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
33#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC
34#ifdef _MSC_VER
35#pragma warning( disable: 4068 ) /* Unknown pragma */
36#endif
37#if defined(__GNUC__) || defined(__clang__)
38/* Rules:
39 *
40 * - All pragmas are declared GCC even if they are clang ones. Otherwise GCC
41 * nags, even though we instruct it to ignore -Wunknown-pragmas. ¯\_(ツ)_/¯
42 *
43 * - Within each category, keep sorted.
44 *
45 * - Warnings whose scope can be expanded in future compiler versions shall
46 * be declared as "warning". Otherwise, either ignored or error.
47 */
48
49/* Setup. Don't sort order within this category. */
50#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
51#pragma GCC diagnostic warning "-Wall"
52#pragma GCC diagnostic warning "-Wextra"
53#endif
54#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
55#pragma GCC diagnostic ignored "-Wpragmas"
56#pragma GCC diagnostic ignored "-Wunknown-pragmas"
57#pragma GCC diagnostic ignored "-Wunknown-warning-option"
58#endif
59#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
60//#pragma GCC diagnostic warning "-Weverything"
61#endif
62
63/* Error. Should never happen. */
64#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_ERROR
65#pragma GCC diagnostic error "-Wc++11-narrowing"
66#pragma GCC diagnostic error "-Wcast-align"
67#pragma GCC diagnostic error "-Wcast-function-type"
68#pragma GCC diagnostic error "-Wdelete-non-virtual-dtor"
69#pragma GCC diagnostic error "-Wembedded-directive"
70#pragma GCC diagnostic error "-Wextra-semi-stmt"
71#pragma GCC diagnostic error "-Wformat-security"
72#pragma GCC diagnostic error "-Wimplicit-function-declaration"
73#pragma GCC diagnostic error "-Winit-self"
74#pragma GCC diagnostic error "-Winjected-class-name"
75#pragma GCC diagnostic error "-Wmissing-braces"
76#pragma GCC diagnostic error "-Wmissing-declarations"
77#pragma GCC diagnostic error "-Wmissing-prototypes"
78#pragma GCC diagnostic error "-Wnested-externs"
79#pragma GCC diagnostic error "-Wold-style-definition"
80#pragma GCC diagnostic error "-Wpointer-arith"
81#pragma GCC diagnostic error "-Wredundant-decls"
82#pragma GCC diagnostic error "-Wreorder"
83#pragma GCC diagnostic error "-Wsign-compare"
84#pragma GCC diagnostic error "-Wstrict-prototypes"
85#pragma GCC diagnostic error "-Wstring-conversion"
86#pragma GCC diagnostic error "-Wswitch-enum"
87#pragma GCC diagnostic error "-Wtautological-overlap-compare"
88#pragma GCC diagnostic error "-Wunneeded-internal-declaration"
89#pragma GCC diagnostic error "-Wunused"
90#pragma GCC diagnostic error "-Wunused-local-typedefs"
91#pragma GCC diagnostic error "-Wunused-value"
92#pragma GCC diagnostic error "-Wunused-variable"
93#pragma GCC diagnostic error "-Wvla"
94#pragma GCC diagnostic error "-Wwrite-strings"
95#endif
96
97/* Warning. To be investigated if happens. */
98#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
99#pragma GCC diagnostic warning "-Wbuiltin-macro-redefined"
100#pragma GCC diagnostic warning "-Wdeprecated"
101#pragma GCC diagnostic warning "-Wdeprecated-declarations"
102#pragma GCC diagnostic warning "-Wdisabled-optimization"
103#pragma GCC diagnostic warning "-Wdouble-promotion"
104#pragma GCC diagnostic warning "-Wformat=2"
105#pragma GCC diagnostic warning "-Wignored-pragma-optimize"
106#pragma GCC diagnostic warning "-Wlogical-op"
107#pragma GCC diagnostic warning "-Wmaybe-uninitialized"
108#pragma GCC diagnostic warning "-Wmissing-format-attribute"
109#pragma GCC diagnostic warning "-Wundef"
110#endif
111
112/* Ignored currently, but should be fixed at some point. */
113#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
114#pragma GCC diagnostic ignored "-Wconversion" // TODO fix
115#pragma GCC diagnostic ignored "-Wformat-signedness" // TODO fix
116#pragma GCC diagnostic ignored "-Wshadow" // TODO fix
117#pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations" // TODO fix
118#pragma GCC diagnostic ignored "-Wunused-parameter" // TODO fix
119#endif
120
121/* Ignored intentionally. */
122#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
123#pragma GCC diagnostic ignored "-Wclass-memaccess"
124#pragma GCC diagnostic ignored "-Wformat-nonliteral"
125#pragma GCC diagnostic ignored "-Wformat-zero-length"
126#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
127#pragma GCC diagnostic ignored "-Wpacked" // Erratic impl in clang
128#pragma GCC diagnostic ignored "-Wstrict-aliasing"
129#pragma GCC diagnostic ignored "-Wtype-limits"
130#pragma GCC diagnostic ignored "-Wc++11-compat" // only gcc raises it
131#endif
132
133#endif
134#endif
135
136
137#include "hb-config.hh"
138
139
140/*
141 * Following added based on what AC_USE_SYSTEM_EXTENSIONS adds to
142 * config.h.in. Copied here for the convenience of those embedding
143 * HarfBuzz and not using our build system.
144 */
145/* Enable extensions on AIX 3, Interix. */
146#ifndef _ALL_SOURCE
147# define _ALL_SOURCE 1
148#endif
149/* Enable GNU extensions on systems that have them. */
150#ifndef _GNU_SOURCE
151# define _GNU_SOURCE 1
152#endif
153/* Enable threading extensions on Solaris. */
154#ifndef _POSIX_PTHREAD_SEMANTICS
155# define _POSIX_PTHREAD_SEMANTICS 1
156#endif
157/* Enable extensions on HP NonStop. */
158#ifndef _TANDEM_SOURCE
159# define _TANDEM_SOURCE 1
160#endif
161/* Enable general extensions on Solaris. */
162#ifndef __EXTENSIONS__
163# define __EXTENSIONS__ 1
164#endif
165
166#if defined (_MSC_VER) && defined (HB_DLL_EXPORT)
167#define HB_EXTERN __declspec (dllexport) extern
168#endif
169
170#include "hb.h"
171#define HB_H_IN
172#include "hb-ot.h"
173#define HB_OT_H_IN
174#include "hb-aat.h"
175#define HB_AAT_H_IN
176
177#include <limits.h>
178#include <math.h>
179#include <stdlib.h>
180#include <stddef.h>
181#include <string.h>
182#include <assert.h>
183#include <stdio.h>
184#include <stdarg.h>
185
186#if (defined(_MSC_VER) && _MSC_VER >= 1500) || defined(__MINGW32__)
187#ifdef __MINGW32_VERSION
188#ifndef WIN32_LEAN_AND_MEAN
189#define WIN32_LEAN_AND_MEAN 1
190#endif
191#include <windows.h>
192#else
193#include <intrin.h>
194#endif
195#endif
196
197#define HB_PASTE1(a,b) a##b
198#define HB_PASTE(a,b) HB_PASTE1(a,b)
199
200
201/* Compile-time custom allocator support. */
202
203#if defined(hb_malloc_impl) \
204 && defined(hb_calloc_impl) \
205 && defined(hb_realloc_impl) \
206 && defined(hb_free_impl)
207extern "C" void* hb_malloc_impl(size_t size);
208extern "C" void* hb_calloc_impl(size_t nmemb, size_t size);
209extern "C" void* hb_realloc_impl(void *ptr, size_t size);
210extern "C" void hb_free_impl(void *ptr);
211#define malloc hb_malloc_impl
212#define calloc hb_calloc_impl
213#define realloc hb_realloc_impl
214#define free hb_free_impl
215#endif
216
217
218/*
219 * Compiler attributes
220 */
221
222#if (defined(__GNUC__) || defined(__clang__)) && defined(__OPTIMIZE__)
223#define likely(expr) (__builtin_expect (!!(expr), 1))
224#define unlikely(expr) (__builtin_expect (!!(expr), 0))
225#else
226#define likely(expr) (expr)
227#define unlikely(expr) (expr)
228#endif
229
230#if !defined(__GNUC__) && !defined(__clang__)
231#undef __attribute__
232#define __attribute__(x)
233#endif
234
235#if defined(__GNUC__) && (__GNUC__ >= 3)
236#define HB_PURE_FUNC __attribute__((pure))
237#define HB_CONST_FUNC __attribute__((const))
238#define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx)))
239#else
240#define HB_PURE_FUNC
241#define HB_CONST_FUNC
242#define HB_PRINTF_FUNC(format_idx, arg_idx)
243#endif
244#if defined(__GNUC__) && (__GNUC__ >= 4) || (__clang__)
245#define HB_UNUSED __attribute__((unused))
246#elif defined(_MSC_VER) /* https://github.com/harfbuzz/harfbuzz/issues/635 */
247#define HB_UNUSED __pragma(warning(suppress: 4100 4101))
248#else
249#define HB_UNUSED
250#endif
251
252#ifndef HB_INTERNAL
253# if !defined(HB_NO_VISIBILITY) && !defined(__MINGW32__) && !defined(__CYGWIN__) && !defined(_MSC_VER) && !defined(__SUNPRO_CC)
254# define HB_INTERNAL __attribute__((__visibility__("hidden")))
255# elif defined(__MINGW32__)
256 /* We use -export-symbols on mingw32, since it does not support visibility attributes. */
257# define HB_INTERNAL
258# elif defined (_MSC_VER) && defined (HB_DLL_EXPORT)
259 /* We do not try to export internal symbols on Visual Studio */
260# define HB_INTERNAL
261#else
262# define HB_INTERNAL
263# define HB_NO_VISIBILITY 1
264# endif
265#endif
266
267/* https://github.com/harfbuzz/harfbuzz/issues/1651 */
268#if defined(__clang__) && __clang_major__ < 10
269#define static_const static
270#else
271#define static_const static const
272#endif
273
274#if defined(__GNUC__) && (__GNUC__ >= 3)
275#define HB_FUNC __PRETTY_FUNCTION__
276#elif defined(_MSC_VER)
277#define HB_FUNC __FUNCSIG__
278#else
279#define HB_FUNC __func__
280#endif
281
282#if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)
283/* https://github.com/harfbuzz/harfbuzz/issues/630 */
284#define __restrict
285#endif
286
287/*
288 * Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411
289 * HB_FALLTHROUGH is an annotation to suppress compiler warnings about switch
290 * cases that fall through without a break or return statement. HB_FALLTHROUGH
291 * is only needed on cases that have code:
292 *
293 * switch (foo) {
294 * case 1: // These cases have no code. No fallthrough annotations are needed.
295 * case 2:
296 * case 3:
297 * foo = 4; // This case has code, so a fallthrough annotation is needed:
298 * HB_FALLTHROUGH;
299 * default:
300 * return foo;
301 * }
302 */
303#if defined(__clang__) && __cplusplus >= 201103L
304 /* clang's fallthrough annotations are only available starting in C++11. */
305# define HB_FALLTHROUGH [[clang::fallthrough]]
306#elif defined(__GNUC__) && (__GNUC__ >= 7)
307 /* GNU fallthrough attribute is available from GCC7 */
308# define HB_FALLTHROUGH __attribute__((fallthrough))
309#elif defined(_MSC_VER)
310 /*
311 * MSVC's __fallthrough annotations are checked by /analyze (Code Analysis):
312 * https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx
313 */
314# include <sal.h>
315# define HB_FALLTHROUGH __fallthrough
316#else
317# define HB_FALLTHROUGH /* FALLTHROUGH */
318#endif
319
320/* https://github.com/harfbuzz/harfbuzz/issues/1852 */
321#if defined(__clang__) && !(defined(_AIX) && (defined(__IBMCPP__) || defined(__ibmxl__)))
322/* Disable certain sanitizer errors. */
323/* https://github.com/harfbuzz/harfbuzz/issues/1247 */
324#define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW __attribute__((no_sanitize("signed-integer-overflow")))
325#else
326#define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW
327#endif
328
329
330#ifdef _WIN32
331 /* We need Windows Vista for both Uniscribe backend and for
332 * MemoryBarrier. We don't support compiling on Windows XP,
333 * though we run on it fine. */
334# if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600
335# undef _WIN32_WINNT
336# endif
337# ifndef _WIN32_WINNT
338# if !defined(WINAPI_FAMILY) || !(WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
339# define _WIN32_WINNT 0x0600
340# endif
341# endif
342# ifndef WIN32_LEAN_AND_MEAN
343# define WIN32_LEAN_AND_MEAN 1
344# endif
345# ifndef STRICT
346# define STRICT 1
347# endif
348
349# if defined(_WIN32_WCE)
350 /* Some things not defined on Windows CE. */
351# define vsnprintf _vsnprintf
352# ifndef HB_NO_GETENV
353# define HB_NO_GETENV
354# endif
355# if _WIN32_WCE < 0x800
356# define HB_NO_SETLOCALE
357# define HB_NO_ERRNO
358# endif
359# elif defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
360# ifndef HB_NO_GETENV
361# define HB_NO_GETENV
362# endif
363# endif
364# if defined(_MSC_VER) && _MSC_VER < 1900
365# define snprintf _snprintf
366# endif
367#endif
368
369#ifdef HB_NO_GETENV
370#define getenv(Name) nullptr
371#endif
372
373#ifndef HB_NO_ERRNO
374# include <errno.h>
375#else
376static int HB_UNUSED _hb_errno = 0;
377# undef errno
378# define errno _hb_errno
379#endif
380
381#if defined(HAVE_ATEXIT) && !defined(HB_USE_ATEXIT)
382/* atexit() is only safe to be called from shared libraries on certain
383 * platforms. Whitelist.
384 * https://bugs.freedesktop.org/show_bug.cgi?id=82246 */
385# if defined(__linux) && defined(__GLIBC_PREREQ)
386# if __GLIBC_PREREQ(2,3)
387/* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */
388# define HB_USE_ATEXIT 1
389# endif
390# elif defined(_MSC_VER) || defined(__MINGW32__)
391/* For MSVC:
392 * https://msdn.microsoft.com/en-us/library/tze57ck3.aspx
393 * https://msdn.microsoft.com/en-us/library/zk17ww08.aspx
394 * mingw32 headers say atexit is safe to use in shared libraries.
395 */
396# define HB_USE_ATEXIT 1
397# elif defined(__ANDROID__)
398/* This is available since Android NKD r8 or r8b:
399 * https://issuetracker.google.com/code/p/android/issues/detail?id=6455
400 */
401# define HB_USE_ATEXIT 1
402# elif defined(__APPLE__)
403/* For macOS and related platforms, the atexit man page indicates
404 * that it will be invoked when the library is unloaded, not only
405 * at application exit.
406 */
407# define HB_USE_ATEXIT 1
408# endif
409#endif
410#ifdef HB_NO_ATEXIT
411# undef HB_USE_ATEXIT
412#endif
413#ifndef HB_USE_ATEXIT
414# define HB_USE_ATEXIT 0
415#endif
416
417#define HB_STMT_START do
418#define HB_STMT_END while (0)
419
420/* Static-assert as expression. */
421template <unsigned int cond> class hb_assert_constant_t;
422template <> class hb_assert_constant_t<1> {};
423#define ASSERT_STATIC_EXPR_ZERO(_cond) (0 * (unsigned int) sizeof (hb_assert_constant_t<_cond>))
424
425/* Lets assert int types. Saves trouble down the road. */
426static_assert ((sizeof (int8_t) == 1), "");
427static_assert ((sizeof (uint8_t) == 1), "");
428static_assert ((sizeof (int16_t) == 2), "");
429static_assert ((sizeof (uint16_t) == 2), "");
430static_assert ((sizeof (int32_t) == 4), "");
431static_assert ((sizeof (uint32_t) == 4), "");
432static_assert ((sizeof (int64_t) == 8), "");
433static_assert ((sizeof (uint64_t) == 8), "");
434static_assert ((sizeof (hb_codepoint_t) == 4), "");
435static_assert ((sizeof (hb_position_t) == 4), "");
436static_assert ((sizeof (hb_mask_t) == 4), "");
437static_assert ((sizeof (hb_var_int_t) == 4), "");
438
439#define HB_DELETE_COPY_ASSIGN(TypeName) \
440 TypeName(const TypeName&) = delete; \
441 void operator=(const TypeName&) = delete
442#define HB_DELETE_CREATE_COPY_ASSIGN(TypeName) \
443 TypeName() = delete; \
444 TypeName(const TypeName&) = delete; \
445 void operator=(const TypeName&) = delete
446
447
448/* Flags */
449
450/* Enable bitwise ops on enums marked as flags_t */
451/* To my surprise, looks like the function resolver is happy to silently cast
452 * one enum to another... So this doesn't provide the type-checking that I
453 * originally had in mind... :(.
454 *
455 * For MSVC warnings, see: https://github.com/harfbuzz/harfbuzz/pull/163
456 */
457#ifdef _MSC_VER
458# pragma warning(disable:4200)
459# pragma warning(disable:4800)
460#endif
461#define HB_MARK_AS_FLAG_T(T) \
462 extern "C++" { \
463 static inline T operator | (T l, T r) { return T ((unsigned) l | (unsigned) r); } \
464 static inline T operator & (T l, T r) { return T ((unsigned) l & (unsigned) r); } \
465 static inline T operator ^ (T l, T r) { return T ((unsigned) l ^ (unsigned) r); } \
466 static inline T operator ~ (T r) { return T (~(unsigned int) r); } \
467 static inline T& operator |= (T &l, T r) { l = l | r; return l; } \
468 static inline T& operator &= (T& l, T r) { l = l & r; return l; } \
469 static inline T& operator ^= (T& l, T r) { l = l ^ r; return l; } \
470 } \
471 static_assert (true, "")
472
473/* Useful for set-operations on small enums.
474 * For example, for testing "x ∈ {x1, x2, x3}" use:
475 * (FLAG_UNSAFE(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
476 */
477#define FLAG(x) (ASSERT_STATIC_EXPR_ZERO ((unsigned)(x) < 32) + (((uint32_t) 1U) << (unsigned)(x)))
478#define FLAG_UNSAFE(x) ((unsigned)(x) < 32 ? (((uint32_t) 1U) << (unsigned)(x)) : 0)
479#define FLAG_RANGE(x,y) (ASSERT_STATIC_EXPR_ZERO ((x) < (y)) + FLAG(y+1) - FLAG(x))
480#define FLAG64(x) (ASSERT_STATIC_EXPR_ZERO ((unsigned)(x) < 64) + (((uint64_t) 1ULL) << (unsigned)(x)))
481#define FLAG64_UNSAFE(x) ((unsigned)(x) < 64 ? (((uint64_t) 1ULL) << (unsigned)(x)) : 0)
482
483
484/* Size signifying variable-sized array */
485#ifndef HB_VAR_ARRAY
486#define HB_VAR_ARRAY 1
487#endif
488
489static inline double
490_hb_roundf (float x)
491{
492 return x >= 0 ? floor ((double) x + .5) : ceil ((double) x - .5);
493}
494#ifndef HAVE_ROUNDF
495#define roundf(x) _hb_roundf(x)
496#endif
497
498/* Endian swap, used in Windows related backends */
499static inline uint16_t hb_uint16_swap (const uint16_t v)
500{ return (v >> 8) | (v << 8); }
501static inline uint32_t hb_uint32_swap (const uint32_t v)
502{ return (hb_uint16_swap (v) << 16) | hb_uint16_swap (v >> 16); }
503
504/*
505 * Big-endian integers. Here because fundamental.
506 */
507
508template <typename Type, int Bytes> struct BEInt;
509
510template <typename Type>
511struct BEInt<Type, 1>
512{
513 public:
514 BEInt<Type, 1>& operator = (Type V)
515 {
516 v = V;
517 return *this;
518 }
519 operator Type () const { return v; }
520 private: uint8_t v;
521};
522template <typename Type>
523struct BEInt<Type, 2>
524{
525 public:
526 BEInt<Type, 2>& operator = (Type V)
527 {
528 v[0] = (V >> 8) & 0xFF;
529 v[1] = (V ) & 0xFF;
530 return *this;
531 }
532 operator Type () const
533 {
534#if ((defined(__GNUC__) && __GNUC__ >= 5) || defined(__clang__)) && \
535 defined(__BYTE_ORDER) && \
536 (__BYTE_ORDER == __LITTLE_ENDIAN || __BYTE_ORDER == __BIG_ENDIAN)
537 /* Spoon-feed the compiler a big-endian integer with alignment 1.
538 * https://github.com/harfbuzz/harfbuzz/pull/1398 */
539 struct __attribute__((packed)) packed_uint16_t { uint16_t v; };
540#if __BYTE_ORDER == __LITTLE_ENDIAN
541 return __builtin_bswap16 (((packed_uint16_t *) this)->v);
542#else /* __BYTE_ORDER == __BIG_ENDIAN */
543 return ((packed_uint16_t *) this)->v;
544#endif
545#endif
546 return (v[0] << 8)
547 + (v[1] );
548 }
549 private: uint8_t v[2];
550};
551template <typename Type>
552struct BEInt<Type, 3>
553{
554 public:
555 BEInt<Type, 3>& operator = (Type V)
556 {
557 v[0] = (V >> 16) & 0xFF;
558 v[1] = (V >> 8) & 0xFF;
559 v[2] = (V ) & 0xFF;
560 return *this;
561 }
562 operator Type () const
563 {
564 return (v[0] << 16)
565 + (v[1] << 8)
566 + (v[2] );
567 }
568 private: uint8_t v[3];
569};
570template <typename Type>
571struct BEInt<Type, 4>
572{
573 public:
574 BEInt<Type, 4>& operator = (Type V)
575 {
576 v[0] = (V >> 24) & 0xFF;
577 v[1] = (V >> 16) & 0xFF;
578 v[2] = (V >> 8) & 0xFF;
579 v[3] = (V ) & 0xFF;
580 return *this;
581 }
582 operator Type () const
583 {
584 return (v[0] << 24)
585 + (v[1] << 16)
586 + (v[2] << 8)
587 + (v[3] );
588 }
589 private: uint8_t v[4];
590};
591
592
593/*
594 * For lack of a better place, put Zawgyi script hack here.
595 * https://github.com/harfbuzz/harfbuzz/issues/1162
596 */
597
598#define HB_SCRIPT_MYANMAR_ZAWGYI ((hb_script_t) HB_TAG ('Q','a','a','g'))
599
600
601/* Headers we include for everyone. Keep topologically sorted by dependency.
602 * They express dependency amongst themselves, but no other file should include
603 * them directly.*/
604#include "hb-meta.hh"
605#include "hb-mutex.hh"
606#include "hb-number.hh"
607#include "hb-atomic.hh" // Requires: hb-meta
608#include "hb-null.hh" // Requires: hb-meta
609#include "hb-algs.hh" // Requires: hb-meta hb-null hb-number
610#include "hb-iter.hh" // Requires: hb-algs hb-meta
611#include "hb-debug.hh" // Requires: hb-algs hb-atomic
612#include "hb-array.hh" // Requires: hb-algs hb-iter hb-null
613#include "hb-vector.hh" // Requires: hb-array hb-null
614#include "hb-object.hh" // Requires: hb-atomic hb-mutex hb-vector
615
616#endif /* HB_HH */
617