Mercurial > hg > xemacs-beta
annotate src/specifier.c @ 4520:279cadceaa13
Merge in doc and test changes from September 2008.
| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Mon, 27 Oct 2008 09:51:51 +0900 |
| parents | 11357f7846bf |
| children | f31c12360354 e0db3c197671 |
| rev | line source |
|---|---|
| 428 | 1 /* Specifier implementation |
| 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 2953 | 3 Copyright (C) 1995, 1996, 2002, 2005 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; | |
| 2953 | 26 Written by Ben Wing based on prototype for 19.12 by Chuck Thompson. |
| 27 Magic specifiers by Kirill Katsnelson. | |
| 428 | 28 */ |
| 29 | |
| 30 #include <config.h> | |
| 31 #include "lisp.h" | |
| 32 | |
| 33 #include "buffer.h" | |
| 800 | 34 #include "chartab.h" |
| 872 | 35 #include "device-impl.h" |
| 428 | 36 #include "frame.h" |
| 800 | 37 #include "glyphs.h" |
| 428 | 38 #include "opaque.h" |
| 800 | 39 #include "rangetab.h" |
| 428 | 40 #include "specifier.h" |
| 41 #include "window.h" | |
| 42 | |
| 43 Lisp_Object Qspecifierp; | |
| 442 | 44 Lisp_Object Qremove_tag_set_prepend, Qremove_tag_set_append; |
| 45 Lisp_Object Qremove_locale, Qremove_locale_type; | |
| 428 | 46 |
| 47 Lisp_Object Qconsole_type, Qdevice_class; | |
| 48 | |
| 49 static Lisp_Object Vuser_defined_tags; | |
| 3659 | 50 static Lisp_Object Vcharset_tag_lists; |
| 428 | 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) }, |
| 2367 | 68 { XD_BLOCK_PTR, offsetof (specifier_type_entry, meths), 1, |
| 2551 | 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 |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
250 magic one altogether */ |
| 428 | 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 | |
| 2286 | 266 print_specifier (Lisp_Object obj, Lisp_Object printcharfun, |
| 267 int UNUSED (escapeflag)) | |
| 428 | 268 { |
| 440 | 269 Lisp_Specifier *sp = XSPECIFIER (obj); |
| 428 | 270 int count = specpdl_depth (); |
| 271 Lisp_Object the_specs; | |
| 272 | |
| 273 if (print_readably) | |
| 563 | 274 printing_unreadable_object ("#<%s-specifier 0x%x>", |
| 275 sp->methods->name, sp->header.uid); | |
| 428 | 276 |
| 800 | 277 write_fmt_string (printcharfun, "#<%s-specifier global=", sp->methods->name); |
| 872 | 278 #if 0 |
| 279 /* #### Not obvious this is useful, and overrides user settings; if we | |
| 280 resurrect this, create variables like `print-specifier-length' so it | |
| 281 can be controlled. */ | |
| 428 | 282 specbind (Qprint_string_length, make_int (100)); |
| 283 specbind (Qprint_length, make_int (5)); | |
| 872 | 284 #endif |
| 428 | 285 the_specs = Fspecifier_specs (obj, Qglobal, Qnil, Qnil); |
| 286 if (NILP (the_specs)) | |
| 287 /* there are no global specs */ | |
| 826 | 288 write_c_string (printcharfun, "<unspecified>"); |
| 428 | 289 else |
| 290 print_internal (the_specs, printcharfun, 1); | |
| 291 if (!NILP (sp->fallback)) | |
| 292 { | |
| 800 | 293 write_fmt_string_lisp (printcharfun, " fallback=%S", 1, sp->fallback); |
| 428 | 294 } |
| 771 | 295 unbind_to (count); |
| 800 | 296 write_fmt_string (printcharfun, " 0x%x>", sp->header.uid); |
| 428 | 297 } |
| 298 | |
| 3263 | 299 #ifndef NEW_GC |
| 428 | 300 static void |
| 301 finalize_specifier (void *header, int for_disksave) | |
| 302 { | |
| 440 | 303 Lisp_Specifier *sp = (Lisp_Specifier *) header; |
| 428 | 304 /* don't be snafued by the disksave finalization. */ |
| 305 if (!for_disksave && !GHOST_SPECIFIER_P(sp) && sp->caching) | |
| 306 { | |
| 1726 | 307 xfree (sp->caching, struct specifier_caching *); |
| 428 | 308 sp->caching = 0; |
| 309 } | |
| 310 } | |
| 3263 | 311 #endif /* not NEW_GC */ |
| 428 | 312 |
| 313 static int | |
| 314 specifier_equal (Lisp_Object obj1, Lisp_Object obj2, int depth) | |
| 315 { | |
| 440 | 316 Lisp_Specifier *s1 = XSPECIFIER (obj1); |
| 317 Lisp_Specifier *s2 = XSPECIFIER (obj2); | |
| 428 | 318 int retval; |
| 319 Lisp_Object old_inhibit_quit = Vinhibit_quit; | |
| 320 | |
| 321 /* This function can be called from within redisplay. | |
| 322 internal_equal can trigger a quit. That leads to Bad Things. */ | |
| 323 Vinhibit_quit = Qt; | |
| 324 | |
| 325 depth++; | |
| 326 retval = | |
| 327 (s1->methods == s2->methods && | |
| 328 internal_equal (s1->global_specs, s2->global_specs, depth) && | |
| 329 internal_equal (s1->device_specs, s2->device_specs, depth) && | |
| 330 internal_equal (s1->frame_specs, s2->frame_specs, depth) && | |
| 331 internal_equal (s1->window_specs, s2->window_specs, depth) && | |
| 332 internal_equal (s1->buffer_specs, s2->buffer_specs, depth) && | |
| 333 internal_equal (s1->fallback, s2->fallback, depth)); | |
| 334 | |
| 335 if (retval && HAS_SPECMETH_P (s1, equal)) | |
| 336 retval = SPECMETH (s1, equal, (obj1, obj2, depth - 1)); | |
| 337 | |
| 338 Vinhibit_quit = old_inhibit_quit; | |
| 339 return retval; | |
| 340 } | |
| 341 | |
| 2515 | 342 static Hashcode |
| 428 | 343 specifier_hash (Lisp_Object obj, int depth) |
| 344 { | |
| 440 | 345 Lisp_Specifier *s = XSPECIFIER (obj); |
| 428 | 346 |
| 347 /* specifier hashing is a bit problematic because there are so | |
| 348 many places where data can be stored. We pick what are perhaps | |
| 349 the most likely places where interesting stuff will be. */ | |
| 350 return HASH5 ((HAS_SPECMETH_P (s, hash) ? | |
| 351 SPECMETH (s, hash, (obj, depth)) : 0), | |
| 2515 | 352 (Hashcode) s->methods, |
| 428 | 353 internal_hash (s->global_specs, depth + 1), |
| 354 internal_hash (s->frame_specs, depth + 1), | |
| 355 internal_hash (s->buffer_specs, depth + 1)); | |
| 356 } | |
| 357 | |
| 665 | 358 inline static Bytecount |
| 359 aligned_sizeof_specifier (Bytecount specifier_type_specific_size) | |
| 456 | 360 { |
| 826 | 361 return MAX_ALIGN_SIZE (offsetof (Lisp_Specifier, data) |
| 362 + specifier_type_specific_size); | |
| 456 | 363 } |
| 364 | |
| 665 | 365 static Bytecount |
| 442 | 366 sizeof_specifier (const void *header) |
| 428 | 367 { |
| 456 | 368 const Lisp_Specifier *p = (const Lisp_Specifier *) header; |
| 369 return aligned_sizeof_specifier (GHOST_SPECIFIER_P (p) | |
| 370 ? 0 | |
| 371 : p->methods->extra_data_size); | |
| 428 | 372 } |
| 373 | |
| 1204 | 374 static const struct memory_description specifier_methods_description_1[] = { |
| 440 | 375 { XD_LISP_OBJECT, offsetof (struct specifier_methods, predicate_symbol) }, |
| 428 | 376 { XD_END } |
| 377 }; | |
| 378 | |
| 1204 | 379 const struct sized_memory_description specifier_methods_description = { |
| 440 | 380 sizeof (struct specifier_methods), |
| 428 | 381 specifier_methods_description_1 |
| 382 }; | |
| 383 | |
| 1204 | 384 static const struct memory_description specifier_caching_description_1[] = { |
| 428 | 385 { XD_END } |
| 386 }; | |
| 387 | |
| 3092 | 388 #ifdef NEW_GC |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
389 DEFINE_LRECORD_IMPLEMENTATION ("specifier-caching", |
| 3092 | 390 specifier_caching, |
| 391 1, /*dumpable-flag*/ | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
392 0, 0, 0, 0, 0, |
| 3092 | 393 specifier_caching_description_1, |
| 394 struct specifier_caching); | |
| 395 #else /* not NEW_GC */ | |
| 1204 | 396 static const struct sized_memory_description specifier_caching_description = { |
| 440 | 397 sizeof (struct specifier_caching), |
| 428 | 398 specifier_caching_description_1 |
| 399 }; | |
| 3092 | 400 #endif /* not NEW_GC */ |
| 428 | 401 |
| 1204 | 402 static const struct sized_memory_description specifier_extra_description_map[] |
| 403 = { | |
| 404 { offsetof (Lisp_Specifier, methods) }, | |
| 405 { offsetof (struct specifier_methods, extra_description) }, | |
| 406 { -1 }, | |
| 407 }; | |
| 408 | |
| 409 const struct memory_description specifier_description[] = { | |
| 2367 | 410 { XD_BLOCK_PTR, offsetof (Lisp_Specifier, methods), 1, |
| 2551 | 411 { &specifier_methods_description } }, |
| 440 | 412 { XD_LO_LINK, offsetof (Lisp_Specifier, next_specifier) }, |
| 413 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, global_specs) }, | |
| 414 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, device_specs) }, | |
| 415 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, frame_specs) }, | |
| 416 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, window_specs) }, | |
| 417 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, buffer_specs) }, | |
| 3092 | 418 #ifdef NEW_GC |
| 419 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, caching) }, | |
| 420 #else /* not NEW_GC */ | |
| 2367 | 421 { XD_BLOCK_PTR, offsetof (Lisp_Specifier, caching), 1, |
| 2551 | 422 { &specifier_caching_description } }, |
| 3092 | 423 #endif /* not NEW_GC */ |
| 440 | 424 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, magic_parent) }, |
| 425 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, fallback) }, | |
| 2367 | 426 { XD_BLOCK_ARRAY, offsetof (Lisp_Specifier, data), 1, |
| 2551 | 427 { specifier_extra_description_map } }, |
| 428 | 428 { XD_END } |
| 429 }; | |
| 430 | |
| 1204 | 431 static const struct memory_description specifier_empty_extra_description_1[] = |
| 3659 | 432 { |
| 433 { XD_END } | |
| 434 }; | |
| 1204 | 435 |
| 436 const struct sized_memory_description specifier_empty_extra_description = { | |
| 437 0, specifier_empty_extra_description_1 | |
| 438 }; | |
| 439 | |
| 3263 | 440 #ifdef NEW_GC |
| 441 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("specifier", specifier, | |
| 442 1, /*dumpable-flag*/ | |
| 443 mark_specifier, print_specifier, | |
| 444 0, specifier_equal, specifier_hash, | |
| 445 specifier_description, | |
| 446 sizeof_specifier, | |
| 447 Lisp_Specifier); | |
| 448 #else /* not NEW_GC */ | |
| 934 | 449 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("specifier", specifier, |
| 450 1, /*dumpable-flag*/ | |
| 451 mark_specifier, print_specifier, | |
| 452 finalize_specifier, | |
| 453 specifier_equal, specifier_hash, | |
| 454 specifier_description, | |
| 455 sizeof_specifier, | |
| 456 Lisp_Specifier); | |
| 3263 | 457 #endif /* not NEW_GC */ |
| 428 | 458 |
| 459 /************************************************************************/ | |
| 460 /* Creating specifiers */ | |
| 461 /************************************************************************/ | |
| 462 | |
| 463 static struct specifier_methods * | |
| 578 | 464 decode_specifier_type (Lisp_Object type, Error_Behavior errb) |
| 428 | 465 { |
| 466 int i; | |
| 467 | |
| 468 for (i = 0; i < Dynarr_length (the_specifier_type_entry_dynarr); i++) | |
| 469 { | |
| 470 if (EQ (type, Dynarr_at (the_specifier_type_entry_dynarr, i).symbol)) | |
| 471 return Dynarr_at (the_specifier_type_entry_dynarr, i).meths; | |
| 472 } | |
| 473 | |
| 563 | 474 maybe_invalid_argument ("Invalid specifier type", |
| 3659 | 475 type, Qspecifier, errb); |
| 428 | 476 |
| 477 return 0; | |
| 478 } | |
| 479 | |
| 480 static int | |
| 481 valid_specifier_type_p (Lisp_Object type) | |
| 482 { | |
| 483 return decode_specifier_type (type, ERROR_ME_NOT) != 0; | |
| 484 } | |
| 485 | |
| 486 DEFUN ("valid-specifier-type-p", Fvalid_specifier_type_p, 1, 1, 0, /* | |
| 487 Given a SPECIFIER-TYPE, return non-nil if it is valid. | |
| 2953 | 488 Valid types are `generic', `integer', `boolean', `color', `font', `image', |
| 489 `face-boolean', and `toolbar'. | |
| 428 | 490 */ |
| 491 (specifier_type)) | |
| 492 { | |
| 493 return valid_specifier_type_p (specifier_type) ? Qt : Qnil; | |
| 494 } | |
| 495 | |
| 496 DEFUN ("specifier-type-list", Fspecifier_type_list, 0, 0, 0, /* | |
| 497 Return a list of valid specifier types. | |
| 498 */ | |
| 499 ()) | |
| 500 { | |
| 501 return Fcopy_sequence (Vspecifier_type_list); | |
| 502 } | |
| 503 | |
| 504 void | |
| 505 add_entry_to_specifier_type_list (Lisp_Object symbol, | |
| 506 struct specifier_methods *meths) | |
| 507 { | |
| 508 struct specifier_type_entry entry; | |
| 509 | |
| 510 entry.symbol = symbol; | |
| 511 entry.meths = meths; | |
| 512 Dynarr_add (the_specifier_type_entry_dynarr, entry); | |
| 513 Vspecifier_type_list = Fcons (symbol, Vspecifier_type_list); | |
| 514 } | |
| 515 | |
| 516 static Lisp_Object | |
| 517 make_specifier_internal (struct specifier_methods *spec_meths, | |
| 665 | 518 Bytecount data_size, int call_create_meth) |
| 428 | 519 { |
| 520 Lisp_Object specifier; | |
| 440 | 521 Lisp_Specifier *sp = (Lisp_Specifier *) |
| 3017 | 522 BASIC_ALLOC_LCRECORD (aligned_sizeof_specifier (data_size), |
| 1204 | 523 &lrecord_specifier); |
| 428 | 524 |
| 525 sp->methods = spec_meths; | |
| 526 sp->global_specs = Qnil; | |
| 527 sp->device_specs = Qnil; | |
| 528 sp->frame_specs = Qnil; | |
| 529 sp->window_specs = make_weak_list (WEAK_LIST_KEY_ASSOC); | |
| 530 sp->buffer_specs = Qnil; | |
| 531 sp->fallback = Qnil; | |
| 532 sp->magic_parent = Qnil; | |
| 533 sp->caching = 0; | |
| 534 sp->next_specifier = Vall_specifiers; | |
| 535 | |
| 793 | 536 specifier = wrap_specifier (sp); |
| 428 | 537 Vall_specifiers = specifier; |
| 538 | |
| 539 if (call_create_meth) | |
| 540 { | |
| 541 struct gcpro gcpro1; | |
| 542 GCPRO1 (specifier); | |
| 543 MAYBE_SPECMETH (XSPECIFIER (specifier), create, (specifier)); | |
| 544 UNGCPRO; | |
| 545 } | |
| 546 return specifier; | |
| 547 } | |
| 548 | |
| 549 static Lisp_Object | |
| 550 make_specifier (struct specifier_methods *meths) | |
| 551 { | |
| 552 return make_specifier_internal (meths, meths->extra_data_size, 1); | |
| 553 } | |
| 554 | |
| 555 Lisp_Object | |
| 556 make_magic_specifier (Lisp_Object type) | |
| 557 { | |
| 558 /* This function can GC */ | |
| 559 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 560 Lisp_Object bodily, ghost; | |
| 561 struct gcpro gcpro1; | |
| 562 | |
| 563 bodily = make_specifier (meths); | |
| 564 GCPRO1 (bodily); | |
| 565 ghost = make_specifier_internal (meths, 0, 0); | |
| 566 UNGCPRO; | |
| 567 | |
| 568 /* Connect guys together */ | |
| 569 XSPECIFIER(bodily)->magic_parent = Qt; | |
| 570 XSPECIFIER(bodily)->fallback = ghost; | |
| 571 XSPECIFIER(ghost)->magic_parent = bodily; | |
| 572 | |
| 573 return bodily; | |
| 574 } | |
| 575 | |
| 576 DEFUN ("make-specifier", Fmake_specifier, 1, 1, 0, /* | |
| 577 Return a new specifier object of type TYPE. | |
| 578 | |
| 579 A specifier is an object that can be used to keep track of a property | |
| 580 whose value can be per-buffer, per-window, per-frame, or per-device, | |
| 442 | 581 and can further be restricted to a particular console-type or |
| 582 device-class. Specifiers are used, for example, for the various | |
| 583 built-in properties of a face; this allows a face to have different | |
| 584 values in different frames, buffers, etc. | |
| 585 | |
| 586 When speaking of the value of a specifier, it is important to | |
| 587 distinguish between the *setting* of a specifier, called an | |
| 588 \"instantiator\", and the *actual value*, called an \"instance\". You | |
| 589 put various possible instantiators (i.e. settings) into a specifier | |
| 590 and associate them with particular locales (buffer, window, frame, | |
| 591 device, global), and then the instance (i.e. actual value) is | |
| 592 retrieved in a specific domain (window, frame, device) by looking | |
| 593 through the possible instantiators (i.e. settings). This process is | |
| 594 called \"instantiation\". | |
| 444 | 595 |
| 442 | 596 To put settings into a specifier, use `set-specifier', or the |
| 597 lower-level functions `add-spec-to-specifier' and | |
| 598 `add-spec-list-to-specifier'. You can also temporarily bind a setting | |
| 599 to a specifier using `let-specifier'. To retrieve settings, use | |
| 600 `specifier-specs', or its lower-level counterpart | |
| 2953 | 601 `specifier-spec-list'. |
| 602 | |
| 603 To determine the actual value (i.e. the instance) in a particular domain, use | |
| 604 `specifier-instance'. To determine the corresponding setting that yielded | |
| 605 the value (i.e. the instantiator), use `specifier-instantiator'. | |
| 442 | 606 |
| 607 For more information, see `set-specifier', `specifier-instance', | |
| 428 | 608 `specifier-specs', and `add-spec-to-specifier'; or, for a detailed |
| 442 | 609 description of specifiers, including how exactly the instantiation |
| 610 process works, see the chapter on specifiers in the XEmacs Lisp | |
| 611 Reference Manual. | |
| 428 | 612 |
| 613 TYPE specifies the particular type of specifier, and should be one of | |
| 2953 | 614 the symbols `generic', `integer', `natnum', `boolean', `color', `font', |
| 615 `image', `face-boolean', `display-table', `gutter', `gutter-size', | |
| 616 `gutter-visible' or `toolbar'. | |
| 442 | 617 |
| 618 For more information on particular types of specifiers, see the | |
| 619 functions `make-generic-specifier', `make-integer-specifier', | |
| 620 `make-natnum-specifier', `make-boolean-specifier', | |
| 621 `make-color-specifier', `make-font-specifier', `make-image-specifier', | |
| 622 `make-face-boolean-specifier', `make-gutter-size-specifier', | |
| 623 `make-gutter-visible-specifier', `default-toolbar', `default-gutter', | |
| 624 and `current-display-table'. | |
| 428 | 625 */ |
| 626 (type)) | |
| 627 { | |
| 628 /* This function can GC */ | |
| 442 | 629 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); |
| 428 | 630 |
| 631 return make_specifier (meths); | |
| 632 } | |
| 633 | |
| 634 DEFUN ("specifierp", Fspecifierp, 1, 1, 0, /* | |
| 635 Return t if OBJECT is a specifier. | |
| 636 | |
| 637 A specifier is an object that can be used to keep track of a property | |
| 638 whose value can be per-buffer, per-window, per-frame, or per-device, | |
| 639 and can further be restricted to a particular console-type or device-class. | |
| 640 See `make-specifier'. | |
| 641 */ | |
| 642 (object)) | |
| 643 { | |
| 644 return SPECIFIERP (object) ? Qt : Qnil; | |
| 645 } | |
| 646 | |
| 647 DEFUN ("specifier-type", Fspecifier_type, 1, 1, 0, /* | |
| 648 Return the type of SPECIFIER. | |
| 649 */ | |
| 650 (specifier)) | |
| 651 { | |
| 652 CHECK_SPECIFIER (specifier); | |
| 653 return intern (XSPECIFIER (specifier)->methods->name); | |
| 654 } | |
| 655 | |
| 656 | |
| 657 /************************************************************************/ | |
| 658 /* Locales and domains */ | |
| 659 /************************************************************************/ | |
| 660 | |
| 661 DEFUN ("valid-specifier-locale-p", Fvalid_specifier_locale_p, 1, 1, 0, /* | |
| 662 Return t if LOCALE is a valid specifier locale. | |
| 2953 | 663 Valid locales are devices, frames, windows, buffers, and `global'. |
| 428 | 664 \(nil is not valid.) |
| 665 */ | |
| 666 (locale)) | |
| 667 { | |
| 668 /* This cannot GC. */ | |
| 669 return ((DEVICEP (locale) && DEVICE_LIVE_P (XDEVICE (locale))) || | |
| 670 (FRAMEP (locale) && FRAME_LIVE_P (XFRAME (locale))) || | |
| 671 (BUFFERP (locale) && BUFFER_LIVE_P (XBUFFER (locale))) || | |
| 672 /* dead windows are allowed because they may become live | |
| 673 windows again when a window configuration is restored */ | |
| 674 WINDOWP (locale) || | |
| 675 EQ (locale, Qglobal)) | |
| 676 ? Qt : Qnil; | |
| 677 } | |
| 678 | |
| 679 DEFUN ("valid-specifier-domain-p", Fvalid_specifier_domain_p, 1, 1, 0, /* | |
| 680 Return t if DOMAIN is a valid specifier domain. | |
| 2953 | 681 A domain is used to instantiate a specifier (i.e. determine the specifier's |
| 442 | 682 value in that domain). Valid domains are image instances, windows, frames, |
| 683 and devices. \(nil is not valid.) image instances are pseudo-domains since | |
| 684 instantiation will actually occur in the window the image instance itself is | |
| 685 instantiated in. | |
| 428 | 686 */ |
| 3659 | 687 (domain)) |
| 428 | 688 { |
| 689 /* This cannot GC. */ | |
| 690 return ((DEVICEP (domain) && DEVICE_LIVE_P (XDEVICE (domain))) || | |
| 691 (FRAMEP (domain) && FRAME_LIVE_P (XFRAME (domain))) || | |
| 442 | 692 (WINDOWP (domain) && WINDOW_LIVE_P (XWINDOW (domain))) || |
| 693 /* #### get image instances out of domains! */ | |
| 694 IMAGE_INSTANCEP (domain)) | |
| 428 | 695 ? Qt : Qnil; |
| 696 } | |
| 697 | |
|
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parents:
3836
diff
changeset
|
698 DEFUN ("valid-specifier-locale-type-p", Fvalid_specifier_locale_type_p, 1, |
| 3659 | 699 1, 0, /* |
| 428 | 700 Given a specifier LOCALE-TYPE, return non-nil if it is valid. |
| 2953 | 701 Valid locale types are `global', `device', `frame', `window', and `buffer'. |
| 428 | 702 \(Note, however, that in functions that accept either a locale or a locale |
| 2953 | 703 type, `global' is considered an individual locale.) |
| 428 | 704 */ |
| 3659 | 705 (locale_type)) |
| 428 | 706 { |
| 707 /* This cannot GC. */ | |
| 708 return (EQ (locale_type, Qglobal) || | |
| 709 EQ (locale_type, Qdevice) || | |
| 710 EQ (locale_type, Qframe) || | |
| 711 EQ (locale_type, Qwindow) || | |
| 712 EQ (locale_type, Qbuffer)) ? Qt : Qnil; | |
| 713 } | |
| 714 | |
| 715 static void | |
| 716 check_valid_locale_or_locale_type (Lisp_Object locale) | |
| 717 { | |
| 718 /* This cannot GC. */ | |
| 719 if (EQ (locale, Qall) || | |
| 720 !NILP (Fvalid_specifier_locale_p (locale)) || | |
| 721 !NILP (Fvalid_specifier_locale_type_p (locale))) | |
| 722 return; | |
| 563 | 723 invalid_argument ("Invalid specifier locale or locale type", locale); |
| 428 | 724 } |
| 725 | |
| 726 DEFUN ("specifier-locale-type-from-locale", Fspecifier_locale_type_from_locale, | |
| 727 1, 1, 0, /* | |
| 728 Given a specifier LOCALE, return its type. | |
| 729 */ | |
| 730 (locale)) | |
| 731 { | |
| 732 /* This cannot GC. */ | |
| 733 if (NILP (Fvalid_specifier_locale_p (locale))) | |
| 563 | 734 invalid_argument ("Invalid specifier locale", |
| 3659 | 735 locale); |
| 428 | 736 if (DEVICEP (locale)) return Qdevice; |
| 737 if (FRAMEP (locale)) return Qframe; | |
| 738 if (WINDOWP (locale)) return Qwindow; | |
| 739 if (BUFFERP (locale)) return Qbuffer; | |
| 740 assert (EQ (locale, Qglobal)); | |
| 741 return Qglobal; | |
| 742 } | |
| 743 | |
| 744 static Lisp_Object | |
| 745 decode_locale (Lisp_Object locale) | |
| 746 { | |
| 747 /* This cannot GC. */ | |
| 748 if (NILP (locale)) | |
| 749 return Qglobal; | |
| 750 else if (!NILP (Fvalid_specifier_locale_p (locale))) | |
| 751 return locale; | |
| 752 else | |
| 563 | 753 invalid_argument ("Invalid specifier locale", |
| 3659 | 754 locale); |
| 428 | 755 |
| 756 return Qnil; | |
| 757 } | |
| 758 | |
| 759 static enum spec_locale_type | |
| 760 decode_locale_type (Lisp_Object locale_type) | |
| 761 { | |
| 762 /* This cannot GC. */ | |
| 763 if (EQ (locale_type, Qglobal)) return LOCALE_GLOBAL; | |
| 764 if (EQ (locale_type, Qdevice)) return LOCALE_DEVICE; | |
| 765 if (EQ (locale_type, Qframe)) return LOCALE_FRAME; | |
| 766 if (EQ (locale_type, Qwindow)) return LOCALE_WINDOW; | |
| 767 if (EQ (locale_type, Qbuffer)) return LOCALE_BUFFER; | |
| 768 | |
| 563 | 769 invalid_argument ("Invalid specifier locale type", |
| 3659 | 770 locale_type); |
| 1204 | 771 RETURN_NOT_REACHED (LOCALE_GLOBAL); |
| 428 | 772 } |
| 773 | |
| 774 Lisp_Object | |
| 775 decode_locale_list (Lisp_Object locale) | |
| 776 { | |
| 777 /* This cannot GC. */ | |
| 778 /* The return value of this function must be GCPRO'd. */ | |
| 779 if (NILP (locale)) | |
| 780 { | |
| 781 return list1 (Qall); | |
| 782 } | |
| 783 else if (CONSP (locale)) | |
| 784 { | |
| 785 EXTERNAL_LIST_LOOP_2 (elt, locale) | |
| 786 check_valid_locale_or_locale_type (elt); | |
| 787 return locale; | |
| 788 } | |
| 789 else | |
| 790 { | |
| 791 check_valid_locale_or_locale_type (locale); | |
| 792 return list1 (locale); | |
| 793 } | |
| 794 } | |
| 795 | |
| 796 static enum spec_locale_type | |
| 797 locale_type_from_locale (Lisp_Object locale) | |
| 798 { | |
| 799 return decode_locale_type (Fspecifier_locale_type_from_locale (locale)); | |
| 800 } | |
| 801 | |
| 802 static void | |
| 803 check_valid_domain (Lisp_Object domain) | |
| 804 { | |
| 805 if (NILP (Fvalid_specifier_domain_p (domain))) | |
| 563 | 806 invalid_argument ("Invalid specifier domain", |
| 3659 | 807 domain); |
| 428 | 808 } |
| 809 | |
| 442 | 810 Lisp_Object |
| 428 | 811 decode_domain (Lisp_Object domain) |
| 812 { | |
| 813 if (NILP (domain)) | |
| 814 return Fselected_window (Qnil); | |
| 815 check_valid_domain (domain); | |
| 816 return domain; | |
| 817 } | |
| 818 | |
| 819 | |
| 820 /************************************************************************/ | |
| 821 /* Tags */ | |
| 822 /************************************************************************/ | |
| 823 | |
| 824 DEFUN ("valid-specifier-tag-p", Fvalid_specifier_tag_p, 1, 1, 0, /* | |
| 825 Return non-nil if TAG is a valid specifier tag. | |
| 826 See also `valid-specifier-tag-set-p'. | |
| 827 */ | |
| 828 (tag)) | |
| 829 { | |
| 830 return (valid_console_type_p (tag) || | |
| 831 valid_device_class_p (tag) || | |
| 832 !NILP (assq_no_quit (tag, Vuser_defined_tags))) ? Qt : Qnil; | |
| 833 } | |
| 834 | |
| 835 DEFUN ("valid-specifier-tag-set-p", Fvalid_specifier_tag_set_p, 1, 1, 0, /* | |
| 836 Return non-nil if TAG-SET is a valid specifier tag set. | |
| 837 | |
| 3659 | 838 A specifier tag set is an entity that is attached to an instantiator and can |
| 839 be used to restrict the scope of that instantiator to a particular device | |
| 840 class, device type, or charset. It can also be used to mark instantiators | |
| 841 added by a particular package so that they can be later removed as a group. | |
| 428 | 842 |
| 843 A specifier tag set consists of a list of zero of more specifier tags, | |
| 844 each of which is a symbol that is recognized by XEmacs as a tag. | |
| 845 \(The valid device types and device classes are always tags, as are | |
| 846 any tags defined by `define-specifier-tag'.) It is called a "tag set" | |
| 847 \(as opposed to a list) because the order of the tags or the number of | |
| 848 times a particular tag occurs does not matter. | |
| 849 | |
| 3659 | 850 Each tag has two predicates associated with it, which specify, respectively, |
| 851 whether that tag applies to a particular device and whether it applies to a | |
| 852 particular character set. The predefined tags which are device types and | |
| 853 classes match devices of that type or class. User-defined tags can have any | |
| 854 device predicate, or none (meaning that all devices match). When attempting | |
| 855 to instantiate a specifier, a particular instantiator is only considered if | |
| 856 the device of the domain being instantiated over matches all tags in the tag | |
| 857 set attached to that instantiator. | |
| 858 | |
| 859 If a charset is to be considered--which is only the case for face | |
| 860 instantiators--this consideration may be done twice. The first iteration | |
| 861 pays attention to the character set predicates; if no instantiator can be | |
| 862 found in that case, the search is repeated ignoring the character set | |
| 863 predicates. | |
| 428 | 864 |
| 865 Most of the time, a tag set is not specified, and the instantiator | |
| 866 gets a null tag set, which matches all devices. | |
| 867 */ | |
| 3659 | 868 (tag_set)) |
| 428 | 869 { |
| 870 Lisp_Object rest; | |
| 871 | |
| 872 for (rest = tag_set; !NILP (rest); rest = XCDR (rest)) | |
| 873 { | |
| 874 if (!CONSP (rest)) | |
| 875 return Qnil; | |
| 876 if (NILP (Fvalid_specifier_tag_p (XCAR (rest)))) | |
| 877 return Qnil; | |
| 878 QUIT; | |
| 879 } | |
| 880 return Qt; | |
| 881 } | |
| 882 | |
| 883 Lisp_Object | |
| 884 decode_specifier_tag_set (Lisp_Object tag_set) | |
| 885 { | |
| 886 /* The return value of this function must be GCPRO'd. */ | |
| 887 if (!NILP (Fvalid_specifier_tag_p (tag_set))) | |
| 888 return list1 (tag_set); | |
| 889 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 890 invalid_argument ("Invalid specifier tag-set", |
| 3659 | 891 tag_set); |
| 428 | 892 return tag_set; |
| 893 } | |
| 894 | |
| 895 static Lisp_Object | |
| 896 canonicalize_tag_set (Lisp_Object tag_set) | |
| 897 { | |
| 898 int len = XINT (Flength (tag_set)); | |
| 899 Lisp_Object *tags, rest; | |
| 900 int i, j; | |
| 901 | |
| 902 /* We assume in this function that the tag_set has already been | |
| 903 validated, so there are no surprises. */ | |
| 904 | |
| 905 if (len == 0 || len == 1) | |
| 906 /* most common case */ | |
| 907 return tag_set; | |
| 908 | |
| 909 tags = alloca_array (Lisp_Object, len); | |
| 910 | |
| 911 i = 0; | |
| 912 LIST_LOOP (rest, tag_set) | |
| 913 tags[i++] = XCAR (rest); | |
| 914 | |
| 915 /* Sort the list of tags. We use a bubble sort here (copied from | |
| 916 extent_fragment_update()) -- reduces the function call overhead, | |
| 917 and is the fastest sort for small numbers of items. */ | |
| 918 | |
| 919 for (i = 1; i < len; i++) | |
| 920 { | |
| 921 j = i - 1; | |
| 922 while (j >= 0 && | |
| 793 | 923 qxestrcmp (XSTRING_DATA (XSYMBOL (tags[j])->name), |
| 924 XSTRING_DATA (XSYMBOL (tags[j+1])->name)) > 0) | |
| 428 | 925 { |
| 926 Lisp_Object tmp = tags[j]; | |
| 927 tags[j] = tags[j+1]; | |
| 928 tags[j+1] = tmp; | |
| 929 j--; | |
| 930 } | |
| 931 } | |
| 932 | |
| 933 /* Now eliminate duplicates. */ | |
| 934 | |
| 935 for (i = 1, j = 1; i < len; i++) | |
| 936 { | |
| 937 /* j holds the destination, i the source. */ | |
| 938 if (!EQ (tags[i], tags[i-1])) | |
| 939 tags[j++] = tags[i]; | |
| 940 } | |
| 941 | |
| 942 return Flist (j, tags); | |
| 943 } | |
| 944 | |
| 945 DEFUN ("canonicalize-tag-set", Fcanonicalize_tag_set, 1, 1, 0, /* | |
| 946 Canonicalize the given tag set. | |
| 947 Two canonicalized tag sets can be compared with `equal' to see if they | |
| 948 represent the same tag set. (Specifically, canonicalizing involves | |
| 949 sorting by symbol name and removing duplicates.) | |
| 950 */ | |
| 951 (tag_set)) | |
| 952 { | |
| 953 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 954 invalid_argument ("Invalid tag set", tag_set); |
| 428 | 955 return canonicalize_tag_set (tag_set); |
| 956 } | |
| 957 | |
| 958 static int | |
| 959 device_matches_specifier_tag_set_p (Lisp_Object device, Lisp_Object tag_set) | |
| 960 { | |
| 961 Lisp_Object devtype, devclass, rest; | |
| 962 struct device *d = XDEVICE (device); | |
| 963 | |
| 964 devtype = DEVICE_TYPE (d); | |
| 965 devclass = DEVICE_CLASS (d); | |
| 966 | |
| 967 LIST_LOOP (rest, tag_set) | |
| 968 { | |
| 969 Lisp_Object tag = XCAR (rest); | |
| 970 Lisp_Object assoc; | |
| 971 | |
| 972 if (EQ (tag, devtype) || EQ (tag, devclass)) | |
| 973 continue; | |
| 974 assoc = assq_no_quit (tag, DEVICE_USER_DEFINED_TAGS (d)); | |
| 975 /* other built-in tags (device types/classes) are not in | |
| 976 the user-defined-tags list. */ | |
| 977 if (NILP (assoc) || NILP (XCDR (assoc))) | |
| 978 return 0; | |
| 979 } | |
| 980 | |
| 981 return 1; | |
| 982 } | |
| 983 | |
| 3659 | 984 static int |
| 985 charset_matches_specifier_tag_set_p (Lisp_Object charset, | |
|
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515b91f904c1
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parents:
3836
diff
changeset
|
986 Lisp_Object tag_set, |
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515b91f904c1
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parents:
3836
diff
changeset
|
987 enum font_specifier_matchspec_stages |
| 3659 | 988 stage) |
| 989 { | |
| 990 Lisp_Object rest; | |
| 991 int res = 0; | |
| 992 | |
| 993 assert(stage != impossible); | |
| 994 | |
| 995 LIST_LOOP (rest, tag_set) | |
| 996 { | |
| 997 Lisp_Object tag = XCAR (rest); | |
| 998 Lisp_Object assoc; | |
| 999 | |
| 3736 | 1000 /* In the event that, during the creation of a charset, no specifier |
|
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parents:
3836
diff
changeset
|
1001 tags exist for which CHARSET-PREDICATE has been specified, then |
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515b91f904c1
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parents:
3836
diff
changeset
|
1002 that charset's entry in Vcharset_tag_lists will be nil, and this |
|
515b91f904c1
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Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
1003 charset shouldn't match. */ |
|
515b91f904c1
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Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
1004 |
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515b91f904c1
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Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
1005 if (NILP (XVECTOR_DATA(Vcharset_tag_lists)[XCHARSET_LEADING_BYTE(charset) |
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515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
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diff
changeset
|
1006 - MIN_LEADING_BYTE])) |
|
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
1007 { |
|
515b91f904c1
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Didier Verna <didier@xemacs.org>
parents:
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diff
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|
1008 return 0; |
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515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
1009 } |
| 3659 | 1010 |
| 1011 /* Now, find out what the pre-calculated value is. */ | |
| 1012 assoc = assq_no_quit(tag, | |
| 1013 XVECTOR_DATA(Vcharset_tag_lists) | |
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diff
changeset
|
1014 [XCHARSET_LEADING_BYTE(charset) |
| 3659 | 1015 - MIN_LEADING_BYTE]); |
| 1016 | |
| 1017 if (!(NILP(assoc)) && !(NILP(XCDR(assoc)))) | |
| 1018 { | |
| 1019 assert(VECTORP(XCDR(assoc))); | |
| 1020 | |
| 1021 /* In the event that a tag specifies a charset, then the specifier | |
| 1022 must match for (this stage and this charset) for all | |
| 1023 charset-specifying tags. */ | |
| 1024 if (NILP(XVECTOR_DATA(XCDR(assoc))[stage])) | |
| 1025 { | |
| 1026 /* It doesn't match for this tag, even though the tag | |
| 1027 specifies a charset. Return 0. */ | |
| 1028 return 0; | |
| 1029 } | |
| 1030 | |
| 1031 /* This tag specifies charset limitations, and this charset and | |
| 1032 stage match those charset limitations. | |
| 1033 | |
| 1034 In the event that a later tag specifies charset limitations | |
| 1035 that don't match, the return 0 above prevents us giving a | |
| 1036 positive match. */ | |
| 1037 res = 1; | |
| 1038 } | |
| 1039 } | |
| 1040 | |
| 1041 return res; | |
| 1042 } | |
| 1043 | |
| 1044 | |
| 442 | 1045 DEFUN ("device-matches-specifier-tag-set-p", |
| 1046 Fdevice_matches_specifier_tag_set_p, 2, 2, 0, /* | |
| 428 | 1047 Return non-nil if DEVICE matches specifier tag set TAG-SET. |
| 1048 This means that DEVICE matches each tag in the tag set. (Every | |
| 1049 tag recognized by XEmacs has a predicate associated with it that | |
| 1050 specifies which devices match it.) | |
| 1051 */ | |
| 1052 (device, tag_set)) | |
| 1053 { | |
| 1054 CHECK_LIVE_DEVICE (device); | |
| 1055 | |
| 1056 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 1057 invalid_argument ("Invalid tag set", tag_set); |
| 428 | 1058 |
| 1059 return device_matches_specifier_tag_set_p (device, tag_set) ? Qt : Qnil; | |
| 1060 } | |
| 1061 | |
| 3659 | 1062 Lisp_Object |
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1063 define_specifier_tag(Lisp_Object tag, Lisp_Object device_predicate, |
| 3659 | 1064 Lisp_Object charset_predicate) |
| 428 | 1065 { |
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1066 Lisp_Object assoc = assq_no_quit (tag, Vuser_defined_tags), |
| 3659 | 1067 concons, devcons, charpres = Qnil; |
| 1068 int recompute_devices = 0, recompute_charsets = 0, i, max_args = -1; | |
| 1069 | |
| 428 | 1070 if (NILP (assoc)) |
| 1071 { | |
| 3659 | 1072 recompute_devices = recompute_charsets = 1; |
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1073 Vuser_defined_tags = Fcons (list3 (tag, device_predicate, |
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1074 charset_predicate), |
| 3659 | 1075 Vuser_defined_tags); |
| 428 | 1076 DEVICE_LOOP_NO_BREAK (devcons, concons) |
| 1077 { | |
| 1078 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1079 /* Initially set the value to t in case of error | |
| 3659 | 1080 in device_predicate */ |
| 428 | 1081 DEVICE_USER_DEFINED_TAGS (d) = |
| 1082 Fcons (Fcons (tag, Qt), DEVICE_USER_DEFINED_TAGS (d)); | |
| 1083 } | |
| 3659 | 1084 |
| 1085 if (!NILP (charset_predicate)) | |
| 1086 { | |
| 1087 max_args = XINT(Ffunction_max_args(charset_predicate)); | |
| 1088 if (max_args < 1) | |
| 1089 { | |
| 1090 invalid_argument | |
| 1091 ("Charset predicate must be able to take an argument", tag); | |
| 1092 } | |
| 1093 } | |
| 428 | 1094 } |
| 3659 | 1095 else if (!NILP (device_predicate) && !NILP (XCADR (assoc))) |
| 428 | 1096 { |
| 3659 | 1097 recompute_devices = 1; |
| 1098 XCDR (assoc) = list2(device_predicate, charset_predicate); | |
| 428 | 1099 } |
| 3659 | 1100 else if (!NILP (charset_predicate) || !NILP(XCADDR (assoc))) |
| 1101 { | |
| 1102 max_args = XINT(Ffunction_max_args(charset_predicate)); | |
| 1103 if (max_args < 1) | |
| 1104 { | |
| 1105 invalid_argument | |
| 1106 ("Charset predicate must be able to take an argument", tag); | |
| 1107 } | |
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1108 |
| 3659 | 1109 /* If there exists a charset_predicate for the tag currently (even if |
| 1110 the new charset_predicate is nil), or if we're adding one, we need | |
| 1111 to recompute. This contrasts with the device predicates, where we | |
| 1112 don't need to recompute if the old and new device predicates are | |
| 1113 both nil. */ | |
| 1114 | |
| 1115 recompute_charsets = 1; | |
| 1116 XCDR (assoc) = list2(device_predicate, charset_predicate); | |
| 1117 } | |
| 1118 | |
| 1119 /* Recompute the tag values for all devices and charsets, if necessary. In | |
| 1120 the special case where both the old and new device_predicates are nil, | |
| 1121 we know that we don't have to do it for the device. (It's probably | |
| 1122 common for people to call (define-specifier-tag) more than once on the | |
| 1123 same tag, and the most common case is where DEVICE_PREDICATE is not | |
| 1124 specified.) */ | |
| 1125 | |
| 1126 if (recompute_devices) | |
| 428 | 1127 { |
| 1128 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1129 { | |
| 1130 Lisp_Object device = XCAR (devcons); | |
| 1131 assoc = assq_no_quit (tag, | |
| 1132 DEVICE_USER_DEFINED_TAGS (XDEVICE (device))); | |
| 1133 assert (CONSP (assoc)); | |
| 3659 | 1134 if (NILP (device_predicate)) |
| 428 | 1135 XCDR (assoc) = Qt; |
| 1136 else | |
| 3659 | 1137 XCDR (assoc) = !NILP (call1 (device_predicate, device)) ? Qt |
| 1138 : Qnil; | |
| 428 | 1139 } |
| 1140 } | |
| 1141 | |
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1142 if (recompute_charsets) |
| 3659 | 1143 { |
| 1144 if (NILP(charset_predicate)) | |
| 1145 { | |
| 1146 charpres = Qnil; | |
| 1147 } | |
| 1148 | |
| 1149 for (i = 0; i < NUM_LEADING_BYTES; ++i) | |
| 1150 { | |
| 1151 if (NILP(charset_by_leading_byte(MIN_LEADING_BYTE + i))) | |
| 1152 { | |
| 1153 continue; | |
| 1154 } | |
| 1155 | |
| 1156 assoc = assq_no_quit (tag, | |
| 1157 XVECTOR_DATA(Vcharset_tag_lists)[i]); | |
| 1158 | |
| 1159 if (!NILP(charset_predicate)) | |
| 1160 { | |
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1161 struct gcpro gcpro1; |
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1162 charpres = make_vector(impossible, Qnil); |
| 3680 | 1163 GCPRO1 (charpres); |
| 3659 | 1164 |
| 1165 /* If you want to extend the number of stages available, here | |
| 1166 in setup_charset_initial_specifier_tags, and in specifier.h | |
| 1167 is where you want to go. */ | |
| 1168 | |
| 1169 #define DEFINE_SPECIFIER_TAG_FROB(stage) do { \ | |
| 1170 if (max_args > 1) \ | |
| 1171 { \ | |
| 1172 XVECTOR_DATA(charpres)[stage] = \ | |
| 1173 call2_trapping_problems \ | |
| 1174 ("Error during specifier tag charset predicate," \ | |
| 1175 " stage " #stage, charset_predicate, \ | |
| 1176 charset_by_leading_byte(MIN_LEADING_BYTE + i), \ | |
| 1177 Q##stage, 0); \ | |
| 1178 } \ | |
| 1179 else \ | |
| 1180 { \ | |
| 1181 XVECTOR_DATA(charpres)[stage] = \ | |
| 1182 call1_trapping_problems \ | |
| 1183 ("Error during specifier tag charset predicate," \ | |
| 1184 " stage " #stage, charset_predicate, \ | |
| 1185 charset_by_leading_byte(MIN_LEADING_BYTE + i), \ | |
| 1186 0); \ | |
| 1187 } \ | |
| 1188 \ | |
| 1189 if (UNBOUNDP(XVECTOR_DATA(charpres)[stage])) \ | |
| 1190 { \ | |
| 1191 XVECTOR_DATA(charpres)[stage] = Qnil; \ | |
| 1192 } \ | |
| 1193 else if (!NILP(XVECTOR_DATA(charpres)[stage])) \ | |
| 1194 { \ | |
| 1195 /* Don't want refs to random other objects. */ \ | |
| 1196 XVECTOR_DATA(charpres)[stage] = Qt; \ | |
| 1197 } \ | |
| 1198 } while (0) | |
| 1199 | |
| 1200 DEFINE_SPECIFIER_TAG_FROB (initial); | |
| 1201 DEFINE_SPECIFIER_TAG_FROB (final); | |
| 1202 | |
| 1203 #undef DEFINE_SPECIFIER_TAG_FROB | |
| 1204 | |
| 3680 | 1205 UNGCPRO; |
| 3659 | 1206 } |
| 1207 | |
| 1208 if (!NILP(assoc)) | |
| 1209 { | |
| 1210 assert(CONSP(assoc)); | |
| 1211 XCDR (assoc) = charpres; | |
| 1212 } | |
| 1213 else | |
| 1214 { | |
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1215 XVECTOR_DATA(Vcharset_tag_lists)[i] |
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1216 = Fcons(Fcons(tag, charpres), |
| 3659 | 1217 XVECTOR_DATA (Vcharset_tag_lists)[i]); |
| 1218 } | |
| 1219 } | |
| 1220 } | |
| 1221 return Qt; | |
| 1222 } | |
| 1223 | |
| 1224 DEFUN ("define-specifier-tag", Fdefine_specifier_tag, 1, 3, 0, /* | |
| 1225 Define a new specifier tag. | |
| 1226 | |
| 1227 If DEVICE-PREDICATE is specified, it should be a function of one argument | |
| 1228 \(a device) that specifies whether the tag matches that particular device. | |
| 1229 If DEVICE-PREDICATE is omitted, the tag matches all devices. | |
| 1230 | |
| 1231 If CHARSET-PREDICATE is supplied, it should be a function taking a single | |
| 1232 Lisp character set argument. A tag's charset predicate is primarily used to | |
| 1233 determine what font to use for a given \(set of) charset\(s) when that tag | |
| 1234 is used in a set-face-font call; a non-nil return value indicates that the | |
| 1235 tag matches the charset. | |
| 1236 | |
| 1237 The font matching process also has a concept of stages; the defined stages | |
| 1238 are currently `initial' and `final', and there exist specifier tags with | |
| 1239 those names that correspond to those stages. On X11, 'initial is used when | |
| 1240 the font matching process is looking for fonts that match the desired | |
| 1241 registries of the charset--see the `charset-registries' function. If that | |
| 1242 match process fails, then the 'final tag becomes relevant; this means that a | |
| 1243 more general lookup is desired, and that a font doesn't necessarily have to | |
| 1244 match the desired XLFD for the face, just the charset repertoire for this | |
| 1245 charset. It also means that the charset registry and encoding used will be | |
| 1246 `iso10646-1', and the characters will be converted to display using that | |
| 1247 registry. | |
| 1248 | |
| 1249 If a tag set matches no character set; the two-stage match process will | |
| 1250 ignore the tag on its first pass, but if no match is found, it will respect | |
| 1251 it on the second pass, where character set information is ignored. | |
| 1252 | |
| 1253 You can redefine an existing user-defined specifier tag. However, you | |
| 1254 cannot redefine most of the built-in specifier tags \(the device types and | |
| 1255 classes, `initial', and `final') or the symbols nil, t, `all', or `global'. | |
| 1256 Note that if a device type is not supported in this XEmacs, it will not be | |
| 1257 available as a built-in specifier tag; this is probably something we should | |
| 1258 change. | |
| 1259 */ | |
| 1260 (tag, device_predicate, charset_predicate)) | |
| 1261 { | |
| 1262 int max_args; | |
| 1263 | |
| 1264 CHECK_SYMBOL (tag); | |
| 1265 if (valid_device_class_p (tag) || | |
| 1266 valid_console_type_p (tag) || | |
| 1267 EQ (tag, Qinitial) || EQ (tag, Qfinal)) | |
| 1268 invalid_change ("Cannot redefine built-in specifier tags", tag); | |
| 1269 /* Try to prevent common instantiators and locales from being | |
| 1270 redefined, to reduce ambiguity */ | |
| 1271 if (NILP (tag) || EQ (tag, Qt) || EQ (tag, Qall) || EQ (tag, Qglobal)) | |
| 1272 invalid_change ("Cannot define nil, t, `all', or `global'", tag); | |
| 1273 | |
| 1274 if (!NILP (charset_predicate)) | |
| 1275 { | |
| 1276 max_args = XINT(Ffunction_max_args(charset_predicate)); | |
| 1277 if (max_args != 1) | |
| 1278 { | |
| 1279 /* We only allow the stage argument to be specifed from C. */ | |
| 1280 invalid_change ("Charset predicate must take one argument", | |
| 1281 tag); | |
| 1282 } | |
| 1283 } | |
| 1284 | |
| 1285 return define_specifier_tag(tag, device_predicate, charset_predicate); | |
| 428 | 1286 } |
| 1287 | |
| 1288 /* Called at device-creation time to initialize the user-defined | |
| 1289 tag values for the newly-created device. */ | |
| 1290 | |
| 1291 void | |
| 1292 setup_device_initial_specifier_tags (struct device *d) | |
| 1293 { | |
| 1294 Lisp_Object rest, rest2; | |
| 793 | 1295 Lisp_Object device = wrap_device (d); |
| 3836 | 1296 Lisp_Object device_predicate; |
| 3659 | 1297 int list_len; |
| 793 | 1298 |
| 428 | 1299 DEVICE_USER_DEFINED_TAGS (d) = Fcopy_alist (Vuser_defined_tags); |
| 1300 | |
| 1301 /* Now set up the initial values */ | |
| 1302 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d)) | |
| 1303 XCDR (XCAR (rest)) = Qt; | |
| 1304 | |
| 1305 for (rest = Vuser_defined_tags, rest2 = DEVICE_USER_DEFINED_TAGS (d); | |
| 1306 !NILP (rest); rest = XCDR (rest), rest2 = XCDR (rest2)) | |
| 1307 { | |
| 3659 | 1308 GET_LIST_LENGTH(XCAR(rest), list_len); |
| 1309 | |
| 1310 assert(3 == list_len); | |
| 1311 | |
| 1312 device_predicate = XCADR(XCAR (rest)); | |
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1313 |
| 3659 | 1314 if (NILP (device_predicate)) |
| 1315 { | |
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1316 XCDR (XCAR (rest2)) = Qt; |
| 3659 | 1317 } |
| 428 | 1318 else |
| 3659 | 1319 { |
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1320 device_predicate = !NILP (call_critical_lisp_code |
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1321 (d, device_predicate, device)) |
| 3659 | 1322 ? Qt : Qnil; |
| 3817 | 1323 XCDR (XCAR (rest2)) = device_predicate; |
| 3659 | 1324 } |
| 428 | 1325 } |
| 1326 } | |
| 1327 | |
| 3659 | 1328 void |
| 1329 setup_charset_initial_specifier_tags (Lisp_Object charset) | |
| 1330 { | |
| 1331 Lisp_Object rest, charset_predicate, tag, new_value; | |
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1332 Lisp_Object charset_tag_list = Qnil; |
| 3659 | 1333 |
| 1334 LIST_LOOP (rest, Vuser_defined_tags) | |
| 1335 { | |
| 1336 tag = XCAR(XCAR(rest)); | |
| 1337 charset_predicate = XCADDR(XCAR (rest)); | |
| 1338 | |
| 1339 if (NILP(charset_predicate)) | |
| 1340 { | |
| 1341 continue; | |
| 1342 } | |
| 1343 | |
| 1344 new_value = make_vector(impossible, Qnil); | |
| 1345 | |
| 1346 #define SETUP_CHARSET_TAGS_FROB(stage) do { \ | |
| 1347 \ | |
| 1348 XVECTOR_DATA(new_value)[stage] = call2_trapping_problems \ | |
| 1349 ("Error during specifier tag charset predicate," \ | |
| 1350 " stage " #stage, \ | |
| 1351 charset_predicate, charset, Q##stage, 0); \ | |
| 1352 \ | |
| 1353 if (UNBOUNDP(XVECTOR_DATA(new_value)[stage])) \ | |
| 1354 { \ | |
| 1355 XVECTOR_DATA(new_value)[stage] = Qnil; \ | |
| 1356 } \ | |
| 1357 else if (!NILP(XVECTOR_DATA(new_value)[stage])) \ | |
| 1358 { \ | |
| 1359 /* Don't want random other objects hanging around. */ \ | |
| 1360 XVECTOR_DATA(new_value)[stage] = Qt; \ | |
| 1361 } \ | |
| 1362 \ | |
| 1363 } while (0) | |
| 1364 | |
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1365 SETUP_CHARSET_TAGS_FROB (initial); |
| 3659 | 1366 SETUP_CHARSET_TAGS_FROB (final); |
| 1367 /* More later? */ | |
| 1368 | |
| 1369 #undef SETUP_CHARSET_TAGS_FROB | |
| 1370 | |
| 1371 charset_tag_list = Fcons(Fcons(tag, new_value), charset_tag_list); | |
| 1372 } | |
| 1373 | |
| 1374 XVECTOR_DATA | |
| 1375 (Vcharset_tag_lists)[XCHARSET_LEADING_BYTE(charset) - MIN_LEADING_BYTE] | |
| 1376 = charset_tag_list; | |
| 1377 } | |
| 1378 | |
| 3673 | 1379 /* VM calls this, in vm-multiple-frames-possible-p, in the event that you're |
| 1380 considering taking it out. */ | |
| 3659 | 1381 |
| 442 | 1382 DEFUN ("device-matching-specifier-tag-list", |
| 1383 Fdevice_matching_specifier_tag_list, | |
| 428 | 1384 0, 1, 0, /* |
| 3673 | 1385 Return a list of all specifier tags matching DEVICE. |
| 1386 DEVICE defaults to the selected device if omitted. | |
| 1387 */ | |
| 428 | 1388 (device)) |
| 1389 { | |
| 1390 struct device *d = decode_device (device); | |
| 1391 Lisp_Object rest, list = Qnil; | |
| 1392 struct gcpro gcpro1; | |
| 1393 | |
| 1394 GCPRO1 (list); | |
| 1395 | |
| 1396 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d)) | |
| 1397 { | |
| 3836 | 1398 if (!NILP (XCDR (XCAR (rest)))) |
| 428 | 1399 list = Fcons (XCAR (XCAR (rest)), list); |
| 1400 } | |
| 1401 | |
| 1402 list = Fnreverse (list); | |
| 1403 list = Fcons (DEVICE_CLASS (d), list); | |
| 1404 list = Fcons (DEVICE_TYPE (d), list); | |
| 1405 | |
| 1406 RETURN_UNGCPRO (list); | |
| 1407 } | |
| 1408 | |
| 1409 DEFUN ("specifier-tag-list", Fspecifier_tag_list, 0, 0, 0, /* | |
| 1410 Return a list of all currently-defined specifier tags. | |
| 1411 This includes the built-in ones (the device types and classes). | |
| 1412 */ | |
| 1413 ()) | |
| 1414 { | |
| 1415 Lisp_Object list = Qnil, rest; | |
| 1416 struct gcpro gcpro1; | |
| 1417 | |
| 1418 GCPRO1 (list); | |
| 1419 | |
| 1420 LIST_LOOP (rest, Vuser_defined_tags) | |
| 1421 list = Fcons (XCAR (XCAR (rest)), list); | |
| 1422 | |
| 1423 list = Fnreverse (list); | |
| 1424 list = nconc2 (Fcopy_sequence (Vdevice_class_list), list); | |
| 1425 list = nconc2 (Fcopy_sequence (Vconsole_type_list), list); | |
| 1426 | |
| 1427 RETURN_UNGCPRO (list); | |
| 1428 } | |
| 1429 | |
| 3659 | 1430 DEFUN ("specifier-tag-device-predicate", Fspecifier_tag_device_predicate, |
| 1431 1, 1, 0, /* | |
| 1432 Return the device predicate for the given specifier tag. | |
| 428 | 1433 */ |
| 1434 (tag)) | |
| 1435 { | |
| 1436 /* The return value of this function must be GCPRO'd. */ | |
| 1437 CHECK_SYMBOL (tag); | |
| 1438 | |
| 1439 if (NILP (Fvalid_specifier_tag_p (tag))) | |
| 563 | 1440 invalid_argument ("Invalid specifier tag", |
| 3659 | 1441 tag); |
| 428 | 1442 |
| 1443 /* Make up some predicates for the built-in types */ | |
| 1444 | |
| 1445 if (valid_console_type_p (tag)) | |
| 1446 return list3 (Qlambda, list1 (Qdevice), | |
| 1447 list3 (Qeq, list2 (Qquote, tag), | |
| 1448 list2 (Qconsole_type, Qdevice))); | |
| 1449 | |
| 1450 if (valid_device_class_p (tag)) | |
| 1451 return list3 (Qlambda, list1 (Qdevice), | |
| 1452 list3 (Qeq, list2 (Qquote, tag), | |
| 1453 list2 (Qdevice_class, Qdevice))); | |
| 1454 | |
| 3659 | 1455 return XCADR (assq_no_quit (tag, Vuser_defined_tags)); |
| 1456 } | |
| 1457 | |
| 1458 DEFUN ("specifier-tag-charset-predicate", Fspecifier_tag_charset_predicate, | |
| 1459 1, 1, 0, /* | |
| 3673 | 1460 Return the charset predicate for the given specifier tag. |
| 1461 */ | |
| 3659 | 1462 (tag)) |
| 1463 { | |
| 1464 /* The return value of this function must be GCPRO'd. */ | |
| 1465 CHECK_SYMBOL (tag); | |
| 1466 | |
| 1467 if (NILP (Fvalid_specifier_tag_p (tag))) | |
| 1468 invalid_argument ("Invalid specifier tag", | |
| 1469 tag); | |
| 1470 | |
| 1471 return XCADDR (assq_no_quit (tag, Vuser_defined_tags)); | |
| 428 | 1472 } |
| 1473 | |
| 1474 /* Return true if A "matches" B. If EXACT_P is 0, A must be a subset of B. | |
| 3659 | 1475 Otherwise, A must be `equal' to B. The sets must be canonicalized. */ |
| 428 | 1476 static int |
| 1477 tag_sets_match_p (Lisp_Object a, Lisp_Object b, int exact_p) | |
| 1478 { | |
| 1479 if (!exact_p) | |
| 1480 { | |
| 1481 while (!NILP (a) && !NILP (b)) | |
| 1482 { | |
| 1483 if (EQ (XCAR (a), XCAR (b))) | |
| 1484 a = XCDR (a); | |
| 1485 b = XCDR (b); | |
| 1486 } | |
| 1487 | |
| 1488 return NILP (a); | |
| 1489 } | |
| 1490 else | |
| 1491 { | |
| 1492 while (!NILP (a) && !NILP (b)) | |
| 1493 { | |
| 1494 if (!EQ (XCAR (a), XCAR (b))) | |
| 1495 return 0; | |
| 1496 a = XCDR (a); | |
| 1497 b = XCDR (b); | |
| 1498 } | |
| 1499 | |
| 1500 return NILP (a) && NILP (b); | |
| 1501 } | |
| 1502 } | |
| 1503 | |
| 1504 | |
| 1505 /************************************************************************/ | |
| 1506 /* Spec-lists and inst-lists */ | |
| 1507 /************************************************************************/ | |
| 1508 | |
| 1509 static Lisp_Object | |
| 1510 call_validate_method (Lisp_Object boxed_method, Lisp_Object instantiator) | |
| 1511 { | |
| 1512 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (instantiator); | |
| 1513 return Qt; | |
| 1514 } | |
| 1515 | |
| 1516 static Lisp_Object | |
| 1517 check_valid_instantiator (Lisp_Object instantiator, | |
| 1518 struct specifier_methods *meths, | |
| 578 | 1519 Error_Behavior errb) |
| 428 | 1520 { |
| 1521 if (meths->validate_method) | |
| 1522 { | |
| 1523 Lisp_Object retval; | |
| 1524 | |
| 1525 if (ERRB_EQ (errb, ERROR_ME)) | |
| 1526 { | |
| 1527 (meths->validate_method) (instantiator); | |
| 1528 retval = Qt; | |
| 1529 } | |
| 1530 else | |
| 1531 { | |
| 1532 Lisp_Object opaque = make_opaque_ptr ((void *) | |
| 1533 meths->validate_method); | |
| 1534 struct gcpro gcpro1; | |
| 1535 | |
| 1536 GCPRO1 (opaque); | |
| 1537 retval = call_with_suspended_errors | |
| 1538 ((lisp_fn_t) call_validate_method, | |
| 1539 Qnil, Qspecifier, errb, 2, opaque, instantiator); | |
| 1540 | |
| 1541 free_opaque_ptr (opaque); | |
| 1542 UNGCPRO; | |
| 1543 } | |
| 1544 | |
| 1545 return retval; | |
| 1546 } | |
| 1547 return Qt; | |
| 1548 } | |
| 1549 | |
| 1550 DEFUN ("check-valid-instantiator", Fcheck_valid_instantiator, 2, 2, 0, /* | |
| 1551 Signal an error if INSTANTIATOR is invalid for SPECIFIER-TYPE. | |
| 1552 */ | |
| 1553 (instantiator, specifier_type)) | |
| 1554 { | |
| 1555 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 1556 ERROR_ME); | |
| 1557 | |
| 1558 return check_valid_instantiator (instantiator, meths, ERROR_ME); | |
| 1559 } | |
| 1560 | |
| 1561 DEFUN ("valid-instantiator-p", Fvalid_instantiator_p, 2, 2, 0, /* | |
| 1562 Return non-nil if INSTANTIATOR is valid for SPECIFIER-TYPE. | |
| 1563 */ | |
| 1564 (instantiator, specifier_type)) | |
| 1565 { | |
| 1566 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 1567 ERROR_ME); | |
| 1568 | |
| 1569 return check_valid_instantiator (instantiator, meths, ERROR_ME_NOT); | |
| 1570 } | |
| 1571 | |
| 1572 static Lisp_Object | |
| 1573 check_valid_inst_list (Lisp_Object inst_list, struct specifier_methods *meths, | |
| 578 | 1574 Error_Behavior errb) |
| 428 | 1575 { |
| 2159 | 1576 EXTERNAL_LIST_LOOP_2 (inst_pair, inst_list) |
| 428 | 1577 { |
| 2159 | 1578 Lisp_Object tag_set; |
| 1579 | |
| 1580 if (!CONSP (inst_pair)) | |
| 428 | 1581 { |
| 563 | 1582 maybe_sferror ( |
| 3659 | 1583 "Invalid instantiator pair", inst_pair, |
| 1584 Qspecifier, errb); | |
| 428 | 1585 return Qnil; |
| 1586 } | |
| 1587 if (NILP (Fvalid_specifier_tag_set_p (tag_set = XCAR (inst_pair)))) | |
| 1588 { | |
| 563 | 1589 maybe_invalid_argument ( |
| 3659 | 1590 "Invalid specifier tag", tag_set, |
| 1591 Qspecifier, errb); | |
| 428 | 1592 return Qnil; |
| 1593 } | |
| 1594 | |
| 1595 if (NILP (check_valid_instantiator (XCDR (inst_pair), meths, errb))) | |
| 1596 return Qnil; | |
| 1597 } | |
| 1598 | |
| 1599 return Qt; | |
| 1600 } | |
| 1601 | |
| 1602 DEFUN ("check-valid-inst-list", Fcheck_valid_inst_list, 2, 2, 0, /* | |
| 1603 Signal an error if INST-LIST is invalid for specifier type TYPE. | |
| 1604 */ | |
| 1605 (inst_list, type)) | |
| 1606 { | |
| 1607 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1608 | |
| 1609 return check_valid_inst_list (inst_list, meths, ERROR_ME); | |
| 1610 } | |
| 1611 | |
| 1612 DEFUN ("valid-inst-list-p", Fvalid_inst_list_p, 2, 2, 0, /* | |
| 1613 Return non-nil if INST-LIST is valid for specifier type TYPE. | |
| 1614 */ | |
| 1615 (inst_list, type)) | |
| 1616 { | |
| 1617 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1618 | |
| 1619 return check_valid_inst_list (inst_list, meths, ERROR_ME_NOT); | |
| 1620 } | |
| 1621 | |
| 1622 static Lisp_Object | |
| 1623 check_valid_spec_list (Lisp_Object spec_list, struct specifier_methods *meths, | |
| 578 | 1624 Error_Behavior errb) |
| 428 | 1625 { |
| 2159 | 1626 EXTERNAL_LIST_LOOP_2 (spec, spec_list) |
| 428 | 1627 { |
| 2159 | 1628 Lisp_Object locale; |
| 1629 if (!CONSP (spec)) | |
| 428 | 1630 { |
| 563 | 1631 maybe_sferror ( |
| 3659 | 1632 "Invalid specification list", spec_list, |
| 1633 Qspecifier, errb); | |
| 428 | 1634 return Qnil; |
| 1635 } | |
| 1636 if (NILP (Fvalid_specifier_locale_p (locale = XCAR (spec)))) | |
| 1637 { | |
| 563 | 1638 maybe_invalid_argument ( |
| 3659 | 1639 "Invalid specifier locale", locale, |
| 1640 Qspecifier, errb); | |
| 428 | 1641 return Qnil; |
| 1642 } | |
| 1643 | |
| 1644 if (NILP (check_valid_inst_list (XCDR (spec), meths, errb))) | |
| 1645 return Qnil; | |
| 1646 } | |
| 1647 | |
| 1648 return Qt; | |
| 1649 } | |
| 1650 | |
| 1651 DEFUN ("check-valid-spec-list", Fcheck_valid_spec_list, 2, 2, 0, /* | |
| 1652 Signal an error if SPEC-LIST is invalid for specifier type TYPE. | |
| 1653 */ | |
| 1654 (spec_list, type)) | |
| 1655 { | |
| 1656 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1657 | |
| 1658 return check_valid_spec_list (spec_list, meths, ERROR_ME); | |
| 1659 } | |
| 1660 | |
| 1661 DEFUN ("valid-spec-list-p", Fvalid_spec_list_p, 2, 2, 0, /* | |
| 1662 Return non-nil if SPEC-LIST is valid for specifier type TYPE. | |
| 1663 */ | |
| 1664 (spec_list, type)) | |
| 1665 { | |
| 1666 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1667 | |
| 1668 return check_valid_spec_list (spec_list, meths, ERROR_ME_NOT); | |
| 1669 } | |
| 1670 | |
| 1671 enum spec_add_meth | |
| 1672 decode_how_to_add_specification (Lisp_Object how_to_add) | |
| 1673 { | |
| 1674 if (NILP (how_to_add) || EQ (Qremove_tag_set_prepend, how_to_add)) | |
| 1675 return SPEC_REMOVE_TAG_SET_PREPEND; | |
| 1676 if (EQ (Qremove_tag_set_append, how_to_add)) | |
| 1677 return SPEC_REMOVE_TAG_SET_APPEND; | |
| 1678 if (EQ (Qappend, how_to_add)) | |
| 1679 return SPEC_APPEND; | |
| 1680 if (EQ (Qprepend, how_to_add)) | |
| 1681 return SPEC_PREPEND; | |
| 1682 if (EQ (Qremove_locale, how_to_add)) | |
| 1683 return SPEC_REMOVE_LOCALE; | |
| 1684 if (EQ (Qremove_locale_type, how_to_add)) | |
| 1685 return SPEC_REMOVE_LOCALE_TYPE; | |
| 1686 if (EQ (Qremove_all, how_to_add)) | |
| 1687 return SPEC_REMOVE_ALL; | |
| 1688 | |
| 563 | 1689 invalid_constant ("Invalid `how-to-add' flag", how_to_add); |
| 428 | 1690 |
| 1204 | 1691 RETURN_NOT_REACHED (SPEC_PREPEND); |
| 428 | 1692 } |
| 1693 | |
| 1694 /* Given a specifier object SPEC, return bodily specifier if SPEC is a | |
| 1695 ghost specifier, otherwise return the object itself | |
| 1696 */ | |
| 1697 static Lisp_Object | |
| 1698 bodily_specifier (Lisp_Object spec) | |
| 1699 { | |
| 1700 return (GHOST_SPECIFIER_P (XSPECIFIER (spec)) | |
| 1701 ? XSPECIFIER(spec)->magic_parent : spec); | |
| 1702 } | |
| 1703 | |
| 1704 /* Signal error if (specifier SPEC is read-only. | |
| 1705 Read only are ghost specifiers unless Vunlock_ghost_specifiers is | |
| 1706 non-nil. All other specifiers are read-write. | |
| 1707 */ | |
| 1708 static void | |
| 1709 check_modifiable_specifier (Lisp_Object spec) | |
| 1710 { | |
| 1711 if (NILP (Vunlock_ghost_specifiers) | |
| 1712 && GHOST_SPECIFIER_P (XSPECIFIER (spec))) | |
| 563 | 1713 signal_error (Qsetting_constant, |
| 1714 "Attempt to modify read-only specifier", | |
| 1715 spec); | |
| 428 | 1716 } |
| 1717 | |
| 1718 int | |
| 1719 unlock_ghost_specifiers_protected (void) | |
| 1720 { | |
| 853 | 1721 return internal_bind_lisp_object (&Vunlock_ghost_specifiers, Qt); |
| 428 | 1722 } |
| 1723 | |
| 1724 /* This gets hit so much that the function call overhead had a | |
| 1725 measurable impact (according to Quantify). #### We should figure | |
| 1726 out the frequency with which this is called with the various types | |
| 1727 and reorder the check accordingly. */ | |
| 1728 #define SPECIFIER_GET_SPEC_LIST(specifier, type) \ | |
| 3659 | 1729 (type == LOCALE_GLOBAL ? &(XSPECIFIER (specifier)->global_specs) : \ |
| 1730 type == LOCALE_DEVICE ? &(XSPECIFIER (specifier)->device_specs) : \ | |
| 1731 type == LOCALE_FRAME ? &(XSPECIFIER (specifier)->frame_specs) : \ | |
| 1732 type == LOCALE_WINDOW ? &(XWEAK_LIST_LIST \ | |
| 1733 (XSPECIFIER (specifier)->window_specs)) : \ | |
| 1734 type == LOCALE_BUFFER ? &(XSPECIFIER (specifier)->buffer_specs) : \ | |
| 1735 0) | |
| 428 | 1736 |
| 1737 static Lisp_Object * | |
| 1738 specifier_get_inst_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1739 enum spec_locale_type type) | |
| 1740 { | |
| 1741 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1742 Lisp_Object specification; | |
| 1743 | |
| 1744 if (type == LOCALE_GLOBAL) | |
| 1745 return spec_list; | |
| 1746 /* Calling assq_no_quit when it is just going to return nil anyhow | |
| 1747 is extremely expensive. So sayeth Quantify. */ | |
| 1748 if (!CONSP (*spec_list)) | |
| 1749 return 0; | |
| 1750 specification = assq_no_quit (locale, *spec_list); | |
| 1751 if (NILP (specification)) | |
| 1752 return 0; | |
| 1753 return &XCDR (specification); | |
| 1754 } | |
| 1755 | |
| 1756 /* For the given INST_LIST, return a new INST_LIST containing all elements | |
| 1757 where TAG-SET matches the element's tag set. EXACT_P indicates whether | |
| 1758 the match must be exact (as opposed to a subset). SHORT_P indicates | |
| 1759 that the short form (for `specifier-specs') should be returned if | |
| 1760 possible. If COPY_TREE_P, `copy-tree' is used to ensure that no | |
| 1761 elements of the new list are shared with the initial list. | |
| 1762 */ | |
| 1763 | |
| 1764 static Lisp_Object | |
| 1765 specifier_process_inst_list (Lisp_Object inst_list, | |
| 1766 Lisp_Object tag_set, int exact_p, | |
| 1767 int short_p, int copy_tree_p) | |
| 1768 { | |
| 1769 Lisp_Object retval = Qnil; | |
| 1770 Lisp_Object rest; | |
| 1771 struct gcpro gcpro1; | |
| 1772 | |
| 1773 GCPRO1 (retval); | |
| 1774 LIST_LOOP (rest, inst_list) | |
| 1775 { | |
| 1776 Lisp_Object tagged_inst = XCAR (rest); | |
| 1777 Lisp_Object tagged_inst_tag = XCAR (tagged_inst); | |
| 1778 if (tag_sets_match_p (tag_set, tagged_inst_tag, exact_p)) | |
| 1779 { | |
| 1780 if (short_p && NILP (tagged_inst_tag)) | |
| 1781 retval = Fcons (copy_tree_p ? | |
| 1782 Fcopy_tree (XCDR (tagged_inst), Qt) : | |
| 1783 XCDR (tagged_inst), | |
| 1784 retval); | |
| 1785 else | |
| 1786 retval = Fcons (copy_tree_p ? Fcopy_tree (tagged_inst, Qt) : | |
| 1787 tagged_inst, retval); | |
| 1788 } | |
| 1789 } | |
| 1790 retval = Fnreverse (retval); | |
| 1791 UNGCPRO; | |
| 1792 /* If there is a single instantiator and the short form is | |
| 1793 requested, return just the instantiator (rather than a one-element | |
| 1794 list of it) unless it is nil (so that it can be distinguished from | |
| 1795 no instantiators at all). */ | |
| 1796 if (short_p && CONSP (retval) && !NILP (XCAR (retval)) && | |
| 1797 NILP (XCDR (retval))) | |
| 1798 return XCAR (retval); | |
| 1799 else | |
| 1800 return retval; | |
| 1801 } | |
| 1802 | |
| 1803 static Lisp_Object | |
| 1804 specifier_get_external_inst_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1805 enum spec_locale_type type, | |
| 1806 Lisp_Object tag_set, int exact_p, | |
| 1807 int short_p, int copy_tree_p) | |
| 1808 { | |
| 1809 Lisp_Object *inst_list = specifier_get_inst_list (specifier, locale, | |
| 1810 type); | |
| 1811 if (!inst_list || NILP (*inst_list)) | |
| 1812 { | |
| 2953 | 1813 /* nil for *inst_list should only occur in `global' */ |
| 428 | 1814 assert (!inst_list || EQ (locale, Qglobal)); |
| 1815 return Qnil; | |
| 1816 } | |
| 1817 | |
| 1818 return specifier_process_inst_list (*inst_list, tag_set, exact_p, | |
| 1819 short_p, copy_tree_p); | |
| 1820 } | |
| 1821 | |
| 1822 static Lisp_Object | |
| 1823 specifier_get_external_spec_list (Lisp_Object specifier, | |
| 1824 enum spec_locale_type type, | |
| 1825 Lisp_Object tag_set, int exact_p) | |
| 1826 { | |
| 1827 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1828 Lisp_Object retval = Qnil; | |
| 1829 Lisp_Object rest; | |
| 1830 struct gcpro gcpro1; | |
| 1831 | |
| 1832 assert (type != LOCALE_GLOBAL); | |
| 1833 /* We're about to let stuff go external; make sure there aren't | |
| 1834 any dead objects */ | |
| 1835 *spec_list = cleanup_assoc_list (*spec_list); | |
| 1836 | |
| 1837 GCPRO1 (retval); | |
| 1838 LIST_LOOP (rest, *spec_list) | |
| 1839 { | |
| 1840 Lisp_Object spec = XCAR (rest); | |
| 1841 Lisp_Object inst_list = | |
| 1842 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 1); | |
| 1843 if (!NILP (inst_list)) | |
| 1844 retval = Fcons (Fcons (XCAR (spec), inst_list), retval); | |
| 1845 } | |
| 1846 RETURN_UNGCPRO (Fnreverse (retval)); | |
| 1847 } | |
| 1848 | |
| 1849 static Lisp_Object * | |
| 1850 specifier_new_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 1851 enum spec_locale_type type) | |
| 1852 { | |
| 1853 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1854 Lisp_Object new_spec = Fcons (locale, Qnil); | |
| 1855 assert (type != LOCALE_GLOBAL); | |
| 1856 *spec_list = Fcons (new_spec, *spec_list); | |
| 1857 return &XCDR (new_spec); | |
| 1858 } | |
| 1859 | |
| 1860 /* For the given INST_LIST, return a new list comprised of elements | |
| 1861 where TAG_SET does not match the element's tag set. This operation | |
| 1862 is destructive. */ | |
| 1863 | |
| 1864 static Lisp_Object | |
| 1865 specifier_process_remove_inst_list (Lisp_Object inst_list, | |
| 1866 Lisp_Object tag_set, int exact_p, | |
| 1867 int *was_removed) | |
| 1868 { | |
| 1869 Lisp_Object prev = Qnil, rest; | |
| 1870 | |
| 1871 *was_removed = 0; | |
| 1872 | |
| 1873 LIST_LOOP (rest, inst_list) | |
| 1874 { | |
| 1875 if (tag_sets_match_p (tag_set, XCAR (XCAR (rest)), exact_p)) | |
| 1876 { | |
| 1877 /* time to remove. */ | |
| 1878 *was_removed = 1; | |
| 1879 if (NILP (prev)) | |
| 1880 inst_list = XCDR (rest); | |
| 1881 else | |
| 1882 XCDR (prev) = XCDR (rest); | |
| 1883 } | |
| 1884 else | |
| 1885 prev = rest; | |
| 1886 } | |
| 1887 | |
| 1888 return inst_list; | |
| 1889 } | |
| 1890 | |
| 1891 static void | |
| 1892 specifier_remove_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 1893 enum spec_locale_type type, | |
| 1894 Lisp_Object tag_set, int exact_p) | |
| 1895 { | |
| 1896 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1897 Lisp_Object assoc; | |
| 1898 int was_removed; | |
| 1899 | |
| 1900 if (type == LOCALE_GLOBAL) | |
| 1901 *spec_list = specifier_process_remove_inst_list (*spec_list, tag_set, | |
| 1902 exact_p, &was_removed); | |
| 1903 else | |
| 1904 { | |
| 1905 assoc = assq_no_quit (locale, *spec_list); | |
| 1906 if (NILP (assoc)) | |
| 1907 /* this locale is not found. */ | |
| 1908 return; | |
| 1909 XCDR (assoc) = specifier_process_remove_inst_list (XCDR (assoc), | |
| 1910 tag_set, exact_p, | |
| 1911 &was_removed); | |
| 1912 if (NILP (XCDR (assoc))) | |
| 1913 /* no inst-pairs left; remove this locale entirely. */ | |
| 1914 *spec_list = remassq_no_quit (locale, *spec_list); | |
| 1915 } | |
| 1916 | |
| 1917 if (was_removed) | |
| 1918 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change, | |
| 1919 (bodily_specifier (specifier), locale)); | |
| 1920 } | |
| 1921 | |
| 1922 static void | |
| 1923 specifier_remove_locale_type (Lisp_Object specifier, | |
| 1924 enum spec_locale_type type, | |
| 1925 Lisp_Object tag_set, int exact_p) | |
| 1926 { | |
| 1927 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1928 Lisp_Object prev = Qnil, rest; | |
| 1929 | |
| 1930 assert (type != LOCALE_GLOBAL); | |
| 1931 LIST_LOOP (rest, *spec_list) | |
| 1932 { | |
| 1933 int was_removed; | |
| 1934 int remove_spec = 0; | |
| 1935 Lisp_Object spec = XCAR (rest); | |
| 1936 | |
| 1937 /* There may be dead objects floating around */ | |
| 1938 /* remember, dead windows can become alive again. */ | |
| 1939 if (!WINDOWP (XCAR (spec)) && object_dead_p (XCAR (spec))) | |
| 1940 { | |
| 1941 remove_spec = 1; | |
| 1942 was_removed = 0; | |
| 1943 } | |
| 1944 else | |
| 1945 { | |
| 1946 XCDR (spec) = specifier_process_remove_inst_list (XCDR (spec), | |
| 1947 tag_set, exact_p, | |
| 1948 &was_removed); | |
| 1949 if (NILP (XCDR (spec))) | |
| 1950 remove_spec = 1; | |
| 1951 } | |
| 1952 | |
| 1953 if (remove_spec) | |
| 1954 { | |
| 1955 if (NILP (prev)) | |
| 1956 *spec_list = XCDR (rest); | |
| 1957 else | |
| 1958 XCDR (prev) = XCDR (rest); | |
| 1959 } | |
| 1960 else | |
| 1961 prev = rest; | |
| 1962 | |
| 1963 if (was_removed) | |
| 1964 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change, | |
| 1965 (bodily_specifier (specifier), XCAR (spec))); | |
| 1966 } | |
| 1967 } | |
| 1968 | |
| 1969 /* NEW_LIST is going to be added to INST_LIST, with add method ADD_METH. | |
| 1970 Frob INST_LIST according to ADD_METH. No need to call an after-change | |
| 1971 function; the calling function will do this. Return either SPEC_PREPEND | |
| 1972 or SPEC_APPEND, indicating whether to prepend or append the NEW_LIST. */ | |
| 1973 | |
| 1974 static enum spec_add_meth | |
| 1975 handle_multiple_add_insts (Lisp_Object *inst_list, | |
| 1976 Lisp_Object new_list, | |
| 1977 enum spec_add_meth add_meth) | |
| 1978 { | |
| 1979 switch (add_meth) | |
| 1980 { | |
| 1981 case SPEC_REMOVE_TAG_SET_APPEND: | |
| 1982 add_meth = SPEC_APPEND; | |
| 1983 goto remove_tag_set; | |
| 1984 case SPEC_REMOVE_TAG_SET_PREPEND: | |
| 1985 add_meth = SPEC_PREPEND; | |
| 1986 remove_tag_set: | |
| 1987 { | |
| 1988 Lisp_Object rest; | |
| 1989 | |
| 1990 LIST_LOOP (rest, new_list) | |
| 1991 { | |
| 1992 Lisp_Object canontag = canonicalize_tag_set (XCAR (XCAR (rest))); | |
| 1993 struct gcpro gcpro1; | |
| 1994 | |
| 1995 GCPRO1 (canontag); | |
| 1996 /* pull out all elements from the existing list with the | |
| 1997 same tag as any tags in NEW_LIST. */ | |
| 1998 *inst_list = remassoc_no_quit (canontag, *inst_list); | |
| 1999 UNGCPRO; | |
| 2000 } | |
| 2001 } | |
| 2002 return add_meth; | |
| 2003 case SPEC_REMOVE_LOCALE: | |
| 2004 *inst_list = Qnil; | |
| 2005 return SPEC_PREPEND; | |
| 2006 case SPEC_APPEND: | |
| 2007 return add_meth; | |
| 2008 default: | |
| 2009 return SPEC_PREPEND; | |
| 2010 } | |
| 2011 } | |
| 2012 | |
| 2013 /* Given a LOCALE and INST_LIST that is going to be added to SPECIFIER, | |
| 2014 copy, canonicalize, and call the going_to_add methods as necessary | |
| 2015 to produce a new list that is the one that really will be added | |
| 2016 to the specifier. */ | |
| 2017 | |
| 2018 static Lisp_Object | |
| 2019 build_up_processed_list (Lisp_Object specifier, Lisp_Object locale, | |
| 2020 Lisp_Object inst_list) | |
| 2021 { | |
| 2022 /* The return value of this function must be GCPRO'd. */ | |
| 2023 Lisp_Object rest, list_to_build_up = Qnil; | |
| 440 | 2024 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2025 struct gcpro gcpro1; |
| 2026 | |
| 2027 GCPRO1 (list_to_build_up); | |
| 2028 LIST_LOOP (rest, inst_list) | |
| 2029 { | |
| 2030 Lisp_Object tag_set = XCAR (XCAR (rest)); | |
| 2031 Lisp_Object sub_inst_list = Qnil; | |
| 434 | 2032 Lisp_Object instantiator; |
| 428 | 2033 struct gcpro ngcpro1, ngcpro2; |
| 2034 | |
| 434 | 2035 if (HAS_SPECMETH_P (sp, copy_instantiator)) |
| 2036 instantiator = SPECMETH (sp, copy_instantiator, | |
| 2037 (XCDR (XCAR (rest)))); | |
| 2038 else | |
| 2039 instantiator = Fcopy_tree (XCDR (XCAR (rest)), Qt); | |
| 2040 | |
| 428 | 2041 NGCPRO2 (instantiator, sub_inst_list); |
| 2042 /* call the will-add method; it may GC */ | |
| 2043 sub_inst_list = HAS_SPECMETH_P (sp, going_to_add) ? | |
| 2044 SPECMETH (sp, going_to_add, | |
| 2045 (bodily_specifier (specifier), locale, | |
| 2046 tag_set, instantiator)) : | |
| 2047 Qt; | |
| 2048 if (EQ (sub_inst_list, Qt)) | |
| 2049 /* no change here. */ | |
| 2050 sub_inst_list = list1 (Fcons (canonicalize_tag_set (tag_set), | |
| 2051 instantiator)); | |
| 2052 else | |
| 2053 { | |
| 2054 /* now canonicalize all the tag sets in the new objects */ | |
| 2055 Lisp_Object rest2; | |
| 2056 LIST_LOOP (rest2, sub_inst_list) | |
| 2057 XCAR (XCAR (rest2)) = canonicalize_tag_set (XCAR (XCAR (rest2))); | |
| 2058 } | |
| 2059 | |
| 2060 list_to_build_up = nconc2 (sub_inst_list, list_to_build_up); | |
| 2061 NUNGCPRO; | |
| 2062 } | |
| 2063 | |
| 2064 RETURN_UNGCPRO (Fnreverse (list_to_build_up)); | |
| 2065 } | |
| 2066 | |
| 2067 /* Add a specification (locale and instantiator list) to a specifier. | |
| 2068 ADD_METH specifies what to do with existing specifications in the | |
| 2069 specifier, and is an enum that corresponds to the values in | |
| 2070 `add-spec-to-specifier'. The calling routine is responsible for | |
| 2071 validating LOCALE and INST-LIST, but the tag-sets in INST-LIST | |
| 2072 do not need to be canonicalized. */ | |
| 2073 | |
| 3659 | 2074 /* #### I really need to rethink the after-change |
| 2075 functions to make them easier to use and more efficient. */ | |
| 428 | 2076 |
| 2077 static void | |
| 2078 specifier_add_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 2079 Lisp_Object inst_list, enum spec_add_meth add_meth) | |
| 2080 { | |
| 440 | 2081 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2082 enum spec_locale_type type = locale_type_from_locale (locale); |
| 2083 Lisp_Object *orig_inst_list, tem; | |
| 2084 Lisp_Object list_to_build_up = Qnil; | |
| 2085 struct gcpro gcpro1; | |
| 2086 | |
| 1015 | 2087 if (NILP (inst_list)) |
| 2088 return; | |
| 2089 | |
| 428 | 2090 GCPRO1 (list_to_build_up); |
| 2091 list_to_build_up = build_up_processed_list (specifier, locale, inst_list); | |
| 2092 /* Now handle REMOVE_LOCALE_TYPE and REMOVE_ALL. These are the | |
| 2093 add-meth types that affect locales other than this one. */ | |
| 2094 if (add_meth == SPEC_REMOVE_LOCALE_TYPE) | |
| 2095 specifier_remove_locale_type (specifier, type, Qnil, 0); | |
| 2096 else if (add_meth == SPEC_REMOVE_ALL) | |
| 2097 { | |
| 2098 specifier_remove_locale_type (specifier, LOCALE_BUFFER, Qnil, 0); | |
| 2099 specifier_remove_locale_type (specifier, LOCALE_WINDOW, Qnil, 0); | |
| 2100 specifier_remove_locale_type (specifier, LOCALE_FRAME, Qnil, 0); | |
| 2101 specifier_remove_locale_type (specifier, LOCALE_DEVICE, Qnil, 0); | |
| 2102 specifier_remove_spec (specifier, Qglobal, LOCALE_GLOBAL, Qnil, 0); | |
| 2103 } | |
| 2104 | |
| 2105 orig_inst_list = specifier_get_inst_list (specifier, locale, type); | |
| 2106 if (!orig_inst_list) | |
| 2107 orig_inst_list = specifier_new_spec (specifier, locale, type); | |
| 2108 add_meth = handle_multiple_add_insts (orig_inst_list, list_to_build_up, | |
| 2109 add_meth); | |
| 2110 | |
| 2111 if (add_meth == SPEC_PREPEND) | |
| 2112 tem = nconc2 (list_to_build_up, *orig_inst_list); | |
| 2113 else if (add_meth == SPEC_APPEND) | |
| 2114 tem = nconc2 (*orig_inst_list, list_to_build_up); | |
| 2115 else | |
| 442 | 2116 { |
| 2500 | 2117 ABORT (); |
| 442 | 2118 tem = Qnil; |
| 2119 } | |
| 428 | 2120 |
| 2121 *orig_inst_list = tem; | |
| 2122 | |
| 2123 UNGCPRO; | |
| 2124 | |
| 2125 /* call the after-change method */ | |
| 2126 MAYBE_SPECMETH (sp, after_change, | |
| 2127 (bodily_specifier (specifier), locale)); | |
| 2128 } | |
| 2129 | |
| 2130 static void | |
| 2131 specifier_copy_spec (Lisp_Object specifier, Lisp_Object dest, | |
| 2132 Lisp_Object locale, enum spec_locale_type type, | |
| 2133 Lisp_Object tag_set, int exact_p, | |
| 2134 enum spec_add_meth add_meth) | |
| 2135 { | |
| 2136 Lisp_Object inst_list = | |
| 2137 specifier_get_external_inst_list (specifier, locale, type, tag_set, | |
| 2138 exact_p, 0, 0); | |
| 2139 specifier_add_spec (dest, locale, inst_list, add_meth); | |
| 2140 } | |
| 2141 | |
| 2142 static void | |
| 2143 specifier_copy_locale_type (Lisp_Object specifier, Lisp_Object dest, | |
| 2144 enum spec_locale_type type, | |
| 2145 Lisp_Object tag_set, int exact_p, | |
| 2146 enum spec_add_meth add_meth) | |
| 2147 { | |
| 2148 Lisp_Object *src_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 2149 Lisp_Object rest; | |
| 2150 | |
| 2151 /* This algorithm is O(n^2) in running time. | |
| 2152 It's certainly possible to implement an O(n log n) algorithm, | |
| 2153 but I doubt there's any need to. */ | |
| 2154 | |
| 2155 LIST_LOOP (rest, *src_list) | |
| 2156 { | |
| 2157 Lisp_Object spec = XCAR (rest); | |
| 2158 /* There may be dead objects floating around */ | |
| 2159 /* remember, dead windows can become alive again. */ | |
| 2160 if (WINDOWP (XCAR (spec)) || !object_dead_p (XCAR (spec))) | |
| 2161 specifier_add_spec | |
| 2162 (dest, XCAR (spec), | |
| 2163 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 0), | |
| 2164 add_meth); | |
| 2165 } | |
| 2166 } | |
| 2167 | |
| 2168 /* map MAPFUN over the locales in SPECIFIER that are given in LOCALE. | |
| 2169 CLOSURE is passed unchanged to MAPFUN. LOCALE can be one of | |
| 2170 | |
| 3659 | 2171 -- nil (same as `all') |
| 2172 -- a single locale, locale type, or `all' | |
| 2173 -- a list of locales, locale types, and/or `all' | |
| 2953 | 2174 |
| 2175 MAPFUN is called for each locale and locale type given; for `all', | |
| 2176 it is called for the locale `global' and for the four possible | |
| 428 | 2177 locale types. In each invocation, either LOCALE will be a locale |
| 2178 and LOCALE_TYPE will be the locale type of this locale, | |
| 2179 or LOCALE will be nil and LOCALE_TYPE will be a locale type. | |
| 2180 If MAPFUN ever returns non-zero, the mapping is halted and the | |
| 2181 value returned is returned from map_specifier(). Otherwise, the | |
| 2182 mapping proceeds to the end and map_specifier() returns 0. | |
| 3659 | 2183 */ |
| 428 | 2184 |
| 2185 static int | |
| 2186 map_specifier (Lisp_Object specifier, Lisp_Object locale, | |
| 2187 int (*mapfun) (Lisp_Object specifier, | |
| 2188 Lisp_Object locale, | |
| 2189 enum spec_locale_type locale_type, | |
| 2190 Lisp_Object tag_set, | |
| 2191 int exact_p, | |
| 2192 void *closure), | |
| 2193 Lisp_Object tag_set, Lisp_Object exact_p, | |
| 2194 void *closure) | |
| 2195 { | |
| 2196 int retval = 0; | |
| 2197 Lisp_Object rest; | |
| 2198 struct gcpro gcpro1, gcpro2; | |
| 2199 | |
| 2200 GCPRO2 (tag_set, locale); | |
| 2201 locale = decode_locale_list (locale); | |
| 2202 tag_set = decode_specifier_tag_set (tag_set); | |
| 2203 tag_set = canonicalize_tag_set (tag_set); | |
| 2204 | |
| 2205 LIST_LOOP (rest, locale) | |
| 2206 { | |
| 2207 Lisp_Object theloc = XCAR (rest); | |
| 2208 if (!NILP (Fvalid_specifier_locale_p (theloc))) | |
| 2209 { | |
| 2210 retval = (*mapfun) (specifier, theloc, | |
| 2211 locale_type_from_locale (theloc), | |
| 2212 tag_set, !NILP (exact_p), closure); | |
| 2213 if (retval) | |
| 2214 break; | |
| 2215 } | |
| 2216 else if (!NILP (Fvalid_specifier_locale_type_p (theloc))) | |
| 2217 { | |
| 2218 retval = (*mapfun) (specifier, Qnil, | |
| 2219 decode_locale_type (theloc), tag_set, | |
| 2220 !NILP (exact_p), closure); | |
| 2221 if (retval) | |
| 2222 break; | |
| 2223 } | |
| 2224 else | |
| 2225 { | |
| 2226 assert (EQ (theloc, Qall)); | |
| 2227 retval = (*mapfun) (specifier, Qnil, LOCALE_BUFFER, tag_set, | |
| 2228 !NILP (exact_p), closure); | |
| 2229 if (retval) | |
| 2230 break; | |
| 2231 retval = (*mapfun) (specifier, Qnil, LOCALE_WINDOW, tag_set, | |
| 2232 !NILP (exact_p), closure); | |
| 2233 if (retval) | |
| 2234 break; | |
| 2235 retval = (*mapfun) (specifier, Qnil, LOCALE_FRAME, tag_set, | |
| 2236 !NILP (exact_p), closure); | |
| 2237 if (retval) | |
| 2238 break; | |
| 2239 retval = (*mapfun) (specifier, Qnil, LOCALE_DEVICE, tag_set, | |
| 2240 !NILP (exact_p), closure); | |
| 2241 if (retval) | |
| 2242 break; | |
| 2243 retval = (*mapfun) (specifier, Qglobal, LOCALE_GLOBAL, tag_set, | |
| 2244 !NILP (exact_p), closure); | |
| 2245 if (retval) | |
| 2246 break; | |
| 2247 } | |
| 2248 } | |
| 2249 | |
| 2250 UNGCPRO; | |
| 2251 return retval; | |
| 2252 } | |
| 2253 | |
| 2254 DEFUN ("add-spec-to-specifier", Fadd_spec_to_specifier, 2, 5, 0, /* | |
| 2255 Add a specification to SPECIFIER. | |
| 2256 The specification maps from LOCALE (which should be a window, buffer, | |
| 2953 | 2257 frame, device, or `global', and defaults to `global') to INSTANTIATOR, |
| 428 | 2258 whose allowed values depend on the type of the specifier. Optional |
| 2259 argument TAG-SET limits the instantiator to apply only to the specified | |
| 2260 tag set, which should be a list of tags all of which must match the | |
| 2261 device being instantiated over (tags are a device type, a device class, | |
| 2262 or tags defined with `define-specifier-tag'). Specifying a single | |
| 2263 symbol for TAG-SET is equivalent to specifying a one-element list | |
| 2264 containing that symbol. Optional argument HOW-TO-ADD specifies what to | |
| 2265 do if there are already specifications in the specifier. | |
| 2266 It should be one of | |
| 2267 | |
| 2953 | 2268 `prepend' Put at the beginning of the current list of |
| 428 | 2269 instantiators for LOCALE. |
| 2953 | 2270 `append' Add to the end of the current list of |
| 428 | 2271 instantiators for LOCALE. |
| 2953 | 2272 `remove-tag-set-prepend' (this is the default) |
| 428 | 2273 Remove any existing instantiators whose tag set is |
| 2274 the same as TAG-SET; then put the new instantiator | |
| 2275 at the beginning of the current list. ("Same tag | |
| 2276 set" means that they contain the same elements. | |
| 2277 The order may be different.) | |
| 2953 | 2278 `remove-tag-set-append' |
| 428 | 2279 Remove any existing instantiators whose tag set is |
| 2280 the same as TAG-SET; then put the new instantiator | |
| 2281 at the end of the current list. | |
| 2953 | 2282 `remove-locale' Remove all previous instantiators for this locale |
| 428 | 2283 before adding the new spec. |
| 2953 | 2284 `remove-locale-type' Remove all specifications for all locales of the |
| 428 | 2285 same type as LOCALE (this includes LOCALE itself) |
| 2286 before adding the new spec. | |
| 2953 | 2287 `remove-all' Remove all specifications from the specifier |
| 428 | 2288 before adding the new spec. |
| 2289 | |
| 2290 You can retrieve the specifications for a particular locale or locale type | |
| 2291 with the function `specifier-spec-list' or `specifier-specs'. | |
| 2292 */ | |
| 2293 (specifier, instantiator, locale, tag_set, how_to_add)) | |
| 2294 { | |
| 2295 enum spec_add_meth add_meth; | |
| 2296 Lisp_Object inst_list; | |
| 2297 struct gcpro gcpro1; | |
| 2298 | |
| 2299 CHECK_SPECIFIER (specifier); | |
| 2300 check_modifiable_specifier (specifier); | |
| 2301 | |
| 2302 locale = decode_locale (locale); | |
| 2303 check_valid_instantiator (instantiator, | |
| 2304 decode_specifier_type | |
| 2305 (Fspecifier_type (specifier), ERROR_ME), | |
| 2306 ERROR_ME); | |
| 2307 /* tag_set might be newly-created material, but it's part of inst_list | |
| 2308 so is properly GC-protected. */ | |
| 2309 tag_set = decode_specifier_tag_set (tag_set); | |
| 2310 add_meth = decode_how_to_add_specification (how_to_add); | |
| 2311 | |
| 2312 inst_list = list1 (Fcons (tag_set, instantiator)); | |
| 2313 GCPRO1 (inst_list); | |
| 2314 specifier_add_spec (specifier, locale, inst_list, add_meth); | |
| 2315 recompute_cached_specifier_everywhere (specifier); | |
| 2316 RETURN_UNGCPRO (Qnil); | |
| 2317 } | |
| 2318 | |
| 2319 DEFUN ("add-spec-list-to-specifier", Fadd_spec_list_to_specifier, 2, 3, 0, /* | |
| 444 | 2320 Add SPEC-LIST (a list of specifications) to SPECIFIER. |
| 2321 The format of SPEC-LIST is | |
| 428 | 2322 |
| 2323 ((LOCALE (TAG-SET . INSTANTIATOR) ...) ...) | |
| 2324 | |
| 2325 where | |
| 2953 | 2326 LOCALE := a window, a buffer, a frame, a device, or `global' |
| 428 | 2327 TAG-SET := an unordered list of zero or more TAGS, each of which |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2328 is a symbol |
| 428 | 2329 TAG := a device class (see `valid-device-class-p'), a device type |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2330 (see `valid-console-type-p'), or a tag defined with |
|
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2331 `define-specifier-tag' |
| 428 | 2332 INSTANTIATOR := format determined by the type of specifier |
| 2333 | |
| 2334 The pair (TAG-SET . INSTANTIATOR) is called an `inst-pair'. | |
| 2335 A list of inst-pairs is called an `inst-list'. | |
| 2336 The pair (LOCALE . INST-LIST) is called a `specification' or `spec'. | |
| 2337 A spec-list, then, can be viewed as a list of specifications. | |
| 2338 | |
| 2339 HOW-TO-ADD specifies how to combine the new specifications with | |
| 2340 the existing ones, and has the same semantics as for | |
| 2341 `add-spec-to-specifier'. | |
| 2342 | |
| 2343 In many circumstances, the higher-level function `set-specifier' is | |
| 2344 more convenient and should be used instead. | |
| 2345 */ | |
| 2346 (specifier, spec_list, how_to_add)) | |
| 2347 { | |
| 2348 enum spec_add_meth add_meth; | |
| 2349 Lisp_Object rest; | |
| 2350 | |
| 2351 CHECK_SPECIFIER (specifier); | |
| 2352 check_modifiable_specifier (specifier); | |
| 2353 | |
| 2354 check_valid_spec_list (spec_list, | |
| 2355 decode_specifier_type | |
| 2356 (Fspecifier_type (specifier), ERROR_ME), | |
| 2357 ERROR_ME); | |
| 2358 add_meth = decode_how_to_add_specification (how_to_add); | |
| 2359 | |
| 2360 LIST_LOOP (rest, spec_list) | |
| 2361 { | |
| 2362 /* Placating the GCC god. */ | |
| 2363 Lisp_Object specification = XCAR (rest); | |
| 2364 Lisp_Object locale = XCAR (specification); | |
| 2365 Lisp_Object inst_list = XCDR (specification); | |
| 2366 | |
| 2367 specifier_add_spec (specifier, locale, inst_list, add_meth); | |
| 2368 } | |
| 2369 recompute_cached_specifier_everywhere (specifier); | |
| 2370 return Qnil; | |
| 2371 } | |
| 2372 | |
| 2373 void | |
| 2374 add_spec_to_ghost_specifier (Lisp_Object specifier, Lisp_Object instantiator, | |
| 2375 Lisp_Object locale, Lisp_Object tag_set, | |
| 2376 Lisp_Object how_to_add) | |
| 2377 { | |
| 2378 int depth = unlock_ghost_specifiers_protected (); | |
| 2379 Fadd_spec_to_specifier (XSPECIFIER(specifier)->fallback, | |
| 2380 instantiator, locale, tag_set, how_to_add); | |
| 771 | 2381 unbind_to (depth); |
| 428 | 2382 } |
| 2383 | |
| 2384 struct specifier_spec_list_closure | |
| 2385 { | |
| 2386 Lisp_Object head, tail; | |
| 2387 }; | |
| 2388 | |
| 2389 static int | |
| 2390 specifier_spec_list_mapfun (Lisp_Object specifier, | |
| 2391 Lisp_Object locale, | |
| 2392 enum spec_locale_type locale_type, | |
| 2393 Lisp_Object tag_set, | |
| 2394 int exact_p, | |
| 2395 void *closure) | |
| 2396 { | |
| 2397 struct specifier_spec_list_closure *cl = | |
| 2398 (struct specifier_spec_list_closure *) closure; | |
| 2399 Lisp_Object partial; | |
| 2400 | |
| 2401 if (NILP (locale)) | |
| 2402 partial = specifier_get_external_spec_list (specifier, | |
| 2403 locale_type, | |
| 2404 tag_set, exact_p); | |
| 2405 else | |
| 2406 { | |
| 2407 partial = specifier_get_external_inst_list (specifier, locale, | |
| 2408 locale_type, tag_set, | |
| 2409 exact_p, 0, 1); | |
| 2410 if (!NILP (partial)) | |
| 2411 partial = list1 (Fcons (locale, partial)); | |
| 2412 } | |
| 2413 if (NILP (partial)) | |
| 2414 return 0; | |
| 2415 | |
| 2416 /* tack on the new list */ | |
| 2417 if (NILP (cl->tail)) | |
| 2418 cl->head = cl->tail = partial; | |
| 2419 else | |
| 2420 XCDR (cl->tail) = partial; | |
| 2421 /* find the new tail */ | |
| 2422 while (CONSP (XCDR (cl->tail))) | |
| 2423 cl->tail = XCDR (cl->tail); | |
| 2424 return 0; | |
| 2425 } | |
| 2426 | |
| 2427 /* For the given SPECIFIER create and return a list of all specs | |
| 2428 contained within it, subject to LOCALE. If LOCALE is a locale, only | |
| 2429 specs in that locale will be returned. If LOCALE is a locale type, | |
| 2430 all specs in all locales of that type will be returned. If LOCALE is | |
| 2431 nil, all specs will be returned. This always copies lists and never | |
| 2432 returns the actual lists, because we do not want someone manipulating | |
| 2433 the actual objects. This may cause a slight loss of potential | |
| 2434 functionality but if we were to allow it then a user could manage to | |
| 2435 violate our assertion that the specs contained in the actual | |
| 2436 specifier lists are all valid. */ | |
| 2437 | |
| 2438 DEFUN ("specifier-spec-list", Fspecifier_spec_list, 1, 4, 0, /* | |
| 2439 Return the spec-list of specifications for SPECIFIER in LOCALE. | |
| 2440 | |
| 2441 If LOCALE is a particular locale (a buffer, window, frame, device, | |
| 2953 | 2442 or `global'), a spec-list consisting of the specification for that |
| 428 | 2443 locale will be returned. |
| 2444 | |
| 2953 | 2445 If LOCALE is a locale type (i.e. `buffer', `window', `frame', or `device'), |
| 428 | 2446 a spec-list of the specifications for all locales of that type will be |
| 2447 returned. | |
| 2448 | |
| 2953 | 2449 If LOCALE is nil or `all', a spec-list of all specifications in SPECIFIER |
| 428 | 2450 will be returned. |
| 2451 | |
| 2953 | 2452 LOCALE can also be a list of locales, locale types, and/or `all'; the |
| 428 | 2453 result is as if `specifier-spec-list' were called on each element of the |
| 2454 list and the results concatenated together. | |
| 2455 | |
| 2456 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2457 subset of (or possibly equal to) the instantiator's tag set are returned. | |
| 2458 \(The default value of nil is a subset of all tag sets, so in this case | |
| 2459 no instantiators will be screened out.) If EXACT-P is non-nil, however, | |
| 2460 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2461 to be returned. | |
| 2462 */ | |
| 3659 | 2463 (specifier, locale, tag_set, exact_p)) |
| 428 | 2464 { |
| 2465 struct specifier_spec_list_closure cl; | |
| 2466 struct gcpro gcpro1, gcpro2; | |
| 2467 | |
| 2468 CHECK_SPECIFIER (specifier); | |
| 2469 cl.head = cl.tail = Qnil; | |
| 2470 GCPRO2 (cl.head, cl.tail); | |
| 2471 map_specifier (specifier, locale, specifier_spec_list_mapfun, | |
| 2472 tag_set, exact_p, &cl); | |
| 2473 UNGCPRO; | |
| 2474 return cl.head; | |
| 2475 } | |
| 2476 | |
| 2477 | |
| 2478 DEFUN ("specifier-specs", Fspecifier_specs, 1, 4, 0, /* | |
| 2479 Return the specification(s) for SPECIFIER in LOCALE. | |
| 2480 | |
| 2481 If LOCALE is a single locale or is a list of one element containing a | |
| 2482 single locale, then a "short form" of the instantiators for that locale | |
| 2483 will be returned. Otherwise, this function is identical to | |
| 2484 `specifier-spec-list'. | |
| 2485 | |
| 2486 The "short form" is designed for readability and not for ease of use | |
| 2487 in Lisp programs, and is as follows: | |
| 2488 | |
| 2489 1. If there is only one instantiator, then an inst-pair (i.e. cons of | |
| 2490 tag and instantiator) will be returned; otherwise a list of | |
| 2491 inst-pairs will be returned. | |
| 2953 | 2492 2. For each inst-pair returned, if the instantiator's tag is `any', |
| 428 | 2493 the tag will be removed and the instantiator itself will be returned |
| 2494 instead of the inst-pair. | |
| 2495 3. If there is only one instantiator, its value is nil, and its tag is | |
| 2953 | 2496 `any', a one-element list containing nil will be returned rather |
| 428 | 2497 than just nil, to distinguish this case from there being no |
| 2498 instantiators at all. | |
| 2499 */ | |
| 2500 (specifier, locale, tag_set, exact_p)) | |
| 2501 { | |
| 2502 if (!NILP (Fvalid_specifier_locale_p (locale)) || | |
| 2503 (CONSP (locale) && !NILP (Fvalid_specifier_locale_p (XCAR (locale))) && | |
| 2504 NILP (XCDR (locale)))) | |
| 2505 { | |
| 2506 struct gcpro gcpro1; | |
| 2507 | |
| 2508 CHECK_SPECIFIER (specifier); | |
| 2509 if (CONSP (locale)) | |
| 2510 locale = XCAR (locale); | |
| 2511 GCPRO1 (tag_set); | |
| 2512 tag_set = decode_specifier_tag_set (tag_set); | |
| 2513 tag_set = canonicalize_tag_set (tag_set); | |
| 2514 RETURN_UNGCPRO | |
| 2515 (specifier_get_external_inst_list (specifier, locale, | |
| 2516 locale_type_from_locale (locale), | |
| 2517 tag_set, !NILP (exact_p), 1, 1)); | |
| 2518 } | |
| 2519 else | |
| 2520 return Fspecifier_spec_list (specifier, locale, tag_set, exact_p); | |
| 2521 } | |
| 2522 | |
| 2523 static int | |
| 2524 remove_specifier_mapfun (Lisp_Object specifier, | |
| 2525 Lisp_Object locale, | |
| 2526 enum spec_locale_type locale_type, | |
| 2527 Lisp_Object tag_set, | |
| 2528 int exact_p, | |
| 2286 | 2529 void *UNUSED (closure)) |
| 428 | 2530 { |
| 2531 if (NILP (locale)) | |
| 2532 specifier_remove_locale_type (specifier, locale_type, tag_set, exact_p); | |
| 2533 else | |
| 2534 specifier_remove_spec (specifier, locale, locale_type, tag_set, exact_p); | |
| 2535 return 0; | |
| 2536 } | |
| 2537 | |
| 2538 DEFUN ("remove-specifier", Fremove_specifier, 1, 4, 0, /* | |
| 2539 Remove specification(s) for SPECIFIER. | |
| 2540 | |
| 2541 If LOCALE is a particular locale (a window, buffer, frame, device, | |
| 2953 | 2542 or `global'), the specification for that locale will be removed. |
| 2543 | |
| 2544 If instead, LOCALE is a locale type (i.e. `window', `buffer', `frame', | |
| 2545 or `device'), the specifications for all locales of that type will be | |
| 428 | 2546 removed. |
| 2547 | |
| 2953 | 2548 If LOCALE is nil or `all', all specifications will be removed. |
| 2549 | |
| 2550 LOCALE can also be a list of locales, locale types, and/or `all'; this | |
| 428 | 2551 is equivalent to calling `remove-specifier' for each of the elements |
| 2552 in the list. | |
| 2553 | |
| 2554 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2555 subset of (or possibly equal to) the instantiator's tag set are removed. | |
| 2556 The default value of nil is a subset of all tag sets, so in this case | |
| 2557 no instantiators will be screened out. If EXACT-P is non-nil, however, | |
| 2558 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2559 to be removed. | |
| 2560 */ | |
| 2561 (specifier, locale, tag_set, exact_p)) | |
| 2562 { | |
| 2563 CHECK_SPECIFIER (specifier); | |
| 2564 check_modifiable_specifier (specifier); | |
| 2565 | |
| 2566 map_specifier (specifier, locale, remove_specifier_mapfun, | |
| 2567 tag_set, exact_p, 0); | |
| 2568 recompute_cached_specifier_everywhere (specifier); | |
| 2569 return Qnil; | |
| 2570 } | |
| 2571 | |
| 2572 void | |
| 2573 remove_ghost_specifier (Lisp_Object specifier, Lisp_Object locale, | |
| 2574 Lisp_Object tag_set, Lisp_Object exact_p) | |
| 2575 { | |
| 2576 int depth = unlock_ghost_specifiers_protected (); | |
| 2577 Fremove_specifier (XSPECIFIER(specifier)->fallback, | |
| 2578 locale, tag_set, exact_p); | |
| 771 | 2579 unbind_to (depth); |
| 428 | 2580 } |
| 2581 | |
| 2582 struct copy_specifier_closure | |
| 2583 { | |
| 2584 Lisp_Object dest; | |
| 2585 enum spec_add_meth add_meth; | |
| 2586 int add_meth_is_nil; | |
| 2587 }; | |
| 2588 | |
| 2589 static int | |
| 2590 copy_specifier_mapfun (Lisp_Object specifier, | |
| 2591 Lisp_Object locale, | |
| 2592 enum spec_locale_type locale_type, | |
| 2593 Lisp_Object tag_set, | |
| 2594 int exact_p, | |
| 2595 void *closure) | |
| 2596 { | |
| 2597 struct copy_specifier_closure *cl = | |
| 2598 (struct copy_specifier_closure *) closure; | |
| 2599 | |
| 2600 if (NILP (locale)) | |
| 2601 specifier_copy_locale_type (specifier, cl->dest, locale_type, | |
| 2602 tag_set, exact_p, | |
| 2603 cl->add_meth_is_nil ? | |
| 2604 SPEC_REMOVE_LOCALE_TYPE : | |
| 2605 cl->add_meth); | |
| 2606 else | |
| 2607 specifier_copy_spec (specifier, cl->dest, locale, locale_type, | |
| 2608 tag_set, exact_p, | |
| 2609 cl->add_meth_is_nil ? SPEC_REMOVE_LOCALE : | |
| 2610 cl->add_meth); | |
| 2611 return 0; | |
| 2612 } | |
| 2613 | |
| 2614 DEFUN ("copy-specifier", Fcopy_specifier, 1, 6, 0, /* | |
| 2615 Copy SPECIFIER to DEST, or create a new one if DEST is nil. | |
| 2616 | |
| 2617 If DEST is nil or omitted, a new specifier will be created and the | |
| 2618 specifications copied into it. Otherwise, the specifications will be | |
| 2619 copied into the existing specifier in DEST. | |
| 2620 | |
| 2953 | 2621 If LOCALE is nil or `all', all specifications will be copied. If LOCALE |
| 428 | 2622 is a particular locale, the specification for that particular locale will |
| 2623 be copied. If LOCALE is a locale type, the specifications for all locales | |
| 2624 of that type will be copied. LOCALE can also be a list of locales, | |
| 2953 | 2625 locale types, and/or `all'; this is equivalent to calling `copy-specifier' |
| 428 | 2626 for each of the elements of the list. See `specifier-spec-list' for more |
| 2627 information about LOCALE. | |
| 2628 | |
| 2629 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2630 subset of (or possibly equal to) the instantiator's tag set are copied. | |
| 2631 The default value of nil is a subset of all tag sets, so in this case | |
| 2632 no instantiators will be screened out. If EXACT-P is non-nil, however, | |
| 2633 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2634 to be copied. | |
| 2635 | |
| 2636 Optional argument HOW-TO-ADD specifies what to do with existing | |
| 2637 specifications in DEST. If nil, then whichever locales or locale types | |
| 2638 are copied will first be completely erased in DEST. Otherwise, it is | |
| 2639 the same as in `add-spec-to-specifier'. | |
| 2640 */ | |
| 2641 (specifier, dest, locale, tag_set, exact_p, how_to_add)) | |
| 2642 { | |
| 2643 struct gcpro gcpro1; | |
| 2644 struct copy_specifier_closure cl; | |
| 2645 | |
| 2646 CHECK_SPECIFIER (specifier); | |
| 2647 if (NILP (how_to_add)) | |
| 2648 cl.add_meth_is_nil = 1; | |
| 2649 else | |
| 2650 cl.add_meth_is_nil = 0; | |
| 2651 cl.add_meth = decode_how_to_add_specification (how_to_add); | |
| 2652 if (NILP (dest)) | |
| 2653 { | |
| 2654 /* #### What about copying the extra data? */ | |
| 2655 dest = make_specifier (XSPECIFIER (specifier)->methods); | |
| 2656 } | |
| 2657 else | |
| 2658 { | |
| 2659 CHECK_SPECIFIER (dest); | |
| 2660 check_modifiable_specifier (dest); | |
| 2661 if (XSPECIFIER (dest)->methods != XSPECIFIER (specifier)->methods) | |
| 3659 | 2662 invalid_argument ("Specifiers not of same type", Qunbound); |
| 428 | 2663 } |
| 2664 | |
| 2665 cl.dest = dest; | |
| 2666 GCPRO1 (dest); | |
| 2667 map_specifier (specifier, locale, copy_specifier_mapfun, | |
| 2668 tag_set, exact_p, &cl); | |
| 2669 UNGCPRO; | |
| 2670 recompute_cached_specifier_everywhere (dest); | |
| 2671 return dest; | |
| 2672 } | |
| 2673 | |
| 2674 | |
| 2675 /************************************************************************/ | |
| 2953 | 2676 /* Instantiation */ |
| 428 | 2677 /************************************************************************/ |
| 2678 | |
| 2679 static Lisp_Object | |
| 2680 call_validate_matchspec_method (Lisp_Object boxed_method, | |
| 2681 Lisp_Object matchspec) | |
| 2682 { | |
| 2683 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (matchspec); | |
| 2684 return Qt; | |
| 2685 } | |
| 2686 | |
| 2687 static Lisp_Object | |
| 2688 check_valid_specifier_matchspec (Lisp_Object matchspec, | |
| 2689 struct specifier_methods *meths, | |
| 578 | 2690 Error_Behavior errb) |
| 428 | 2691 { |
| 2692 if (meths->validate_matchspec_method) | |
| 2693 { | |
| 2694 Lisp_Object retval; | |
| 2695 | |
| 2696 if (ERRB_EQ (errb, ERROR_ME)) | |
| 2697 { | |
| 2698 (meths->validate_matchspec_method) (matchspec); | |
| 2699 retval = Qt; | |
| 2700 } | |
| 2701 else | |
| 2702 { | |
| 2703 Lisp_Object opaque = | |
| 2704 make_opaque_ptr ((void *) meths->validate_matchspec_method); | |
| 2705 struct gcpro gcpro1; | |
| 2706 | |
| 2707 GCPRO1 (opaque); | |
| 2708 retval = call_with_suspended_errors | |
| 2709 ((lisp_fn_t) call_validate_matchspec_method, | |
| 2710 Qnil, Qspecifier, errb, 2, opaque, matchspec); | |
| 2711 | |
| 2712 free_opaque_ptr (opaque); | |
| 2713 UNGCPRO; | |
| 2714 } | |
| 2715 | |
| 2716 return retval; | |
| 2717 } | |
| 2718 else | |
| 2719 { | |
| 563 | 2720 maybe_sferror |
| 428 | 2721 ("Matchspecs not allowed for this specifier type", |
| 2722 intern (meths->name), Qspecifier, errb); | |
| 2723 return Qnil; | |
| 2724 } | |
| 2725 } | |
| 2726 | |
| 442 | 2727 DEFUN ("check-valid-specifier-matchspec", Fcheck_valid_specifier_matchspec, 2, |
| 2728 2, 0, /* | |
| 428 | 2729 Signal an error if MATCHSPEC is invalid for SPECIFIER-TYPE. |
| 2730 See `specifier-matching-instance' for a description of matchspecs. | |
| 2731 */ | |
| 2732 (matchspec, specifier_type)) | |
| 2733 { | |
| 2734 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 2735 ERROR_ME); | |
| 2736 | |
| 2737 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME); | |
| 2738 } | |
| 2739 | |
| 2740 DEFUN ("valid-specifier-matchspec-p", Fvalid_specifier_matchspec_p, 2, 2, 0, /* | |
| 2741 Return non-nil if MATCHSPEC is valid for SPECIFIER-TYPE. | |
| 2742 See `specifier-matching-instance' for a description of matchspecs. | |
| 2743 */ | |
| 2744 (matchspec, specifier_type)) | |
| 2745 { | |
| 2746 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 2747 ERROR_ME); | |
| 2748 | |
| 2749 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME_NOT); | |
| 2750 } | |
| 2751 | |
| 2752 /* This function is purposely not callable from Lisp. If a Lisp | |
| 2753 caller wants to set a fallback, they should just set the | |
| 2754 global value. */ | |
| 2755 | |
| 2756 void | |
| 2757 set_specifier_fallback (Lisp_Object specifier, Lisp_Object fallback) | |
| 2758 { | |
| 440 | 2759 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2760 assert (SPECIFIERP (fallback) || |
| 2761 !NILP (Fvalid_inst_list_p (fallback, Fspecifier_type (specifier)))); | |
| 2762 if (SPECIFIERP (fallback)) | |
| 2763 assert (EQ (Fspecifier_type (specifier), Fspecifier_type (fallback))); | |
| 2764 if (BODILY_SPECIFIER_P (sp)) | |
| 2765 GHOST_SPECIFIER(sp)->fallback = fallback; | |
| 2766 else | |
| 2767 sp->fallback = fallback; | |
| 2768 /* call the after-change method */ | |
| 2769 MAYBE_SPECMETH (sp, after_change, | |
| 2770 (bodily_specifier (specifier), Qfallback)); | |
| 2771 recompute_cached_specifier_everywhere (specifier); | |
| 2772 } | |
| 2773 | |
| 2774 DEFUN ("specifier-fallback", Fspecifier_fallback, 1, 1, 0, /* | |
| 2775 Return the fallback value for SPECIFIER. | |
| 2776 Fallback values are provided by the C code for certain built-in | |
| 2953 | 2777 specifiers to make sure that instantiation won't fail even if all |
| 428 | 2778 specs are removed from the specifier, or to implement simple |
| 2779 inheritance behavior (e.g. this method is used to ensure that | |
| 2953 | 2780 faces other than `default' inherit their attributes from `default'). |
| 428 | 2781 By design, you cannot change the fallback value, and specifiers |
| 2782 created with `make-specifier' will never have a fallback (although | |
| 2783 a similar, Lisp-accessible capability may be provided in the future | |
| 2784 to allow for inheritance). | |
| 2785 | |
| 2953 | 2786 The fallback value will be an inst-list that is instantiated like |
| 428 | 2787 any other inst-list, a specifier of the same type as SPECIFIER |
| 2788 \(results in inheritance), or nil for no fallback. | |
| 2789 | |
| 2953 | 2790 When you instantiate a specifier, you can explicitly request that the |
| 428 | 2791 fallback not be consulted. (The C code does this, for example, when |
| 2792 merging faces.) See `specifier-instance'. | |
| 2793 */ | |
| 2794 (specifier)) | |
| 2795 { | |
| 2796 CHECK_SPECIFIER (specifier); | |
| 2797 return Fcopy_tree (XSPECIFIER (specifier)->fallback, Qt); | |
| 2798 } | |
| 2799 | |
| 2800 static Lisp_Object | |
| 2801 specifier_instance_from_inst_list (Lisp_Object specifier, | |
| 2802 Lisp_Object matchspec, | |
| 2803 Lisp_Object domain, | |
| 2804 Lisp_Object inst_list, | |
| 578 | 2805 Error_Behavior errb, int no_quit, |
| 2953 | 2806 Lisp_Object depth, |
|
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parents:
3836
diff
changeset
|
2807 Lisp_Object *instantiator, |
|
515b91f904c1
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Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2808 int no_fallback) |
| 428 | 2809 { |
| 2810 /* This function can GC */ | |
| 440 | 2811 Lisp_Specifier *sp; |
| 3659 | 2812 Lisp_Object device, charset = Qnil, rest; |
| 2813 int count = specpdl_depth (), respected_charsets = 0; | |
| 428 | 2814 struct gcpro gcpro1, gcpro2; |
| 3659 | 2815 enum font_specifier_matchspec_stages stage = initial; |
| 2816 #ifdef DEBUG_XEMACS | |
| 2817 int non_ascii; | |
| 2818 #endif | |
| 428 | 2819 |
| 2820 GCPRO2 (specifier, inst_list); | |
| 2821 | |
| 2822 sp = XSPECIFIER (specifier); | |
| 442 | 2823 device = DOMAIN_DEVICE (domain); |
| 428 | 2824 |
| 2825 if (no_quit) | |
| 3659 | 2826 /* The instantiate method is allowed to call eval. Since it |
| 2827 is quite common for this function to get called from somewhere in | |
| 2828 redisplay we need to make sure that quits are ignored. Otherwise | |
| 2829 Fsignal will abort. */ | |
| 428 | 2830 specbind (Qinhibit_quit, Qt); |
| 2831 | |
| 3659 | 2832 #ifdef MULE |
| 3670 | 2833 if (CONSP(matchspec) && (CHARSETP(Ffind_charset(XCAR(matchspec))))) |
| 3659 | 2834 { |
| 2835 charset = Ffind_charset(XCAR(matchspec)); | |
| 2836 | |
| 2837 #ifdef DEBUG_XEMACS | |
| 2838 /* This is mostly to have somewhere to set debug breakpoints. */ | |
| 2839 if (!EQ(charset, Vcharset_ascii)) | |
| 2840 { | |
| 2841 non_ascii = 1; | |
| 2842 } | |
| 2843 #endif /* DEBUG_XEMACS */ | |
| 2844 | |
| 2845 if (!NILP(XCDR(matchspec))) | |
| 2846 { | |
| 2847 | |
| 2848 #define FROB(new_stage) if (EQ(Q##new_stage, XCDR(matchspec))) \ | |
| 2849 { \ | |
| 2850 stage = new_stage; \ | |
| 2851 } | |
| 2852 | |
| 2853 FROB(initial) | |
| 2854 else FROB(final) | |
| 2855 else assert(0); | |
| 2856 #undef FROB | |
| 2857 | |
| 2858 } | |
| 2859 } | |
| 2860 #endif /* MULE */ | |
| 2861 | |
| 2862 LIST_LOOP(rest, inst_list) | |
| 2863 { | |
| 2864 Lisp_Object tagged_inst = XCAR (rest); | |
| 2865 Lisp_Object tag_set = XCAR (tagged_inst); | |
| 2866 Lisp_Object val, the_instantiator; | |
| 2867 | |
| 2868 if (!device_matches_specifier_tag_set_p (device, tag_set)) | |
| 2869 { | |
|
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parents:
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diff
changeset
|
2870 continue; |
| 3659 | 2871 } |
| 2872 | |
| 2873 val = XCDR (tagged_inst); | |
| 2874 the_instantiator = val; | |
| 2875 | |
| 2876 if (!NILP(charset) && | |
| 2877 !(charset_matches_specifier_tag_set_p (charset, tag_set, stage))) | |
| 2878 { | |
| 2879 ++respected_charsets; | |
| 2880 continue; | |
| 2881 } | |
| 2882 | |
| 2883 if (HAS_SPECMETH_P (sp, instantiate)) | |
| 2884 val = call_with_suspended_errors | |
| 2885 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate), | |
| 2886 Qunbound, Qspecifier, errb, 5, specifier, | |
|
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parents:
3836
diff
changeset
|
2887 matchspec, domain, val, depth, no_fallback); |
| 3659 | 2888 |
| 2889 if (!UNBOUNDP (val)) | |
| 2890 { | |
| 2891 unbind_to (count); | |
| 2892 UNGCPRO; | |
| 2893 if (instantiator) | |
| 2894 *instantiator = the_instantiator; | |
| 2895 return val; | |
| 2896 } | |
| 2897 } | |
| 2898 | |
| 2899 /* We've checked all the tag sets, and checking the charset part of the | |
| 2900 specifier never returned 0 (preventing the attempted instantiation), so | |
| 2901 there's no need to loop for the second time to avoid checking the | |
| 2902 charsets. */ | |
| 2903 if (!respected_charsets) | |
| 2904 { | |
| 2905 unbind_to (count); | |
| 2906 UNGCPRO; | |
| 2907 return Qunbound; | |
| 2908 } | |
| 2909 | |
| 2910 /* Right, didn't instantiate a specifier last time, perhaps because we | |
| 2911 paid attention to the charset-specific aspects of the specifier. Try | |
| 2912 again without checking the charset information. | |
| 2913 | |
| 2914 We can't emulate the approach for devices, defaulting to matching all | |
| 2915 character sets for a given specifier, because $random font instantiator | |
| 2916 cannot usefully show all character sets, and indeed having it try is a | |
| 2917 failure on our part. */ | |
| 428 | 2918 LIST_LOOP (rest, inst_list) |
| 2919 { | |
| 2920 Lisp_Object tagged_inst = XCAR (rest); | |
| 2921 Lisp_Object tag_set = XCAR (tagged_inst); | |
| 3659 | 2922 Lisp_Object val, the_instantiator; |
| 2923 | |
| 2924 if (!device_matches_specifier_tag_set_p (device, tag_set)) | |
| 428 | 2925 { |
|
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parents:
3836
diff
changeset
|
2926 continue; |
| 3659 | 2927 } |
| 2928 | |
| 2929 val = XCDR (tagged_inst); | |
| 2930 the_instantiator = val; | |
| 2931 | |
| 2932 if (HAS_SPECMETH_P (sp, instantiate)) | |
| 2933 val = call_with_suspended_errors | |
| 2934 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate), | |
| 2935 Qunbound, Qspecifier, errb, 5, specifier, | |
|
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515b91f904c1
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Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2936 matchspec, domain, val, depth, no_fallback); |
| 3659 | 2937 |
| 2938 if (!UNBOUNDP (val)) | |
| 2939 { | |
| 2940 unbind_to (count); | |
| 2941 UNGCPRO; | |
| 2942 if (instantiator) | |
| 2943 *instantiator = the_instantiator; | |
| 2944 return val; | |
| 428 | 2945 } |
| 2946 } | |
| 2947 | |
| 771 | 2948 unbind_to (count); |
| 428 | 2949 UNGCPRO; |
| 2950 return Qunbound; | |
| 2951 } | |
| 2952 | |
| 2953 /* Given a SPECIFIER and a DOMAIN, return a specific instance for that | |
| 2954 specifier. Try to find one by checking the specifier types from most | |
| 4437 | 2955 specific (window) to most general (global). If we find an instance, |
| 428 | 2956 return it. Otherwise return Qunbound. */ |
| 2957 | |
| 2958 #define CHECK_INSTANCE_ENTRY(key, matchspec, type) do { \ | |
| 3659 | 2959 Lisp_Object *CIE_inst_list = \ |
| 2960 specifier_get_inst_list (specifier, key, type); \ | |
| 2961 if (CIE_inst_list) \ | |
| 2962 { \ | |
| 2963 Lisp_Object CIE_val = \ | |
| 2964 specifier_instance_from_inst_list (specifier, matchspec, \ | |
| 2965 domain, *CIE_inst_list, \ | |
| 2966 errb, no_quit, depth, \ | |
|
4426
515b91f904c1
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Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2967 instantiator, no_fallback); \ |
| 3659 | 2968 if (!UNBOUNDP (CIE_val)) \ |
| 2969 return CIE_val; \ | |
| 2970 } \ | |
| 2971 } while (0) | |
| 428 | 2972 |
| 2973 /* We accept any window, frame or device domain and do our checking | |
| 2974 starting from as specific a locale type as we can determine from the | |
| 2975 domain we are passed and going on up through as many other locale types | |
| 2976 as we can determine. In practice, when called from redisplay the | |
| 2977 arg will usually be a window and occasionally a frame. If | |
| 2978 triggered by a user call, who knows what it will usually be. */ | |
| 2953 | 2979 |
| 2980 static Lisp_Object | |
| 2981 specifier_instance_1 (Lisp_Object specifier, Lisp_Object matchspec, | |
| 2982 Lisp_Object domain, Error_Behavior errb, int no_quit, | |
| 2983 int no_fallback, Lisp_Object depth, | |
| 2984 Lisp_Object *instantiator) | |
| 428 | 2985 { |
| 2986 Lisp_Object buffer = Qnil; | |
| 2987 Lisp_Object window = Qnil; | |
| 2988 Lisp_Object frame = Qnil; | |
| 2989 Lisp_Object device = Qnil; | |
| 444 | 2990 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2991 |
| 2953 | 2992 if (instantiator) |
| 2993 *instantiator = Qunbound; | |
| 2994 | |
| 428 | 2995 /* Attempt to determine buffer, window, frame, and device from the |
| 2996 domain. */ | |
| 442 | 2997 /* #### get image instances out of domains! */ |
| 2998 if (IMAGE_INSTANCEP (domain)) | |
| 2999 window = DOMAIN_WINDOW (domain); | |
| 3000 else if (WINDOWP (domain)) | |
| 428 | 3001 window = domain; |
| 3002 else if (FRAMEP (domain)) | |
| 3003 frame = domain; | |
| 3004 else if (DEVICEP (domain)) | |
| 3005 device = domain; | |
| 3006 else | |
| 442 | 3007 /* dmoore writes: [dammit, this should just signal an error or something |
| 3008 shouldn't it?] | |
| 3009 | |
| 3010 No. Errors are handled in Lisp primitives implementation. | |
| 428 | 3011 Invalid domain is a design error here - kkm. */ |
| 2500 | 3012 ABORT (); |
| 428 | 3013 |
| 3014 if (NILP (buffer) && !NILP (window)) | |
| 444 | 3015 buffer = WINDOW_BUFFER (XWINDOW (window)); |
| 428 | 3016 if (NILP (frame) && !NILP (window)) |
| 3017 frame = XWINDOW (window)->frame; | |
| 3018 if (NILP (device)) | |
| 3019 /* frame had better exist; if device is undeterminable, something | |
| 3020 really went wrong. */ | |
| 444 | 3021 device = FRAME_DEVICE (XFRAME (frame)); |
| 428 | 3022 |
| 3023 /* device had better be determined by now; abort if not. */ | |
| 2286 | 3024 (void) DEVICE_CLASS (XDEVICE (device)); |
| 428 | 3025 |
| 3026 depth = make_int (1 + XINT (depth)); | |
| 3027 if (XINT (depth) > 20) | |
| 3028 { | |
| 563 | 3029 maybe_signal_error (Qstack_overflow, |
| 3030 "Apparent loop in specifier inheritance", | |
| 3031 Qunbound, Qspecifier, errb); | |
| 428 | 3032 /* The specification is fucked; at least try the fallback |
| 3033 (which better not be fucked, because it's not changeable | |
| 3034 from Lisp). */ | |
| 3035 depth = Qzero; | |
| 3036 goto do_fallback; | |
| 3037 } | |
| 3038 | |
| 434 | 3039 retry: |
| 428 | 3040 /* First see if we can generate one from the window specifiers. */ |
| 3041 if (!NILP (window)) | |
| 3042 CHECK_INSTANCE_ENTRY (window, matchspec, LOCALE_WINDOW); | |
| 3043 | |
| 3044 /* Next see if we can generate one from the buffer specifiers. */ | |
| 3045 if (!NILP (buffer)) | |
| 3046 CHECK_INSTANCE_ENTRY (buffer, matchspec, LOCALE_BUFFER); | |
| 3047 | |
| 3048 /* Next see if we can generate one from the frame specifiers. */ | |
| 3049 if (!NILP (frame)) | |
| 3050 CHECK_INSTANCE_ENTRY (frame, matchspec, LOCALE_FRAME); | |
| 3051 | |
| 3052 /* If we still haven't succeeded try with the device specifiers. */ | |
| 3053 CHECK_INSTANCE_ENTRY (device, matchspec, LOCALE_DEVICE); | |
| 3054 | |
| 3055 /* Last and least try the global specifiers. */ | |
| 3056 CHECK_INSTANCE_ENTRY (Qglobal, matchspec, LOCALE_GLOBAL); | |
| 3057 | |
| 434 | 3058 do_fallback: |
| 428 | 3059 /* We're out of specifiers and we still haven't generated an |
| 3060 instance. At least try the fallback ... If this fails, | |
| 3061 then we just return Qunbound. */ | |
| 3062 | |
| 3063 if (no_fallback || NILP (sp->fallback)) | |
| 3064 /* I said, I don't want the fallbacks. */ | |
| 3065 return Qunbound; | |
| 3066 | |
| 3067 if (SPECIFIERP (sp->fallback)) | |
| 3068 { | |
| 3069 /* If you introduced loops in the default specifier chain, | |
| 3070 then you're fucked, so you better not do this. */ | |
| 3071 specifier = sp->fallback; | |
| 3072 sp = XSPECIFIER (specifier); | |
| 3073 goto retry; | |
| 3074 } | |
| 3075 | |
| 3076 assert (CONSP (sp->fallback)); | |
| 3077 return specifier_instance_from_inst_list (specifier, matchspec, domain, | |
| 3078 sp->fallback, errb, no_quit, | |
|
4426
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Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3079 depth, instantiator, |
|
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3080 no_fallback); |
| 428 | 3081 } |
| 3082 #undef CHECK_INSTANCE_ENTRY | |
| 3083 | |
| 3084 Lisp_Object | |
| 2953 | 3085 specifier_instance (Lisp_Object specifier, Lisp_Object matchspec, |
| 3086 Lisp_Object domain, Error_Behavior errb, int no_quit, | |
| 3087 int no_fallback, Lisp_Object depth) | |
| 3088 { | |
| 3089 return specifier_instance_1 (specifier, matchspec, domain, errb, | |
| 3090 no_quit, no_fallback, depth, NULL); | |
| 3091 } | |
| 3092 | |
| 3093 Lisp_Object | |
| 428 | 3094 specifier_instance_no_quit (Lisp_Object specifier, Lisp_Object matchspec, |
| 578 | 3095 Lisp_Object domain, Error_Behavior errb, |
| 428 | 3096 int no_fallback, Lisp_Object depth) |
| 3097 { | |
| 2953 | 3098 return specifier_instance_1 (specifier, matchspec, domain, errb, |
| 3099 1, no_fallback, depth, NULL); | |
| 3100 } | |
| 3101 | |
| 3102 static Lisp_Object | |
| 3103 specifier_matching_foo (Lisp_Object specifier, | |
| 3104 Lisp_Object matchspec, | |
| 3105 Lisp_Object domain, | |
| 3106 Lisp_Object default_, | |
| 3107 Lisp_Object no_fallback, | |
| 3108 int want_instantiator) | |
| 3109 { | |
| 3110 Lisp_Object instance, instantiator; | |
| 3111 | |
| 3112 CHECK_SPECIFIER (specifier); | |
| 3113 if (!UNBOUNDP (matchspec)) | |
| 3114 check_valid_specifier_matchspec (matchspec, | |
| 3115 XSPECIFIER (specifier)->methods, | |
| 3116 ERROR_ME); | |
| 3117 domain = decode_domain (domain); | |
| 3118 | |
| 3119 instance = specifier_instance_1 (specifier, matchspec, domain, ERROR_ME, | |
| 3120 0, !NILP (no_fallback), Qzero, | |
| 3121 &instantiator); | |
| 3122 return UNBOUNDP (instance) ? default_ : want_instantiator ? instantiator : | |
| 3123 instance; | |
| 428 | 3124 } |
| 3125 | |
| 3126 DEFUN ("specifier-instance", Fspecifier_instance, 1, 4, 0, /* | |
| 3127 Instantiate SPECIFIER (return its value) in DOMAIN. | |
| 3128 If no instance can be generated for this domain, return DEFAULT. | |
| 3129 | |
| 2953 | 3130 DOMAIN is nearly always a window (defaulting to the selected window if |
| 3131 omitted), but can be a window, frame, or device. Other values that are legal | |
| 428 | 3132 as a locale (e.g. a buffer) are not valid as a domain because they do not |
| 3133 provide enough information to identify a particular device (see | |
| 2953 | 3134 `valid-specifier-domain-p'). Window domains are used internally in nearly |
| 3135 all circumstances when computing specifier instances of display properties. | |
| 3136 Frame domains are used in a few circumstances (such as when computing the | |
| 3137 geometry of a frame based on properties such as the toolbar widths), and | |
| 3138 device domains are rarely if ever used internally. | |
| 3139 | |
| 3140 This function looks through the specifications in SPECIFIER that correspond | |
| 3141 to DOMAIN, from most specific (specifications for DOMAIN itself) to most | |
| 3142 general (global specifications), for matching instantiators, and attempts | |
| 3143 to compute an instance value for each instantiator found. The first | |
| 3144 successfully computed value is returned. The corresponding instantiator | |
| 3145 can be returned using `specifier-instantiator'. | |
| 3146 | |
| 3147 A specifier is a generalized object for controlling the value of a property -- | |
| 3148 typically, but not necessarily, a display-related property -- that can vary | |
| 3149 over particular buffers, frames, device types, etc. | |
| 3150 | |
| 3151 A fundamental distinction must be made between the specification of a | |
| 3152 property's value, and the resulting value itself. This distinction is | |
| 3153 clearest in the case of an image -- the specification describes the source | |
| 3154 of the image (for example, a file of JPEG data), and the resulting value | |
| 3155 encapsulates a window-system object describing the image as displayed on a | |
| 3156 particular device (for example, a particular X display). The specification | |
| 3157 might also be an instruction of the form "use the background pixmap of the | |
| 3158 `modeline' face". A similar mapping exists between color strings and | |
| 3159 color-instance objects, and font strings and font-instance objects. In | |
| 3160 some cases, the specification and the resulting value are of the same type, | |
| 3161 but the distinction is still logically made. | |
| 3162 | |
| 3163 The specification of a value is called an instantiator, and the resulting | |
| 3164 value the instance. | |
| 428 | 3165 |
| 3166 "Instantiating" a specifier in a particular domain means determining | |
| 3167 the specifier's "value" in that domain. This is accomplished by | |
| 3168 searching through the specifications in the specifier that correspond | |
| 3169 to all locales that can be derived from the given domain, from specific | |
| 3170 to general. In most cases, the domain is an Emacs window. In that case | |
| 3171 specifications are searched for as follows: | |
| 3172 | |
| 3173 1. A specification whose locale is the window itself; | |
| 3174 2. A specification whose locale is the window's buffer; | |
| 3175 3. A specification whose locale is the window's frame; | |
| 3176 4. A specification whose locale is the window's frame's device; | |
| 2953 | 3177 5. A specification whose locale is `global'. |
| 428 | 3178 |
| 3179 If all of those fail, then the C-code-provided fallback value for | |
| 3180 this specifier is consulted (see `specifier-fallback'). If it is | |
| 3181 an inst-list, then this function attempts to instantiate that list | |
| 3182 just as when a specification is located in the first five steps above. | |
| 3183 If the fallback is a specifier, `specifier-instance' is called | |
| 3184 recursively on this specifier and the return value used. Note, | |
| 3185 however, that if the optional argument NO-FALLBACK is non-nil, | |
| 3186 the fallback value will not be consulted. | |
| 3187 | |
| 3188 Note that there may be more than one specification matching a particular | |
| 3189 locale; all such specifications are considered before looking for any | |
| 3190 specifications for more general locales. Any particular specification | |
| 3191 that is found may be rejected because its tag set does not match the | |
| 3192 device being instantiated over, or because the specification is not | |
| 3193 valid for the device of the given domain (e.g. the font or color name | |
| 3194 does not exist for this particular X server). | |
| 3195 | |
| 793 | 3196 NOTE: When errors occur in the process of trying a particular instantiator, |
| 3197 and the instantiator is thus skipped, warnings will be issued at level | |
| 3198 `debug'. Normally, such warnings are ignored entirely, but you can change | |
| 3199 this by setting `log-warning-minimum-level'. This is useful if you're | |
| 3200 trying to debug why particular instantiators are not being processed. | |
| 3201 | |
| 428 | 3202 The returned value is dependent on the type of specifier. For example, |
| 3203 for a font specifier (as returned by the `face-font' function), the returned | |
| 3204 value will be a font-instance object. For glyphs, the returned value | |
| 2953 | 3205 will be an image-instance object. |
| 428 | 3206 |
| 3207 See also `specifier-matching-instance'. | |
| 3208 */ | |
| 3209 (specifier, domain, default_, no_fallback)) | |
| 3210 { | |
| 2953 | 3211 return specifier_matching_foo (specifier, Qunbound, domain, default_, |
| 3212 no_fallback, 0); | |
| 3213 } | |
| 3214 | |
| 3215 DEFUN ("specifier-instantiator", Fspecifier_instantiator, 1, 4, 0, /* | |
| 3216 Return instantiator that would be used to instantiate SPECIFIER in DOMAIN. | |
| 3217 If no instance can be generated for this domain, return DEFAULT. | |
| 3218 | |
| 3219 DOMAIN should be a window, frame, or device. Other values that are legal | |
| 3220 as a locale (e.g. a buffer) are not valid as a domain because they do not | |
| 3221 provide enough information to identify a particular device (see | |
| 3222 `valid-specifier-domain-p'). DOMAIN defaults to the selected window | |
| 3223 if omitted. | |
| 3224 | |
| 3225 See `specifier-instance' for more information about the instantiation process. | |
| 3226 */ | |
| 3227 (specifier, domain, default_, no_fallback)) | |
| 3228 { | |
| 3229 return specifier_matching_foo (specifier, Qunbound, domain, default_, | |
| 3230 no_fallback, 1); | |
| 428 | 3231 } |
| 3232 | |
| 3233 DEFUN ("specifier-matching-instance", Fspecifier_matching_instance, 2, 5, 0, /* | |
| 3234 Return an instance for SPECIFIER in DOMAIN that matches MATCHSPEC. | |
| 3235 If no instance can be generated for this domain, return DEFAULT. | |
| 3236 | |
| 3237 This function is identical to `specifier-instance' except that a | |
| 3238 specification will only be considered if it matches MATCHSPEC. | |
| 3239 The definition of "match", and allowed values for MATCHSPEC, are | |
| 3240 dependent on the particular type of specifier. Here are some examples: | |
| 3241 | |
| 3242 -- For chartable (e.g. display table) specifiers, MATCHSPEC should be a | |
| 3243 character, and the specification (a chartable) must give a value for | |
| 3244 that character in order to be considered. This allows you to specify, | |
| 3245 e.g., a buffer-local display table that only gives values for particular | |
| 3246 characters. All other characters are handled as if the buffer-local | |
| 3247 display table is not there. (Chartable specifiers are not yet | |
| 3248 implemented.) | |
| 3249 | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3250 -- For font specifiers, MATCHSPEC should be a cons (CHARSET . STAGE). |
| 3674 | 3251 The defined stages are currently `initial' and `final'. On X11, 'initial |
| 3252 is used when the font matching process is looking for fonts that match | |
| 3253 the desired registries of the charset--see the `charset-registries' | |
| 3254 function. If that match process fails, then the 'final stage comes into | |
| 3255 play; this means that a more general lookup is desired, and that a font | |
| 3256 doesn't necessarily have to match the desired XLFD for the face, just the | |
| 3257 charset repertoire for this charset. It also means that the charset | |
| 3258 registry and encoding used will be `iso10646-1', and the characters will | |
| 3259 be converted to display using that registry. | |
| 3260 | |
| 3261 See `define-specifier-tag' for details on how to create a tag that | |
| 3262 specifies a given character set and stage combination. You can supply | |
| 3263 such a tag to `set-face-font' in order to set a face's font for that | |
| 3264 character set and stage combination. | |
| 428 | 3265 */ |
| 3266 (specifier, matchspec, domain, default_, no_fallback)) | |
| 3267 { | |
| 2953 | 3268 return specifier_matching_foo (specifier, matchspec, domain, default_, |
| 3269 no_fallback, 0); | |
| 3270 } | |
| 3271 | |
| 3272 DEFUN ("specifier-matching-instantiator", Fspecifier_matching_instantiator, | |
| 3273 2, 5, 0, /* | |
| 3274 Return instantiator for instance of SPECIFIER in DOMAIN that matches MATCHSPEC. | |
| 3275 If no instance can be generated for this domain, return DEFAULT. | |
| 3276 | |
| 3277 This function is identical to `specifier-matching-instance' but returns | |
| 3278 the instantiator used to generate the instance, rather than the actual | |
| 3279 instance. | |
| 3280 */ | |
| 3281 (specifier, matchspec, domain, default_, no_fallback)) | |
| 3282 { | |
| 3283 return specifier_matching_foo (specifier, matchspec, domain, default_, | |
| 3284 no_fallback, 1); | |
| 3285 } | |
| 3286 | |
| 3287 static Lisp_Object | |
| 3288 specifier_matching_foo_from_inst_list (Lisp_Object specifier, | |
| 3289 Lisp_Object matchspec, | |
| 3290 Lisp_Object domain, | |
| 3291 Lisp_Object inst_list, | |
| 3292 Lisp_Object default_, | |
| 3293 int want_instantiator) | |
| 3294 { | |
| 3295 Lisp_Object val = Qunbound; | |
| 3296 Lisp_Specifier *sp = XSPECIFIER (specifier); | |
| 3297 struct gcpro gcpro1; | |
| 3298 Lisp_Object built_up_list = Qnil; | |
| 3299 Lisp_Object instantiator; | |
| 428 | 3300 |
| 3301 CHECK_SPECIFIER (specifier); | |
| 2953 | 3302 if (!UNBOUNDP (matchspec)) |
| 3303 check_valid_specifier_matchspec (matchspec, | |
| 3304 XSPECIFIER (specifier)->methods, | |
| 3305 ERROR_ME); | |
| 3306 check_valid_domain (domain); | |
| 3307 check_valid_inst_list (inst_list, sp->methods, ERROR_ME); | |
| 3308 GCPRO1 (built_up_list); | |
| 3309 built_up_list = build_up_processed_list (specifier, domain, inst_list); | |
| 3310 if (!NILP (built_up_list)) | |
| 3311 val = specifier_instance_from_inst_list (specifier, matchspec, domain, | |
| 3312 built_up_list, ERROR_ME, | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3313 0, Qzero, &instantiator, 0); |
| 2953 | 3314 UNGCPRO; |
| 3315 return UNBOUNDP (val) ? default_ : want_instantiator ? instantiator : val; | |
| 3316 | |
| 428 | 3317 } |
| 3318 | |
| 3319 DEFUN ("specifier-instance-from-inst-list", Fspecifier_instance_from_inst_list, | |
| 3320 3, 4, 0, /* | |
| 3321 Attempt to convert a particular inst-list into an instance. | |
| 3322 This attempts to instantiate INST-LIST in the given DOMAIN, | |
| 3323 as if INST-LIST existed in a specification in SPECIFIER. If | |
| 3324 the instantiation fails, DEFAULT is returned. In most circumstances, | |
| 3325 you should not use this function; use `specifier-instance' instead. | |
| 3326 */ | |
| 3327 (specifier, domain, inst_list, default_)) | |
| 3328 { | |
| 2953 | 3329 return specifier_matching_foo_from_inst_list (specifier, Qunbound, |
| 3330 domain, inst_list, default_, | |
| 3331 0); | |
| 3332 } | |
| 3333 | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3334 DEFUN ("specifier-instantiator-from-inst-list", |
| 3659 | 3335 Fspecifier_instantiator_from_inst_list, 3, 4, 0, /* |
| 2953 | 3336 Attempt to convert an inst-list into an instance; return instantiator. |
| 3337 This is identical to `specifier-instance-from-inst-list' but returns | |
| 3338 the instantiator used to generate the instance, rather than the instance | |
| 3339 itself. | |
| 3340 */ | |
| 3341 (specifier, domain, inst_list, default_)) | |
| 3342 { | |
| 3343 return specifier_matching_foo_from_inst_list (specifier, Qunbound, | |
| 3344 domain, inst_list, default_, | |
| 3345 1); | |
| 428 | 3346 } |
| 3347 | |
| 442 | 3348 DEFUN ("specifier-matching-instance-from-inst-list", |
| 3349 Fspecifier_matching_instance_from_inst_list, | |
| 428 | 3350 4, 5, 0, /* |
| 3351 Attempt to convert a particular inst-list into an instance. | |
| 3352 This attempts to instantiate INST-LIST in the given DOMAIN | |
| 3353 \(as if INST-LIST existed in a specification in SPECIFIER), | |
| 3354 matching the specifications against MATCHSPEC. | |
| 3355 | |
| 3356 This function is analogous to `specifier-instance-from-inst-list' | |
| 3357 but allows for specification-matching as in `specifier-matching-instance'. | |
| 3358 See that function for a description of exactly how the matching process | |
| 3359 works. | |
| 3360 */ | |
| 3361 (specifier, matchspec, domain, inst_list, default_)) | |
| 3362 { | |
| 2953 | 3363 return specifier_matching_foo_from_inst_list (specifier, matchspec, |
| 3364 domain, inst_list, default_, | |
| 3365 0); | |
| 3366 } | |
| 3367 | |
| 3368 DEFUN ("specifier-matching-instantiator-from-inst-list", | |
| 3369 Fspecifier_matching_instantiator_from_inst_list, | |
| 3370 4, 5, 0, /* | |
| 3371 Attempt to convert an inst-list into an instance; return instantiator. | |
| 3372 This is identical to `specifier-matching-instance-from-inst-list' but returns | |
| 3373 the instantiator used to generate the instance, rather than the instance | |
| 3374 itself. | |
| 3375 */ | |
| 3376 (specifier, matchspec, domain, inst_list, default_)) | |
| 3377 { | |
| 3378 return specifier_matching_foo_from_inst_list (specifier, matchspec, | |
| 3379 domain, inst_list, default_, | |
| 3380 1); | |
| 428 | 3381 } |
| 3382 | |
| 3383 | |
| 3384 /************************************************************************/ | |
| 3385 /* Caching in the struct window or frame */ | |
| 3386 /************************************************************************/ | |
| 3387 | |
| 853 | 3388 /* Cause the current value of SPECIFIER in the domain of each frame and/or |
| 3389 window to be cached in the struct frame at STRUCT_FRAME_OFFSET and the | |
| 3390 struct window at STRUCT_WINDOW_OFFSET. When the value changes in a | |
| 3391 particular window, VALUE_CHANGED_IN_WINDOW is called. When the value | |
| 3392 changes in a particular frame, VALUE_CHANGED_IN_FRAME is called. | |
| 3393 | |
| 3394 Either STRUCT_WINDOW_OFFSET or STRUCT_FRAME_OFFSET can be 0 to indicate | |
| 3395 no caching in that sort of object. However, if they're not 0, you | |
| 3396 must supply a corresponding value-changed function. (This is the case | |
| 3397 so that you are forced to consider the ramifications of a value change. | |
| 3398 You nearly always need to do something, e.g. set a dirty flag.) | |
| 3399 | |
| 3400 If you create a built-in specifier, you should do the following: | |
| 3401 | |
| 3402 - Make sure the file you create the specifier in has a | |
| 3659 | 3403 specifier_vars_of_foo() function. If not, create it, declare it in |
| 3404 symsinit.h, and make sure it's called in the appropriate place in | |
| 3405 emacs.c. | |
| 853 | 3406 - In specifier_vars_of_foo(), do a DEFVAR_SPECIFIER(), followed by |
| 3659 | 3407 initializing the specifier using Fmake_specifier(), followed by |
| 3408 set_specifier_fallback(), followed (optionally) by | |
| 3409 set_specifier_caching(). | |
| 853 | 3410 - If you used set_specifier_caching(), make sure to create the |
| 3659 | 3411 appropriate value-changed functions. Also make sure to add the |
| 3412 appropriate slots where the values are cached to frameslots.h and | |
| 3413 winslots.h. | |
| 853 | 3414 |
| 3415 Do a grep for menubar_visible_p for an example. | |
| 3416 */ | |
| 428 | 3417 |
| 3418 /* #### It would be nice if the specifier caching automatically knew | |
| 3419 about specifier fallbacks, so we didn't have to do it ourselves. */ | |
| 3420 | |
| 3421 void | |
| 3422 set_specifier_caching (Lisp_Object specifier, int struct_window_offset, | |
| 3423 void (*value_changed_in_window) | |
| 3424 (Lisp_Object specifier, struct window *w, | |
| 3425 Lisp_Object oldval), | |
| 3426 int struct_frame_offset, | |
| 3427 void (*value_changed_in_frame) | |
| 3428 (Lisp_Object specifier, struct frame *f, | |
| 444 | 3429 Lisp_Object oldval), |
| 3430 int always_recompute) | |
| 428 | 3431 { |
| 440 | 3432 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 3433 assert (!GHOST_SPECIFIER_P (sp)); |
| 3434 | |
| 3435 if (!sp->caching) | |
| 3092 | 3436 #ifdef NEW_GC |
| 3437 sp->caching = alloc_lrecord_type (struct specifier_caching, | |
| 3438 &lrecord_specifier_caching); | |
| 3439 #else /* not NEW_GC */ | |
| 3659 | 3440 sp->caching = xnew_and_zero (struct specifier_caching); |
| 3092 | 3441 #endif /* not NEW_GC */ |
| 428 | 3442 sp->caching->offset_into_struct_window = struct_window_offset; |
| 3443 sp->caching->value_changed_in_window = value_changed_in_window; | |
| 3444 sp->caching->offset_into_struct_frame = struct_frame_offset; | |
| 3445 sp->caching->value_changed_in_frame = value_changed_in_frame; | |
| 853 | 3446 if (struct_window_offset) |
| 3447 assert (value_changed_in_window); | |
| 3448 if (struct_frame_offset) | |
| 3449 assert (value_changed_in_frame); | |
| 444 | 3450 sp->caching->always_recompute = always_recompute; |
| 428 | 3451 Vcached_specifiers = Fcons (specifier, Vcached_specifiers); |
| 3452 if (BODILY_SPECIFIER_P (sp)) | |
| 3453 GHOST_SPECIFIER(sp)->caching = sp->caching; | |
| 3454 recompute_cached_specifier_everywhere (specifier); | |
| 3455 } | |
| 3456 | |
| 3457 static void | |
| 3458 recompute_one_cached_specifier_in_window (Lisp_Object specifier, | |
| 3459 struct window *w) | |
| 3460 { | |
| 3461 Lisp_Object window; | |
| 444 | 3462 Lisp_Object newval, *location, oldval; |
| 428 | 3463 |
| 3464 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier))); | |
| 3465 | |
| 793 | 3466 window = wrap_window (w); |
| 428 | 3467 |
| 3468 newval = specifier_instance (specifier, Qunbound, window, ERROR_ME_WARN, | |
| 3469 0, 0, Qzero); | |
| 3470 /* If newval ended up Qunbound, then the calling functions | |
| 3471 better be able to deal. If not, set a default so this | |
| 3472 never happens or correct it in the value_changed_in_window | |
| 3473 method. */ | |
| 3474 location = (Lisp_Object *) | |
| 3475 ((char *) w + XSPECIFIER (specifier)->caching->offset_into_struct_window); | |
| 442 | 3476 /* #### What's the point of this check, other than to optimize image |
| 3477 instance instantiation? Unless you specify a caching instantiate | |
| 3478 method the instantiation that specifier_instance will do will | |
| 3479 always create a new copy. Thus EQ will always fail. Unfortunately | |
| 3480 calling equal is no good either as this doesn't take into account | |
| 3481 things attached to the specifier - for instance strings on | |
| 3482 extents. --andyp */ | |
| 444 | 3483 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute) |
| 428 | 3484 { |
| 444 | 3485 oldval = *location; |
| 428 | 3486 *location = newval; |
| 3487 (XSPECIFIER (specifier)->caching->value_changed_in_window) | |
| 3488 (specifier, w, oldval); | |
| 3489 } | |
| 3490 } | |
| 3491 | |
| 3492 static void | |
| 3493 recompute_one_cached_specifier_in_frame (Lisp_Object specifier, | |
| 3494 struct frame *f) | |
| 3495 { | |
| 3496 Lisp_Object frame; | |
| 444 | 3497 Lisp_Object newval, *location, oldval; |
| 428 | 3498 |
| 3499 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier))); | |
| 3500 | |
| 793 | 3501 frame = wrap_frame (f); |
| 428 | 3502 |
| 3503 newval = specifier_instance (specifier, Qunbound, frame, ERROR_ME_WARN, | |
| 3504 0, 0, Qzero); | |
| 3505 /* If newval ended up Qunbound, then the calling functions | |
| 3506 better be able to deal. If not, set a default so this | |
| 3507 never happens or correct it in the value_changed_in_frame | |
| 3508 method. */ | |
| 3509 location = (Lisp_Object *) | |
| 3510 ((char *) f + XSPECIFIER (specifier)->caching->offset_into_struct_frame); | |
| 444 | 3511 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute) |
| 428 | 3512 { |
| 444 | 3513 oldval = *location; |
| 428 | 3514 *location = newval; |
| 3515 (XSPECIFIER (specifier)->caching->value_changed_in_frame) | |
| 3516 (specifier, f, oldval); | |
| 3517 } | |
| 3518 } | |
| 3519 | |
| 3520 void | |
| 3521 recompute_all_cached_specifiers_in_window (struct window *w) | |
| 3522 { | |
| 3523 Lisp_Object rest; | |
| 3524 | |
| 3525 LIST_LOOP (rest, Vcached_specifiers) | |
| 3526 { | |
| 3527 Lisp_Object specifier = XCAR (rest); | |
| 3528 if (XSPECIFIER (specifier)->caching->offset_into_struct_window) | |
| 3529 recompute_one_cached_specifier_in_window (specifier, w); | |
| 3530 } | |
| 3531 } | |
| 3532 | |
| 3533 void | |
| 3534 recompute_all_cached_specifiers_in_frame (struct frame *f) | |
| 3535 { | |
| 3536 Lisp_Object rest; | |
| 3537 | |
| 3538 LIST_LOOP (rest, Vcached_specifiers) | |
| 3539 { | |
| 3540 Lisp_Object specifier = XCAR (rest); | |
| 3541 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame) | |
| 3542 recompute_one_cached_specifier_in_frame (specifier, f); | |
| 3543 } | |
| 3544 } | |
| 3545 | |
| 3546 static int | |
| 3547 recompute_cached_specifier_everywhere_mapfun (struct window *w, | |
| 3548 void *closure) | |
| 3549 { | |
| 3550 Lisp_Object specifier = Qnil; | |
| 3551 | |
| 826 | 3552 specifier = VOID_TO_LISP (closure); |
| 428 | 3553 recompute_one_cached_specifier_in_window (specifier, w); |
| 3554 return 0; | |
| 3555 } | |
| 3556 | |
| 3557 static void | |
| 3558 recompute_cached_specifier_everywhere (Lisp_Object specifier) | |
| 3559 { | |
| 3560 Lisp_Object frmcons, devcons, concons; | |
| 3561 | |
| 3562 specifier = bodily_specifier (specifier); | |
| 3563 | |
| 3564 if (!XSPECIFIER (specifier)->caching) | |
| 3565 return; | |
| 3566 | |
| 3567 if (XSPECIFIER (specifier)->caching->offset_into_struct_window) | |
| 3568 { | |
| 3569 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 3570 map_windows (XFRAME (XCAR (frmcons)), | |
| 3571 recompute_cached_specifier_everywhere_mapfun, | |
| 3572 LISP_TO_VOID (specifier)); | |
| 3573 } | |
| 3574 | |
| 3575 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame) | |
| 3576 { | |
| 3577 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 3578 recompute_one_cached_specifier_in_frame (specifier, | |
| 3579 XFRAME (XCAR (frmcons))); | |
| 3580 } | |
| 3581 } | |
| 3582 | |
| 3583 DEFUN ("set-specifier-dirty-flag", Fset_specifier_dirty_flag, 1, 1, 0, /* | |
| 3584 Force recomputation of any caches associated with SPECIFIER. | |
| 3585 Note that this automatically happens whenever you change a specification | |
| 3586 in SPECIFIER; you do not have to call this function then. | |
| 3587 One example of where this function is useful is when you have a | |
| 3588 toolbar button whose `active-p' field is an expression to be | |
| 3589 evaluated. Calling `set-specifier-dirty-flag' on the | |
| 3590 toolbar specifier will force the `active-p' fields to be | |
| 3591 recomputed. | |
| 3592 */ | |
| 3593 (specifier)) | |
| 3594 { | |
| 3595 CHECK_SPECIFIER (specifier); | |
| 3596 recompute_cached_specifier_everywhere (specifier); | |
| 3597 return Qnil; | |
| 3598 } | |
| 3599 | |
| 3600 | |
| 3601 /************************************************************************/ | |
| 3602 /* Generic specifier type */ | |
| 3603 /************************************************************************/ | |
| 3604 | |
| 3605 DEFINE_SPECIFIER_TYPE (generic); | |
| 3606 | |
| 3607 #if 0 | |
| 3608 | |
| 3609 /* This is the string that used to be in `generic-specifier-p'. | |
| 3610 The idea is good, but it doesn't quite work in the form it's | |
| 3611 in. (One major problem is that validating an instantiator | |
| 3612 is supposed to require only that the specifier type is passed, | |
| 3613 while with this approach the actual specifier is needed.) | |
| 3614 | |
| 3615 What really needs to be done is to write a function | |
| 3616 `make-specifier-type' that creates new specifier types. | |
| 442 | 3617 |
| 3618 #### [I'll look into this for 19.14.] Well, sometime. (Currently | |
| 3619 May 2000, 21.2 is in development. 19.14 was released in June 1996.) */ | |
| 428 | 3620 |
| 3621 "A generic specifier is a generalized kind of specifier with user-defined\n" | |
| 3622 "semantics. The instantiator can be any kind of Lisp object, and the\n" | |
| 3623 "instance computed from it is likewise any kind of Lisp object. The\n" | |
| 3624 "SPECIFIER-DATA should be an alist of methods governing how the specifier\n" | |
| 3625 "works. All methods are optional, and reasonable default methods will be\n" | |
| 2953 | 3626 "provided. Currently there are two defined methods: `instantiate' and\n" |
| 3627 "`validate'.\n" | |
| 428 | 3628 "\n" |
| 2953 | 3629 "`instantiate' specifies how to do the instantiation; if omitted, the\n" |
| 428 | 3630 "instantiator itself is simply returned as the instance. The method\n" |
| 3631 "should be a function that accepts three parameters (a specifier, the\n" | |
| 3632 "instantiator that matched the domain being instantiated over, and that\n" | |
| 3633 "domain), and should return a one-element list containing the instance,\n" | |
| 3634 "or nil if no instance exists. Note that the domain passed to this function\n" | |
| 3635 "is the domain being instantiated over, which may not be the same as the\n" | |
| 3636 "locale contained in the specification corresponding to the instantiator\n" | |
| 3637 "(for example, the domain being instantiated over could be a window, but\n" | |
| 3638 "the locale corresponding to the passed instantiator could be the window's\n" | |
| 3639 "buffer or frame).\n" | |
| 3640 "\n" | |
| 2953 | 3641 "`validate' specifies whether a given instantiator is valid; if omitted,\n" |
| 428 | 3642 "all instantiators are considered valid. It should be a function of\n" |
| 3643 "two arguments: an instantiator and a flag CAN-SIGNAL-ERROR. If this\n" | |
| 3644 "flag is false, the function must simply return t or nil indicating\n" | |
| 3645 "whether the instantiator is valid. If this flag is true, the function\n" | |
| 3646 "is free to signal an error if it encounters an invalid instantiator\n" | |
| 3647 "(this can be useful for issuing a specific error about exactly why the\n" | |
| 3648 "instantiator is valid). It can also return nil to indicate an invalid\n" | |
| 3649 "instantiator; in this case, a general error will be signalled." | |
| 3650 | |
| 3651 #endif /* 0 */ | |
| 3652 | |
| 3653 DEFUN ("generic-specifier-p", Fgeneric_specifier_p, 1, 1, 0, /* | |
| 3654 Return non-nil if OBJECT is a generic specifier. | |
| 3655 | |
| 442 | 3656 See `make-generic-specifier' for a description of possible generic |
| 3657 instantiators. | |
| 428 | 3658 */ |
| 3659 (object)) | |
| 3660 { | |
| 3661 return GENERIC_SPECIFIERP (object) ? Qt : Qnil; | |
| 3662 } | |
| 3663 | |
| 3664 | |
| 3665 /************************************************************************/ | |
| 3666 /* Integer specifier type */ | |
| 3667 /************************************************************************/ | |
| 3668 | |
| 3669 DEFINE_SPECIFIER_TYPE (integer); | |
| 3670 | |
| 3671 static void | |
| 3672 integer_validate (Lisp_Object instantiator) | |
| 3673 { | |
| 3674 CHECK_INT (instantiator); | |
| 3675 } | |
| 3676 | |
| 3677 DEFUN ("integer-specifier-p", Finteger_specifier_p, 1, 1, 0, /* | |
| 3678 Return non-nil if OBJECT is an integer specifier. | |
| 442 | 3679 |
| 3680 See `make-integer-specifier' for a description of possible integer | |
| 3681 instantiators. | |
| 428 | 3682 */ |
| 3683 (object)) | |
| 3684 { | |
| 3685 return INTEGER_SPECIFIERP (object) ? Qt : Qnil; | |
| 3686 } | |
| 3687 | |
| 3688 /************************************************************************/ | |
| 3689 /* Non-negative-integer specifier type */ | |
| 3690 /************************************************************************/ | |
| 3691 | |
| 3692 DEFINE_SPECIFIER_TYPE (natnum); | |
| 3693 | |
| 3694 static void | |
| 3695 natnum_validate (Lisp_Object instantiator) | |
| 3696 { | |
| 3697 CHECK_NATNUM (instantiator); | |
| 3698 } | |
| 3699 | |
| 3700 DEFUN ("natnum-specifier-p", Fnatnum_specifier_p, 1, 1, 0, /* | |
| 3701 Return non-nil if OBJECT is a natnum (non-negative-integer) specifier. | |
| 442 | 3702 |
| 3703 See `make-natnum-specifier' for a description of possible natnum | |
| 3704 instantiators. | |
| 428 | 3705 */ |
| 3706 (object)) | |
| 3707 { | |
| 3708 return NATNUM_SPECIFIERP (object) ? Qt : Qnil; | |
| 3709 } | |
| 3710 | |
| 3711 /************************************************************************/ | |
| 3712 /* Boolean specifier type */ | |
| 3713 /************************************************************************/ | |
| 3714 | |
| 3715 DEFINE_SPECIFIER_TYPE (boolean); | |
| 3716 | |
| 3717 static void | |
| 3718 boolean_validate (Lisp_Object instantiator) | |
| 3719 { | |
| 3720 if (!EQ (instantiator, Qt) && !EQ (instantiator, Qnil)) | |
| 563 | 3721 invalid_constant ("Must be t or nil", instantiator); |
| 428 | 3722 } |
| 3723 | |
| 3724 DEFUN ("boolean-specifier-p", Fboolean_specifier_p, 1, 1, 0, /* | |
| 3725 Return non-nil if OBJECT is a boolean specifier. | |
| 442 | 3726 |
| 3727 See `make-boolean-specifier' for a description of possible boolean | |
| 3728 instantiators. | |
| 428 | 3729 */ |
| 3730 (object)) | |
| 3731 { | |
| 3732 return BOOLEAN_SPECIFIERP (object) ? Qt : Qnil; | |
| 3733 } | |
| 3734 | |
| 3735 /************************************************************************/ | |
| 3736 /* Display table specifier type */ | |
| 3737 /************************************************************************/ | |
| 3738 | |
| 3739 DEFINE_SPECIFIER_TYPE (display_table); | |
| 3740 | |
| 3659 | 3741 #define VALID_SINGLE_DISPTABLE_INSTANTIATOR_P(instantiator) \ |
| 3742 (VECTORP (instantiator) \ | |
| 3743 || (CHAR_TABLEP (instantiator) \ | |
| 3744 && (XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_CHAR \ | |
| 442 | 3745 || XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_GENERIC)) \ |
| 428 | 3746 || RANGE_TABLEP (instantiator)) |
| 3747 | |
| 3748 static void | |
| 3749 display_table_validate (Lisp_Object instantiator) | |
| 3750 { | |
| 3751 if (NILP (instantiator)) | |
| 3752 /* OK */ | |
| 3753 ; | |
| 3754 else if (CONSP (instantiator)) | |
| 3755 { | |
| 2367 | 3756 EXTERNAL_LIST_LOOP_2 (car, instantiator) |
| 428 | 3757 { |
| 3758 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (car)) | |
| 3759 goto lose; | |
| 3760 } | |
| 3761 } | |
| 3762 else | |
| 3763 { | |
| 3764 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (instantiator)) | |
| 3765 { | |
| 3766 lose: | |
| 442 | 3767 dead_wrong_type_argument |
| 3768 (display_table_specifier_methods->predicate_symbol, | |
| 3659 | 3769 instantiator); |
| 428 | 3770 } |
| 3771 } | |
| 3772 } | |
| 3773 | |
| 3774 DEFUN ("display-table-specifier-p", Fdisplay_table_specifier_p, 1, 1, 0, /* | |
| 3775 Return non-nil if OBJECT is a display-table specifier. | |
| 442 | 3776 |
| 3777 See `current-display-table' for a description of possible display-table | |
| 3778 instantiators. | |
| 428 | 3779 */ |
| 3780 (object)) | |
| 3781 { | |
| 3782 return DISPLAYTABLE_SPECIFIERP (object) ? Qt : Qnil; | |
| 3783 } | |
| 3784 | |
| 3785 | |
| 3786 /************************************************************************/ | |
| 3787 /* Initialization */ | |
| 3788 /************************************************************************/ | |
| 3789 | |
| 3790 void | |
| 3791 syms_of_specifier (void) | |
| 3792 { | |
| 442 | 3793 INIT_LRECORD_IMPLEMENTATION (specifier); |
| 3092 | 3794 #ifdef NEW_GC |
| 3795 INIT_LRECORD_IMPLEMENTATION (specifier_caching); | |
| 3796 #endif /* NEW_GC */ | |
| 442 | 3797 |
| 3798 DEFSYMBOL (Qspecifierp); | |
| 3799 | |
| 3800 DEFSYMBOL (Qconsole_type); | |
| 3801 DEFSYMBOL (Qdevice_class); | |
| 3802 | |
| 3803 /* specifier types defined in general.c. */ | |
| 428 | 3804 |
| 3805 DEFSUBR (Fvalid_specifier_type_p); | |
| 3806 DEFSUBR (Fspecifier_type_list); | |
| 3807 DEFSUBR (Fmake_specifier); | |
| 3808 DEFSUBR (Fspecifierp); | |
| 3809 DEFSUBR (Fspecifier_type); | |
| 3810 | |
| 3811 DEFSUBR (Fvalid_specifier_locale_p); | |
| 3812 DEFSUBR (Fvalid_specifier_domain_p); | |
| 3813 DEFSUBR (Fvalid_specifier_locale_type_p); | |
| 3814 DEFSUBR (Fspecifier_locale_type_from_locale); | |
| 3815 | |
| 3816 DEFSUBR (Fvalid_specifier_tag_p); | |
| 3817 DEFSUBR (Fvalid_specifier_tag_set_p); | |
| 3818 DEFSUBR (Fcanonicalize_tag_set); | |
| 3819 DEFSUBR (Fdevice_matches_specifier_tag_set_p); | |
| 3820 DEFSUBR (Fdefine_specifier_tag); | |
| 3821 DEFSUBR (Fdevice_matching_specifier_tag_list); | |
| 3673 | 3822 |
| 428 | 3823 DEFSUBR (Fspecifier_tag_list); |
| 3659 | 3824 DEFSUBR (Fspecifier_tag_device_predicate); |
| 3825 DEFSUBR (Fspecifier_tag_charset_predicate); | |
| 428 | 3826 |
| 3827 DEFSUBR (Fcheck_valid_instantiator); | |
| 3828 DEFSUBR (Fvalid_instantiator_p); | |
| 3829 DEFSUBR (Fcheck_valid_inst_list); | |
| 3830 DEFSUBR (Fvalid_inst_list_p); | |
| 3831 DEFSUBR (Fcheck_valid_spec_list); | |
| 3832 DEFSUBR (Fvalid_spec_list_p); | |
| 3833 DEFSUBR (Fadd_spec_to_specifier); | |
| 3834 DEFSUBR (Fadd_spec_list_to_specifier); | |
| 3835 DEFSUBR (Fspecifier_spec_list); | |
| 3836 DEFSUBR (Fspecifier_specs); | |
| 3837 DEFSUBR (Fremove_specifier); | |
| 3838 DEFSUBR (Fcopy_specifier); | |
| 3839 | |
| 3840 DEFSUBR (Fcheck_valid_specifier_matchspec); | |
| 3841 DEFSUBR (Fvalid_specifier_matchspec_p); | |
| 3842 DEFSUBR (Fspecifier_fallback); | |
| 3843 DEFSUBR (Fspecifier_instance); | |
| 2953 | 3844 DEFSUBR (Fspecifier_instantiator); |
| 428 | 3845 DEFSUBR (Fspecifier_matching_instance); |
| 2953 | 3846 DEFSUBR (Fspecifier_matching_instantiator); |
| 428 | 3847 DEFSUBR (Fspecifier_instance_from_inst_list); |
| 2953 | 3848 DEFSUBR (Fspecifier_instantiator_from_inst_list); |
| 428 | 3849 DEFSUBR (Fspecifier_matching_instance_from_inst_list); |
| 2953 | 3850 DEFSUBR (Fspecifier_matching_instantiator_from_inst_list); |
| 428 | 3851 DEFSUBR (Fset_specifier_dirty_flag); |
| 3852 | |
| 3853 DEFSUBR (Fgeneric_specifier_p); | |
| 3854 DEFSUBR (Finteger_specifier_p); | |
| 3855 DEFSUBR (Fnatnum_specifier_p); | |
| 3856 DEFSUBR (Fboolean_specifier_p); | |
| 3857 DEFSUBR (Fdisplay_table_specifier_p); | |
| 3858 | |
| 3859 /* Symbols pertaining to specifier creation. Specifiers are created | |
| 3860 in the syms_of() functions. */ | |
| 3861 | |
| 3862 /* locales are defined in general.c. */ | |
| 3863 | |
| 442 | 3864 /* some how-to-add flags in general.c. */ |
| 3865 DEFSYMBOL (Qremove_tag_set_prepend); | |
| 3866 DEFSYMBOL (Qremove_tag_set_append); | |
| 3867 DEFSYMBOL (Qremove_locale); | |
| 3868 DEFSYMBOL (Qremove_locale_type); | |
| 428 | 3869 } |
| 3870 | |
| 3871 void | |
| 3872 specifier_type_create (void) | |
| 3873 { | |
| 3874 the_specifier_type_entry_dynarr = Dynarr_new (specifier_type_entry); | |
| 2367 | 3875 dump_add_root_block_ptr (&the_specifier_type_entry_dynarr, &sted_description); |
| 428 | 3876 |
| 3877 Vspecifier_type_list = Qnil; | |
| 3878 staticpro (&Vspecifier_type_list); | |
| 3879 | |
| 3880 INITIALIZE_SPECIFIER_TYPE (generic, "generic", "generic-specifier-p"); | |
| 3881 | |
| 3882 INITIALIZE_SPECIFIER_TYPE (integer, "integer", "integer-specifier-p"); | |
| 3883 | |
| 3884 SPECIFIER_HAS_METHOD (integer, validate); | |
| 3885 | |
| 3886 INITIALIZE_SPECIFIER_TYPE (natnum, "natnum", "natnum-specifier-p"); | |
| 3887 | |
| 3888 SPECIFIER_HAS_METHOD (natnum, validate); | |
| 3889 | |
| 3890 INITIALIZE_SPECIFIER_TYPE (boolean, "boolean", "boolean-specifier-p"); | |
| 3891 | |
| 3892 SPECIFIER_HAS_METHOD (boolean, validate); | |
| 3893 | |
| 442 | 3894 INITIALIZE_SPECIFIER_TYPE (display_table, "display-table", |
| 3895 "display-table-p"); | |
| 428 | 3896 |
| 3897 SPECIFIER_HAS_METHOD (display_table, validate); | |
| 3898 } | |
| 3899 | |
| 3900 void | |
| 3901 reinit_specifier_type_create (void) | |
| 3902 { | |
| 3903 REINITIALIZE_SPECIFIER_TYPE (generic); | |
| 3904 REINITIALIZE_SPECIFIER_TYPE (integer); | |
| 3905 REINITIALIZE_SPECIFIER_TYPE (natnum); | |
| 3906 REINITIALIZE_SPECIFIER_TYPE (boolean); | |
| 3907 REINITIALIZE_SPECIFIER_TYPE (display_table); | |
| 3908 } | |
| 3909 | |
| 3910 void | |
| 3911 vars_of_specifier (void) | |
| 3912 { | |
| 3913 Vcached_specifiers = Qnil; | |
| 3914 staticpro (&Vcached_specifiers); | |
| 3915 | |
| 3916 /* Do NOT mark through this, or specifiers will never be GC'd. | |
| 3917 This is the same deal as for weak hash tables. */ | |
| 3918 Vall_specifiers = Qnil; | |
| 452 | 3919 dump_add_weak_object_chain (&Vall_specifiers); |
| 428 | 3920 |
| 3921 Vuser_defined_tags = Qnil; | |
| 3922 staticpro (&Vuser_defined_tags); | |
| 3923 | |
| 3924 Vunlock_ghost_specifiers = Qnil; | |
| 3925 staticpro (&Vunlock_ghost_specifiers); | |
| 3659 | 3926 |
| 3927 Vcharset_tag_lists = make_vector(NUM_LEADING_BYTES, Qnil); | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3928 staticpro (&Vcharset_tag_lists); |
| 428 | 3929 } |