1 /* 2 * Copyright © 2007,2008,2009 Red Hat, Inc. 3 * Copyright © 2011,2012 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_HH 30 #define HB_HH 31 32 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC 33 #ifdef _MSC_VER 34 #pragma warning( disable: 4068 ) /* Unknown pragma */ 35 #endif 36 #if defined(__GNUC__) || defined(__clang__) 37 /* Rules: 38 * 39 * - All pragmas are declared GCC even if they are clang ones. Otherwise GCC 40 * nags, even though we instruct it to ignore -Wunknown-pragmas. ¯\_(ツ)_/¯ 41 * 42 * - Within each category, keep sorted. 43 * 44 * - Warnings whose scope can be expanded in future compiler versions shall 45 * be declared as "warning". Otherwise, either ignored or error. 46 */ 47 48 /* Setup. Don't sort order within this category. */ 49 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING 50 #pragma GCC diagnostic warning "-Wall" 51 #pragma GCC diagnostic warning "-Wextra" 52 #endif 53 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED 54 #pragma GCC diagnostic ignored "-Wpragmas" 55 #pragma GCC diagnostic ignored "-Wunknown-pragmas" 56 #pragma GCC diagnostic ignored "-Wunknown-warning-option" 57 #endif 58 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING 59 //#pragma GCC diagnostic warning "-Weverything" 60 #endif 61 62 /* Error. Should never happen. */ 63 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_ERROR 64 #pragma GCC diagnostic error "-Wbitwise-instead-of-logical" 65 #pragma GCC diagnostic error "-Wcast-align" 66 #pragma GCC diagnostic error "-Wcast-function-type" 67 #pragma GCC diagnostic error "-Wcast-function-type-strict" 68 #pragma GCC diagnostic error "-Wconstant-conversion" 69 #pragma GCC diagnostic error "-Wcomma" 70 #pragma GCC diagnostic error "-Wdelete-non-virtual-dtor" 71 #pragma GCC diagnostic error "-Wembedded-directive" 72 #pragma GCC diagnostic error "-Wextra-semi-stmt" 73 #pragma GCC diagnostic error "-Wformat-security" 74 #pragma GCC diagnostic error "-Wimplicit-function-declaration" 75 #pragma GCC diagnostic error "-Winit-self" 76 #pragma GCC diagnostic error "-Winjected-class-name" 77 #pragma GCC diagnostic error "-Wmissing-braces" 78 #pragma GCC diagnostic error "-Wmissing-declarations" 79 #pragma GCC diagnostic error "-Wmissing-prototypes" 80 #pragma GCC diagnostic error "-Wnarrowing" 81 #pragma GCC diagnostic error "-Wnested-externs" 82 #pragma GCC diagnostic error "-Wold-style-definition" 83 #pragma GCC diagnostic error "-Wpointer-arith" 84 #pragma GCC diagnostic error "-Wredundant-decls" 85 #pragma GCC diagnostic error "-Wreorder" 86 #pragma GCC diagnostic error "-Wsign-compare" 87 #pragma GCC diagnostic error "-Wstrict-flex-arrays" 88 #pragma GCC diagnostic error "-Wstrict-prototypes" 89 #pragma GCC diagnostic error "-Wstring-conversion" 90 #pragma GCC diagnostic error "-Wswitch-enum" 91 #pragma GCC diagnostic error "-Wtautological-overlap-compare" 92 #pragma GCC diagnostic error "-Wunneeded-internal-declaration" 93 #pragma GCC diagnostic error "-Wunused" 94 #pragma GCC diagnostic error "-Wunused-local-typedefs" 95 #pragma GCC diagnostic error "-Wunused-value" 96 #pragma GCC diagnostic error "-Wunused-variable" 97 #pragma GCC diagnostic error "-Wvla" 98 #pragma GCC diagnostic error "-Wwrite-strings" 99 #endif 100 101 /* Warning. To be investigated if happens. */ 102 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING 103 #pragma GCC diagnostic warning "-Wbuiltin-macro-redefined" 104 #pragma GCC diagnostic warning "-Wdeprecated" 105 #pragma GCC diagnostic warning "-Wdeprecated-declarations" 106 #pragma GCC diagnostic warning "-Wdisabled-optimization" 107 #pragma GCC diagnostic warning "-Wdouble-promotion" 108 #pragma GCC diagnostic warning "-Wformat=2" 109 #pragma GCC diagnostic warning "-Wformat-signedness" 110 #pragma GCC diagnostic warning "-Wignored-pragma-optimize" 111 #pragma GCC diagnostic warning "-Wlogical-op" 112 #pragma GCC diagnostic warning "-Wmaybe-uninitialized" 113 #pragma GCC diagnostic warning "-Wmissing-format-attribute" 114 #pragma GCC diagnostic warning "-Wundef" 115 #pragma GCC diagnostic warning "-Wunsafe-loop-optimizations" 116 #pragma GCC diagnostic warning "-Wunused-but-set-variable" 117 #endif 118 119 /* Ignored currently, but should be fixed at some point. */ 120 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED 121 #pragma GCC diagnostic ignored "-Wconversion" // TODO fix 122 #pragma GCC diagnostic ignored "-Wshadow" // TODO fix 123 #pragma GCC diagnostic ignored "-Wunused-parameter" // TODO fix 124 #if defined(__GNUC__) && !defined(__clang__) 125 #pragma GCC diagnostic ignored "-Wunused-result" // TODO fix 126 #endif 127 #endif 128 129 /* Ignored intentionally. */ 130 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED 131 #pragma GCC diagnostic ignored "-Wclass-memaccess" 132 #pragma GCC diagnostic ignored "-Wcast-function-type-strict" // https://github.com/harfbuzz/harfbuzz/pull/3859#issuecomment-1295409126 133 #pragma GCC diagnostic ignored "-Wdangling-reference" // https://github.com/harfbuzz/harfbuzz/issues/4043 134 #pragma GCC diagnostic ignored "-Wformat-nonliteral" 135 #pragma GCC diagnostic ignored "-Wformat-zero-length" 136 #pragma GCC diagnostic ignored "-Wmissing-field-initializers" 137 #pragma GCC diagnostic ignored "-Wpacked" // Erratic impl in clang 138 #pragma GCC diagnostic ignored "-Wrange-loop-analysis" // https://github.com/harfbuzz/harfbuzz/issues/2834 139 #pragma GCC diagnostic ignored "-Wstrict-aliasing" 140 #pragma GCC diagnostic ignored "-Wtype-limits" 141 #pragma GCC diagnostic ignored "-Wc++11-compat" // only gcc raises it 142 #endif 143 144 #endif 145 #endif 146 147 148 #include "hb-config.hh" 149 #include "hb-limits.hh" 150 151 152 /* 153 * Following added based on what AC_USE_SYSTEM_EXTENSIONS adds to 154 * config.h.in. Copied here for the convenience of those embedding 155 * HarfBuzz and not using our build system. 156 */ 157 /* Enable extensions on AIX 3, Interix. */ 158 #ifndef _ALL_SOURCE 159 # define _ALL_SOURCE 1 160 #endif 161 /* Enable GNU extensions on systems that have them. */ 162 #ifndef _GNU_SOURCE 163 # define _GNU_SOURCE 1 164 #endif 165 /* Enable threading extensions on Solaris. */ 166 #ifndef _POSIX_PTHREAD_SEMANTICS 167 # define _POSIX_PTHREAD_SEMANTICS 1 168 #endif 169 /* Enable extensions on HP NonStop. */ 170 #ifndef _TANDEM_SOURCE 171 # define _TANDEM_SOURCE 1 172 #endif 173 /* Enable general extensions on Solaris. */ 174 #ifndef __EXTENSIONS__ 175 # define __EXTENSIONS__ 1 176 #endif 177 178 #if defined (_MSC_VER) && defined (HB_DLL_EXPORT) 179 #define HB_EXTERN __declspec (dllexport) extern 180 #endif 181 182 // https://github.com/harfbuzz/harfbuzz/pull/4619 183 #ifndef __STDC_FORMAT_MACROS 184 #define __STDC_FORMAT_MACROS 1 185 #endif 186 187 #include "hb.h" 188 #define HB_H_IN 189 #include "hb-ot.h" 190 #define HB_OT_H_IN 191 #include "hb-aat.h" 192 #define HB_AAT_H_IN 193 194 #include <cassert> 195 #include <cfloat> 196 #include <climits> 197 #if defined(_MSC_VER) && !defined(_USE_MATH_DEFINES) 198 # define _USE_MATH_DEFINES 199 #endif 200 #include <cmath> 201 #include <cstdarg> 202 #include <cstddef> 203 #include <cstdio> 204 #include <cstdlib> 205 #include <cstring> 206 207 #if (defined(_MSC_VER) && _MSC_VER >= 1500) || defined(__MINGW32__) 208 #ifdef __MINGW32_VERSION 209 #ifndef WIN32_LEAN_AND_MEAN 210 #define WIN32_LEAN_AND_MEAN 1 211 #endif 212 #else 213 #include <intrin.h> 214 #endif 215 #endif 216 217 #ifdef _WIN32 218 #include <windows.h> 219 #include <winapifamily.h> 220 #endif 221 222 #ifndef PRId32 223 # define PRId32 "d" 224 # define PRIu32 "u" 225 # define PRIx32 "x" 226 #endif 227 228 #define HB_PASTE1(a,b) a##b 229 #define HB_PASTE(a,b) HB_PASTE1(a,b) 230 231 232 /* Compile-time custom allocator support. */ 233 234 #if !defined(HB_CUSTOM_MALLOC) \ 235 && defined(hb_malloc_impl) \ 236 && defined(hb_calloc_impl) \ 237 && defined(hb_realloc_impl) \ 238 && defined(hb_free_impl) 239 #define HB_CUSTOM_MALLOC 240 #endif 241 242 #ifdef HB_CUSTOM_MALLOC 243 extern "C" void* hb_malloc_impl(size_t size); 244 extern "C" void* hb_calloc_impl(size_t nmemb, size_t size); 245 extern "C" void* hb_realloc_impl(void *ptr, size_t size); 246 extern "C" void hb_free_impl(void *ptr); 247 #define hb_malloc hb_malloc_impl 248 #define hb_calloc hb_calloc_impl 249 #define hb_realloc hb_realloc_impl 250 #define hb_free hb_free_impl 251 #else 252 #define hb_malloc malloc 253 #define hb_calloc calloc 254 #define hb_realloc realloc 255 #define hb_free free 256 #endif 257 258 259 /* 260 * Compiler attributes 261 */ 262 263 // gcc 10 has __has_builtin but not earlier versions. Sanction any gcc >= 5 264 // clang defines it so no need. 265 #ifdef __has_builtin 266 #define hb_has_builtin __has_builtin 267 #else 268 #define hb_has_builtin(x) ((defined(__GNUC__) && __GNUC__ >= 5)) 269 #endif 270 271 #if defined(__OPTIMIZE__) && hb_has_builtin(__builtin_expect) 272 #define likely(expr) __builtin_expect (bool(expr), 1) 273 #define unlikely(expr) __builtin_expect (bool(expr), 0) 274 #else 275 #define likely(expr) (expr) 276 #define unlikely(expr) (expr) 277 #endif 278 279 #if !defined(__GNUC__) && !defined(__clang__) 280 #undef __attribute__ 281 #define __attribute__(x) 282 #endif 283 284 #if defined(__GNUC__) && (__GNUC__ >= 3) 285 #define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx))) 286 #else 287 #define HB_PRINTF_FUNC(format_idx, arg_idx) 288 #endif 289 #if defined(__GNUC__) && (__GNUC__ >= 4) || (__clang__) 290 #define HB_UNUSED __attribute__((unused)) 291 #elif defined(_MSC_VER) /* https://github.com/harfbuzz/harfbuzz/issues/635 */ 292 #define HB_UNUSED __pragma(warning(suppress: 4100 4101)) 293 #else 294 #define HB_UNUSED 295 #endif 296 297 #ifndef HB_INTERNAL 298 # if !defined(HB_NO_VISIBILITY) && !defined(__MINGW32__) && !defined(__CYGWIN__) && !defined(_MSC_VER) && !defined(__SUNPRO_CC) 299 # define HB_INTERNAL __attribute__((__visibility__("hidden"))) 300 # elif defined(__MINGW32__) 301 /* We use -export-symbols on mingw32, since it does not support visibility attributes. */ 302 # define HB_INTERNAL 303 # elif defined (_MSC_VER) && defined (HB_DLL_EXPORT) 304 /* We do not try to export internal symbols on Visual Studio */ 305 # define HB_INTERNAL 306 #else 307 # define HB_INTERNAL 308 # define HB_NO_VISIBILITY 1 309 # endif 310 #endif 311 312 /* https://github.com/harfbuzz/harfbuzz/issues/1651 */ 313 #if defined(__clang__) && __clang_major__ < 10 314 #define static_const static 315 #else 316 #define static_const static const 317 #endif 318 319 #if defined(__GNUC__) && (__GNUC__ >= 3) 320 #define HB_FUNC __PRETTY_FUNCTION__ 321 #elif defined(_MSC_VER) 322 #define HB_FUNC __FUNCSIG__ 323 #else 324 #define HB_FUNC __func__ 325 #endif 326 327 #if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140) 328 /* https://github.com/harfbuzz/harfbuzz/issues/630 */ 329 #define __restrict 330 #endif 331 332 #ifndef HB_ALWAYS_INLINE 333 #if defined(_MSC_VER) 334 #define HB_ALWAYS_INLINE __forceinline 335 #else 336 #define HB_ALWAYS_INLINE __attribute__((always_inline)) inline 337 #endif 338 #endif 339 340 /* 341 * Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411 342 * HB_FALLTHROUGH is an annotation to suppress compiler warnings about switch 343 * cases that fall through without a break or return statement. HB_FALLTHROUGH 344 * is only needed on cases that have code: 345 * 346 * switch (foo) { 347 * case 1: // These cases have no code. No fallthrough annotations are needed. 348 * case 2: 349 * case 3: 350 * foo = 4; // This case has code, so a fallthrough annotation is needed: 351 * HB_FALLTHROUGH; 352 * default: 353 * return foo; 354 * } 355 */ 356 #if defined(__clang__) && __cplusplus >= 201103L 357 /* clang's fallthrough annotations are only available starting in C++11. */ 358 # define HB_FALLTHROUGH [[clang::fallthrough]] 359 #elif defined(__GNUC__) && (__GNUC__ >= 7) 360 /* GNU fallthrough attribute is available from GCC7 */ 361 # define HB_FALLTHROUGH __attribute__((fallthrough)) 362 #elif defined(_MSC_VER) 363 /* 364 * MSVC's __fallthrough annotations are checked by /analyze (Code Analysis): 365 * https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx 366 */ 367 # include <sal.h> 368 # define HB_FALLTHROUGH __fallthrough 369 #else 370 # define HB_FALLTHROUGH /* FALLTHROUGH */ 371 #endif 372 373 /* A tag to enforce use of return value for a function */ 374 #if __cplusplus >= 201703L 375 # define HB_NODISCARD [[nodiscard]] 376 #elif defined(__GNUC__) || defined(__clang__) 377 # define HB_NODISCARD __attribute__((warn_unused_result)) 378 #elif defined(_MSC_VER) 379 # define HB_NODISCARD _Check_return_ 380 #else 381 # define HB_NODISCARD 382 #endif 383 384 /* https://github.com/harfbuzz/harfbuzz/issues/1852 */ 385 #if defined(__clang__) && !(defined(_AIX) && (defined(__IBMCPP__) || defined(__ibmxl__))) 386 /* Disable certain sanitizer errors. */ 387 /* https://github.com/harfbuzz/harfbuzz/issues/1247 */ 388 #define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW __attribute__((no_sanitize("signed-integer-overflow"))) 389 #else 390 #define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW 391 #endif 392 393 394 #ifdef _WIN32 395 /* We need Windows Vista for both Uniscribe backend and for 396 * MemoryBarrier. We don't support compiling on Windows XP, 397 * though we run on it fine. */ 398 # if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600 399 # undef _WIN32_WINNT 400 # endif 401 # ifndef _WIN32_WINNT 402 # if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) 403 # define _WIN32_WINNT 0x0600 404 # endif 405 # endif 406 # ifndef WIN32_LEAN_AND_MEAN 407 # define WIN32_LEAN_AND_MEAN 1 408 # endif 409 # ifndef STRICT 410 # define STRICT 1 411 # endif 412 413 # if defined(_WIN32_WCE) 414 /* Some things not defined on Windows CE. */ 415 # define vsnprintf _vsnprintf 416 # ifndef HB_NO_GETENV 417 # define HB_NO_GETENV 418 # endif 419 # if _WIN32_WCE < 0x800 420 # define HB_NO_SETLOCALE 421 # define HB_NO_ERRNO 422 # endif 423 # elif !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) 424 # ifndef HB_NO_GETENV 425 # define HB_NO_GETENV 426 # endif 427 # endif 428 # if defined(_MSC_VER) && _MSC_VER < 1900 429 # define snprintf _snprintf 430 # endif 431 #endif 432 433 #ifdef HB_NO_GETENV 434 #define getenv(Name) nullptr 435 #endif 436 437 #ifndef HB_NO_ERRNO 438 # include <cerrno> 439 #else 440 static int HB_UNUSED _hb_errno = 0; 441 # undef errno 442 # define errno _hb_errno 443 #endif 444 445 #define HB_STMT_START do 446 #define HB_STMT_END while (0) 447 448 #if defined(HAVE_ATEXIT) && !defined(HB_USE_ATEXIT) 449 /* atexit() is only safe to be called from shared libraries on certain 450 * platforms. Whitelist. 451 * https://bugs.freedesktop.org/show_bug.cgi?id=82246 */ 452 # if defined(__linux) && defined(__GLIBC_PREREQ) 453 # if __GLIBC_PREREQ(2,3) 454 /* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */ 455 # define HB_USE_ATEXIT 1 456 # endif 457 # elif defined(_MSC_VER) || defined(__MINGW32__) 458 /* For MSVC: 459 * https://msdn.microsoft.com/en-us/library/tze57ck3.aspx 460 * https://msdn.microsoft.com/en-us/library/zk17ww08.aspx 461 * mingw32 headers say atexit is safe to use in shared libraries. 462 */ 463 # define HB_USE_ATEXIT 1 464 # elif defined(__ANDROID__) 465 /* This is available since Android NKD r8 or r8b: 466 * https://issuetracker.google.com/code/p/android/issues/detail?id=6455 467 */ 468 # define HB_USE_ATEXIT 1 469 # elif defined(__APPLE__) 470 /* For macOS and related platforms, the atexit man page indicates 471 * that it will be invoked when the library is unloaded, not only 472 * at application exit. 473 */ 474 # define HB_USE_ATEXIT 1 475 # endif 476 #endif /* defined(HAVE_ATEXIT) && !defined(HB_USE_ATEXIT) */ 477 #ifdef HB_NO_ATEXIT 478 # undef HB_USE_ATEXIT 479 #endif 480 #ifndef HB_USE_ATEXIT 481 # define HB_USE_ATEXIT 0 482 #endif 483 #ifndef hb_atexit 484 #if !HB_USE_ATEXIT 485 # define hb_atexit(_) HB_STMT_START { if (0) (_) (); } HB_STMT_END 486 #else /* HB_USE_ATEXIT */ 487 # ifdef HAVE_ATEXIT 488 # define hb_atexit atexit 489 # else ~hb_atexit_thb_atexit_t490 template <void (*function) (void)> struct hb_atexit_t { ~hb_atexit_t () { function (); } }; 491 # define hb_atexit(f) static hb_atexit_t<f> _hb_atexit_##__LINE__; 492 # endif 493 #endif 494 #endif 495 496 497 // Locale business 498 499 #if !defined(HB_NO_SETLOCALE) && (!defined(HAVE_NEWLOCALE) || !defined(HAVE_USELOCALE)) 500 #define HB_NO_SETLOCALE 1 501 #endif 502 503 #ifndef HB_NO_SETLOCALE 504 505 #include <locale.h> 506 #ifdef HAVE_XLOCALE_H 507 #include <xlocale.h> // Needed on BSD/OS X for uselocale 508 #endif 509 510 #ifdef WIN32 511 #define hb_locale_t _locale_t 512 #else 513 #define hb_locale_t locale_t 514 #endif 515 #define hb_setlocale setlocale 516 #define hb_uselocale uselocale 517 518 #else 519 520 #define hb_locale_t void * 521 #define hb_setlocale(Category, Locale) "C" 522 #define hb_uselocale(Locale) ((hb_locale_t) 0) 523 524 #endif 525 526 527 /* Lets assert int types. Saves trouble down the road. */ 528 static_assert ((sizeof (hb_codepoint_t) == 4), ""); 529 static_assert ((sizeof (hb_position_t) == 4), ""); 530 static_assert ((sizeof (hb_mask_t) == 4), ""); 531 static_assert ((sizeof (hb_var_int_t) == 4), ""); 532 533 534 /* Pie time. */ 535 // https://github.com/harfbuzz/harfbuzz/issues/4166 536 #define HB_PI 3.14159265358979f 537 #define HB_2_PI (2.f * HB_PI) 538 539 540 /* Headers we include for everyone. Keep topologically sorted by dependency. 541 * They express dependency amongst themselves, but no other file should include 542 * them directly.*/ 543 #include "hb-cplusplus.hh" 544 #include "hb-meta.hh" 545 #include "hb-mutex.hh" 546 #include "hb-number.hh" 547 #include "hb-atomic.hh" // Requires: hb-meta 548 #include "hb-null.hh" // Requires: hb-meta 549 #include "hb-algs.hh" // Requires: hb-meta hb-null hb-number 550 #include "hb-iter.hh" // Requires: hb-algs hb-meta 551 #include "hb-debug.hh" // Requires: hb-algs hb-atomic 552 #include "hb-array.hh" // Requires: hb-algs hb-iter hb-null 553 #include "hb-vector.hh" // Requires: hb-array hb-null 554 #include "hb-object.hh" // Requires: hb-atomic hb-mutex hb-vector 555 556 #endif /* HB_HH */ 557