − 2584 buffer = WINDOW_BUFFER (XWINDOW (window));
428
+ − 2585 if (NILP (frame) && !NILP (window))
+ − 2586 frame = XWINDOW (window)->frame;
+ − 2587 if (NILP (device))
+ − 2588 /* frame had better exist; if device is undeterminable, something
+ − 2589 really went wrong. */
444
+ − 2590 device = FRAME_DEVICE (XFRAME (frame));
428
+ − 2591
+ − 2592 /* device had better be determined by now; abort if not. */
444
+ − 2593 tag = DEVICE_CLASS (XDEVICE (device));
428
+ − 2594
+ − 2595 depth = make_int (1 + XINT (depth));
+ − 2596 if (XINT (depth) > 20)
+ − 2597 {
563
+ − 2598 maybe_signal_error (Qstack_overflow,
+ − 2599 "Apparent loop in specifier inheritance",
+ − 2600 Qunbound, Qspecifier, errb);
428
+ − 2601 /* The specification is fucked; at least try the fallback
+ − 2602 (which better not be fucked, because it's not changeable
+ − 2603 from Lisp). */
+ − 2604 depth = Qzero;
+ − 2605 goto do_fallback;
+ − 2606 }
+ − 2607
434
+ − 2608 retry:
428
+ − 2609 /* First see if we can generate one from the window specifiers. */
+ − 2610 if (!NILP (window))
+ − 2611 CHECK_INSTANCE_ENTRY (window, matchspec, LOCALE_WINDOW);
+ − 2612
+ − 2613 /* Next see if we can generate one from the buffer specifiers. */
+ − 2614 if (!NILP (buffer))
+ − 2615 CHECK_INSTANCE_ENTRY (buffer, matchspec, LOCALE_BUFFER);
+ − 2616
+ − 2617 /* Next see if we can generate one from the frame specifiers. */
+ − 2618 if (!NILP (frame))
+ − 2619 CHECK_INSTANCE_ENTRY (frame, matchspec, LOCALE_FRAME);
+ − 2620
+ − 2621 /* If we still haven't succeeded try with the device specifiers. */
+ − 2622 CHECK_INSTANCE_ENTRY (device, matchspec, LOCALE_DEVICE);
+ − 2623
+ − 2624 /* Last and least try the global specifiers. */
+ − 2625 CHECK_INSTANCE_ENTRY (Qglobal, matchspec, LOCALE_GLOBAL);
+ − 2626
434
+ − 2627 do_fallback:
428
+ − 2628 /* We're out of specifiers and we still haven't generated an
+ − 2629 instance. At least try the fallback ... If this fails,
+ − 2630 then we just return Qunbound. */
+ − 2631
+ − 2632 if (no_fallback || NILP (sp->fallback))
+ − 2633 /* I said, I don't want the fallbacks. */
+ − 2634 return Qunbound;
+ − 2635
+ − 2636 if (SPECIFIERP (sp->fallback))
+ − 2637 {
+ − 2638 /* If you introduced loops in the default specifier chain,
+ − 2639 then you're fucked, so you better not do this. */
+ − 2640 specifier = sp->fallback;
+ − 2641 sp = XSPECIFIER (specifier);
+ − 2642 goto retry;
+ − 2643 }
+ − 2644
+ − 2645 assert (CONSP (sp->fallback));
+ − 2646 return specifier_instance_from_inst_list (specifier, matchspec, domain,
+ − 2647 sp->fallback, errb, no_quit,
+ − 2648 depth);
+ − 2649 }
+ − 2650 #undef CHECK_INSTANCE_ENTRY
+ − 2651
+ − 2652 Lisp_Object
+ − 2653 specifier_instance_no_quit (Lisp_Object specifier, Lisp_Object matchspec,
578
+ − 2654 Lisp_Object domain, Error_Behavior errb,
428
+ − 2655 int no_fallback, Lisp_Object depth)
+ − 2656 {
+ − 2657 return specifier_instance (specifier, matchspec, domain, errb,
+ − 2658 1, no_fallback, depth);
+ − 2659 }
+ − 2660
+ − 2661 DEFUN ("specifier-instance", Fspecifier_instance, 1, 4, 0, /*
+ − 2662 Instantiate SPECIFIER (return its value) in DOMAIN.
+ − 2663 If no instance can be generated for this domain, return DEFAULT.
+ − 2664
+ − 2665 DOMAIN should be a window, frame, or device. Other values that are legal
+ − 2666 as a locale (e.g. a buffer) are not valid as a domain because they do not
+ − 2667 provide enough information to identify a particular device (see
+ − 2668 `valid-specifier-domain-p'). DOMAIN defaults to the selected window
+ − 2669 if omitted.
+ − 2670
+ − 2671 "Instantiating" a specifier in a particular domain means determining
+ − 2672 the specifier's "value" in that domain. This is accomplished by
+ − 2673 searching through the specifications in the specifier that correspond
+ − 2674 to all locales that can be derived from the given domain, from specific
+ − 2675 to general. In most cases, the domain is an Emacs window. In that case
+ − 2676 specifications are searched for as follows:
+ − 2677
+ − 2678 1. A specification whose locale is the window itself;
+ − 2679 2. A specification whose locale is the window's buffer;
+ − 2680 3. A specification whose locale is the window's frame;
+ − 2681 4. A specification whose locale is the window's frame's device;
+ − 2682 5. A specification whose locale is 'global.
+ − 2683
+ − 2684 If all of those fail, then the C-code-provided fallback value for
+ − 2685 this specifier is consulted (see `specifier-fallback'). If it is
+ − 2686 an inst-list, then this function attempts to instantiate that list
+ − 2687 just as when a specification is located in the first five steps above.
+ − 2688 If the fallback is a specifier, `specifier-instance' is called
+ − 2689 recursively on this specifier and the return value used. Note,
+ − 2690 however, that if the optional argument NO-FALLBACK is non-nil,
+ − 2691 the fallback value will not be consulted.
+ − 2692
+ − 2693 Note that there may be more than one specification matching a particular
+ − 2694 locale; all such specifications are considered before looking for any
+ − 2695 specifications for more general locales. Any particular specification
+ − 2696 that is found may be rejected because its tag set does not match the
+ − 2697 device being instantiated over, or because the specification is not
+ − 2698 valid for the device of the given domain (e.g. the font or color name
+ − 2699 does not exist for this particular X server).
+ − 2700
793
+ − 2701 NOTE: When errors occur in the process of trying a particular instantiator,
+ − 2702 and the instantiator is thus skipped, warnings will be issued at level
+ − 2703 `debug'. Normally, such warnings are ignored entirely, but you can change
+ − 2704 this by setting `log-warning-minimum-level'. This is useful if you're
+ − 2705 trying to debug why particular instantiators are not being processed.
+ − 2706
428
+ − 2707 The returned value is dependent on the type of specifier. For example,
+ − 2708 for a font specifier (as returned by the `face-font' function), the returned
+ − 2709 value will be a font-instance object. For glyphs, the returned value
+ − 2710 will be a string, pixmap, or subwindow.
+ − 2711
+ − 2712 See also `specifier-matching-instance'.
+ − 2713 */
+ − 2714 (specifier, domain, default_, no_fallback))
+ − 2715 {
+ − 2716 Lisp_Object instance;
+ − 2717
+ − 2718 CHECK_SPECIFIER (specifier);
+ − 2719 domain = decode_domain (domain);
+ − 2720
+ − 2721 instance = specifier_instance (specifier, Qunbound, domain, ERROR_ME, 0,
+ − 2722 !NILP (no_fallback), Qzero);
+ − 2723 return UNBOUNDP (instance) ? default_ : instance;
+ − 2724 }
+ − 2725
+ − 2726 DEFUN ("specifier-matching-instance", Fspecifier_matching_instance, 2, 5, 0, /*
+ − 2727 Return an instance for SPECIFIER in DOMAIN that matches MATCHSPEC.
+ − 2728 If no instance can be generated for this domain, return DEFAULT.
+ − 2729
+ − 2730 This function is identical to `specifier-instance' except that a
+ − 2731 specification will only be considered if it matches MATCHSPEC.
+ − 2732 The definition of "match", and allowed values for MATCHSPEC, are
+ − 2733 dependent on the particular type of specifier. Here are some examples:
+ − 2734
+ − 2735 -- For chartable (e.g. display table) specifiers, MATCHSPEC should be a
+ − 2736 character, and the specification (a chartable) must give a value for
+ − 2737 that character in order to be considered. This allows you to specify,
+ − 2738 e.g., a buffer-local display table that only gives values for particular
+ − 2739 characters. All other characters are handled as if the buffer-local
+ − 2740 display table is not there. (Chartable specifiers are not yet
+ − 2741 implemented.)
+ − 2742
872
+ − 2743 -- For font specifiers, MATCHSPEC should be a list (CHARSET . SECOND-STAGE-P),
+ − 2744 and the specification (a font string) must have a registry that matches
+ − 2745 the charset's registry. (This only makes sense with Mule support.) This
+ − 2746 makes it easy to choose a font that can display a particular
+ − 2747 character. (This is what redisplay does, in fact.) SECOND-STAGE-P means
+ − 2748 to ignore the font's registry and instead look at the characters in the
+ − 2749 font to see if the font can support the charset. This currently only makes
+ − 2750 sense under MS Windows.
428
+ − 2751 */
+ − 2752 (specifier, matchspec, domain, default_, no_fallback))
+ − 2753 {
+ − 2754 Lisp_Object instance;
+ − 2755
+ − 2756 CHECK_SPECIFIER (specifier);
+ − 2757 check_valid_specifier_matchspec (matchspec, XSPECIFIER (specifier)->methods,
+ − 2758 ERROR_ME);
+ − 2759 domain = decode_domain (domain);
+ − 2760
+ − 2761 instance = specifier_instance (specifier, matchspec, domain, ERROR_ME,
+ − 2762 0, !NILP (no_fallback), Qzero);
+ − 2763 return UNBOUNDP (instance) ? default_ : instance;
+ − 2764 }
+ − 2765
+ − 2766 DEFUN ("specifier-instance-from-inst-list", Fspecifier_instance_from_inst_list,
+ − 2767 3, 4, 0, /*
+ − 2768 Attempt to convert a particular inst-list into an instance.
+ − 2769 This attempts to instantiate INST-LIST in the given DOMAIN,
+ − 2770 as if INST-LIST existed in a specification in SPECIFIER. If
+ − 2771 the instantiation fails, DEFAULT is returned. In most circumstances,
+ − 2772 you should not use this function; use `specifier-instance' instead.
+ − 2773 */
+ − 2774 (specifier, domain, inst_list, default_))
+ − 2775 {
+ − 2776 Lisp_Object val = Qunbound;
440
+ − 2777 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2778 struct gcpro gcpro1;
+ − 2779 Lisp_Object built_up_list = Qnil;
+ − 2780
+ − 2781 CHECK_SPECIFIER (specifier);
+ − 2782 check_valid_domain (domain);
+ − 2783 check_valid_inst_list (inst_list, sp->methods, ERROR_ME);
+ − 2784 GCPRO1 (built_up_list);
+ − 2785 built_up_list = build_up_processed_list (specifier, domain, inst_list);
+ − 2786 if (!NILP (built_up_list))
+ − 2787 val = specifier_instance_from_inst_list (specifier, Qunbound, domain,
+ − 2788 built_up_list, ERROR_ME,
+ − 2789 0, Qzero);
+ − 2790 UNGCPRO;
+ − 2791 return UNBOUNDP (val) ? default_ : val;
+ − 2792 }
+ − 2793
442
+ − 2794 DEFUN ("specifier-matching-instance-from-inst-list",
+ − 2795 Fspecifier_matching_instance_from_inst_list,
428
+ − 2796 4, 5, 0, /*
+ − 2797 Attempt to convert a particular inst-list into an instance.
+ − 2798 This attempts to instantiate INST-LIST in the given DOMAIN
+ − 2799 \(as if INST-LIST existed in a specification in SPECIFIER),
+ − 2800 matching the specifications against MATCHSPEC.
+ − 2801
+ − 2802 This function is analogous to `specifier-instance-from-inst-list'
+ − 2803 but allows for specification-matching as in `specifier-matching-instance'.
+ − 2804 See that function for a description of exactly how the matching process
+ − 2805 works.
+ − 2806 */
+ − 2807 (specifier, matchspec, domain, inst_list, default_))
+ − 2808 {
+ − 2809 Lisp_Object val = Qunbound;
440
+ − 2810 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2811 struct gcpro gcpro1;
+ − 2812 Lisp_Object built_up_list = Qnil;
+ − 2813
+ − 2814 CHECK_SPECIFIER (specifier);
+ − 2815 check_valid_specifier_matchspec (matchspec, XSPECIFIER (specifier)->methods,
+ − 2816 ERROR_ME);
+ − 2817 check_valid_domain (domain);
+ − 2818 check_valid_inst_list (inst_list, sp->methods, ERROR_ME);
+ − 2819 GCPRO1 (built_up_list);
+ − 2820 built_up_list = build_up_processed_list (specifier, domain, inst_list);
+ − 2821 if (!NILP (built_up_list))
+ − 2822 val = specifier_instance_from_inst_list (specifier, matchspec, domain,
+ − 2823 built_up_list, ERROR_ME,
+ − 2824 0, Qzero);
+ − 2825 UNGCPRO;
+ − 2826 return UNBOUNDP (val) ? default_ : val;
+ − 2827 }
+ − 2828
+ − 2829
+ − 2830 /************************************************************************/
+ − 2831 /* Caching in the struct window or frame */
+ − 2832 /************************************************************************/
+ − 2833
853
+ − 2834 /* Cause the current value of SPECIFIER in the domain of each frame and/or
+ − 2835 window to be cached in the struct frame at STRUCT_FRAME_OFFSET and the
+ − 2836 struct window at STRUCT_WINDOW_OFFSET. When the value changes in a
+ − 2837 particular window, VALUE_CHANGED_IN_WINDOW is called. When the value
+ − 2838 changes in a particular frame, VALUE_CHANGED_IN_FRAME is called.
+ − 2839
+ − 2840 Either STRUCT_WINDOW_OFFSET or STRUCT_FRAME_OFFSET can be 0 to indicate
+ − 2841 no caching in that sort of object. However, if they're not 0, you
+ − 2842 must supply a corresponding value-changed function. (This is the case
+ − 2843 so that you are forced to consider the ramifications of a value change.
+ − 2844 You nearly always need to do something, e.g. set a dirty flag.)
+ − 2845
+ − 2846 If you create a built-in specifier, you should do the following:
+ − 2847
+ − 2848 - Make sure the file you create the specifier in has a
+ − 2849 specifier_vars_of_foo() function. If not, create it, declare it in
+ − 2850 symsinit.h, and make sure it's called in the appropriate place in
+ − 2851 emacs.c.
+ − 2852 - In specifier_vars_of_foo(), do a DEFVAR_SPECIFIER(), followed by
+ − 2853 initializing the specifier using Fmake_specifier(), followed by
+ − 2854 set_specifier_fallback(), followed (optionally) by
+ − 2855 set_specifier_caching().
+ − 2856 - If you used set_specifier_caching(), make sure to create the
+ − 2857 appropriate value-changed functions. Also make sure to add the
+ − 2858 appropriate slots where the values are cached to frameslots.h and
+ − 2859 winslots.h.
+ − 2860
+ − 2861 Do a grep for menubar_visible_p for an example.
+ − 2862 */
428
+ − 2863
+ − 2864 /* #### It would be nice if the specifier caching automatically knew
+ − 2865 about specifier fallbacks, so we didn't have to do it ourselves. */
+ − 2866
+ − 2867 void
+ − 2868 set_specifier_caching (Lisp_Object specifier, int struct_window_offset,
+ − 2869 void (*value_changed_in_window)
+ − 2870 (Lisp_Object specifier, struct window *w,
+ − 2871 Lisp_Object oldval),
+ − 2872 int struct_frame_offset,
+ − 2873 void (*value_changed_in_frame)
+ − 2874 (Lisp_Object specifier, struct frame *f,
444
+ − 2875 Lisp_Object oldval),
+ − 2876 int always_recompute)
428
+ − 2877 {
440
+ − 2878 Lisp_Specifier *sp = XSPECIFIER (specifier);
428
+ − 2879 assert (!GHOST_SPECIFIER_P (sp));
+ − 2880
+ − 2881 if (!sp->caching)
+ − 2882 sp->caching = xnew_and_zero (struct specifier_caching);
+ − 2883 sp->caching->offset_into_struct_window = struct_window_offset;
+ − 2884 sp->caching->value_changed_in_window = value_changed_in_window;
+ − 2885 sp->caching->offset_into_struct_frame = struct_frame_offset;
+ − 2886 sp->caching->value_changed_in_frame = value_changed_in_frame;
853
+ − 2887 if (struct_window_offset)
+ − 2888 assert (value_changed_in_window);
+ − 2889 if (struct_frame_offset)
+ − 2890 assert (value_changed_in_frame);
444
+ − 2891 sp->caching->always_recompute = always_recompute;
428
+ − 2892 Vcached_specifiers = Fcons (specifier, Vcached_specifiers);
+ − 2893 if (BODILY_SPECIFIER_P (sp))
+ − 2894 GHOST_SPECIFIER(sp)->caching = sp->caching;
+ − 2895 recompute_cached_specifier_everywhere (specifier);
+ − 2896 }
+ − 2897
+ − 2898 static void
+ − 2899 recompute_one_cached_specifier_in_window (Lisp_Object specifier,
+ − 2900 struct window *w)
+ − 2901 {
+ − 2902 Lisp_Object window;
444
+ − 2903 Lisp_Object newval, *location, oldval;
428
+ − 2904
+ − 2905 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier)));
+ − 2906
793
+ − 2907 window = wrap_window (w);
428
+ − 2908
+ − 2909 newval = specifier_instance (specifier, Qunbound, window, ERROR_ME_WARN,
+ − 2910 0, 0, Qzero);
+ − 2911 /* If newval ended up Qunbound, then the calling functions
+ − 2912 better be able to deal. If not, set a default so this
+ − 2913 never happens or correct it in the value_changed_in_window
+ − 2914 method. */
+ − 2915 location = (Lisp_Object *)
+ − 2916 ((char *) w + XSPECIFIER (specifier)->caching->offset_into_struct_window);
442
+ − 2917 /* #### What's the point of this check, other than to optimize image
+ − 2918 instance instantiation? Unless you specify a caching instantiate
+ − 2919 method the instantiation that specifier_instance will do will
+ − 2920 always create a new copy. Thus EQ will always fail. Unfortunately
+ − 2921 calling equal is no good either as this doesn't take into account
+ − 2922 things attached to the specifier - for instance strings on
+ − 2923 extents. --andyp */
444
+ − 2924 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute)
428
+ − 2925 {
444
+ − 2926 oldval = *location;
428
+ − 2927 *location = newval;
+ − 2928 (XSPECIFIER (specifier)->caching->value_changed_in_window)
+ − 2929 (specifier, w, oldval);
+ − 2930 }
+ − 2931 }
+ − 2932
+ − 2933 static void
+ − 2934 recompute_one_cached_specifier_in_frame (Lisp_Object specifier,
+ − 2935 struct frame *f)
+ − 2936 {
+ − 2937 Lisp_Object frame;
444
+ − 2938 Lisp_Object newval, *location, oldval;
428
+ − 2939
+ − 2940 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier)));
+ − 2941
793
+ − 2942 frame = wrap_frame (f);
428
+ − 2943
+ − 2944 newval = specifier_instance (specifier, Qunbound, frame, ERROR_ME_WARN,
+ − 2945 0, 0, Qzero);
+ − 2946 /* If newval ended up Qunbound, then the calling functions
+ − 2947 better be able to deal. If not, set a default so this
+ − 2948 never happens or correct it in the value_changed_in_frame
+ − 2949 method. */
+ − 2950 location = (Lisp_Object *)
+ − 2951 ((char *) f + XSPECIFIER (specifier)->caching->offset_into_struct_frame);
444
+ − 2952 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute)
428
+ − 2953 {
444
+ − 2954 oldval = *location;
428
+ − 2955 *location = newval;
+ − 2956 (XSPECIFIER (specifier)->caching->value_changed_in_frame)
+ − 2957 (specifier, f, oldval);
+ − 2958 }
+ − 2959 }
+ − 2960
+ − 2961 void
+ − 2962 recompute_all_cached_specifiers_in_window (struct window *w)
+ − 2963 {
+ − 2964 Lisp_Object rest;
+ − 2965
+ − 2966 LIST_LOOP (rest, Vcached_specifiers)
+ − 2967 {
+ − 2968 Lisp_Object specifier = XCAR (rest);
+ − 2969 if (XSPECIFIER (specifier)->caching->offset_into_struct_window)
+ − 2970 recompute_one_cached_specifier_in_window (specifier, w);
+ − 2971 }
+ − 2972 }
+ − 2973
+ − 2974 void
+ − 2975 recompute_all_cached_specifiers_in_frame (struct frame *f)
+ − 2976 {
+ − 2977 Lisp_Object rest;
+ − 2978
+ − 2979 LIST_LOOP (rest, Vcached_specifiers)
+ − 2980 {
+ − 2981 Lisp_Object specifier = XCAR (rest);
+ − 2982 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame)
+ − 2983 recompute_one_cached_specifier_in_frame (specifier, f);
+ − 2984 }
+ − 2985 }
+ − 2986
+ − 2987 static int
+ − 2988 recompute_cached_specifier_everywhere_mapfun (struct window *w,
+ − 2989 void *closure)
+ − 2990 {
+ − 2991 Lisp_Object specifier = Qnil;
+ − 2992
826
+ − 2993 specifier = VOID_TO_LISP (closure);
428
+ − 2994 recompute_one_cached_specifier_in_window (specifier, w);
+ − 2995 return 0;
+ − 2996 }
+ − 2997
+ − 2998 static void
+ − 2999 recompute_cached_specifier_everywhere (Lisp_Object specifier)
+ − 3000 {
+ − 3001 Lisp_Object frmcons, devcons, concons;
+ − 3002
+ − 3003 specifier = bodily_specifier (specifier);
+ − 3004
+ − 3005 if (!XSPECIFIER (specifier)->caching)
+ − 3006 return;
+ − 3007
+ − 3008 if (XSPECIFIER (specifier)->caching->offset_into_struct_window)
+ − 3009 {
+ − 3010 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
+ − 3011 map_windows (XFRAME (XCAR (frmcons)),
+ − 3012 recompute_cached_specifier_everywhere_mapfun,
+ − 3013 LISP_TO_VOID (specifier));
+ − 3014 }
+ − 3015
+ − 3016 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame)
+ − 3017 {
+ − 3018 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
+ − 3019 recompute_one_cached_specifier_in_frame (specifier,
+ − 3020 XFRAME (XCAR (frmcons)));
+ − 3021 }
+ − 3022 }
+ − 3023
+ − 3024 DEFUN ("set-specifier-dirty-flag", Fset_specifier_dirty_flag, 1, 1, 0, /*
+ − 3025 Force recomputation of any caches associated with SPECIFIER.
+ − 3026 Note that this automatically happens whenever you change a specification
+ − 3027 in SPECIFIER; you do not have to call this function then.
+ − 3028 One example of where this function is useful is when you have a
+ − 3029 toolbar button whose `active-p' field is an expression to be
+ − 3030 evaluated. Calling `set-specifier-dirty-flag' on the
+ − 3031 toolbar specifier will force the `active-p' fields to be
+ − 3032 recomputed.
+ − 3033 */
+ − 3034 (specifier))
+ − 3035 {
+ − 3036 CHECK_SPECIFIER (specifier);
+ − 3037 recompute_cached_specifier_everywhere (specifier);
+ − 3038 return Qnil;
+ − 3039 }
+ − 3040
+ − 3041
+ − 3042 /************************************************************************/
+ − 3043 /* Generic specifier type */
+ − 3044 /************************************************************************/
+ − 3045
+ − 3046 DEFINE_SPECIFIER_TYPE (generic);
+ − 3047
+ − 3048 #if 0
+ − 3049
+ − 3050 /* This is the string that used to be in `generic-specifier-p'.
+ − 3051 The idea is good, but it doesn't quite work in the form it's
+ − 3052 in. (One major problem is that validating an instantiator
+ − 3053 is supposed to require only that the specifier type is passed,
+ − 3054 while with this approach the actual specifier is needed.)
+ − 3055
+ − 3056 What really needs to be done is to write a function
+ − 3057 `make-specifier-type' that creates new specifier types.
442
+ − 3058
+ − 3059 #### [I'll look into this for 19.14.] Well, sometime. (Currently
+ − 3060 May 2000, 21.2 is in development. 19.14 was released in June 1996.) */
428
+ − 3061
+ − 3062 "A generic specifier is a generalized kind of specifier with user-defined\n"
+ − 3063 "semantics. The instantiator can be any kind of Lisp object, and the\n"
+ − 3064 "instance computed from it is likewise any kind of Lisp object. The\n"
+ − 3065 "SPECIFIER-DATA should be an alist of methods governing how the specifier\n"
+ − 3066 "works. All methods are optional, and reasonable default methods will be\n"
+ − 3067 "provided. Currently there are two defined methods: 'instantiate and\n"
+ − 3068 "'validate.\n"
+ − 3069 "\n"
+ − 3070 "'instantiate specifies how to do the instantiation; if omitted, the\n"
+ − 3071 "instantiator itself is simply returned as the instance. The method\n"
+ − 3072 "should be a function that accepts three parameters (a specifier, the\n"
+ − 3073 "instantiator that matched the domain being instantiated over, and that\n"
+ − 3074 "domain), and should return a one-element list containing the instance,\n"
+ − 3075 "or nil if no instance exists. Note that the domain passed to this function\n"
+ − 3076 "is the domain being instantiated over, which may not be the same as the\n"
+ − 3077 "locale contained in the specification corresponding to the instantiator\n"
+ − 3078 "(for example, the domain being instantiated over could be a window, but\n"
+ − 3079 "the locale corresponding to the passed instantiator could be the window's\n"
+ − 3080 "buffer or frame).\n"
+ − 3081 "\n"
+ − 3082 "'validate specifies whether a given instantiator is valid; if omitted,\n"
+ − 3083 "all instantiators are considered valid. It should be a function of\n"
+ − 3084 "two arguments: an instantiator and a flag CAN-SIGNAL-ERROR. If this\n"
+ − 3085 "flag is false, the function must simply return t or nil indicating\n"
+ − 3086 "whether the instantiator is valid. If this flag is true, the function\n"
+ − 3087 "is free to signal an error if it encounters an invalid instantiator\n"
+ − 3088 "(this can be useful for issuing a specific error about exactly why the\n"
+ − 3089 "instantiator is valid). It can also return nil to indicate an invalid\n"
+ − 3090 "instantiator; in this case, a general error will be signalled."
+ − 3091
+ − 3092 #endif /* 0 */
+ − 3093
+ − 3094 DEFUN ("generic-specifier-p", Fgeneric_specifier_p, 1, 1, 0, /*
+ − 3095 Return non-nil if OBJECT is a generic specifier.
+ − 3096
442
+ − 3097 See `make-generic-specifier' for a description of possible generic
+ − 3098 instantiators.
428
+ − 3099 */
+ − 3100 (object))
+ − 3101 {
+ − 3102 return GENERIC_SPECIFIERP (object) ? Qt : Qnil;
+ − 3103 }
+ − 3104
+ − 3105
+ − 3106 /************************************************************************/
+ − 3107 /* Integer specifier type */
+ − 3108 /************************************************************************/
+ − 3109
+ − 3110 DEFINE_SPECIFIER_TYPE (integer);
+ − 3111
+ − 3112 static void
+ − 3113 integer_validate (Lisp_Object instantiator)
+ − 3114 {
+ − 3115 CHECK_INT (instantiator);
+ − 3116 }
+ − 3117
+ − 3118 DEFUN ("integer-specifier-p", Finteger_specifier_p, 1, 1, 0, /*
+ − 3119 Return non-nil if OBJECT is an integer specifier.
442
+ − 3120
+ − 3121 See `make-integer-specifier' for a description of possible integer
+ − 3122 instantiators.
428
+ − 3123 */
+ − 3124 (object))
+ − 3125 {
+ − 3126 return INTEGER_SPECIFIERP (object) ? Qt : Qnil;
+ − 3127 }
+ − 3128
+ − 3129 /************************************************************************/
+ − 3130 /* Non-negative-integer specifier type */
+ − 3131 /************************************************************************/
+ − 3132
+ − 3133 DEFINE_SPECIFIER_TYPE (natnum);
+ − 3134
+ − 3135 static void
+ − 3136 natnum_validate (Lisp_Object instantiator)
+ − 3137 {
+ − 3138 CHECK_NATNUM (instantiator);
+ − 3139 }
+ − 3140
+ − 3141 DEFUN ("natnum-specifier-p", Fnatnum_specifier_p, 1, 1, 0, /*
+ − 3142 Return non-nil if OBJECT is a natnum (non-negative-integer) specifier.
442
+ − 3143
+ − 3144 See `make-natnum-specifier' for a description of possible natnum
+ − 3145 instantiators.
428
+ − 3146 */
+ − 3147 (object))
+ − 3148 {
+ − 3149 return NATNUM_SPECIFIERP (object) ? Qt : Qnil;
+ − 3150 }
+ − 3151
+ − 3152 /************************************************************************/
+ − 3153 /* Boolean specifier type */
+ − 3154 /************************************************************************/
+ − 3155
+ − 3156 DEFINE_SPECIFIER_TYPE (boolean);
+ − 3157
+ − 3158 static void
+ − 3159 boolean_validate (Lisp_Object instantiator)
+ − 3160 {
+ − 3161 if (!EQ (instantiator, Qt) && !EQ (instantiator, Qnil))
563
+ − 3162 invalid_constant ("Must be t or nil", instantiator);
428
+ − 3163 }
+ − 3164
+ − 3165 DEFUN ("boolean-specifier-p", Fboolean_specifier_p, 1, 1, 0, /*
+ − 3166 Return non-nil if OBJECT is a boolean specifier.
442
+ − 3167
+ − 3168 See `make-boolean-specifier' for a description of possible boolean
+ − 3169 instantiators.
428
+ − 3170 */
+ − 3171 (object))
+ − 3172 {
+ − 3173 return BOOLEAN_SPECIFIERP (object) ? Qt : Qnil;
+ − 3174 }
+ − 3175
+ − 3176 /************************************************************************/
+ − 3177 /* Display table specifier type */
+ − 3178 /************************************************************************/
+ − 3179
+ − 3180 DEFINE_SPECIFIER_TYPE (display_table);
+ − 3181
442
+ − 3182 #define VALID_SINGLE_DISPTABLE_INSTANTIATOR_P(instantiator) \
+ − 3183 (VECTORP (instantiator) \
+ − 3184 || (CHAR_TABLEP (instantiator) \
+ − 3185 && (XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_CHAR \
+ − 3186 || XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_GENERIC)) \
428
+ − 3187 || RANGE_TABLEP (instantiator))
+ − 3188
+ − 3189 static void
+ − 3190 display_table_validate (Lisp_Object instantiator)
+ − 3191 {
+ − 3192 if (NILP (instantiator))
+ − 3193 /* OK */
+ − 3194 ;
+ − 3195 else if (CONSP (instantiator))
+ − 3196 {
+ − 3197 Lisp_Object tail;
+ − 3198 EXTERNAL_LIST_LOOP (tail, instantiator)
+ − 3199 {
+ − 3200 Lisp_Object car = XCAR (tail);
+ − 3201 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (car))
+ − 3202 goto lose;
+ − 3203 }
+ − 3204 }
+ − 3205 else
+ − 3206 {
+ − 3207 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (instantiator))
+ − 3208 {
+ − 3209 lose:
442
+ − 3210 dead_wrong_type_argument
+ − 3211 (display_table_specifier_methods->predicate_symbol,
428
+ − 3212 instantiator);
+ − 3213 }
+ − 3214 }
+ − 3215 }
+ − 3216
+ − 3217 DEFUN ("display-table-specifier-p", Fdisplay_table_specifier_p, 1, 1, 0, /*
+ − 3218 Return non-nil if OBJECT is a display-table specifier.
442
+ − 3219
+ − 3220 See `current-display-table' for a description of possible display-table
+ − 3221 instantiators.
428
+ − 3222 */
+ − 3223 (object))
+ − 3224 {
+ − 3225 return DISPLAYTABLE_SPECIFIERP (object) ? Qt : Qnil;
+ − 3226 }
+ − 3227
+ − 3228
+ − 3229 /************************************************************************/
+ − 3230 /* Initialization */
+ − 3231 /************************************************************************/
+ − 3232
+ − 3233 void
+ − 3234 syms_of_specifier (void)
+ − 3235 {
442
+ − 3236 INIT_LRECORD_IMPLEMENTATION (specifier);
+ − 3237
+ − 3238 DEFSYMBOL (Qspecifierp);
+ − 3239
+ − 3240 DEFSYMBOL (Qconsole_type);
+ − 3241 DEFSYMBOL (Qdevice_class);
+ − 3242
+ − 3243 /* specifier types defined in general.c. */
428
+ − 3244
+ − 3245 DEFSUBR (Fvalid_specifier_type_p);
+ − 3246 DEFSUBR (Fspecifier_type_list);
+ − 3247 DEFSUBR (Fmake_specifier);
+ − 3248 DEFSUBR (Fspecifierp);
+ − 3249 DEFSUBR (Fspecifier_type);
+ − 3250
+ − 3251 DEFSUBR (Fvalid_specifier_locale_p);
+ − 3252 DEFSUBR (Fvalid_specifier_domain_p);
+ − 3253 DEFSUBR (Fvalid_specifier_locale_type_p);
+ − 3254 DEFSUBR (Fspecifier_locale_type_from_locale);
+ − 3255
+ − 3256 DEFSUBR (Fvalid_specifier_tag_p);
+ − 3257 DEFSUBR (Fvalid_specifier_tag_set_p);
+ − 3258 DEFSUBR (Fcanonicalize_tag_set);
+ − 3259 DEFSUBR (Fdevice_matches_specifier_tag_set_p);
+ − 3260 DEFSUBR (Fdefine_specifier_tag);
+ − 3261 DEFSUBR (Fdevice_matching_specifier_tag_list);
+ − 3262 DEFSUBR (Fspecifier_tag_list);
+ − 3263 DEFSUBR (Fspecifier_tag_predicate);
+ − 3264
+ − 3265 DEFSUBR (Fcheck_valid_instantiator);
+ − 3266 DEFSUBR (Fvalid_instantiator_p);
+ − 3267 DEFSUBR (Fcheck_valid_inst_list);
+ − 3268 DEFSUBR (Fvalid_inst_list_p);
+ − 3269 DEFSUBR (Fcheck_valid_spec_list);
+ − 3270 DEFSUBR (Fvalid_spec_list_p);
+ − 3271 DEFSUBR (Fadd_spec_to_specifier);
+ − 3272 DEFSUBR (Fadd_spec_list_to_specifier);
+ − 3273 DEFSUBR (Fspecifier_spec_list);
+ − 3274 DEFSUBR (Fspecifier_specs);
+ − 3275 DEFSUBR (Fremove_specifier);
+ − 3276 DEFSUBR (Fcopy_specifier);
+ − 3277
+ − 3278 DEFSUBR (Fcheck_valid_specifier_matchspec);
+ − 3279 DEFSUBR (Fvalid_specifier_matchspec_p);
+ − 3280 DEFSUBR (Fspecifier_fallback);
+ − 3281 DEFSUBR (Fspecifier_instance);
+ − 3282 DEFSUBR (Fspecifier_matching_instance);
+ − 3283 DEFSUBR (Fspecifier_instance_from_inst_list);
+ − 3284 DEFSUBR (Fspecifier_matching_instance_from_inst_list);
+ − 3285 DEFSUBR (Fset_specifier_dirty_flag);
+ − 3286
+ − 3287 DEFSUBR (Fgeneric_specifier_p);
+ − 3288 DEFSUBR (Finteger_specifier_p);
+ − 3289 DEFSUBR (Fnatnum_specifier_p);
+ − 3290 DEFSUBR (Fboolean_specifier_p);
+ − 3291 DEFSUBR (Fdisplay_table_specifier_p);
+ − 3292
+ − 3293 /* Symbols pertaining to specifier creation. Specifiers are created
+ − 3294 in the syms_of() functions. */
+ − 3295
+ − 3296 /* locales are defined in general.c. */
+ − 3297
442
+ − 3298 /* some how-to-add flags in general.c. */
+ − 3299 DEFSYMBOL (Qremove_tag_set_prepend);
+ − 3300 DEFSYMBOL (Qremove_tag_set_append);
+ − 3301 DEFSYMBOL (Qremove_locale);
+ − 3302 DEFSYMBOL (Qremove_locale_type);
428
+ − 3303 }
+ − 3304
+ − 3305 void
+ − 3306 specifier_type_create (void)
+ − 3307 {
+ − 3308 the_specifier_type_entry_dynarr = Dynarr_new (specifier_type_entry);
452
+ − 3309 dump_add_root_struct_ptr (&the_specifier_type_entry_dynarr, &sted_description);
428
+ − 3310
+ − 3311 Vspecifier_type_list = Qnil;
+ − 3312 staticpro (&Vspecifier_type_list);
+ − 3313
+ − 3314 INITIALIZE_SPECIFIER_TYPE (generic, "generic", "generic-specifier-p");
+ − 3315
+ − 3316 INITIALIZE_SPECIFIER_TYPE (integer, "integer", "integer-specifier-p");
+ − 3317
+ − 3318 SPECIFIER_HAS_METHOD (integer, validate);
+ − 3319
+ − 3320 INITIALIZE_SPECIFIER_TYPE (natnum, "natnum", "natnum-specifier-p");
+ − 3321
+ − 3322 SPECIFIER_HAS_METHOD (natnum, validate);
+ − 3323
+ − 3324 INITIALIZE_SPECIFIER_TYPE (boolean, "boolean", "boolean-specifier-p");
+ − 3325
+ − 3326 SPECIFIER_HAS_METHOD (boolean, validate);
+ − 3327
442
+ − 3328 INITIALIZE_SPECIFIER_TYPE (display_table, "display-table",
+ − 3329 "display-table-p");
428
+ − 3330
+ − 3331 SPECIFIER_HAS_METHOD (display_table, validate);
+ − 3332 }
+ − 3333
+ − 3334 void
+ − 3335 reinit_specifier_type_create (void)
+ − 3336 {
+ − 3337 REINITIALIZE_SPECIFIER_TYPE (generic);
+ − 3338 REINITIALIZE_SPECIFIER_TYPE (integer);
+ − 3339 REINITIALIZE_SPECIFIER_TYPE (natnum);
+ − 3340 REINITIALIZE_SPECIFIER_TYPE (boolean);
+ − 3341 REINITIALIZE_SPECIFIER_TYPE (display_table);
+ − 3342 }
+ − 3343
+ − 3344 void
+ − 3345 vars_of_specifier (void)
+ − 3346 {
+ − 3347 Vcached_specifiers = Qnil;
+ − 3348 staticpro (&Vcached_specifiers);
+ − 3349
+ − 3350 /* Do NOT mark through this, or specifiers will never be GC'd.
+ − 3351 This is the same deal as for weak hash tables. */
+ − 3352 Vall_specifiers = Qnil;
452
+ − 3353 dump_add_weak_object_chain (&Vall_specifiers);
428
+ − 3354
+ − 3355 Vuser_defined_tags = Qnil;
+ − 3356 staticpro (&Vuser_defined_tags);
+ − 3357
+ − 3358 Vunlock_ghost_specifiers = Qnil;
+ − 3359 staticpro (&Vunlock_ghost_specifiers);
+ − 3360 }
