2 * Copyright © 2007,2008,2009 Red Hat, Inc.
3 * Copyright © 2011,2012 Google, Inc.
5 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
25 * Red Hat Author(s): Behdad Esfahbod
26 * Google Author(s): Behdad Esfahbod
48 /* We only use these two for debug output. However, the debug code is
49 * always seen by the compiler (and optimized out in non-debug builds.
50 * If including these becomes a problem, we can start thinking about
51 * someway around that. */
57 /* Compiler attributes */
60 #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
61 #define _HB_BOOLEAN_EXPR(expr) ((expr) ? 1 : 0)
62 #define likely(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 1))
63 #define unlikely(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 0))
65 #define likely(expr) (expr)
66 #define unlikely(expr) (expr)
71 #define __attribute__(x)
75 #define HB_PURE_FUNC __attribute__((pure))
76 #define HB_CONST_FUNC __attribute__((const))
77 #define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx)))
81 #define HB_PRINTF_FUNC(format_idx, arg_idx)
84 #define HB_UNUSED __attribute__((unused))
90 # if !defined(__MINGW32__) && !defined(__CYGWIN__)
91 # define HB_INTERNAL __attribute__((__visibility__("hidden")))
98 #define HB_FUNC __PRETTY_FUNCTION__
99 #elif defined(_MSC_VER)
100 #define HB_FUNC __FUNCSIG__
102 #define HB_FUNC __func__
105 #if defined(_WIN32) || defined(__CYGWIN__)
106 /* We need Windows Vista for both Uniscribe backend and for
107 * MemoryBarrier. We don't support compiling on Windows XP,
108 * though we run on it fine. */
109 # if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600
112 # ifndef _WIN32_WINNT
113 # define _WIN32_WINNT 0x0600
115 # ifndef WIN32_LEAN_AND_MEAN
116 # define WIN32_LEAN_AND_MEAN 1
122 # if defined(_WIN32_WCE)
123 /* Some things not defined on Windows CE. */
124 # define strdup _strdup
125 # define getenv(Name) NULL
126 # define setlocale(Category, Locale) "C"
127 static int errno = 0; /* Use something better? */
128 # elif defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
129 # define getenv(Name) NULL
131 # if defined(_MSC_VER) && _MSC_VER < 1900
132 # define snprintf _snprintf
137 /* atexit() is only safe to be called from shared libraries on certain
138 * platforms. Whitelist.
139 * https://bugs.freedesktop.org/show_bug.cgi?id=82246 */
140 # if defined(__linux) && defined(__GLIBC_PREREQ)
141 # if __GLIBC_PREREQ(2,3)
142 /* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */
143 # define HB_USE_ATEXIT 1
145 # elif defined(_MSC_VER) || defined(__MINGW32__)
147 * http://msdn.microsoft.com/en-ca/library/tze57ck3.aspx
148 * http://msdn.microsoft.com/en-ca/library/zk17ww08.aspx
149 * mingw32 headers say atexit is safe to use in shared libraries.
151 # define HB_USE_ATEXIT 1
152 # elif defined(__ANDROID__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
153 /* This was fixed in Android NKD r8 or r8b:
154 * https://code.google.com/p/android/issues/detail?id=6455
155 * which introduced GCC 4.6:
156 * https://developer.android.com/tools/sdk/ndk/index.html
158 # define HB_USE_ATEXIT 1
166 # define NULL ((void *) 0)
170 template <typename Type>
171 static inline Type MIN (const Type &a, const Type &b) { return a < b ? a : b; }
174 template <typename Type>
175 static inline Type MAX (const Type &a, const Type &b) { return a > b ? a : b; }
177 static inline unsigned int DIV_CEIL (const unsigned int a, unsigned int b)
178 { return (a + (b - 1)) / b; }
182 template <typename Type, unsigned int n>
183 static inline unsigned int ARRAY_LENGTH (const Type (&)[n]) { return n; }
184 /* A const version, but does not detect erratically being called on pointers. */
185 #define ARRAY_LENGTH_CONST(__array) ((signed int) (sizeof (__array) / sizeof (__array[0])))
187 #define HB_STMT_START do
188 #define HB_STMT_END while (0)
190 #define _ASSERT_STATIC1(_line, _cond) HB_UNUSED typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
191 #define _ASSERT_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
192 #define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
194 #define ASSERT_STATIC_EXPR(_cond)((void) sizeof (char[(_cond) ? 1 : -1]))
195 #define ASSERT_STATIC_EXPR_ZERO(_cond) (0 * sizeof (char[(_cond) ? 1 : -1]))
197 #define _PASTE1(a,b) a##b
198 #define PASTE(a,b) _PASTE1(a,b)
200 /* Lets assert int types. Saves trouble down the road. */
202 ASSERT_STATIC (sizeof (int8_t) == 1);
203 ASSERT_STATIC (sizeof (uint8_t) == 1);
204 ASSERT_STATIC (sizeof (int16_t) == 2);
205 ASSERT_STATIC (sizeof (uint16_t) == 2);
206 ASSERT_STATIC (sizeof (int32_t) == 4);
207 ASSERT_STATIC (sizeof (uint32_t) == 4);
208 ASSERT_STATIC (sizeof (int64_t) == 8);
209 ASSERT_STATIC (sizeof (uint64_t) == 8);
211 ASSERT_STATIC (sizeof (hb_codepoint_t) == 4);
212 ASSERT_STATIC (sizeof (hb_position_t) == 4);
213 ASSERT_STATIC (sizeof (hb_mask_t) == 4);
214 ASSERT_STATIC (sizeof (hb_var_int_t) == 4);
217 /* We like our types POD */
219 #define _ASSERT_TYPE_POD1(_line, _type) union _type_##_type##_on_line_##_line##_is_not_POD { _type instance; }
220 #define _ASSERT_TYPE_POD0(_line, _type) _ASSERT_TYPE_POD1 (_line, _type)
221 #define ASSERT_TYPE_POD(_type) _ASSERT_TYPE_POD0 (__LINE__, _type)
224 # define _ASSERT_INSTANCE_POD1(_line, _instance) \
226 typedef __typeof__(_instance) _type_##_line; \
227 _ASSERT_TYPE_POD1 (_line, _type_##_line); \
230 # define _ASSERT_INSTANCE_POD1(_line, _instance) typedef int _assertion_on_line_##_line##_not_tested
232 # define _ASSERT_INSTANCE_POD0(_line, _instance) _ASSERT_INSTANCE_POD1 (_line, _instance)
233 # define ASSERT_INSTANCE_POD(_instance) _ASSERT_INSTANCE_POD0 (__LINE__, _instance)
235 /* Check _assertion in a method environment */
236 #define _ASSERT_POD1(_line) \
237 HB_UNUSED inline void _static_assertion_on_line_##_line (void) const \
238 { _ASSERT_INSTANCE_POD1 (_line, *this); /* Make sure it's POD. */ }
239 # define _ASSERT_POD0(_line) _ASSERT_POD1 (_line)
240 # define ASSERT_POD() _ASSERT_POD0 (__LINE__)
247 struct _hb_void_t {};
248 typedef const _hb_void_t &hb_void_t;
249 #define HB_VOID (* (const _hb_void_t *) NULL)
251 /* Return the number of 1 bits in mask. */
252 static inline HB_CONST_FUNC unsigned int
253 _hb_popcount32 (uint32_t mask)
255 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
256 return __builtin_popcount (mask);
260 y = (mask >> 1) &033333333333;
261 y = mask - y - ((y >>1) & 033333333333);
262 return (((y + (y >> 3)) & 030707070707) % 077);
266 /* Returns the number of bits needed to store number */
267 static inline HB_CONST_FUNC unsigned int
268 _hb_bit_storage (unsigned int number)
270 #if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
271 return likely (number) ? (sizeof (unsigned int) * 8 - __builtin_clz (number)) : 0;
273 unsigned int n_bits = 0;
282 /* Returns the number of zero bits in the least significant side of number */
283 static inline HB_CONST_FUNC unsigned int
284 _hb_ctz (unsigned int number)
286 #if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
287 return likely (number) ? __builtin_ctz (number) : 0;
289 unsigned int n_bits = 0;
290 if (unlikely (!number)) return 0;
291 while (!(number & 1)) {
300 _hb_unsigned_int_mul_overflows (unsigned int count, unsigned int size)
302 return (size > 0) && (count >= ((unsigned int) -1) / size);
306 /* Type of bsearch() / qsort() compare function */
307 typedef int (*hb_compare_func_t) (const void *, const void *);
312 /* arrays and maps */
315 #define HB_PREALLOCED_ARRAY_INIT {0, 0, NULL}
316 template <typename Type, unsigned int StaticSize=16>
317 struct hb_prealloced_array_t
320 unsigned int allocated;
322 Type static_array[StaticSize];
324 void init (void) { memset (this, 0, sizeof (*this)); }
326 inline Type& operator [] (unsigned int i) { return array[i]; }
327 inline const Type& operator [] (unsigned int i) const { return array[i]; }
329 inline Type *push (void)
332 array = static_array;
333 allocated = ARRAY_LENGTH (static_array);
335 if (likely (len < allocated))
336 return &array[len++];
338 /* Need to reallocate */
339 unsigned int new_allocated = allocated + (allocated >> 1) + 8;
340 Type *new_array = NULL;
342 if (array == static_array) {
343 new_array = (Type *) calloc (new_allocated, sizeof (Type));
345 memcpy (new_array, array, len * sizeof (Type));
347 bool overflows = (new_allocated < allocated) || _hb_unsigned_int_mul_overflows (new_allocated, sizeof (Type));
348 if (likely (!overflows)) {
349 new_array = (Type *) realloc (array, new_allocated * sizeof (Type));
353 if (unlikely (!new_array))
357 allocated = new_allocated;
358 return &array[len++];
361 inline void pop (void)
366 inline void remove (unsigned int i)
368 if (unlikely (i >= len))
370 memmove (static_cast<void *> (&array[i]),
371 static_cast<void *> (&array[i + 1]),
372 (len - i - 1) * sizeof (Type));
376 inline void shrink (unsigned int l)
382 template <typename T>
383 inline Type *find (T v) {
384 for (unsigned int i = 0; i < len; i++)
389 template <typename T>
390 inline const Type *find (T v) const {
391 for (unsigned int i = 0; i < len; i++)
397 inline void qsort (void)
399 ::qsort (array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
402 inline void qsort (unsigned int start, unsigned int end)
404 ::qsort (array + start, end - start, sizeof (Type), (hb_compare_func_t) Type::cmp);
407 template <typename T>
408 inline Type *bsearch (T *key)
410 return (Type *) ::bsearch (key, array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
412 template <typename T>
413 inline const Type *bsearch (T *key) const
415 return (const Type *) ::bsearch (key, array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
418 inline void finish (void)
420 if (array != static_array)
427 template <typename Type>
428 struct hb_auto_array_t : hb_prealloced_array_t <Type>
430 hb_auto_array_t (void) { hb_prealloced_array_t<Type>::init (); }
431 ~hb_auto_array_t (void) { hb_prealloced_array_t<Type>::finish (); }
435 #define HB_LOCKABLE_SET_INIT {HB_PREALLOCED_ARRAY_INIT}
436 template <typename item_t, typename lock_t>
437 struct hb_lockable_set_t
439 hb_prealloced_array_t <item_t, 2> items;
441 inline void init (void) { items.init (); }
443 template <typename T>
444 inline item_t *replace_or_insert (T v, lock_t &l, bool replace)
447 item_t *item = items.find (v);
460 item = items.push ();
468 template <typename T>
469 inline void remove (T v, lock_t &l)
472 item_t *item = items.find (v);
475 *item = items[items.len - 1];
484 template <typename T>
485 inline bool find (T v, item_t *i, lock_t &l)
488 item_t *item = items.find (v);
495 template <typename T>
496 inline item_t *find_or_insert (T v, lock_t &l)
499 item_t *item = items.find (v);
501 item = items.push ();
509 inline void finish (lock_t &l)
512 /* No need for locking. */
518 item_t old = items[items.len - 1];
531 /* ASCII tag/character handling */
533 static inline bool ISALPHA (unsigned char c)
534 { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); }
535 static inline bool ISALNUM (unsigned char c)
536 { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'); }
537 static inline bool ISSPACE (unsigned char c)
538 { return c == ' ' || c =='\f'|| c =='\n'|| c =='\r'|| c =='\t'|| c =='\v'; }
539 static inline unsigned char TOUPPER (unsigned char c)
540 { return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c; }
541 static inline unsigned char TOLOWER (unsigned char c)
542 { return (c >= 'A' && c <= 'Z') ? c - 'A' + 'a' : c; }
544 #define HB_TAG_CHAR4(s) (HB_TAG(((const char *) s)[0], \
545 ((const char *) s)[1], \
546 ((const char *) s)[2], \
547 ((const char *) s)[3]))
552 /* Makes class uncopyable. Use in private: section. */
555 T &operator = (const T &o)
566 _hb_debug (unsigned int level,
567 unsigned int max_level)
569 return level < max_level;
572 #define DEBUG_LEVEL_ENABLED(WHAT, LEVEL) (_hb_debug ((LEVEL), HB_DEBUG_##WHAT))
573 #define DEBUG_ENABLED(WHAT) (DEBUG_LEVEL_ENABLED (WHAT, 0))
576 _hb_print_func (const char *func)
580 unsigned int func_len = strlen (func);
582 if (0 == strncmp (func, "static ", 7))
584 /* Skip "typename" */
585 if (0 == strncmp (func, "typename ", 9))
587 /* Skip return type */
588 const char *space = strchr (func, ' ');
591 /* Skip parameter list */
592 const char *paren = strchr (func, '(');
594 func_len = paren - func;
595 fprintf (stderr, "%.*s", func_len, func);
599 template <int max_level> static inline void
600 _hb_debug_msg_va (const char *what,
607 va_list ap) HB_PRINTF_FUNC(7, 0);
608 template <int max_level> static inline void
609 _hb_debug_msg_va (const char *what,
618 if (!_hb_debug (level, max_level))
621 fprintf (stderr, "%-10s", what ? what : "");
624 fprintf (stderr, "(%0*lx) ", (unsigned int) (2 * sizeof (void *)), (unsigned long) obj);
626 fprintf (stderr, " %*s ", (unsigned int) (2 * sizeof (void *)), "");
629 /* One may want to add ASCII version of these. See:
630 * https://bugs.freedesktop.org/show_bug.cgi?id=50970 */
631 #define VBAR "\342\224\202" /* U+2502 BOX DRAWINGS LIGHT VERTICAL */
632 #define VRBAR "\342\224\234" /* U+251C BOX DRAWINGS LIGHT VERTICAL AND RIGHT */
633 #define DLBAR "\342\225\256" /* U+256E BOX DRAWINGS LIGHT ARC DOWN AND LEFT */
634 #define ULBAR "\342\225\257" /* U+256F BOX DRAWINGS LIGHT ARC UP AND LEFT */
635 #define LBAR "\342\225\264" /* U+2574 BOX DRAWINGS LIGHT LEFT */
636 static const char bars[] = VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR;
637 fprintf (stderr, "%2u %s" VRBAR "%s",
639 bars + sizeof (bars) - 1 - MIN ((unsigned int) sizeof (bars), (unsigned int) (sizeof (VBAR) - 1) * level),
640 level_dir ? (level_dir > 0 ? DLBAR : ULBAR) : LBAR);
642 fprintf (stderr, " " VRBAR LBAR);
644 _hb_print_func (func);
648 fprintf (stderr, ": ");
649 vfprintf (stderr, message, ap);
652 fprintf (stderr, "\n");
654 template <> inline void
655 _hb_debug_msg_va<0> (const char *what HB_UNUSED,
656 const void *obj HB_UNUSED,
657 const char *func HB_UNUSED,
658 bool indented HB_UNUSED,
659 unsigned int level HB_UNUSED,
660 int level_dir HB_UNUSED,
661 const char *message HB_UNUSED,
662 va_list ap HB_UNUSED) {}
664 template <int max_level> static inline void
665 _hb_debug_msg (const char *what,
672 ...) HB_PRINTF_FUNC(7, 8);
673 template <int max_level> static inline void
674 _hb_debug_msg (const char *what,
684 va_start (ap, message);
685 _hb_debug_msg_va<max_level> (what, obj, func, indented, level, level_dir, message, ap);
688 template <> inline void
689 _hb_debug_msg<0> (const char *what HB_UNUSED,
690 const void *obj HB_UNUSED,
691 const char *func HB_UNUSED,
692 bool indented HB_UNUSED,
693 unsigned int level HB_UNUSED,
694 int level_dir HB_UNUSED,
695 const char *message HB_UNUSED,
696 ...) HB_PRINTF_FUNC(7, 8);
697 template <> inline void
698 _hb_debug_msg<0> (const char *what HB_UNUSED,
699 const void *obj HB_UNUSED,
700 const char *func HB_UNUSED,
701 bool indented HB_UNUSED,
702 unsigned int level HB_UNUSED,
703 int level_dir HB_UNUSED,
704 const char *message HB_UNUSED,
707 #define DEBUG_MSG_LEVEL(WHAT, OBJ, LEVEL, LEVEL_DIR, ...) _hb_debug_msg<HB_DEBUG_##WHAT> (#WHAT, (OBJ), NULL, true, (LEVEL), (LEVEL_DIR), __VA_ARGS__)
708 #define DEBUG_MSG(WHAT, OBJ, ...) _hb_debug_msg<HB_DEBUG_##WHAT> (#WHAT, (OBJ), NULL, false, 0, 0, __VA_ARGS__)
709 #define DEBUG_MSG_FUNC(WHAT, OBJ, ...) _hb_debug_msg<HB_DEBUG_##WHAT> (#WHAT, (OBJ), HB_FUNC, false, 0, 0, __VA_ARGS__)
716 template <typename T>
717 struct hb_printer_t {
718 const char *print (const T&) { return "something"; }
722 struct hb_printer_t<bool> {
723 const char *print (bool v) { return v ? "true" : "false"; }
727 struct hb_printer_t<hb_void_t> {
728 const char *print (hb_void_t) { return ""; }
736 template <typename T>
737 static inline void _hb_warn_no_return (bool returned)
739 if (unlikely (!returned)) {
740 fprintf (stderr, "OUCH, returned with no call to TRACE_RETURN. This is a bug, please report.\n");
744 /*static*/ inline void _hb_warn_no_return<hb_void_t> (bool returned HB_UNUSED)
747 template <int max_level, typename ret_t>
748 struct hb_auto_trace_t {
749 explicit inline hb_auto_trace_t (unsigned int *plevel_,
754 ...) : plevel (plevel_), what (what_), obj (obj_), returned (false)
756 if (plevel) ++*plevel;
759 va_start (ap, message);
760 _hb_debug_msg_va<max_level> (what, obj, func, true, plevel ? *plevel : 0, +1, message, ap);
763 inline ~hb_auto_trace_t (void)
765 _hb_warn_no_return<ret_t> (returned);
767 _hb_debug_msg<max_level> (what, obj, NULL, true, plevel ? *plevel : 1, -1, " ");
769 if (plevel) --*plevel;
772 inline ret_t ret (ret_t v, unsigned int line = 0)
774 if (unlikely (returned)) {
775 fprintf (stderr, "OUCH, double calls to TRACE_RETURN. This is a bug, please report.\n");
779 _hb_debug_msg<max_level> (what, obj, NULL, true, plevel ? *plevel : 1, -1,
780 "return %s (line %d)",
781 hb_printer_t<ret_t>().print (v), line);
782 if (plevel) --*plevel;
789 unsigned int *plevel;
794 template <typename ret_t> /* Optimize when tracing is disabled */
795 struct hb_auto_trace_t<0, ret_t> {
796 explicit inline hb_auto_trace_t (unsigned int *plevel_ HB_UNUSED,
797 const char *what HB_UNUSED,
798 const void *obj HB_UNUSED,
799 const char *func HB_UNUSED,
800 const char *message HB_UNUSED,
803 inline ret_t ret (ret_t v, unsigned int line HB_UNUSED = 0) { return v; }
806 #define TRACE_RETURN(RET) trace.ret (RET, __LINE__)
810 template <typename T> class hb_assert_unsigned_t;
811 template <> class hb_assert_unsigned_t<unsigned char> {};
812 template <> class hb_assert_unsigned_t<unsigned short> {};
813 template <> class hb_assert_unsigned_t<unsigned int> {};
814 template <> class hb_assert_unsigned_t<unsigned long> {};
816 template <typename T> static inline bool
817 hb_in_range (T u, T lo, T hi)
819 /* The sizeof() is here to force template instantiation.
820 * I'm sure there are better ways to do this but can't think of
821 * one right now. Declaring a variable won't work as HB_UNUSED
822 * is unusable on some platforms and unused types are less likely
823 * to generate a warning than unused variables. */
824 ASSERT_STATIC (sizeof (hb_assert_unsigned_t<T>) >= 0);
826 /* The casts below are important as if T is smaller than int,
827 * the subtract results will become a signed int! */
828 return (T)(u - lo) <= (T)(hi - lo);
831 template <typename T> static inline bool
832 hb_in_ranges (T u, T lo1, T hi1, T lo2, T hi2)
834 return hb_in_range (u, lo1, hi1) || hb_in_range (u, lo2, hi2);
837 template <typename T> static inline bool
838 hb_in_ranges (T u, T lo1, T hi1, T lo2, T hi2, T lo3, T hi3)
840 return hb_in_range (u, lo1, hi1) || hb_in_range (u, lo2, hi2) || hb_in_range (u, lo3, hi3);
844 /* Useful for set-operations on small enums.
845 * For example, for testing "x ∈ {x1, x2, x3}" use:
846 * (FLAG(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
848 #define FLAG(x) (1<<(x))
849 #define FLAG_RANGE(x,y) (ASSERT_STATIC_EXPR_ZERO ((x) < (y)) + FLAG(y+1) - FLAG(x))
852 template <typename T, typename T2> static inline void
853 hb_bubble_sort (T *array, unsigned int len, int(*compar)(const T *, const T *), T2 *array2)
858 unsigned int k = len - 1;
860 unsigned int new_k = 0;
862 for (unsigned int j = 0; j < k; j++)
863 if (compar (&array[j], &array[j+1]) > 0)
868 array[j] = array[j + 1];
875 array2[j] = array2[j + 1];
885 template <typename T> static inline void
886 hb_bubble_sort (T *array, unsigned int len, int(*compar)(const T *, const T *))
888 hb_bubble_sort (array, len, compar, (int *) NULL);
891 static inline hb_bool_t
892 hb_codepoint_parse (const char *s, unsigned int len, int base, hb_codepoint_t *out)
894 /* Pain because we don't know whether s is nul-terminated. */
896 len = MIN (ARRAY_LENGTH (buf) - 1, len);
897 strncpy (buf, s, len);
902 unsigned long v = strtoul (buf, &end, base);
903 if (errno) return false;
904 if (*end) return false;
910 /* Global runtime options. */
914 unsigned int initialized : 1;
915 unsigned int uniscribe_bug_compatible : 1;
918 union hb_options_union_t {
922 ASSERT_STATIC (sizeof (int) == sizeof (hb_options_union_t));
925 _hb_options_init (void);
927 extern HB_INTERNAL hb_options_union_t _hb_options;
929 static inline hb_options_t
932 if (unlikely (!_hb_options.i))
935 return _hb_options.opts;
939 #endif /* HB_PRIVATE_HH */