Mercurial > hg > xemacs-beta
annotate src/specifier.c @ 5088:207dad9e74f7
Signal an error upon reading 1/0.
Thanks to Ben Wing for finding the problem. See xemacs-patches message with ID
<870180fe1003021239k77d81203xb7b6f94ce83208b3@mail.gmail.com> and also
<d7ba68911002240223u36bb87c2nf4ccfde06b5519cc@mail.gmail.com> in xemacs-beta.
| author | Jerry James <james@xemacs.org> |
|---|---|
| date | Tue, 02 Mar 2010 13:42:37 -0700 |
| parents | 2ade80e8c640 |
| children | b5df3737028a |
| rev | line source |
|---|---|
| 428 | 1 /* Specifier implementation |
| 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
|
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3 Copyright (C) 1995, 1996, 2002, 2005, 2010 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" |
|
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36 #include "elhash.h" |
| 428 | 37 #include "frame.h" |
| 800 | 38 #include "glyphs.h" |
| 428 | 39 #include "opaque.h" |
| 800 | 40 #include "rangetab.h" |
| 428 | 41 #include "specifier.h" |
| 42 #include "window.h" | |
| 43 | |
| 44 Lisp_Object Qspecifierp; | |
| 442 | 45 Lisp_Object Qremove_tag_set_prepend, Qremove_tag_set_append; |
| 46 Lisp_Object Qremove_locale, Qremove_locale_type; | |
| 428 | 47 |
| 48 Lisp_Object Qconsole_type, Qdevice_class; | |
| 49 | |
| 50 static Lisp_Object Vuser_defined_tags; | |
|
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51 /* This is a hash table mapping charsets to "tag lists". A tag list here |
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52 is an assoc list mapping charset tags to size-two vectors (one for the |
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53 initial stage, one for the final stage) containing t or nil, indicating |
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54 whether the charset tag matches the charset for the given stage. These |
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55 values are determined at the time a charset tag is defined by calling |
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56 the charset predicate on all the existing charsets, and at the time a |
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57 charset is defined by calling the predicate on all existing charset |
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58 tags. */ |
| 3659 | 59 static Lisp_Object Vcharset_tag_lists; |
| 428 | 60 |
| 61 typedef struct specifier_type_entry specifier_type_entry; | |
| 62 struct specifier_type_entry | |
| 63 { | |
| 64 Lisp_Object symbol; | |
| 65 struct specifier_methods *meths; | |
| 66 }; | |
| 67 | |
| 68 typedef struct | |
| 69 { | |
| 70 Dynarr_declare (specifier_type_entry); | |
| 71 } specifier_type_entry_dynarr; | |
| 72 | |
| 73 static specifier_type_entry_dynarr *the_specifier_type_entry_dynarr; | |
| 74 | |
| 1204 | 75 static const struct memory_description ste_description_1[] = { |
| 440 | 76 { XD_LISP_OBJECT, offsetof (specifier_type_entry, symbol) }, |
| 2367 | 77 { XD_BLOCK_PTR, offsetof (specifier_type_entry, meths), 1, |
| 2551 | 78 { &specifier_methods_description } }, |
| 428 | 79 { XD_END } |
| 80 }; | |
| 81 | |
| 1204 | 82 static const struct sized_memory_description ste_description = { |
| 440 | 83 sizeof (specifier_type_entry), |
| 428 | 84 ste_description_1 |
| 85 }; | |
| 86 | |
| 1204 | 87 static const struct memory_description sted_description_1[] = { |
| 440 | 88 XD_DYNARR_DESC (specifier_type_entry_dynarr, &ste_description), |
| 428 | 89 { XD_END } |
| 90 }; | |
| 91 | |
| 1204 | 92 static const struct sized_memory_description sted_description = { |
| 440 | 93 sizeof (specifier_type_entry_dynarr), |
| 428 | 94 sted_description_1 |
| 95 }; | |
| 96 | |
| 97 static Lisp_Object Vspecifier_type_list; | |
| 98 | |
| 99 static Lisp_Object Vcached_specifiers; | |
| 100 /* Do NOT mark through this, or specifiers will never be GC'd. */ | |
| 101 static Lisp_Object Vall_specifiers; | |
| 102 | |
| 103 static Lisp_Object Vunlock_ghost_specifiers; | |
| 104 | |
| 105 /* #### The purpose of this is to check for inheritance loops | |
| 106 in specifiers that can inherit from other specifiers, but it's | |
| 107 not yet implemented. | |
| 108 | |
| 109 #### Look into this for 19.14. */ | |
| 110 /* static Lisp_Object_dynarr current_specifiers; */ | |
| 111 | |
| 112 static void recompute_cached_specifier_everywhere (Lisp_Object specifier); | |
| 113 | |
| 114 EXFUN (Fspecifier_specs, 4); | |
| 115 EXFUN (Fremove_specifier, 4); | |
| 116 | |
| 117 | |
| 118 /************************************************************************/ | |
| 119 /* Specifier object methods */ | |
| 120 /************************************************************************/ | |
| 121 | |
| 122 /* Remove dead objects from the specified assoc list. */ | |
| 123 | |
| 124 static Lisp_Object | |
| 125 cleanup_assoc_list (Lisp_Object list) | |
| 126 { | |
| 127 Lisp_Object loop, prev, retval; | |
| 128 | |
| 129 loop = retval = list; | |
| 130 prev = Qnil; | |
| 131 | |
| 132 while (!NILP (loop)) | |
| 133 { | |
| 134 Lisp_Object entry = XCAR (loop); | |
| 135 Lisp_Object key = XCAR (entry); | |
| 136 | |
| 137 /* remember, dead windows can become alive again. */ | |
| 138 if (!WINDOWP (key) && object_dead_p (key)) | |
| 139 { | |
| 140 if (NILP (prev)) | |
| 141 { | |
| 142 /* Removing the head. */ | |
| 143 retval = XCDR (retval); | |
| 144 } | |
| 145 else | |
| 146 { | |
| 147 Fsetcdr (prev, XCDR (loop)); | |
| 148 } | |
| 149 } | |
| 150 else | |
| 151 prev = loop; | |
| 152 | |
| 153 loop = XCDR (loop); | |
| 154 } | |
| 155 | |
| 156 return retval; | |
| 157 } | |
| 158 | |
| 159 /* Remove dead objects from the various lists so that they | |
| 160 don't keep getting marked as long as this specifier exists and | |
| 161 therefore wasting memory. */ | |
| 162 | |
| 163 void | |
| 164 cleanup_specifiers (void) | |
| 165 { | |
| 166 Lisp_Object rest; | |
| 167 | |
| 168 for (rest = Vall_specifiers; | |
| 169 !NILP (rest); | |
| 170 rest = XSPECIFIER (rest)->next_specifier) | |
| 171 { | |
| 440 | 172 Lisp_Specifier *sp = XSPECIFIER (rest); |
| 428 | 173 /* This effectively changes the specifier specs. |
| 174 However, there's no need to call | |
| 175 recompute_cached_specifier_everywhere() or the | |
| 176 after-change methods because the only specs we | |
| 177 are removing are for dead objects, and they can | |
| 178 never have any effect on the specifier values: | |
| 179 specifiers can only be instantiated over live | |
| 180 objects, and you can't derive a dead object | |
| 181 from a live one. */ | |
| 182 sp->device_specs = cleanup_assoc_list (sp->device_specs); | |
| 183 sp->frame_specs = cleanup_assoc_list (sp->frame_specs); | |
| 184 sp->buffer_specs = cleanup_assoc_list (sp->buffer_specs); | |
| 185 /* windows are handled specially because dead windows | |
| 186 can be resurrected */ | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 void | |
| 191 kill_specifier_buffer_locals (Lisp_Object buffer) | |
| 192 { | |
| 193 Lisp_Object rest; | |
| 194 | |
| 195 for (rest = Vall_specifiers; | |
| 196 !NILP (rest); | |
| 197 rest = XSPECIFIER (rest)->next_specifier) | |
| 198 { | |
| 440 | 199 Lisp_Specifier *sp = XSPECIFIER (rest); |
| 428 | 200 |
| 201 /* Make sure we're actually going to be changing something. | |
| 202 Fremove_specifier() always calls | |
| 203 recompute_cached_specifier_everywhere() (#### but should | |
| 204 be smarter about this). */ | |
| 205 if (!NILP (assq_no_quit (buffer, sp->buffer_specs))) | |
| 206 Fremove_specifier (rest, buffer, Qnil, Qnil); | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 static Lisp_Object | |
| 211 mark_specifier (Lisp_Object obj) | |
| 212 { | |
| 440 | 213 Lisp_Specifier *specifier = XSPECIFIER (obj); |
| 428 | 214 |
| 215 mark_object (specifier->global_specs); | |
| 216 mark_object (specifier->device_specs); | |
| 217 mark_object (specifier->frame_specs); | |
| 218 mark_object (specifier->window_specs); | |
| 219 mark_object (specifier->buffer_specs); | |
| 220 mark_object (specifier->magic_parent); | |
| 221 mark_object (specifier->fallback); | |
| 222 if (!GHOST_SPECIFIER_P (XSPECIFIER (obj))) | |
| 223 MAYBE_SPECMETH (specifier, mark, (obj)); | |
| 224 return Qnil; | |
| 225 } | |
| 226 | |
| 227 /* The idea here is that the specifier specs point to locales | |
| 228 (windows, buffers, frames, and devices), and we want to make sure | |
| 229 that the specs disappear automatically when the associated locale | |
| 230 is no longer in use. For all but windows, "no longer in use" | |
| 231 corresponds exactly to when the object is deleted (non-deleted | |
| 232 objects are always held permanently in special lists, and deleted | |
| 233 objects are never on these lists and never reusable). To handle | |
| 234 this, we just have cleanup_specifiers() called periodically | |
| 235 (at the beginning of garbage collection); it removes all dead | |
| 236 objects. | |
| 237 | |
| 238 For windows, however, it's trickier because dead objects can be | |
| 239 converted to live ones again if the dead object is in a window | |
| 240 configuration. Therefore, for windows, "no longer in use" | |
| 241 corresponds to when the window object is garbage-collected. | |
| 242 We now use weak lists for this purpose. | |
| 243 | |
| 244 */ | |
| 245 | |
| 246 void | |
| 247 prune_specifiers (void) | |
| 248 { | |
| 249 Lisp_Object rest, prev = Qnil; | |
| 250 | |
| 251 for (rest = Vall_specifiers; | |
| 252 !NILP (rest); | |
| 253 rest = XSPECIFIER (rest)->next_specifier) | |
| 254 { | |
| 255 if (! marked_p (rest)) | |
| 256 { | |
| 440 | 257 Lisp_Specifier* sp = XSPECIFIER (rest); |
| 428 | 258 /* A bit of assertion that we're removing both parts of the |
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259 magic one altogether */ |
| 428 | 260 assert (!MAGIC_SPECIFIER_P(sp) |
| 261 || (BODILY_SPECIFIER_P(sp) && marked_p (sp->fallback)) | |
| 262 || (GHOST_SPECIFIER_P(sp) && marked_p (sp->magic_parent))); | |
| 263 /* This specifier is garbage. Remove it from the list. */ | |
| 264 if (NILP (prev)) | |
| 265 Vall_specifiers = sp->next_specifier; | |
| 266 else | |
| 267 XSPECIFIER (prev)->next_specifier = sp->next_specifier; | |
| 268 } | |
| 269 else | |
| 270 prev = rest; | |
| 271 } | |
| 272 } | |
| 273 | |
| 274 static void | |
| 2286 | 275 print_specifier (Lisp_Object obj, Lisp_Object printcharfun, |
| 276 int UNUSED (escapeflag)) | |
| 428 | 277 { |
| 440 | 278 Lisp_Specifier *sp = XSPECIFIER (obj); |
| 428 | 279 int count = specpdl_depth (); |
| 280 Lisp_Object the_specs; | |
| 281 | |
| 282 if (print_readably) | |
| 563 | 283 printing_unreadable_object ("#<%s-specifier 0x%x>", |
| 284 sp->methods->name, sp->header.uid); | |
| 428 | 285 |
| 800 | 286 write_fmt_string (printcharfun, "#<%s-specifier global=", sp->methods->name); |
| 872 | 287 #if 0 |
| 288 /* #### Not obvious this is useful, and overrides user settings; if we | |
| 289 resurrect this, create variables like `print-specifier-length' so it | |
| 290 can be controlled. */ | |
| 428 | 291 specbind (Qprint_string_length, make_int (100)); |
| 292 specbind (Qprint_length, make_int (5)); | |
| 872 | 293 #endif |
| 428 | 294 the_specs = Fspecifier_specs (obj, Qglobal, Qnil, Qnil); |
| 295 if (NILP (the_specs)) | |
| 296 /* there are no global specs */ | |
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297 write_ascstring (printcharfun, "<unspecified>"); |
| 428 | 298 else |
| 299 print_internal (the_specs, printcharfun, 1); | |
| 300 if (!NILP (sp->fallback)) | |
| 301 { | |
| 800 | 302 write_fmt_string_lisp (printcharfun, " fallback=%S", 1, sp->fallback); |
| 428 | 303 } |
| 771 | 304 unbind_to (count); |
| 800 | 305 write_fmt_string (printcharfun, " 0x%x>", sp->header.uid); |
| 428 | 306 } |
| 307 | |
| 3263 | 308 #ifndef NEW_GC |
| 428 | 309 static void |
| 310 finalize_specifier (void *header, int for_disksave) | |
| 311 { | |
| 440 | 312 Lisp_Specifier *sp = (Lisp_Specifier *) header; |
| 428 | 313 /* don't be snafued by the disksave finalization. */ |
| 314 if (!for_disksave && !GHOST_SPECIFIER_P(sp) && sp->caching) | |
| 315 { | |
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316 xfree (sp->caching); |
| 428 | 317 sp->caching = 0; |
| 318 } | |
| 319 } | |
| 3263 | 320 #endif /* not NEW_GC */ |
| 428 | 321 |
| 322 static int | |
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323 specifier_equal (Lisp_Object obj1, Lisp_Object obj2, int depth, int foldcase) |
| 428 | 324 { |
| 440 | 325 Lisp_Specifier *s1 = XSPECIFIER (obj1); |
| 326 Lisp_Specifier *s2 = XSPECIFIER (obj2); | |
| 428 | 327 int retval; |
| 328 Lisp_Object old_inhibit_quit = Vinhibit_quit; | |
| 329 | |
| 330 /* This function can be called from within redisplay. | |
| 331 internal_equal can trigger a quit. That leads to Bad Things. */ | |
| 332 Vinhibit_quit = Qt; | |
| 333 | |
| 334 depth++; | |
| 335 retval = | |
| 336 (s1->methods == s2->methods && | |
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337 internal_equal_0 (s1->global_specs, s2->global_specs, depth, foldcase) && |
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338 internal_equal_0 (s1->device_specs, s2->device_specs, depth, foldcase) && |
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339 internal_equal_0 (s1->frame_specs, s2->frame_specs, depth, foldcase) && |
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340 internal_equal_0 (s1->window_specs, s2->window_specs, depth, foldcase) && |
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341 internal_equal_0 (s1->buffer_specs, s2->buffer_specs, depth, foldcase) && |
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342 internal_equal_0 (s1->fallback, s2->fallback, depth, foldcase)); |
| 428 | 343 |
| 344 if (retval && HAS_SPECMETH_P (s1, equal)) | |
| 345 retval = SPECMETH (s1, equal, (obj1, obj2, depth - 1)); | |
| 346 | |
| 347 Vinhibit_quit = old_inhibit_quit; | |
| 348 return retval; | |
| 349 } | |
| 350 | |
| 2515 | 351 static Hashcode |
| 428 | 352 specifier_hash (Lisp_Object obj, int depth) |
| 353 { | |
| 440 | 354 Lisp_Specifier *s = XSPECIFIER (obj); |
| 428 | 355 |
| 356 /* specifier hashing is a bit problematic because there are so | |
| 357 many places where data can be stored. We pick what are perhaps | |
| 358 the most likely places where interesting stuff will be. */ | |
| 359 return HASH5 ((HAS_SPECMETH_P (s, hash) ? | |
| 360 SPECMETH (s, hash, (obj, depth)) : 0), | |
| 2515 | 361 (Hashcode) s->methods, |
| 428 | 362 internal_hash (s->global_specs, depth + 1), |
| 363 internal_hash (s->frame_specs, depth + 1), | |
| 364 internal_hash (s->buffer_specs, depth + 1)); | |
| 365 } | |
| 366 | |
| 665 | 367 inline static Bytecount |
| 368 aligned_sizeof_specifier (Bytecount specifier_type_specific_size) | |
| 456 | 369 { |
| 826 | 370 return MAX_ALIGN_SIZE (offsetof (Lisp_Specifier, data) |
| 371 + specifier_type_specific_size); | |
| 456 | 372 } |
| 373 | |
| 665 | 374 static Bytecount |
| 442 | 375 sizeof_specifier (const void *header) |
| 428 | 376 { |
| 456 | 377 const Lisp_Specifier *p = (const Lisp_Specifier *) header; |
| 378 return aligned_sizeof_specifier (GHOST_SPECIFIER_P (p) | |
| 379 ? 0 | |
| 380 : p->methods->extra_data_size); | |
| 428 | 381 } |
| 382 | |
| 1204 | 383 static const struct memory_description specifier_methods_description_1[] = { |
| 440 | 384 { XD_LISP_OBJECT, offsetof (struct specifier_methods, predicate_symbol) }, |
| 428 | 385 { XD_END } |
| 386 }; | |
| 387 | |
| 1204 | 388 const struct sized_memory_description specifier_methods_description = { |
| 440 | 389 sizeof (struct specifier_methods), |
| 428 | 390 specifier_methods_description_1 |
| 391 }; | |
| 392 | |
| 1204 | 393 static const struct memory_description specifier_caching_description_1[] = { |
| 428 | 394 { XD_END } |
| 395 }; | |
| 396 | |
| 3092 | 397 #ifdef NEW_GC |
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398 DEFINE_LRECORD_IMPLEMENTATION ("specifier-caching", |
| 3092 | 399 specifier_caching, |
| 400 1, /*dumpable-flag*/ | |
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401 0, 0, 0, 0, 0, |
| 3092 | 402 specifier_caching_description_1, |
| 403 struct specifier_caching); | |
| 404 #else /* not NEW_GC */ | |
| 1204 | 405 static const struct sized_memory_description specifier_caching_description = { |
| 440 | 406 sizeof (struct specifier_caching), |
| 428 | 407 specifier_caching_description_1 |
| 408 }; | |
| 3092 | 409 #endif /* not NEW_GC */ |
| 428 | 410 |
| 1204 | 411 static const struct sized_memory_description specifier_extra_description_map[] |
| 412 = { | |
| 413 { offsetof (Lisp_Specifier, methods) }, | |
| 414 { offsetof (struct specifier_methods, extra_description) }, | |
| 415 { -1 }, | |
| 416 }; | |
| 417 | |
| 418 const struct memory_description specifier_description[] = { | |
| 2367 | 419 { XD_BLOCK_PTR, offsetof (Lisp_Specifier, methods), 1, |
| 2551 | 420 { &specifier_methods_description } }, |
| 440 | 421 { XD_LO_LINK, offsetof (Lisp_Specifier, next_specifier) }, |
| 422 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, global_specs) }, | |
| 423 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, device_specs) }, | |
| 424 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, frame_specs) }, | |
| 425 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, window_specs) }, | |
| 426 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, buffer_specs) }, | |
| 3092 | 427 #ifdef NEW_GC |
| 428 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, caching) }, | |
| 429 #else /* not NEW_GC */ | |
| 2367 | 430 { XD_BLOCK_PTR, offsetof (Lisp_Specifier, caching), 1, |
| 2551 | 431 { &specifier_caching_description } }, |
| 3092 | 432 #endif /* not NEW_GC */ |
| 440 | 433 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, magic_parent) }, |
| 434 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, fallback) }, | |
| 2367 | 435 { XD_BLOCK_ARRAY, offsetof (Lisp_Specifier, data), 1, |
| 2551 | 436 { specifier_extra_description_map } }, |
| 428 | 437 { XD_END } |
| 438 }; | |
| 439 | |
| 1204 | 440 static const struct memory_description specifier_empty_extra_description_1[] = |
| 3659 | 441 { |
| 442 { XD_END } | |
| 443 }; | |
| 1204 | 444 |
| 445 const struct sized_memory_description specifier_empty_extra_description = { | |
| 446 0, specifier_empty_extra_description_1 | |
| 447 }; | |
| 448 | |
| 3263 | 449 #ifdef NEW_GC |
| 450 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("specifier", specifier, | |
| 451 1, /*dumpable-flag*/ | |
| 452 mark_specifier, print_specifier, | |
| 453 0, specifier_equal, specifier_hash, | |
| 454 specifier_description, | |
| 455 sizeof_specifier, | |
| 456 Lisp_Specifier); | |
| 457 #else /* not NEW_GC */ | |
| 934 | 458 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("specifier", specifier, |
| 459 1, /*dumpable-flag*/ | |
| 460 mark_specifier, print_specifier, | |
| 461 finalize_specifier, | |
| 462 specifier_equal, specifier_hash, | |
| 463 specifier_description, | |
| 464 sizeof_specifier, | |
| 465 Lisp_Specifier); | |
| 3263 | 466 #endif /* not NEW_GC */ |
| 428 | 467 |
| 468 /************************************************************************/ | |
| 469 /* Creating specifiers */ | |
| 470 /************************************************************************/ | |
| 471 | |
| 472 static struct specifier_methods * | |
| 578 | 473 decode_specifier_type (Lisp_Object type, Error_Behavior errb) |
| 428 | 474 { |
| 475 int i; | |
| 476 | |
| 477 for (i = 0; i < Dynarr_length (the_specifier_type_entry_dynarr); i++) | |
| 478 { | |
| 479 if (EQ (type, Dynarr_at (the_specifier_type_entry_dynarr, i).symbol)) | |
| 480 return Dynarr_at (the_specifier_type_entry_dynarr, i).meths; | |
| 481 } | |
| 482 | |
| 563 | 483 maybe_invalid_argument ("Invalid specifier type", |
| 3659 | 484 type, Qspecifier, errb); |
| 428 | 485 |
| 486 return 0; | |
| 487 } | |
| 488 | |
| 489 static int | |
| 490 valid_specifier_type_p (Lisp_Object type) | |
| 491 { | |
| 492 return decode_specifier_type (type, ERROR_ME_NOT) != 0; | |
| 493 } | |
| 494 | |
| 495 DEFUN ("valid-specifier-type-p", Fvalid_specifier_type_p, 1, 1, 0, /* | |
| 496 Given a SPECIFIER-TYPE, return non-nil if it is valid. | |
| 2953 | 497 Valid types are `generic', `integer', `boolean', `color', `font', `image', |
| 498 `face-boolean', and `toolbar'. | |
| 428 | 499 */ |
| 500 (specifier_type)) | |
| 501 { | |
| 502 return valid_specifier_type_p (specifier_type) ? Qt : Qnil; | |
| 503 } | |
| 504 | |
| 505 DEFUN ("specifier-type-list", Fspecifier_type_list, 0, 0, 0, /* | |
| 506 Return a list of valid specifier types. | |
| 507 */ | |
| 508 ()) | |
| 509 { | |
| 510 return Fcopy_sequence (Vspecifier_type_list); | |
| 511 } | |
| 512 | |
| 513 void | |
| 514 add_entry_to_specifier_type_list (Lisp_Object symbol, | |
| 515 struct specifier_methods *meths) | |
| 516 { | |
| 517 struct specifier_type_entry entry; | |
| 518 | |
| 519 entry.symbol = symbol; | |
| 520 entry.meths = meths; | |
| 521 Dynarr_add (the_specifier_type_entry_dynarr, entry); | |
| 522 Vspecifier_type_list = Fcons (symbol, Vspecifier_type_list); | |
| 523 } | |
| 524 | |
| 525 static Lisp_Object | |
| 526 make_specifier_internal (struct specifier_methods *spec_meths, | |
| 665 | 527 Bytecount data_size, int call_create_meth) |
| 428 | 528 { |
| 529 Lisp_Object specifier; | |
| 440 | 530 Lisp_Specifier *sp = (Lisp_Specifier *) |
| 3017 | 531 BASIC_ALLOC_LCRECORD (aligned_sizeof_specifier (data_size), |
| 1204 | 532 &lrecord_specifier); |
| 428 | 533 |
| 534 sp->methods = spec_meths; | |
| 535 sp->global_specs = Qnil; | |
| 536 sp->device_specs = Qnil; | |
| 537 sp->frame_specs = Qnil; | |
| 538 sp->window_specs = make_weak_list (WEAK_LIST_KEY_ASSOC); | |
| 539 sp->buffer_specs = Qnil; | |
| 540 sp->fallback = Qnil; | |
| 541 sp->magic_parent = Qnil; | |
| 542 sp->caching = 0; | |
| 543 sp->next_specifier = Vall_specifiers; | |
| 544 | |
| 793 | 545 specifier = wrap_specifier (sp); |
| 428 | 546 Vall_specifiers = specifier; |
| 547 | |
| 548 if (call_create_meth) | |
| 549 { | |
| 550 struct gcpro gcpro1; | |
| 551 GCPRO1 (specifier); | |
| 552 MAYBE_SPECMETH (XSPECIFIER (specifier), create, (specifier)); | |
| 553 UNGCPRO; | |
| 554 } | |
| 555 return specifier; | |
| 556 } | |
| 557 | |
| 558 static Lisp_Object | |
| 559 make_specifier (struct specifier_methods *meths) | |
| 560 { | |
| 561 return make_specifier_internal (meths, meths->extra_data_size, 1); | |
| 562 } | |
| 563 | |
| 564 Lisp_Object | |
| 565 make_magic_specifier (Lisp_Object type) | |
| 566 { | |
| 567 /* This function can GC */ | |
| 568 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 569 Lisp_Object bodily, ghost; | |
| 570 struct gcpro gcpro1; | |
| 571 | |
| 572 bodily = make_specifier (meths); | |
| 573 GCPRO1 (bodily); | |
| 574 ghost = make_specifier_internal (meths, 0, 0); | |
| 575 UNGCPRO; | |
| 576 | |
| 577 /* Connect guys together */ | |
| 578 XSPECIFIER(bodily)->magic_parent = Qt; | |
| 579 XSPECIFIER(bodily)->fallback = ghost; | |
| 580 XSPECIFIER(ghost)->magic_parent = bodily; | |
| 581 | |
| 582 return bodily; | |
| 583 } | |
| 584 | |
| 585 DEFUN ("make-specifier", Fmake_specifier, 1, 1, 0, /* | |
| 586 Return a new specifier object of type TYPE. | |
| 587 | |
| 588 A specifier is an object that can be used to keep track of a property | |
| 589 whose value can be per-buffer, per-window, per-frame, or per-device, | |
| 442 | 590 and can further be restricted to a particular console-type or |
| 591 device-class. Specifiers are used, for example, for the various | |
| 592 built-in properties of a face; this allows a face to have different | |
| 593 values in different frames, buffers, etc. | |
| 594 | |
| 595 When speaking of the value of a specifier, it is important to | |
| 596 distinguish between the *setting* of a specifier, called an | |
| 597 \"instantiator\", and the *actual value*, called an \"instance\". You | |
| 598 put various possible instantiators (i.e. settings) into a specifier | |
| 599 and associate them with particular locales (buffer, window, frame, | |
| 600 device, global), and then the instance (i.e. actual value) is | |
| 601 retrieved in a specific domain (window, frame, device) by looking | |
| 602 through the possible instantiators (i.e. settings). This process is | |
| 603 called \"instantiation\". | |
| 444 | 604 |
| 442 | 605 To put settings into a specifier, use `set-specifier', or the |
| 606 lower-level functions `add-spec-to-specifier' and | |
| 607 `add-spec-list-to-specifier'. You can also temporarily bind a setting | |
| 608 to a specifier using `let-specifier'. To retrieve settings, use | |
| 609 `specifier-specs', or its lower-level counterpart | |
| 2953 | 610 `specifier-spec-list'. |
| 611 | |
| 612 To determine the actual value (i.e. the instance) in a particular domain, use | |
| 613 `specifier-instance'. To determine the corresponding setting that yielded | |
| 614 the value (i.e. the instantiator), use `specifier-instantiator'. | |
| 442 | 615 |
| 616 For more information, see `set-specifier', `specifier-instance', | |
| 428 | 617 `specifier-specs', and `add-spec-to-specifier'; or, for a detailed |
| 442 | 618 description of specifiers, including how exactly the instantiation |
| 619 process works, see the chapter on specifiers in the XEmacs Lisp | |
| 620 Reference Manual. | |
| 428 | 621 |
| 622 TYPE specifies the particular type of specifier, and should be one of | |
| 2953 | 623 the symbols `generic', `integer', `natnum', `boolean', `color', `font', |
| 624 `image', `face-boolean', `display-table', `gutter', `gutter-size', | |
| 625 `gutter-visible' or `toolbar'. | |
| 442 | 626 |
| 627 For more information on particular types of specifiers, see the | |
| 628 functions `make-generic-specifier', `make-integer-specifier', | |
| 629 `make-natnum-specifier', `make-boolean-specifier', | |
| 630 `make-color-specifier', `make-font-specifier', `make-image-specifier', | |
| 631 `make-face-boolean-specifier', `make-gutter-size-specifier', | |
| 632 `make-gutter-visible-specifier', `default-toolbar', `default-gutter', | |
| 633 and `current-display-table'. | |
| 428 | 634 */ |
| 635 (type)) | |
| 636 { | |
| 637 /* This function can GC */ | |
| 442 | 638 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); |
| 428 | 639 |
| 640 return make_specifier (meths); | |
| 641 } | |
| 642 | |
| 643 DEFUN ("specifierp", Fspecifierp, 1, 1, 0, /* | |
| 644 Return t if OBJECT is a specifier. | |
| 645 | |
| 646 A specifier is an object that can be used to keep track of a property | |
| 647 whose value can be per-buffer, per-window, per-frame, or per-device, | |
| 648 and can further be restricted to a particular console-type or device-class. | |
| 649 See `make-specifier'. | |
| 650 */ | |
| 651 (object)) | |
| 652 { | |
| 653 return SPECIFIERP (object) ? Qt : Qnil; | |
| 654 } | |
| 655 | |
| 656 DEFUN ("specifier-type", Fspecifier_type, 1, 1, 0, /* | |
| 657 Return the type of SPECIFIER. | |
| 658 */ | |
| 659 (specifier)) | |
| 660 { | |
| 661 CHECK_SPECIFIER (specifier); | |
| 662 return intern (XSPECIFIER (specifier)->methods->name); | |
| 663 } | |
| 664 | |
| 665 | |
| 666 /************************************************************************/ | |
| 667 /* Locales and domains */ | |
| 668 /************************************************************************/ | |
| 669 | |
| 670 DEFUN ("valid-specifier-locale-p", Fvalid_specifier_locale_p, 1, 1, 0, /* | |
| 671 Return t if LOCALE is a valid specifier locale. | |
| 2953 | 672 Valid locales are devices, frames, windows, buffers, and `global'. |
| 428 | 673 \(nil is not valid.) |
| 674 */ | |
| 675 (locale)) | |
| 676 { | |
| 677 /* This cannot GC. */ | |
| 678 return ((DEVICEP (locale) && DEVICE_LIVE_P (XDEVICE (locale))) || | |
| 679 (FRAMEP (locale) && FRAME_LIVE_P (XFRAME (locale))) || | |
| 680 (BUFFERP (locale) && BUFFER_LIVE_P (XBUFFER (locale))) || | |
| 681 /* dead windows are allowed because they may become live | |
| 682 windows again when a window configuration is restored */ | |
| 683 WINDOWP (locale) || | |
| 684 EQ (locale, Qglobal)) | |
| 685 ? Qt : Qnil; | |
| 686 } | |
| 687 | |
| 688 DEFUN ("valid-specifier-domain-p", Fvalid_specifier_domain_p, 1, 1, 0, /* | |
| 689 Return t if DOMAIN is a valid specifier domain. | |
| 2953 | 690 A domain is used to instantiate a specifier (i.e. determine the specifier's |
| 442 | 691 value in that domain). Valid domains are image instances, windows, frames, |
| 692 and devices. \(nil is not valid.) image instances are pseudo-domains since | |
| 693 instantiation will actually occur in the window the image instance itself is | |
| 694 instantiated in. | |
| 428 | 695 */ |
| 3659 | 696 (domain)) |
| 428 | 697 { |
| 698 /* This cannot GC. */ | |
| 699 return ((DEVICEP (domain) && DEVICE_LIVE_P (XDEVICE (domain))) || | |
| 700 (FRAMEP (domain) && FRAME_LIVE_P (XFRAME (domain))) || | |
| 442 | 701 (WINDOWP (domain) && WINDOW_LIVE_P (XWINDOW (domain))) || |
| 702 /* #### get image instances out of domains! */ | |
| 703 IMAGE_INSTANCEP (domain)) | |
| 428 | 704 ? Qt : Qnil; |
| 705 } | |
| 706 | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
707 DEFUN ("valid-specifier-locale-type-p", Fvalid_specifier_locale_type_p, 1, |
| 3659 | 708 1, 0, /* |
| 428 | 709 Given a specifier LOCALE-TYPE, return non-nil if it is valid. |
| 2953 | 710 Valid locale types are `global', `device', `frame', `window', and `buffer'. |
| 428 | 711 \(Note, however, that in functions that accept either a locale or a locale |
| 2953 | 712 type, `global' is considered an individual locale.) |
| 428 | 713 */ |
| 3659 | 714 (locale_type)) |
| 428 | 715 { |
| 716 /* This cannot GC. */ | |
| 717 return (EQ (locale_type, Qglobal) || | |
| 718 EQ (locale_type, Qdevice) || | |
| 719 EQ (locale_type, Qframe) || | |
| 720 EQ (locale_type, Qwindow) || | |
| 721 EQ (locale_type, Qbuffer)) ? Qt : Qnil; | |
| 722 } | |
| 723 | |
| 724 static void | |
| 725 check_valid_locale_or_locale_type (Lisp_Object locale) | |
| 726 { | |
| 727 /* This cannot GC. */ | |
| 728 if (EQ (locale, Qall) || | |
| 729 !NILP (Fvalid_specifier_locale_p (locale)) || | |
| 730 !NILP (Fvalid_specifier_locale_type_p (locale))) | |
| 731 return; | |
| 563 | 732 invalid_argument ("Invalid specifier locale or locale type", locale); |
| 428 | 733 } |
| 734 | |
| 735 DEFUN ("specifier-locale-type-from-locale", Fspecifier_locale_type_from_locale, | |
| 736 1, 1, 0, /* | |
| 737 Given a specifier LOCALE, return its type. | |
| 738 */ | |
| 739 (locale)) | |
| 740 { | |
| 741 /* This cannot GC. */ | |
| 742 if (NILP (Fvalid_specifier_locale_p (locale))) | |
| 563 | 743 invalid_argument ("Invalid specifier locale", |
| 3659 | 744 locale); |
| 428 | 745 if (DEVICEP (locale)) return Qdevice; |
| 746 if (FRAMEP (locale)) return Qframe; | |
| 747 if (WINDOWP (locale)) return Qwindow; | |
| 748 if (BUFFERP (locale)) return Qbuffer; | |
| 749 assert (EQ (locale, Qglobal)); | |
| 750 return Qglobal; | |
| 751 } | |
| 752 | |
| 753 static Lisp_Object | |
| 754 decode_locale (Lisp_Object locale) | |
| 755 { | |
| 756 /* This cannot GC. */ | |
| 757 if (NILP (locale)) | |
| 758 return Qglobal; | |
| 759 else if (!NILP (Fvalid_specifier_locale_p (locale))) | |
| 760 return locale; | |
| 761 else | |
| 563 | 762 invalid_argument ("Invalid specifier locale", |
| 3659 | 763 locale); |
| 428 | 764 |
| 765 return Qnil; | |
| 766 } | |
| 767 | |
| 768 static enum spec_locale_type | |
| 769 decode_locale_type (Lisp_Object locale_type) | |
| 770 { | |
| 771 /* This cannot GC. */ | |
| 772 if (EQ (locale_type, Qglobal)) return LOCALE_GLOBAL; | |
| 773 if (EQ (locale_type, Qdevice)) return LOCALE_DEVICE; | |
| 774 if (EQ (locale_type, Qframe)) return LOCALE_FRAME; | |
| 775 if (EQ (locale_type, Qwindow)) return LOCALE_WINDOW; | |
| 776 if (EQ (locale_type, Qbuffer)) return LOCALE_BUFFER; | |
| 777 | |
| 563 | 778 invalid_argument ("Invalid specifier locale type", |
| 3659 | 779 locale_type); |
| 1204 | 780 RETURN_NOT_REACHED (LOCALE_GLOBAL); |
| 428 | 781 } |
| 782 | |
| 783 Lisp_Object | |
| 784 decode_locale_list (Lisp_Object locale) | |
| 785 { | |
| 786 /* This cannot GC. */ | |
| 787 /* The return value of this function must be GCPRO'd. */ | |
| 788 if (NILP (locale)) | |
| 789 { | |
| 790 return list1 (Qall); | |
| 791 } | |
| 792 else if (CONSP (locale)) | |
| 793 { | |
| 794 EXTERNAL_LIST_LOOP_2 (elt, locale) | |
| 795 check_valid_locale_or_locale_type (elt); | |
| 796 return locale; | |
| 797 } | |
| 798 else | |
| 799 { | |
| 800 check_valid_locale_or_locale_type (locale); | |
| 801 return list1 (locale); | |
| 802 } | |
| 803 } | |
| 804 | |
| 805 static enum spec_locale_type | |
| 806 locale_type_from_locale (Lisp_Object locale) | |
| 807 { | |
| 808 return decode_locale_type (Fspecifier_locale_type_from_locale (locale)); | |
| 809 } | |
| 810 | |
| 811 static void | |
| 812 check_valid_domain (Lisp_Object domain) | |
| 813 { | |
| 814 if (NILP (Fvalid_specifier_domain_p (domain))) | |
| 563 | 815 invalid_argument ("Invalid specifier domain", |
| 3659 | 816 domain); |
| 428 | 817 } |
| 818 | |
| 442 | 819 Lisp_Object |
| 428 | 820 decode_domain (Lisp_Object domain) |
| 821 { | |
| 822 if (NILP (domain)) | |
| 823 return Fselected_window (Qnil); | |
| 824 check_valid_domain (domain); | |
| 825 return domain; | |
| 826 } | |
| 827 | |
| 828 | |
| 829 /************************************************************************/ | |
| 830 /* Tags */ | |
| 831 /************************************************************************/ | |
| 832 | |
| 833 DEFUN ("valid-specifier-tag-p", Fvalid_specifier_tag_p, 1, 1, 0, /* | |
| 834 Return non-nil if TAG is a valid specifier tag. | |
| 835 See also `valid-specifier-tag-set-p'. | |
| 836 */ | |
| 837 (tag)) | |
| 838 { | |
| 839 return (valid_console_type_p (tag) || | |
| 840 valid_device_class_p (tag) || | |
| 841 !NILP (assq_no_quit (tag, Vuser_defined_tags))) ? Qt : Qnil; | |
| 842 } | |
| 843 | |
| 844 DEFUN ("valid-specifier-tag-set-p", Fvalid_specifier_tag_set_p, 1, 1, 0, /* | |
| 845 Return non-nil if TAG-SET is a valid specifier tag set. | |
| 846 | |
| 3659 | 847 A specifier tag set is an entity that is attached to an instantiator and can |
| 848 be used to restrict the scope of that instantiator to a particular device | |
| 849 class, device type, or charset. It can also be used to mark instantiators | |
| 850 added by a particular package so that they can be later removed as a group. | |
| 428 | 851 |
| 852 A specifier tag set consists of a list of zero of more specifier tags, | |
| 853 each of which is a symbol that is recognized by XEmacs as a tag. | |
| 854 \(The valid device types and device classes are always tags, as are | |
| 855 any tags defined by `define-specifier-tag'.) It is called a "tag set" | |
| 856 \(as opposed to a list) because the order of the tags or the number of | |
| 857 times a particular tag occurs does not matter. | |
| 858 | |
| 3659 | 859 Each tag has two predicates associated with it, which specify, respectively, |
| 860 whether that tag applies to a particular device and whether it applies to a | |
| 861 particular character set. The predefined tags which are device types and | |
| 862 classes match devices of that type or class. User-defined tags can have any | |
| 863 device predicate, or none (meaning that all devices match). When attempting | |
| 864 to instantiate a specifier, a particular instantiator is only considered if | |
| 865 the device of the domain being instantiated over matches all tags in the tag | |
| 866 set attached to that instantiator. | |
| 867 | |
| 868 If a charset is to be considered--which is only the case for face | |
| 869 instantiators--this consideration may be done twice. The first iteration | |
| 870 pays attention to the character set predicates; if no instantiator can be | |
| 871 found in that case, the search is repeated ignoring the character set | |
| 872 predicates. | |
| 428 | 873 |
| 874 Most of the time, a tag set is not specified, and the instantiator | |
| 875 gets a null tag set, which matches all devices. | |
| 876 */ | |
| 3659 | 877 (tag_set)) |
| 428 | 878 { |
| 879 Lisp_Object rest; | |
| 880 | |
| 881 for (rest = tag_set; !NILP (rest); rest = XCDR (rest)) | |
| 882 { | |
| 883 if (!CONSP (rest)) | |
| 884 return Qnil; | |
| 885 if (NILP (Fvalid_specifier_tag_p (XCAR (rest)))) | |
| 886 return Qnil; | |
| 887 QUIT; | |
| 888 } | |
| 889 return Qt; | |
| 890 } | |
| 891 | |
| 892 Lisp_Object | |
| 893 decode_specifier_tag_set (Lisp_Object tag_set) | |
| 894 { | |
| 895 /* The return value of this function must be GCPRO'd. */ | |
| 896 if (!NILP (Fvalid_specifier_tag_p (tag_set))) | |
| 897 return list1 (tag_set); | |
| 898 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 899 invalid_argument ("Invalid specifier tag-set", |
| 3659 | 900 tag_set); |
| 428 | 901 return tag_set; |
| 902 } | |
| 903 | |
| 904 static Lisp_Object | |
| 905 canonicalize_tag_set (Lisp_Object tag_set) | |
| 906 { | |
| 907 int len = XINT (Flength (tag_set)); | |
| 908 Lisp_Object *tags, rest; | |
| 909 int i, j; | |
| 910 | |
| 911 /* We assume in this function that the tag_set has already been | |
| 912 validated, so there are no surprises. */ | |
| 913 | |
| 914 if (len == 0 || len == 1) | |
| 915 /* most common case */ | |
| 916 return tag_set; | |
| 917 | |
| 918 tags = alloca_array (Lisp_Object, len); | |
| 919 | |
| 920 i = 0; | |
| 921 LIST_LOOP (rest, tag_set) | |
| 922 tags[i++] = XCAR (rest); | |
| 923 | |
| 924 /* Sort the list of tags. We use a bubble sort here (copied from | |
| 925 extent_fragment_update()) -- reduces the function call overhead, | |
| 926 and is the fastest sort for small numbers of items. */ | |
| 927 | |
| 928 for (i = 1; i < len; i++) | |
| 929 { | |
| 930 j = i - 1; | |
| 931 while (j >= 0 && | |
| 793 | 932 qxestrcmp (XSTRING_DATA (XSYMBOL (tags[j])->name), |
| 933 XSTRING_DATA (XSYMBOL (tags[j+1])->name)) > 0) | |
| 428 | 934 { |
| 935 Lisp_Object tmp = tags[j]; | |
| 936 tags[j] = tags[j+1]; | |
| 937 tags[j+1] = tmp; | |
| 938 j--; | |
| 939 } | |
| 940 } | |
| 941 | |
| 942 /* Now eliminate duplicates. */ | |
| 943 | |
| 944 for (i = 1, j = 1; i < len; i++) | |
| 945 { | |
| 946 /* j holds the destination, i the source. */ | |
| 947 if (!EQ (tags[i], tags[i-1])) | |
| 948 tags[j++] = tags[i]; | |
| 949 } | |
| 950 | |
| 951 return Flist (j, tags); | |
| 952 } | |
| 953 | |
| 954 DEFUN ("canonicalize-tag-set", Fcanonicalize_tag_set, 1, 1, 0, /* | |
| 955 Canonicalize the given tag set. | |
| 956 Two canonicalized tag sets can be compared with `equal' to see if they | |
| 957 represent the same tag set. (Specifically, canonicalizing involves | |
| 958 sorting by symbol name and removing duplicates.) | |
| 959 */ | |
| 960 (tag_set)) | |
| 961 { | |
| 962 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 963 invalid_argument ("Invalid tag set", tag_set); |
| 428 | 964 return canonicalize_tag_set (tag_set); |
| 965 } | |
| 966 | |
| 967 static int | |
| 968 device_matches_specifier_tag_set_p (Lisp_Object device, Lisp_Object tag_set) | |
| 969 { | |
| 970 Lisp_Object devtype, devclass, rest; | |
| 971 struct device *d = XDEVICE (device); | |
| 972 | |
| 973 devtype = DEVICE_TYPE (d); | |
| 974 devclass = DEVICE_CLASS (d); | |
| 975 | |
| 976 LIST_LOOP (rest, tag_set) | |
| 977 { | |
| 978 Lisp_Object tag = XCAR (rest); | |
| 979 Lisp_Object assoc; | |
| 980 | |
| 981 if (EQ (tag, devtype) || EQ (tag, devclass)) | |
| 982 continue; | |
| 983 assoc = assq_no_quit (tag, DEVICE_USER_DEFINED_TAGS (d)); | |
| 984 /* other built-in tags (device types/classes) are not in | |
| 985 the user-defined-tags list. */ | |
| 986 if (NILP (assoc) || NILP (XCDR (assoc))) | |
| 987 return 0; | |
| 988 } | |
| 989 | |
| 990 return 1; | |
| 991 } | |
| 992 | |
| 3659 | 993 static int |
|
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994 charset_matches_specifier_tag_set_p (Lisp_Object charset, Lisp_Object tag_set, |
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995 enum font_specifier_matchspec_stages |
| 3659 | 996 stage) |
| 997 { | |
| 998 Lisp_Object rest; | |
| 999 int res = 0; | |
| 1000 | |
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1001 assert(stage < NUM_MATCHSPEC_STAGES); |
| 3659 | 1002 |
| 1003 LIST_LOOP (rest, tag_set) | |
| 1004 { | |
| 1005 Lisp_Object tag = XCAR (rest); | |
| 1006 Lisp_Object assoc; | |
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1007 Lisp_Object tag_list = Fgethash (charset, Vcharset_tag_lists, Qnil); |
| 3659 | 1008 |
| 3736 | 1009 /* In the event that, during the creation of a charset, no specifier |
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1010 tags exist for which CHARSET-PREDICATE has been specified, then |
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1011 that charset's entry in Vcharset_tag_lists will be nil, and this |
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1012 charset shouldn't match. */ |
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1013 |
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1014 if (NILP (tag_list)) |
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1015 { |
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1016 return 0; |
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1017 } |
| 3659 | 1018 |
| 1019 /* Now, find out what the pre-calculated value is. */ | |
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1020 assoc = assq_no_quit (tag, tag_list); |
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1021 |
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1022 if (!(NILP (assoc))) |
| 3659 | 1023 { |
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1024 assert (VECTORP (XCDR (assoc))); |
| 3659 | 1025 |
| 1026 /* In the event that a tag specifies a charset, then the specifier | |
| 1027 must match for (this stage and this charset) for all | |
| 1028 charset-specifying tags. */ | |
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1029 if (NILP (XVECTOR_DATA (XCDR (assoc))[stage])) |
| 3659 | 1030 { |
| 1031 /* It doesn't match for this tag, even though the tag | |
| 1032 specifies a charset. Return 0. */ | |
| 1033 return 0; | |
| 1034 } | |
| 1035 | |
| 1036 /* This tag specifies charset limitations, and this charset and | |
| 1037 stage match those charset limitations. | |
| 1038 | |
| 1039 In the event that a later tag specifies charset limitations | |
| 1040 that don't match, the return 0 above prevents us giving a | |
| 1041 positive match. */ | |
| 1042 res = 1; | |
| 1043 } | |
| 1044 } | |
| 1045 | |
| 1046 return res; | |
| 1047 } | |
| 1048 | |
| 1049 | |
| 442 | 1050 DEFUN ("device-matches-specifier-tag-set-p", |
| 1051 Fdevice_matches_specifier_tag_set_p, 2, 2, 0, /* | |
| 428 | 1052 Return non-nil if DEVICE matches specifier tag set TAG-SET. |
| 1053 This means that DEVICE matches each tag in the tag set. (Every | |
| 1054 tag recognized by XEmacs has a predicate associated with it that | |
| 1055 specifies which devices match it.) | |
| 1056 */ | |
| 1057 (device, tag_set)) | |
| 1058 { | |
| 1059 CHECK_LIVE_DEVICE (device); | |
| 1060 | |
| 1061 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 1062 invalid_argument ("Invalid tag set", tag_set); |
| 428 | 1063 |
| 1064 return device_matches_specifier_tag_set_p (device, tag_set) ? Qt : Qnil; | |
| 1065 } | |
| 1066 | |
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1067 /* Call CHARSET_PREDICATE on CHARSET, evaluating it at both stages (initial |
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1068 and final) and returning a size-two vector of the results. */ |
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1069 |
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1070 static Lisp_Object |
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1071 call_charset_predicate (Lisp_Object charset_predicate, Lisp_Object charset) |
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1072 { |
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1073 struct gcpro gcpro1; |
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1074 Lisp_Object charpres = make_vector (NUM_MATCHSPEC_STAGES, Qnil); |
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1075 int max_args = XINT (Ffunction_max_args (charset_predicate)); |
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1076 GCPRO1 (charpres); |
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1077 |
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1078 |
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1079 #define DEFINE_SPECIFIER_TAG_FROB(stage, enumstage) \ |
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1080 do { \ |
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1081 if (max_args > 1) \ |
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1082 { \ |
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1083 XVECTOR_DATA (charpres)[enumstage] = \ |
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1084 call2_trapping_problems \ |
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1085 ("Error during specifier tag charset predicate," \ |
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1086 " stage " #stage, charset_predicate, \ |
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1087 charset, Q##stage, 0); \ |
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1088 } \ |
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1089 else \ |
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1090 { \ |
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1091 XVECTOR_DATA (charpres)[enumstage] = \ |
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1092 call1_trapping_problems \ |
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1093 ("Error during specifier tag charset predicate," \ |
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1094 " stage " #stage, charset_predicate, \ |
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1095 charset, 0); \ |
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1096 } \ |
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1097 \ |
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1098 if (UNBOUNDP (XVECTOR_DATA (charpres)[enumstage])) \ |
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1099 { \ |
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1100 XVECTOR_DATA (charpres)[enumstage] = Qnil; \ |
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1101 } \ |
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1102 else if (!NILP (XVECTOR_DATA (charpres)[enumstage])) \ |
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1103 { \ |
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1104 /* Don't want refs to random other objects. */ \ |
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1105 XVECTOR_DATA (charpres)[enumstage] = Qt; \ |
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1106 } \ |
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1107 } while (0) |
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1108 |
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1109 DEFINE_SPECIFIER_TAG_FROB (initial, STAGE_INITIAL); |
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1110 DEFINE_SPECIFIER_TAG_FROB (final, STAGE_FINAL); |
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1111 |
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1112 #undef DEFINE_SPECIFIER_TAG_FROB |
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1113 |
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1114 UNGCPRO; |
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1115 |
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1116 return charpres; |
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1117 } |
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1118 |
| 3659 | 1119 Lisp_Object |
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1120 define_specifier_tag (Lisp_Object tag, Lisp_Object device_predicate, |
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1121 Lisp_Object charset_predicate) |
| 428 | 1122 { |
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1123 Lisp_Object assoc = assq_no_quit (tag, Vuser_defined_tags), |
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1124 concons, devcons; |
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1125 int recompute_devices = 0, recompute_charsets = 0; |
| 3659 | 1126 |
| 428 | 1127 if (NILP (assoc)) |
| 1128 { | |
| 3659 | 1129 recompute_devices = recompute_charsets = 1; |
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1130 Vuser_defined_tags = Fcons (list3 (tag, device_predicate, |
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1131 charset_predicate), |
| 3659 | 1132 Vuser_defined_tags); |
| 428 | 1133 DEVICE_LOOP_NO_BREAK (devcons, concons) |
| 1134 { | |
| 1135 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1136 /* Initially set the value to t in case of error | |
| 3659 | 1137 in device_predicate */ |
| 428 | 1138 DEVICE_USER_DEFINED_TAGS (d) = |
| 1139 Fcons (Fcons (tag, Qt), DEVICE_USER_DEFINED_TAGS (d)); | |
| 1140 } | |
| 1141 } | |
| 3659 | 1142 else if (!NILP (device_predicate) && !NILP (XCADR (assoc))) |
| 428 | 1143 { |
| 3659 | 1144 recompute_devices = 1; |
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1145 XCDR (assoc) = list2 (device_predicate, charset_predicate); |
| 428 | 1146 } |
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1147 else if (!NILP (charset_predicate) || !NILP (XCADDR (assoc))) |
| 3659 | 1148 { |
| 1149 /* If there exists a charset_predicate for the tag currently (even if | |
| 1150 the new charset_predicate is nil), or if we're adding one, we need | |
| 1151 to recompute. This contrasts with the device predicates, where we | |
| 1152 don't need to recompute if the old and new device predicates are | |
| 1153 both nil. */ | |
| 1154 | |
| 1155 recompute_charsets = 1; | |
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|
1156 XCDR (assoc) = list2 (device_predicate, charset_predicate); |
| 3659 | 1157 } |
| 1158 | |
| 1159 /* Recompute the tag values for all devices and charsets, if necessary. In | |
| 1160 the special case where both the old and new device_predicates are nil, | |
| 1161 we know that we don't have to do it for the device. (It's probably | |
| 1162 common for people to call (define-specifier-tag) more than once on the | |
| 1163 same tag, and the most common case is where DEVICE_PREDICATE is not | |
| 1164 specified.) */ | |
| 1165 | |
| 1166 if (recompute_devices) | |
| 428 | 1167 { |
| 1168 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1169 { | |
| 1170 Lisp_Object device = XCAR (devcons); | |
| 1171 assoc = assq_no_quit (tag, | |
| 1172 DEVICE_USER_DEFINED_TAGS (XDEVICE (device))); | |
| 1173 assert (CONSP (assoc)); | |
| 3659 | 1174 if (NILP (device_predicate)) |
| 428 | 1175 XCDR (assoc) = Qt; |
| 1176 else | |
| 3659 | 1177 XCDR (assoc) = !NILP (call1 (device_predicate, device)) ? Qt |
| 1178 : Qnil; | |
| 428 | 1179 } |
| 1180 } | |
| 1181 | |
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1182 if (recompute_charsets) |
| 3659 | 1183 { |
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1184 |
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1185 LIST_LOOP_2 (charset_name, Fcharset_list ()) |
| 3659 | 1186 { |
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1187 Lisp_Object charset = Fget_charset (charset_name); |
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1188 Lisp_Object tag_list = Fgethash (charset, Vcharset_tag_lists, Qnil); |
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1189 Lisp_Object charpres; |
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1190 |
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1191 if (NILP (charset_predicate)) |
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1192 continue; |
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1193 |
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1194 charpres = call_charset_predicate (charset_predicate, charset); |
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1195 |
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1196 assoc = assq_no_quit (tag, tag_list); |
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1197 if (!NILP (assoc)) |
| 3659 | 1198 { |
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1199 assert (CONSP (assoc)); |
| 3659 | 1200 XCDR (assoc) = charpres; |
| 1201 } | |
| 1202 else | |
| 1203 { | |
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1204 Fputhash (charset, Fcons (Fcons (tag, charpres), tag_list), |
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1205 Vcharset_tag_lists); |
| 3659 | 1206 } |
| 1207 } | |
| 1208 } | |
| 1209 return Qt; | |
| 1210 } | |
| 1211 | |
| 1212 DEFUN ("define-specifier-tag", Fdefine_specifier_tag, 1, 3, 0, /* | |
| 1213 Define a new specifier tag. | |
| 1214 | |
| 1215 If DEVICE-PREDICATE is specified, it should be a function of one argument | |
| 1216 \(a device) that specifies whether the tag matches that particular device. | |
| 1217 If DEVICE-PREDICATE is omitted, the tag matches all devices. | |
| 1218 | |
| 1219 If CHARSET-PREDICATE is supplied, it should be a function taking a single | |
| 1220 Lisp character set argument. A tag's charset predicate is primarily used to | |
| 1221 determine what font to use for a given \(set of) charset\(s) when that tag | |
| 1222 is used in a set-face-font call; a non-nil return value indicates that the | |
| 1223 tag matches the charset. | |
| 1224 | |
| 1225 The font matching process also has a concept of stages; the defined stages | |
| 1226 are currently `initial' and `final', and there exist specifier tags with | |
| 1227 those names that correspond to those stages. On X11, 'initial is used when | |
| 1228 the font matching process is looking for fonts that match the desired | |
| 1229 registries of the charset--see the `charset-registries' function. If that | |
| 1230 match process fails, then the 'final tag becomes relevant; this means that a | |
| 1231 more general lookup is desired, and that a font doesn't necessarily have to | |
| 1232 match the desired XLFD for the face, just the charset repertoire for this | |
| 1233 charset. It also means that the charset registry and encoding used will be | |
| 1234 `iso10646-1', and the characters will be converted to display using that | |
| 1235 registry. | |
| 1236 | |
| 1237 If a tag set matches no character set; the two-stage match process will | |
| 1238 ignore the tag on its first pass, but if no match is found, it will respect | |
| 1239 it on the second pass, where character set information is ignored. | |
| 1240 | |
| 1241 You can redefine an existing user-defined specifier tag. However, you | |
| 1242 cannot redefine most of the built-in specifier tags \(the device types and | |
| 1243 classes, `initial', and `final') or the symbols nil, t, `all', or `global'. | |
| 1244 Note that if a device type is not supported in this XEmacs, it will not be | |
| 1245 available as a built-in specifier tag; this is probably something we should | |
| 1246 change. | |
| 1247 */ | |
| 1248 (tag, device_predicate, charset_predicate)) | |
| 1249 { | |
| 1250 CHECK_SYMBOL (tag); | |
| 1251 if (valid_device_class_p (tag) || | |
| 1252 valid_console_type_p (tag) || | |
| 1253 EQ (tag, Qinitial) || EQ (tag, Qfinal)) | |
| 1254 invalid_change ("Cannot redefine built-in specifier tags", tag); | |
| 1255 /* Try to prevent common instantiators and locales from being | |
| 1256 redefined, to reduce ambiguity */ | |
| 1257 if (NILP (tag) || EQ (tag, Qt) || EQ (tag, Qall) || EQ (tag, Qglobal)) | |
| 1258 invalid_change ("Cannot define nil, t, `all', or `global'", tag); | |
| 1259 | |
| 1260 if (!NILP (charset_predicate)) | |
| 1261 { | |
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1262 Lisp_Object min_args = Ffunction_min_args (charset_predicate); |
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1263 Lisp_Object max_args = Ffunction_max_args (charset_predicate); |
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1264 if (!(INTP (min_args) && XINT (min_args) == 1 && |
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1265 INTP (max_args) && XINT (max_args) == 1)) |
| 3659 | 1266 { |
| 1267 /* We only allow the stage argument to be specifed from C. */ | |
| 1268 invalid_change ("Charset predicate must take one argument", | |
| 1269 tag); | |
| 1270 } | |
| 1271 } | |
| 1272 | |
| 1273 return define_specifier_tag(tag, device_predicate, charset_predicate); | |
| 428 | 1274 } |
| 1275 | |
| 1276 /* Called at device-creation time to initialize the user-defined | |
| 1277 tag values for the newly-created device. */ | |
| 1278 | |
| 1279 void | |
| 1280 setup_device_initial_specifier_tags (struct device *d) | |
| 1281 { | |
| 1282 Lisp_Object rest, rest2; | |
| 793 | 1283 Lisp_Object device = wrap_device (d); |
| 3836 | 1284 Lisp_Object device_predicate; |
| 3659 | 1285 int list_len; |
| 793 | 1286 |
| 428 | 1287 DEVICE_USER_DEFINED_TAGS (d) = Fcopy_alist (Vuser_defined_tags); |
| 1288 | |
| 1289 /* Now set up the initial values */ | |
| 1290 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d)) | |
| 1291 XCDR (XCAR (rest)) = Qt; | |
| 1292 | |
| 1293 for (rest = Vuser_defined_tags, rest2 = DEVICE_USER_DEFINED_TAGS (d); | |
| 1294 !NILP (rest); rest = XCDR (rest), rest2 = XCDR (rest2)) | |
| 1295 { | |
| 3659 | 1296 GET_LIST_LENGTH(XCAR(rest), list_len); |
| 1297 | |
| 1298 assert(3 == list_len); | |
| 1299 | |
| 1300 device_predicate = XCADR(XCAR (rest)); | |
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1301 |
| 3659 | 1302 if (NILP (device_predicate)) |
| 1303 { | |
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1304 XCDR (XCAR (rest2)) = Qt; |
| 3659 | 1305 } |
| 428 | 1306 else |
| 3659 | 1307 { |
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1308 device_predicate = !NILP (call_critical_lisp_code |
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1309 (d, device_predicate, device)) |
| 3659 | 1310 ? Qt : Qnil; |
| 3817 | 1311 XCDR (XCAR (rest2)) = device_predicate; |
| 3659 | 1312 } |
| 428 | 1313 } |
| 1314 } | |
| 1315 | |
| 3659 | 1316 void |
| 1317 setup_charset_initial_specifier_tags (Lisp_Object charset) | |
| 1318 { | |
| 1319 Lisp_Object rest, charset_predicate, tag, new_value; | |
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1320 Lisp_Object charset_tag_list = Qnil; |
| 3659 | 1321 |
| 1322 LIST_LOOP (rest, Vuser_defined_tags) | |
| 1323 { | |
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1324 tag = XCAR (XCAR (rest)); |
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1325 charset_predicate = XCADDR (XCAR (rest)); |
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1326 |
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1327 if (NILP (charset_predicate)) |
| 3659 | 1328 { |
| 1329 continue; | |
| 1330 } | |
| 1331 | |
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1332 new_value = call_charset_predicate (charset_predicate, charset); |
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1333 charset_tag_list = Fcons (Fcons (tag, new_value), charset_tag_list); |
| 3659 | 1334 } |
| 1335 | |
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1336 Fputhash (charset, charset_tag_list, Vcharset_tag_lists); |
| 3659 | 1337 } |
| 1338 | |
| 3673 | 1339 /* VM calls this, in vm-multiple-frames-possible-p, in the event that you're |
| 1340 considering taking it out. */ | |
| 3659 | 1341 |
| 442 | 1342 DEFUN ("device-matching-specifier-tag-list", |
| 1343 Fdevice_matching_specifier_tag_list, | |
| 428 | 1344 0, 1, 0, /* |
| 3673 | 1345 Return a list of all specifier tags matching DEVICE. |
| 1346 DEVICE defaults to the selected device if omitted. | |
| 1347 */ | |
| 428 | 1348 (device)) |
| 1349 { | |
| 1350 struct device *d = decode_device (device); | |
| 1351 Lisp_Object rest, list = Qnil; | |
| 1352 struct gcpro gcpro1; | |
| 1353 | |
| 1354 GCPRO1 (list); | |
| 1355 | |
| 1356 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d)) | |
| 1357 { | |
| 3836 | 1358 if (!NILP (XCDR (XCAR (rest)))) |
| 428 | 1359 list = Fcons (XCAR (XCAR (rest)), list); |
| 1360 } | |
| 1361 | |
| 1362 list = Fnreverse (list); | |
| 1363 list = Fcons (DEVICE_CLASS (d), list); | |
| 1364 list = Fcons (DEVICE_TYPE (d), list); | |
| 1365 | |
| 1366 RETURN_UNGCPRO (list); | |
| 1367 } | |
| 1368 | |
| 1369 DEFUN ("specifier-tag-list", Fspecifier_tag_list, 0, 0, 0, /* | |
| 1370 Return a list of all currently-defined specifier tags. | |
| 1371 This includes the built-in ones (the device types and classes). | |
| 1372 */ | |
| 1373 ()) | |
| 1374 { | |
| 1375 Lisp_Object list = Qnil, rest; | |
| 1376 struct gcpro gcpro1; | |
| 1377 | |
| 1378 GCPRO1 (list); | |
| 1379 | |
| 1380 LIST_LOOP (rest, Vuser_defined_tags) | |
| 1381 list = Fcons (XCAR (XCAR (rest)), list); | |
| 1382 | |
| 1383 list = Fnreverse (list); | |
| 1384 list = nconc2 (Fcopy_sequence (Vdevice_class_list), list); | |
| 1385 list = nconc2 (Fcopy_sequence (Vconsole_type_list), list); | |
| 1386 | |
| 1387 RETURN_UNGCPRO (list); | |
| 1388 } | |
| 1389 | |
| 3659 | 1390 DEFUN ("specifier-tag-device-predicate", Fspecifier_tag_device_predicate, |
| 1391 1, 1, 0, /* | |
| 1392 Return the device predicate for the given specifier tag. | |
| 428 | 1393 */ |
| 1394 (tag)) | |
| 1395 { | |
| 1396 /* The return value of this function must be GCPRO'd. */ | |
| 1397 CHECK_SYMBOL (tag); | |
| 1398 | |
| 1399 if (NILP (Fvalid_specifier_tag_p (tag))) | |
| 563 | 1400 invalid_argument ("Invalid specifier tag", |
| 3659 | 1401 tag); |
| 428 | 1402 |
| 1403 /* Make up some predicates for the built-in types */ | |
| 1404 | |
| 1405 if (valid_console_type_p (tag)) | |
| 1406 return list3 (Qlambda, list1 (Qdevice), | |
| 1407 list3 (Qeq, list2 (Qquote, tag), | |
| 1408 list2 (Qconsole_type, Qdevice))); | |
| 1409 | |
| 1410 if (valid_device_class_p (tag)) | |
| 1411 return list3 (Qlambda, list1 (Qdevice), | |
| 1412 list3 (Qeq, list2 (Qquote, tag), | |
| 1413 list2 (Qdevice_class, Qdevice))); | |
| 1414 | |
| 3659 | 1415 return XCADR (assq_no_quit (tag, Vuser_defined_tags)); |
| 1416 } | |
| 1417 | |
| 1418 DEFUN ("specifier-tag-charset-predicate", Fspecifier_tag_charset_predicate, | |
| 1419 1, 1, 0, /* | |
| 3673 | 1420 Return the charset predicate for the given specifier tag. |
| 1421 */ | |
| 3659 | 1422 (tag)) |
| 1423 { | |
| 1424 /* The return value of this function must be GCPRO'd. */ | |
| 1425 CHECK_SYMBOL (tag); | |
| 1426 | |
| 1427 if (NILP (Fvalid_specifier_tag_p (tag))) | |
| 1428 invalid_argument ("Invalid specifier tag", | |
| 1429 tag); | |
| 1430 | |
| 1431 return XCADDR (assq_no_quit (tag, Vuser_defined_tags)); | |
| 428 | 1432 } |
| 1433 | |
| 1434 /* Return true if A "matches" B. If EXACT_P is 0, A must be a subset of B. | |
| 3659 | 1435 Otherwise, A must be `equal' to B. The sets must be canonicalized. */ |
| 428 | 1436 static int |
| 1437 tag_sets_match_p (Lisp_Object a, Lisp_Object b, int exact_p) | |
| 1438 { | |
| 1439 if (!exact_p) | |
| 1440 { | |
| 1441 while (!NILP (a) && !NILP (b)) | |
| 1442 { | |
| 1443 if (EQ (XCAR (a), XCAR (b))) | |
| 1444 a = XCDR (a); | |
| 1445 b = XCDR (b); | |
| 1446 } | |
| 1447 | |
| 1448 return NILP (a); | |
| 1449 } | |
| 1450 else | |
| 1451 { | |
| 1452 while (!NILP (a) && !NILP (b)) | |
| 1453 { | |
| 1454 if (!EQ (XCAR (a), XCAR (b))) | |
| 1455 return 0; | |
| 1456 a = XCDR (a); | |
| 1457 b = XCDR (b); | |
| 1458 } | |
| 1459 | |
| 1460 return NILP (a) && NILP (b); | |
| 1461 } | |
| 1462 } | |
| 1463 | |
| 1464 | |
| 1465 /************************************************************************/ | |
| 1466 /* Spec-lists and inst-lists */ | |
| 1467 /************************************************************************/ | |
| 1468 | |
| 1469 static Lisp_Object | |
| 1470 call_validate_method (Lisp_Object boxed_method, Lisp_Object instantiator) | |
| 1471 { | |
| 1472 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (instantiator); | |
| 1473 return Qt; | |
| 1474 } | |
| 1475 | |
| 1476 static Lisp_Object | |
| 1477 check_valid_instantiator (Lisp_Object instantiator, | |
| 1478 struct specifier_methods *meths, | |
| 578 | 1479 Error_Behavior errb) |
| 428 | 1480 { |
| 1481 if (meths->validate_method) | |
| 1482 { | |
| 1483 Lisp_Object retval; | |
| 1484 | |
| 1485 if (ERRB_EQ (errb, ERROR_ME)) | |
| 1486 { | |
| 1487 (meths->validate_method) (instantiator); | |
| 1488 retval = Qt; | |
| 1489 } | |
| 1490 else | |
| 1491 { | |
| 1492 Lisp_Object opaque = make_opaque_ptr ((void *) | |
| 1493 meths->validate_method); | |
| 1494 struct gcpro gcpro1; | |
| 1495 | |
| 1496 GCPRO1 (opaque); | |
| 1497 retval = call_with_suspended_errors | |
| 1498 ((lisp_fn_t) call_validate_method, | |
| 1499 Qnil, Qspecifier, errb, 2, opaque, instantiator); | |
| 1500 | |
| 1501 free_opaque_ptr (opaque); | |
| 1502 UNGCPRO; | |
| 1503 } | |
| 1504 | |
| 1505 return retval; | |
| 1506 } | |
| 1507 return Qt; | |
| 1508 } | |
| 1509 | |
| 1510 DEFUN ("check-valid-instantiator", Fcheck_valid_instantiator, 2, 2, 0, /* | |
| 1511 Signal an error if INSTANTIATOR is invalid for SPECIFIER-TYPE. | |
| 1512 */ | |
| 1513 (instantiator, specifier_type)) | |
| 1514 { | |
| 1515 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 1516 ERROR_ME); | |
| 1517 | |
| 1518 return check_valid_instantiator (instantiator, meths, ERROR_ME); | |
| 1519 } | |
| 1520 | |
| 1521 DEFUN ("valid-instantiator-p", Fvalid_instantiator_p, 2, 2, 0, /* | |
| 1522 Return non-nil if INSTANTIATOR is valid for SPECIFIER-TYPE. | |
| 1523 */ | |
| 1524 (instantiator, specifier_type)) | |
| 1525 { | |
| 1526 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 1527 ERROR_ME); | |
| 1528 | |
| 1529 return check_valid_instantiator (instantiator, meths, ERROR_ME_NOT); | |
| 1530 } | |
| 1531 | |
| 1532 static Lisp_Object | |
| 1533 check_valid_inst_list (Lisp_Object inst_list, struct specifier_methods *meths, | |
| 578 | 1534 Error_Behavior errb) |
| 428 | 1535 { |
| 2159 | 1536 EXTERNAL_LIST_LOOP_2 (inst_pair, inst_list) |
| 428 | 1537 { |
| 2159 | 1538 Lisp_Object tag_set; |
| 1539 | |
| 1540 if (!CONSP (inst_pair)) | |
| 428 | 1541 { |
| 563 | 1542 maybe_sferror ( |
| 3659 | 1543 "Invalid instantiator pair", inst_pair, |
| 1544 Qspecifier, errb); | |
| 428 | 1545 return Qnil; |
| 1546 } | |
| 1547 if (NILP (Fvalid_specifier_tag_set_p (tag_set = XCAR (inst_pair)))) | |
| 1548 { | |
| 563 | 1549 maybe_invalid_argument ( |
| 3659 | 1550 "Invalid specifier tag", tag_set, |
| 1551 Qspecifier, errb); | |
| 428 | 1552 return Qnil; |
| 1553 } | |
| 1554 | |
| 1555 if (NILP (check_valid_instantiator (XCDR (inst_pair), meths, errb))) | |
| 1556 return Qnil; | |
| 1557 } | |
| 1558 | |
| 1559 return Qt; | |
| 1560 } | |
| 1561 | |
| 1562 DEFUN ("check-valid-inst-list", Fcheck_valid_inst_list, 2, 2, 0, /* | |
| 1563 Signal an error if INST-LIST is invalid for specifier type TYPE. | |
| 1564 */ | |
| 1565 (inst_list, type)) | |
| 1566 { | |
| 1567 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1568 | |
| 1569 return check_valid_inst_list (inst_list, meths, ERROR_ME); | |
| 1570 } | |
| 1571 | |
| 1572 DEFUN ("valid-inst-list-p", Fvalid_inst_list_p, 2, 2, 0, /* | |
| 1573 Return non-nil if INST-LIST is valid for specifier type TYPE. | |
| 1574 */ | |
| 1575 (inst_list, type)) | |
| 1576 { | |
| 1577 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1578 | |
| 1579 return check_valid_inst_list (inst_list, meths, ERROR_ME_NOT); | |
| 1580 } | |
| 1581 | |
| 1582 static Lisp_Object | |
| 1583 check_valid_spec_list (Lisp_Object spec_list, struct specifier_methods *meths, | |
| 578 | 1584 Error_Behavior errb) |
| 428 | 1585 { |
| 2159 | 1586 EXTERNAL_LIST_LOOP_2 (spec, spec_list) |
| 428 | 1587 { |
| 2159 | 1588 Lisp_Object locale; |
| 1589 if (!CONSP (spec)) | |
| 428 | 1590 { |
| 563 | 1591 maybe_sferror ( |
| 3659 | 1592 "Invalid specification list", spec_list, |
| 1593 Qspecifier, errb); | |
| 428 | 1594 return Qnil; |
| 1595 } | |
| 1596 if (NILP (Fvalid_specifier_locale_p (locale = XCAR (spec)))) | |
| 1597 { | |
| 563 | 1598 maybe_invalid_argument ( |
| 3659 | 1599 "Invalid specifier locale", locale, |
| 1600 Qspecifier, errb); | |
| 428 | 1601 return Qnil; |
| 1602 } | |
| 1603 | |
| 1604 if (NILP (check_valid_inst_list (XCDR (spec), meths, errb))) | |
| 1605 return Qnil; | |
| 1606 } | |
| 1607 | |
| 1608 return Qt; | |
| 1609 } | |
| 1610 | |
| 1611 DEFUN ("check-valid-spec-list", Fcheck_valid_spec_list, 2, 2, 0, /* | |
| 1612 Signal an error if SPEC-LIST is invalid for specifier type TYPE. | |
| 1613 */ | |
| 1614 (spec_list, type)) | |
| 1615 { | |
| 1616 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1617 | |
| 1618 return check_valid_spec_list (spec_list, meths, ERROR_ME); | |
| 1619 } | |
| 1620 | |
| 1621 DEFUN ("valid-spec-list-p", Fvalid_spec_list_p, 2, 2, 0, /* | |
| 1622 Return non-nil if SPEC-LIST is valid for specifier type TYPE. | |
| 1623 */ | |
| 1624 (spec_list, type)) | |
| 1625 { | |
| 1626 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1627 | |
| 1628 return check_valid_spec_list (spec_list, meths, ERROR_ME_NOT); | |
| 1629 } | |
| 1630 | |
| 1631 enum spec_add_meth | |
| 1632 decode_how_to_add_specification (Lisp_Object how_to_add) | |
| 1633 { | |
| 1634 if (NILP (how_to_add) || EQ (Qremove_tag_set_prepend, how_to_add)) | |
| 1635 return SPEC_REMOVE_TAG_SET_PREPEND; | |
| 1636 if (EQ (Qremove_tag_set_append, how_to_add)) | |
| 1637 return SPEC_REMOVE_TAG_SET_APPEND; | |
| 1638 if (EQ (Qappend, how_to_add)) | |
| 1639 return SPEC_APPEND; | |
| 1640 if (EQ (Qprepend, how_to_add)) | |
| 1641 return SPEC_PREPEND; | |
| 1642 if (EQ (Qremove_locale, how_to_add)) | |
| 1643 return SPEC_REMOVE_LOCALE; | |
| 1644 if (EQ (Qremove_locale_type, how_to_add)) | |
| 1645 return SPEC_REMOVE_LOCALE_TYPE; | |
| 1646 if (EQ (Qremove_all, how_to_add)) | |
| 1647 return SPEC_REMOVE_ALL; | |
| 1648 | |
| 563 | 1649 invalid_constant ("Invalid `how-to-add' flag", how_to_add); |
| 428 | 1650 |
| 1204 | 1651 RETURN_NOT_REACHED (SPEC_PREPEND); |
| 428 | 1652 } |
| 1653 | |
| 1654 /* Given a specifier object SPEC, return bodily specifier if SPEC is a | |
| 1655 ghost specifier, otherwise return the object itself | |
| 1656 */ | |
| 1657 static Lisp_Object | |
| 1658 bodily_specifier (Lisp_Object spec) | |
| 1659 { | |
| 1660 return (GHOST_SPECIFIER_P (XSPECIFIER (spec)) | |
| 1661 ? XSPECIFIER(spec)->magic_parent : spec); | |
| 1662 } | |
| 1663 | |
| 1664 /* Signal error if (specifier SPEC is read-only. | |
| 1665 Read only are ghost specifiers unless Vunlock_ghost_specifiers is | |
| 1666 non-nil. All other specifiers are read-write. | |
| 1667 */ | |
| 1668 static void | |
| 1669 check_modifiable_specifier (Lisp_Object spec) | |
| 1670 { | |
| 1671 if (NILP (Vunlock_ghost_specifiers) | |
| 1672 && GHOST_SPECIFIER_P (XSPECIFIER (spec))) | |
| 563 | 1673 signal_error (Qsetting_constant, |
| 1674 "Attempt to modify read-only specifier", | |
| 1675 spec); | |
| 428 | 1676 } |
| 1677 | |
| 1678 int | |
| 1679 unlock_ghost_specifiers_protected (void) | |
| 1680 { | |
| 853 | 1681 return internal_bind_lisp_object (&Vunlock_ghost_specifiers, Qt); |
| 428 | 1682 } |
| 1683 | |
| 1684 /* This gets hit so much that the function call overhead had a | |
| 1685 measurable impact (according to Quantify). #### We should figure | |
| 1686 out the frequency with which this is called with the various types | |
| 1687 and reorder the check accordingly. */ | |
| 1688 #define SPECIFIER_GET_SPEC_LIST(specifier, type) \ | |
| 3659 | 1689 (type == LOCALE_GLOBAL ? &(XSPECIFIER (specifier)->global_specs) : \ |
| 1690 type == LOCALE_DEVICE ? &(XSPECIFIER (specifier)->device_specs) : \ | |
| 1691 type == LOCALE_FRAME ? &(XSPECIFIER (specifier)->frame_specs) : \ | |
| 1692 type == LOCALE_WINDOW ? &(XWEAK_LIST_LIST \ | |
| 1693 (XSPECIFIER (specifier)->window_specs)) : \ | |
| 1694 type == LOCALE_BUFFER ? &(XSPECIFIER (specifier)->buffer_specs) : \ | |
| 1695 0) | |
| 428 | 1696 |
| 1697 static Lisp_Object * | |
| 1698 specifier_get_inst_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1699 enum spec_locale_type type) | |
| 1700 { | |
| 1701 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1702 Lisp_Object specification; | |
| 1703 | |
| 1704 if (type == LOCALE_GLOBAL) | |
| 1705 return spec_list; | |
| 1706 /* Calling assq_no_quit when it is just going to return nil anyhow | |
| 1707 is extremely expensive. So sayeth Quantify. */ | |
| 1708 if (!CONSP (*spec_list)) | |
| 1709 return 0; | |
| 1710 specification = assq_no_quit (locale, *spec_list); | |
| 1711 if (NILP (specification)) | |
| 1712 return 0; | |
| 1713 return &XCDR (specification); | |
| 1714 } | |
| 1715 | |
| 1716 /* For the given INST_LIST, return a new INST_LIST containing all elements | |
| 1717 where TAG-SET matches the element's tag set. EXACT_P indicates whether | |
| 1718 the match must be exact (as opposed to a subset). SHORT_P indicates | |
| 1719 that the short form (for `specifier-specs') should be returned if | |
| 1720 possible. If COPY_TREE_P, `copy-tree' is used to ensure that no | |
| 1721 elements of the new list are shared with the initial list. | |
| 1722 */ | |
| 1723 | |
| 1724 static Lisp_Object | |
| 1725 specifier_process_inst_list (Lisp_Object inst_list, | |
| 1726 Lisp_Object tag_set, int exact_p, | |
| 1727 int short_p, int copy_tree_p) | |
| 1728 { | |
| 1729 Lisp_Object retval = Qnil; | |
| 1730 Lisp_Object rest; | |
| 1731 struct gcpro gcpro1; | |
| 1732 | |
| 1733 GCPRO1 (retval); | |
| 1734 LIST_LOOP (rest, inst_list) | |
| 1735 { | |
| 1736 Lisp_Object tagged_inst = XCAR (rest); | |
| 1737 Lisp_Object tagged_inst_tag = XCAR (tagged_inst); | |
| 1738 if (tag_sets_match_p (tag_set, tagged_inst_tag, exact_p)) | |
| 1739 { | |
| 1740 if (short_p && NILP (tagged_inst_tag)) | |
| 1741 retval = Fcons (copy_tree_p ? | |
| 1742 Fcopy_tree (XCDR (tagged_inst), Qt) : | |
| 1743 XCDR (tagged_inst), | |
| 1744 retval); | |
| 1745 else | |
| 1746 retval = Fcons (copy_tree_p ? Fcopy_tree (tagged_inst, Qt) : | |
| 1747 tagged_inst, retval); | |
| 1748 } | |
| 1749 } | |
| 1750 retval = Fnreverse (retval); | |
| 1751 UNGCPRO; | |
| 1752 /* If there is a single instantiator and the short form is | |
| 1753 requested, return just the instantiator (rather than a one-element | |
| 1754 list of it) unless it is nil (so that it can be distinguished from | |
| 1755 no instantiators at all). */ | |
| 1756 if (short_p && CONSP (retval) && !NILP (XCAR (retval)) && | |
| 1757 NILP (XCDR (retval))) | |
| 1758 return XCAR (retval); | |
| 1759 else | |
| 1760 return retval; | |
| 1761 } | |
| 1762 | |
| 1763 static Lisp_Object | |
| 1764 specifier_get_external_inst_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1765 enum spec_locale_type type, | |
| 1766 Lisp_Object tag_set, int exact_p, | |
| 1767 int short_p, int copy_tree_p) | |
| 1768 { | |
| 1769 Lisp_Object *inst_list = specifier_get_inst_list (specifier, locale, | |
| 1770 type); | |
| 1771 if (!inst_list || NILP (*inst_list)) | |
| 1772 { | |
| 2953 | 1773 /* nil for *inst_list should only occur in `global' */ |
| 428 | 1774 assert (!inst_list || EQ (locale, Qglobal)); |
| 1775 return Qnil; | |
| 1776 } | |
| 1777 | |
| 1778 return specifier_process_inst_list (*inst_list, tag_set, exact_p, | |
| 1779 short_p, copy_tree_p); | |
| 1780 } | |
| 1781 | |
| 1782 static Lisp_Object | |
| 1783 specifier_get_external_spec_list (Lisp_Object specifier, | |
| 1784 enum spec_locale_type type, | |
| 1785 Lisp_Object tag_set, int exact_p) | |
| 1786 { | |
| 1787 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1788 Lisp_Object retval = Qnil; | |
| 1789 Lisp_Object rest; | |
| 1790 struct gcpro gcpro1; | |
| 1791 | |
| 1792 assert (type != LOCALE_GLOBAL); | |
| 1793 /* We're about to let stuff go external; make sure there aren't | |
| 1794 any dead objects */ | |
| 1795 *spec_list = cleanup_assoc_list (*spec_list); | |
| 1796 | |
| 1797 GCPRO1 (retval); | |
| 1798 LIST_LOOP (rest, *spec_list) | |
| 1799 { | |
| 1800 Lisp_Object spec = XCAR (rest); | |
| 1801 Lisp_Object inst_list = | |
| 1802 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 1); | |
| 1803 if (!NILP (inst_list)) | |
| 1804 retval = Fcons (Fcons (XCAR (spec), inst_list), retval); | |
| 1805 } | |
| 1806 RETURN_UNGCPRO (Fnreverse (retval)); | |
| 1807 } | |
| 1808 | |
| 1809 static Lisp_Object * | |
| 1810 specifier_new_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 1811 enum spec_locale_type type) | |
| 1812 { | |
| 1813 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1814 Lisp_Object new_spec = Fcons (locale, Qnil); | |
| 1815 assert (type != LOCALE_GLOBAL); | |
| 1816 *spec_list = Fcons (new_spec, *spec_list); | |
| 1817 return &XCDR (new_spec); | |
| 1818 } | |
| 1819 | |
| 1820 /* For the given INST_LIST, return a new list comprised of elements | |
| 1821 where TAG_SET does not match the element's tag set. This operation | |
| 1822 is destructive. */ | |
| 1823 | |
| 1824 static Lisp_Object | |
| 1825 specifier_process_remove_inst_list (Lisp_Object inst_list, | |
| 1826 Lisp_Object tag_set, int exact_p, | |
| 1827 int *was_removed) | |
| 1828 { | |
| 1829 Lisp_Object prev = Qnil, rest; | |
| 1830 | |
| 1831 *was_removed = 0; | |
| 1832 | |
| 1833 LIST_LOOP (rest, inst_list) | |
| 1834 { | |
| 1835 if (tag_sets_match_p (tag_set, XCAR (XCAR (rest)), exact_p)) | |
| 1836 { | |
| 1837 /* time to remove. */ | |
| 1838 *was_removed = 1; | |
| 1839 if (NILP (prev)) | |
| 1840 inst_list = XCDR (rest); | |
| 1841 else | |
| 1842 XCDR (prev) = XCDR (rest); | |
| 1843 } | |
| 1844 else | |
| 1845 prev = rest; | |
| 1846 } | |
| 1847 | |
| 1848 return inst_list; | |
| 1849 } | |
| 1850 | |
| 1851 static void | |
| 1852 specifier_remove_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 1853 enum spec_locale_type type, | |
| 1854 Lisp_Object tag_set, int exact_p) | |
| 1855 { | |
| 1856 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1857 Lisp_Object assoc; | |
| 1858 int was_removed; | |
| 1859 | |
| 1860 if (type == LOCALE_GLOBAL) | |
| 1861 *spec_list = specifier_process_remove_inst_list (*spec_list, tag_set, | |
| 1862 exact_p, &was_removed); | |
| 1863 else | |
| 1864 { | |
| 1865 assoc = assq_no_quit (locale, *spec_list); | |
| 1866 if (NILP (assoc)) | |
| 1867 /* this locale is not found. */ | |
| 1868 return; | |
| 1869 XCDR (assoc) = specifier_process_remove_inst_list (XCDR (assoc), | |
| 1870 tag_set, exact_p, | |
| 1871 &was_removed); | |
| 1872 if (NILP (XCDR (assoc))) | |
| 1873 /* no inst-pairs left; remove this locale entirely. */ | |
| 1874 *spec_list = remassq_no_quit (locale, *spec_list); | |
| 1875 } | |
| 1876 | |
| 1877 if (was_removed) | |
| 1878 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change, | |
| 1879 (bodily_specifier (specifier), locale)); | |
| 1880 } | |
| 1881 | |
| 1882 static void | |
| 1883 specifier_remove_locale_type (Lisp_Object specifier, | |
| 1884 enum spec_locale_type type, | |
| 1885 Lisp_Object tag_set, int exact_p) | |
| 1886 { | |
| 1887 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1888 Lisp_Object prev = Qnil, rest; | |
| 1889 | |
| 1890 assert (type != LOCALE_GLOBAL); | |
| 1891 LIST_LOOP (rest, *spec_list) | |
| 1892 { | |
| 1893 int was_removed; | |
| 1894 int remove_spec = 0; | |
| 1895 Lisp_Object spec = XCAR (rest); | |
| 1896 | |
| 1897 /* There may be dead objects floating around */ | |
| 1898 /* remember, dead windows can become alive again. */ | |
| 1899 if (!WINDOWP (XCAR (spec)) && object_dead_p (XCAR (spec))) | |
| 1900 { | |
| 1901 remove_spec = 1; | |
| 1902 was_removed = 0; | |
| 1903 } | |
| 1904 else | |
| 1905 { | |
| 1906 XCDR (spec) = specifier_process_remove_inst_list (XCDR (spec), | |
| 1907 tag_set, exact_p, | |
| 1908 &was_removed); | |
| 1909 if (NILP (XCDR (spec))) | |
| 1910 remove_spec = 1; | |
| 1911 } | |
| 1912 | |
| 1913 if (remove_spec) | |
| 1914 { | |
| 1915 if (NILP (prev)) | |
| 1916 *spec_list = XCDR (rest); | |
| 1917 else | |
| 1918 XCDR (prev) = XCDR (rest); | |
| 1919 } | |
| 1920 else | |
| 1921 prev = rest; | |
| 1922 | |
| 1923 if (was_removed) | |
| 1924 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change, | |
| 1925 (bodily_specifier (specifier), XCAR (spec))); | |
| 1926 } | |
| 1927 } | |
| 1928 | |
| 1929 /* NEW_LIST is going to be added to INST_LIST, with add method ADD_METH. | |
| 1930 Frob INST_LIST according to ADD_METH. No need to call an after-change | |
| 1931 function; the calling function will do this. Return either SPEC_PREPEND | |
| 1932 or SPEC_APPEND, indicating whether to prepend or append the NEW_LIST. */ | |
| 1933 | |
| 1934 static enum spec_add_meth | |
| 1935 handle_multiple_add_insts (Lisp_Object *inst_list, | |
| 1936 Lisp_Object new_list, | |
| 1937 enum spec_add_meth add_meth) | |
| 1938 { | |
| 1939 switch (add_meth) | |
| 1940 { | |
| 1941 case SPEC_REMOVE_TAG_SET_APPEND: | |
| 1942 add_meth = SPEC_APPEND; | |
| 1943 goto remove_tag_set; | |
| 1944 case SPEC_REMOVE_TAG_SET_PREPEND: | |
| 1945 add_meth = SPEC_PREPEND; | |
| 1946 remove_tag_set: | |
| 1947 { | |
| 1948 Lisp_Object rest; | |
| 1949 | |
| 1950 LIST_LOOP (rest, new_list) | |
| 1951 { | |
| 1952 Lisp_Object canontag = canonicalize_tag_set (XCAR (XCAR (rest))); | |
| 1953 struct gcpro gcpro1; | |
| 1954 | |
| 1955 GCPRO1 (canontag); | |
| 1956 /* pull out all elements from the existing list with the | |
| 1957 same tag as any tags in NEW_LIST. */ | |
| 1958 *inst_list = remassoc_no_quit (canontag, *inst_list); | |
| 1959 UNGCPRO; | |
| 1960 } | |
| 1961 } | |
| 1962 return add_meth; | |
| 1963 case SPEC_REMOVE_LOCALE: | |
| 1964 *inst_list = Qnil; | |
| 1965 return SPEC_PREPEND; | |
| 1966 case SPEC_APPEND: | |
| 1967 return add_meth; | |
| 1968 default: | |
| 1969 return SPEC_PREPEND; | |
| 1970 } | |
| 1971 } | |
| 1972 | |
| 1973 /* Given a LOCALE and INST_LIST that is going to be added to SPECIFIER, | |
| 1974 copy, canonicalize, and call the going_to_add methods as necessary | |
| 1975 to produce a new list that is the one that really will be added | |
| 1976 to the specifier. */ | |
| 1977 | |
| 1978 static Lisp_Object | |
| 1979 build_up_processed_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1980 Lisp_Object inst_list) | |
| 1981 { | |
| 1982 /* The return value of this function must be GCPRO'd. */ | |
| 1983 Lisp_Object rest, list_to_build_up = Qnil; | |
| 440 | 1984 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 1985 struct gcpro gcpro1; |
| 1986 | |
| 1987 GCPRO1 (list_to_build_up); | |
| 1988 LIST_LOOP (rest, inst_list) | |
| 1989 { | |
| 1990 Lisp_Object tag_set = XCAR (XCAR (rest)); | |
| 1991 Lisp_Object sub_inst_list = Qnil; | |
| 434 | 1992 Lisp_Object instantiator; |
| 428 | 1993 struct gcpro ngcpro1, ngcpro2; |
| 1994 | |
| 434 | 1995 if (HAS_SPECMETH_P (sp, copy_instantiator)) |
| 1996 instantiator = SPECMETH (sp, copy_instantiator, | |
| 1997 (XCDR (XCAR (rest)))); | |
| 1998 else | |
| 1999 instantiator = Fcopy_tree (XCDR (XCAR (rest)), Qt); | |
| 2000 | |
| 428 | 2001 NGCPRO2 (instantiator, sub_inst_list); |
| 2002 /* call the will-add method; it may GC */ | |
| 2003 sub_inst_list = HAS_SPECMETH_P (sp, going_to_add) ? | |
| 2004 SPECMETH (sp, going_to_add, | |
| 2005 (bodily_specifier (specifier), locale, | |
| 2006 tag_set, instantiator)) : | |
| 2007 Qt; | |
| 2008 if (EQ (sub_inst_list, Qt)) | |
| 2009 /* no change here. */ | |
| 2010 sub_inst_list = list1 (Fcons (canonicalize_tag_set (tag_set), | |
| 2011 instantiator)); | |
| 2012 else | |
| 2013 { | |
| 2014 /* now canonicalize all the tag sets in the new objects */ | |
| 2015 Lisp_Object rest2; | |
| 2016 LIST_LOOP (rest2, sub_inst_list) | |
| 2017 XCAR (XCAR (rest2)) = canonicalize_tag_set (XCAR (XCAR (rest2))); | |
| 2018 } | |
| 2019 | |
| 2020 list_to_build_up = nconc2 (sub_inst_list, list_to_build_up); | |
| 2021 NUNGCPRO; | |
| 2022 } | |
| 2023 | |
| 2024 RETURN_UNGCPRO (Fnreverse (list_to_build_up)); | |
| 2025 } | |
| 2026 | |
| 2027 /* Add a specification (locale and instantiator list) to a specifier. | |
| 2028 ADD_METH specifies what to do with existing specifications in the | |
| 2029 specifier, and is an enum that corresponds to the values in | |
| 2030 `add-spec-to-specifier'. The calling routine is responsible for | |
| 2031 validating LOCALE and INST-LIST, but the tag-sets in INST-LIST | |
| 2032 do not need to be canonicalized. */ | |
| 2033 | |
| 3659 | 2034 /* #### I really need to rethink the after-change |
| 2035 functions to make them easier to use and more efficient. */ | |
| 428 | 2036 |
| 2037 static void | |
| 2038 specifier_add_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 2039 Lisp_Object inst_list, enum spec_add_meth add_meth) | |
| 2040 { | |
| 440 | 2041 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2042 enum spec_locale_type type = locale_type_from_locale (locale); |
| 2043 Lisp_Object *orig_inst_list, tem; | |
| 2044 Lisp_Object list_to_build_up = Qnil; | |
| 2045 struct gcpro gcpro1; | |
| 2046 | |
| 1015 | 2047 if (NILP (inst_list)) |
| 2048 return; | |
| 2049 | |
| 428 | 2050 GCPRO1 (list_to_build_up); |
| 2051 list_to_build_up = build_up_processed_list (specifier, locale, inst_list); | |
| 2052 /* Now handle REMOVE_LOCALE_TYPE and REMOVE_ALL. These are the | |
| 2053 add-meth types that affect locales other than this one. */ | |
| 2054 if (add_meth == SPEC_REMOVE_LOCALE_TYPE) | |
| 2055 specifier_remove_locale_type (specifier, type, Qnil, 0); | |
| 2056 else if (add_meth == SPEC_REMOVE_ALL) | |
| 2057 { | |
| 2058 specifier_remove_locale_type (specifier, LOCALE_BUFFER, Qnil, 0); | |
| 2059 specifier_remove_locale_type (specifier, LOCALE_WINDOW, Qnil, 0); | |
| 2060 specifier_remove_locale_type (specifier, LOCALE_FRAME, Qnil, 0); | |
| 2061 specifier_remove_locale_type (specifier, LOCALE_DEVICE, Qnil, 0); | |
| 2062 specifier_remove_spec (specifier, Qglobal, LOCALE_GLOBAL, Qnil, 0); | |
| 2063 } | |
| 2064 | |
| 2065 orig_inst_list = specifier_get_inst_list (specifier, locale, type); | |
| 2066 if (!orig_inst_list) | |
| 2067 orig_inst_list = specifier_new_spec (specifier, locale, type); | |
| 2068 add_meth = handle_multiple_add_insts (orig_inst_list, list_to_build_up, | |
| 2069 add_meth); | |
| 2070 | |
| 2071 if (add_meth == SPEC_PREPEND) | |
| 2072 tem = nconc2 (list_to_build_up, *orig_inst_list); | |
| 2073 else if (add_meth == SPEC_APPEND) | |
| 2074 tem = nconc2 (*orig_inst_list, list_to_build_up); | |
| 2075 else | |
| 442 | 2076 { |
| 2500 | 2077 ABORT (); |
| 442 | 2078 tem = Qnil; |
| 2079 } | |
| 428 | 2080 |
| 2081 *orig_inst_list = tem; | |
| 2082 | |
| 2083 UNGCPRO; | |
| 2084 | |
| 2085 /* call the after-change method */ | |
| 2086 MAYBE_SPECMETH (sp, after_change, | |
| 2087 (bodily_specifier (specifier), locale)); | |
| 2088 } | |
| 2089 | |
| 2090 static void | |
| 2091 specifier_copy_spec (Lisp_Object specifier, Lisp_Object dest, | |
| 2092 Lisp_Object locale, enum spec_locale_type type, | |
| 2093 Lisp_Object tag_set, int exact_p, | |
| 2094 enum spec_add_meth add_meth) | |
| 2095 { | |
| 2096 Lisp_Object inst_list = | |
| 2097 specifier_get_external_inst_list (specifier, locale, type, tag_set, | |
| 2098 exact_p, 0, 0); | |
| 2099 specifier_add_spec (dest, locale, inst_list, add_meth); | |
| 2100 } | |
| 2101 | |
| 2102 static void | |
| 2103 specifier_copy_locale_type (Lisp_Object specifier, Lisp_Object dest, | |
| 2104 enum spec_locale_type type, | |
| 2105 Lisp_Object tag_set, int exact_p, | |
| 2106 enum spec_add_meth add_meth) | |
| 2107 { | |
| 2108 Lisp_Object *src_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 2109 Lisp_Object rest; | |
| 2110 | |
| 2111 /* This algorithm is O(n^2) in running time. | |
| 2112 It's certainly possible to implement an O(n log n) algorithm, | |
| 2113 but I doubt there's any need to. */ | |
| 2114 | |
| 2115 LIST_LOOP (rest, *src_list) | |
| 2116 { | |
| 2117 Lisp_Object spec = XCAR (rest); | |
| 2118 /* There may be dead objects floating around */ | |
| 2119 /* remember, dead windows can become alive again. */ | |
| 2120 if (WINDOWP (XCAR (spec)) || !object_dead_p (XCAR (spec))) | |
| 2121 specifier_add_spec | |
| 2122 (dest, XCAR (spec), | |
| 2123 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 0), | |
| 2124 add_meth); | |
| 2125 } | |
| 2126 } | |
| 2127 | |
| 2128 /* map MAPFUN over the locales in SPECIFIER that are given in LOCALE. | |
| 2129 CLOSURE is passed unchanged to MAPFUN. LOCALE can be one of | |
| 2130 | |
| 3659 | 2131 -- nil (same as `all') |
| 2132 -- a single locale, locale type, or `all' | |
| 2133 -- a list of locales, locale types, and/or `all' | |
| 2953 | 2134 |
| 2135 MAPFUN is called for each locale and locale type given; for `all', | |
| 2136 it is called for the locale `global' and for the four possible | |
| 428 | 2137 locale types. In each invocation, either LOCALE will be a locale |
| 2138 and LOCALE_TYPE will be the locale type of this locale, | |
| 2139 or LOCALE will be nil and LOCALE_TYPE will be a locale type. | |
| 2140 If MAPFUN ever returns non-zero, the mapping is halted and the | |
| 2141 value returned is returned from map_specifier(). Otherwise, the | |
| 2142 mapping proceeds to the end and map_specifier() returns 0. | |
| 3659 | 2143 */ |
| 428 | 2144 |
| 2145 static int | |
| 2146 map_specifier (Lisp_Object specifier, Lisp_Object locale, | |
| 2147 int (*mapfun) (Lisp_Object specifier, | |
| 2148 Lisp_Object locale, | |
| 2149 enum spec_locale_type locale_type, | |
| 2150 Lisp_Object tag_set, | |
| 2151 int exact_p, | |
| 2152 void *closure), | |
| 2153 Lisp_Object tag_set, Lisp_Object exact_p, | |
| 2154 void *closure) | |
| 2155 { | |
| 2156 int retval = 0; | |
| 2157 Lisp_Object rest; | |
| 2158 struct gcpro gcpro1, gcpro2; | |
| 2159 | |
| 2160 GCPRO2 (tag_set, locale); | |
| 2161 locale = decode_locale_list (locale); | |
| 2162 tag_set = decode_specifier_tag_set (tag_set); | |
| 2163 tag_set = canonicalize_tag_set (tag_set); | |
| 2164 | |
| 2165 LIST_LOOP (rest, locale) | |
| 2166 { | |
| 2167 Lisp_Object theloc = XCAR (rest); | |
| 2168 if (!NILP (Fvalid_specifier_locale_p (theloc))) | |
| 2169 { | |
| 2170 retval = (*mapfun) (specifier, theloc, | |
| 2171 locale_type_from_locale (theloc), | |
| 2172 tag_set, !NILP (exact_p), closure); | |
| 2173 if (retval) | |
| 2174 break; | |
| 2175 } | |
| 2176 else if (!NILP (Fvalid_specifier_locale_type_p (theloc))) | |
| 2177 { | |
| 2178 retval = (*mapfun) (specifier, Qnil, | |
| 2179 decode_locale_type (theloc), tag_set, | |
| 2180 !NILP (exact_p), closure); | |
| 2181 if (retval) | |
| 2182 break; | |
| 2183 } | |
| 2184 else | |
| 2185 { | |
| 2186 assert (EQ (theloc, Qall)); | |
| 2187 retval = (*mapfun) (specifier, Qnil, LOCALE_BUFFER, tag_set, | |
| 2188 !NILP (exact_p), closure); | |
| 2189 if (retval) | |
| 2190 break; | |
| 2191 retval = (*mapfun) (specifier, Qnil, LOCALE_WINDOW, tag_set, | |
| 2192 !NILP (exact_p), closure); | |
| 2193 if (retval) | |
| 2194 break; | |
| 2195 retval = (*mapfun) (specifier, Qnil, LOCALE_FRAME, tag_set, | |
| 2196 !NILP (exact_p), closure); | |
| 2197 if (retval) | |
| 2198 break; | |
| 2199 retval = (*mapfun) (specifier, Qnil, LOCALE_DEVICE, tag_set, | |
| 2200 !NILP (exact_p), closure); | |
| 2201 if (retval) | |
| 2202 break; | |
| 2203 retval = (*mapfun) (specifier, Qglobal, LOCALE_GLOBAL, tag_set, | |
| 2204 !NILP (exact_p), closure); | |
| 2205 if (retval) | |
| 2206 break; | |
| 2207 } | |
| 2208 } | |
| 2209 | |
| 2210 UNGCPRO; | |
| 2211 return retval; | |
| 2212 } | |
| 2213 | |
| 2214 DEFUN ("add-spec-to-specifier", Fadd_spec_to_specifier, 2, 5, 0, /* | |
| 2215 Add a specification to SPECIFIER. | |
| 2216 The specification maps from LOCALE (which should be a window, buffer, | |
| 2953 | 2217 frame, device, or `global', and defaults to `global') to INSTANTIATOR, |
| 428 | 2218 whose allowed values depend on the type of the specifier. Optional |
| 2219 argument TAG-SET limits the instantiator to apply only to the specified | |
| 2220 tag set, which should be a list of tags all of which must match the | |
| 2221 device being instantiated over (tags are a device type, a device class, | |
| 2222 or tags defined with `define-specifier-tag'). Specifying a single | |
| 2223 symbol for TAG-SET is equivalent to specifying a one-element list | |
| 2224 containing that symbol. Optional argument HOW-TO-ADD specifies what to | |
| 2225 do if there are already specifications in the specifier. | |
| 2226 It should be one of | |
| 2227 | |
| 2953 | 2228 `prepend' Put at the beginning of the current list of |
| 428 | 2229 instantiators for LOCALE. |
| 2953 | 2230 `append' Add to the end of the current list of |
| 428 | 2231 instantiators for LOCALE. |
| 2953 | 2232 `remove-tag-set-prepend' (this is the default) |
| 428 | 2233 Remove any existing instantiators whose tag set is |
| 2234 the same as TAG-SET; then put the new instantiator | |
| 2235 at the beginning of the current list. ("Same tag | |
| 2236 set" means that they contain the same elements. | |
| 2237 The order may be different.) | |
| 2953 | 2238 `remove-tag-set-append' |
| 428 | 2239 Remove any existing instantiators whose tag set is |
| 2240 the same as TAG-SET; then put the new instantiator | |
| 2241 at the end of the current list. | |
| 2953 | 2242 `remove-locale' Remove all previous instantiators for this locale |
| 428 | 2243 before adding the new spec. |
| 2953 | 2244 `remove-locale-type' Remove all specifications for all locales of the |
| 428 | 2245 same type as LOCALE (this includes LOCALE itself) |
| 2246 before adding the new spec. | |
| 2953 | 2247 `remove-all' Remove all specifications from the specifier |
| 428 | 2248 before adding the new spec. |
| 2249 | |
| 2250 You can retrieve the specifications for a particular locale or locale type | |
| 2251 with the function `specifier-spec-list' or `specifier-specs'. | |
| 2252 */ | |
| 2253 (specifier, instantiator, locale, tag_set, how_to_add)) | |
| 2254 { | |
| 2255 enum spec_add_meth add_meth; | |
| 2256 Lisp_Object inst_list; | |
| 2257 struct gcpro gcpro1; | |
| 2258 | |
| 2259 CHECK_SPECIFIER (specifier); | |
| 2260 check_modifiable_specifier (specifier); | |
| 2261 | |
| 2262 locale = decode_locale (locale); | |
| 2263 check_valid_instantiator (instantiator, | |
| 2264 decode_specifier_type | |
| 2265 (Fspecifier_type (specifier), ERROR_ME), | |
| 2266 ERROR_ME); | |
| 2267 /* tag_set might be newly-created material, but it's part of inst_list | |
| 2268 so is properly GC-protected. */ | |
| 2269 tag_set = decode_specifier_tag_set (tag_set); | |
| 2270 add_meth = decode_how_to_add_specification (how_to_add); | |
| 2271 | |
| 2272 inst_list = list1 (Fcons (tag_set, instantiator)); | |
| 2273 GCPRO1 (inst_list); | |
| 2274 specifier_add_spec (specifier, locale, inst_list, add_meth); | |
| 2275 recompute_cached_specifier_everywhere (specifier); | |
| 2276 RETURN_UNGCPRO (Qnil); | |
| 2277 } | |
| 2278 | |
| 2279 DEFUN ("add-spec-list-to-specifier", Fadd_spec_list_to_specifier, 2, 3, 0, /* | |
| 444 | 2280 Add SPEC-LIST (a list of specifications) to SPECIFIER. |
| 2281 The format of SPEC-LIST is | |
| 428 | 2282 |
| 2283 ((LOCALE (TAG-SET . INSTANTIATOR) ...) ...) | |
| 2284 | |
| 2285 where | |
| 2953 | 2286 LOCALE := a window, a buffer, a frame, a device, or `global' |
| 428 | 2287 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
|
2288 is a symbol |
| 428 | 2289 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
|
2290 (see `valid-console-type-p'), or a tag defined with |
|
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2291 `define-specifier-tag' |
| 428 | 2292 INSTANTIATOR := format determined by the type of specifier |
| 2293 | |
| 2294 The pair (TAG-SET . INSTANTIATOR) is called an `inst-pair'. | |
| 2295 A list of inst-pairs is called an `inst-list'. | |
| 2296 The pair (LOCALE . INST-LIST) is called a `specification' or `spec'. | |
| 2297 A spec-list, then, can be viewed as a list of specifications. | |
| 2298 | |
| 2299 HOW-TO-ADD specifies how to combine the new specifications with | |
| 2300 the existing ones, and has the same semantics as for | |
| 2301 `add-spec-to-specifier'. | |
| 2302 | |
| 2303 In many circumstances, the higher-level function `set-specifier' is | |
| 2304 more convenient and should be used instead. | |
| 2305 */ | |
| 2306 (specifier, spec_list, how_to_add)) | |
| 2307 { | |
| 2308 enum spec_add_meth add_meth; | |
| 2309 Lisp_Object rest; | |
| 2310 | |
| 2311 CHECK_SPECIFIER (specifier); | |
| 2312 check_modifiable_specifier (specifier); | |
| 2313 | |
| 2314 check_valid_spec_list (spec_list, | |
| 2315 decode_specifier_type | |
| 2316 (Fspecifier_type (specifier), ERROR_ME), | |
| 2317 ERROR_ME); | |
| 2318 add_meth = decode_how_to_add_specification (how_to_add); | |
| 2319 | |
| 2320 LIST_LOOP (rest, spec_list) | |
| 2321 { | |
| 2322 /* Placating the GCC god. */ | |
| 2323 Lisp_Object specification = XCAR (rest); | |
| 2324 Lisp_Object locale = XCAR (specification); | |
| 2325 Lisp_Object inst_list = XCDR (specification); | |
| 2326 | |
| 2327 specifier_add_spec (specifier, locale, inst_list, add_meth); | |
| 2328 } | |
| 2329 recompute_cached_specifier_everywhere (specifier); | |
| 2330 return Qnil; | |
| 2331 } | |
| 2332 | |
| 2333 void | |
| 2334 add_spec_to_ghost_specifier (Lisp_Object specifier, Lisp_Object instantiator, | |
| 2335 Lisp_Object locale, Lisp_Object tag_set, | |
| 2336 Lisp_Object how_to_add) | |
| 2337 { | |
| 2338 int depth = unlock_ghost_specifiers_protected (); | |
| 2339 Fadd_spec_to_specifier (XSPECIFIER(specifier)->fallback, | |
| 2340 instantiator, locale, tag_set, how_to_add); | |
| 771 | 2341 unbind_to (depth); |
| 428 | 2342 } |
| 2343 | |
| 2344 struct specifier_spec_list_closure | |
| 2345 { | |
| 2346 Lisp_Object head, tail; | |
| 2347 }; | |
| 2348 | |
| 2349 static int | |
| 2350 specifier_spec_list_mapfun (Lisp_Object specifier, | |
| 2351 Lisp_Object locale, | |
| 2352 enum spec_locale_type locale_type, | |
| 2353 Lisp_Object tag_set, | |
| 2354 int exact_p, | |
| 2355 void *closure) | |
| 2356 { | |
| 2357 struct specifier_spec_list_closure *cl = | |
| 2358 (struct specifier_spec_list_closure *) closure; | |
| 2359 Lisp_Object partial; | |
| 2360 | |
| 2361 if (NILP (locale)) | |
| 2362 partial = specifier_get_external_spec_list (specifier, | |
| 2363 locale_type, | |
| 2364 tag_set, exact_p); | |
| 2365 else | |
| 2366 { | |
| 2367 partial = specifier_get_external_inst_list (specifier, locale, | |
| 2368 locale_type, tag_set, | |
| 2369 exact_p, 0, 1); | |
| 2370 if (!NILP (partial)) | |
| 2371 partial = list1 (Fcons (locale, partial)); | |
| 2372 } | |
| 2373 if (NILP (partial)) | |
| 2374 return 0; | |
| 2375 | |
| 2376 /* tack on the new list */ | |
| 2377 if (NILP (cl->tail)) | |
| 2378 cl->head = cl->tail = partial; | |
| 2379 else | |
| 2380 XCDR (cl->tail) = partial; | |
| 2381 /* find the new tail */ | |
| 2382 while (CONSP (XCDR (cl->tail))) | |
| 2383 cl->tail = XCDR (cl->tail); | |
| 2384 return 0; | |
| 2385 } | |
| 2386 | |
| 2387 /* For the given SPECIFIER create and return a list of all specs | |
| 2388 contained within it, subject to LOCALE. If LOCALE is a locale, only | |
| 2389 specs in that locale will be returned. If LOCALE is a locale type, | |
| 2390 all specs in all locales of that type will be returned. If LOCALE is | |
| 2391 nil, all specs will be returned. This always copies lists and never | |
| 2392 returns the actual lists, because we do not want someone manipulating | |
| 2393 the actual objects. This may cause a slight loss of potential | |
| 2394 functionality but if we were to allow it then a user could manage to | |
| 2395 violate our assertion that the specs contained in the actual | |
| 2396 specifier lists are all valid. */ | |
| 2397 | |
| 2398 DEFUN ("specifier-spec-list", Fspecifier_spec_list, 1, 4, 0, /* | |
| 2399 Return the spec-list of specifications for SPECIFIER in LOCALE. | |
| 2400 | |
| 2401 If LOCALE is a particular locale (a buffer, window, frame, device, | |
| 2953 | 2402 or `global'), a spec-list consisting of the specification for that |
| 428 | 2403 locale will be returned. |
| 2404 | |
| 2953 | 2405 If LOCALE is a locale type (i.e. `buffer', `window', `frame', or `device'), |
| 428 | 2406 a spec-list of the specifications for all locales of that type will be |
| 2407 returned. | |
| 2408 | |
| 2953 | 2409 If LOCALE is nil or `all', a spec-list of all specifications in SPECIFIER |
| 428 | 2410 will be returned. |
| 2411 | |
| 2953 | 2412 LOCALE can also be a list of locales, locale types, and/or `all'; the |
| 428 | 2413 result is as if `specifier-spec-list' were called on each element of the |
| 2414 list and the results concatenated together. | |
| 2415 | |
| 2416 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2417 subset of (or possibly equal to) the instantiator's tag set are returned. | |
| 2418 \(The default value of nil is a subset of all tag sets, so in this case | |
| 2419 no instantiators will be screened out.) If EXACT-P is non-nil, however, | |
| 2420 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2421 to be returned. | |
| 2422 */ | |
| 3659 | 2423 (specifier, locale, tag_set, exact_p)) |
| 428 | 2424 { |
| 2425 struct specifier_spec_list_closure cl; | |
| 2426 struct gcpro gcpro1, gcpro2; | |
| 2427 | |
| 2428 CHECK_SPECIFIER (specifier); | |
| 2429 cl.head = cl.tail = Qnil; | |
| 2430 GCPRO2 (cl.head, cl.tail); | |
| 2431 map_specifier (specifier, locale, specifier_spec_list_mapfun, | |
| 2432 tag_set, exact_p, &cl); | |
| 2433 UNGCPRO; | |
| 2434 return cl.head; | |
| 2435 } | |
| 2436 | |
| 2437 | |
| 2438 DEFUN ("specifier-specs", Fspecifier_specs, 1, 4, 0, /* | |
| 2439 Return the specification(s) for SPECIFIER in LOCALE. | |
| 2440 | |
| 2441 If LOCALE is a single locale or is a list of one element containing a | |
| 2442 single locale, then a "short form" of the instantiators for that locale | |
| 2443 will be returned. Otherwise, this function is identical to | |
| 2444 `specifier-spec-list'. | |
| 2445 | |
| 2446 The "short form" is designed for readability and not for ease of use | |
| 2447 in Lisp programs, and is as follows: | |
| 2448 | |
| 2449 1. If there is only one instantiator, then an inst-pair (i.e. cons of | |
| 2450 tag and instantiator) will be returned; otherwise a list of | |
| 2451 inst-pairs will be returned. | |
| 2953 | 2452 2. For each inst-pair returned, if the instantiator's tag is `any', |
| 428 | 2453 the tag will be removed and the instantiator itself will be returned |
| 2454 instead of the inst-pair. | |
| 2455 3. If there is only one instantiator, its value is nil, and its tag is | |
| 2953 | 2456 `any', a one-element list containing nil will be returned rather |
| 428 | 2457 than just nil, to distinguish this case from there being no |
| 2458 instantiators at all. | |
| 2459 */ | |
| 2460 (specifier, locale, tag_set, exact_p)) | |
| 2461 { | |
| 2462 if (!NILP (Fvalid_specifier_locale_p (locale)) || | |
| 2463 (CONSP (locale) && !NILP (Fvalid_specifier_locale_p (XCAR (locale))) && | |
| 2464 NILP (XCDR (locale)))) | |
| 2465 { | |
| 2466 struct gcpro gcpro1; | |
| 2467 | |
| 2468 CHECK_SPECIFIER (specifier); | |
| 2469 if (CONSP (locale)) | |
| 2470 locale = XCAR (locale); | |
| 2471 GCPRO1 (tag_set); | |
| 2472 tag_set = decode_specifier_tag_set (tag_set); | |
| 2473 tag_set = canonicalize_tag_set (tag_set); | |
| 2474 RETURN_UNGCPRO | |
| 2475 (specifier_get_external_inst_list (specifier, locale, | |
| 2476 locale_type_from_locale (locale), | |
| 2477 tag_set, !NILP (exact_p), 1, 1)); | |
| 2478 } | |
| 2479 else | |
| 2480 return Fspecifier_spec_list (specifier, locale, tag_set, exact_p); | |
| 2481 } | |
| 2482 | |
| 2483 static int | |
| 2484 remove_specifier_mapfun (Lisp_Object specifier, | |
| 2485 Lisp_Object locale, | |
| 2486 enum spec_locale_type locale_type, | |
| 2487 Lisp_Object tag_set, | |
| 2488 int exact_p, | |
| 2286 | 2489 void *UNUSED (closure)) |
| 428 | 2490 { |
| 2491 if (NILP (locale)) | |
| 2492 specifier_remove_locale_type (specifier, locale_type, tag_set, exact_p); | |
| 2493 else | |
| 2494 specifier_remove_spec (specifier, locale, locale_type, tag_set, exact_p); | |
| 2495 return 0; | |
| 2496 } | |
| 2497 | |
| 2498 DEFUN ("remove-specifier", Fremove_specifier, 1, 4, 0, /* | |
| 2499 Remove specification(s) for SPECIFIER. | |
| 2500 | |
| 2501 If LOCALE is a particular locale (a window, buffer, frame, device, | |
| 2953 | 2502 or `global'), the specification for that locale will be removed. |
| 2503 | |
| 2504 If instead, LOCALE is a locale type (i.e. `window', `buffer', `frame', | |
| 2505 or `device'), the specifications for all locales of that type will be | |
| 428 | 2506 removed. |
| 2507 | |
| 2953 | 2508 If LOCALE is nil or `all', all specifications will be removed. |
| 2509 | |
| 2510 LOCALE can also be a list of locales, locale types, and/or `all'; this | |
| 428 | 2511 is equivalent to calling `remove-specifier' for each of the elements |
| 2512 in the list. | |
| 2513 | |
| 2514 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2515 subset of (or possibly equal to) the instantiator's tag set are removed. | |
| 2516 The default value of nil is a subset of all tag sets, so in this case | |
| 2517 no instantiators will be screened out. If EXACT-P is non-nil, however, | |
| 2518 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2519 to be removed. | |
| 2520 */ | |
| 2521 (specifier, locale, tag_set, exact_p)) | |
| 2522 { | |
| 2523 CHECK_SPECIFIER (specifier); | |
| 2524 check_modifiable_specifier (specifier); | |
| 2525 | |
| 2526 map_specifier (specifier, locale, remove_specifier_mapfun, | |
| 2527 tag_set, exact_p, 0); | |
| 2528 recompute_cached_specifier_everywhere (specifier); | |
| 2529 return Qnil; | |
| 2530 } | |
| 2531 | |
| 2532 void | |
| 2533 remove_ghost_specifier (Lisp_Object specifier, Lisp_Object locale, | |
| 2534 Lisp_Object tag_set, Lisp_Object exact_p) | |
| 2535 { | |
| 2536 int depth = unlock_ghost_specifiers_protected (); | |
| 2537 Fremove_specifier (XSPECIFIER(specifier)->fallback, | |
| 2538 locale, tag_set, exact_p); | |
| 771 | 2539 unbind_to (depth); |
| 428 | 2540 } |
| 2541 | |
| 2542 struct copy_specifier_closure | |
| 2543 { | |
| 2544 Lisp_Object dest; | |
| 2545 enum spec_add_meth add_meth; | |
| 2546 int add_meth_is_nil; | |
| 2547 }; | |
| 2548 | |
| 2549 static int | |
| 2550 copy_specifier_mapfun (Lisp_Object specifier, | |
| 2551 Lisp_Object locale, | |
| 2552 enum spec_locale_type locale_type, | |
| 2553 Lisp_Object tag_set, | |
| 2554 int exact_p, | |
| 2555 void *closure) | |
| 2556 { | |
| 2557 struct copy_specifier_closure *cl = | |
| 2558 (struct copy_specifier_closure *) closure; | |
| 2559 | |
| 2560 if (NILP (locale)) | |
| 2561 specifier_copy_locale_type (specifier, cl->dest, locale_type, | |
| 2562 tag_set, exact_p, | |
| 2563 cl->add_meth_is_nil ? | |
| 2564 SPEC_REMOVE_LOCALE_TYPE : | |
| 2565 cl->add_meth); | |
| 2566 else | |
| 2567 specifier_copy_spec (specifier, cl->dest, locale, locale_type, | |
| 2568 tag_set, exact_p, | |
| 2569 cl->add_meth_is_nil ? SPEC_REMOVE_LOCALE : | |
| 2570 cl->add_meth); | |
| 2571 return 0; | |
| 2572 } | |
| 2573 | |
| 2574 DEFUN ("copy-specifier", Fcopy_specifier, 1, 6, 0, /* | |
| 2575 Copy SPECIFIER to DEST, or create a new one if DEST is nil. | |
| 2576 | |
| 2577 If DEST is nil or omitted, a new specifier will be created and the | |
| 2578 specifications copied into it. Otherwise, the specifications will be | |
| 2579 copied into the existing specifier in DEST. | |
| 2580 | |
| 2953 | 2581 If LOCALE is nil or `all', all specifications will be copied. If LOCALE |
| 428 | 2582 is a particular locale, the specification for that particular locale will |
| 2583 be copied. If LOCALE is a locale type, the specifications for all locales | |
| 2584 of that type will be copied. LOCALE can also be a list of locales, | |
| 2953 | 2585 locale types, and/or `all'; this is equivalent to calling `copy-specifier' |
| 428 | 2586 for each of the elements of the list. See `specifier-spec-list' for more |
| 2587 information about LOCALE. | |
| 2588 | |
| 2589 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2590 subset of (or possibly equal to) the instantiator's tag set are copied. | |
| 2591 The default value of nil is a subset of all tag sets, so in this case | |
| 2592 no instantiators will be screened out. If EXACT-P is non-nil, however, | |
| 2593 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2594 to be copied. | |
| 2595 | |
| 2596 Optional argument HOW-TO-ADD specifies what to do with existing | |
| 2597 specifications in DEST. If nil, then whichever locales or locale types | |
| 2598 are copied will first be completely erased in DEST. Otherwise, it is | |
| 2599 the same as in `add-spec-to-specifier'. | |
| 2600 */ | |
| 2601 (specifier, dest, locale, tag_set, exact_p, how_to_add)) | |
| 2602 { | |
| 2603 struct gcpro gcpro1; | |
| 2604 struct copy_specifier_closure cl; | |
| 2605 | |
| 2606 CHECK_SPECIFIER (specifier); | |
| 2607 if (NILP (how_to_add)) | |
| 2608 cl.add_meth_is_nil = 1; | |
| 2609 else | |
| 2610 cl.add_meth_is_nil = 0; | |
| 2611 cl.add_meth = decode_how_to_add_specification (how_to_add); | |
| 2612 if (NILP (dest)) | |
| 2613 { | |
| 2614 /* #### What about copying the extra data? */ | |
| 2615 dest = make_specifier (XSPECIFIER (specifier)->methods); | |
| 2616 } | |
| 2617 else | |
| 2618 { | |
| 2619 CHECK_SPECIFIER (dest); | |
| 2620 check_modifiable_specifier (dest); | |
| 2621 if (XSPECIFIER (dest)->methods != XSPECIFIER (specifier)->methods) | |
| 3659 | 2622 invalid_argument ("Specifiers not of same type", Qunbound); |
| 428 | 2623 } |
| 2624 | |
| 2625 cl.dest = dest; | |
| 2626 GCPRO1 (dest); | |
| 2627 map_specifier (specifier, locale, copy_specifier_mapfun, | |
| 2628 tag_set, exact_p, &cl); | |
| 2629 UNGCPRO; | |
| 2630 recompute_cached_specifier_everywhere (dest); | |
| 2631 return dest; | |
| 2632 } | |
| 2633 | |
| 2634 | |
| 2635 /************************************************************************/ | |
| 2953 | 2636 /* Instantiation */ |
| 428 | 2637 /************************************************************************/ |
| 2638 | |
| 2639 static Lisp_Object | |
| 2640 call_validate_matchspec_method (Lisp_Object boxed_method, | |
| 2641 Lisp_Object matchspec) | |
| 2642 { | |
| 2643 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (matchspec); | |
| 2644 return Qt; | |
| 2645 } | |
| 2646 | |
| 2647 static Lisp_Object | |
| 2648 check_valid_specifier_matchspec (Lisp_Object matchspec, | |
| 2649 struct specifier_methods *meths, | |
| 578 | 2650 Error_Behavior errb) |
| 428 | 2651 { |
| 2652 if (meths->validate_matchspec_method) | |
| 2653 { | |
| 2654 Lisp_Object retval; | |
| 2655 | |
| 2656 if (ERRB_EQ (errb, ERROR_ME)) | |
| 2657 { | |
| 2658 (meths->validate_matchspec_method) (matchspec); | |
| 2659 retval = Qt; | |
| 2660 } | |
| 2661 else | |
| 2662 { | |
| 2663 Lisp_Object opaque = | |
| 2664 make_opaque_ptr ((void *) meths->validate_matchspec_method); | |
| 2665 struct gcpro gcpro1; | |
| 2666 | |
| 2667 GCPRO1 (opaque); | |
| 2668 retval = call_with_suspended_errors | |
| 2669 ((lisp_fn_t) call_validate_matchspec_method, | |
| 2670 Qnil, Qspecifier, errb, 2, opaque, matchspec); | |
| 2671 | |
| 2672 free_opaque_ptr (opaque); | |
| 2673 UNGCPRO; | |
| 2674 } | |
| 2675 | |
| 2676 return retval; | |
| 2677 } | |
| 2678 else | |
| 2679 { | |
| 563 | 2680 maybe_sferror |
| 428 | 2681 ("Matchspecs not allowed for this specifier type", |
| 2682 intern (meths->name), Qspecifier, errb); | |
| 2683 return Qnil; | |
| 2684 } | |
| 2685 } | |
| 2686 | |
| 442 | 2687 DEFUN ("check-valid-specifier-matchspec", Fcheck_valid_specifier_matchspec, 2, |
| 2688 2, 0, /* | |
| 428 | 2689 Signal an error if MATCHSPEC is invalid for SPECIFIER-TYPE. |
| 2690 See `specifier-matching-instance' for a description of matchspecs. | |
| 2691 */ | |
| 2692 (matchspec, specifier_type)) | |
| 2693 { | |
| 2694 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 2695 ERROR_ME); | |
| 2696 | |
| 2697 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME); | |
| 2698 } | |
| 2699 | |
| 2700 DEFUN ("valid-specifier-matchspec-p", Fvalid_specifier_matchspec_p, 2, 2, 0, /* | |
| 2701 Return non-nil if MATCHSPEC is valid for SPECIFIER-TYPE. | |
| 2702 See `specifier-matching-instance' for a description of matchspecs. | |
| 2703 */ | |
| 2704 (matchspec, specifier_type)) | |
| 2705 { | |
| 2706 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 2707 ERROR_ME); | |
| 2708 | |
| 2709 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME_NOT); | |
| 2710 } | |
| 2711 | |
| 2712 /* This function is purposely not callable from Lisp. If a Lisp | |
| 2713 caller wants to set a fallback, they should just set the | |
| 2714 global value. */ | |
| 2715 | |
| 2716 void | |
| 2717 set_specifier_fallback (Lisp_Object specifier, Lisp_Object fallback) | |
| 2718 { | |
| 440 | 2719 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2720 assert (SPECIFIERP (fallback) || |
| 2721 !NILP (Fvalid_inst_list_p (fallback, Fspecifier_type (specifier)))); | |
| 2722 if (SPECIFIERP (fallback)) | |
| 2723 assert (EQ (Fspecifier_type (specifier), Fspecifier_type (fallback))); | |
| 2724 if (BODILY_SPECIFIER_P (sp)) | |
| 2725 GHOST_SPECIFIER(sp)->fallback = fallback; | |
| 2726 else | |
| 2727 sp->fallback = fallback; | |
| 2728 /* call the after-change method */ | |
| 2729 MAYBE_SPECMETH (sp, after_change, | |
| 2730 (bodily_specifier (specifier), Qfallback)); | |
| 2731 recompute_cached_specifier_everywhere (specifier); | |
| 2732 } | |
| 2733 | |
| 2734 DEFUN ("specifier-fallback", Fspecifier_fallback, 1, 1, 0, /* | |
| 2735 Return the fallback value for SPECIFIER. | |
| 2736 Fallback values are provided by the C code for certain built-in | |
| 2953 | 2737 specifiers to make sure that instantiation won't fail even if all |
| 428 | 2738 specs are removed from the specifier, or to implement simple |
| 2739 inheritance behavior (e.g. this method is used to ensure that | |
| 2953 | 2740 faces other than `default' inherit their attributes from `default'). |
| 428 | 2741 By design, you cannot change the fallback value, and specifiers |
| 2742 created with `make-specifier' will never have a fallback (although | |
| 2743 a similar, Lisp-accessible capability may be provided in the future | |
| 2744 to allow for inheritance). | |
| 2745 | |
| 2953 | 2746 The fallback value will be an inst-list that is instantiated like |
| 428 | 2747 any other inst-list, a specifier of the same type as SPECIFIER |
| 2748 \(results in inheritance), or nil for no fallback. | |
| 2749 | |
| 2953 | 2750 When you instantiate a specifier, you can explicitly request that the |
| 428 | 2751 fallback not be consulted. (The C code does this, for example, when |
| 2752 merging faces.) See `specifier-instance'. | |
| 2753 */ | |
| 2754 (specifier)) | |
| 2755 { | |
| 2756 CHECK_SPECIFIER (specifier); | |
| 2757 return Fcopy_tree (XSPECIFIER (specifier)->fallback, Qt); | |
| 2758 } | |
| 2759 | |
| 2760 static Lisp_Object | |
| 2761 specifier_instance_from_inst_list (Lisp_Object specifier, | |
| 2762 Lisp_Object matchspec, | |
| 2763 Lisp_Object domain, | |
| 2764 Lisp_Object inst_list, | |
| 578 | 2765 Error_Behavior errb, int no_quit, |
| 2953 | 2766 Lisp_Object depth, |
|
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2767 Lisp_Object *instantiator, |
|
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2768 int no_fallback) |
| 428 | 2769 { |
| 2770 /* This function can GC */ | |
| 440 | 2771 Lisp_Specifier *sp; |
| 3659 | 2772 Lisp_Object device, charset = Qnil, rest; |
| 2773 int count = specpdl_depth (), respected_charsets = 0; | |
| 428 | 2774 struct gcpro gcpro1, gcpro2; |
|
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diff
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|
2775 enum font_specifier_matchspec_stages stage = STAGE_INITIAL; |
| 428 | 2776 |
| 2777 GCPRO2 (specifier, inst_list); | |
| 2778 | |
| 2779 sp = XSPECIFIER (specifier); | |
| 442 | 2780 device = DOMAIN_DEVICE (domain); |
| 428 | 2781 |
| 2782 if (no_quit) | |
| 3659 | 2783 /* The instantiate method is allowed to call eval. Since it |
| 2784 is quite common for this function to get called from somewhere in | |
| 2785 redisplay we need to make sure that quits are ignored. Otherwise | |
| 2786 Fsignal will abort. */ | |
| 428 | 2787 specbind (Qinhibit_quit, Qt); |
| 2788 | |
| 3659 | 2789 #ifdef MULE |
| 4828 | 2790 /* #### FIXME Does this font-specific stuff need to be here and not in |
| 2791 the font-specifier-specific code? --ben */ | |
|
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|
2792 if (CONSP (matchspec) && (CHARSETP (Ffind_charset (XCAR (matchspec))))) |
| 3659 | 2793 { |
|
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diff
changeset
|
2794 charset = Ffind_charset (XCAR (matchspec)); |
| 3659 | 2795 |
| 2796 #ifdef DEBUG_XEMACS | |
| 2797 /* This is mostly to have somewhere to set debug breakpoints. */ | |
| 4853 | 2798 if (!EQ (charset, Vcharset_ascii)) |
| 3659 | 2799 { |
| 4853 | 2800 (void) 0; |
| 3659 | 2801 } |
| 2802 #endif /* DEBUG_XEMACS */ | |
| 2803 | |
|
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changeset
|
2804 if (!NILP (XCDR (matchspec))) |
| 3659 | 2805 { |
| 2806 | |
|
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|
2807 #define FROB(new_stage, enumstage) \ |
|
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|
2808 if (EQ (Q##new_stage, XCDR (matchspec))) \ |
|
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|
2809 { \ |
|
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|
2810 stage = enumstage; \ |
| 3659 | 2811 } |
| 2812 | |
|
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|
2813 FROB (initial, STAGE_INITIAL) |
|
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|
2814 else FROB (final, STAGE_FINAL) |
| 3659 | 2815 else assert(0); |
| 2816 #undef FROB | |
| 2817 | |
| 2818 } | |
| 2819 } | |
| 2820 #endif /* MULE */ | |
| 2821 | |
| 2822 LIST_LOOP(rest, inst_list) | |
| 2823 { | |
| 2824 Lisp_Object tagged_inst = XCAR (rest); | |
| 2825 Lisp_Object tag_set = XCAR (tagged_inst); | |
| 2826 Lisp_Object val, the_instantiator; | |
| 2827 | |
| 2828 if (!device_matches_specifier_tag_set_p (device, tag_set)) | |
| 2829 { | |
|
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|
2830 continue; |
| 3659 | 2831 } |
| 2832 | |
| 2833 val = XCDR (tagged_inst); | |
| 2834 the_instantiator = val; | |
| 2835 | |
| 2836 if (!NILP(charset) && | |
| 2837 !(charset_matches_specifier_tag_set_p (charset, tag_set, stage))) | |
| 2838 { | |
| 2839 ++respected_charsets; | |
| 2840 continue; | |
| 2841 } | |
| 2842 | |
| 2843 if (HAS_SPECMETH_P (sp, instantiate)) | |
| 2844 val = call_with_suspended_errors | |
| 2845 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate), | |
| 2846 Qunbound, Qspecifier, errb, 5, specifier, | |
|
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|
2847 matchspec, domain, val, depth, no_fallback); |
| 3659 | 2848 |
| 2849 if (!UNBOUNDP (val)) | |
| 2850 { | |
| 2851 unbind_to (count); | |
| 2852 UNGCPRO; | |
| 2853 if (instantiator) | |
| 2854 *instantiator = the_instantiator; | |
| 2855 return val; | |
| 2856 } | |
| 2857 } | |
| 2858 | |
| 2859 /* We've checked all the tag sets, and checking the charset part of the | |
| 2860 specifier never returned 0 (preventing the attempted instantiation), so | |
| 2861 there's no need to loop for the second time to avoid checking the | |
| 2862 charsets. */ | |
| 2863 if (!respected_charsets) | |
| 2864 { | |
| 2865 unbind_to (count); | |
| 2866 UNGCPRO; | |
| 2867 return Qunbound; | |
| 2868 } | |
| 2869 | |
| 2870 /* Right, didn't instantiate a specifier last time, perhaps because we | |
| 2871 paid attention to the charset-specific aspects of the specifier. Try | |
| 2872 again without checking the charset information. | |
| 2873 | |
| 2874 We can't emulate the approach for devices, defaulting to matching all | |
| 2875 character sets for a given specifier, because $random font instantiator | |
| 2876 cannot usefully show all character sets, and indeed having it try is a | |
| 2877 failure on our part. */ | |
| 428 | 2878 LIST_LOOP (rest, inst_list) |
| 2879 { | |
| 2880 Lisp_Object tagged_inst = XCAR (rest); | |
| 2881 Lisp_Object tag_set = XCAR (tagged_inst); | |
| 3659 | 2882 Lisp_Object val, the_instantiator; |
| 2883 | |
| 2884 if (!device_matches_specifier_tag_set_p (device, tag_set)) | |
| 428 | 2885 { |
|
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|
2886 continue; |
| 3659 | 2887 } |
| 2888 | |
| 2889 val = XCDR (tagged_inst); | |
| 2890 the_instantiator = val; | |
| 2891 | |
| 2892 if (HAS_SPECMETH_P (sp, instantiate)) | |
| 2893 val = call_with_suspended_errors | |
| 2894 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate), | |
| 2895 Qunbound, Qspecifier, errb, 5, specifier, | |
|
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diff
changeset
|
2896 matchspec, domain, val, depth, no_fallback); |
| 3659 | 2897 |
| 2898 if (!UNBOUNDP (val)) | |
| 2899 { | |
| 2900 unbind_to (count); | |
| 2901 UNGCPRO; | |
| 2902 if (instantiator) | |
| 2903 *instantiator = the_instantiator; | |
| 2904 return val; | |
| 428 | 2905 } |
| 2906 } | |
| 2907 | |
| 771 | 2908 unbind_to (count); |
| 428 | 2909 UNGCPRO; |
| 2910 return Qunbound; | |
| 2911 } | |
| 2912 | |
| 2913 /* Given a SPECIFIER and a DOMAIN, return a specific instance for that | |
| 2914 specifier. Try to find one by checking the specifier types from most | |
| 4437 | 2915 specific (window) to most general (global). If we find an instance, |
| 428 | 2916 return it. Otherwise return Qunbound. */ |
| 2917 | |
| 2918 #define CHECK_INSTANCE_ENTRY(key, matchspec, type) do { \ | |
| 3659 | 2919 Lisp_Object *CIE_inst_list = \ |
| 2920 specifier_get_inst_list (specifier, key, type); \ | |
| 2921 if (CIE_inst_list) \ | |
| 2922 { \ | |
| 2923 Lisp_Object CIE_val = \ | |
| 2924 specifier_instance_from_inst_list (specifier, matchspec, \ | |
| 2925 domain, *CIE_inst_list, \ | |
| 2926 errb, no_quit, depth, \ | |
|
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diff
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|
2927 instantiator, no_fallback); \ |
| 3659 | 2928 if (!UNBOUNDP (CIE_val)) \ |
| 2929 return CIE_val; \ | |
| 2930 } \ | |
| 2931 } while (0) | |
| 428 | 2932 |
| 2933 /* We accept any window, frame or device domain and do our checking | |
| 2934 starting from as specific a locale type as we can determine from the | |
| 2935 domain we are passed and going on up through as many other locale types | |
| 2936 as we can determine. In practice, when called from redisplay the | |
| 2937 arg will usually be a window and occasionally a frame. If | |
| 2938 triggered by a user call, who knows what it will usually be. */ | |
| 2953 | 2939 |
| 2940 static Lisp_Object | |
| 2941 specifier_instance_1 (Lisp_Object specifier, Lisp_Object matchspec, | |
| 2942 Lisp_Object domain, Error_Behavior errb, int no_quit, | |
| 2943 int no_fallback, Lisp_Object depth, | |
| 2944 Lisp_Object *instantiator) | |
| 428 | 2945 { |
| 2946 Lisp_Object buffer = Qnil; | |
| 2947 Lisp_Object window = Qnil; | |
| 2948 Lisp_Object frame = Qnil; | |
| 2949 Lisp_Object device = Qnil; | |
| 444 | 2950 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2951 |
| 2953 | 2952 if (instantiator) |
| 2953 *instantiator = Qunbound; | |
| 2954 | |
| 428 | 2955 /* Attempt to determine buffer, window, frame, and device from the |
| 2956 domain. */ | |
| 442 | 2957 /* #### get image instances out of domains! */ |
| 2958 if (IMAGE_INSTANCEP (domain)) | |
| 2959 window = DOMAIN_WINDOW (domain); | |
| 2960 else if (WINDOWP (domain)) | |
| 428 | 2961 window = domain; |
| 2962 else if (FRAMEP (domain)) | |
| 2963 frame = domain; | |
| 2964 else if (DEVICEP (domain)) | |
| 2965 device = domain; | |
| 2966 else | |
| 442 | 2967 /* dmoore writes: [dammit, this should just signal an error or something |
| 2968 shouldn't it?] | |
| 2969 | |
| 2970 No. Errors are handled in Lisp primitives implementation. | |
| 428 | 2971 Invalid domain is a design error here - kkm. */ |
| 2500 | 2972 ABORT (); |
| 428 | 2973 |
| 2974 if (NILP (buffer) && !NILP (window)) | |
| 444 | 2975 buffer = WINDOW_BUFFER (XWINDOW (window)); |
| 428 | 2976 if (NILP (frame) && !NILP (window)) |
| 2977 frame = XWINDOW (window)->frame; | |
| 2978 if (NILP (device)) | |
| 2979 /* frame had better exist; if device is undeterminable, something | |
| 2980 really went wrong. */ | |
| 444 | 2981 device = FRAME_DEVICE (XFRAME (frame)); |
| 428 | 2982 |
| 2983 /* device had better be determined by now; abort if not. */ | |
| 2286 | 2984 (void) DEVICE_CLASS (XDEVICE (device)); |
| 428 | 2985 |
| 2986 depth = make_int (1 + XINT (depth)); | |
| 2987 if (XINT (depth) > 20) | |
| 2988 { | |
| 563 | 2989 maybe_signal_error (Qstack_overflow, |
| 2990 "Apparent loop in specifier inheritance", | |
| 2991 Qunbound, Qspecifier, errb); | |
| 428 | 2992 /* The specification is fucked; at least try the fallback |
| 2993 (which better not be fucked, because it's not changeable | |
| 2994 from Lisp). */ | |
| 2995 depth = Qzero; | |
| 2996 goto do_fallback; | |
| 2997 } | |
| 2998 | |
| 434 | 2999 retry: |
| 428 | 3000 /* First see if we can generate one from the window specifiers. */ |
| 3001 if (!NILP (window)) | |
| 3002 CHECK_INSTANCE_ENTRY (window, matchspec, LOCALE_WINDOW); | |
| 3003 | |
| 3004 /* Next see if we can generate one from the buffer specifiers. */ | |
| 3005 if (!NILP (buffer)) | |
| 3006 CHECK_INSTANCE_ENTRY (buffer, matchspec, LOCALE_BUFFER); | |
| 3007 | |
| 3008 /* Next see if we can generate one from the frame specifiers. */ | |
| 3009 if (!NILP (frame)) | |
| 3010 CHECK_INSTANCE_ENTRY (frame, matchspec, LOCALE_FRAME); | |
| 3011 | |
| 3012 /* If we still haven't succeeded try with the device specifiers. */ | |
| 3013 CHECK_INSTANCE_ENTRY (device, matchspec, LOCALE_DEVICE); | |
| 3014 | |
| 3015 /* Last and least try the global specifiers. */ | |
| 3016 CHECK_INSTANCE_ENTRY (Qglobal, matchspec, LOCALE_GLOBAL); | |
| 3017 | |
| 434 | 3018 do_fallback: |
| 428 | 3019 /* We're out of specifiers and we still haven't generated an |
| 3020 instance. At least try the fallback ... If this fails, | |
| 3021 then we just return Qunbound. */ | |
| 3022 | |
| 3023 if (no_fallback || NILP (sp->fallback)) | |
| 3024 /* I said, I don't want the fallbacks. */ | |
| 3025 return Qunbound; | |
| 3026 | |
| 3027 if (SPECIFIERP (sp->fallback)) | |
| 3028 { | |
| 3029 /* If you introduced loops in the default specifier chain, | |
| 3030 then you're fucked, so you better not do this. */ | |
| 3031 specifier = sp->fallback; | |
| 3032 sp = XSPECIFIER (specifier); | |
| 3033 goto retry; | |
| 3034 } | |
| 3035 | |
| 3036 assert (CONSP (sp->fallback)); | |
| 3037 return specifier_instance_from_inst_list (specifier, matchspec, domain, | |
| 3038 sp->fallback, errb, no_quit, | |
|
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parents:
3836
diff
changeset
|
3039 depth, instantiator, |
|
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3040 no_fallback); |
| 428 | 3041 } |
| 3042 #undef CHECK_INSTANCE_ENTRY | |
| 3043 | |
| 3044 Lisp_Object | |
| 2953 | 3045 specifier_instance (Lisp_Object specifier, Lisp_Object matchspec, |
| 3046 Lisp_Object domain, Error_Behavior errb, int no_quit, | |
| 3047 int no_fallback, Lisp_Object depth) | |
| 3048 { | |
| 3049 return specifier_instance_1 (specifier, matchspec, domain, errb, | |
| 3050 no_quit, no_fallback, depth, NULL); | |
| 3051 } | |
| 3052 | |
| 3053 Lisp_Object | |
| 428 | 3054 specifier_instance_no_quit (Lisp_Object specifier, Lisp_Object matchspec, |
| 578 | 3055 Lisp_Object domain, Error_Behavior errb, |
| 428 | 3056 int no_fallback, Lisp_Object depth) |
| 3057 { | |
| 2953 | 3058 return specifier_instance_1 (specifier, matchspec, domain, errb, |
| 3059 1, no_fallback, depth, NULL); | |
| 3060 } | |
| 3061 | |
| 3062 static Lisp_Object | |
| 3063 specifier_matching_foo (Lisp_Object specifier, | |
| 3064 Lisp_Object matchspec, | |
| 3065 Lisp_Object domain, | |
| 3066 Lisp_Object default_, | |
| 3067 Lisp_Object no_fallback, | |
| 3068 int want_instantiator) | |
| 3069 { | |
| 3070 Lisp_Object instance, instantiator; | |
| 3071 | |
| 3072 CHECK_SPECIFIER (specifier); | |
| 3073 if (!UNBOUNDP (matchspec)) | |
| 3074 check_valid_specifier_matchspec (matchspec, | |
| 3075 XSPECIFIER (specifier)->methods, | |
| 3076 ERROR_ME); | |
| 3077 domain = decode_domain (domain); | |
| 3078 | |
| 3079 instance = specifier_instance_1 (specifier, matchspec, domain, ERROR_ME, | |
| 3080 0, !NILP (no_fallback), Qzero, | |
| 3081 &instantiator); | |
| 3082 return UNBOUNDP (instance) ? default_ : want_instantiator ? instantiator : | |
| 3083 instance; | |
| 428 | 3084 } |
| 3085 | |
| 3086 DEFUN ("specifier-instance", Fspecifier_instance, 1, 4, 0, /* | |
| 3087 Instantiate SPECIFIER (return its value) in DOMAIN. | |
| 3088 If no instance can be generated for this domain, return DEFAULT. | |
| 3089 | |
| 2953 | 3090 DOMAIN is nearly always a window (defaulting to the selected window if |
| 3091 omitted), but can be a window, frame, or device. Other values that are legal | |
| 428 | 3092 as a locale (e.g. a buffer) are not valid as a domain because they do not |
| 3093 provide enough information to identify a particular device (see | |
| 2953 | 3094 `valid-specifier-domain-p'). Window domains are used internally in nearly |
| 3095 all circumstances when computing specifier instances of display properties. | |
| 3096 Frame domains are used in a few circumstances (such as when computing the | |
| 3097 geometry of a frame based on properties such as the toolbar widths), and | |
| 3098 device domains are rarely if ever used internally. | |
| 3099 | |
| 3100 This function looks through the specifications in SPECIFIER that correspond | |
| 3101 to DOMAIN, from most specific (specifications for DOMAIN itself) to most | |
| 3102 general (global specifications), for matching instantiators, and attempts | |
| 3103 to compute an instance value for each instantiator found. The first | |
| 3104 successfully computed value is returned. The corresponding instantiator | |
| 3105 can be returned using `specifier-instantiator'. | |
| 3106 | |
| 3107 A specifier is a generalized object for controlling the value of a property -- | |
| 3108 typically, but not necessarily, a display-related property -- that can vary | |
| 3109 over particular buffers, frames, device types, etc. | |
| 3110 | |
| 3111 A fundamental distinction must be made between the specification of a | |
| 3112 property's value, and the resulting value itself. This distinction is | |
| 3113 clearest in the case of an image -- the specification describes the source | |
| 3114 of the image (for example, a file of JPEG data), and the resulting value | |
| 3115 encapsulates a window-system object describing the image as displayed on a | |
| 3116 particular device (for example, a particular X display). The specification | |
| 3117 might also be an instruction of the form "use the background pixmap of the | |
| 3118 `modeline' face". A similar mapping exists between color strings and | |
| 3119 color-instance objects, and font strings and font-instance objects. In | |
| 3120 some cases, the specification and the resulting value are of the same type, | |
| 3121 but the distinction is still logically made. | |
| 3122 | |
| 3123 The specification of a value is called an instantiator, and the resulting | |
| 3124 value the instance. | |
| 428 | 3125 |
| 3126 "Instantiating" a specifier in a particular domain means determining | |
| 3127 the specifier's "value" in that domain. This is accomplished by | |
| 3128 searching through the specifications in the specifier that correspond | |
| 3129 to all locales that can be derived from the given domain, from specific | |
| 3130 to general. In most cases, the domain is an Emacs window. In that case | |
| 3131 specifications are searched for as follows: | |
| 3132 | |
| 3133 1. A specification whose locale is the window itself; | |
| 3134 2. A specification whose locale is the window's buffer; | |
| 3135 3. A specification whose locale is the window's frame; | |
| 3136 4. A specification whose locale is the window's frame's device; | |
| 2953 | 3137 5. A specification whose locale is `global'. |
| 428 | 3138 |
| 3139 If all of those fail, then the C-code-provided fallback value for | |
| 3140 this specifier is consulted (see `specifier-fallback'). If it is | |
| 3141 an inst-list, then this function attempts to instantiate that list | |
| 3142 just as when a specification is located in the first five steps above. | |
| 3143 If the fallback is a specifier, `specifier-instance' is called | |
| 3144 recursively on this specifier and the return value used. Note, | |
| 3145 however, that if the optional argument NO-FALLBACK is non-nil, | |
| 3146 the fallback value will not be consulted. | |
| 3147 | |
| 3148 Note that there may be more than one specification matching a particular | |
| 3149 locale; all such specifications are considered before looking for any | |
| 3150 specifications for more general locales. Any particular specification | |
| 3151 that is found may be rejected because its tag set does not match the | |
| 3152 device being instantiated over, or because the specification is not | |
| 3153 valid for the device of the given domain (e.g. the font or color name | |
| 3154 does not exist for this particular X server). | |
| 3155 | |
| 793 | 3156 NOTE: When errors occur in the process of trying a particular instantiator, |
| 3157 and the instantiator is thus skipped, warnings will be issued at level | |
| 3158 `debug'. Normally, such warnings are ignored entirely, but you can change | |
| 3159 this by setting `log-warning-minimum-level'. This is useful if you're | |
| 3160 trying to debug why particular instantiators are not being processed. | |
| 3161 | |
| 428 | 3162 The returned value is dependent on the type of specifier. For example, |
| 3163 for a font specifier (as returned by the `face-font' function), the returned | |
| 3164 value will be a font-instance object. For glyphs, the returned value | |
| 2953 | 3165 will be an image-instance object. |
| 428 | 3166 |
| 3167 See also `specifier-matching-instance'. | |
| 3168 */ | |
| 3169 (specifier, domain, default_, no_fallback)) | |
| 3170 { | |
| 2953 | 3171 return specifier_matching_foo (specifier, Qunbound, domain, default_, |
| 3172 no_fallback, 0); | |
| 3173 } | |
| 3174 | |
| 3175 DEFUN ("specifier-instantiator", Fspecifier_instantiator, 1, 4, 0, /* | |
| 3176 Return instantiator that would be used to instantiate SPECIFIER in DOMAIN. | |
| 3177 If no instance can be generated for this domain, return DEFAULT. | |
| 3178 | |
| 3179 DOMAIN should be a window, frame, or device. Other values that are legal | |
| 3180 as a locale (e.g. a buffer) are not valid as a domain because they do not | |
| 3181 provide enough information to identify a particular device (see | |
| 3182 `valid-specifier-domain-p'). DOMAIN defaults to the selected window | |
| 3183 if omitted. | |
| 3184 | |
| 3185 See `specifier-instance' for more information about the instantiation process. | |
| 3186 */ | |
| 3187 (specifier, domain, default_, no_fallback)) | |
| 3188 { | |
| 3189 return specifier_matching_foo (specifier, Qunbound, domain, default_, | |
| 3190 no_fallback, 1); | |
| 428 | 3191 } |
| 3192 | |
| 3193 DEFUN ("specifier-matching-instance", Fspecifier_matching_instance, 2, 5, 0, /* | |
| 3194 Return an instance for SPECIFIER in DOMAIN that matches MATCHSPEC. | |
| 3195 If no instance can be generated for this domain, return DEFAULT. | |
| 3196 | |
| 3197 This function is identical to `specifier-instance' except that a | |
| 3198 specification will only be considered if it matches MATCHSPEC. | |
| 3199 The definition of "match", and allowed values for MATCHSPEC, are | |
| 3200 dependent on the particular type of specifier. Here are some examples: | |
| 3201 | |
| 3202 -- For chartable (e.g. display table) specifiers, MATCHSPEC should be a | |
| 3203 character, and the specification (a chartable) must give a value for | |
| 3204 that character in order to be considered. This allows you to specify, | |
| 3205 e.g., a buffer-local display table that only gives values for particular | |
| 3206 characters. All other characters are handled as if the buffer-local | |
| 3207 display table is not there. (Chartable specifiers are not yet | |
| 3208 implemented.) | |
| 3209 | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3210 -- For font specifiers, MATCHSPEC should be a cons (CHARSET . STAGE). |
| 3674 | 3211 The defined stages are currently `initial' and `final'. On X11, 'initial |
| 3212 is used when the font matching process is looking for fonts that match | |
| 3213 the desired registries of the charset--see the `charset-registries' | |
| 3214 function. If that match process fails, then the 'final stage comes into | |
| 3215 play; this means that a more general lookup is desired, and that a font | |
| 3216 doesn't necessarily have to match the desired XLFD for the face, just the | |
| 3217 charset repertoire for this charset. It also means that the charset | |
| 3218 registry and encoding used will be `iso10646-1', and the characters will | |
| 3219 be converted to display using that registry. | |
| 3220 | |
| 3221 See `define-specifier-tag' for details on how to create a tag that | |
| 3222 specifies a given character set and stage combination. You can supply | |
| 3223 such a tag to `set-face-font' in order to set a face's font for that | |
| 3224 character set and stage combination. | |
| 428 | 3225 */ |
| 3226 (specifier, matchspec, domain, default_, no_fallback)) | |
| 3227 { | |
| 2953 | 3228 return specifier_matching_foo (specifier, matchspec, domain, default_, |
| 3229 no_fallback, 0); | |
| 3230 } | |
| 3231 | |
| 3232 DEFUN ("specifier-matching-instantiator", Fspecifier_matching_instantiator, | |
| 3233 2, 5, 0, /* | |
| 3234 Return instantiator for instance of 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-matching-instance' but returns | |
| 3238 the instantiator used to generate the instance, rather than the actual | |
| 3239 instance. | |
| 3240 */ | |
| 3241 (specifier, matchspec, domain, default_, no_fallback)) | |
| 3242 { | |
| 3243 return specifier_matching_foo (specifier, matchspec, domain, default_, | |
| 3244 no_fallback, 1); | |
| 3245 } | |
| 3246 | |
| 3247 static Lisp_Object | |
| 3248 specifier_matching_foo_from_inst_list (Lisp_Object specifier, | |
| 3249 Lisp_Object matchspec, | |
| 3250 Lisp_Object domain, | |
| 3251 Lisp_Object inst_list, | |
| 3252 Lisp_Object default_, | |
| 3253 int want_instantiator) | |
| 3254 { | |
| 3255 Lisp_Object val = Qunbound; | |
| 3256 Lisp_Specifier *sp = XSPECIFIER (specifier); | |
| 3257 struct gcpro gcpro1; | |
| 3258 Lisp_Object built_up_list = Qnil; | |
| 3259 Lisp_Object instantiator; | |
| 428 | 3260 |
| 3261 CHECK_SPECIFIER (specifier); | |
| 2953 | 3262 if (!UNBOUNDP (matchspec)) |
| 3263 check_valid_specifier_matchspec (matchspec, | |
| 3264 XSPECIFIER (specifier)->methods, | |
| 3265 ERROR_ME); | |
| 3266 check_valid_domain (domain); | |
| 3267 check_valid_inst_list (inst_list, sp->methods, ERROR_ME); | |
| 3268 GCPRO1 (built_up_list); | |
| 3269 built_up_list = build_up_processed_list (specifier, domain, inst_list); | |
| 3270 if (!NILP (built_up_list)) | |
| 3271 val = specifier_instance_from_inst_list (specifier, matchspec, domain, | |
| 3272 built_up_list, ERROR_ME, | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3273 0, Qzero, &instantiator, 0); |
| 2953 | 3274 UNGCPRO; |
| 3275 return UNBOUNDP (val) ? default_ : want_instantiator ? instantiator : val; | |
| 3276 | |
| 428 | 3277 } |
| 3278 | |
| 3279 DEFUN ("specifier-instance-from-inst-list", Fspecifier_instance_from_inst_list, | |
| 3280 3, 4, 0, /* | |
| 3281 Attempt to convert a particular inst-list into an instance. | |
| 3282 This attempts to instantiate INST-LIST in the given DOMAIN, | |
| 3283 as if INST-LIST existed in a specification in SPECIFIER. If | |
| 3284 the instantiation fails, DEFAULT is returned. In most circumstances, | |
| 3285 you should not use this function; use `specifier-instance' instead. | |
| 3286 */ | |
| 3287 (specifier, domain, inst_list, default_)) | |
| 3288 { | |
| 2953 | 3289 return specifier_matching_foo_from_inst_list (specifier, Qunbound, |
| 3290 domain, inst_list, default_, | |
| 3291 0); | |
| 3292 } | |
| 3293 | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3294 DEFUN ("specifier-instantiator-from-inst-list", |
| 3659 | 3295 Fspecifier_instantiator_from_inst_list, 3, 4, 0, /* |
| 2953 | 3296 Attempt to convert an inst-list into an instance; return instantiator. |
| 3297 This is identical to `specifier-instance-from-inst-list' but returns | |
| 3298 the instantiator used to generate the instance, rather than the instance | |
| 3299 itself. | |
| 3300 */ | |
| 3301 (specifier, domain, inst_list, default_)) | |
| 3302 { | |
| 3303 return specifier_matching_foo_from_inst_list (specifier, Qunbound, | |
| 3304 domain, inst_list, default_, | |
| 3305 1); | |
| 428 | 3306 } |
| 3307 | |
| 442 | 3308 DEFUN ("specifier-matching-instance-from-inst-list", |
| 3309 Fspecifier_matching_instance_from_inst_list, | |
| 428 | 3310 4, 5, 0, /* |
| 3311 Attempt to convert a particular inst-list into an instance. | |
| 3312 This attempts to instantiate INST-LIST in the given DOMAIN | |
| 3313 \(as if INST-LIST existed in a specification in SPECIFIER), | |
| 3314 matching the specifications against MATCHSPEC. | |
| 3315 | |
| 3316 This function is analogous to `specifier-instance-from-inst-list' | |
| 3317 but allows for specification-matching as in `specifier-matching-instance'. | |
| 3318 See that function for a description of exactly how the matching process | |
| 3319 works. | |
| 3320 */ | |
| 3321 (specifier, matchspec, domain, inst_list, default_)) | |
| 3322 { | |
| 2953 | 3323 return specifier_matching_foo_from_inst_list (specifier, matchspec, |
| 3324 domain, inst_list, default_, | |
| 3325 0); | |
| 3326 } | |
| 3327 | |
| 3328 DEFUN ("specifier-matching-instantiator-from-inst-list", | |
| 3329 Fspecifier_matching_instantiator_from_inst_list, | |
| 3330 4, 5, 0, /* | |
| 3331 Attempt to convert an inst-list into an instance; return instantiator. | |
| 3332 This is identical to `specifier-matching-instance-from-inst-list' but returns | |
| 3333 the instantiator used to generate the instance, rather than the instance | |
| 3334 itself. | |
| 3335 */ | |
| 3336 (specifier, matchspec, domain, inst_list, default_)) | |
| 3337 { | |
| 3338 return specifier_matching_foo_from_inst_list (specifier, matchspec, | |
| 3339 domain, inst_list, default_, | |
| 3340 1); | |
| 428 | 3341 } |
| 3342 | |
| 3343 | |
| 3344 /************************************************************************/ | |
| 3345 /* Caching in the struct window or frame */ | |
| 3346 /************************************************************************/ | |
| 3347 | |
| 853 | 3348 /* Cause the current value of SPECIFIER in the domain of each frame and/or |
| 3349 window to be cached in the struct frame at STRUCT_FRAME_OFFSET and the | |
| 3350 struct window at STRUCT_WINDOW_OFFSET. When the value changes in a | |
| 3351 particular window, VALUE_CHANGED_IN_WINDOW is called. When the value | |
| 3352 changes in a particular frame, VALUE_CHANGED_IN_FRAME is called. | |
| 3353 | |
| 3354 Either STRUCT_WINDOW_OFFSET or STRUCT_FRAME_OFFSET can be 0 to indicate | |
| 3355 no caching in that sort of object. However, if they're not 0, you | |
| 3356 must supply a corresponding value-changed function. (This is the case | |
| 3357 so that you are forced to consider the ramifications of a value change. | |
| 3358 You nearly always need to do something, e.g. set a dirty flag.) | |
| 3359 | |
| 3360 If you create a built-in specifier, you should do the following: | |
| 3361 | |
| 3362 - Make sure the file you create the specifier in has a | |
| 3659 | 3363 specifier_vars_of_foo() function. If not, create it, declare it in |
| 3364 symsinit.h, and make sure it's called in the appropriate place in | |
| 3365 emacs.c. | |
| 853 | 3366 - In specifier_vars_of_foo(), do a DEFVAR_SPECIFIER(), followed by |
| 3659 | 3367 initializing the specifier using Fmake_specifier(), followed by |
| 3368 set_specifier_fallback(), followed (optionally) by | |
| 3369 set_specifier_caching(). | |
| 853 | 3370 - If you used set_specifier_caching(), make sure to create the |
| 3659 | 3371 appropriate value-changed functions. Also make sure to add the |
| 3372 appropriate slots where the values are cached to frameslots.h and | |
| 3373 winslots.h. | |
| 853 | 3374 |
| 3375 Do a grep for menubar_visible_p for an example. | |
| 3376 */ | |
| 428 | 3377 |
| 3378 /* #### It would be nice if the specifier caching automatically knew | |
| 3379 about specifier fallbacks, so we didn't have to do it ourselves. */ | |
| 3380 | |
| 3381 void | |
| 3382 set_specifier_caching (Lisp_Object specifier, int struct_window_offset, | |
| 3383 void (*value_changed_in_window) | |
| 3384 (Lisp_Object specifier, struct window *w, | |
| 3385 Lisp_Object oldval), | |
| 3386 int struct_frame_offset, | |
| 3387 void (*value_changed_in_frame) | |
| 3388 (Lisp_Object specifier, struct frame *f, | |
| 444 | 3389 Lisp_Object oldval), |
| 3390 int always_recompute) | |
| 428 | 3391 { |
| 440 | 3392 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 3393 assert (!GHOST_SPECIFIER_P (sp)); |
| 3394 | |
| 3395 if (!sp->caching) | |
| 3092 | 3396 #ifdef NEW_GC |
| 3397 sp->caching = alloc_lrecord_type (struct specifier_caching, | |
| 3398 &lrecord_specifier_caching); | |
| 3399 #else /* not NEW_GC */ | |
| 3659 | 3400 sp->caching = xnew_and_zero (struct specifier_caching); |
| 3092 | 3401 #endif /* not NEW_GC */ |
| 428 | 3402 sp->caching->offset_into_struct_window = struct_window_offset; |
| 3403 sp->caching->value_changed_in_window = value_changed_in_window; | |
| 3404 sp->caching->offset_into_struct_frame = struct_frame_offset; | |
| 3405 sp->caching->value_changed_in_frame = value_changed_in_frame; | |
| 853 | 3406 if (struct_window_offset) |
| 3407 assert (value_changed_in_window); | |
| 3408 if (struct_frame_offset) | |
| 3409 assert (value_changed_in_frame); | |
| 444 | 3410 sp->caching->always_recompute = always_recompute; |
| 428 | 3411 Vcached_specifiers = Fcons (specifier, Vcached_specifiers); |
| 3412 if (BODILY_SPECIFIER_P (sp)) | |
| 3413 GHOST_SPECIFIER(sp)->caching = sp->caching; | |
| 3414 recompute_cached_specifier_everywhere (specifier); | |
| 3415 } | |
| 3416 | |
| 3417 static void | |
| 3418 recompute_one_cached_specifier_in_window (Lisp_Object specifier, | |
| 3419 struct window *w) | |
| 3420 { | |
| 3421 Lisp_Object window; | |
| 444 | 3422 Lisp_Object newval, *location, oldval; |
| 428 | 3423 |
| 3424 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier))); | |
| 3425 | |
| 793 | 3426 window = wrap_window (w); |
| 428 | 3427 |
| 3428 newval = specifier_instance (specifier, Qunbound, window, ERROR_ME_WARN, | |
| 3429 0, 0, Qzero); | |
| 3430 /* If newval ended up Qunbound, then the calling functions | |
| 3431 better be able to deal. If not, set a default so this | |
| 3432 never happens or correct it in the value_changed_in_window | |
| 3433 method. */ | |
| 3434 location = (Lisp_Object *) | |
| 3435 ((char *) w + XSPECIFIER (specifier)->caching->offset_into_struct_window); | |
| 442 | 3436 /* #### What's the point of this check, other than to optimize image |
| 3437 instance instantiation? Unless you specify a caching instantiate | |
| 3438 method the instantiation that specifier_instance will do will | |
| 3439 always create a new copy. Thus EQ will always fail. Unfortunately | |
| 3440 calling equal is no good either as this doesn't take into account | |
| 3441 things attached to the specifier - for instance strings on | |
| 3442 extents. --andyp */ | |
| 444 | 3443 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute) |
| 428 | 3444 { |
| 444 | 3445 oldval = *location; |
| 428 | 3446 *location = newval; |
| 3447 (XSPECIFIER (specifier)->caching->value_changed_in_window) | |
| 3448 (specifier, w, oldval); | |
| 3449 } | |
| 3450 } | |
| 3451 | |
| 3452 static void | |
| 3453 recompute_one_cached_specifier_in_frame (Lisp_Object specifier, | |
| 3454 struct frame *f) | |
| 3455 { | |
| 3456 Lisp_Object frame; | |
| 444 | 3457 Lisp_Object newval, *location, oldval; |
| 428 | 3458 |
| 3459 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier))); | |
| 3460 | |
| 793 | 3461 frame = wrap_frame (f); |
| 428 | 3462 |
| 3463 newval = specifier_instance (specifier, Qunbound, frame, ERROR_ME_WARN, | |
| 3464 0, 0, Qzero); | |
| 3465 /* If newval ended up Qunbound, then the calling functions | |
| 3466 better be able to deal. If not, set a default so this | |
| 3467 never happens or correct it in the value_changed_in_frame | |
| 3468 method. */ | |
| 3469 location = (Lisp_Object *) | |
| 3470 ((char *) f + XSPECIFIER (specifier)->caching->offset_into_struct_frame); | |
| 444 | 3471 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute) |
| 428 | 3472 { |
| 444 | 3473 oldval = *location; |
| 428 | 3474 *location = newval; |
| 3475 (XSPECIFIER (specifier)->caching->value_changed_in_frame) | |
| 3476 (specifier, f, oldval); | |
| 3477 } | |
| 3478 } | |
| 3479 | |
| 3480 void | |
| 3481 recompute_all_cached_specifiers_in_window (struct window *w) | |
| 3482 { | |
| 3483 Lisp_Object rest; | |
| 3484 | |
| 3485 LIST_LOOP (rest, Vcached_specifiers) | |
| 3486 { | |
| 3487 Lisp_Object specifier = XCAR (rest); | |
| 3488 if (XSPECIFIER (specifier)->caching->offset_into_struct_window) | |
| 3489 recompute_one_cached_specifier_in_window (specifier, w); | |
| 3490 } | |
| 3491 } | |
| 3492 | |
| 3493 void | |
| 3494 recompute_all_cached_specifiers_in_frame (struct frame *f) | |
| 3495 { | |
| 3496 Lisp_Object rest; | |
| 3497 | |
| 3498 LIST_LOOP (rest, Vcached_specifiers) | |
| 3499 { | |
| 3500 Lisp_Object specifier = XCAR (rest); | |
| 3501 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame) | |
| 3502 recompute_one_cached_specifier_in_frame (specifier, f); | |
| 3503 } | |
| 3504 } | |
| 3505 | |
| 3506 static int | |
| 3507 recompute_cached_specifier_everywhere_mapfun (struct window *w, | |
| 3508 void *closure) | |
| 3509 { | |
| 3510 Lisp_Object specifier = Qnil; | |
| 3511 | |
| 5013 | 3512 specifier = GET_LISP_FROM_VOID (closure); |
| 428 | 3513 recompute_one_cached_specifier_in_window (specifier, w); |
| 3514 return 0; | |
| 3515 } | |
| 3516 | |
| 3517 static void | |
| 3518 recompute_cached_specifier_everywhere (Lisp_Object specifier) | |
| 3519 { | |
| 3520 Lisp_Object frmcons, devcons, concons; | |
| 3521 | |
| 3522 specifier = bodily_specifier (specifier); | |
| 3523 | |
| 3524 if (!XSPECIFIER (specifier)->caching) | |
| 3525 return; | |
| 3526 | |
| 3527 if (XSPECIFIER (specifier)->caching->offset_into_struct_window) | |
| 3528 { | |
| 3529 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 3530 map_windows (XFRAME (XCAR (frmcons)), | |
| 3531 recompute_cached_specifier_everywhere_mapfun, | |
| 5013 | 3532 STORE_LISP_IN_VOID (specifier)); |
| 428 | 3533 } |
| 3534 | |
| 3535 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame) | |
| 3536 { | |
| 3537 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 3538 recompute_one_cached_specifier_in_frame (specifier, | |
| 3539 XFRAME (XCAR (frmcons))); | |
| 3540 } | |
| 3541 } | |
| 3542 | |
| 3543 DEFUN ("set-specifier-dirty-flag", Fset_specifier_dirty_flag, 1, 1, 0, /* | |
| 3544 Force recomputation of any caches associated with SPECIFIER. | |
| 3545 Note that this automatically happens whenever you change a specification | |
| 3546 in SPECIFIER; you do not have to call this function then. | |
| 3547 One example of where this function is useful is when you have a | |
| 3548 toolbar button whose `active-p' field is an expression to be | |
| 3549 evaluated. Calling `set-specifier-dirty-flag' on the | |
| 3550 toolbar specifier will force the `active-p' fields to be | |
| 3551 recomputed. | |
| 3552 */ | |
| 3553 (specifier)) | |
| 3554 { | |
| 3555 CHECK_SPECIFIER (specifier); | |
| 3556 recompute_cached_specifier_everywhere (specifier); | |
| 3557 return Qnil; | |
| 3558 } | |
| 3559 | |
| 3560 | |
| 3561 /************************************************************************/ | |
| 3562 /* Generic specifier type */ | |
| 3563 /************************************************************************/ | |
| 3564 | |
| 3565 DEFINE_SPECIFIER_TYPE (generic); | |
| 3566 | |
| 3567 #if 0 | |
| 3568 | |
| 3569 /* This is the string that used to be in `generic-specifier-p'. | |
| 3570 The idea is good, but it doesn't quite work in the form it's | |
| 3571 in. (One major problem is that validating an instantiator | |
| 3572 is supposed to require only that the specifier type is passed, | |
| 3573 while with this approach the actual specifier is needed.) | |
| 3574 | |
| 3575 What really needs to be done is to write a function | |
| 3576 `make-specifier-type' that creates new specifier types. | |
| 442 | 3577 |
| 3578 #### [I'll look into this for 19.14.] Well, sometime. (Currently | |
| 3579 May 2000, 21.2 is in development. 19.14 was released in June 1996.) */ | |
| 428 | 3580 |
| 3581 "A generic specifier is a generalized kind of specifier with user-defined\n" | |
| 3582 "semantics. The instantiator can be any kind of Lisp object, and the\n" | |
| 3583 "instance computed from it is likewise any kind of Lisp object. The\n" | |
| 3584 "SPECIFIER-DATA should be an alist of methods governing how the specifier\n" | |
| 3585 "works. All methods are optional, and reasonable default methods will be\n" | |
| 2953 | 3586 "provided. Currently there are two defined methods: `instantiate' and\n" |
| 3587 "`validate'.\n" | |
| 428 | 3588 "\n" |
| 2953 | 3589 "`instantiate' specifies how to do the instantiation; if omitted, the\n" |
| 428 | 3590 "instantiator itself is simply returned as the instance. The method\n" |
| 3591 "should be a function that accepts three parameters (a specifier, the\n" | |
| 3592 "instantiator that matched the domain being instantiated over, and that\n" | |
| 3593 "domain), and should return a one-element list containing the instance,\n" | |
| 3594 "or nil if no instance exists. Note that the domain passed to this function\n" | |
| 3595 "is the domain being instantiated over, which may not be the same as the\n" | |
| 3596 "locale contained in the specification corresponding to the instantiator\n" | |
| 3597 "(for example, the domain being instantiated over could be a window, but\n" | |
| 3598 "the locale corresponding to the passed instantiator could be the window's\n" | |
| 3599 "buffer or frame).\n" | |
| 3600 "\n" | |
| 2953 | 3601 "`validate' specifies whether a given instantiator is valid; if omitted,\n" |
| 428 | 3602 "all instantiators are considered valid. It should be a function of\n" |
| 3603 "two arguments: an instantiator and a flag CAN-SIGNAL-ERROR. If this\n" | |
| 3604 "flag is false, the function must simply return t or nil indicating\n" | |
| 3605 "whether the instantiator is valid. If this flag is true, the function\n" | |
| 3606 "is free to signal an error if it encounters an invalid instantiator\n" | |
| 3607 "(this can be useful for issuing a specific error about exactly why the\n" | |
| 3608 "instantiator is valid). It can also return nil to indicate an invalid\n" | |
| 3609 "instantiator; in this case, a general error will be signalled." | |
| 3610 | |
| 3611 #endif /* 0 */ | |
| 3612 | |
| 3613 DEFUN ("generic-specifier-p", Fgeneric_specifier_p, 1, 1, 0, /* | |
| 3614 Return non-nil if OBJECT is a generic specifier. | |
| 3615 | |
| 442 | 3616 See `make-generic-specifier' for a description of possible generic |
| 3617 instantiators. | |
| 428 | 3618 */ |
| 3619 (object)) | |
| 3620 { | |
| 3621 return GENERIC_SPECIFIERP (object) ? Qt : Qnil; | |
| 3622 } | |
| 3623 | |
| 3624 | |
| 3625 /************************************************************************/ | |
| 3626 /* Integer specifier type */ | |
| 3627 /************************************************************************/ | |
| 3628 | |
| 3629 DEFINE_SPECIFIER_TYPE (integer); | |
| 3630 | |
| 3631 static void | |
| 3632 integer_validate (Lisp_Object instantiator) | |
| 3633 { | |
| 3634 CHECK_INT (instantiator); | |
| 3635 } | |
| 3636 | |
| 3637 DEFUN ("integer-specifier-p", Finteger_specifier_p, 1, 1, 0, /* | |
| 3638 Return non-nil if OBJECT is an integer specifier. | |
| 442 | 3639 |
| 3640 See `make-integer-specifier' for a description of possible integer | |
| 3641 instantiators. | |
| 428 | 3642 */ |
| 3643 (object)) | |
| 3644 { | |
| 3645 return INTEGER_SPECIFIERP (object) ? Qt : Qnil; | |
| 3646 } | |
| 3647 | |
| 3648 /************************************************************************/ | |
| 3649 /* Non-negative-integer specifier type */ | |
| 3650 /************************************************************************/ | |
| 3651 | |
| 3652 DEFINE_SPECIFIER_TYPE (natnum); | |
| 3653 | |
| 3654 static void | |
| 3655 natnum_validate (Lisp_Object instantiator) | |
| 3656 { | |
| 3657 CHECK_NATNUM (instantiator); | |
| 3658 } | |
| 3659 | |
| 3660 DEFUN ("natnum-specifier-p", Fnatnum_specifier_p, 1, 1, 0, /* | |
| 3661 Return non-nil if OBJECT is a natnum (non-negative-integer) specifier. | |
| 442 | 3662 |
| 3663 See `make-natnum-specifier' for a description of possible natnum | |
| 3664 instantiators. | |
| 428 | 3665 */ |
| 3666 (object)) | |
| 3667 { | |
| 3668 return NATNUM_SPECIFIERP (object) ? Qt : Qnil; | |
| 3669 } | |
| 3670 | |
| 3671 /************************************************************************/ | |
| 3672 /* Boolean specifier type */ | |
| 3673 /************************************************************************/ | |
| 3674 | |
| 3675 DEFINE_SPECIFIER_TYPE (boolean); | |
| 3676 | |
| 3677 static void | |
| 3678 boolean_validate (Lisp_Object instantiator) | |
| 3679 { | |
| 3680 if (!EQ (instantiator, Qt) && !EQ (instantiator, Qnil)) | |
| 563 | 3681 invalid_constant ("Must be t or nil", instantiator); |
| 428 | 3682 } |
| 3683 | |
| 3684 DEFUN ("boolean-specifier-p", Fboolean_specifier_p, 1, 1, 0, /* | |
| 3685 Return non-nil if OBJECT is a boolean specifier. | |
| 442 | 3686 |
| 3687 See `make-boolean-specifier' for a description of possible boolean | |
| 3688 instantiators. | |
| 428 | 3689 */ |
| 3690 (object)) | |
| 3691 { | |
| 3692 return BOOLEAN_SPECIFIERP (object) ? Qt : Qnil; | |
| 3693 } | |
| 3694 | |
| 3695 /************************************************************************/ | |
| 3696 /* Display table specifier type */ | |
| 3697 /************************************************************************/ | |
| 3698 | |
| 3699 DEFINE_SPECIFIER_TYPE (display_table); | |
| 3700 | |
| 3659 | 3701 #define VALID_SINGLE_DISPTABLE_INSTANTIATOR_P(instantiator) \ |
| 3702 (VECTORP (instantiator) \ | |
| 3703 || (CHAR_TABLEP (instantiator) \ | |
| 3704 && (XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_CHAR \ | |
| 442 | 3705 || XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_GENERIC)) \ |
| 428 | 3706 || RANGE_TABLEP (instantiator)) |
| 3707 | |
| 3708 static void | |
| 3709 display_table_validate (Lisp_Object instantiator) | |
| 3710 { | |
| 3711 if (NILP (instantiator)) | |
| 3712 /* OK */ | |
| 3713 ; | |
| 3714 else if (CONSP (instantiator)) | |
| 3715 { | |
| 2367 | 3716 EXTERNAL_LIST_LOOP_2 (car, instantiator) |
| 428 | 3717 { |
| 3718 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (car)) | |
| 3719 goto lose; | |
| 3720 } | |
| 3721 } | |
| 3722 else | |
| 3723 { | |
| 3724 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (instantiator)) | |
| 3725 { | |
| 3726 lose: | |
| 442 | 3727 dead_wrong_type_argument |
| 3728 (display_table_specifier_methods->predicate_symbol, | |
| 3659 | 3729 instantiator); |
| 428 | 3730 } |
| 3731 } | |
| 3732 } | |
| 3733 | |
| 3734 DEFUN ("display-table-specifier-p", Fdisplay_table_specifier_p, 1, 1, 0, /* | |
| 3735 Return non-nil if OBJECT is a display-table specifier. | |
| 442 | 3736 |
| 3737 See `current-display-table' for a description of possible display-table | |
| 3738 instantiators. | |
| 428 | 3739 */ |
| 3740 (object)) | |
| 3741 { | |
| 3742 return DISPLAYTABLE_SPECIFIERP (object) ? Qt : Qnil; | |
| 3743 } | |
| 3744 | |
| 3745 | |
| 3746 /************************************************************************/ | |
| 3747 /* Initialization */ | |
| 3748 /************************************************************************/ | |
| 3749 | |
| 3750 void | |
| 3751 syms_of_specifier (void) | |
| 3752 { | |
| 442 | 3753 INIT_LRECORD_IMPLEMENTATION (specifier); |
| 3092 | 3754 #ifdef NEW_GC |
| 3755 INIT_LRECORD_IMPLEMENTATION (specifier_caching); | |
| 3756 #endif /* NEW_GC */ | |
| 442 | 3757 |
| 3758 DEFSYMBOL (Qspecifierp); | |
| 3759 | |
| 3760 DEFSYMBOL (Qconsole_type); | |
| 3761 DEFSYMBOL (Qdevice_class); | |
| 3762 | |
| 3763 /* specifier types defined in general.c. */ | |
| 428 | 3764 |
| 3765 DEFSUBR (Fvalid_specifier_type_p); | |
| 3766 DEFSUBR (Fspecifier_type_list); | |
| 3767 DEFSUBR (Fmake_specifier); | |
| 3768 DEFSUBR (Fspecifierp); | |
| 3769 DEFSUBR (Fspecifier_type); | |
| 3770 | |
| 3771 DEFSUBR (Fvalid_specifier_locale_p); | |
| 3772 DEFSUBR (Fvalid_specifier_domain_p); | |
| 3773 DEFSUBR (Fvalid_specifier_locale_type_p); | |
| 3774 DEFSUBR (Fspecifier_locale_type_from_locale); | |
| 3775 | |
| 3776 DEFSUBR (Fvalid_specifier_tag_p); | |
| 3777 DEFSUBR (Fvalid_specifier_tag_set_p); | |
| 3778 DEFSUBR (Fcanonicalize_tag_set); | |
| 3779 DEFSUBR (Fdevice_matches_specifier_tag_set_p); | |
| 3780 DEFSUBR (Fdefine_specifier_tag); | |
| 3781 DEFSUBR (Fdevice_matching_specifier_tag_list); | |
| 3673 | 3782 |
| 428 | 3783 DEFSUBR (Fspecifier_tag_list); |
| 3659 | 3784 DEFSUBR (Fspecifier_tag_device_predicate); |
| 3785 DEFSUBR (Fspecifier_tag_charset_predicate); | |
| 428 | 3786 |
| 3787 DEFSUBR (Fcheck_valid_instantiator); | |
| 3788 DEFSUBR (Fvalid_instantiator_p); | |
| 3789 DEFSUBR (Fcheck_valid_inst_list); | |
| 3790 DEFSUBR (Fvalid_inst_list_p); | |
| 3791 DEFSUBR (Fcheck_valid_spec_list); | |
| 3792 DEFSUBR (Fvalid_spec_list_p); | |
| 3793 DEFSUBR (Fadd_spec_to_specifier); | |
| 3794 DEFSUBR (Fadd_spec_list_to_specifier); | |
| 3795 DEFSUBR (Fspecifier_spec_list); | |
| 3796 DEFSUBR (Fspecifier_specs); | |
| 3797 DEFSUBR (Fremove_specifier); | |
| 3798 DEFSUBR (Fcopy_specifier); | |
| 3799 | |
| 3800 DEFSUBR (Fcheck_valid_specifier_matchspec); | |
| 3801 DEFSUBR (Fvalid_specifier_matchspec_p); | |
| 3802 DEFSUBR (Fspecifier_fallback); | |
| 3803 DEFSUBR (Fspecifier_instance); | |
| 2953 | 3804 DEFSUBR (Fspecifier_instantiator); |
| 428 | 3805 DEFSUBR (Fspecifier_matching_instance); |
| 2953 | 3806 DEFSUBR (Fspecifier_matching_instantiator); |
| 428 | 3807 DEFSUBR (Fspecifier_instance_from_inst_list); |
| 2953 | 3808 DEFSUBR (Fspecifier_instantiator_from_inst_list); |
| 428 | 3809 DEFSUBR (Fspecifier_matching_instance_from_inst_list); |
| 2953 | 3810 DEFSUBR (Fspecifier_matching_instantiator_from_inst_list); |
| 428 | 3811 DEFSUBR (Fset_specifier_dirty_flag); |
| 3812 | |
| 3813 DEFSUBR (Fgeneric_specifier_p); | |
| 3814 DEFSUBR (Finteger_specifier_p); | |
| 3815 DEFSUBR (Fnatnum_specifier_p); | |
| 3816 DEFSUBR (Fboolean_specifier_p); | |
| 3817 DEFSUBR (Fdisplay_table_specifier_p); | |
| 3818 | |
| 3819 /* Symbols pertaining to specifier creation. Specifiers are created | |
| 3820 in the syms_of() functions. */ | |
| 3821 | |
| 3822 /* locales are defined in general.c. */ | |
| 3823 | |
| 442 | 3824 /* some how-to-add flags in general.c. */ |
| 3825 DEFSYMBOL (Qremove_tag_set_prepend); | |
| 3826 DEFSYMBOL (Qremove_tag_set_append); | |
| 3827 DEFSYMBOL (Qremove_locale); | |
| 3828 DEFSYMBOL (Qremove_locale_type); | |
| 428 | 3829 } |
| 3830 | |
| 3831 void | |
| 3832 specifier_type_create (void) | |
| 3833 { | |
| 3834 the_specifier_type_entry_dynarr = Dynarr_new (specifier_type_entry); | |
| 2367 | 3835 dump_add_root_block_ptr (&the_specifier_type_entry_dynarr, &sted_description); |
| 428 | 3836 |
| 3837 Vspecifier_type_list = Qnil; | |
| 3838 staticpro (&Vspecifier_type_list); | |
| 3839 | |
| 3840 INITIALIZE_SPECIFIER_TYPE (generic, "generic", "generic-specifier-p"); | |
| 3841 | |
| 3842 INITIALIZE_SPECIFIER_TYPE (integer, "integer", "integer-specifier-p"); | |
| 3843 | |
| 3844 SPECIFIER_HAS_METHOD (integer, validate); | |
| 3845 | |
| 3846 INITIALIZE_SPECIFIER_TYPE (natnum, "natnum", "natnum-specifier-p"); | |
| 3847 | |
| 3848 SPECIFIER_HAS_METHOD (natnum, validate); | |
| 3849 | |
| 3850 INITIALIZE_SPECIFIER_TYPE (boolean, "boolean", "boolean-specifier-p"); | |
| 3851 | |
| 3852 SPECIFIER_HAS_METHOD (boolean, validate); | |
| 3853 | |
| 442 | 3854 INITIALIZE_SPECIFIER_TYPE (display_table, "display-table", |
| 3855 "display-table-p"); | |
| 428 | 3856 |
| 3857 SPECIFIER_HAS_METHOD (display_table, validate); | |
| 3858 } | |
| 3859 | |
| 3860 void | |
| 3861 reinit_specifier_type_create (void) | |
| 3862 { | |
| 3863 REINITIALIZE_SPECIFIER_TYPE (generic); | |
| 3864 REINITIALIZE_SPECIFIER_TYPE (integer); | |
| 3865 REINITIALIZE_SPECIFIER_TYPE (natnum); | |
| 3866 REINITIALIZE_SPECIFIER_TYPE (boolean); | |
| 3867 REINITIALIZE_SPECIFIER_TYPE (display_table); | |
| 3868 } | |
| 3869 | |
| 3870 void | |
| 3871 vars_of_specifier (void) | |
| 3872 { | |
| 3873 Vcached_specifiers = Qnil; | |
| 3874 staticpro (&Vcached_specifiers); | |
| 3875 | |
| 3876 /* Do NOT mark through this, or specifiers will never be GC'd. | |
| 3877 This is the same deal as for weak hash tables. */ | |
| 3878 Vall_specifiers = Qnil; | |
| 452 | 3879 dump_add_weak_object_chain (&Vall_specifiers); |
| 428 | 3880 |
| 3881 Vuser_defined_tags = Qnil; | |
| 3882 staticpro (&Vuser_defined_tags); | |
| 3883 | |
| 3884 Vunlock_ghost_specifiers = Qnil; | |
| 3885 staticpro (&Vunlock_ghost_specifiers); | |
| 3659 | 3886 |
|
5015
d95c102a96d3
cleanups for specifier font stages, from ben-unicode-internal (preparation for eliminating shadowed warnings)
Ben Wing <ben@xemacs.org>
parents:
5013
diff
changeset
|
3887 Vcharset_tag_lists = |
|
d95c102a96d3
cleanups for specifier font stages, from ben-unicode-internal (preparation for eliminating shadowed warnings)
Ben Wing <ben@xemacs.org>
parents:
5013
diff
changeset
|
3888 make_lisp_hash_table (50, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ); |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3889 staticpro (&Vcharset_tag_lists); |
| 428 | 3890 } |