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_HH 30 #define HB_OT_LAYOUT_HH 31 32 #include "hb.hh" 33 34 #include "hb-font.hh" 35 #include "hb-buffer.hh" 36 #include "hb-open-type.hh" 37 #include "hb-ot-shape.hh" 38 #include "hb-set-digest.hh" 39 40 41 struct hb_ot_shape_plan_t; 42 43 44 /* 45 * kern 46 */ 47 48 HB_INTERNAL bool 49 hb_ot_layout_has_kerning (hb_face_t *face); 50 51 HB_INTERNAL bool 52 hb_ot_layout_has_machine_kerning (hb_face_t *face); 53 54 HB_INTERNAL bool 55 hb_ot_layout_has_cross_kerning (hb_face_t *face); 56 57 HB_INTERNAL void 58 hb_ot_layout_kern (const hb_ot_shape_plan_t *plan, 59 hb_font_t *font, 60 hb_buffer_t *buffer); 61 62 63 /* Private API corresponding to hb-ot-layout.h: */ 64 65 HB_INTERNAL bool 66 hb_ot_layout_table_find_feature (hb_face_t *face, 67 hb_tag_t table_tag, 68 hb_tag_t feature_tag, 69 unsigned int *feature_index); 70 71 72 /* 73 * GDEF 74 */ 75 76 enum hb_ot_layout_glyph_props_flags_t 77 { 78 /* The following three match LookupFlags::Ignore* numbers. */ 79 HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH = 0x02u, 80 HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE = 0x04u, 81 HB_OT_LAYOUT_GLYPH_PROPS_MARK = 0x08u, 82 83 /* The following are used internally; not derived from GDEF. */ 84 HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED = 0x10u, 85 HB_OT_LAYOUT_GLYPH_PROPS_LIGATED = 0x20u, 86 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED = 0x40u, 87 88 HB_OT_LAYOUT_GLYPH_PROPS_PRESERVE = HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED | 89 HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | 90 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED 91 }; 92 HB_MARK_AS_FLAG_T (hb_ot_layout_glyph_props_flags_t); 93 94 95 /* 96 * GSUB/GPOS 97 */ 98 99 HB_INTERNAL bool 100 hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face, 101 unsigned int lookup_index, 102 const hb_codepoint_t *glyphs, 103 unsigned int glyphs_length, 104 bool zero_context); 105 106 107 /* Should be called before all the substitute_lookup's are done. */ 108 HB_INTERNAL void 109 hb_ot_layout_substitute_start (hb_font_t *font, 110 hb_buffer_t *buffer); 111 112 HB_INTERNAL void 113 hb_ot_layout_delete_glyphs_inplace (hb_buffer_t *buffer, 114 bool (*filter) (const hb_glyph_info_t *info)); 115 116 namespace OT { 117 struct hb_ot_apply_context_t; 118 struct SubstLookup; 119 struct hb_ot_layout_lookup_accelerator_t; 120 } 121 122 HB_INTERNAL void 123 hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c, 124 const OT::SubstLookup &lookup, 125 const OT::hb_ot_layout_lookup_accelerator_t &accel); 126 127 128 /* Should be called before all the position_lookup's are done. */ 129 HB_INTERNAL void 130 hb_ot_layout_position_start (hb_font_t *font, 131 hb_buffer_t *buffer); 132 133 /* Should be called after all the position_lookup's are done, to fini advances. */ 134 HB_INTERNAL void 135 hb_ot_layout_position_finish_advances (hb_font_t *font, 136 hb_buffer_t *buffer); 137 138 /* Should be called after hb_ot_layout_position_finish_advances, to fini offsets. */ 139 HB_INTERNAL void 140 hb_ot_layout_position_finish_offsets (hb_font_t *font, 141 hb_buffer_t *buffer); 142 143 144 /* 145 * Buffer var routines. 146 */ 147 148 /* buffer var allocations, used during the entire shaping process */ 149 #define unicode_props() var2.u16[0] 150 151 /* buffer var allocations, used during the GSUB/GPOS processing */ 152 #define glyph_props() var1.u16[0] /* GDEF glyph properties */ 153 #define lig_props() var1.u8[2] /* GSUB/GPOS ligature tracking */ 154 #define syllable() var1.u8[3] /* GSUB/GPOS shaping boundaries */ 155 156 157 /* Loop over syllables. Based on foreach_cluster(). */ 158 #define foreach_syllable(buffer, start, end) \ 159 for (unsigned int \ 160 _count = buffer->len, \ 161 start = 0, end = _count ? _hb_next_syllable (buffer, 0) : 0; \ 162 start < _count; \ 163 start = end, end = _hb_next_syllable (buffer, start)) 164 165 static inline unsigned int 166 _hb_next_syllable (hb_buffer_t *buffer, unsigned int start) 167 { 168 hb_glyph_info_t *info = buffer->info; 169 unsigned int count = buffer->len; 170 171 unsigned int syllable = info[start].syllable(); 172 while (++start < count && syllable == info[start].syllable()) 173 ; 174 175 return start; 176 } 177 178 179 /* unicode_props */ 180 181 /* Design: 182 * unicode_props() is a two-byte number. The low byte includes: 183 * - General_Category: 5 bits. 184 * - A bit each for: 185 * * Is it Default_Ignorable(); we have a modified Default_Ignorable(). 186 * * Whether it's one of the three Mongolian Free Variation Selectors, 187 * CGJ, or other characters that are hidden but should not be ignored 188 * like most other Default_Ignorable()s do during matching. 189 * * Whether it's a grapheme continuation. 190 * 191 * The high-byte has different meanings, switched by the Gen-Cat: 192 * - For Mn,Mc,Me: the modified Combining_Class. 193 * - For Cf: whether it's ZWJ, ZWNJ, or something else. 194 * - For Ws: index of which space character this is, if space fallback 195 * is needed, ie. we don't set this by default, only if asked to. 196 */ 197 198 enum hb_unicode_props_flags_t { 199 UPROPS_MASK_GEN_CAT = 0x001Fu, 200 UPROPS_MASK_IGNORABLE = 0x0020u, 201 UPROPS_MASK_HIDDEN = 0x0040u, /* MONGOLIAN FREE VARIATION SELECTOR 1..3, or TAG characters */ 202 UPROPS_MASK_CONTINUATION=0x0080u, 203 204 /* If GEN_CAT=FORMAT, top byte masks: */ 205 UPROPS_MASK_Cf_ZWJ = 0x0100u, 206 UPROPS_MASK_Cf_ZWNJ = 0x0200u 207 }; 208 HB_MARK_AS_FLAG_T (hb_unicode_props_flags_t); 209 210 static inline void 211 _hb_glyph_info_set_unicode_props (hb_glyph_info_t *info, hb_buffer_t *buffer) 212 { 213 hb_unicode_funcs_t *unicode = buffer->unicode; 214 unsigned int u = info->codepoint; 215 unsigned int gen_cat = (unsigned int) unicode->general_category (u); 216 unsigned int props = gen_cat; 217 218 if (u >= 0x80) 219 { 220 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII; 221 222 if (unlikely (unicode->is_default_ignorable (u))) 223 { 224 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_DEFAULT_IGNORABLES; 225 props |= UPROPS_MASK_IGNORABLE; 226 if (u == 0x200Cu) props |= UPROPS_MASK_Cf_ZWNJ; 227 else if (u == 0x200Du) props |= UPROPS_MASK_Cf_ZWJ; 228 /* Mongolian Free Variation Selectors need to be remembered 229 * because although we need to hide them like default-ignorables, 230 * they need to non-ignorable during shaping. This is similar to 231 * what we do for joiners in Indic-like shapers, but since the 232 * FVSes are GC=Mn, we have use a separate bit to remember them. 233 * Fixes: 234 * https://github.com/harfbuzz/harfbuzz/issues/234 */ 235 else if (unlikely (hb_in_range (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN; 236 /* TAG characters need similar treatment. Fixes: 237 * https://github.com/harfbuzz/harfbuzz/issues/463 */ 238 else if (unlikely (hb_in_range (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN; 239 /* COMBINING GRAPHEME JOINER should not be skipped; at least some times. 240 * https://github.com/harfbuzz/harfbuzz/issues/554 */ 241 else if (unlikely (u == 0x034Fu)) 242 { 243 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_CGJ; 244 props |= UPROPS_MASK_HIDDEN; 245 } 246 } 247 248 if (unlikely (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (gen_cat))) 249 { 250 props |= UPROPS_MASK_CONTINUATION; 251 props |= unicode->modified_combining_class (u)<<8; 252 } 253 } 254 255 info->unicode_props() = props; 256 } 257 258 static inline void 259 _hb_glyph_info_set_general_category (hb_glyph_info_t *info, 260 hb_unicode_general_category_t gen_cat) 261 { 262 /* Clears top-byte. */ 263 info->unicode_props() = (unsigned int) gen_cat | (info->unicode_props() & (0xFF & ~UPROPS_MASK_GEN_CAT)); 264 } 265 266 static inline hb_unicode_general_category_t 267 _hb_glyph_info_get_general_category (const hb_glyph_info_t *info) 268 { 269 return (hb_unicode_general_category_t) (info->unicode_props() & UPROPS_MASK_GEN_CAT); 270 } 271 272 static inline bool 273 _hb_glyph_info_is_unicode_mark (const hb_glyph_info_t *info) 274 { 275 return HB_UNICODE_GENERAL_CATEGORY_IS_MARK (info->unicode_props() & UPROPS_MASK_GEN_CAT); 276 } 277 static inline void 278 _hb_glyph_info_set_modified_combining_class (hb_glyph_info_t *info, 279 unsigned int modified_class) 280 { 281 if (unlikely (!_hb_glyph_info_is_unicode_mark (info))) 282 return; 283 info->unicode_props() = (modified_class<<8) | (info->unicode_props() & 0xFF); 284 } 285 static inline unsigned int 286 _hb_glyph_info_get_modified_combining_class (const hb_glyph_info_t *info) 287 { 288 return _hb_glyph_info_is_unicode_mark (info) ? info->unicode_props()>>8 : 0; 289 } 290 #define info_cc(info) (_hb_glyph_info_get_modified_combining_class (&(info))) 291 292 static inline bool 293 _hb_glyph_info_is_unicode_space (const hb_glyph_info_t *info) 294 { 295 return _hb_glyph_info_get_general_category (info) == 296 HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR; 297 } 298 static inline void 299 _hb_glyph_info_set_unicode_space_fallback_type (hb_glyph_info_t *info, hb_unicode_funcs_t::space_t s) 300 { 301 if (unlikely (!_hb_glyph_info_is_unicode_space (info))) 302 return; 303 info->unicode_props() = (((unsigned int) s)<<8) | (info->unicode_props() & 0xFF); 304 } 305 static inline hb_unicode_funcs_t::space_t 306 _hb_glyph_info_get_unicode_space_fallback_type (const hb_glyph_info_t *info) 307 { 308 return _hb_glyph_info_is_unicode_space (info) ? 309 (hb_unicode_funcs_t::space_t) (info->unicode_props()>>8) : 310 hb_unicode_funcs_t::NOT_SPACE; 311 } 312 313 static inline bool _hb_glyph_info_ligated (const hb_glyph_info_t *info); 314 315 static inline bool 316 _hb_glyph_info_is_default_ignorable (const hb_glyph_info_t *info) 317 { 318 return (info->unicode_props() & UPROPS_MASK_IGNORABLE) && 319 !_hb_glyph_info_ligated (info); 320 } 321 static inline bool 322 _hb_glyph_info_is_default_ignorable_and_not_hidden (const hb_glyph_info_t *info) 323 { 324 return ((info->unicode_props() & (UPROPS_MASK_IGNORABLE|UPROPS_MASK_HIDDEN)) 325 == UPROPS_MASK_IGNORABLE) && 326 !_hb_glyph_info_ligated (info); 327 } 328 static inline void 329 _hb_glyph_info_unhide (hb_glyph_info_t *info) 330 { 331 info->unicode_props() &= ~ UPROPS_MASK_HIDDEN; 332 } 333 334 static inline void 335 _hb_glyph_info_set_continuation (hb_glyph_info_t *info) 336 { 337 info->unicode_props() |= UPROPS_MASK_CONTINUATION; 338 } 339 static inline void 340 _hb_glyph_info_reset_continuation (hb_glyph_info_t *info) 341 { 342 info->unicode_props() &= ~ UPROPS_MASK_CONTINUATION; 343 } 344 static inline bool 345 _hb_glyph_info_is_continuation (const hb_glyph_info_t *info) 346 { 347 return info->unicode_props() & UPROPS_MASK_CONTINUATION; 348 } 349 /* Loop over grapheme. Based on foreach_cluster(). */ 350 #define foreach_grapheme(buffer, start, end) \ 351 for (unsigned int \ 352 _count = buffer->len, \ 353 start = 0, end = _count ? _hb_next_grapheme (buffer, 0) : 0; \ 354 start < _count; \ 355 start = end, end = _hb_next_grapheme (buffer, start)) 356 357 static inline unsigned int 358 _hb_next_grapheme (hb_buffer_t *buffer, unsigned int start) 359 { 360 hb_glyph_info_t *info = buffer->info; 361 unsigned int count = buffer->len; 362 363 while (++start < count && _hb_glyph_info_is_continuation (&info[start])) 364 ; 365 366 return start; 367 } 368 369 static inline bool 370 _hb_glyph_info_is_unicode_format (const hb_glyph_info_t *info) 371 { 372 return _hb_glyph_info_get_general_category (info) == 373 HB_UNICODE_GENERAL_CATEGORY_FORMAT; 374 } 375 static inline bool 376 _hb_glyph_info_is_zwnj (const hb_glyph_info_t *info) 377 { 378 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWNJ); 379 } 380 static inline bool 381 _hb_glyph_info_is_zwj (const hb_glyph_info_t *info) 382 { 383 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWJ); 384 } 385 static inline bool 386 _hb_glyph_info_is_joiner (const hb_glyph_info_t *info) 387 { 388 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & (UPROPS_MASK_Cf_ZWNJ|UPROPS_MASK_Cf_ZWJ)); 389 } 390 static inline void 391 _hb_glyph_info_flip_joiners (hb_glyph_info_t *info) 392 { 393 if (!_hb_glyph_info_is_unicode_format (info)) 394 return; 395 info->unicode_props() ^= UPROPS_MASK_Cf_ZWNJ | UPROPS_MASK_Cf_ZWJ; 396 } 397 398 /* lig_props: aka lig_id / lig_comp 399 * 400 * When a ligature is formed: 401 * 402 * - The ligature glyph and any marks in between all the same newly allocated 403 * lig_id, 404 * - The ligature glyph will get lig_num_comps set to the number of components 405 * - The marks get lig_comp > 0, reflecting which component of the ligature 406 * they were applied to. 407 * - This is used in GPOS to attach marks to the right component of a ligature 408 * in MarkLigPos, 409 * - Note that when marks are ligated together, much of the above is skipped 410 * and the current lig_id reused. 411 * 412 * When a multiple-substitution is done: 413 * 414 * - All resulting glyphs will have lig_id = 0, 415 * - The resulting glyphs will have lig_comp = 0, 1, 2, ... respectively. 416 * - This is used in GPOS to attach marks to the first component of a 417 * multiple substitution in MarkBasePos. 418 * 419 * The numbers are also used in GPOS to do mark-to-mark positioning only 420 * to marks that belong to the same component of the same ligature. 421 */ 422 423 static inline void 424 _hb_glyph_info_clear_lig_props (hb_glyph_info_t *info) 425 { 426 info->lig_props() = 0; 427 } 428 429 #define IS_LIG_BASE 0x10 430 431 static inline void 432 _hb_glyph_info_set_lig_props_for_ligature (hb_glyph_info_t *info, 433 unsigned int lig_id, 434 unsigned int lig_num_comps) 435 { 436 info->lig_props() = (lig_id << 5) | IS_LIG_BASE | (lig_num_comps & 0x0F); 437 } 438 439 static inline void 440 _hb_glyph_info_set_lig_props_for_mark (hb_glyph_info_t *info, 441 unsigned int lig_id, 442 unsigned int lig_comp) 443 { 444 info->lig_props() = (lig_id << 5) | (lig_comp & 0x0F); 445 } 446 447 static inline void 448 _hb_glyph_info_set_lig_props_for_component (hb_glyph_info_t *info, unsigned int comp) 449 { 450 _hb_glyph_info_set_lig_props_for_mark (info, 0, comp); 451 } 452 453 static inline unsigned int 454 _hb_glyph_info_get_lig_id (const hb_glyph_info_t *info) 455 { 456 return info->lig_props() >> 5; 457 } 458 459 static inline bool 460 _hb_glyph_info_ligated_internal (const hb_glyph_info_t *info) 461 { 462 return !!(info->lig_props() & IS_LIG_BASE); 463 } 464 465 static inline unsigned int 466 _hb_glyph_info_get_lig_comp (const hb_glyph_info_t *info) 467 { 468 if (_hb_glyph_info_ligated_internal (info)) 469 return 0; 470 else 471 return info->lig_props() & 0x0F; 472 } 473 474 static inline unsigned int 475 _hb_glyph_info_get_lig_num_comps (const hb_glyph_info_t *info) 476 { 477 if ((info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE) && 478 _hb_glyph_info_ligated_internal (info)) 479 return info->lig_props() & 0x0F; 480 else 481 return 1; 482 } 483 484 static inline uint8_t 485 _hb_allocate_lig_id (hb_buffer_t *buffer) { 486 uint8_t lig_id = buffer->next_serial () & 0x07; 487 if (unlikely (!lig_id)) 488 lig_id = _hb_allocate_lig_id (buffer); /* in case of overflow */ 489 return lig_id; 490 } 491 492 /* glyph_props: */ 493 494 static inline void 495 _hb_glyph_info_set_glyph_props (hb_glyph_info_t *info, unsigned int props) 496 { 497 info->glyph_props() = props; 498 } 499 500 static inline unsigned int 501 _hb_glyph_info_get_glyph_props (const hb_glyph_info_t *info) 502 { 503 return info->glyph_props(); 504 } 505 506 static inline bool 507 _hb_glyph_info_is_base_glyph (const hb_glyph_info_t *info) 508 { 509 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH); 510 } 511 512 static inline bool 513 _hb_glyph_info_is_ligature (const hb_glyph_info_t *info) 514 { 515 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE); 516 } 517 518 static inline bool 519 _hb_glyph_info_is_mark (const hb_glyph_info_t *info) 520 { 521 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MARK); 522 } 523 524 static inline bool 525 _hb_glyph_info_substituted (const hb_glyph_info_t *info) 526 { 527 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); 528 } 529 530 static inline bool 531 _hb_glyph_info_ligated (const hb_glyph_info_t *info) 532 { 533 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATED); 534 } 535 536 static inline bool 537 _hb_glyph_info_multiplied (const hb_glyph_info_t *info) 538 { 539 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); 540 } 541 542 static inline bool 543 _hb_glyph_info_ligated_and_didnt_multiply (const hb_glyph_info_t *info) 544 { 545 return _hb_glyph_info_ligated (info) && !_hb_glyph_info_multiplied (info); 546 } 547 548 static inline void 549 _hb_glyph_info_clear_ligated_and_multiplied (hb_glyph_info_t *info) 550 { 551 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | 552 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); 553 } 554 555 static inline void 556 _hb_glyph_info_clear_substituted (hb_glyph_info_t *info) 557 { 558 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); 559 } 560 561 562 /* Allocation / deallocation. */ 563 564 static inline void 565 _hb_buffer_allocate_unicode_vars (hb_buffer_t *buffer) 566 { 567 HB_BUFFER_ALLOCATE_VAR (buffer, unicode_props); 568 } 569 570 static inline void 571 _hb_buffer_deallocate_unicode_vars (hb_buffer_t *buffer) 572 { 573 HB_BUFFER_DEALLOCATE_VAR (buffer, unicode_props); 574 } 575 576 static inline void 577 _hb_buffer_assert_unicode_vars (hb_buffer_t *buffer) 578 { 579 HB_BUFFER_ASSERT_VAR (buffer, unicode_props); 580 } 581 582 static inline void 583 _hb_buffer_allocate_gsubgpos_vars (hb_buffer_t *buffer) 584 { 585 HB_BUFFER_ALLOCATE_VAR (buffer, glyph_props); 586 HB_BUFFER_ALLOCATE_VAR (buffer, lig_props); 587 HB_BUFFER_ALLOCATE_VAR (buffer, syllable); 588 } 589 590 static inline void 591 _hb_buffer_deallocate_gsubgpos_vars (hb_buffer_t *buffer) 592 { 593 HB_BUFFER_DEALLOCATE_VAR (buffer, syllable); 594 HB_BUFFER_DEALLOCATE_VAR (buffer, lig_props); 595 HB_BUFFER_DEALLOCATE_VAR (buffer, glyph_props); 596 } 597 598 static inline void 599 _hb_buffer_assert_gsubgpos_vars (hb_buffer_t *buffer) 600 { 601 HB_BUFFER_ASSERT_VAR (buffer, glyph_props); 602 HB_BUFFER_ASSERT_VAR (buffer, lig_props); 603 HB_BUFFER_ASSERT_VAR (buffer, syllable); 604 } 605 606 /* Make sure no one directly touches our props... */ 607 #undef unicode_props0 608 #undef unicode_props1 609 #undef lig_props 610 #undef glyph_props 611 612 #endif /* HB_OT_LAYOUT_HH */ 613
