Mercurial > hg > xemacs-beta
annotate src/specifier.c @ 5162:41262f87eb39
Handle (function ...) specially, cl-prettyprint.
2010-03-21 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (cl-prettyprint):
Handle (function ...) specially here, as we do (quote ...).
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 21 Mar 2010 13:20:35 +0000 |
| parents | 88bd4f3ef8e4 |
| children | 6c6d78781d59 |
| 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) | |
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283 printing_unreadable_object_fmt ("#<%s-specifier 0x%x>", |
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284 sp->methods->name, LISP_OBJECT_UID (obj)); |
| 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); |
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305 write_fmt_string (printcharfun, " 0x%x>", LISP_OBJECT_UID (obj)); |
| 428 | 306 } |
| 307 | |
| 3263 | 308 #ifndef NEW_GC |
| 428 | 309 static void |
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310 finalize_specifier (Lisp_Object obj) |
| 428 | 311 { |
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312 Lisp_Specifier *sp = XSPECIFIER (obj); |
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313 if (!GHOST_SPECIFIER_P(sp) && sp->caching) |
| 428 | 314 { |
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315 xfree (sp->caching); |
| 428 | 316 sp->caching = 0; |
| 317 } | |
| 318 } | |
| 3263 | 319 #endif /* not NEW_GC */ |
| 428 | 320 |
| 321 static int | |
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322 specifier_equal (Lisp_Object obj1, Lisp_Object obj2, int depth, int foldcase) |
| 428 | 323 { |
| 440 | 324 Lisp_Specifier *s1 = XSPECIFIER (obj1); |
| 325 Lisp_Specifier *s2 = XSPECIFIER (obj2); | |
| 428 | 326 int retval; |
| 327 Lisp_Object old_inhibit_quit = Vinhibit_quit; | |
| 328 | |
| 329 /* This function can be called from within redisplay. | |
| 330 internal_equal can trigger a quit. That leads to Bad Things. */ | |
| 331 Vinhibit_quit = Qt; | |
| 332 | |
| 333 depth++; | |
| 334 retval = | |
| 335 (s1->methods == s2->methods && | |
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336 internal_equal_0 (s1->global_specs, s2->global_specs, depth, foldcase) && |
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337 internal_equal_0 (s1->device_specs, s2->device_specs, depth, foldcase) && |
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338 internal_equal_0 (s1->frame_specs, s2->frame_specs, depth, foldcase) && |
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339 internal_equal_0 (s1->window_specs, s2->window_specs, depth, foldcase) && |
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340 internal_equal_0 (s1->buffer_specs, s2->buffer_specs, depth, foldcase) && |
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341 internal_equal_0 (s1->fallback, s2->fallback, depth, foldcase)); |
| 428 | 342 |
| 343 if (retval && HAS_SPECMETH_P (s1, equal)) | |
| 344 retval = SPECMETH (s1, equal, (obj1, obj2, depth - 1)); | |
| 345 | |
| 346 Vinhibit_quit = old_inhibit_quit; | |
| 347 return retval; | |
| 348 } | |
| 349 | |
| 2515 | 350 static Hashcode |
| 428 | 351 specifier_hash (Lisp_Object obj, int depth) |
| 352 { | |
| 440 | 353 Lisp_Specifier *s = XSPECIFIER (obj); |
| 428 | 354 |
| 355 /* specifier hashing is a bit problematic because there are so | |
| 356 many places where data can be stored. We pick what are perhaps | |
| 357 the most likely places where interesting stuff will be. */ | |
| 358 return HASH5 ((HAS_SPECMETH_P (s, hash) ? | |
| 359 SPECMETH (s, hash, (obj, depth)) : 0), | |
| 2515 | 360 (Hashcode) s->methods, |
| 428 | 361 internal_hash (s->global_specs, depth + 1), |
| 362 internal_hash (s->frame_specs, depth + 1), | |
| 363 internal_hash (s->buffer_specs, depth + 1)); | |
| 364 } | |
| 365 | |
| 665 | 366 inline static Bytecount |
| 367 aligned_sizeof_specifier (Bytecount specifier_type_specific_size) | |
| 456 | 368 { |
| 826 | 369 return MAX_ALIGN_SIZE (offsetof (Lisp_Specifier, data) |
| 370 + specifier_type_specific_size); | |
| 456 | 371 } |
| 372 | |
| 665 | 373 static Bytecount |
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374 sizeof_specifier (Lisp_Object obj) |
| 428 | 375 { |
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376 const Lisp_Specifier *p = XSPECIFIER (obj); |
| 456 | 377 return aligned_sizeof_specifier (GHOST_SPECIFIER_P (p) |
| 378 ? 0 | |
| 379 : p->methods->extra_data_size); | |
| 428 | 380 } |
| 381 | |
| 1204 | 382 static const struct memory_description specifier_methods_description_1[] = { |
| 440 | 383 { XD_LISP_OBJECT, offsetof (struct specifier_methods, predicate_symbol) }, |
| 428 | 384 { XD_END } |
| 385 }; | |
| 386 | |
| 1204 | 387 const struct sized_memory_description specifier_methods_description = { |
| 440 | 388 sizeof (struct specifier_methods), |
| 428 | 389 specifier_methods_description_1 |
| 390 }; | |
| 391 | |
| 1204 | 392 static const struct memory_description specifier_caching_description_1[] = { |
| 428 | 393 { XD_END } |
| 394 }; | |
| 395 | |
| 3092 | 396 #ifdef NEW_GC |
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397 DEFINE_DUMPABLE_INTERNAL_LISP_OBJECT ("specifier-caching", specifier_caching, |
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398 0, specifier_caching_description_1, |
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399 struct specifier_caching); |
| 3092 | 400 #else /* not NEW_GC */ |
| 1204 | 401 static const struct sized_memory_description specifier_caching_description = { |
| 440 | 402 sizeof (struct specifier_caching), |
| 428 | 403 specifier_caching_description_1 |
| 404 }; | |
| 3092 | 405 #endif /* not NEW_GC */ |
| 428 | 406 |
| 1204 | 407 static const struct sized_memory_description specifier_extra_description_map[] |
| 408 = { | |
| 409 { offsetof (Lisp_Specifier, methods) }, | |
| 410 { offsetof (struct specifier_methods, extra_description) }, | |
| 411 { -1 }, | |
| 412 }; | |
| 413 | |
| 414 const struct memory_description specifier_description[] = { | |
| 2367 | 415 { XD_BLOCK_PTR, offsetof (Lisp_Specifier, methods), 1, |
| 2551 | 416 { &specifier_methods_description } }, |
| 440 | 417 { XD_LO_LINK, offsetof (Lisp_Specifier, next_specifier) }, |
| 418 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, global_specs) }, | |
| 419 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, device_specs) }, | |
| 420 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, frame_specs) }, | |
| 421 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, window_specs) }, | |
| 422 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, buffer_specs) }, | |
| 3092 | 423 #ifdef NEW_GC |
| 424 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, caching) }, | |
| 425 #else /* not NEW_GC */ | |
| 2367 | 426 { XD_BLOCK_PTR, offsetof (Lisp_Specifier, caching), 1, |
| 2551 | 427 { &specifier_caching_description } }, |
| 3092 | 428 #endif /* not NEW_GC */ |
| 440 | 429 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, magic_parent) }, |
| 430 { XD_LISP_OBJECT, offsetof (Lisp_Specifier, fallback) }, | |
| 2367 | 431 { XD_BLOCK_ARRAY, offsetof (Lisp_Specifier, data), 1, |
| 2551 | 432 { specifier_extra_description_map } }, |
| 428 | 433 { XD_END } |
| 434 }; | |
| 435 | |
| 1204 | 436 static const struct memory_description specifier_empty_extra_description_1[] = |
| 3659 | 437 { |
| 438 { XD_END } | |
| 439 }; | |
| 1204 | 440 |
| 441 const struct sized_memory_description specifier_empty_extra_description = { | |
| 442 0, specifier_empty_extra_description_1 | |
| 443 }; | |
| 444 | |
| 3263 | 445 #ifdef NEW_GC |
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446 DEFINE_DUMPABLE_SIZABLE_LISP_OBJECT ("specifier", specifier, |
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447 mark_specifier, print_specifier, |
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448 0, specifier_equal, specifier_hash, |
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449 specifier_description, |
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450 sizeof_specifier, |
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451 Lisp_Specifier); |
| 3263 | 452 #else /* not NEW_GC */ |
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453 DEFINE_DUMPABLE_SIZABLE_LISP_OBJECT ("specifier", specifier, |
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454 mark_specifier, print_specifier, |
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455 finalize_specifier, |
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456 specifier_equal, specifier_hash, |
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457 specifier_description, |
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458 sizeof_specifier, |
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459 Lisp_Specifier); |
| 3263 | 460 #endif /* not NEW_GC */ |
| 428 | 461 |
| 462 /************************************************************************/ | |
| 463 /* Creating specifiers */ | |
| 464 /************************************************************************/ | |
| 465 | |
| 466 static struct specifier_methods * | |
| 578 | 467 decode_specifier_type (Lisp_Object type, Error_Behavior errb) |
| 428 | 468 { |
| 469 int i; | |
| 470 | |
| 471 for (i = 0; i < Dynarr_length (the_specifier_type_entry_dynarr); i++) | |
| 472 { | |
| 473 if (EQ (type, Dynarr_at (the_specifier_type_entry_dynarr, i).symbol)) | |
| 474 return Dynarr_at (the_specifier_type_entry_dynarr, i).meths; | |
| 475 } | |
| 476 | |
| 563 | 477 maybe_invalid_argument ("Invalid specifier type", |
| 3659 | 478 type, Qspecifier, errb); |
| 428 | 479 |
| 480 return 0; | |
| 481 } | |
| 482 | |
| 483 static int | |
| 484 valid_specifier_type_p (Lisp_Object type) | |
| 485 { | |
| 486 return decode_specifier_type (type, ERROR_ME_NOT) != 0; | |
| 487 } | |
| 488 | |
| 489 DEFUN ("valid-specifier-type-p", Fvalid_specifier_type_p, 1, 1, 0, /* | |
| 490 Given a SPECIFIER-TYPE, return non-nil if it is valid. | |
| 2953 | 491 Valid types are `generic', `integer', `boolean', `color', `font', `image', |
| 492 `face-boolean', and `toolbar'. | |
| 428 | 493 */ |
| 494 (specifier_type)) | |
| 495 { | |
| 496 return valid_specifier_type_p (specifier_type) ? Qt : Qnil; | |
| 497 } | |
| 498 | |
| 499 DEFUN ("specifier-type-list", Fspecifier_type_list, 0, 0, 0, /* | |
| 500 Return a list of valid specifier types. | |
| 501 */ | |
| 502 ()) | |
| 503 { | |
| 504 return Fcopy_sequence (Vspecifier_type_list); | |
| 505 } | |
| 506 | |
| 507 void | |
| 508 add_entry_to_specifier_type_list (Lisp_Object symbol, | |
| 509 struct specifier_methods *meths) | |
| 510 { | |
| 511 struct specifier_type_entry entry; | |
| 512 | |
| 513 entry.symbol = symbol; | |
| 514 entry.meths = meths; | |
| 515 Dynarr_add (the_specifier_type_entry_dynarr, entry); | |
| 516 Vspecifier_type_list = Fcons (symbol, Vspecifier_type_list); | |
| 517 } | |
| 518 | |
| 519 static Lisp_Object | |
| 520 make_specifier_internal (struct specifier_methods *spec_meths, | |
| 665 | 521 Bytecount data_size, int call_create_meth) |
| 428 | 522 { |
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523 Lisp_Object specifier = |
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524 ALLOC_SIZED_LISP_OBJECT (aligned_sizeof_specifier (data_size), specifier); |
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525 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 526 |
| 527 sp->methods = spec_meths; | |
| 528 sp->global_specs = Qnil; | |
| 529 sp->device_specs = Qnil; | |
| 530 sp->frame_specs = Qnil; | |
| 531 sp->window_specs = make_weak_list (WEAK_LIST_KEY_ASSOC); | |
| 532 sp->buffer_specs = Qnil; | |
| 533 sp->fallback = Qnil; | |
| 534 sp->magic_parent = Qnil; | |
| 535 sp->caching = 0; | |
| 536 sp->next_specifier = Vall_specifiers; | |
| 537 | |
| 538 Vall_specifiers = specifier; | |
| 539 | |
| 540 if (call_create_meth) | |
| 541 { | |
| 542 struct gcpro gcpro1; | |
| 543 GCPRO1 (specifier); | |
| 544 MAYBE_SPECMETH (XSPECIFIER (specifier), create, (specifier)); | |
| 545 UNGCPRO; | |
| 546 } | |
| 547 return specifier; | |
| 548 } | |
| 549 | |
| 550 static Lisp_Object | |
| 551 make_specifier (struct specifier_methods *meths) | |
| 552 { | |
| 553 return make_specifier_internal (meths, meths->extra_data_size, 1); | |
| 554 } | |
| 555 | |
| 556 Lisp_Object | |
| 557 make_magic_specifier (Lisp_Object type) | |
| 558 { | |
| 559 /* This function can GC */ | |
| 560 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 561 Lisp_Object bodily, ghost; | |
| 562 struct gcpro gcpro1; | |
| 563 | |
| 564 bodily = make_specifier (meths); | |
| 565 GCPRO1 (bodily); | |
| 566 ghost = make_specifier_internal (meths, 0, 0); | |
| 567 UNGCPRO; | |
| 568 | |
| 569 /* Connect guys together */ | |
| 570 XSPECIFIER(bodily)->magic_parent = Qt; | |
| 571 XSPECIFIER(bodily)->fallback = ghost; | |
| 572 XSPECIFIER(ghost)->magic_parent = bodily; | |
| 573 | |
| 574 return bodily; | |
| 575 } | |
| 576 | |
| 577 DEFUN ("make-specifier", Fmake_specifier, 1, 1, 0, /* | |
| 578 Return a new specifier object of type TYPE. | |
| 579 | |
| 580 A specifier is an object that can be used to keep track of a property | |
| 581 whose value can be per-buffer, per-window, per-frame, or per-device, | |
| 442 | 582 and can further be restricted to a particular console-type or |
| 583 device-class. Specifiers are used, for example, for the various | |
| 584 built-in properties of a face; this allows a face to have different | |
| 585 values in different frames, buffers, etc. | |
| 586 | |
| 587 When speaking of the value of a specifier, it is important to | |
| 588 distinguish between the *setting* of a specifier, called an | |
| 589 \"instantiator\", and the *actual value*, called an \"instance\". You | |
| 590 put various possible instantiators (i.e. settings) into a specifier | |
| 591 and associate them with particular locales (buffer, window, frame, | |
| 592 device, global), and then the instance (i.e. actual value) is | |
| 593 retrieved in a specific domain (window, frame, device) by looking | |
| 594 through the possible instantiators (i.e. settings). This process is | |
| 595 called \"instantiation\". | |
| 444 | 596 |
| 442 | 597 To put settings into a specifier, use `set-specifier', or the |
| 598 lower-level functions `add-spec-to-specifier' and | |
| 599 `add-spec-list-to-specifier'. You can also temporarily bind a setting | |
| 600 to a specifier using `let-specifier'. To retrieve settings, use | |
| 601 `specifier-specs', or its lower-level counterpart | |
| 2953 | 602 `specifier-spec-list'. |
| 603 | |
| 604 To determine the actual value (i.e. the instance) in a particular domain, use | |
| 605 `specifier-instance'. To determine the corresponding setting that yielded | |
| 606 the value (i.e. the instantiator), use `specifier-instantiator'. | |
| 442 | 607 |
| 608 For more information, see `set-specifier', `specifier-instance', | |
| 428 | 609 `specifier-specs', and `add-spec-to-specifier'; or, for a detailed |
| 442 | 610 description of specifiers, including how exactly the instantiation |
| 611 process works, see the chapter on specifiers in the XEmacs Lisp | |
| 612 Reference Manual. | |
| 428 | 613 |
| 614 TYPE specifies the particular type of specifier, and should be one of | |
| 2953 | 615 the symbols `generic', `integer', `natnum', `boolean', `color', `font', |
| 616 `image', `face-boolean', `display-table', `gutter', `gutter-size', | |
| 617 `gutter-visible' or `toolbar'. | |
| 442 | 618 |
| 619 For more information on particular types of specifiers, see the | |
| 620 functions `make-generic-specifier', `make-integer-specifier', | |
| 621 `make-natnum-specifier', `make-boolean-specifier', | |
| 622 `make-color-specifier', `make-font-specifier', `make-image-specifier', | |
| 623 `make-face-boolean-specifier', `make-gutter-size-specifier', | |
| 624 `make-gutter-visible-specifier', `default-toolbar', `default-gutter', | |
| 625 and `current-display-table'. | |
| 428 | 626 */ |
| 627 (type)) | |
| 628 { | |
| 629 /* This function can GC */ | |
| 442 | 630 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); |
| 428 | 631 |
| 632 return make_specifier (meths); | |
| 633 } | |
| 634 | |
| 635 DEFUN ("specifierp", Fspecifierp, 1, 1, 0, /* | |
| 636 Return t if OBJECT is a specifier. | |
| 637 | |
| 638 A specifier is an object that can be used to keep track of a property | |
| 639 whose value can be per-buffer, per-window, per-frame, or per-device, | |
| 640 and can further be restricted to a particular console-type or device-class. | |
| 641 See `make-specifier'. | |
| 642 */ | |
| 643 (object)) | |
| 644 { | |
| 645 return SPECIFIERP (object) ? Qt : Qnil; | |
| 646 } | |
| 647 | |
| 648 DEFUN ("specifier-type", Fspecifier_type, 1, 1, 0, /* | |
| 649 Return the type of SPECIFIER. | |
| 650 */ | |
| 651 (specifier)) | |
| 652 { | |
| 653 CHECK_SPECIFIER (specifier); | |
| 654 return intern (XSPECIFIER (specifier)->methods->name); | |
| 655 } | |
| 656 | |
| 657 | |
| 658 /************************************************************************/ | |
| 659 /* Locales and domains */ | |
| 660 /************************************************************************/ | |
| 661 | |
| 662 DEFUN ("valid-specifier-locale-p", Fvalid_specifier_locale_p, 1, 1, 0, /* | |
| 663 Return t if LOCALE is a valid specifier locale. | |
| 2953 | 664 Valid locales are devices, frames, windows, buffers, and `global'. |
| 428 | 665 \(nil is not valid.) |
| 666 */ | |
| 667 (locale)) | |
| 668 { | |
| 669 /* This cannot GC. */ | |
| 670 return ((DEVICEP (locale) && DEVICE_LIVE_P (XDEVICE (locale))) || | |
| 671 (FRAMEP (locale) && FRAME_LIVE_P (XFRAME (locale))) || | |
| 672 (BUFFERP (locale) && BUFFER_LIVE_P (XBUFFER (locale))) || | |
| 673 /* dead windows are allowed because they may become live | |
| 674 windows again when a window configuration is restored */ | |
| 675 WINDOWP (locale) || | |
| 676 EQ (locale, Qglobal)) | |
| 677 ? Qt : Qnil; | |
| 678 } | |
| 679 | |
| 680 DEFUN ("valid-specifier-domain-p", Fvalid_specifier_domain_p, 1, 1, 0, /* | |
| 681 Return t if DOMAIN is a valid specifier domain. | |
| 2953 | 682 A domain is used to instantiate a specifier (i.e. determine the specifier's |
| 442 | 683 value in that domain). Valid domains are image instances, windows, frames, |
| 684 and devices. \(nil is not valid.) image instances are pseudo-domains since | |
| 685 instantiation will actually occur in the window the image instance itself is | |
| 686 instantiated in. | |
| 428 | 687 */ |
| 3659 | 688 (domain)) |
| 428 | 689 { |
| 690 /* This cannot GC. */ | |
| 691 return ((DEVICEP (domain) && DEVICE_LIVE_P (XDEVICE (domain))) || | |
| 692 (FRAMEP (domain) && FRAME_LIVE_P (XFRAME (domain))) || | |
| 442 | 693 (WINDOWP (domain) && WINDOW_LIVE_P (XWINDOW (domain))) || |
| 694 /* #### get image instances out of domains! */ | |
| 695 IMAGE_INSTANCEP (domain)) | |
| 428 | 696 ? Qt : Qnil; |
| 697 } | |
| 698 | |
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699 DEFUN ("valid-specifier-locale-type-p", Fvalid_specifier_locale_type_p, 1, |
| 3659 | 700 1, 0, /* |
| 428 | 701 Given a specifier LOCALE-TYPE, return non-nil if it is valid. |
| 2953 | 702 Valid locale types are `global', `device', `frame', `window', and `buffer'. |
| 428 | 703 \(Note, however, that in functions that accept either a locale or a locale |
| 2953 | 704 type, `global' is considered an individual locale.) |
| 428 | 705 */ |
| 3659 | 706 (locale_type)) |
| 428 | 707 { |
| 708 /* This cannot GC. */ | |
| 709 return (EQ (locale_type, Qglobal) || | |
| 710 EQ (locale_type, Qdevice) || | |
| 711 EQ (locale_type, Qframe) || | |
| 712 EQ (locale_type, Qwindow) || | |
| 713 EQ (locale_type, Qbuffer)) ? Qt : Qnil; | |
| 714 } | |
| 715 | |
| 716 static void | |
| 717 check_valid_locale_or_locale_type (Lisp_Object locale) | |
| 718 { | |
| 719 /* This cannot GC. */ | |
| 720 if (EQ (locale, Qall) || | |
| 721 !NILP (Fvalid_specifier_locale_p (locale)) || | |
| 722 !NILP (Fvalid_specifier_locale_type_p (locale))) | |
| 723 return; | |
| 563 | 724 invalid_argument ("Invalid specifier locale or locale type", locale); |
| 428 | 725 } |
| 726 | |
| 727 DEFUN ("specifier-locale-type-from-locale", Fspecifier_locale_type_from_locale, | |
| 728 1, 1, 0, /* | |
| 729 Given a specifier LOCALE, return its type. | |
| 730 */ | |
| 731 (locale)) | |
| 732 { | |
| 733 /* This cannot GC. */ | |
| 734 if (NILP (Fvalid_specifier_locale_p (locale))) | |
| 563 | 735 invalid_argument ("Invalid specifier locale", |
| 3659 | 736 locale); |
| 428 | 737 if (DEVICEP (locale)) return Qdevice; |
| 738 if (FRAMEP (locale)) return Qframe; | |
| 739 if (WINDOWP (locale)) return Qwindow; | |
| 740 if (BUFFERP (locale)) return Qbuffer; | |
| 741 assert (EQ (locale, Qglobal)); | |
| 742 return Qglobal; | |
| 743 } | |
| 744 | |
| 745 static Lisp_Object | |
| 746 decode_locale (Lisp_Object locale) | |
| 747 { | |
| 748 /* This cannot GC. */ | |
| 749 if (NILP (locale)) | |
| 750 return Qglobal; | |
| 751 else if (!NILP (Fvalid_specifier_locale_p (locale))) | |
| 752 return locale; | |
| 753 else | |
| 563 | 754 invalid_argument ("Invalid specifier locale", |
| 3659 | 755 locale); |
| 428 | 756 |
| 757 return Qnil; | |
| 758 } | |
| 759 | |
| 760 static enum spec_locale_type | |
| 761 decode_locale_type (Lisp_Object locale_type) | |
| 762 { | |
| 763 /* This cannot GC. */ | |
| 764 if (EQ (locale_type, Qglobal)) return LOCALE_GLOBAL; | |
| 765 if (EQ (locale_type, Qdevice)) return LOCALE_DEVICE; | |
| 766 if (EQ (locale_type, Qframe)) return LOCALE_FRAME; | |
| 767 if (EQ (locale_type, Qwindow)) return LOCALE_WINDOW; | |
| 768 if (EQ (locale_type, Qbuffer)) return LOCALE_BUFFER; | |
| 769 | |
| 563 | 770 invalid_argument ("Invalid specifier locale type", |
| 3659 | 771 locale_type); |
| 1204 | 772 RETURN_NOT_REACHED (LOCALE_GLOBAL); |
| 428 | 773 } |
| 774 | |
| 775 Lisp_Object | |
| 776 decode_locale_list (Lisp_Object locale) | |
| 777 { | |
| 778 /* This cannot GC. */ | |
| 779 /* The return value of this function must be GCPRO'd. */ | |
| 780 if (NILP (locale)) | |
| 781 { | |
| 782 return list1 (Qall); | |
| 783 } | |
| 784 else if (CONSP (locale)) | |
| 785 { | |
| 786 EXTERNAL_LIST_LOOP_2 (elt, locale) | |
| 787 check_valid_locale_or_locale_type (elt); | |
| 788 return locale; | |
| 789 } | |
| 790 else | |
| 791 { | |
| 792 check_valid_locale_or_locale_type (locale); | |
| 793 return list1 (locale); | |
| 794 } | |
| 795 } | |
| 796 | |
| 797 static enum spec_locale_type | |
| 798 locale_type_from_locale (Lisp_Object locale) | |
| 799 { | |
| 800 return decode_locale_type (Fspecifier_locale_type_from_locale (locale)); | |
| 801 } | |
| 802 | |
| 803 static void | |
| 804 check_valid_domain (Lisp_Object domain) | |
| 805 { | |
| 806 if (NILP (Fvalid_specifier_domain_p (domain))) | |
| 563 | 807 invalid_argument ("Invalid specifier domain", |
| 3659 | 808 domain); |
| 428 | 809 } |
| 810 | |
| 442 | 811 Lisp_Object |
| 428 | 812 decode_domain (Lisp_Object domain) |
| 813 { | |
| 814 if (NILP (domain)) | |
| 815 return Fselected_window (Qnil); | |
| 816 check_valid_domain (domain); | |
| 817 return domain; | |
| 818 } | |
| 819 | |
| 820 | |
| 821 /************************************************************************/ | |
| 822 /* Tags */ | |
| 823 /************************************************************************/ | |
| 824 | |
| 825 DEFUN ("valid-specifier-tag-p", Fvalid_specifier_tag_p, 1, 1, 0, /* | |
| 826 Return non-nil if TAG is a valid specifier tag. | |
| 827 See also `valid-specifier-tag-set-p'. | |
| 828 */ | |
| 829 (tag)) | |
| 830 { | |
| 831 return (valid_console_type_p (tag) || | |
| 832 valid_device_class_p (tag) || | |
| 833 !NILP (assq_no_quit (tag, Vuser_defined_tags))) ? Qt : Qnil; | |
| 834 } | |
| 835 | |
| 836 DEFUN ("valid-specifier-tag-set-p", Fvalid_specifier_tag_set_p, 1, 1, 0, /* | |
| 837 Return non-nil if TAG-SET is a valid specifier tag set. | |
| 838 | |
| 3659 | 839 A specifier tag set is an entity that is attached to an instantiator and can |
| 840 be used to restrict the scope of that instantiator to a particular device | |
| 841 class, device type, or charset. It can also be used to mark instantiators | |
| 842 added by a particular package so that they can be later removed as a group. | |
| 428 | 843 |
| 844 A specifier tag set consists of a list of zero of more specifier tags, | |
| 845 each of which is a symbol that is recognized by XEmacs as a tag. | |
| 846 \(The valid device types and device classes are always tags, as are | |
| 847 any tags defined by `define-specifier-tag'.) It is called a "tag set" | |
| 848 \(as opposed to a list) because the order of the tags or the number of | |
| 849 times a particular tag occurs does not matter. | |
| 850 | |
| 3659 | 851 Each tag has two predicates associated with it, which specify, respectively, |
| 852 whether that tag applies to a particular device and whether it applies to a | |
| 853 particular character set. The predefined tags which are device types and | |
| 854 classes match devices of that type or class. User-defined tags can have any | |
| 855 device predicate, or none (meaning that all devices match). When attempting | |
| 856 to instantiate a specifier, a particular instantiator is only considered if | |
| 857 the device of the domain being instantiated over matches all tags in the tag | |
| 858 set attached to that instantiator. | |
| 859 | |
| 860 If a charset is to be considered--which is only the case for face | |
| 861 instantiators--this consideration may be done twice. The first iteration | |
| 862 pays attention to the character set predicates; if no instantiator can be | |
| 863 found in that case, the search is repeated ignoring the character set | |
| 864 predicates. | |
| 428 | 865 |
| 866 Most of the time, a tag set is not specified, and the instantiator | |
| 867 gets a null tag set, which matches all devices. | |
| 868 */ | |
| 3659 | 869 (tag_set)) |
| 428 | 870 { |
| 871 Lisp_Object rest; | |
| 872 | |
| 873 for (rest = tag_set; !NILP (rest); rest = XCDR (rest)) | |
| 874 { | |
| 875 if (!CONSP (rest)) | |
| 876 return Qnil; | |
| 877 if (NILP (Fvalid_specifier_tag_p (XCAR (rest)))) | |
| 878 return Qnil; | |
| 879 QUIT; | |
| 880 } | |
| 881 return Qt; | |
| 882 } | |
| 883 | |
| 884 Lisp_Object | |
| 885 decode_specifier_tag_set (Lisp_Object tag_set) | |
| 886 { | |
| 887 /* The return value of this function must be GCPRO'd. */ | |
| 888 if (!NILP (Fvalid_specifier_tag_p (tag_set))) | |
| 889 return list1 (tag_set); | |
| 890 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 891 invalid_argument ("Invalid specifier tag-set", |
| 3659 | 892 tag_set); |
| 428 | 893 return tag_set; |
| 894 } | |
| 895 | |
| 896 static Lisp_Object | |
| 897 canonicalize_tag_set (Lisp_Object tag_set) | |
| 898 { | |
| 899 int len = XINT (Flength (tag_set)); | |
| 900 Lisp_Object *tags, rest; | |
| 901 int i, j; | |
| 902 | |
| 903 /* We assume in this function that the tag_set has already been | |
| 904 validated, so there are no surprises. */ | |
| 905 | |
| 906 if (len == 0 || len == 1) | |
| 907 /* most common case */ | |
| 908 return tag_set; | |
| 909 | |
| 910 tags = alloca_array (Lisp_Object, len); | |
| 911 | |
| 912 i = 0; | |
| 913 LIST_LOOP (rest, tag_set) | |
| 914 tags[i++] = XCAR (rest); | |
| 915 | |
| 916 /* Sort the list of tags. We use a bubble sort here (copied from | |
| 917 extent_fragment_update()) -- reduces the function call overhead, | |
| 918 and is the fastest sort for small numbers of items. */ | |
| 919 | |
| 920 for (i = 1; i < len; i++) | |
| 921 { | |
| 922 j = i - 1; | |
| 923 while (j >= 0 && | |
| 793 | 924 qxestrcmp (XSTRING_DATA (XSYMBOL (tags[j])->name), |
| 925 XSTRING_DATA (XSYMBOL (tags[j+1])->name)) > 0) | |
| 428 | 926 { |
| 927 Lisp_Object tmp = tags[j]; | |
| 928 tags[j] = tags[j+1]; | |
| 929 tags[j+1] = tmp; | |
| 930 j--; | |
| 931 } | |
| 932 } | |
| 933 | |
| 934 /* Now eliminate duplicates. */ | |
| 935 | |
| 936 for (i = 1, j = 1; i < len; i++) | |
| 937 { | |
| 938 /* j holds the destination, i the source. */ | |
| 939 if (!EQ (tags[i], tags[i-1])) | |
| 940 tags[j++] = tags[i]; | |
| 941 } | |
| 942 | |
| 943 return Flist (j, tags); | |
| 944 } | |
| 945 | |
| 946 DEFUN ("canonicalize-tag-set", Fcanonicalize_tag_set, 1, 1, 0, /* | |
| 947 Canonicalize the given tag set. | |
| 948 Two canonicalized tag sets can be compared with `equal' to see if they | |
| 949 represent the same tag set. (Specifically, canonicalizing involves | |
| 950 sorting by symbol name and removing duplicates.) | |
| 951 */ | |
| 952 (tag_set)) | |
| 953 { | |
| 954 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 955 invalid_argument ("Invalid tag set", tag_set); |
| 428 | 956 return canonicalize_tag_set (tag_set); |
| 957 } | |
| 958 | |
| 959 static int | |
| 960 device_matches_specifier_tag_set_p (Lisp_Object device, Lisp_Object tag_set) | |
| 961 { | |
| 962 Lisp_Object devtype, devclass, rest; | |
| 963 struct device *d = XDEVICE (device); | |
| 964 | |
| 965 devtype = DEVICE_TYPE (d); | |
| 966 devclass = DEVICE_CLASS (d); | |
| 967 | |
| 968 LIST_LOOP (rest, tag_set) | |
| 969 { | |
| 970 Lisp_Object tag = XCAR (rest); | |
| 971 Lisp_Object assoc; | |
| 972 | |
| 973 if (EQ (tag, devtype) || EQ (tag, devclass)) | |
| 974 continue; | |
| 975 assoc = assq_no_quit (tag, DEVICE_USER_DEFINED_TAGS (d)); | |
| 976 /* other built-in tags (device types/classes) are not in | |
| 977 the user-defined-tags list. */ | |
| 978 if (NILP (assoc) || NILP (XCDR (assoc))) | |
| 979 return 0; | |
| 980 } | |
| 981 | |
| 982 return 1; | |
| 983 } | |
| 984 | |
| 3659 | 985 static int |
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986 charset_matches_specifier_tag_set_p (Lisp_Object charset, Lisp_Object tag_set, |
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987 enum font_specifier_matchspec_stages |
| 3659 | 988 stage) |
| 989 { | |
| 990 Lisp_Object rest; | |
| 991 int res = 0; | |
| 992 | |
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993 assert(stage < NUM_MATCHSPEC_STAGES); |
| 3659 | 994 |
| 995 LIST_LOOP (rest, tag_set) | |
| 996 { | |
| 997 Lisp_Object tag = XCAR (rest); | |
| 998 Lisp_Object assoc; | |
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999 Lisp_Object tag_list = Fgethash (charset, Vcharset_tag_lists, Qnil); |
| 3659 | 1000 |
| 3736 | 1001 /* In the event that, during the creation of a charset, no specifier |
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1002 tags exist for which CHARSET-PREDICATE has been specified, then |
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1003 that charset's entry in Vcharset_tag_lists will be nil, and this |
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1004 charset shouldn't match. */ |
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1005 |
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1006 if (NILP (tag_list)) |
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1007 { |
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1008 return 0; |
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1009 } |
| 3659 | 1010 |
| 1011 /* Now, find out what the pre-calculated value is. */ | |
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1012 assoc = assq_no_quit (tag, tag_list); |
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1013 |
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1014 if (!(NILP (assoc))) |
| 3659 | 1015 { |
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1016 assert (VECTORP (XCDR (assoc))); |
| 3659 | 1017 |
| 1018 /* In the event that a tag specifies a charset, then the specifier | |
| 1019 must match for (this stage and this charset) for all | |
| 1020 charset-specifying tags. */ | |
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1021 if (NILP (XVECTOR_DATA (XCDR (assoc))[stage])) |
| 3659 | 1022 { |
| 1023 /* It doesn't match for this tag, even though the tag | |
| 1024 specifies a charset. Return 0. */ | |
| 1025 return 0; | |
| 1026 } | |
| 1027 | |
| 1028 /* This tag specifies charset limitations, and this charset and | |
| 1029 stage match those charset limitations. | |
| 1030 | |
| 1031 In the event that a later tag specifies charset limitations | |
| 1032 that don't match, the return 0 above prevents us giving a | |
| 1033 positive match. */ | |
| 1034 res = 1; | |
| 1035 } | |
| 1036 } | |
| 1037 | |
| 1038 return res; | |
| 1039 } | |
| 1040 | |
| 1041 | |
| 442 | 1042 DEFUN ("device-matches-specifier-tag-set-p", |
| 1043 Fdevice_matches_specifier_tag_set_p, 2, 2, 0, /* | |
| 428 | 1044 Return non-nil if DEVICE matches specifier tag set TAG-SET. |
| 1045 This means that DEVICE matches each tag in the tag set. (Every | |
| 1046 tag recognized by XEmacs has a predicate associated with it that | |
| 1047 specifies which devices match it.) | |
| 1048 */ | |
| 1049 (device, tag_set)) | |
| 1050 { | |
| 1051 CHECK_LIVE_DEVICE (device); | |
| 1052 | |
| 1053 if (NILP (Fvalid_specifier_tag_set_p (tag_set))) | |
| 563 | 1054 invalid_argument ("Invalid tag set", tag_set); |
| 428 | 1055 |
| 1056 return device_matches_specifier_tag_set_p (device, tag_set) ? Qt : Qnil; | |
| 1057 } | |
| 1058 | |
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1059 /* Call CHARSET_PREDICATE on CHARSET, evaluating it at both stages (initial |
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1060 and final) and returning a size-two vector of the results. */ |
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1061 |
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1062 static Lisp_Object |
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1063 call_charset_predicate (Lisp_Object charset_predicate, Lisp_Object charset) |
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1064 { |
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1065 struct gcpro gcpro1; |
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1066 Lisp_Object charpres = make_vector (NUM_MATCHSPEC_STAGES, Qnil); |
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1067 int max_args = XINT (Ffunction_max_args (charset_predicate)); |
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1068 GCPRO1 (charpres); |
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1069 |
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1070 |
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1071 #define DEFINE_SPECIFIER_TAG_FROB(stage, enumstage) \ |
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1072 do { \ |
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1073 if (max_args > 1) \ |
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1074 { \ |
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1075 XVECTOR_DATA (charpres)[enumstage] = \ |
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1076 call2_trapping_problems \ |
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1077 ("Error during specifier tag charset predicate," \ |
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1078 " stage " #stage, charset_predicate, \ |
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1079 charset, Q##stage, 0); \ |
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1080 } \ |
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1081 else \ |
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1082 { \ |
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1083 XVECTOR_DATA (charpres)[enumstage] = \ |
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1084 call1_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, 0); \ |
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1088 } \ |
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1089 \ |
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1090 if (UNBOUNDP (XVECTOR_DATA (charpres)[enumstage])) \ |
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1091 { \ |
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1092 XVECTOR_DATA (charpres)[enumstage] = Qnil; \ |
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1093 } \ |
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1094 else if (!NILP (XVECTOR_DATA (charpres)[enumstage])) \ |
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1095 { \ |
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1096 /* Don't want refs to random other objects. */ \ |
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1097 XVECTOR_DATA (charpres)[enumstage] = Qt; \ |
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1098 } \ |
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1099 } while (0) |
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1100 |
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1101 DEFINE_SPECIFIER_TAG_FROB (initial, STAGE_INITIAL); |
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1102 DEFINE_SPECIFIER_TAG_FROB (final, STAGE_FINAL); |
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1103 |
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1104 #undef DEFINE_SPECIFIER_TAG_FROB |
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1105 |
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1106 UNGCPRO; |
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1107 |
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1108 return charpres; |
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1109 } |
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1110 |
| 3659 | 1111 Lisp_Object |
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1112 define_specifier_tag (Lisp_Object tag, Lisp_Object device_predicate, |
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1113 Lisp_Object charset_predicate) |
| 428 | 1114 { |
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1115 Lisp_Object assoc = assq_no_quit (tag, Vuser_defined_tags), |
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1116 concons, devcons; |
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1117 int recompute_devices = 0, recompute_charsets = 0; |
| 3659 | 1118 |
| 428 | 1119 if (NILP (assoc)) |
| 1120 { | |
| 3659 | 1121 recompute_devices = recompute_charsets = 1; |
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1122 Vuser_defined_tags = Fcons (list3 (tag, device_predicate, |
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1123 charset_predicate), |
| 3659 | 1124 Vuser_defined_tags); |
| 428 | 1125 DEVICE_LOOP_NO_BREAK (devcons, concons) |
| 1126 { | |
| 1127 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1128 /* Initially set the value to t in case of error | |
| 3659 | 1129 in device_predicate */ |
| 428 | 1130 DEVICE_USER_DEFINED_TAGS (d) = |
| 1131 Fcons (Fcons (tag, Qt), DEVICE_USER_DEFINED_TAGS (d)); | |
| 1132 } | |
| 1133 } | |
| 3659 | 1134 else if (!NILP (device_predicate) && !NILP (XCADR (assoc))) |
| 428 | 1135 { |
| 3659 | 1136 recompute_devices = 1; |
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1137 XCDR (assoc) = list2 (device_predicate, charset_predicate); |
| 428 | 1138 } |
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1139 else if (!NILP (charset_predicate) || !NILP (XCADDR (assoc))) |
| 3659 | 1140 { |
| 1141 /* If there exists a charset_predicate for the tag currently (even if | |
| 1142 the new charset_predicate is nil), or if we're adding one, we need | |
| 1143 to recompute. This contrasts with the device predicates, where we | |
| 1144 don't need to recompute if the old and new device predicates are | |
| 1145 both nil. */ | |
| 1146 | |
| 1147 recompute_charsets = 1; | |
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1148 XCDR (assoc) = list2 (device_predicate, charset_predicate); |
| 3659 | 1149 } |
| 1150 | |
| 1151 /* Recompute the tag values for all devices and charsets, if necessary. In | |
| 1152 the special case where both the old and new device_predicates are nil, | |
| 1153 we know that we don't have to do it for the device. (It's probably | |
| 1154 common for people to call (define-specifier-tag) more than once on the | |
| 1155 same tag, and the most common case is where DEVICE_PREDICATE is not | |
| 1156 specified.) */ | |
| 1157 | |
| 1158 if (recompute_devices) | |
| 428 | 1159 { |
| 1160 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1161 { | |
| 1162 Lisp_Object device = XCAR (devcons); | |
| 1163 assoc = assq_no_quit (tag, | |
| 1164 DEVICE_USER_DEFINED_TAGS (XDEVICE (device))); | |
| 1165 assert (CONSP (assoc)); | |
| 3659 | 1166 if (NILP (device_predicate)) |
| 428 | 1167 XCDR (assoc) = Qt; |
| 1168 else | |
| 3659 | 1169 XCDR (assoc) = !NILP (call1 (device_predicate, device)) ? Qt |
| 1170 : Qnil; | |
| 428 | 1171 } |
| 1172 } | |
| 1173 | |
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1174 if (recompute_charsets) |
| 3659 | 1175 { |
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1176 |
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1177 LIST_LOOP_2 (charset_name, Fcharset_list ()) |
| 3659 | 1178 { |
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1179 Lisp_Object charset = Fget_charset (charset_name); |
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1180 Lisp_Object tag_list = Fgethash (charset, Vcharset_tag_lists, Qnil); |
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1181 Lisp_Object charpres; |
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1182 |
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1183 if (NILP (charset_predicate)) |
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1184 continue; |
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1185 |
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1186 charpres = call_charset_predicate (charset_predicate, charset); |
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1187 |
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1188 assoc = assq_no_quit (tag, tag_list); |
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1189 if (!NILP (assoc)) |
| 3659 | 1190 { |
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1191 assert (CONSP (assoc)); |
| 3659 | 1192 XCDR (assoc) = charpres; |
| 1193 } | |
| 1194 else | |
| 1195 { | |
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1196 Fputhash (charset, Fcons (Fcons (tag, charpres), tag_list), |
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1197 Vcharset_tag_lists); |
| 3659 | 1198 } |
| 1199 } | |
| 1200 } | |
| 1201 return Qt; | |
| 1202 } | |
| 1203 | |
| 1204 DEFUN ("define-specifier-tag", Fdefine_specifier_tag, 1, 3, 0, /* | |
| 1205 Define a new specifier tag. | |
| 1206 | |
| 1207 If DEVICE-PREDICATE is specified, it should be a function of one argument | |
| 1208 \(a device) that specifies whether the tag matches that particular device. | |
| 1209 If DEVICE-PREDICATE is omitted, the tag matches all devices. | |
| 1210 | |
| 1211 If CHARSET-PREDICATE is supplied, it should be a function taking a single | |
| 1212 Lisp character set argument. A tag's charset predicate is primarily used to | |
| 1213 determine what font to use for a given \(set of) charset\(s) when that tag | |
| 1214 is used in a set-face-font call; a non-nil return value indicates that the | |
| 1215 tag matches the charset. | |
| 1216 | |
| 1217 The font matching process also has a concept of stages; the defined stages | |
| 1218 are currently `initial' and `final', and there exist specifier tags with | |
| 1219 those names that correspond to those stages. On X11, 'initial is used when | |
| 1220 the font matching process is looking for fonts that match the desired | |
| 1221 registries of the charset--see the `charset-registries' function. If that | |
| 1222 match process fails, then the 'final tag becomes relevant; this means that a | |
| 1223 more general lookup is desired, and that a font doesn't necessarily have to | |
| 1224 match the desired XLFD for the face, just the charset repertoire for this | |
| 1225 charset. It also means that the charset registry and encoding used will be | |
| 1226 `iso10646-1', and the characters will be converted to display using that | |
| 1227 registry. | |
| 1228 | |
| 1229 If a tag set matches no character set; the two-stage match process will | |
| 1230 ignore the tag on its first pass, but if no match is found, it will respect | |
| 1231 it on the second pass, where character set information is ignored. | |
| 1232 | |
| 1233 You can redefine an existing user-defined specifier tag. However, you | |
| 1234 cannot redefine most of the built-in specifier tags \(the device types and | |
| 1235 classes, `initial', and `final') or the symbols nil, t, `all', or `global'. | |
| 1236 Note that if a device type is not supported in this XEmacs, it will not be | |
| 1237 available as a built-in specifier tag; this is probably something we should | |
| 1238 change. | |
| 1239 */ | |
| 1240 (tag, device_predicate, charset_predicate)) | |
| 1241 { | |
| 1242 CHECK_SYMBOL (tag); | |
| 1243 if (valid_device_class_p (tag) || | |
| 1244 valid_console_type_p (tag) || | |
| 1245 EQ (tag, Qinitial) || EQ (tag, Qfinal)) | |
| 1246 invalid_change ("Cannot redefine built-in specifier tags", tag); | |
| 1247 /* Try to prevent common instantiators and locales from being | |
| 1248 redefined, to reduce ambiguity */ | |
| 1249 if (NILP (tag) || EQ (tag, Qt) || EQ (tag, Qall) || EQ (tag, Qglobal)) | |
| 1250 invalid_change ("Cannot define nil, t, `all', or `global'", tag); | |
| 1251 | |
| 1252 if (!NILP (charset_predicate)) | |
| 1253 { | |
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1254 Lisp_Object min_args = Ffunction_min_args (charset_predicate); |
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1255 Lisp_Object max_args = Ffunction_max_args (charset_predicate); |
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1256 if (!(INTP (min_args) && XINT (min_args) == 1 && |
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1257 INTP (max_args) && XINT (max_args) == 1)) |
| 3659 | 1258 { |
| 1259 /* We only allow the stage argument to be specifed from C. */ | |
| 1260 invalid_change ("Charset predicate must take one argument", | |
| 1261 tag); | |
| 1262 } | |
| 1263 } | |
| 1264 | |
| 1265 return define_specifier_tag(tag, device_predicate, charset_predicate); | |
| 428 | 1266 } |
| 1267 | |
| 1268 /* Called at device-creation time to initialize the user-defined | |
| 1269 tag values for the newly-created device. */ | |
| 1270 | |
| 1271 void | |
| 1272 setup_device_initial_specifier_tags (struct device *d) | |
| 1273 { | |
| 1274 Lisp_Object rest, rest2; | |
| 793 | 1275 Lisp_Object device = wrap_device (d); |
| 3836 | 1276 Lisp_Object device_predicate; |
| 3659 | 1277 int list_len; |
| 793 | 1278 |
| 428 | 1279 DEVICE_USER_DEFINED_TAGS (d) = Fcopy_alist (Vuser_defined_tags); |
| 1280 | |
| 1281 /* Now set up the initial values */ | |
| 1282 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d)) | |
| 1283 XCDR (XCAR (rest)) = Qt; | |
| 1284 | |
| 1285 for (rest = Vuser_defined_tags, rest2 = DEVICE_USER_DEFINED_TAGS (d); | |
| 1286 !NILP (rest); rest = XCDR (rest), rest2 = XCDR (rest2)) | |
| 1287 { | |
| 3659 | 1288 GET_LIST_LENGTH(XCAR(rest), list_len); |
| 1289 | |
| 1290 assert(3 == list_len); | |
| 1291 | |
| 1292 device_predicate = XCADR(XCAR (rest)); | |
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1293 |
| 3659 | 1294 if (NILP (device_predicate)) |
| 1295 { | |
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1296 XCDR (XCAR (rest2)) = Qt; |
| 3659 | 1297 } |
| 428 | 1298 else |
| 3659 | 1299 { |
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1300 device_predicate = !NILP (call_critical_lisp_code |
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1301 (d, device_predicate, device)) |
| 3659 | 1302 ? Qt : Qnil; |
| 3817 | 1303 XCDR (XCAR (rest2)) = device_predicate; |
| 3659 | 1304 } |
| 428 | 1305 } |
| 1306 } | |
| 1307 | |
| 3659 | 1308 void |
| 1309 setup_charset_initial_specifier_tags (Lisp_Object charset) | |
| 1310 { | |
| 1311 Lisp_Object rest, charset_predicate, tag, new_value; | |
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1312 Lisp_Object charset_tag_list = Qnil; |
| 3659 | 1313 |
| 1314 LIST_LOOP (rest, Vuser_defined_tags) | |
| 1315 { | |
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1316 tag = XCAR (XCAR (rest)); |
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1317 charset_predicate = XCADDR (XCAR (rest)); |
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1318 |
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1319 if (NILP (charset_predicate)) |
| 3659 | 1320 { |
| 1321 continue; | |
| 1322 } | |
| 1323 | |
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1324 new_value = call_charset_predicate (charset_predicate, charset); |
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1325 charset_tag_list = Fcons (Fcons (tag, new_value), charset_tag_list); |
| 3659 | 1326 } |
| 1327 | |
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1328 Fputhash (charset, charset_tag_list, Vcharset_tag_lists); |
| 3659 | 1329 } |
| 1330 | |
| 3673 | 1331 /* VM calls this, in vm-multiple-frames-possible-p, in the event that you're |
| 1332 considering taking it out. */ | |
| 3659 | 1333 |
| 442 | 1334 DEFUN ("device-matching-specifier-tag-list", |
| 1335 Fdevice_matching_specifier_tag_list, | |
| 428 | 1336 0, 1, 0, /* |
| 3673 | 1337 Return a list of all specifier tags matching DEVICE. |
| 1338 DEVICE defaults to the selected device if omitted. | |
| 1339 */ | |
| 428 | 1340 (device)) |
| 1341 { | |
| 1342 struct device *d = decode_device (device); | |
| 1343 Lisp_Object rest, list = Qnil; | |
| 1344 struct gcpro gcpro1; | |
| 1345 | |
| 1346 GCPRO1 (list); | |
| 1347 | |
| 1348 LIST_LOOP (rest, DEVICE_USER_DEFINED_TAGS (d)) | |
| 1349 { | |
| 3836 | 1350 if (!NILP (XCDR (XCAR (rest)))) |
| 428 | 1351 list = Fcons (XCAR (XCAR (rest)), list); |
| 1352 } | |
| 1353 | |
| 1354 list = Fnreverse (list); | |
| 1355 list = Fcons (DEVICE_CLASS (d), list); | |
| 1356 list = Fcons (DEVICE_TYPE (d), list); | |
| 1357 | |
| 1358 RETURN_UNGCPRO (list); | |
| 1359 } | |
| 1360 | |
| 1361 DEFUN ("specifier-tag-list", Fspecifier_tag_list, 0, 0, 0, /* | |
| 1362 Return a list of all currently-defined specifier tags. | |
| 1363 This includes the built-in ones (the device types and classes). | |
| 1364 */ | |
| 1365 ()) | |
| 1366 { | |
| 1367 Lisp_Object list = Qnil, rest; | |
| 1368 struct gcpro gcpro1; | |
| 1369 | |
| 1370 GCPRO1 (list); | |
| 1371 | |
| 1372 LIST_LOOP (rest, Vuser_defined_tags) | |
| 1373 list = Fcons (XCAR (XCAR (rest)), list); | |
| 1374 | |
| 1375 list = Fnreverse (list); | |
| 1376 list = nconc2 (Fcopy_sequence (Vdevice_class_list), list); | |
| 1377 list = nconc2 (Fcopy_sequence (Vconsole_type_list), list); | |
| 1378 | |
| 1379 RETURN_UNGCPRO (list); | |
| 1380 } | |
| 1381 | |
| 3659 | 1382 DEFUN ("specifier-tag-device-predicate", Fspecifier_tag_device_predicate, |
| 1383 1, 1, 0, /* | |
| 1384 Return the device predicate for the given specifier tag. | |
| 428 | 1385 */ |
| 1386 (tag)) | |
| 1387 { | |
| 1388 /* The return value of this function must be GCPRO'd. */ | |
| 1389 CHECK_SYMBOL (tag); | |
| 1390 | |
| 1391 if (NILP (Fvalid_specifier_tag_p (tag))) | |
| 563 | 1392 invalid_argument ("Invalid specifier tag", |
| 3659 | 1393 tag); |
| 428 | 1394 |
| 1395 /* Make up some predicates for the built-in types */ | |
| 1396 | |
| 1397 if (valid_console_type_p (tag)) | |
| 1398 return list3 (Qlambda, list1 (Qdevice), | |
| 1399 list3 (Qeq, list2 (Qquote, tag), | |
| 1400 list2 (Qconsole_type, Qdevice))); | |
| 1401 | |
| 1402 if (valid_device_class_p (tag)) | |
| 1403 return list3 (Qlambda, list1 (Qdevice), | |
| 1404 list3 (Qeq, list2 (Qquote, tag), | |
| 1405 list2 (Qdevice_class, Qdevice))); | |
| 1406 | |
| 3659 | 1407 return XCADR (assq_no_quit (tag, Vuser_defined_tags)); |
| 1408 } | |
| 1409 | |
| 1410 DEFUN ("specifier-tag-charset-predicate", Fspecifier_tag_charset_predicate, | |
| 1411 1, 1, 0, /* | |
| 3673 | 1412 Return the charset predicate for the given specifier tag. |
| 1413 */ | |
| 3659 | 1414 (tag)) |
| 1415 { | |
| 1416 /* The return value of this function must be GCPRO'd. */ | |
| 1417 CHECK_SYMBOL (tag); | |
| 1418 | |
| 1419 if (NILP (Fvalid_specifier_tag_p (tag))) | |
| 1420 invalid_argument ("Invalid specifier tag", | |
| 1421 tag); | |
| 1422 | |
| 1423 return XCADDR (assq_no_quit (tag, Vuser_defined_tags)); | |
| 428 | 1424 } |
| 1425 | |
| 1426 /* Return true if A "matches" B. If EXACT_P is 0, A must be a subset of B. | |
| 3659 | 1427 Otherwise, A must be `equal' to B. The sets must be canonicalized. */ |
| 428 | 1428 static int |
| 1429 tag_sets_match_p (Lisp_Object a, Lisp_Object b, int exact_p) | |
| 1430 { | |
| 1431 if (!exact_p) | |
| 1432 { | |
| 1433 while (!NILP (a) && !NILP (b)) | |
| 1434 { | |
| 1435 if (EQ (XCAR (a), XCAR (b))) | |
| 1436 a = XCDR (a); | |
| 1437 b = XCDR (b); | |
| 1438 } | |
| 1439 | |
| 1440 return NILP (a); | |
| 1441 } | |
| 1442 else | |
| 1443 { | |
| 1444 while (!NILP (a) && !NILP (b)) | |
| 1445 { | |
| 1446 if (!EQ (XCAR (a), XCAR (b))) | |
| 1447 return 0; | |
| 1448 a = XCDR (a); | |
| 1449 b = XCDR (b); | |
| 1450 } | |
| 1451 | |
| 1452 return NILP (a) && NILP (b); | |
| 1453 } | |
| 1454 } | |
| 1455 | |
| 1456 | |
| 1457 /************************************************************************/ | |
| 1458 /* Spec-lists and inst-lists */ | |
| 1459 /************************************************************************/ | |
| 1460 | |
| 1461 static Lisp_Object | |
| 1462 call_validate_method (Lisp_Object boxed_method, Lisp_Object instantiator) | |
| 1463 { | |
| 1464 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (instantiator); | |
| 1465 return Qt; | |
| 1466 } | |
| 1467 | |
| 1468 static Lisp_Object | |
| 1469 check_valid_instantiator (Lisp_Object instantiator, | |
| 1470 struct specifier_methods *meths, | |
| 578 | 1471 Error_Behavior errb) |
| 428 | 1472 { |
| 1473 if (meths->validate_method) | |
| 1474 { | |
| 1475 Lisp_Object retval; | |
| 1476 | |
| 1477 if (ERRB_EQ (errb, ERROR_ME)) | |
| 1478 { | |
| 1479 (meths->validate_method) (instantiator); | |
| 1480 retval = Qt; | |
| 1481 } | |
| 1482 else | |
| 1483 { | |
| 1484 Lisp_Object opaque = make_opaque_ptr ((void *) | |
| 1485 meths->validate_method); | |
| 1486 struct gcpro gcpro1; | |
| 1487 | |
| 1488 GCPRO1 (opaque); | |
| 1489 retval = call_with_suspended_errors | |
| 1490 ((lisp_fn_t) call_validate_method, | |
| 1491 Qnil, Qspecifier, errb, 2, opaque, instantiator); | |
| 1492 | |
| 1493 free_opaque_ptr (opaque); | |
| 1494 UNGCPRO; | |
| 1495 } | |
| 1496 | |
| 1497 return retval; | |
| 1498 } | |
| 1499 return Qt; | |
| 1500 } | |
| 1501 | |
| 1502 DEFUN ("check-valid-instantiator", Fcheck_valid_instantiator, 2, 2, 0, /* | |
| 1503 Signal an error if INSTANTIATOR is invalid for SPECIFIER-TYPE. | |
| 1504 */ | |
| 1505 (instantiator, specifier_type)) | |
| 1506 { | |
| 1507 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 1508 ERROR_ME); | |
| 1509 | |
| 1510 return check_valid_instantiator (instantiator, meths, ERROR_ME); | |
| 1511 } | |
| 1512 | |
| 1513 DEFUN ("valid-instantiator-p", Fvalid_instantiator_p, 2, 2, 0, /* | |
| 1514 Return non-nil if INSTANTIATOR is valid for SPECIFIER-TYPE. | |
| 1515 */ | |
| 1516 (instantiator, specifier_type)) | |
| 1517 { | |
| 1518 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 1519 ERROR_ME); | |
| 1520 | |
| 1521 return check_valid_instantiator (instantiator, meths, ERROR_ME_NOT); | |
| 1522 } | |
| 1523 | |
| 1524 static Lisp_Object | |
| 1525 check_valid_inst_list (Lisp_Object inst_list, struct specifier_methods *meths, | |
| 578 | 1526 Error_Behavior errb) |
| 428 | 1527 { |
| 2159 | 1528 EXTERNAL_LIST_LOOP_2 (inst_pair, inst_list) |
| 428 | 1529 { |
| 2159 | 1530 Lisp_Object tag_set; |
| 1531 | |
| 1532 if (!CONSP (inst_pair)) | |
| 428 | 1533 { |
| 563 | 1534 maybe_sferror ( |
| 3659 | 1535 "Invalid instantiator pair", inst_pair, |
| 1536 Qspecifier, errb); | |
| 428 | 1537 return Qnil; |
| 1538 } | |
| 1539 if (NILP (Fvalid_specifier_tag_set_p (tag_set = XCAR (inst_pair)))) | |
| 1540 { | |
| 563 | 1541 maybe_invalid_argument ( |
| 3659 | 1542 "Invalid specifier tag", tag_set, |
| 1543 Qspecifier, errb); | |
| 428 | 1544 return Qnil; |
| 1545 } | |
| 1546 | |
| 1547 if (NILP (check_valid_instantiator (XCDR (inst_pair), meths, errb))) | |
| 1548 return Qnil; | |
| 1549 } | |
| 1550 | |
| 1551 return Qt; | |
| 1552 } | |
| 1553 | |
| 1554 DEFUN ("check-valid-inst-list", Fcheck_valid_inst_list, 2, 2, 0, /* | |
| 1555 Signal an error if INST-LIST is invalid for specifier type TYPE. | |
| 1556 */ | |
| 1557 (inst_list, type)) | |
| 1558 { | |
| 1559 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1560 | |
| 1561 return check_valid_inst_list (inst_list, meths, ERROR_ME); | |
| 1562 } | |
| 1563 | |
| 1564 DEFUN ("valid-inst-list-p", Fvalid_inst_list_p, 2, 2, 0, /* | |
| 1565 Return non-nil if INST-LIST is valid for specifier type TYPE. | |
| 1566 */ | |
| 1567 (inst_list, type)) | |
| 1568 { | |
| 1569 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1570 | |
| 1571 return check_valid_inst_list (inst_list, meths, ERROR_ME_NOT); | |
| 1572 } | |
| 1573 | |
| 1574 static Lisp_Object | |
| 1575 check_valid_spec_list (Lisp_Object spec_list, struct specifier_methods *meths, | |
| 578 | 1576 Error_Behavior errb) |
| 428 | 1577 { |
| 2159 | 1578 EXTERNAL_LIST_LOOP_2 (spec, spec_list) |
| 428 | 1579 { |
| 2159 | 1580 Lisp_Object locale; |
| 1581 if (!CONSP (spec)) | |
| 428 | 1582 { |
| 563 | 1583 maybe_sferror ( |
| 3659 | 1584 "Invalid specification list", spec_list, |
| 1585 Qspecifier, errb); | |
| 428 | 1586 return Qnil; |
| 1587 } | |
| 1588 if (NILP (Fvalid_specifier_locale_p (locale = XCAR (spec)))) | |
| 1589 { | |
| 563 | 1590 maybe_invalid_argument ( |
| 3659 | 1591 "Invalid specifier locale", locale, |
| 1592 Qspecifier, errb); | |
| 428 | 1593 return Qnil; |
| 1594 } | |
| 1595 | |
| 1596 if (NILP (check_valid_inst_list (XCDR (spec), meths, errb))) | |
| 1597 return Qnil; | |
| 1598 } | |
| 1599 | |
| 1600 return Qt; | |
| 1601 } | |
| 1602 | |
| 1603 DEFUN ("check-valid-spec-list", Fcheck_valid_spec_list, 2, 2, 0, /* | |
| 1604 Signal an error if SPEC-LIST is invalid for specifier type TYPE. | |
| 1605 */ | |
| 1606 (spec_list, type)) | |
| 1607 { | |
| 1608 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1609 | |
| 1610 return check_valid_spec_list (spec_list, meths, ERROR_ME); | |
| 1611 } | |
| 1612 | |
| 1613 DEFUN ("valid-spec-list-p", Fvalid_spec_list_p, 2, 2, 0, /* | |
| 1614 Return non-nil if SPEC-LIST is valid for specifier type TYPE. | |
| 1615 */ | |
| 1616 (spec_list, type)) | |
| 1617 { | |
| 1618 struct specifier_methods *meths = decode_specifier_type (type, ERROR_ME); | |
| 1619 | |
| 1620 return check_valid_spec_list (spec_list, meths, ERROR_ME_NOT); | |
| 1621 } | |
| 1622 | |
| 1623 enum spec_add_meth | |
| 1624 decode_how_to_add_specification (Lisp_Object how_to_add) | |
| 1625 { | |
| 1626 if (NILP (how_to_add) || EQ (Qremove_tag_set_prepend, how_to_add)) | |
| 1627 return SPEC_REMOVE_TAG_SET_PREPEND; | |
| 1628 if (EQ (Qremove_tag_set_append, how_to_add)) | |
| 1629 return SPEC_REMOVE_TAG_SET_APPEND; | |
| 1630 if (EQ (Qappend, how_to_add)) | |
| 1631 return SPEC_APPEND; | |
| 1632 if (EQ (Qprepend, how_to_add)) | |
| 1633 return SPEC_PREPEND; | |
| 1634 if (EQ (Qremove_locale, how_to_add)) | |
| 1635 return SPEC_REMOVE_LOCALE; | |
| 1636 if (EQ (Qremove_locale_type, how_to_add)) | |
| 1637 return SPEC_REMOVE_LOCALE_TYPE; | |
| 1638 if (EQ (Qremove_all, how_to_add)) | |
| 1639 return SPEC_REMOVE_ALL; | |
| 1640 | |
| 563 | 1641 invalid_constant ("Invalid `how-to-add' flag", how_to_add); |
| 428 | 1642 |
| 1204 | 1643 RETURN_NOT_REACHED (SPEC_PREPEND); |
| 428 | 1644 } |
| 1645 | |
| 1646 /* Given a specifier object SPEC, return bodily specifier if SPEC is a | |
| 1647 ghost specifier, otherwise return the object itself | |
| 1648 */ | |
| 1649 static Lisp_Object | |
| 1650 bodily_specifier (Lisp_Object spec) | |
| 1651 { | |
| 1652 return (GHOST_SPECIFIER_P (XSPECIFIER (spec)) | |
| 1653 ? XSPECIFIER(spec)->magic_parent : spec); | |
| 1654 } | |
| 1655 | |
| 1656 /* Signal error if (specifier SPEC is read-only. | |
| 1657 Read only are ghost specifiers unless Vunlock_ghost_specifiers is | |
| 1658 non-nil. All other specifiers are read-write. | |
| 1659 */ | |
| 1660 static void | |
| 1661 check_modifiable_specifier (Lisp_Object spec) | |
| 1662 { | |
| 1663 if (NILP (Vunlock_ghost_specifiers) | |
| 1664 && GHOST_SPECIFIER_P (XSPECIFIER (spec))) | |
| 563 | 1665 signal_error (Qsetting_constant, |
| 1666 "Attempt to modify read-only specifier", | |
| 1667 spec); | |
| 428 | 1668 } |
| 1669 | |
| 1670 int | |
| 1671 unlock_ghost_specifiers_protected (void) | |
| 1672 { | |
| 853 | 1673 return internal_bind_lisp_object (&Vunlock_ghost_specifiers, Qt); |
| 428 | 1674 } |
| 1675 | |
| 1676 /* This gets hit so much that the function call overhead had a | |
| 1677 measurable impact (according to Quantify). #### We should figure | |
| 1678 out the frequency with which this is called with the various types | |
| 1679 and reorder the check accordingly. */ | |
| 1680 #define SPECIFIER_GET_SPEC_LIST(specifier, type) \ | |
| 3659 | 1681 (type == LOCALE_GLOBAL ? &(XSPECIFIER (specifier)->global_specs) : \ |
| 1682 type == LOCALE_DEVICE ? &(XSPECIFIER (specifier)->device_specs) : \ | |
| 1683 type == LOCALE_FRAME ? &(XSPECIFIER (specifier)->frame_specs) : \ | |
| 1684 type == LOCALE_WINDOW ? &(XWEAK_LIST_LIST \ | |
| 1685 (XSPECIFIER (specifier)->window_specs)) : \ | |
| 1686 type == LOCALE_BUFFER ? &(XSPECIFIER (specifier)->buffer_specs) : \ | |
| 1687 0) | |
| 428 | 1688 |
| 1689 static Lisp_Object * | |
| 1690 specifier_get_inst_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1691 enum spec_locale_type type) | |
| 1692 { | |
| 1693 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1694 Lisp_Object specification; | |
| 1695 | |
| 1696 if (type == LOCALE_GLOBAL) | |
| 1697 return spec_list; | |
| 1698 /* Calling assq_no_quit when it is just going to return nil anyhow | |
| 1699 is extremely expensive. So sayeth Quantify. */ | |
| 1700 if (!CONSP (*spec_list)) | |
| 1701 return 0; | |
| 1702 specification = assq_no_quit (locale, *spec_list); | |
| 1703 if (NILP (specification)) | |
| 1704 return 0; | |
| 1705 return &XCDR (specification); | |
| 1706 } | |
| 1707 | |
| 1708 /* For the given INST_LIST, return a new INST_LIST containing all elements | |
| 1709 where TAG-SET matches the element's tag set. EXACT_P indicates whether | |
| 1710 the match must be exact (as opposed to a subset). SHORT_P indicates | |
| 1711 that the short form (for `specifier-specs') should be returned if | |
| 1712 possible. If COPY_TREE_P, `copy-tree' is used to ensure that no | |
| 1713 elements of the new list are shared with the initial list. | |
| 1714 */ | |
| 1715 | |
| 1716 static Lisp_Object | |
| 1717 specifier_process_inst_list (Lisp_Object inst_list, | |
| 1718 Lisp_Object tag_set, int exact_p, | |
| 1719 int short_p, int copy_tree_p) | |
| 1720 { | |
| 1721 Lisp_Object retval = Qnil; | |
| 1722 Lisp_Object rest; | |
| 1723 struct gcpro gcpro1; | |
| 1724 | |
| 1725 GCPRO1 (retval); | |
| 1726 LIST_LOOP (rest, inst_list) | |
| 1727 { | |
| 1728 Lisp_Object tagged_inst = XCAR (rest); | |
| 1729 Lisp_Object tagged_inst_tag = XCAR (tagged_inst); | |
| 1730 if (tag_sets_match_p (tag_set, tagged_inst_tag, exact_p)) | |
| 1731 { | |
| 1732 if (short_p && NILP (tagged_inst_tag)) | |
| 1733 retval = Fcons (copy_tree_p ? | |
| 1734 Fcopy_tree (XCDR (tagged_inst), Qt) : | |
| 1735 XCDR (tagged_inst), | |
| 1736 retval); | |
| 1737 else | |
| 1738 retval = Fcons (copy_tree_p ? Fcopy_tree (tagged_inst, Qt) : | |
| 1739 tagged_inst, retval); | |
| 1740 } | |
| 1741 } | |
| 1742 retval = Fnreverse (retval); | |
| 1743 UNGCPRO; | |
| 1744 /* If there is a single instantiator and the short form is | |
| 1745 requested, return just the instantiator (rather than a one-element | |
| 1746 list of it) unless it is nil (so that it can be distinguished from | |
| 1747 no instantiators at all). */ | |
| 1748 if (short_p && CONSP (retval) && !NILP (XCAR (retval)) && | |
| 1749 NILP (XCDR (retval))) | |
| 1750 return XCAR (retval); | |
| 1751 else | |
| 1752 return retval; | |
| 1753 } | |
| 1754 | |
| 1755 static Lisp_Object | |
| 1756 specifier_get_external_inst_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1757 enum spec_locale_type type, | |
| 1758 Lisp_Object tag_set, int exact_p, | |
| 1759 int short_p, int copy_tree_p) | |
| 1760 { | |
| 1761 Lisp_Object *inst_list = specifier_get_inst_list (specifier, locale, | |
| 1762 type); | |
| 1763 if (!inst_list || NILP (*inst_list)) | |
| 1764 { | |
| 2953 | 1765 /* nil for *inst_list should only occur in `global' */ |
| 428 | 1766 assert (!inst_list || EQ (locale, Qglobal)); |
| 1767 return Qnil; | |
| 1768 } | |
| 1769 | |
| 1770 return specifier_process_inst_list (*inst_list, tag_set, exact_p, | |
| 1771 short_p, copy_tree_p); | |
| 1772 } | |
| 1773 | |
| 1774 static Lisp_Object | |
| 1775 specifier_get_external_spec_list (Lisp_Object specifier, | |
| 1776 enum spec_locale_type type, | |
| 1777 Lisp_Object tag_set, int exact_p) | |
| 1778 { | |
| 1779 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1780 Lisp_Object retval = Qnil; | |
| 1781 Lisp_Object rest; | |
| 1782 struct gcpro gcpro1; | |
| 1783 | |
| 1784 assert (type != LOCALE_GLOBAL); | |
| 1785 /* We're about to let stuff go external; make sure there aren't | |
| 1786 any dead objects */ | |
| 1787 *spec_list = cleanup_assoc_list (*spec_list); | |
| 1788 | |
| 1789 GCPRO1 (retval); | |
| 1790 LIST_LOOP (rest, *spec_list) | |
| 1791 { | |
| 1792 Lisp_Object spec = XCAR (rest); | |
| 1793 Lisp_Object inst_list = | |
| 1794 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 1); | |
| 1795 if (!NILP (inst_list)) | |
| 1796 retval = Fcons (Fcons (XCAR (spec), inst_list), retval); | |
| 1797 } | |
| 1798 RETURN_UNGCPRO (Fnreverse (retval)); | |
| 1799 } | |
| 1800 | |
| 1801 static Lisp_Object * | |
| 1802 specifier_new_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 1803 enum spec_locale_type type) | |
| 1804 { | |
| 1805 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1806 Lisp_Object new_spec = Fcons (locale, Qnil); | |
| 1807 assert (type != LOCALE_GLOBAL); | |
| 1808 *spec_list = Fcons (new_spec, *spec_list); | |
| 1809 return &XCDR (new_spec); | |
| 1810 } | |
| 1811 | |
| 1812 /* For the given INST_LIST, return a new list comprised of elements | |
| 1813 where TAG_SET does not match the element's tag set. This operation | |
| 1814 is destructive. */ | |
| 1815 | |
| 1816 static Lisp_Object | |
| 1817 specifier_process_remove_inst_list (Lisp_Object inst_list, | |
| 1818 Lisp_Object tag_set, int exact_p, | |
| 1819 int *was_removed) | |
| 1820 { | |
| 1821 Lisp_Object prev = Qnil, rest; | |
| 1822 | |
| 1823 *was_removed = 0; | |
| 1824 | |
| 1825 LIST_LOOP (rest, inst_list) | |
| 1826 { | |
| 1827 if (tag_sets_match_p (tag_set, XCAR (XCAR (rest)), exact_p)) | |
| 1828 { | |
| 1829 /* time to remove. */ | |
| 1830 *was_removed = 1; | |
| 1831 if (NILP (prev)) | |
| 1832 inst_list = XCDR (rest); | |
| 1833 else | |
| 1834 XCDR (prev) = XCDR (rest); | |
| 1835 } | |
| 1836 else | |
| 1837 prev = rest; | |
| 1838 } | |
| 1839 | |
| 1840 return inst_list; | |
| 1841 } | |
| 1842 | |
| 1843 static void | |
| 1844 specifier_remove_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 1845 enum spec_locale_type type, | |
| 1846 Lisp_Object tag_set, int exact_p) | |
| 1847 { | |
| 1848 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1849 Lisp_Object assoc; | |
| 1850 int was_removed; | |
| 1851 | |
| 1852 if (type == LOCALE_GLOBAL) | |
| 1853 *spec_list = specifier_process_remove_inst_list (*spec_list, tag_set, | |
| 1854 exact_p, &was_removed); | |
| 1855 else | |
| 1856 { | |
| 1857 assoc = assq_no_quit (locale, *spec_list); | |
| 1858 if (NILP (assoc)) | |
| 1859 /* this locale is not found. */ | |
| 1860 return; | |
| 1861 XCDR (assoc) = specifier_process_remove_inst_list (XCDR (assoc), | |
| 1862 tag_set, exact_p, | |
| 1863 &was_removed); | |
| 1864 if (NILP (XCDR (assoc))) | |
| 1865 /* no inst-pairs left; remove this locale entirely. */ | |
| 1866 *spec_list = remassq_no_quit (locale, *spec_list); | |
| 1867 } | |
| 1868 | |
| 1869 if (was_removed) | |
| 1870 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change, | |
| 1871 (bodily_specifier (specifier), locale)); | |
| 1872 } | |
| 1873 | |
| 1874 static void | |
| 1875 specifier_remove_locale_type (Lisp_Object specifier, | |
| 1876 enum spec_locale_type type, | |
| 1877 Lisp_Object tag_set, int exact_p) | |
| 1878 { | |
| 1879 Lisp_Object *spec_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 1880 Lisp_Object prev = Qnil, rest; | |
| 1881 | |
| 1882 assert (type != LOCALE_GLOBAL); | |
| 1883 LIST_LOOP (rest, *spec_list) | |
| 1884 { | |
| 1885 int was_removed; | |
| 1886 int remove_spec = 0; | |
| 1887 Lisp_Object spec = XCAR (rest); | |
| 1888 | |
| 1889 /* There may be dead objects floating around */ | |
| 1890 /* remember, dead windows can become alive again. */ | |
| 1891 if (!WINDOWP (XCAR (spec)) && object_dead_p (XCAR (spec))) | |
| 1892 { | |
| 1893 remove_spec = 1; | |
| 1894 was_removed = 0; | |
| 1895 } | |
| 1896 else | |
| 1897 { | |
| 1898 XCDR (spec) = specifier_process_remove_inst_list (XCDR (spec), | |
| 1899 tag_set, exact_p, | |
| 1900 &was_removed); | |
| 1901 if (NILP (XCDR (spec))) | |
| 1902 remove_spec = 1; | |
| 1903 } | |
| 1904 | |
| 1905 if (remove_spec) | |
| 1906 { | |
| 1907 if (NILP (prev)) | |
| 1908 *spec_list = XCDR (rest); | |
| 1909 else | |
| 1910 XCDR (prev) = XCDR (rest); | |
| 1911 } | |
| 1912 else | |
| 1913 prev = rest; | |
| 1914 | |
| 1915 if (was_removed) | |
| 1916 MAYBE_SPECMETH (XSPECIFIER (specifier), after_change, | |
| 1917 (bodily_specifier (specifier), XCAR (spec))); | |
| 1918 } | |
| 1919 } | |
| 1920 | |
| 1921 /* NEW_LIST is going to be added to INST_LIST, with add method ADD_METH. | |
| 1922 Frob INST_LIST according to ADD_METH. No need to call an after-change | |
| 1923 function; the calling function will do this. Return either SPEC_PREPEND | |
| 1924 or SPEC_APPEND, indicating whether to prepend or append the NEW_LIST. */ | |
| 1925 | |
| 1926 static enum spec_add_meth | |
| 1927 handle_multiple_add_insts (Lisp_Object *inst_list, | |
| 1928 Lisp_Object new_list, | |
| 1929 enum spec_add_meth add_meth) | |
| 1930 { | |
| 1931 switch (add_meth) | |
| 1932 { | |
| 1933 case SPEC_REMOVE_TAG_SET_APPEND: | |
| 1934 add_meth = SPEC_APPEND; | |
| 1935 goto remove_tag_set; | |
| 1936 case SPEC_REMOVE_TAG_SET_PREPEND: | |
| 1937 add_meth = SPEC_PREPEND; | |
| 1938 remove_tag_set: | |
| 1939 { | |
| 1940 Lisp_Object rest; | |
| 1941 | |
| 1942 LIST_LOOP (rest, new_list) | |
| 1943 { | |
| 1944 Lisp_Object canontag = canonicalize_tag_set (XCAR (XCAR (rest))); | |
| 1945 struct gcpro gcpro1; | |
| 1946 | |
| 1947 GCPRO1 (canontag); | |
| 1948 /* pull out all elements from the existing list with the | |
| 1949 same tag as any tags in NEW_LIST. */ | |
| 1950 *inst_list = remassoc_no_quit (canontag, *inst_list); | |
| 1951 UNGCPRO; | |
| 1952 } | |
| 1953 } | |
| 1954 return add_meth; | |
| 1955 case SPEC_REMOVE_LOCALE: | |
| 1956 *inst_list = Qnil; | |
| 1957 return SPEC_PREPEND; | |
| 1958 case SPEC_APPEND: | |
| 1959 return add_meth; | |
| 1960 default: | |
| 1961 return SPEC_PREPEND; | |
| 1962 } | |
| 1963 } | |
| 1964 | |
| 1965 /* Given a LOCALE and INST_LIST that is going to be added to SPECIFIER, | |
| 1966 copy, canonicalize, and call the going_to_add methods as necessary | |
| 1967 to produce a new list that is the one that really will be added | |
| 1968 to the specifier. */ | |
| 1969 | |
| 1970 static Lisp_Object | |
| 1971 build_up_processed_list (Lisp_Object specifier, Lisp_Object locale, | |
| 1972 Lisp_Object inst_list) | |
| 1973 { | |
| 1974 /* The return value of this function must be GCPRO'd. */ | |
| 1975 Lisp_Object rest, list_to_build_up = Qnil; | |
| 440 | 1976 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 1977 struct gcpro gcpro1; |
| 1978 | |
| 1979 GCPRO1 (list_to_build_up); | |
| 1980 LIST_LOOP (rest, inst_list) | |
| 1981 { | |
| 1982 Lisp_Object tag_set = XCAR (XCAR (rest)); | |
| 1983 Lisp_Object sub_inst_list = Qnil; | |
| 434 | 1984 Lisp_Object instantiator; |
| 428 | 1985 struct gcpro ngcpro1, ngcpro2; |
| 1986 | |
| 434 | 1987 if (HAS_SPECMETH_P (sp, copy_instantiator)) |
| 1988 instantiator = SPECMETH (sp, copy_instantiator, | |
| 1989 (XCDR (XCAR (rest)))); | |
| 1990 else | |
| 1991 instantiator = Fcopy_tree (XCDR (XCAR (rest)), Qt); | |
| 1992 | |
| 428 | 1993 NGCPRO2 (instantiator, sub_inst_list); |
| 1994 /* call the will-add method; it may GC */ | |
| 1995 sub_inst_list = HAS_SPECMETH_P (sp, going_to_add) ? | |
| 1996 SPECMETH (sp, going_to_add, | |
| 1997 (bodily_specifier (specifier), locale, | |
| 1998 tag_set, instantiator)) : | |
| 1999 Qt; | |
| 2000 if (EQ (sub_inst_list, Qt)) | |
| 2001 /* no change here. */ | |
| 2002 sub_inst_list = list1 (Fcons (canonicalize_tag_set (tag_set), | |
| 2003 instantiator)); | |
| 2004 else | |
| 2005 { | |
| 2006 /* now canonicalize all the tag sets in the new objects */ | |
| 2007 Lisp_Object rest2; | |
| 2008 LIST_LOOP (rest2, sub_inst_list) | |
| 2009 XCAR (XCAR (rest2)) = canonicalize_tag_set (XCAR (XCAR (rest2))); | |
| 2010 } | |
| 2011 | |
| 2012 list_to_build_up = nconc2 (sub_inst_list, list_to_build_up); | |
| 2013 NUNGCPRO; | |
| 2014 } | |
| 2015 | |
| 2016 RETURN_UNGCPRO (Fnreverse (list_to_build_up)); | |
| 2017 } | |
| 2018 | |
| 2019 /* Add a specification (locale and instantiator list) to a specifier. | |
| 2020 ADD_METH specifies what to do with existing specifications in the | |
| 2021 specifier, and is an enum that corresponds to the values in | |
| 2022 `add-spec-to-specifier'. The calling routine is responsible for | |
| 2023 validating LOCALE and INST-LIST, but the tag-sets in INST-LIST | |
| 2024 do not need to be canonicalized. */ | |
| 2025 | |
| 3659 | 2026 /* #### I really need to rethink the after-change |
| 2027 functions to make them easier to use and more efficient. */ | |
| 428 | 2028 |
| 2029 static void | |
| 2030 specifier_add_spec (Lisp_Object specifier, Lisp_Object locale, | |
| 2031 Lisp_Object inst_list, enum spec_add_meth add_meth) | |
| 2032 { | |
| 440 | 2033 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2034 enum spec_locale_type type = locale_type_from_locale (locale); |
| 2035 Lisp_Object *orig_inst_list, tem; | |
| 2036 Lisp_Object list_to_build_up = Qnil; | |
| 2037 struct gcpro gcpro1; | |
| 2038 | |
| 1015 | 2039 if (NILP (inst_list)) |
| 2040 return; | |
| 2041 | |
| 428 | 2042 GCPRO1 (list_to_build_up); |
| 2043 list_to_build_up = build_up_processed_list (specifier, locale, inst_list); | |
| 2044 /* Now handle REMOVE_LOCALE_TYPE and REMOVE_ALL. These are the | |
| 2045 add-meth types that affect locales other than this one. */ | |
| 2046 if (add_meth == SPEC_REMOVE_LOCALE_TYPE) | |
| 2047 specifier_remove_locale_type (specifier, type, Qnil, 0); | |
| 2048 else if (add_meth == SPEC_REMOVE_ALL) | |
| 2049 { | |
| 2050 specifier_remove_locale_type (specifier, LOCALE_BUFFER, Qnil, 0); | |
| 2051 specifier_remove_locale_type (specifier, LOCALE_WINDOW, Qnil, 0); | |
| 2052 specifier_remove_locale_type (specifier, LOCALE_FRAME, Qnil, 0); | |
| 2053 specifier_remove_locale_type (specifier, LOCALE_DEVICE, Qnil, 0); | |
| 2054 specifier_remove_spec (specifier, Qglobal, LOCALE_GLOBAL, Qnil, 0); | |
| 2055 } | |
| 2056 | |
| 2057 orig_inst_list = specifier_get_inst_list (specifier, locale, type); | |
| 2058 if (!orig_inst_list) | |
| 2059 orig_inst_list = specifier_new_spec (specifier, locale, type); | |
| 2060 add_meth = handle_multiple_add_insts (orig_inst_list, list_to_build_up, | |
| 2061 add_meth); | |
| 2062 | |
| 2063 if (add_meth == SPEC_PREPEND) | |
| 2064 tem = nconc2 (list_to_build_up, *orig_inst_list); | |
| 2065 else if (add_meth == SPEC_APPEND) | |
| 2066 tem = nconc2 (*orig_inst_list, list_to_build_up); | |
| 2067 else | |
| 442 | 2068 { |
| 2500 | 2069 ABORT (); |
| 442 | 2070 tem = Qnil; |
| 2071 } | |
| 428 | 2072 |
| 2073 *orig_inst_list = tem; | |
| 2074 | |
| 2075 UNGCPRO; | |
| 2076 | |
| 2077 /* call the after-change method */ | |
| 2078 MAYBE_SPECMETH (sp, after_change, | |
| 2079 (bodily_specifier (specifier), locale)); | |
| 2080 } | |
| 2081 | |
| 2082 static void | |
| 2083 specifier_copy_spec (Lisp_Object specifier, Lisp_Object dest, | |
| 2084 Lisp_Object locale, enum spec_locale_type type, | |
| 2085 Lisp_Object tag_set, int exact_p, | |
| 2086 enum spec_add_meth add_meth) | |
| 2087 { | |
| 2088 Lisp_Object inst_list = | |
| 2089 specifier_get_external_inst_list (specifier, locale, type, tag_set, | |
| 2090 exact_p, 0, 0); | |
| 2091 specifier_add_spec (dest, locale, inst_list, add_meth); | |
| 2092 } | |
| 2093 | |
| 2094 static void | |
| 2095 specifier_copy_locale_type (Lisp_Object specifier, Lisp_Object dest, | |
| 2096 enum spec_locale_type type, | |
| 2097 Lisp_Object tag_set, int exact_p, | |
| 2098 enum spec_add_meth add_meth) | |
| 2099 { | |
| 2100 Lisp_Object *src_list = SPECIFIER_GET_SPEC_LIST (specifier, type); | |
| 2101 Lisp_Object rest; | |
| 2102 | |
| 2103 /* This algorithm is O(n^2) in running time. | |
| 2104 It's certainly possible to implement an O(n log n) algorithm, | |
| 2105 but I doubt there's any need to. */ | |
| 2106 | |
| 2107 LIST_LOOP (rest, *src_list) | |
| 2108 { | |
| 2109 Lisp_Object spec = XCAR (rest); | |
| 2110 /* There may be dead objects floating around */ | |
| 2111 /* remember, dead windows can become alive again. */ | |
| 2112 if (WINDOWP (XCAR (spec)) || !object_dead_p (XCAR (spec))) | |
| 2113 specifier_add_spec | |
| 2114 (dest, XCAR (spec), | |
| 2115 specifier_process_inst_list (XCDR (spec), tag_set, exact_p, 0, 0), | |
| 2116 add_meth); | |
| 2117 } | |
| 2118 } | |
| 2119 | |
| 2120 /* map MAPFUN over the locales in SPECIFIER that are given in LOCALE. | |
| 2121 CLOSURE is passed unchanged to MAPFUN. LOCALE can be one of | |
| 2122 | |
| 3659 | 2123 -- nil (same as `all') |
| 2124 -- a single locale, locale type, or `all' | |
| 2125 -- a list of locales, locale types, and/or `all' | |
| 2953 | 2126 |
| 2127 MAPFUN is called for each locale and locale type given; for `all', | |
| 2128 it is called for the locale `global' and for the four possible | |
| 428 | 2129 locale types. In each invocation, either LOCALE will be a locale |
| 2130 and LOCALE_TYPE will be the locale type of this locale, | |
| 2131 or LOCALE will be nil and LOCALE_TYPE will be a locale type. | |
| 2132 If MAPFUN ever returns non-zero, the mapping is halted and the | |
| 2133 value returned is returned from map_specifier(). Otherwise, the | |
| 2134 mapping proceeds to the end and map_specifier() returns 0. | |
| 3659 | 2135 */ |
| 428 | 2136 |
| 2137 static int | |
| 2138 map_specifier (Lisp_Object specifier, Lisp_Object locale, | |
| 2139 int (*mapfun) (Lisp_Object specifier, | |
| 2140 Lisp_Object locale, | |
| 2141 enum spec_locale_type locale_type, | |
| 2142 Lisp_Object tag_set, | |
| 2143 int exact_p, | |
| 2144 void *closure), | |
| 2145 Lisp_Object tag_set, Lisp_Object exact_p, | |
| 2146 void *closure) | |
| 2147 { | |
| 2148 int retval = 0; | |
| 2149 Lisp_Object rest; | |
| 2150 struct gcpro gcpro1, gcpro2; | |
| 2151 | |
| 2152 GCPRO2 (tag_set, locale); | |
| 2153 locale = decode_locale_list (locale); | |
| 2154 tag_set = decode_specifier_tag_set (tag_set); | |
| 2155 tag_set = canonicalize_tag_set (tag_set); | |
| 2156 | |
| 2157 LIST_LOOP (rest, locale) | |
| 2158 { | |
| 2159 Lisp_Object theloc = XCAR (rest); | |
| 2160 if (!NILP (Fvalid_specifier_locale_p (theloc))) | |
| 2161 { | |
| 2162 retval = (*mapfun) (specifier, theloc, | |
| 2163 locale_type_from_locale (theloc), | |
| 2164 tag_set, !NILP (exact_p), closure); | |
| 2165 if (retval) | |
| 2166 break; | |
| 2167 } | |
| 2168 else if (!NILP (Fvalid_specifier_locale_type_p (theloc))) | |
| 2169 { | |
| 2170 retval = (*mapfun) (specifier, Qnil, | |
| 2171 decode_locale_type (theloc), tag_set, | |
| 2172 !NILP (exact_p), closure); | |
| 2173 if (retval) | |
| 2174 break; | |
| 2175 } | |
| 2176 else | |
| 2177 { | |
| 2178 assert (EQ (theloc, Qall)); | |
| 2179 retval = (*mapfun) (specifier, Qnil, LOCALE_BUFFER, tag_set, | |
| 2180 !NILP (exact_p), closure); | |
| 2181 if (retval) | |
| 2182 break; | |
| 2183 retval = (*mapfun) (specifier, Qnil, LOCALE_WINDOW, tag_set, | |
| 2184 !NILP (exact_p), closure); | |
| 2185 if (retval) | |
| 2186 break; | |
| 2187 retval = (*mapfun) (specifier, Qnil, LOCALE_FRAME, tag_set, | |
| 2188 !NILP (exact_p), closure); | |
| 2189 if (retval) | |
| 2190 break; | |
| 2191 retval = (*mapfun) (specifier, Qnil, LOCALE_DEVICE, tag_set, | |
| 2192 !NILP (exact_p), closure); | |
| 2193 if (retval) | |
| 2194 break; | |
| 2195 retval = (*mapfun) (specifier, Qglobal, LOCALE_GLOBAL, tag_set, | |
| 2196 !NILP (exact_p), closure); | |
| 2197 if (retval) | |
| 2198 break; | |
| 2199 } | |
| 2200 } | |
| 2201 | |
| 2202 UNGCPRO; | |
| 2203 return retval; | |
| 2204 } | |
| 2205 | |
| 2206 DEFUN ("add-spec-to-specifier", Fadd_spec_to_specifier, 2, 5, 0, /* | |
| 2207 Add a specification to SPECIFIER. | |
| 2208 The specification maps from LOCALE (which should be a window, buffer, | |
| 2953 | 2209 frame, device, or `global', and defaults to `global') to INSTANTIATOR, |
| 428 | 2210 whose allowed values depend on the type of the specifier. Optional |
| 2211 argument TAG-SET limits the instantiator to apply only to the specified | |
| 2212 tag set, which should be a list of tags all of which must match the | |
| 2213 device being instantiated over (tags are a device type, a device class, | |
| 2214 or tags defined with `define-specifier-tag'). Specifying a single | |
| 2215 symbol for TAG-SET is equivalent to specifying a one-element list | |
| 2216 containing that symbol. Optional argument HOW-TO-ADD specifies what to | |
| 2217 do if there are already specifications in the specifier. | |
| 2218 It should be one of | |
| 2219 | |
| 2953 | 2220 `prepend' Put at the beginning of the current list of |
| 428 | 2221 instantiators for LOCALE. |
| 2953 | 2222 `append' Add to the end of the current list of |
| 428 | 2223 instantiators for LOCALE. |
| 2953 | 2224 `remove-tag-set-prepend' (this is the default) |
| 428 | 2225 Remove any existing instantiators whose tag set is |
| 2226 the same as TAG-SET; then put the new instantiator | |
| 2227 at the beginning of the current list. ("Same tag | |
| 2228 set" means that they contain the same elements. | |
| 2229 The order may be different.) | |
| 2953 | 2230 `remove-tag-set-append' |
| 428 | 2231 Remove any existing instantiators whose tag set is |
| 2232 the same as TAG-SET; then put the new instantiator | |
| 2233 at the end of the current list. | |
| 2953 | 2234 `remove-locale' Remove all previous instantiators for this locale |
| 428 | 2235 before adding the new spec. |
| 2953 | 2236 `remove-locale-type' Remove all specifications for all locales of the |
| 428 | 2237 same type as LOCALE (this includes LOCALE itself) |
| 2238 before adding the new spec. | |
| 2953 | 2239 `remove-all' Remove all specifications from the specifier |
| 428 | 2240 before adding the new spec. |
| 2241 | |
| 2242 You can retrieve the specifications for a particular locale or locale type | |
| 2243 with the function `specifier-spec-list' or `specifier-specs'. | |
| 2244 */ | |
| 2245 (specifier, instantiator, locale, tag_set, how_to_add)) | |
| 2246 { | |
| 2247 enum spec_add_meth add_meth; | |
| 2248 Lisp_Object inst_list; | |
| 2249 struct gcpro gcpro1; | |
| 2250 | |
| 2251 CHECK_SPECIFIER (specifier); | |
| 2252 check_modifiable_specifier (specifier); | |
| 2253 | |
| 2254 locale = decode_locale (locale); | |
| 2255 check_valid_instantiator (instantiator, | |
| 2256 decode_specifier_type | |
| 2257 (Fspecifier_type (specifier), ERROR_ME), | |
| 2258 ERROR_ME); | |
| 2259 /* tag_set might be newly-created material, but it's part of inst_list | |
| 2260 so is properly GC-protected. */ | |
| 2261 tag_set = decode_specifier_tag_set (tag_set); | |
| 2262 add_meth = decode_how_to_add_specification (how_to_add); | |
| 2263 | |
| 2264 inst_list = list1 (Fcons (tag_set, instantiator)); | |
| 2265 GCPRO1 (inst_list); | |
| 2266 specifier_add_spec (specifier, locale, inst_list, add_meth); | |
| 2267 recompute_cached_specifier_everywhere (specifier); | |
| 2268 RETURN_UNGCPRO (Qnil); | |
| 2269 } | |
| 2270 | |
| 2271 DEFUN ("add-spec-list-to-specifier", Fadd_spec_list_to_specifier, 2, 3, 0, /* | |
| 444 | 2272 Add SPEC-LIST (a list of specifications) to SPECIFIER. |
| 2273 The format of SPEC-LIST is | |
| 428 | 2274 |
| 2275 ((LOCALE (TAG-SET . INSTANTIATOR) ...) ...) | |
| 2276 | |
| 2277 where | |
| 2953 | 2278 LOCALE := a window, a buffer, a frame, a device, or `global' |
| 428 | 2279 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
|
2280 is a symbol |
| 428 | 2281 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
|
2282 (see `valid-console-type-p'), or a tag defined with |
|
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
2283 `define-specifier-tag' |
| 428 | 2284 INSTANTIATOR := format determined by the type of specifier |
| 2285 | |
| 2286 The pair (TAG-SET . INSTANTIATOR) is called an `inst-pair'. | |
| 2287 A list of inst-pairs is called an `inst-list'. | |
| 2288 The pair (LOCALE . INST-LIST) is called a `specification' or `spec'. | |
| 2289 A spec-list, then, can be viewed as a list of specifications. | |
| 2290 | |
| 2291 HOW-TO-ADD specifies how to combine the new specifications with | |
| 2292 the existing ones, and has the same semantics as for | |
| 2293 `add-spec-to-specifier'. | |
| 2294 | |
| 2295 In many circumstances, the higher-level function `set-specifier' is | |
| 2296 more convenient and should be used instead. | |
| 2297 */ | |
| 2298 (specifier, spec_list, how_to_add)) | |
| 2299 { | |
| 2300 enum spec_add_meth add_meth; | |
| 2301 Lisp_Object rest; | |
| 2302 | |
| 2303 CHECK_SPECIFIER (specifier); | |
| 2304 check_modifiable_specifier (specifier); | |
| 2305 | |
| 2306 check_valid_spec_list (spec_list, | |
| 2307 decode_specifier_type | |
| 2308 (Fspecifier_type (specifier), ERROR_ME), | |
| 2309 ERROR_ME); | |
| 2310 add_meth = decode_how_to_add_specification (how_to_add); | |
| 2311 | |
| 2312 LIST_LOOP (rest, spec_list) | |
| 2313 { | |
| 2314 /* Placating the GCC god. */ | |
| 2315 Lisp_Object specification = XCAR (rest); | |
| 2316 Lisp_Object locale = XCAR (specification); | |
| 2317 Lisp_Object inst_list = XCDR (specification); | |
| 2318 | |
| 2319 specifier_add_spec (specifier, locale, inst_list, add_meth); | |
| 2320 } | |
| 2321 recompute_cached_specifier_everywhere (specifier); | |
| 2322 return Qnil; | |
| 2323 } | |
| 2324 | |
| 2325 void | |
| 2326 add_spec_to_ghost_specifier (Lisp_Object specifier, Lisp_Object instantiator, | |
| 2327 Lisp_Object locale, Lisp_Object tag_set, | |
| 2328 Lisp_Object how_to_add) | |
| 2329 { | |
| 2330 int depth = unlock_ghost_specifiers_protected (); | |
| 2331 Fadd_spec_to_specifier (XSPECIFIER(specifier)->fallback, | |
| 2332 instantiator, locale, tag_set, how_to_add); | |
| 771 | 2333 unbind_to (depth); |
| 428 | 2334 } |
| 2335 | |
| 2336 struct specifier_spec_list_closure | |
| 2337 { | |
| 2338 Lisp_Object head, tail; | |
| 2339 }; | |
| 2340 | |
| 2341 static int | |
| 2342 specifier_spec_list_mapfun (Lisp_Object specifier, | |
| 2343 Lisp_Object locale, | |
| 2344 enum spec_locale_type locale_type, | |
| 2345 Lisp_Object tag_set, | |
| 2346 int exact_p, | |
| 2347 void *closure) | |
| 2348 { | |
| 2349 struct specifier_spec_list_closure *cl = | |
| 2350 (struct specifier_spec_list_closure *) closure; | |
| 2351 Lisp_Object partial; | |
| 2352 | |
| 2353 if (NILP (locale)) | |
| 2354 partial = specifier_get_external_spec_list (specifier, | |
| 2355 locale_type, | |
| 2356 tag_set, exact_p); | |
| 2357 else | |
| 2358 { | |
| 2359 partial = specifier_get_external_inst_list (specifier, locale, | |
| 2360 locale_type, tag_set, | |
| 2361 exact_p, 0, 1); | |
| 2362 if (!NILP (partial)) | |
| 2363 partial = list1 (Fcons (locale, partial)); | |
| 2364 } | |
| 2365 if (NILP (partial)) | |
| 2366 return 0; | |
| 2367 | |
| 2368 /* tack on the new list */ | |
| 2369 if (NILP (cl->tail)) | |
| 2370 cl->head = cl->tail = partial; | |
| 2371 else | |
| 2372 XCDR (cl->tail) = partial; | |
| 2373 /* find the new tail */ | |
| 2374 while (CONSP (XCDR (cl->tail))) | |
| 2375 cl->tail = XCDR (cl->tail); | |
| 2376 return 0; | |
| 2377 } | |
| 2378 | |
| 2379 /* For the given SPECIFIER create and return a list of all specs | |
| 2380 contained within it, subject to LOCALE. If LOCALE is a locale, only | |
| 2381 specs in that locale will be returned. If LOCALE is a locale type, | |
| 2382 all specs in all locales of that type will be returned. If LOCALE is | |
| 2383 nil, all specs will be returned. This always copies lists and never | |
| 2384 returns the actual lists, because we do not want someone manipulating | |
| 2385 the actual objects. This may cause a slight loss of potential | |
| 2386 functionality but if we were to allow it then a user could manage to | |
| 2387 violate our assertion that the specs contained in the actual | |
| 2388 specifier lists are all valid. */ | |
| 2389 | |
| 2390 DEFUN ("specifier-spec-list", Fspecifier_spec_list, 1, 4, 0, /* | |
| 2391 Return the spec-list of specifications for SPECIFIER in LOCALE. | |
| 2392 | |
| 2393 If LOCALE is a particular locale (a buffer, window, frame, device, | |
| 2953 | 2394 or `global'), a spec-list consisting of the specification for that |
| 428 | 2395 locale will be returned. |
| 2396 | |
| 2953 | 2397 If LOCALE is a locale type (i.e. `buffer', `window', `frame', or `device'), |
| 428 | 2398 a spec-list of the specifications for all locales of that type will be |
| 2399 returned. | |
| 2400 | |
| 2953 | 2401 If LOCALE is nil or `all', a spec-list of all specifications in SPECIFIER |
| 428 | 2402 will be returned. |
| 2403 | |
| 2953 | 2404 LOCALE can also be a list of locales, locale types, and/or `all'; the |
| 428 | 2405 result is as if `specifier-spec-list' were called on each element of the |
| 2406 list and the results concatenated together. | |
| 2407 | |
| 2408 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2409 subset of (or possibly equal to) the instantiator's tag set are returned. | |
| 2410 \(The default value of nil is a subset of all tag sets, so in this case | |
| 2411 no instantiators will be screened out.) If EXACT-P is non-nil, however, | |
| 2412 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2413 to be returned. | |
| 2414 */ | |
| 3659 | 2415 (specifier, locale, tag_set, exact_p)) |
| 428 | 2416 { |
| 2417 struct specifier_spec_list_closure cl; | |
| 2418 struct gcpro gcpro1, gcpro2; | |
| 2419 | |
| 2420 CHECK_SPECIFIER (specifier); | |
| 2421 cl.head = cl.tail = Qnil; | |
| 2422 GCPRO2 (cl.head, cl.tail); | |
| 2423 map_specifier (specifier, locale, specifier_spec_list_mapfun, | |
| 2424 tag_set, exact_p, &cl); | |
| 2425 UNGCPRO; | |
| 2426 return cl.head; | |
| 2427 } | |
| 2428 | |
| 2429 | |
| 2430 DEFUN ("specifier-specs", Fspecifier_specs, 1, 4, 0, /* | |
| 2431 Return the specification(s) for SPECIFIER in LOCALE. | |
| 2432 | |
| 2433 If LOCALE is a single locale or is a list of one element containing a | |
| 2434 single locale, then a "short form" of the instantiators for that locale | |
| 2435 will be returned. Otherwise, this function is identical to | |
| 2436 `specifier-spec-list'. | |
| 2437 | |
| 2438 The "short form" is designed for readability and not for ease of use | |
| 2439 in Lisp programs, and is as follows: | |
| 2440 | |
| 2441 1. If there is only one instantiator, then an inst-pair (i.e. cons of | |
| 2442 tag and instantiator) will be returned; otherwise a list of | |
| 2443 inst-pairs will be returned. | |
| 2953 | 2444 2. For each inst-pair returned, if the instantiator's tag is `any', |
| 428 | 2445 the tag will be removed and the instantiator itself will be returned |
| 2446 instead of the inst-pair. | |
| 2447 3. If there is only one instantiator, its value is nil, and its tag is | |
| 2953 | 2448 `any', a one-element list containing nil will be returned rather |
| 428 | 2449 than just nil, to distinguish this case from there being no |
| 2450 instantiators at all. | |
| 2451 */ | |
| 2452 (specifier, locale, tag_set, exact_p)) | |
| 2453 { | |
| 2454 if (!NILP (Fvalid_specifier_locale_p (locale)) || | |
| 2455 (CONSP (locale) && !NILP (Fvalid_specifier_locale_p (XCAR (locale))) && | |
| 2456 NILP (XCDR (locale)))) | |
| 2457 { | |
| 2458 struct gcpro gcpro1; | |
| 2459 | |
| 2460 CHECK_SPECIFIER (specifier); | |
| 2461 if (CONSP (locale)) | |
| 2462 locale = XCAR (locale); | |
| 2463 GCPRO1 (tag_set); | |
| 2464 tag_set = decode_specifier_tag_set (tag_set); | |
| 2465 tag_set = canonicalize_tag_set (tag_set); | |
| 2466 RETURN_UNGCPRO | |
| 2467 (specifier_get_external_inst_list (specifier, locale, | |
| 2468 locale_type_from_locale (locale), | |
| 2469 tag_set, !NILP (exact_p), 1, 1)); | |
| 2470 } | |
| 2471 else | |
| 2472 return Fspecifier_spec_list (specifier, locale, tag_set, exact_p); | |
| 2473 } | |
| 2474 | |
| 2475 static int | |
| 2476 remove_specifier_mapfun (Lisp_Object specifier, | |
| 2477 Lisp_Object locale, | |
| 2478 enum spec_locale_type locale_type, | |
| 2479 Lisp_Object tag_set, | |
| 2480 int exact_p, | |
| 2286 | 2481 void *UNUSED (closure)) |
| 428 | 2482 { |
| 2483 if (NILP (locale)) | |
| 2484 specifier_remove_locale_type (specifier, locale_type, tag_set, exact_p); | |
| 2485 else | |
| 2486 specifier_remove_spec (specifier, locale, locale_type, tag_set, exact_p); | |
| 2487 return 0; | |
| 2488 } | |
| 2489 | |
| 2490 DEFUN ("remove-specifier", Fremove_specifier, 1, 4, 0, /* | |
| 2491 Remove specification(s) for SPECIFIER. | |
| 2492 | |
| 2493 If LOCALE is a particular locale (a window, buffer, frame, device, | |
| 2953 | 2494 or `global'), the specification for that locale will be removed. |
| 2495 | |
| 2496 If instead, LOCALE is a locale type (i.e. `window', `buffer', `frame', | |
| 2497 or `device'), the specifications for all locales of that type will be | |
| 428 | 2498 removed. |
| 2499 | |
| 2953 | 2500 If LOCALE is nil or `all', all specifications will be removed. |
| 2501 | |
| 2502 LOCALE can also be a list of locales, locale types, and/or `all'; this | |
| 428 | 2503 is equivalent to calling `remove-specifier' for each of the elements |
| 2504 in the list. | |
| 2505 | |
| 2506 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2507 subset of (or possibly equal to) the instantiator's tag set are removed. | |
| 2508 The default value of nil is a subset of all tag sets, so in this case | |
| 2509 no instantiators will be screened out. If EXACT-P is non-nil, however, | |
| 2510 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2511 to be removed. | |
| 2512 */ | |
| 2513 (specifier, locale, tag_set, exact_p)) | |
| 2514 { | |
| 2515 CHECK_SPECIFIER (specifier); | |
| 2516 check_modifiable_specifier (specifier); | |
| 2517 | |
| 2518 map_specifier (specifier, locale, remove_specifier_mapfun, | |
| 2519 tag_set, exact_p, 0); | |
| 2520 recompute_cached_specifier_everywhere (specifier); | |
| 2521 return Qnil; | |
| 2522 } | |
| 2523 | |
| 2524 void | |
| 2525 remove_ghost_specifier (Lisp_Object specifier, Lisp_Object locale, | |
| 2526 Lisp_Object tag_set, Lisp_Object exact_p) | |
| 2527 { | |
| 2528 int depth = unlock_ghost_specifiers_protected (); | |
| 2529 Fremove_specifier (XSPECIFIER(specifier)->fallback, | |
| 2530 locale, tag_set, exact_p); | |
| 771 | 2531 unbind_to (depth); |
| 428 | 2532 } |
| 2533 | |
| 2534 struct copy_specifier_closure | |
| 2535 { | |
| 2536 Lisp_Object dest; | |
| 2537 enum spec_add_meth add_meth; | |
| 2538 int add_meth_is_nil; | |
| 2539 }; | |
| 2540 | |
| 2541 static int | |
| 2542 copy_specifier_mapfun (Lisp_Object specifier, | |
| 2543 Lisp_Object locale, | |
| 2544 enum spec_locale_type locale_type, | |
| 2545 Lisp_Object tag_set, | |
| 2546 int exact_p, | |
| 2547 void *closure) | |
| 2548 { | |
| 2549 struct copy_specifier_closure *cl = | |
| 2550 (struct copy_specifier_closure *) closure; | |
| 2551 | |
| 2552 if (NILP (locale)) | |
| 2553 specifier_copy_locale_type (specifier, cl->dest, locale_type, | |
| 2554 tag_set, exact_p, | |
| 2555 cl->add_meth_is_nil ? | |
| 2556 SPEC_REMOVE_LOCALE_TYPE : | |
| 2557 cl->add_meth); | |
| 2558 else | |
| 2559 specifier_copy_spec (specifier, cl->dest, locale, locale_type, | |
| 2560 tag_set, exact_p, | |
| 2561 cl->add_meth_is_nil ? SPEC_REMOVE_LOCALE : | |
| 2562 cl->add_meth); | |
| 2563 return 0; | |
| 2564 } | |
| 2565 | |
| 2566 DEFUN ("copy-specifier", Fcopy_specifier, 1, 6, 0, /* | |
| 2567 Copy SPECIFIER to DEST, or create a new one if DEST is nil. | |
| 2568 | |
| 2569 If DEST is nil or omitted, a new specifier will be created and the | |
| 2570 specifications copied into it. Otherwise, the specifications will be | |
| 2571 copied into the existing specifier in DEST. | |
| 2572 | |
| 2953 | 2573 If LOCALE is nil or `all', all specifications will be copied. If LOCALE |
| 428 | 2574 is a particular locale, the specification for that particular locale will |
| 2575 be copied. If LOCALE is a locale type, the specifications for all locales | |
| 2576 of that type will be copied. LOCALE can also be a list of locales, | |
| 2953 | 2577 locale types, and/or `all'; this is equivalent to calling `copy-specifier' |
| 428 | 2578 for each of the elements of the list. See `specifier-spec-list' for more |
| 2579 information about LOCALE. | |
| 2580 | |
| 2581 Only instantiators where TAG-SET (a list of zero or more tags) is a | |
| 2582 subset of (or possibly equal to) the instantiator's tag set are copied. | |
| 2583 The default value of nil is a subset of all tag sets, so in this case | |
| 2584 no instantiators will be screened out. If EXACT-P is non-nil, however, | |
| 2585 TAG-SET must be equal to an instantiator's tag set for the instantiator | |
| 2586 to be copied. | |
| 2587 | |
| 2588 Optional argument HOW-TO-ADD specifies what to do with existing | |
| 2589 specifications in DEST. If nil, then whichever locales or locale types | |
| 2590 are copied will first be completely erased in DEST. Otherwise, it is | |
| 2591 the same as in `add-spec-to-specifier'. | |
| 2592 */ | |
| 2593 (specifier, dest, locale, tag_set, exact_p, how_to_add)) | |
| 2594 { | |
| 2595 struct gcpro gcpro1; | |
| 2596 struct copy_specifier_closure cl; | |
| 2597 | |
| 2598 CHECK_SPECIFIER (specifier); | |
| 2599 if (NILP (how_to_add)) | |
| 2600 cl.add_meth_is_nil = 1; | |
| 2601 else | |
| 2602 cl.add_meth_is_nil = 0; | |
| 2603 cl.add_meth = decode_how_to_add_specification (how_to_add); | |
| 2604 if (NILP (dest)) | |
| 2605 { | |
| 2606 /* #### What about copying the extra data? */ | |
| 2607 dest = make_specifier (XSPECIFIER (specifier)->methods); | |
| 2608 } | |
| 2609 else | |
| 2610 { | |
| 2611 CHECK_SPECIFIER (dest); | |
| 2612 check_modifiable_specifier (dest); | |
| 2613 if (XSPECIFIER (dest)->methods != XSPECIFIER (specifier)->methods) | |
| 3659 | 2614 invalid_argument ("Specifiers not of same type", Qunbound); |
| 428 | 2615 } |
| 2616 | |
| 2617 cl.dest = dest; | |
| 2618 GCPRO1 (dest); | |
| 2619 map_specifier (specifier, locale, copy_specifier_mapfun, | |
| 2620 tag_set, exact_p, &cl); | |
| 2621 UNGCPRO; | |
| 2622 recompute_cached_specifier_everywhere (dest); | |
| 2623 return dest; | |
| 2624 } | |
| 2625 | |
| 2626 | |
| 2627 /************************************************************************/ | |
| 2953 | 2628 /* Instantiation */ |
| 428 | 2629 /************************************************************************/ |
| 2630 | |
| 2631 static Lisp_Object | |
| 2632 call_validate_matchspec_method (Lisp_Object boxed_method, | |
| 2633 Lisp_Object matchspec) | |
| 2634 { | |
| 2635 ((void (*)(Lisp_Object)) get_opaque_ptr (boxed_method)) (matchspec); | |
| 2636 return Qt; | |
| 2637 } | |
| 2638 | |
| 2639 static Lisp_Object | |
| 2640 check_valid_specifier_matchspec (Lisp_Object matchspec, | |
| 2641 struct specifier_methods *meths, | |
| 578 | 2642 Error_Behavior errb) |
| 428 | 2643 { |
| 2644 if (meths->validate_matchspec_method) | |
| 2645 { | |
| 2646 Lisp_Object retval; | |
| 2647 | |
| 2648 if (ERRB_EQ (errb, ERROR_ME)) | |
| 2649 { | |
| 2650 (meths->validate_matchspec_method) (matchspec); | |
| 2651 retval = Qt; | |
| 2652 } | |
| 2653 else | |
| 2654 { | |
| 2655 Lisp_Object opaque = | |
| 2656 make_opaque_ptr ((void *) meths->validate_matchspec_method); | |
| 2657 struct gcpro gcpro1; | |
| 2658 | |
| 2659 GCPRO1 (opaque); | |
| 2660 retval = call_with_suspended_errors | |
| 2661 ((lisp_fn_t) call_validate_matchspec_method, | |
| 2662 Qnil, Qspecifier, errb, 2, opaque, matchspec); | |
| 2663 | |
| 2664 free_opaque_ptr (opaque); | |
| 2665 UNGCPRO; | |
| 2666 } | |
| 2667 | |
| 2668 return retval; | |
| 2669 } | |
| 2670 else | |
| 2671 { | |
| 563 | 2672 maybe_sferror |
| 428 | 2673 ("Matchspecs not allowed for this specifier type", |
| 2674 intern (meths->name), Qspecifier, errb); | |
| 2675 return Qnil; | |
| 2676 } | |
| 2677 } | |
| 2678 | |
| 442 | 2679 DEFUN ("check-valid-specifier-matchspec", Fcheck_valid_specifier_matchspec, 2, |
| 2680 2, 0, /* | |
| 428 | 2681 Signal an error if MATCHSPEC is invalid for SPECIFIER-TYPE. |
| 2682 See `specifier-matching-instance' for a description of matchspecs. | |
| 2683 */ | |
| 2684 (matchspec, specifier_type)) | |
| 2685 { | |
| 2686 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 2687 ERROR_ME); | |
| 2688 | |
| 2689 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME); | |
| 2690 } | |
| 2691 | |
| 2692 DEFUN ("valid-specifier-matchspec-p", Fvalid_specifier_matchspec_p, 2, 2, 0, /* | |
| 2693 Return non-nil if MATCHSPEC is valid for SPECIFIER-TYPE. | |
| 2694 See `specifier-matching-instance' for a description of matchspecs. | |
| 2695 */ | |
| 2696 (matchspec, specifier_type)) | |
| 2697 { | |
| 2698 struct specifier_methods *meths = decode_specifier_type (specifier_type, | |
| 2699 ERROR_ME); | |
| 2700 | |
| 2701 return check_valid_specifier_matchspec (matchspec, meths, ERROR_ME_NOT); | |
| 2702 } | |
| 2703 | |
| 2704 /* This function is purposely not callable from Lisp. If a Lisp | |
| 2705 caller wants to set a fallback, they should just set the | |
| 2706 global value. */ | |
| 2707 | |
| 2708 void | |
| 2709 set_specifier_fallback (Lisp_Object specifier, Lisp_Object fallback) | |
| 2710 { | |
| 440 | 2711 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2712 assert (SPECIFIERP (fallback) || |
| 2713 !NILP (Fvalid_inst_list_p (fallback, Fspecifier_type (specifier)))); | |
| 2714 if (SPECIFIERP (fallback)) | |
| 2715 assert (EQ (Fspecifier_type (specifier), Fspecifier_type (fallback))); | |
| 2716 if (BODILY_SPECIFIER_P (sp)) | |
| 2717 GHOST_SPECIFIER(sp)->fallback = fallback; | |
| 2718 else | |
| 2719 sp->fallback = fallback; | |
| 2720 /* call the after-change method */ | |
| 2721 MAYBE_SPECMETH (sp, after_change, | |
| 2722 (bodily_specifier (specifier), Qfallback)); | |
| 2723 recompute_cached_specifier_everywhere (specifier); | |
| 2724 } | |
| 2725 | |
| 2726 DEFUN ("specifier-fallback", Fspecifier_fallback, 1, 1, 0, /* | |
| 2727 Return the fallback value for SPECIFIER. | |
| 2728 Fallback values are provided by the C code for certain built-in | |
| 2953 | 2729 specifiers to make sure that instantiation won't fail even if all |
| 428 | 2730 specs are removed from the specifier, or to implement simple |
| 2731 inheritance behavior (e.g. this method is used to ensure that | |
| 2953 | 2732 faces other than `default' inherit their attributes from `default'). |
| 428 | 2733 By design, you cannot change the fallback value, and specifiers |
| 2734 created with `make-specifier' will never have a fallback (although | |
| 2735 a similar, Lisp-accessible capability may be provided in the future | |
| 2736 to allow for inheritance). | |
| 2737 | |
| 2953 | 2738 The fallback value will be an inst-list that is instantiated like |
| 428 | 2739 any other inst-list, a specifier of the same type as SPECIFIER |
| 2740 \(results in inheritance), or nil for no fallback. | |
| 2741 | |
| 2953 | 2742 When you instantiate a specifier, you can explicitly request that the |
| 428 | 2743 fallback not be consulted. (The C code does this, for example, when |
| 2744 merging faces.) See `specifier-instance'. | |
| 2745 */ | |
| 2746 (specifier)) | |
| 2747 { | |
| 2748 CHECK_SPECIFIER (specifier); | |
| 2749 return Fcopy_tree (XSPECIFIER (specifier)->fallback, Qt); | |
| 2750 } | |
| 2751 | |
| 2752 static Lisp_Object | |
| 2753 specifier_instance_from_inst_list (Lisp_Object specifier, | |
| 2754 Lisp_Object matchspec, | |
| 2755 Lisp_Object domain, | |
| 2756 Lisp_Object inst_list, | |
| 578 | 2757 Error_Behavior errb, int no_quit, |
| 2953 | 2758 Lisp_Object depth, |
|
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2759 Lisp_Object *instantiator, |
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2760 int no_fallback) |
| 428 | 2761 { |
| 2762 /* This function can GC */ | |
| 440 | 2763 Lisp_Specifier *sp; |
| 3659 | 2764 Lisp_Object device, charset = Qnil, rest; |
| 2765 int count = specpdl_depth (), respected_charsets = 0; | |
| 428 | 2766 struct gcpro gcpro1, gcpro2; |
|
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|
2767 enum font_specifier_matchspec_stages stage = STAGE_INITIAL; |
| 428 | 2768 |
| 2769 GCPRO2 (specifier, inst_list); | |
| 2770 | |
| 2771 sp = XSPECIFIER (specifier); | |
| 442 | 2772 device = DOMAIN_DEVICE (domain); |
| 428 | 2773 |
| 2774 if (no_quit) | |
| 3659 | 2775 /* The instantiate method is allowed to call eval. Since it |
| 2776 is quite common for this function to get called from somewhere in | |
| 2777 redisplay we need to make sure that quits are ignored. Otherwise | |
| 2778 Fsignal will abort. */ | |
| 428 | 2779 specbind (Qinhibit_quit, Qt); |
| 2780 | |
| 3659 | 2781 #ifdef MULE |
| 4828 | 2782 /* #### FIXME Does this font-specific stuff need to be here and not in |
| 2783 the font-specifier-specific code? --ben */ | |
|
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|
2784 if (CONSP (matchspec) && (CHARSETP (Ffind_charset (XCAR (matchspec))))) |
| 3659 | 2785 { |
|
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|
2786 charset = Ffind_charset (XCAR (matchspec)); |
| 3659 | 2787 |
| 2788 #ifdef DEBUG_XEMACS | |
| 2789 /* This is mostly to have somewhere to set debug breakpoints. */ | |
| 4853 | 2790 if (!EQ (charset, Vcharset_ascii)) |
| 3659 | 2791 { |
| 4853 | 2792 (void) 0; |
| 3659 | 2793 } |
| 2794 #endif /* DEBUG_XEMACS */ | |
| 2795 | |
|
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|
2796 if (!NILP (XCDR (matchspec))) |
| 3659 | 2797 { |
| 2798 | |
|
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|
2799 #define FROB(new_stage, enumstage) \ |
|
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2800 if (EQ (Q##new_stage, XCDR (matchspec))) \ |
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2801 { \ |
|
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|
2802 stage = enumstage; \ |
| 3659 | 2803 } |
| 2804 | |
|
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2805 FROB (initial, STAGE_INITIAL) |
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2806 else FROB (final, STAGE_FINAL) |
| 3659 | 2807 else assert(0); |
| 2808 #undef FROB | |
| 2809 | |
| 2810 } | |
| 2811 } | |
| 2812 #endif /* MULE */ | |
| 2813 | |
| 2814 LIST_LOOP(rest, inst_list) | |
| 2815 { | |
| 2816 Lisp_Object tagged_inst = XCAR (rest); | |
| 2817 Lisp_Object tag_set = XCAR (tagged_inst); | |
| 2818 Lisp_Object val, the_instantiator; | |
| 2819 | |
| 2820 if (!device_matches_specifier_tag_set_p (device, tag_set)) | |
| 2821 { | |
|
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2822 continue; |
| 3659 | 2823 } |
| 2824 | |
| 2825 val = XCDR (tagged_inst); | |
| 2826 the_instantiator = val; | |
| 2827 | |
| 2828 if (!NILP(charset) && | |
| 2829 !(charset_matches_specifier_tag_set_p (charset, tag_set, stage))) | |
| 2830 { | |
| 2831 ++respected_charsets; | |
| 2832 continue; | |
| 2833 } | |
| 2834 | |
| 2835 if (HAS_SPECMETH_P (sp, instantiate)) | |
| 2836 val = call_with_suspended_errors | |
| 2837 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate), | |
| 2838 Qunbound, Qspecifier, errb, 5, specifier, | |
|
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2839 matchspec, domain, val, depth, no_fallback); |
| 3659 | 2840 |
| 2841 if (!UNBOUNDP (val)) | |
| 2842 { | |
| 2843 unbind_to (count); | |
| 2844 UNGCPRO; | |
| 2845 if (instantiator) | |
| 2846 *instantiator = the_instantiator; | |
| 2847 return val; | |
| 2848 } | |
| 2849 } | |
| 2850 | |
| 2851 /* We've checked all the tag sets, and checking the charset part of the | |
| 2852 specifier never returned 0 (preventing the attempted instantiation), so | |
| 2853 there's no need to loop for the second time to avoid checking the | |
| 2854 charsets. */ | |
| 2855 if (!respected_charsets) | |
| 2856 { | |
| 2857 unbind_to (count); | |
| 2858 UNGCPRO; | |
| 2859 return Qunbound; | |
| 2860 } | |
| 2861 | |
| 2862 /* Right, didn't instantiate a specifier last time, perhaps because we | |
| 2863 paid attention to the charset-specific aspects of the specifier. Try | |
| 2864 again without checking the charset information. | |
| 2865 | |
| 2866 We can't emulate the approach for devices, defaulting to matching all | |
| 2867 character sets for a given specifier, because $random font instantiator | |
| 2868 cannot usefully show all character sets, and indeed having it try is a | |
| 2869 failure on our part. */ | |
| 428 | 2870 LIST_LOOP (rest, inst_list) |
| 2871 { | |
| 2872 Lisp_Object tagged_inst = XCAR (rest); | |
| 2873 Lisp_Object tag_set = XCAR (tagged_inst); | |
| 3659 | 2874 Lisp_Object val, the_instantiator; |
| 2875 | |
| 2876 if (!device_matches_specifier_tag_set_p (device, tag_set)) | |
| 428 | 2877 { |
|
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2878 continue; |
| 3659 | 2879 } |
| 2880 | |
| 2881 val = XCDR (tagged_inst); | |
| 2882 the_instantiator = val; | |
| 2883 | |
| 2884 if (HAS_SPECMETH_P (sp, instantiate)) | |
| 2885 val = call_with_suspended_errors | |
| 2886 ((lisp_fn_t) RAW_SPECMETH (sp, instantiate), | |
| 2887 Qunbound, Qspecifier, errb, 5, specifier, | |
|
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2888 matchspec, domain, val, depth, no_fallback); |
| 3659 | 2889 |
| 2890 if (!UNBOUNDP (val)) | |
| 2891 { | |
| 2892 unbind_to (count); | |
| 2893 UNGCPRO; | |
| 2894 if (instantiator) | |
| 2895 *instantiator = the_instantiator; | |
| 2896 return val; | |
| 428 | 2897 } |
| 2898 } | |
| 2899 | |
| 771 | 2900 unbind_to (count); |
| 428 | 2901 UNGCPRO; |
| 2902 return Qunbound; | |
| 2903 } | |
| 2904 | |
| 2905 /* Given a SPECIFIER and a DOMAIN, return a specific instance for that | |
| 2906 specifier. Try to find one by checking the specifier types from most | |
| 4437 | 2907 specific (window) to most general (global). If we find an instance, |
| 428 | 2908 return it. Otherwise return Qunbound. */ |
| 2909 | |
| 2910 #define CHECK_INSTANCE_ENTRY(key, matchspec, type) do { \ | |
| 3659 | 2911 Lisp_Object *CIE_inst_list = \ |
| 2912 specifier_get_inst_list (specifier, key, type); \ | |
| 2913 if (CIE_inst_list) \ | |
| 2914 { \ | |
| 2915 Lisp_Object CIE_val = \ | |
| 2916 specifier_instance_from_inst_list (specifier, matchspec, \ | |
| 2917 domain, *CIE_inst_list, \ | |
| 2918 errb, no_quit, depth, \ | |
|
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2919 instantiator, no_fallback); \ |
| 3659 | 2920 if (!UNBOUNDP (CIE_val)) \ |
| 2921 return CIE_val; \ | |
| 2922 } \ | |
| 2923 } while (0) | |
| 428 | 2924 |
| 2925 /* We accept any window, frame or device domain and do our checking | |
| 2926 starting from as specific a locale type as we can determine from the | |
| 2927 domain we are passed and going on up through as many other locale types | |
| 2928 as we can determine. In practice, when called from redisplay the | |
| 2929 arg will usually be a window and occasionally a frame. If | |
| 2930 triggered by a user call, who knows what it will usually be. */ | |
| 2953 | 2931 |
| 2932 static Lisp_Object | |
| 2933 specifier_instance_1 (Lisp_Object specifier, Lisp_Object matchspec, | |
| 2934 Lisp_Object domain, Error_Behavior errb, int no_quit, | |
| 2935 int no_fallback, Lisp_Object depth, | |
| 2936 Lisp_Object *instantiator) | |
| 428 | 2937 { |
| 2938 Lisp_Object buffer = Qnil; | |
| 2939 Lisp_Object window = Qnil; | |
| 2940 Lisp_Object frame = Qnil; | |
| 2941 Lisp_Object device = Qnil; | |
| 444 | 2942 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 2943 |
| 2953 | 2944 if (instantiator) |
| 2945 *instantiator = Qunbound; | |
| 2946 | |
| 428 | 2947 /* Attempt to determine buffer, window, frame, and device from the |
| 2948 domain. */ | |
| 442 | 2949 /* #### get image instances out of domains! */ |
| 2950 if (IMAGE_INSTANCEP (domain)) | |
| 2951 window = DOMAIN_WINDOW (domain); | |
| 2952 else if (WINDOWP (domain)) | |
| 428 | 2953 window = domain; |
| 2954 else if (FRAMEP (domain)) | |
| 2955 frame = domain; | |
| 2956 else if (DEVICEP (domain)) | |
| 2957 device = domain; | |
| 2958 else | |
| 442 | 2959 /* dmoore writes: [dammit, this should just signal an error or something |
| 2960 shouldn't it?] | |
| 2961 | |
| 2962 No. Errors are handled in Lisp primitives implementation. | |
| 428 | 2963 Invalid domain is a design error here - kkm. */ |
| 2500 | 2964 ABORT (); |
| 428 | 2965 |
| 2966 if (NILP (buffer) && !NILP (window)) | |
| 444 | 2967 buffer = WINDOW_BUFFER (XWINDOW (window)); |
| 428 | 2968 if (NILP (frame) && !NILP (window)) |
| 2969 frame = XWINDOW (window)->frame; | |
| 2970 if (NILP (device)) | |
| 2971 /* frame had better exist; if device is undeterminable, something | |
| 2972 really went wrong. */ | |
| 444 | 2973 device = FRAME_DEVICE (XFRAME (frame)); |
| 428 | 2974 |
| 2975 /* device had better be determined by now; abort if not. */ | |
| 2286 | 2976 (void) DEVICE_CLASS (XDEVICE (device)); |
| 428 | 2977 |
| 2978 depth = make_int (1 + XINT (depth)); | |
| 2979 if (XINT (depth) > 20) | |
| 2980 { | |
| 563 | 2981 maybe_signal_error (Qstack_overflow, |
| 2982 "Apparent loop in specifier inheritance", | |
| 2983 Qunbound, Qspecifier, errb); | |
| 428 | 2984 /* The specification is fucked; at least try the fallback |
| 2985 (which better not be fucked, because it's not changeable | |
| 2986 from Lisp). */ | |
| 2987 depth = Qzero; | |
| 2988 goto do_fallback; | |
| 2989 } | |
| 2990 | |
| 434 | 2991 retry: |
| 428 | 2992 /* First see if we can generate one from the window specifiers. */ |
| 2993 if (!NILP (window)) | |
| 2994 CHECK_INSTANCE_ENTRY (window, matchspec, LOCALE_WINDOW); | |
| 2995 | |
| 2996 /* Next see if we can generate one from the buffer specifiers. */ | |
| 2997 if (!NILP (buffer)) | |
| 2998 CHECK_INSTANCE_ENTRY (buffer, matchspec, LOCALE_BUFFER); | |
| 2999 | |
| 3000 /* Next see if we can generate one from the frame specifiers. */ | |
| 3001 if (!NILP (frame)) | |
| 3002 CHECK_INSTANCE_ENTRY (frame, matchspec, LOCALE_FRAME); | |
| 3003 | |
| 3004 /* If we still haven't succeeded try with the device specifiers. */ | |
| 3005 CHECK_INSTANCE_ENTRY (device, matchspec, LOCALE_DEVICE); | |
| 3006 | |
| 3007 /* Last and least try the global specifiers. */ | |
| 3008 CHECK_INSTANCE_ENTRY (Qglobal, matchspec, LOCALE_GLOBAL); | |
| 3009 | |
| 434 | 3010 do_fallback: |
| 428 | 3011 /* We're out of specifiers and we still haven't generated an |
| 3012 instance. At least try the fallback ... If this fails, | |
| 3013 then we just return Qunbound. */ | |
| 3014 | |
| 3015 if (no_fallback || NILP (sp->fallback)) | |
| 3016 /* I said, I don't want the fallbacks. */ | |
| 3017 return Qunbound; | |
| 3018 | |
| 3019 if (SPECIFIERP (sp->fallback)) | |
| 3020 { | |
| 3021 /* If you introduced loops in the default specifier chain, | |
| 3022 then you're fucked, so you better not do this. */ | |
| 3023 specifier = sp->fallback; | |
| 3024 sp = XSPECIFIER (specifier); | |
| 3025 goto retry; | |
| 3026 } | |
| 3027 | |
| 3028 assert (CONSP (sp->fallback)); | |
| 3029 return specifier_instance_from_inst_list (specifier, matchspec, domain, | |
| 3030 sp->fallback, errb, no_quit, | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3031 depth, instantiator, |
|
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3032 no_fallback); |
| 428 | 3033 } |
| 3034 #undef CHECK_INSTANCE_ENTRY | |
| 3035 | |
| 3036 Lisp_Object | |
| 2953 | 3037 specifier_instance (Lisp_Object specifier, Lisp_Object matchspec, |
| 3038 Lisp_Object domain, Error_Behavior errb, int no_quit, | |
| 3039 int no_fallback, Lisp_Object depth) | |
| 3040 { | |
| 3041 return specifier_instance_1 (specifier, matchspec, domain, errb, | |
| 3042 no_quit, no_fallback, depth, NULL); | |
| 3043 } | |
| 3044 | |
| 3045 Lisp_Object | |
| 428 | 3046 specifier_instance_no_quit (Lisp_Object specifier, Lisp_Object matchspec, |
| 578 | 3047 Lisp_Object domain, Error_Behavior errb, |
| 428 | 3048 int no_fallback, Lisp_Object depth) |
| 3049 { | |
| 2953 | 3050 return specifier_instance_1 (specifier, matchspec, domain, errb, |
| 3051 1, no_fallback, depth, NULL); | |
| 3052 } | |
| 3053 | |
| 3054 static Lisp_Object | |
| 3055 specifier_matching_foo (Lisp_Object specifier, | |
| 3056 Lisp_Object matchspec, | |
| 3057 Lisp_Object domain, | |
| 3058 Lisp_Object default_, | |
| 3059 Lisp_Object no_fallback, | |
| 3060 int want_instantiator) | |
| 3061 { | |
| 3062 Lisp_Object instance, instantiator; | |
| 3063 | |
| 3064 CHECK_SPECIFIER (specifier); | |
| 3065 if (!UNBOUNDP (matchspec)) | |
| 3066 check_valid_specifier_matchspec (matchspec, | |
| 3067 XSPECIFIER (specifier)->methods, | |
| 3068 ERROR_ME); | |
| 3069 domain = decode_domain (domain); | |
| 3070 | |
| 3071 instance = specifier_instance_1 (specifier, matchspec, domain, ERROR_ME, | |
| 3072 0, !NILP (no_fallback), Qzero, | |
| 3073 &instantiator); | |
| 3074 return UNBOUNDP (instance) ? default_ : want_instantiator ? instantiator : | |
| 3075 instance; | |
| 428 | 3076 } |
| 3077 | |
| 3078 DEFUN ("specifier-instance", Fspecifier_instance, 1, 4, 0, /* | |
| 3079 Instantiate SPECIFIER (return its value) in DOMAIN. | |
| 3080 If no instance can be generated for this domain, return DEFAULT. | |
| 3081 | |
| 2953 | 3082 DOMAIN is nearly always a window (defaulting to the selected window if |
| 3083 omitted), but can be a window, frame, or device. Other values that are legal | |
| 428 | 3084 as a locale (e.g. a buffer) are not valid as a domain because they do not |
| 3085 provide enough information to identify a particular device (see | |
| 2953 | 3086 `valid-specifier-domain-p'). Window domains are used internally in nearly |
| 3087 all circumstances when computing specifier instances of display properties. | |
| 3088 Frame domains are used in a few circumstances (such as when computing the | |
| 3089 geometry of a frame based on properties such as the toolbar widths), and | |
| 3090 device domains are rarely if ever used internally. | |
| 3091 | |
| 3092 This function looks through the specifications in SPECIFIER that correspond | |
| 3093 to DOMAIN, from most specific (specifications for DOMAIN itself) to most | |
| 3094 general (global specifications), for matching instantiators, and attempts | |
| 3095 to compute an instance value for each instantiator found. The first | |
| 3096 successfully computed value is returned. The corresponding instantiator | |
| 3097 can be returned using `specifier-instantiator'. | |
| 3098 | |
| 3099 A specifier is a generalized object for controlling the value of a property -- | |
| 3100 typically, but not necessarily, a display-related property -- that can vary | |
| 3101 over particular buffers, frames, device types, etc. | |
| 3102 | |
| 3103 A fundamental distinction must be made between the specification of a | |
| 3104 property's value, and the resulting value itself. This distinction is | |
| 3105 clearest in the case of an image -- the specification describes the source | |
| 3106 of the image (for example, a file of JPEG data), and the resulting value | |
| 3107 encapsulates a window-system object describing the image as displayed on a | |
| 3108 particular device (for example, a particular X display). The specification | |
| 3109 might also be an instruction of the form "use the background pixmap of the | |
| 3110 `modeline' face". A similar mapping exists between color strings and | |
| 3111 color-instance objects, and font strings and font-instance objects. In | |
| 3112 some cases, the specification and the resulting value are of the same type, | |
| 3113 but the distinction is still logically made. | |
| 3114 | |
| 3115 The specification of a value is called an instantiator, and the resulting | |
| 3116 value the instance. | |
| 428 | 3117 |
| 3118 "Instantiating" a specifier in a particular domain means determining | |
| 3119 the specifier's "value" in that domain. This is accomplished by | |
| 3120 searching through the specifications in the specifier that correspond | |
| 3121 to all locales that can be derived from the given domain, from specific | |
| 3122 to general. In most cases, the domain is an Emacs window. In that case | |
| 3123 specifications are searched for as follows: | |
| 3124 | |
| 3125 1. A specification whose locale is the window itself; | |
| 3126 2. A specification whose locale is the window's buffer; | |
| 3127 3. A specification whose locale is the window's frame; | |
| 3128 4. A specification whose locale is the window's frame's device; | |
| 2953 | 3129 5. A specification whose locale is `global'. |
| 428 | 3130 |
| 3131 If all of those fail, then the C-code-provided fallback value for | |
| 3132 this specifier is consulted (see `specifier-fallback'). If it is | |
| 3133 an inst-list, then this function attempts to instantiate that list | |
| 3134 just as when a specification is located in the first five steps above. | |
| 3135 If the fallback is a specifier, `specifier-instance' is called | |
| 3136 recursively on this specifier and the return value used. Note, | |
| 3137 however, that if the optional argument NO-FALLBACK is non-nil, | |
| 3138 the fallback value will not be consulted. | |
| 3139 | |
| 3140 Note that there may be more than one specification matching a particular | |
| 3141 locale; all such specifications are considered before looking for any | |
| 3142 specifications for more general locales. Any particular specification | |
| 3143 that is found may be rejected because its tag set does not match the | |
| 3144 device being instantiated over, or because the specification is not | |
| 3145 valid for the device of the given domain (e.g. the font or color name | |
| 3146 does not exist for this particular X server). | |
| 3147 | |
| 793 | 3148 NOTE: When errors occur in the process of trying a particular instantiator, |
| 3149 and the instantiator is thus skipped, warnings will be issued at level | |
| 3150 `debug'. Normally, such warnings are ignored entirely, but you can change | |
| 3151 this by setting `log-warning-minimum-level'. This is useful if you're | |
| 3152 trying to debug why particular instantiators are not being processed. | |
| 3153 | |
| 428 | 3154 The returned value is dependent on the type of specifier. For example, |
| 3155 for a font specifier (as returned by the `face-font' function), the returned | |
| 3156 value will be a font-instance object. For glyphs, the returned value | |
| 2953 | 3157 will be an image-instance object. |
| 428 | 3158 |
| 3159 See also `specifier-matching-instance'. | |
| 3160 */ | |
| 3161 (specifier, domain, default_, no_fallback)) | |
| 3162 { | |
| 2953 | 3163 return specifier_matching_foo (specifier, Qunbound, domain, default_, |
| 3164 no_fallback, 0); | |
| 3165 } | |
| 3166 | |
| 3167 DEFUN ("specifier-instantiator", Fspecifier_instantiator, 1, 4, 0, /* | |
| 3168 Return instantiator that would be used to instantiate SPECIFIER in DOMAIN. | |
| 3169 If no instance can be generated for this domain, return DEFAULT. | |
| 3170 | |
| 3171 DOMAIN should be a window, frame, or device. Other values that are legal | |
| 3172 as a locale (e.g. a buffer) are not valid as a domain because they do not | |
| 3173 provide enough information to identify a particular device (see | |
| 3174 `valid-specifier-domain-p'). DOMAIN defaults to the selected window | |
| 3175 if omitted. | |
| 3176 | |
| 3177 See `specifier-instance' for more information about the instantiation process. | |
| 3178 */ | |
| 3179 (specifier, domain, default_, no_fallback)) | |
| 3180 { | |
| 3181 return specifier_matching_foo (specifier, Qunbound, domain, default_, | |
| 3182 no_fallback, 1); | |
| 428 | 3183 } |
| 3184 | |
| 3185 DEFUN ("specifier-matching-instance", Fspecifier_matching_instance, 2, 5, 0, /* | |
| 3186 Return an instance for SPECIFIER in DOMAIN that matches MATCHSPEC. | |
| 3187 If no instance can be generated for this domain, return DEFAULT. | |
| 3188 | |
| 3189 This function is identical to `specifier-instance' except that a | |
| 3190 specification will only be considered if it matches MATCHSPEC. | |
| 3191 The definition of "match", and allowed values for MATCHSPEC, are | |
| 3192 dependent on the particular type of specifier. Here are some examples: | |
| 3193 | |
| 3194 -- For chartable (e.g. display table) specifiers, MATCHSPEC should be a | |
| 3195 character, and the specification (a chartable) must give a value for | |
| 3196 that character in order to be considered. This allows you to specify, | |
| 3197 e.g., a buffer-local display table that only gives values for particular | |
| 3198 characters. All other characters are handled as if the buffer-local | |
| 3199 display table is not there. (Chartable specifiers are not yet | |
| 3200 implemented.) | |
| 3201 | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3202 -- For font specifiers, MATCHSPEC should be a cons (CHARSET . STAGE). |
| 3674 | 3203 The defined stages are currently `initial' and `final'. On X11, 'initial |
| 3204 is used when the font matching process is looking for fonts that match | |
| 3205 the desired registries of the charset--see the `charset-registries' | |
| 3206 function. If that match process fails, then the 'final stage comes into | |
| 3207 play; this means that a more general lookup is desired, and that a font | |
| 3208 doesn't necessarily have to match the desired XLFD for the face, just the | |
| 3209 charset repertoire for this charset. It also means that the charset | |
| 3210 registry and encoding used will be `iso10646-1', and the characters will | |
| 3211 be converted to display using that registry. | |
| 3212 | |
| 3213 See `define-specifier-tag' for details on how to create a tag that | |
| 3214 specifies a given character set and stage combination. You can supply | |
| 3215 such a tag to `set-face-font' in order to set a face's font for that | |
| 3216 character set and stage combination. | |
| 428 | 3217 */ |
| 3218 (specifier, matchspec, domain, default_, no_fallback)) | |
| 3219 { | |
| 2953 | 3220 return specifier_matching_foo (specifier, matchspec, domain, default_, |
| 3221 no_fallback, 0); | |
| 3222 } | |
| 3223 | |
| 3224 DEFUN ("specifier-matching-instantiator", Fspecifier_matching_instantiator, | |
| 3225 2, 5, 0, /* | |
| 3226 Return instantiator for instance of SPECIFIER in DOMAIN that matches MATCHSPEC. | |
| 3227 If no instance can be generated for this domain, return DEFAULT. | |
| 3228 | |
| 3229 This function is identical to `specifier-matching-instance' but returns | |
| 3230 the instantiator used to generate the instance, rather than the actual | |
| 3231 instance. | |
| 3232 */ | |
| 3233 (specifier, matchspec, domain, default_, no_fallback)) | |
| 3234 { | |
| 3235 return specifier_matching_foo (specifier, matchspec, domain, default_, | |
| 3236 no_fallback, 1); | |
| 3237 } | |
| 3238 | |
| 3239 static Lisp_Object | |
| 3240 specifier_matching_foo_from_inst_list (Lisp_Object specifier, | |
| 3241 Lisp_Object matchspec, | |
| 3242 Lisp_Object domain, | |
| 3243 Lisp_Object inst_list, | |
| 3244 Lisp_Object default_, | |
| 3245 int want_instantiator) | |
| 3246 { | |
| 3247 Lisp_Object val = Qunbound; | |
| 3248 Lisp_Specifier *sp = XSPECIFIER (specifier); | |
| 3249 struct gcpro gcpro1; | |
| 3250 Lisp_Object built_up_list = Qnil; | |
| 3251 Lisp_Object instantiator; | |
| 428 | 3252 |
| 3253 CHECK_SPECIFIER (specifier); | |
| 2953 | 3254 if (!UNBOUNDP (matchspec)) |
| 3255 check_valid_specifier_matchspec (matchspec, | |
| 3256 XSPECIFIER (specifier)->methods, | |
| 3257 ERROR_ME); | |
| 3258 check_valid_domain (domain); | |
| 3259 check_valid_inst_list (inst_list, sp->methods, ERROR_ME); | |
| 3260 GCPRO1 (built_up_list); | |
| 3261 built_up_list = build_up_processed_list (specifier, domain, inst_list); | |
| 3262 if (!NILP (built_up_list)) | |
| 3263 val = specifier_instance_from_inst_list (specifier, matchspec, domain, | |
| 3264 built_up_list, ERROR_ME, | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3265 0, Qzero, &instantiator, 0); |
| 2953 | 3266 UNGCPRO; |
| 3267 return UNBOUNDP (val) ? default_ : want_instantiator ? instantiator : val; | |
| 3268 | |
| 428 | 3269 } |
| 3270 | |
| 3271 DEFUN ("specifier-instance-from-inst-list", Fspecifier_instance_from_inst_list, | |
| 3272 3, 4, 0, /* | |
| 3273 Attempt to convert a particular inst-list into an instance. | |
| 3274 This attempts to instantiate INST-LIST in the given DOMAIN, | |
| 3275 as if INST-LIST existed in a specification in SPECIFIER. If | |
| 3276 the instantiation fails, DEFAULT is returned. In most circumstances, | |
| 3277 you should not use this function; use `specifier-instance' instead. | |
| 3278 */ | |
| 3279 (specifier, domain, inst_list, default_)) | |
| 3280 { | |
| 2953 | 3281 return specifier_matching_foo_from_inst_list (specifier, Qunbound, |
| 3282 domain, inst_list, default_, | |
| 3283 0); | |
| 3284 } | |
| 3285 | |
|
4426
515b91f904c1
Fix specifier inheritance behavior
Didier Verna <didier@xemacs.org>
parents:
3836
diff
changeset
|
3286 DEFUN ("specifier-instantiator-from-inst-list", |
| 3659 | 3287 Fspecifier_instantiator_from_inst_list, 3, 4, 0, /* |
| 2953 | 3288 Attempt to convert an inst-list into an instance; return instantiator. |
| 3289 This is identical to `specifier-instance-from-inst-list' but returns | |
| 3290 the instantiator used to generate the instance, rather than the instance | |
| 3291 itself. | |
| 3292 */ | |
| 3293 (specifier, domain, inst_list, default_)) | |
| 3294 { | |
| 3295 return specifier_matching_foo_from_inst_list (specifier, Qunbound, | |
| 3296 domain, inst_list, default_, | |
| 3297 1); | |
| 428 | 3298 } |
| 3299 | |
| 442 | 3300 DEFUN ("specifier-matching-instance-from-inst-list", |
| 3301 Fspecifier_matching_instance_from_inst_list, | |
| 428 | 3302 4, 5, 0, /* |
| 3303 Attempt to convert a particular inst-list into an instance. | |
| 3304 This attempts to instantiate INST-LIST in the given DOMAIN | |
| 3305 \(as if INST-LIST existed in a specification in SPECIFIER), | |
| 3306 matching the specifications against MATCHSPEC. | |
| 3307 | |
| 3308 This function is analogous to `specifier-instance-from-inst-list' | |
| 3309 but allows for specification-matching as in `specifier-matching-instance'. | |
| 3310 See that function for a description of exactly how the matching process | |
| 3311 works. | |
| 3312 */ | |
| 3313 (specifier, matchspec, domain, inst_list, default_)) | |
| 3314 { | |
| 2953 | 3315 return specifier_matching_foo_from_inst_list (specifier, matchspec, |
| 3316 domain, inst_list, default_, | |
| 3317 0); | |
| 3318 } | |
| 3319 | |
| 3320 DEFUN ("specifier-matching-instantiator-from-inst-list", | |
| 3321 Fspecifier_matching_instantiator_from_inst_list, | |
| 3322 4, 5, 0, /* | |
| 3323 Attempt to convert an inst-list into an instance; return instantiator. | |
| 3324 This is identical to `specifier-matching-instance-from-inst-list' but returns | |
| 3325 the instantiator used to generate the instance, rather than the instance | |
| 3326 itself. | |
| 3327 */ | |
| 3328 (specifier, matchspec, domain, inst_list, default_)) | |
| 3329 { | |
| 3330 return specifier_matching_foo_from_inst_list (specifier, matchspec, | |
| 3331 domain, inst_list, default_, | |
| 3332 1); | |
| 428 | 3333 } |
| 3334 | |
| 3335 | |
| 3336 /************************************************************************/ | |
| 3337 /* Caching in the struct window or frame */ | |
| 3338 /************************************************************************/ | |
| 3339 | |
| 853 | 3340 /* Cause the current value of SPECIFIER in the domain of each frame and/or |
| 3341 window to be cached in the struct frame at STRUCT_FRAME_OFFSET and the | |
| 3342 struct window at STRUCT_WINDOW_OFFSET. When the value changes in a | |
| 3343 particular window, VALUE_CHANGED_IN_WINDOW is called. When the value | |
| 3344 changes in a particular frame, VALUE_CHANGED_IN_FRAME is called. | |
| 3345 | |
| 3346 Either STRUCT_WINDOW_OFFSET or STRUCT_FRAME_OFFSET can be 0 to indicate | |
| 3347 no caching in that sort of object. However, if they're not 0, you | |
| 3348 must supply a corresponding value-changed function. (This is the case | |
| 3349 so that you are forced to consider the ramifications of a value change. | |
| 3350 You nearly always need to do something, e.g. set a dirty flag.) | |
| 3351 | |
| 3352 If you create a built-in specifier, you should do the following: | |
| 3353 | |
| 3354 - Make sure the file you create the specifier in has a | |
| 3659 | 3355 specifier_vars_of_foo() function. If not, create it, declare it in |
| 3356 symsinit.h, and make sure it's called in the appropriate place in | |
| 3357 emacs.c. | |
| 853 | 3358 - In specifier_vars_of_foo(), do a DEFVAR_SPECIFIER(), followed by |
| 3659 | 3359 initializing the specifier using Fmake_specifier(), followed by |
| 3360 set_specifier_fallback(), followed (optionally) by | |
| 3361 set_specifier_caching(). | |
| 853 | 3362 - If you used set_specifier_caching(), make sure to create the |
| 3659 | 3363 appropriate value-changed functions. Also make sure to add the |
| 3364 appropriate slots where the values are cached to frameslots.h and | |
| 3365 winslots.h. | |
| 853 | 3366 |
| 3367 Do a grep for menubar_visible_p for an example. | |
| 3368 */ | |
| 428 | 3369 |
| 3370 /* #### It would be nice if the specifier caching automatically knew | |
| 3371 about specifier fallbacks, so we didn't have to do it ourselves. */ | |
| 3372 | |
| 3373 void | |
| 3374 set_specifier_caching (Lisp_Object specifier, int struct_window_offset, | |
| 3375 void (*value_changed_in_window) | |
| 3376 (Lisp_Object specifier, struct window *w, | |
| 3377 Lisp_Object oldval), | |
| 3378 int struct_frame_offset, | |
| 3379 void (*value_changed_in_frame) | |
| 3380 (Lisp_Object specifier, struct frame *f, | |
| 444 | 3381 Lisp_Object oldval), |
| 3382 int always_recompute) | |
| 428 | 3383 { |
| 440 | 3384 Lisp_Specifier *sp = XSPECIFIER (specifier); |
| 428 | 3385 assert (!GHOST_SPECIFIER_P (sp)); |
| 3386 | |
| 3387 if (!sp->caching) | |
| 3092 | 3388 #ifdef NEW_GC |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5125
diff
changeset
|
3389 sp->caching = XSPECIFIER_CACHING (ALLOC_NORMAL_LISP_OBJECT (specifier_caching)); |
| 3092 | 3390 #else /* not NEW_GC */ |
| 3659 | 3391 sp->caching = xnew_and_zero (struct specifier_caching); |
| 3092 | 3392 #endif /* not NEW_GC */ |
| 428 | 3393 sp->caching->offset_into_struct_window = struct_window_offset; |
| 3394 sp->caching->value_changed_in_window = value_changed_in_window; | |
| 3395 sp->caching->offset_into_struct_frame = struct_frame_offset; | |
| 3396 sp->caching->value_changed_in_frame = value_changed_in_frame; | |
| 853 | 3397 if (struct_window_offset) |
| 3398 assert (value_changed_in_window); | |
| 3399 if (struct_frame_offset) | |
| 3400 assert (value_changed_in_frame); | |
| 444 | 3401 sp->caching->always_recompute = always_recompute; |
| 428 | 3402 Vcached_specifiers = Fcons (specifier, Vcached_specifiers); |
| 3403 if (BODILY_SPECIFIER_P (sp)) | |
| 3404 GHOST_SPECIFIER(sp)->caching = sp->caching; | |
| 3405 recompute_cached_specifier_everywhere (specifier); | |
| 3406 } | |
| 3407 | |
| 3408 static void | |
| 3409 recompute_one_cached_specifier_in_window (Lisp_Object specifier, | |
| 3410 struct window *w) | |
| 3411 { | |
| 3412 Lisp_Object window; | |
| 444 | 3413 Lisp_Object newval, *location, oldval; |
| 428 | 3414 |
| 3415 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier))); | |
| 3416 | |
| 793 | 3417 window = wrap_window (w); |
| 428 | 3418 |
| 3419 newval = specifier_instance (specifier, Qunbound, window, ERROR_ME_WARN, | |
| 3420 0, 0, Qzero); | |
| 3421 /* If newval ended up Qunbound, then the calling functions | |
| 3422 better be able to deal. If not, set a default so this | |
| 3423 never happens or correct it in the value_changed_in_window | |
| 3424 method. */ | |
| 3425 location = (Lisp_Object *) | |
| 3426 ((char *) w + XSPECIFIER (specifier)->caching->offset_into_struct_window); | |
| 442 | 3427 /* #### What's the point of this check, other than to optimize image |
| 3428 instance instantiation? Unless you specify a caching instantiate | |
| 3429 method the instantiation that specifier_instance will do will | |
| 3430 always create a new copy. Thus EQ will always fail. Unfortunately | |
| 3431 calling equal is no good either as this doesn't take into account | |
| 3432 things attached to the specifier - for instance strings on | |
| 3433 extents. --andyp */ | |
| 444 | 3434 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute) |
| 428 | 3435 { |
| 444 | 3436 oldval = *location; |
| 428 | 3437 *location = newval; |
| 3438 (XSPECIFIER (specifier)->caching->value_changed_in_window) | |
| 3439 (specifier, w, oldval); | |
| 3440 } | |
| 3441 } | |
| 3442 | |
| 3443 static void | |
| 3444 recompute_one_cached_specifier_in_frame (Lisp_Object specifier, | |
| 3445 struct frame *f) | |
| 3446 { | |
| 3447 Lisp_Object frame; | |
| 444 | 3448 Lisp_Object newval, *location, oldval; |
| 428 | 3449 |
| 3450 assert (!GHOST_SPECIFIER_P (XSPECIFIER (specifier))); | |
| 3451 | |
| 793 | 3452 frame = wrap_frame (f); |
| 428 | 3453 |
| 3454 newval = specifier_instance (specifier, Qunbound, frame, ERROR_ME_WARN, | |
| 3455 0, 0, Qzero); | |
| 3456 /* If newval ended up Qunbound, then the calling functions | |
| 3457 better be able to deal. If not, set a default so this | |
| 3458 never happens or correct it in the value_changed_in_frame | |
| 3459 method. */ | |
| 3460 location = (Lisp_Object *) | |
| 3461 ((char *) f + XSPECIFIER (specifier)->caching->offset_into_struct_frame); | |
| 444 | 3462 if (!EQ (newval, *location) || XSPECIFIER (specifier)->caching->always_recompute) |
| 428 | 3463 { |
| 444 | 3464 oldval = *location; |
| 428 | 3465 *location = newval; |
| 3466 (XSPECIFIER (specifier)->caching->value_changed_in_frame) | |
| 3467 (specifier, f, oldval); | |
| 3468 } | |
| 3469 } | |
| 3470 | |
| 3471 void | |
| 3472 recompute_all_cached_specifiers_in_window (struct window *w) | |
| 3473 { | |
| 3474 Lisp_Object rest; | |
| 3475 | |
| 3476 LIST_LOOP (rest, Vcached_specifiers) | |
| 3477 { | |
| 3478 Lisp_Object specifier = XCAR (rest); | |
| 3479 if (XSPECIFIER (specifier)->caching->offset_into_struct_window) | |
| 3480 recompute_one_cached_specifier_in_window (specifier, w); | |
| 3481 } | |
| 3482 } | |
| 3483 | |
| 3484 void | |
| 3485 recompute_all_cached_specifiers_in_frame (struct frame *f) | |
| 3486 { | |
| 3487 Lisp_Object rest; | |
| 3488 | |
| 3489 LIST_LOOP (rest, Vcached_specifiers) | |
| 3490 { | |
| 3491 Lisp_Object specifier = XCAR (rest); | |
| 3492 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame) | |
| 3493 recompute_one_cached_specifier_in_frame (specifier, f); | |
| 3494 } | |
| 3495 } | |
| 3496 | |
| 3497 static int | |
| 3498 recompute_cached_specifier_everywhere_mapfun (struct window *w, | |
| 3499 void *closure) | |
| 3500 { | |
| 3501 Lisp_Object specifier = Qnil; | |
| 3502 | |
| 5013 | 3503 specifier = GET_LISP_FROM_VOID (closure); |
| 428 | 3504 recompute_one_cached_specifier_in_window (specifier, w); |
| 3505 return 0; | |
| 3506 } | |
| 3507 | |
| 3508 static void | |
| 3509 recompute_cached_specifier_everywhere (Lisp_Object specifier) | |
| 3510 { | |
| 3511 Lisp_Object frmcons, devcons, concons; | |
| 3512 | |
| 3513 specifier = bodily_specifier (specifier); | |
| 3514 | |
| 3515 if (!XSPECIFIER (specifier)->caching) | |
| 3516 return; | |
| 3517 | |
| 3518 if (XSPECIFIER (specifier)->caching->offset_into_struct_window) | |
| 3519 { | |
| 3520 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 3521 map_windows (XFRAME (XCAR (frmcons)), | |
| 3522 recompute_cached_specifier_everywhere_mapfun, | |
| 5013 | 3523 STORE_LISP_IN_VOID (specifier)); |
| 428 | 3524 } |
| 3525 | |
| 3526 if (XSPECIFIER (specifier)->caching->offset_into_struct_frame) | |
| 3527 { | |
| 3528 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 3529 recompute_one_cached_specifier_in_frame (specifier, | |
| 3530 XFRAME (XCAR (frmcons))); | |
| 3531 } | |
| 3532 } | |
| 3533 | |
| 3534 DEFUN ("set-specifier-dirty-flag", Fset_specifier_dirty_flag, 1, 1, 0, /* | |
| 3535 Force recomputation of any caches associated with SPECIFIER. | |
| 3536 Note that this automatically happens whenever you change a specification | |
| 3537 in SPECIFIER; you do not have to call this function then. | |
| 3538 One example of where this function is useful is when you have a | |
| 3539 toolbar button whose `active-p' field is an expression to be | |
| 3540 evaluated. Calling `set-specifier-dirty-flag' on the | |
| 3541 toolbar specifier will force the `active-p' fields to be | |
| 3542 recomputed. | |
| 3543 */ | |
| 3544 (specifier)) | |
| 3545 { | |
| 3546 CHECK_SPECIFIER (specifier); | |
| 3547 recompute_cached_specifier_everywhere (specifier); | |
| 3548 return Qnil; | |
| 3549 } | |
| 3550 | |
| 3551 | |
| 3552 /************************************************************************/ | |
| 3553 /* Generic specifier type */ | |
| 3554 /************************************************************************/ | |
| 3555 | |
| 3556 DEFINE_SPECIFIER_TYPE (generic); | |
| 3557 | |
| 3558 #if 0 | |
| 3559 | |
| 3560 /* This is the string that used to be in `generic-specifier-p'. | |
| 3561 The idea is good, but it doesn't quite work in the form it's | |
| 3562 in. (One major problem is that validating an instantiator | |
| 3563 is supposed to require only that the specifier type is passed, | |
| 3564 while with this approach the actual specifier is needed.) | |
| 3565 | |
| 3566 What really needs to be done is to write a function | |
| 3567 `make-specifier-type' that creates new specifier types. | |
| 442 | 3568 |
| 3569 #### [I'll look into this for 19.14.] Well, sometime. (Currently | |
| 3570 May 2000, 21.2 is in development. 19.14 was released in June 1996.) */ | |
| 428 | 3571 |
| 3572 "A generic specifier is a generalized kind of specifier with user-defined\n" | |
| 3573 "semantics. The instantiator can be any kind of Lisp object, and the\n" | |
| 3574 "instance computed from it is likewise any kind of Lisp object. The\n" | |
| 3575 "SPECIFIER-DATA should be an alist of methods governing how the specifier\n" | |
| 3576 "works. All methods are optional, and reasonable default methods will be\n" | |
| 2953 | 3577 "provided. Currently there are two defined methods: `instantiate' and\n" |
| 3578 "`validate'.\n" | |
| 428 | 3579 "\n" |
| 2953 | 3580 "`instantiate' specifies how to do the instantiation; if omitted, the\n" |
| 428 | 3581 "instantiator itself is simply returned as the instance. The method\n" |
| 3582 "should be a function that accepts three parameters (a specifier, the\n" | |
| 3583 "instantiator that matched the domain being instantiated over, and that\n" | |
| 3584 "domain), and should return a one-element list containing the instance,\n" | |
| 3585 "or nil if no instance exists. Note that the domain passed to this function\n" | |
| 3586 "is the domain being instantiated over, which may not be the same as the\n" | |
| 3587 "locale contained in the specification corresponding to the instantiator\n" | |
| 3588 "(for example, the domain being instantiated over could be a window, but\n" | |
| 3589 "the locale corresponding to the passed instantiator could be the window's\n" | |
| 3590 "buffer or frame).\n" | |
| 3591 "\n" | |
| 2953 | 3592 "`validate' specifies whether a given instantiator is valid; if omitted,\n" |
| 428 | 3593 "all instantiators are considered valid. It should be a function of\n" |
| 3594 "two arguments: an instantiator and a flag CAN-SIGNAL-ERROR. If this\n" | |
| 3595 "flag is false, the function must simply return t or nil indicating\n" | |
| 3596 "whether the instantiator is valid. If this flag is true, the function\n" | |
| 3597 "is free to signal an error if it encounters an invalid instantiator\n" | |
| 3598 "(this can be useful for issuing a specific error about exactly why the\n" | |
| 3599 "instantiator is valid). It can also return nil to indicate an invalid\n" | |
| 3600 "instantiator; in this case, a general error will be signalled." | |
| 3601 | |
| 3602 #endif /* 0 */ | |
| 3603 | |
| 3604 DEFUN ("generic-specifier-p", Fgeneric_specifier_p, 1, 1, 0, /* | |
| 3605 Return non-nil if OBJECT is a generic specifier. | |
| 3606 | |
| 442 | 3607 See `make-generic-specifier' for a description of possible generic |
| 3608 instantiators. | |
| 428 | 3609 */ |
| 3610 (object)) | |
| 3611 { | |
| 3612 return GENERIC_SPECIFIERP (object) ? Qt : Qnil; | |
| 3613 } | |
| 3614 | |
| 3615 | |
| 3616 /************************************************************************/ | |
| 3617 /* Integer specifier type */ | |
| 3618 /************************************************************************/ | |
| 3619 | |
| 3620 DEFINE_SPECIFIER_TYPE (integer); | |
| 3621 | |
| 3622 static void | |
| 3623 integer_validate (Lisp_Object instantiator) | |
| 3624 { | |
| 3625 CHECK_INT (instantiator); | |
| 3626 } | |
| 3627 | |
| 3628 DEFUN ("integer-specifier-p", Finteger_specifier_p, 1, 1, 0, /* | |
| 3629 Return non-nil if OBJECT is an integer specifier. | |
| 442 | 3630 |
| 3631 See `make-integer-specifier' for a description of possible integer | |
| 3632 instantiators. | |
| 428 | 3633 */ |
| 3634 (object)) | |
| 3635 { | |
| 3636 return INTEGER_SPECIFIERP (object) ? Qt : Qnil; | |
| 3637 } | |
| 3638 | |
| 3639 /************************************************************************/ | |
| 3640 /* Non-negative-integer specifier type */ | |
| 3641 /************************************************************************/ | |
| 3642 | |
| 3643 DEFINE_SPECIFIER_TYPE (natnum); | |
| 3644 | |
| 3645 static void | |
| 3646 natnum_validate (Lisp_Object instantiator) | |
| 3647 { | |
| 3648 CHECK_NATNUM (instantiator); | |
| 3649 } | |
| 3650 | |
| 3651 DEFUN ("natnum-specifier-p", Fnatnum_specifier_p, 1, 1, 0, /* | |
| 3652 Return non-nil if OBJECT is a natnum (non-negative-integer) specifier. | |
| 442 | 3653 |
| 3654 See `make-natnum-specifier' for a description of possible natnum | |
| 3655 instantiators. | |
| 428 | 3656 */ |
| 3657 (object)) | |
| 3658 { | |
| 3659 return NATNUM_SPECIFIERP (object) ? Qt : Qnil; | |
| 3660 } | |
| 3661 | |
| 3662 /************************************************************************/ | |
| 3663 /* Boolean specifier type */ | |
| 3664 /************************************************************************/ | |
| 3665 | |
| 3666 DEFINE_SPECIFIER_TYPE (boolean); | |
| 3667 | |
| 3668 static void | |
| 3669 boolean_validate (Lisp_Object instantiator) | |
| 3670 { | |
| 3671 if (!EQ (instantiator, Qt) && !EQ (instantiator, Qnil)) | |
| 563 | 3672 invalid_constant ("Must be t or nil", instantiator); |
| 428 | 3673 } |
| 3674 | |
| 3675 DEFUN ("boolean-specifier-p", Fboolean_specifier_p, 1, 1, 0, /* | |
| 3676 Return non-nil if OBJECT is a boolean specifier. | |
| 442 | 3677 |
| 3678 See `make-boolean-specifier' for a description of possible boolean | |
| 3679 instantiators. | |
| 428 | 3680 */ |
| 3681 (object)) | |
| 3682 { | |
| 3683 return BOOLEAN_SPECIFIERP (object) ? Qt : Qnil; | |
| 3684 } | |
| 3685 | |
| 3686 /************************************************************************/ | |
| 3687 /* Display table specifier type */ | |
| 3688 /************************************************************************/ | |
| 3689 | |
| 3690 DEFINE_SPECIFIER_TYPE (display_table); | |
| 3691 | |
| 3659 | 3692 #define VALID_SINGLE_DISPTABLE_INSTANTIATOR_P(instantiator) \ |
| 3693 (VECTORP (instantiator) \ | |
| 3694 || (CHAR_TABLEP (instantiator) \ | |
| 3695 && (XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_CHAR \ | |
| 442 | 3696 || XCHAR_TABLE_TYPE (instantiator) == CHAR_TABLE_TYPE_GENERIC)) \ |
| 428 | 3697 || RANGE_TABLEP (instantiator)) |
| 3698 | |
| 3699 static void | |
| 3700 display_table_validate (Lisp_Object instantiator) | |
| 3701 { | |
| 3702 if (NILP (instantiator)) | |
| 3703 /* OK */ | |
| 3704 ; | |
| 3705 else if (CONSP (instantiator)) | |
| 3706 { | |
| 2367 | 3707 EXTERNAL_LIST_LOOP_2 (car, instantiator) |
| 428 | 3708 { |
| 3709 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (car)) | |
| 3710 goto lose; | |
| 3711 } | |
| 3712 } | |
| 3713 else | |
| 3714 { | |
| 3715 if (!VALID_SINGLE_DISPTABLE_INSTANTIATOR_P (instantiator)) | |
| 3716 { | |
| 3717 lose: | |
| 442 | 3718 dead_wrong_type_argument |
| 3719 (display_table_specifier_methods->predicate_symbol, | |
| 3659 | 3720 instantiator); |
| 428 | 3721 } |
| 3722 } | |
| 3723 } | |
| 3724 | |
| 3725 DEFUN ("display-table-specifier-p", Fdisplay_table_specifier_p, 1, 1, 0, /* | |
| 3726 Return non-nil if OBJECT is a display-table specifier. | |
| 442 | 3727 |
| 3728 See `current-display-table' for a description of possible display-table | |
| 3729 instantiators. | |
| 428 | 3730 */ |
| 3731 (object)) | |
| 3732 { | |
| 3733 return DISPLAYTABLE_SPECIFIERP (object) ? Qt : Qnil; | |
| 3734 } | |
| 3735 | |
| 3736 | |
| 3737 /************************************************************************/ | |
| 3738 /* Initialization */ | |
| 3739 /************************************************************************/ | |
| 3740 | |
| 3741 void | |
| 3742 syms_of_specifier (void) | |
| 3743 { | |
|
5117
3742ea8250b5
Checking in final CVS version of workspace 'ben-lisp-object'
Ben Wing <ben@xemacs.org>
parents:
3017
diff
changeset
|
3744 INIT_LISP_OBJECT (specifier); |
| 3092 | 3745 #ifdef NEW_GC |
|
5118
e0db3c197671
merge up to latest default branch, doesn't compile yet
Ben Wing <ben@xemacs.org>
diff
changeset
|
3746 INIT_LISP_OBJECT (specifier_caching); |
| 3092 | 3747 #endif /* NEW_GC */ |
| 442 | 3748 |
| 3749 DEFSYMBOL (Qspecifierp); | |
| 3750 | |
| 3751 DEFSYMBOL (Qconsole_type); | |
| 3752 DEFSYMBOL (Qdevice_class); | |
| 3753 | |
| 3754 /* specifier types defined in general.c. */ | |
| 428 | 3755 |
| 3756 DEFSUBR (Fvalid_specifier_type_p); | |
| 3757 DEFSUBR (Fspecifier_type_list); | |
| 3758 DEFSUBR (Fmake_specifier); | |
| 3759 DEFSUBR (Fspecifierp); | |
| 3760 DEFSUBR (Fspecifier_type); | |
| 3761 | |
| 3762 DEFSUBR (Fvalid_specifier_locale_p); | |
| 3763 DEFSUBR (Fvalid_specifier_domain_p); | |
| 3764 DEFSUBR (Fvalid_specifier_locale_type_p); | |
| 3765 DEFSUBR (Fspecifier_locale_type_from_locale); | |
| 3766 | |
| 3767 DEFSUBR (Fvalid_specifier_tag_p); | |
| 3768 DEFSUBR (Fvalid_specifier_tag_set_p); | |
| 3769 DEFSUBR (Fcanonicalize_tag_set); | |
| 3770 DEFSUBR (Fdevice_matches_specifier_tag_set_p); | |
| 3771 DEFSUBR (Fdefine_specifier_tag); | |
| 3772 DEFSUBR (Fdevice_matching_specifier_tag_list); | |
| 3673 | 3773 |
| 428 | 3774 DEFSUBR (Fspecifier_tag_list); |
| 3659 | 3775 DEFSUBR (Fspecifier_tag_device_predicate); |
| 3776 DEFSUBR (Fspecifier_tag_charset_predicate); | |
| 428 | 3777 |
| 3778 DEFSUBR (Fcheck_valid_instantiator); | |
| 3779 DEFSUBR (Fvalid_instantiator_p); | |
| 3780 DEFSUBR (Fcheck_valid_inst_list); | |
| 3781 DEFSUBR (Fvalid_inst_list_p); | |
| 3782 DEFSUBR (Fcheck_valid_spec_list); | |
| 3783 DEFSUBR (Fvalid_spec_list_p); | |
| 3784 DEFSUBR (Fadd_spec_to_specifier); | |
| 3785 DEFSUBR (Fadd_spec_list_to_specifier); | |
| 3786 DEFSUBR (Fspecifier_spec_list); | |
| 3787 DEFSUBR (Fspecifier_specs); | |
| 3788 DEFSUBR (Fremove_specifier); | |
| 3789 DEFSUBR (Fcopy_specifier); | |
| 3790 | |
| 3791 DEFSUBR (Fcheck_valid_specifier_matchspec); | |
| 3792 DEFSUBR (Fvalid_specifier_matchspec_p); | |
| 3793 DEFSUBR (Fspecifier_fallback); | |
| 3794 DEFSUBR (Fspecifier_instance); | |
| 2953 | 3795 DEFSUBR (Fspecifier_instantiator); |
| 428 | 3796 DEFSUBR (Fspecifier_matching_instance); |
| 2953 | 3797 DEFSUBR (Fspecifier_matching_instantiator); |
| 428 | 3798 DEFSUBR (Fspecifier_instance_from_inst_list); |
| 2953 | 3799 DEFSUBR (Fspecifier_instantiator_from_inst_list); |
| 428 | 3800 DEFSUBR (Fspecifier_matching_instance_from_inst_list); |
| 2953 | 3801 DEFSUBR (Fspecifier_matching_instantiator_from_inst_list); |
| 428 | 3802 DEFSUBR (Fset_specifier_dirty_flag); |
| 3803 | |
| 3804 DEFSUBR (Fgeneric_specifier_p); | |
| 3805 DEFSUBR (Finteger_specifier_p); | |
| 3806 DEFSUBR (Fnatnum_specifier_p); | |
| 3807 DEFSUBR (Fboolean_specifier_p); | |
| 3808 DEFSUBR (Fdisplay_table_specifier_p); | |
| 3809 | |
| 3810 /* Symbols pertaining to specifier creation. Specifiers are created | |
| 3811 in the syms_of() functions. */ | |
| 3812 | |
| 3813 /* locales are defined in general.c. */ | |
| 3814 | |
| 442 | 3815 /* some how-to-add flags in general.c. */ |
| 3816 DEFSYMBOL (Qremove_tag_set_prepend); | |
| 3817 DEFSYMBOL (Qremove_tag_set_append); | |
| 3818 DEFSYMBOL (Qremove_locale); | |
| 3819 DEFSYMBOL (Qremove_locale_type); | |
| 428 | 3820 } |
| 3821 | |
| 3822 void | |
| 3823 specifier_type_create (void) | |
| 3824 { | |
| 3825 the_specifier_type_entry_dynarr = Dynarr_new (specifier_type_entry); | |
| 2367 | 3826 dump_add_root_block_ptr (&the_specifier_type_entry_dynarr, &sted_description); |
| 428 | 3827 |
| 3828 Vspecifier_type_list = Qnil; | |
| 3829 staticpro (&Vspecifier_type_list); | |
| 3830 | |
| 3831 INITIALIZE_SPECIFIER_TYPE (generic, "generic", "generic-specifier-p"); | |
| 3832 | |
| 3833 INITIALIZE_SPECIFIER_TYPE (integer, "integer", "integer-specifier-p"); | |
| 3834 | |
| 3835 SPECIFIER_HAS_METHOD (integer, validate); | |
| 3836 | |
| 3837 INITIALIZE_SPECIFIER_TYPE (natnum, "natnum", "natnum-specifier-p"); | |
| 3838 | |
| 3839 SPECIFIER_HAS_METHOD (natnum, validate); | |
| 3840 | |
| 3841 INITIALIZE_SPECIFIER_TYPE (boolean, "boolean", "boolean-specifier-p"); | |
| 3842 | |
| 3843 SPECIFIER_HAS_METHOD (boolean, validate); | |
| 3844 | |
| 442 | 3845 INITIALIZE_SPECIFIER_TYPE (display_table, "display-table", |
| 3846 "display-table-p"); | |
| 428 | 3847 |
| 3848 SPECIFIER_HAS_METHOD (display_table, validate); | |
| 3849 } | |
| 3850 | |
| 3851 void | |
| 3852 reinit_specifier_type_create (void) | |
| 3853 { | |
| 3854 REINITIALIZE_SPECIFIER_TYPE (generic); | |
| 3855 REINITIALIZE_SPECIFIER_TYPE (integer); | |
| 3856 REINITIALIZE_SPECIFIER_TYPE (natnum); | |
| 3857 REINITIALIZE_SPECIFIER_TYPE (boolean); | |
| 3858 REINITIALIZE_SPECIFIER_TYPE (display_table); | |
| 3859 } | |
| 3860 | |
| 3861 void | |
| 3862 vars_of_specifier (void) | |
| 3863 { | |
| 3864 Vcached_specifiers = Qnil; | |
| 3865 staticpro (&Vcached_specifiers); | |
| 3866 | |
| 3867 /* Do NOT mark through this, or specifiers will never be GC'd. | |
| 3868 This is the same deal as for weak hash tables. */ | |
| 3869 Vall_specifiers = Qnil; | |
| 452 | 3870 dump_add_weak_object_chain (&Vall_specifiers); |
| 428 | 3871 |
| 3872 Vuser_defined_tags = Qnil; | |
| 3873 staticpro (&Vuser_defined_tags); | |
| 3874 | |
| 3875 Vunlock_ghost_specifiers = Qnil; | |
| 3876 staticpro (&Vunlock_ghost_specifiers); | |
| 3659 | 3877 |
|
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
|
3878 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
|
3879 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
|
3880 staticpro (&Vcharset_tag_lists); |
| 428 | 3881 } |