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_apply_context_t; 94 struct SubstLookup; 95 } 96 97 HB_INTERNAL void 98 hb_ot_layout_substitute_lookup (OT::hb_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 finish 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 finish 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 GDEF; 126 struct GSUB; 127 struct GPOS; 128 struct MATH; 129 struct fvar; 130 struct avar; 131 } 132 133 struct hb_ot_layout_lookup_accelerator_t 134 { 135 template <typename TLookup> 136 inline void init (const TLookup &lookup) 137 { 138 digest.init (); 139 lookup.add_coverage (&digest); 140 } 141 142 inline void fini (void) 143 { 144 } 145 146 inline bool may_have (hb_codepoint_t g) const { 147 return digest.may_have (g); 148 } 149 150 private: 151 hb_set_digest_t digest; 152 }; 153 154 struct hb_ot_layout_t 155 { 156 hb_blob_t *gdef_blob; 157 hb_blob_t *gsub_blob; 158 hb_blob_t *gpos_blob; 159 160 const struct OT::GDEF *gdef; 161 const struct OT::GSUB *gsub; 162 const struct OT::GPOS *gpos; 163 164 /* TODO Move the following out of this struct. */ 165 OT::hb_lazy_table_loader_t<struct OT::MATH> math; 166 OT::hb_lazy_table_loader_t<struct OT::fvar> fvar; 167 OT::hb_lazy_table_loader_t<struct OT::avar> avar; 168 169 unsigned int gsub_lookup_count; 170 unsigned int gpos_lookup_count; 171 172 hb_ot_layout_lookup_accelerator_t *gsub_accels; 173 hb_ot_layout_lookup_accelerator_t *gpos_accels; 174 }; 175 176 177 HB_INTERNAL hb_ot_layout_t * 178 _hb_ot_layout_create (hb_face_t *face); 179 180 HB_INTERNAL void 181 _hb_ot_layout_destroy (hb_ot_layout_t *layout); 182 183 184 #define hb_ot_layout_from_face(face) ((hb_ot_layout_t *) face->shaper_data.ot) 185 186 187 /* 188 * Buffer var routines. 189 */ 190 191 /* buffer var allocations, used during the entire shaping process */ 192 #define unicode_props() var2.u16[0] 193 194 /* buffer var allocations, used during the GSUB/GPOS processing */ 195 #define glyph_props() var1.u16[0] /* GDEF glyph properties */ 196 #define lig_props() var1.u8[2] /* GSUB/GPOS ligature tracking */ 197 #define syllable() var1.u8[3] /* GSUB/GPOS shaping boundaries */ 198 199 200 /* Loop over syllables. Based on foreach_cluster(). */ 201 #define foreach_syllable(buffer, start, end) \ 202 for (unsigned int \ 203 _count = buffer->len, \ 204 start = 0, end = _count ? _next_syllable (buffer, 0) : 0; \ 205 start < _count; \ 206 start = end, end = _next_syllable (buffer, start)) 207 208 static inline unsigned int 209 _next_syllable (hb_buffer_t *buffer, unsigned int start) 210 { 211 hb_glyph_info_t *info = buffer->info; 212 unsigned int count = buffer->len; 213 214 unsigned int syllable = info[start].syllable(); 215 while (++start < count && syllable == info[start].syllable()) 216 ; 217 218 return start; 219 } 220 221 222 /* unicode_props */ 223 224 /* Design: 225 * unicode_props() is a two-byte number. The low byte includes: 226 * - General_Category: 5 bits. 227 * - A bit each for: 228 * * Is it Default_Ignorable(); we have a modified Default_Ignorable(). 229 * * Whether it's one of the three Mongolian Free Variation Selectors, 230 * CGJ, or other characters that are hidden but should not be ignored 231 * like most other Default_Ignorable()s do during matching. 232 * * One free bit right now. 233 * 234 * The high-byte has different meanings, switched by the Gen-Cat: 235 * - For Mn,Mc,Me: the modified Combining_Class. 236 * - For Cf: whether it's ZWJ, ZWNJ, or something else. 237 * - For Ws: index of which space character this is, if space fallback 238 * is needed, ie. we don't set this by default, only if asked to. 239 */ 240 241 enum hb_unicode_props_flags_t { 242 UPROPS_MASK_GEN_CAT = 0x001Fu, 243 UPROPS_MASK_IGNORABLE = 0x0020u, 244 UPROPS_MASK_HIDDEN = 0x0040u, /* MONGOLIAN FREE VARIATION SELECTOR 1..3, 245 * or TAG characters */ 246 247 /* If GEN_CAT=FORMAT, top byte masks: */ 248 UPROPS_MASK_Cf_ZWJ = 0x0100u, 249 UPROPS_MASK_Cf_ZWNJ = 0x0200u 250 }; 251 HB_MARK_AS_FLAG_T (hb_unicode_props_flags_t); 252 253 static inline void 254 _hb_glyph_info_set_unicode_props (hb_glyph_info_t *info, hb_buffer_t *buffer) 255 { 256 hb_unicode_funcs_t *unicode = buffer->unicode; 257 unsigned int u = info->codepoint; 258 unsigned int gen_cat = (unsigned int) unicode->general_category (u); 259 unsigned int props = gen_cat; 260 261 if (u >= 0x80) 262 { 263 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII; 264 if (unlikely (unicode->is_default_ignorable (u))) 265 { 266 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_DEFAULT_IGNORABLES; 267 props |= UPROPS_MASK_IGNORABLE; 268 if (u == 0x200Cu) props |= UPROPS_MASK_Cf_ZWNJ; 269 else if (u == 0x200Du) props |= UPROPS_MASK_Cf_ZWJ; 270 /* Mongolian Free Variation Selectors need to be remembered 271 * because although we need to hide them like default-ignorables, 272 * they need to non-ignorable during shaping. This is similar to 273 * what we do for joiners in Indic-like shapers, but since the 274 * FVSes are GC=Mn, we have use a separate bit to remember them. 275 * Fixes: 276 * https://github.com/harfbuzz/harfbuzz/issues/234 */ 277 else if (unlikely (hb_in_range (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN; 278 /* TAG characters need similar treatment. Fixes: 279 * https://github.com/harfbuzz/harfbuzz/issues/463 */ 280 else if (unlikely (hb_in_range (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN; 281 /* COMBINING GRAPHEME JOINER should not be skipped; at least some times. 282 * https://github.com/harfbuzz/harfbuzz/issues/554 */ 283 else if (unlikely (u == 0x034Fu)) props |= UPROPS_MASK_HIDDEN; 284 } 285 else if (unlikely (HB_UNICODE_GENERAL_CATEGORY_IS_NON_ENCLOSING_MARK_OR_MODIFIER_SYMBOL (gen_cat))) 286 { 287 /* The above check is just an optimization to let in only things we need further 288 * processing on. */ 289 290 /* Only Mn and Mc can have non-zero ccc: 291 * http://www.unicode.org/policies/stability_policy.html#Property_Value 292 * """ 293 * Canonical_Combining_Class, General_Category 294 * All characters other than those with General_Category property values 295 * Spacing_Mark (Mc) and Nonspacing_Mark (Mn) have the Canonical_Combining_Class 296 * property value 0. 297 * 1.1.5+ 298 * """ 299 * 300 * Also, all Mn's that are Default_Ignorable, have ccc=0, hence 301 * the "else if". 302 */ 303 props |= unicode->modified_combining_class (info->codepoint)<<8; 304 305 /* Recategorize emoji skin-tone modifiers as Unicode mark, so they 306 * behave correctly in non-native directionality. They originally 307 * are MODIFIER_SYMBOL. Fixes: 308 * https://github.com/harfbuzz/harfbuzz/issues/169 309 */ 310 if (unlikely (hb_in_range (u, 0x1F3FBu, 0x1F3FFu))) 311 { 312 props = gen_cat = HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK; 313 } 314 } 315 } 316 317 info->unicode_props() = props; 318 } 319 320 static inline void 321 _hb_glyph_info_set_general_category (hb_glyph_info_t *info, 322 hb_unicode_general_category_t gen_cat) 323 { 324 /* Clears top-byte. */ 325 info->unicode_props() = (unsigned int) gen_cat | (info->unicode_props() & (0xFF & ~UPROPS_MASK_GEN_CAT)); 326 } 327 328 static inline hb_unicode_general_category_t 329 _hb_glyph_info_get_general_category (const hb_glyph_info_t *info) 330 { 331 return (hb_unicode_general_category_t) (info->unicode_props() & UPROPS_MASK_GEN_CAT); 332 } 333 334 static inline bool 335 _hb_glyph_info_is_unicode_mark (const hb_glyph_info_t *info) 336 { 337 return HB_UNICODE_GENERAL_CATEGORY_IS_MARK (info->unicode_props() & UPROPS_MASK_GEN_CAT); 338 } 339 static inline void 340 _hb_glyph_info_set_modified_combining_class (hb_glyph_info_t *info, 341 unsigned int modified_class) 342 { 343 if (unlikely (!_hb_glyph_info_is_unicode_mark (info))) 344 return; 345 info->unicode_props() = (modified_class<<8) | (info->unicode_props() & 0xFF); 346 } 347 static inline unsigned int 348 _hb_glyph_info_get_modified_combining_class (const hb_glyph_info_t *info) 349 { 350 return _hb_glyph_info_is_unicode_mark (info) ? info->unicode_props()>>8 : 0; 351 } 352 353 #define info_cc(info) (_hb_glyph_info_get_modified_combining_class (&(info))) 354 355 static inline bool 356 _hb_glyph_info_is_unicode_space (const hb_glyph_info_t *info) 357 { 358 return _hb_glyph_info_get_general_category (info) == 359 HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR; 360 } 361 static inline void 362 _hb_glyph_info_set_unicode_space_fallback_type (hb_glyph_info_t *info, hb_unicode_funcs_t::space_t s) 363 { 364 if (unlikely (!_hb_glyph_info_is_unicode_space (info))) 365 return; 366 info->unicode_props() = (((unsigned int) s)<<8) | (info->unicode_props() & 0xFF); 367 } 368 static inline hb_unicode_funcs_t::space_t 369 _hb_glyph_info_get_unicode_space_fallback_type (const hb_glyph_info_t *info) 370 { 371 return _hb_glyph_info_is_unicode_space (info) ? 372 (hb_unicode_funcs_t::space_t) (info->unicode_props()>>8) : 373 hb_unicode_funcs_t::NOT_SPACE; 374 } 375 376 static inline bool _hb_glyph_info_ligated (const hb_glyph_info_t *info); 377 378 static inline hb_bool_t 379 _hb_glyph_info_is_default_ignorable (const hb_glyph_info_t *info) 380 { 381 return (info->unicode_props() & UPROPS_MASK_IGNORABLE) && 382 !_hb_glyph_info_ligated (info); 383 } 384 static inline hb_bool_t 385 _hb_glyph_info_is_default_ignorable_and_not_hidden (const hb_glyph_info_t *info) 386 { 387 return ((info->unicode_props() & (UPROPS_MASK_IGNORABLE|UPROPS_MASK_HIDDEN)) 388 == UPROPS_MASK_IGNORABLE) && 389 !_hb_glyph_info_ligated (info); 390 } 391 392 static inline bool 393 _hb_glyph_info_is_unicode_format (const hb_glyph_info_t *info) 394 { 395 return _hb_glyph_info_get_general_category (info) == 396 HB_UNICODE_GENERAL_CATEGORY_FORMAT; 397 } 398 static inline hb_bool_t 399 _hb_glyph_info_is_zwnj (const hb_glyph_info_t *info) 400 { 401 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWNJ); 402 } 403 static inline hb_bool_t 404 _hb_glyph_info_is_zwj (const hb_glyph_info_t *info) 405 { 406 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWJ); 407 } 408 static inline hb_bool_t 409 _hb_glyph_info_is_joiner (const hb_glyph_info_t *info) 410 { 411 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & (UPROPS_MASK_Cf_ZWNJ|UPROPS_MASK_Cf_ZWJ)); 412 } 413 static inline void 414 _hb_glyph_info_flip_joiners (hb_glyph_info_t *info) 415 { 416 if (!_hb_glyph_info_is_unicode_format (info)) 417 return; 418 info->unicode_props() ^= UPROPS_MASK_Cf_ZWNJ | UPROPS_MASK_Cf_ZWJ; 419 } 420 421 /* lig_props: aka lig_id / lig_comp 422 * 423 * When a ligature is formed: 424 * 425 * - The ligature glyph and any marks in between all the same newly allocated 426 * lig_id, 427 * - The ligature glyph will get lig_num_comps set to the number of components 428 * - The marks get lig_comp > 0, reflecting which component of the ligature 429 * they were applied to. 430 * - This is used in GPOS to attach marks to the right component of a ligature 431 * in MarkLigPos, 432 * - Note that when marks are ligated together, much of the above is skipped 433 * and the current lig_id reused. 434 * 435 * When a multiple-substitution is done: 436 * 437 * - All resulting glyphs will have lig_id = 0, 438 * - The resulting glyphs will have lig_comp = 0, 1, 2, ... respectively. 439 * - This is used in GPOS to attach marks to the first component of a 440 * multiple substitution in MarkBasePos. 441 * 442 * The numbers are also used in GPOS to do mark-to-mark positioning only 443 * to marks that belong to the same component of the same ligature. 444 */ 445 446 static inline void 447 _hb_glyph_info_clear_lig_props (hb_glyph_info_t *info) 448 { 449 info->lig_props() = 0; 450 } 451 452 #define IS_LIG_BASE 0x10 453 454 static inline void 455 _hb_glyph_info_set_lig_props_for_ligature (hb_glyph_info_t *info, 456 unsigned int lig_id, 457 unsigned int lig_num_comps) 458 { 459 info->lig_props() = (lig_id << 5) | IS_LIG_BASE | (lig_num_comps & 0x0F); 460 } 461 462 static inline void 463 _hb_glyph_info_set_lig_props_for_mark (hb_glyph_info_t *info, 464 unsigned int lig_id, 465 unsigned int lig_comp) 466 { 467 info->lig_props() = (lig_id << 5) | (lig_comp & 0x0F); 468 } 469 470 static inline void 471 _hb_glyph_info_set_lig_props_for_component (hb_glyph_info_t *info, unsigned int comp) 472 { 473 _hb_glyph_info_set_lig_props_for_mark (info, 0, comp); 474 } 475 476 static inline unsigned int 477 _hb_glyph_info_get_lig_id (const hb_glyph_info_t *info) 478 { 479 return info->lig_props() >> 5; 480 } 481 482 static inline bool 483 _hb_glyph_info_ligated_internal (const hb_glyph_info_t *info) 484 { 485 return !!(info->lig_props() & IS_LIG_BASE); 486 } 487 488 static inline unsigned int 489 _hb_glyph_info_get_lig_comp (const hb_glyph_info_t *info) 490 { 491 if (_hb_glyph_info_ligated_internal (info)) 492 return 0; 493 else 494 return info->lig_props() & 0x0F; 495 } 496 497 static inline unsigned int 498 _hb_glyph_info_get_lig_num_comps (const hb_glyph_info_t *info) 499 { 500 if ((info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE) && 501 _hb_glyph_info_ligated_internal (info)) 502 return info->lig_props() & 0x0F; 503 else 504 return 1; 505 } 506 507 static inline uint8_t 508 _hb_allocate_lig_id (hb_buffer_t *buffer) { 509 uint8_t lig_id = buffer->next_serial () & 0x07; 510 if (unlikely (!lig_id)) 511 lig_id = _hb_allocate_lig_id (buffer); /* in case of overflow */ 512 return lig_id; 513 } 514 515 /* glyph_props: */ 516 517 static inline void 518 _hb_glyph_info_set_glyph_props (hb_glyph_info_t *info, unsigned int props) 519 { 520 info->glyph_props() = props; 521 } 522 523 static inline unsigned int 524 _hb_glyph_info_get_glyph_props (const hb_glyph_info_t *info) 525 { 526 return info->glyph_props(); 527 } 528 529 static inline bool 530 _hb_glyph_info_is_base_glyph (const hb_glyph_info_t *info) 531 { 532 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH); 533 } 534 535 static inline bool 536 _hb_glyph_info_is_ligature (const hb_glyph_info_t *info) 537 { 538 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE); 539 } 540 541 static inline bool 542 _hb_glyph_info_is_mark (const hb_glyph_info_t *info) 543 { 544 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MARK); 545 } 546 547 static inline bool 548 _hb_glyph_info_substituted (const hb_glyph_info_t *info) 549 { 550 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); 551 } 552 553 static inline bool 554 _hb_glyph_info_ligated (const hb_glyph_info_t *info) 555 { 556 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATED); 557 } 558 559 static inline bool 560 _hb_glyph_info_multiplied (const hb_glyph_info_t *info) 561 { 562 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); 563 } 564 565 static inline bool 566 _hb_glyph_info_ligated_and_didnt_multiply (const hb_glyph_info_t *info) 567 { 568 return _hb_glyph_info_ligated (info) && !_hb_glyph_info_multiplied (info); 569 } 570 571 static inline void 572 _hb_glyph_info_clear_ligated_and_multiplied (hb_glyph_info_t *info) 573 { 574 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | 575 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); 576 } 577 578 static inline void 579 _hb_glyph_info_clear_substituted (hb_glyph_info_t *info) 580 { 581 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); 582 } 583 584 585 /* Allocation / deallocation. */ 586 587 static inline void 588 _hb_buffer_allocate_unicode_vars (hb_buffer_t *buffer) 589 { 590 HB_BUFFER_ALLOCATE_VAR (buffer, unicode_props); 591 } 592 593 static inline void 594 _hb_buffer_deallocate_unicode_vars (hb_buffer_t *buffer) 595 { 596 HB_BUFFER_DEALLOCATE_VAR (buffer, unicode_props); 597 } 598 599 static inline void 600 _hb_buffer_assert_unicode_vars (hb_buffer_t *buffer) 601 { 602 HB_BUFFER_ASSERT_VAR (buffer, unicode_props); 603 } 604 605 static inline void 606 _hb_buffer_allocate_gsubgpos_vars (hb_buffer_t *buffer) 607 { 608 HB_BUFFER_ALLOCATE_VAR (buffer, glyph_props); 609 HB_BUFFER_ALLOCATE_VAR (buffer, lig_props); 610 HB_BUFFER_ALLOCATE_VAR (buffer, syllable); 611 } 612 613 static inline void 614 _hb_buffer_deallocate_gsubgpos_vars (hb_buffer_t *buffer) 615 { 616 HB_BUFFER_DEALLOCATE_VAR (buffer, syllable); 617 HB_BUFFER_DEALLOCATE_VAR (buffer, lig_props); 618 HB_BUFFER_DEALLOCATE_VAR (buffer, glyph_props); 619 } 620 621 static inline void 622 _hb_buffer_assert_gsubgpos_vars (hb_buffer_t *buffer) 623 { 624 HB_BUFFER_ASSERT_VAR (buffer, glyph_props); 625 HB_BUFFER_ASSERT_VAR (buffer, lig_props); 626 HB_BUFFER_ASSERT_VAR (buffer, syllable); 627 } 628 629 /* Make sure no one directly touches our props... */ 630 #undef unicode_props0 631 #undef unicode_props1 632 #undef lig_props 633 #undef glyph_props 634 635 #endif /* HB_OT_LAYOUT_PRIVATE_HH */ 636
