1 /* 2 * Copyright © 2007,2008,2009 Red Hat, Inc. 3 * Copyright © 2012,2013 Google, Inc. 4 * 5 * This is part of HarfBuzz, a text shaping library. 6 * 7 * Permission is hereby granted, without written agreement and without 8 * license or royalty fees, to use, copy, modify, and distribute this 9 * software and its documentation for any purpose, provided that the 10 * above copyright notice and the following two paragraphs appear in 11 * all copies of this software. 12 * 13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 17 * DAMAGE. 18 * 19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 24 * 25 * Red Hat Author(s): Behdad Esfahbod 26 * Google Author(s): Behdad Esfahbod 27 */ 28 29 #ifndef HB_OT_LAYOUT_PRIVATE_HH 30 #define HB_OT_LAYOUT_PRIVATE_HH 31 32 #include "hb-private.hh" 33 34 #include "hb-font-private.hh" 35 #include "hb-buffer-private.hh" 36 #include "hb-set-digest-private.hh" 37 #include "hb-open-type-private.hh" 38 39 40 /* Private API corresponding to hb-ot-layout.h: */ 41 42 HB_INTERNAL hb_bool_t 43 hb_ot_layout_table_find_feature (hb_face_t *face, 44 hb_tag_t table_tag, 45 hb_tag_t feature_tag, 46 unsigned int *feature_index); 47 48 49 /* 50 * GDEF 51 */ 52 53 enum hb_ot_layout_glyph_props_flags_t 54 { 55 /* The following three match LookupFlags::Ignore* numbers. */ 56 HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH = 0x02u, 57 HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE = 0x04u, 58 HB_OT_LAYOUT_GLYPH_PROPS_MARK = 0x08u, 59 60 /* The following are used internally; not derived from GDEF. */ 61 HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED = 0x10u, 62 HB_OT_LAYOUT_GLYPH_PROPS_LIGATED = 0x20u, 63 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED = 0x40u, 64 65 HB_OT_LAYOUT_GLYPH_PROPS_PRESERVE = HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED | 66 HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | 67 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED 68 }; 69 HB_MARK_AS_FLAG_T (hb_ot_layout_glyph_props_flags_t); 70 71 72 /* 73 * GSUB/GPOS 74 */ 75 76 HB_INTERNAL hb_bool_t 77 hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face, 78 unsigned int lookup_index, 79 const hb_codepoint_t *glyphs, 80 unsigned int glyphs_length, 81 hb_bool_t zero_context); 82 83 84 /* Should be called before all the substitute_lookup's are done. */ 85 HB_INTERNAL void 86 hb_ot_layout_substitute_start (hb_font_t *font, 87 hb_buffer_t *buffer); 88 89 90 struct hb_ot_layout_lookup_accelerator_t; 91 92 namespace OT { 93 struct hb_ot_apply_context_t; 94 struct SubstLookup; 95 } 96 97 HB_INTERNAL void 98 hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c, 99 const OT::SubstLookup &lookup, 100 const hb_ot_layout_lookup_accelerator_t &accel); 101 102 103 /* Should be called before all the position_lookup's are done. */ 104 HB_INTERNAL void 105 hb_ot_layout_position_start (hb_font_t *font, 106 hb_buffer_t *buffer); 107 108 /* Should be called after all the position_lookup's are done, to fini advances. */ 109 HB_INTERNAL void 110 hb_ot_layout_position_finish_advances (hb_font_t *font, 111 hb_buffer_t *buffer); 112 113 /* Should be called after hb_ot_layout_position_finish_advances, to fini offsets. */ 114 HB_INTERNAL void 115 hb_ot_layout_position_finish_offsets (hb_font_t *font, 116 hb_buffer_t *buffer); 117 118 119 120 /* 121 * hb_ot_layout_t 122 */ 123 124 namespace OT { 125 struct BASE; 126 struct COLR; 127 struct CPAL; 128 struct GDEF; 129 struct GSUB; 130 struct GPOS; 131 struct MATH; 132 struct fvar; 133 struct avar; 134 } 135 136 namespace AAT { 137 struct ankr; 138 struct kerx; 139 struct morx; 140 struct trak; 141 } 142 143 struct hb_ot_layout_lookup_accelerator_t 144 { 145 template <typename TLookup> 146 inline void init (const TLookup &lookup) 147 { 148 digest.init (); 149 lookup.add_coverage (&digest); 150 } 151 152 inline void fini (void) 153 { 154 } 155 156 inline bool may_have (hb_codepoint_t g) const { 157 return digest.may_have (g); 158 } 159 160 private: 161 hb_set_digest_t digest; 162 }; 163 164 struct hb_ot_layout_t 165 { 166 hb_blob_t *gdef_blob; 167 hb_blob_t *gsub_blob; 168 hb_blob_t *gpos_blob; 169 170 const struct OT::GDEF *gdef; 171 const struct OT::GSUB *gsub; 172 const struct OT::GPOS *gpos; 173 174 /* TODO Move the following out of this struct. */ 175 OT::hb_table_lazy_loader_t<struct OT::BASE> base; 176 OT::hb_table_lazy_loader_t<struct OT::MATH> math; 177 OT::hb_table_lazy_loader_t<struct OT::fvar> fvar; 178 OT::hb_table_lazy_loader_t<struct OT::avar> avar; 179 180 unsigned int gsub_lookup_count; 181 unsigned int gpos_lookup_count; 182 183 hb_ot_layout_lookup_accelerator_t *gsub_accels; 184 hb_ot_layout_lookup_accelerator_t *gpos_accels; 185 }; 186 187 188 HB_INTERNAL hb_ot_layout_t * 189 _hb_ot_layout_create (hb_face_t *face); 190 191 HB_INTERNAL void 192 _hb_ot_layout_destroy (hb_ot_layout_t *layout); 193 194 195 #define hb_ot_layout_from_face(face) ((hb_ot_layout_t *) face->shaper_data.ot) 196 197 198 /* 199 * Buffer var routines. 200 */ 201 202 /* buffer var allocations, used during the entire shaping process */ 203 #define unicode_props() var2.u16[0] 204 205 /* buffer var allocations, used during the GSUB/GPOS processing */ 206 #define glyph_props() var1.u16[0] /* GDEF glyph properties */ 207 #define lig_props() var1.u8[2] /* GSUB/GPOS ligature tracking */ 208 #define syllable() var1.u8[3] /* GSUB/GPOS shaping boundaries */ 209 210 211 /* Loop over syllables. Based on foreach_cluster(). */ 212 #define foreach_syllable(buffer, start, end) \ 213 for (unsigned int \ 214 _count = buffer->len, \ 215 start = 0, end = _count ? _next_syllable (buffer, 0) : 0; \ 216 start < _count; \ 217 start = end, end = _next_syllable (buffer, start)) 218 219 static inline unsigned int 220 _next_syllable (hb_buffer_t *buffer, unsigned int start) 221 { 222 hb_glyph_info_t *info = buffer->info; 223 unsigned int count = buffer->len; 224 225 unsigned int syllable = info[start].syllable(); 226 while (++start < count && syllable == info[start].syllable()) 227 ; 228 229 return start; 230 } 231 232 233 /* unicode_props */ 234 235 /* Design: 236 * unicode_props() is a two-byte number. The low byte includes: 237 * - General_Category: 5 bits. 238 * - A bit each for: 239 * * Is it Default_Ignorable(); we have a modified Default_Ignorable(). 240 * * Whether it's one of the three Mongolian Free Variation Selectors, 241 * CGJ, or other characters that are hidden but should not be ignored 242 * like most other Default_Ignorable()s do during matching. 243 * * One free bit right now. 244 * 245 * The high-byte has different meanings, switched by the Gen-Cat: 246 * - For Mn,Mc,Me: the modified Combining_Class. 247 * - For Cf: whether it's ZWJ, ZWNJ, or something else. 248 * - For Ws: index of which space character this is, if space fallback 249 * is needed, ie. we don't set this by default, only if asked to. 250 */ 251 252 enum hb_unicode_props_flags_t { 253 UPROPS_MASK_GEN_CAT = 0x001Fu, 254 UPROPS_MASK_IGNORABLE = 0x0020u, 255 UPROPS_MASK_HIDDEN = 0x0040u, /* MONGOLIAN FREE VARIATION SELECTOR 1..3, 256 * or TAG characters */ 257 258 /* If GEN_CAT=FORMAT, top byte masks: */ 259 UPROPS_MASK_Cf_ZWJ = 0x0100u, 260 UPROPS_MASK_Cf_ZWNJ = 0x0200u 261 }; 262 HB_MARK_AS_FLAG_T (hb_unicode_props_flags_t); 263 264 static inline void 265 _hb_glyph_info_set_unicode_props (hb_glyph_info_t *info, hb_buffer_t *buffer) 266 { 267 hb_unicode_funcs_t *unicode = buffer->unicode; 268 unsigned int u = info->codepoint; 269 unsigned int gen_cat = (unsigned int) unicode->general_category (u); 270 unsigned int props = gen_cat; 271 272 if (u >= 0x80) 273 { 274 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII; 275 if (unlikely (unicode->is_default_ignorable (u))) 276 { 277 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_DEFAULT_IGNORABLES; 278 props |= UPROPS_MASK_IGNORABLE; 279 if (u == 0x200Cu) props |= UPROPS_MASK_Cf_ZWNJ; 280 else if (u == 0x200Du) props |= UPROPS_MASK_Cf_ZWJ; 281 /* Mongolian Free Variation Selectors need to be remembered 282 * because although we need to hide them like default-ignorables, 283 * they need to non-ignorable during shaping. This is similar to 284 * what we do for joiners in Indic-like shapers, but since the 285 * FVSes are GC=Mn, we have use a separate bit to remember them. 286 * Fixes: 287 * https://github.com/harfbuzz/harfbuzz/issues/234 */ 288 else if (unlikely (hb_in_range (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN; 289 /* TAG characters need similar treatment. Fixes: 290 * https://github.com/harfbuzz/harfbuzz/issues/463 */ 291 else if (unlikely (hb_in_range (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN; 292 /* COMBINING GRAPHEME JOINER should not be skipped; at least some times. 293 * https://github.com/harfbuzz/harfbuzz/issues/554 */ 294 else if (unlikely (u == 0x034Fu)) 295 { 296 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_CGJ; 297 props |= UPROPS_MASK_HIDDEN; 298 } 299 } 300 else if (unlikely (HB_UNICODE_GENERAL_CATEGORY_IS_NON_ENCLOSING_MARK_OR_MODIFIER_SYMBOL (gen_cat))) 301 { 302 /* The above check is just an optimization to let in only things we need further 303 * processing on. */ 304 305 /* Only Mn and Mc can have non-zero ccc: 306 * https://unicode.org/policies/stability_policy.html#Property_Value 307 * """ 308 * Canonical_Combining_Class, General_Category 309 * All characters other than those with General_Category property values 310 * Spacing_Mark (Mc) and Nonspacing_Mark (Mn) have the Canonical_Combining_Class 311 * property value 0. 312 * 1.1.5+ 313 * """ 314 * 315 * Also, all Mn's that are Default_Ignorable, have ccc=0, hence 316 * the "else if". 317 */ 318 props |= unicode->modified_combining_class (info->codepoint)<<8; 319 320 /* Recategorize emoji skin-tone modifiers as Unicode mark, so they 321 * behave correctly in non-native directionality. They originally 322 * are MODIFIER_SYMBOL. Fixes: 323 * https://github.com/harfbuzz/harfbuzz/issues/169 324 */ 325 if (unlikely (hb_in_range (u, 0x1F3FBu, 0x1F3FFu))) 326 { 327 props = gen_cat = HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK; 328 } 329 } 330 } 331 332 info->unicode_props() = props; 333 } 334 335 static inline void 336 _hb_glyph_info_set_general_category (hb_glyph_info_t *info, 337 hb_unicode_general_category_t gen_cat) 338 { 339 /* Clears top-byte. */ 340 info->unicode_props() = (unsigned int) gen_cat | (info->unicode_props() & (0xFF & ~UPROPS_MASK_GEN_CAT)); 341 } 342 343 static inline hb_unicode_general_category_t 344 _hb_glyph_info_get_general_category (const hb_glyph_info_t *info) 345 { 346 return (hb_unicode_general_category_t) (info->unicode_props() & UPROPS_MASK_GEN_CAT); 347 } 348 349 static inline bool 350 _hb_glyph_info_is_unicode_mark (const hb_glyph_info_t *info) 351 { 352 return HB_UNICODE_GENERAL_CATEGORY_IS_MARK (info->unicode_props() & UPROPS_MASK_GEN_CAT); 353 } 354 static inline void 355 _hb_glyph_info_set_modified_combining_class (hb_glyph_info_t *info, 356 unsigned int modified_class) 357 { 358 if (unlikely (!_hb_glyph_info_is_unicode_mark (info))) 359 return; 360 info->unicode_props() = (modified_class<<8) | (info->unicode_props() & 0xFF); 361 } 362 static inline unsigned int 363 _hb_glyph_info_get_modified_combining_class (const hb_glyph_info_t *info) 364 { 365 return _hb_glyph_info_is_unicode_mark (info) ? info->unicode_props()>>8 : 0; 366 } 367 368 369 /* Loop over grapheme. Based on foreach_cluster(). */ 370 #define foreach_grapheme(buffer, start, end) \ 371 for (unsigned int \ 372 _count = buffer->len, \ 373 start = 0, end = _count ? _next_grapheme (buffer, 0) : 0; \ 374 start < _count; \ 375 start = end, end = _next_grapheme (buffer, start)) 376 377 static inline unsigned int 378 _next_grapheme (hb_buffer_t *buffer, unsigned int start) 379 { 380 hb_glyph_info_t *info = buffer->info; 381 unsigned int count = buffer->len; 382 383 while (++start < count && _hb_glyph_info_is_unicode_mark (&info[start])) 384 ; 385 386 return start; 387 } 388 389 390 #define info_cc(info) (_hb_glyph_info_get_modified_combining_class (&(info))) 391 392 static inline bool 393 _hb_glyph_info_is_unicode_space (const hb_glyph_info_t *info) 394 { 395 return _hb_glyph_info_get_general_category (info) == 396 HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR; 397 } 398 static inline void 399 _hb_glyph_info_set_unicode_space_fallback_type (hb_glyph_info_t *info, hb_unicode_funcs_t::space_t s) 400 { 401 if (unlikely (!_hb_glyph_info_is_unicode_space (info))) 402 return; 403 info->unicode_props() = (((unsigned int) s)<<8) | (info->unicode_props() & 0xFF); 404 } 405 static inline hb_unicode_funcs_t::space_t 406 _hb_glyph_info_get_unicode_space_fallback_type (const hb_glyph_info_t *info) 407 { 408 return _hb_glyph_info_is_unicode_space (info) ? 409 (hb_unicode_funcs_t::space_t) (info->unicode_props()>>8) : 410 hb_unicode_funcs_t::NOT_SPACE; 411 } 412 413 static inline bool _hb_glyph_info_ligated (const hb_glyph_info_t *info); 414 415 static inline hb_bool_t 416 _hb_glyph_info_is_default_ignorable (const hb_glyph_info_t *info) 417 { 418 return (info->unicode_props() & UPROPS_MASK_IGNORABLE) && 419 !_hb_glyph_info_ligated (info); 420 } 421 static inline hb_bool_t 422 _hb_glyph_info_is_default_ignorable_and_not_hidden (const hb_glyph_info_t *info) 423 { 424 return ((info->unicode_props() & (UPROPS_MASK_IGNORABLE|UPROPS_MASK_HIDDEN)) 425 == UPROPS_MASK_IGNORABLE) && 426 !_hb_glyph_info_ligated (info); 427 } 428 static inline void 429 _hb_glyph_info_unhide (hb_glyph_info_t *info) 430 { 431 info->unicode_props() &= ~ UPROPS_MASK_HIDDEN; 432 } 433 434 static inline bool 435 _hb_glyph_info_is_unicode_format (const hb_glyph_info_t *info) 436 { 437 return _hb_glyph_info_get_general_category (info) == 438 HB_UNICODE_GENERAL_CATEGORY_FORMAT; 439 } 440 static inline hb_bool_t 441 _hb_glyph_info_is_zwnj (const hb_glyph_info_t *info) 442 { 443 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWNJ); 444 } 445 static inline hb_bool_t 446 _hb_glyph_info_is_zwj (const hb_glyph_info_t *info) 447 { 448 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWJ); 449 } 450 static inline hb_bool_t 451 _hb_glyph_info_is_joiner (const hb_glyph_info_t *info) 452 { 453 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & (UPROPS_MASK_Cf_ZWNJ|UPROPS_MASK_Cf_ZWJ)); 454 } 455 static inline void 456 _hb_glyph_info_flip_joiners (hb_glyph_info_t *info) 457 { 458 if (!_hb_glyph_info_is_unicode_format (info)) 459 return; 460 info->unicode_props() ^= UPROPS_MASK_Cf_ZWNJ | UPROPS_MASK_Cf_ZWJ; 461 } 462 463 /* lig_props: aka lig_id / lig_comp 464 * 465 * When a ligature is formed: 466 * 467 * - The ligature glyph and any marks in between all the same newly allocated 468 * lig_id, 469 * - The ligature glyph will get lig_num_comps set to the number of components 470 * - The marks get lig_comp > 0, reflecting which component of the ligature 471 * they were applied to. 472 * - This is used in GPOS to attach marks to the right component of a ligature 473 * in MarkLigPos, 474 * - Note that when marks are ligated together, much of the above is skipped 475 * and the current lig_id reused. 476 * 477 * When a multiple-substitution is done: 478 * 479 * - All resulting glyphs will have lig_id = 0, 480 * - The resulting glyphs will have lig_comp = 0, 1, 2, ... respectively. 481 * - This is used in GPOS to attach marks to the first component of a 482 * multiple substitution in MarkBasePos. 483 * 484 * The numbers are also used in GPOS to do mark-to-mark positioning only 485 * to marks that belong to the same component of the same ligature. 486 */ 487 488 static inline void 489 _hb_glyph_info_clear_lig_props (hb_glyph_info_t *info) 490 { 491 info->lig_props() = 0; 492 } 493 494 #define IS_LIG_BASE 0x10 495 496 static inline void 497 _hb_glyph_info_set_lig_props_for_ligature (hb_glyph_info_t *info, 498 unsigned int lig_id, 499 unsigned int lig_num_comps) 500 { 501 info->lig_props() = (lig_id << 5) | IS_LIG_BASE | (lig_num_comps & 0x0F); 502 } 503 504 static inline void 505 _hb_glyph_info_set_lig_props_for_mark (hb_glyph_info_t *info, 506 unsigned int lig_id, 507 unsigned int lig_comp) 508 { 509 info->lig_props() = (lig_id << 5) | (lig_comp & 0x0F); 510 } 511 512 static inline void 513 _hb_glyph_info_set_lig_props_for_component (hb_glyph_info_t *info, unsigned int comp) 514 { 515 _hb_glyph_info_set_lig_props_for_mark (info, 0, comp); 516 } 517 518 static inline unsigned int 519 _hb_glyph_info_get_lig_id (const hb_glyph_info_t *info) 520 { 521 return info->lig_props() >> 5; 522 } 523 524 static inline bool 525 _hb_glyph_info_ligated_internal (const hb_glyph_info_t *info) 526 { 527 return !!(info->lig_props() & IS_LIG_BASE); 528 } 529 530 static inline unsigned int 531 _hb_glyph_info_get_lig_comp (const hb_glyph_info_t *info) 532 { 533 if (_hb_glyph_info_ligated_internal (info)) 534 return 0; 535 else 536 return info->lig_props() & 0x0F; 537 } 538 539 static inline unsigned int 540 _hb_glyph_info_get_lig_num_comps (const hb_glyph_info_t *info) 541 { 542 if ((info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE) && 543 _hb_glyph_info_ligated_internal (info)) 544 return info->lig_props() & 0x0F; 545 else 546 return 1; 547 } 548 549 static inline uint8_t 550 _hb_allocate_lig_id (hb_buffer_t *buffer) { 551 uint8_t lig_id = buffer->next_serial () & 0x07; 552 if (unlikely (!lig_id)) 553 lig_id = _hb_allocate_lig_id (buffer); /* in case of overflow */ 554 return lig_id; 555 } 556 557 /* glyph_props: */ 558 559 static inline void 560 _hb_glyph_info_set_glyph_props (hb_glyph_info_t *info, unsigned int props) 561 { 562 info->glyph_props() = props; 563 } 564 565 static inline unsigned int 566 _hb_glyph_info_get_glyph_props (const hb_glyph_info_t *info) 567 { 568 return info->glyph_props(); 569 } 570 571 static inline bool 572 _hb_glyph_info_is_base_glyph (const hb_glyph_info_t *info) 573 { 574 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH); 575 } 576 577 static inline bool 578 _hb_glyph_info_is_ligature (const hb_glyph_info_t *info) 579 { 580 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE); 581 } 582 583 static inline bool 584 _hb_glyph_info_is_mark (const hb_glyph_info_t *info) 585 { 586 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MARK); 587 } 588 589 static inline bool 590 _hb_glyph_info_substituted (const hb_glyph_info_t *info) 591 { 592 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); 593 } 594 595 static inline bool 596 _hb_glyph_info_ligated (const hb_glyph_info_t *info) 597 { 598 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATED); 599 } 600 601 static inline bool 602 _hb_glyph_info_multiplied (const hb_glyph_info_t *info) 603 { 604 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); 605 } 606 607 static inline bool 608 _hb_glyph_info_ligated_and_didnt_multiply (const hb_glyph_info_t *info) 609 { 610 return _hb_glyph_info_ligated (info) && !_hb_glyph_info_multiplied (info); 611 } 612 613 static inline void 614 _hb_glyph_info_clear_ligated_and_multiplied (hb_glyph_info_t *info) 615 { 616 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | 617 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); 618 } 619 620 static inline void 621 _hb_glyph_info_clear_substituted (hb_glyph_info_t *info) 622 { 623 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); 624 } 625 626 627 /* Allocation / deallocation. */ 628 629 static inline void 630 _hb_buffer_allocate_unicode_vars (hb_buffer_t *buffer) 631 { 632 HB_BUFFER_ALLOCATE_VAR (buffer, unicode_props); 633 } 634 635 static inline void 636 _hb_buffer_deallocate_unicode_vars (hb_buffer_t *buffer) 637 { 638 HB_BUFFER_DEALLOCATE_VAR (buffer, unicode_props); 639 } 640 641 static inline void 642 _hb_buffer_assert_unicode_vars (hb_buffer_t *buffer) 643 { 644 HB_BUFFER_ASSERT_VAR (buffer, unicode_props); 645 } 646 647 static inline void 648 _hb_buffer_allocate_gsubgpos_vars (hb_buffer_t *buffer) 649 { 650 HB_BUFFER_ALLOCATE_VAR (buffer, glyph_props); 651 HB_BUFFER_ALLOCATE_VAR (buffer, lig_props); 652 HB_BUFFER_ALLOCATE_VAR (buffer, syllable); 653 } 654 655 static inline void 656 _hb_buffer_deallocate_gsubgpos_vars (hb_buffer_t *buffer) 657 { 658 HB_BUFFER_DEALLOCATE_VAR (buffer, syllable); 659 HB_BUFFER_DEALLOCATE_VAR (buffer, lig_props); 660 HB_BUFFER_DEALLOCATE_VAR (buffer, glyph_props); 661 } 662 663 static inline void 664 _hb_buffer_assert_gsubgpos_vars (hb_buffer_t *buffer) 665 { 666 HB_BUFFER_ASSERT_VAR (buffer, glyph_props); 667 HB_BUFFER_ASSERT_VAR (buffer, lig_props); 668 HB_BUFFER_ASSERT_VAR (buffer, syllable); 669 } 670 671 /* Make sure no one directly touches our props... */ 672 #undef unicode_props0 673 #undef unicode_props1 674 #undef lig_props 675 #undef glyph_props 676 677 #endif /* HB_OT_LAYOUT_PRIVATE_HH */