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 getenv(Name) NULL
125 # define setlocale(Category, Locale) "C"
126 static int errno = 0; /* Use something better? */
127 # elif defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
128 # define getenv(Name) NULL
130 # if (defined(__WIN32__) && !defined(__WINE__)) || defined(_MSC_VER)
131 # define snprintf _snprintf
132 /* Windows CE only has _strdup, while rest of Windows has both. */
133 # define strdup _strdup
138 /* atexit() is only safe to be called from shared libraries on certain
139 * platforms. Whitelist.
140 * https://bugs.freedesktop.org/show_bug.cgi?id=82246 */
141 # if defined(__linux) && defined(__GLIBC_PREREQ)
142 # if __GLIBC_PREREQ(2,3)
143 /* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */
144 # define HB_USE_ATEXIT 1
146 # elif defined(_MSC_VER) || defined(__MINGW32__)
148 * http://msdn.microsoft.com/en-ca/library/tze57ck3.aspx
149 * http://msdn.microsoft.com/en-ca/library/zk17ww08.aspx
150 * mingw32 headers say atexit is safe to use in shared libraries.
152 # define HB_USE_ATEXIT 1
153 # elif defined(__ANDROID__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
154 /* This was fixed in Android NKD r8 or r8b:
155 * https://code.google.com/p/android/issues/detail?id=6455
156 * which introduced GCC 4.6:
157 * https://developer.android.com/tools/sdk/ndk/index.html
159 # define HB_USE_ATEXIT 1
167 # define NULL ((void *) 0)
171 template <typename Type>
172 static inline Type MIN (const Type &a, const Type &b) { return a < b ? a : b; }
175 template <typename Type>
176 static inline Type MAX (const Type &a, const Type &b) { return a > b ? a : b; }
178 static inline unsigned int DIV_CEIL (const unsigned int a, unsigned int b)
179 { return (a + (b - 1)) / b; }
183 template <typename Type, unsigned int n>
184 static inline unsigned int ARRAY_LENGTH (const Type (&)[n]) { return n; }
185 /* A const version, but does not detect erratically being called on pointers. */
186 #define ARRAY_LENGTH_CONST(__array) ((signed int) (sizeof (__array) / sizeof (__array[0])))
188 #define HB_STMT_START do
189 #define HB_STMT_END while (0)
191 #define _ASSERT_STATIC1(_line, _cond) HB_UNUSED typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
192 #define _ASSERT_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
193 #define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
195 #define ASSERT_STATIC_EXPR(_cond)((void) sizeof (char[(_cond) ? 1 : -1]))
196 #define ASSERT_STATIC_EXPR_ZERO(_cond) (0 * sizeof (char[(_cond) ? 1 : -1]))
198 #define _PASTE1(a,b) a##b
199 #define PASTE(a,b) _PASTE1(a,b)
201 /* Lets assert int types. Saves trouble down the road. */
203 ASSERT_STATIC (sizeof (int8_t) == 1);
204 ASSERT_STATIC (sizeof (uint8_t) == 1);
205 ASSERT_STATIC (sizeof (int16_t) == 2);
206 ASSERT_STATIC (sizeof (uint16_t) == 2);
207 ASSERT_STATIC (sizeof (int32_t) == 4);
208 ASSERT_STATIC (sizeof (uint32_t) == 4);
209 ASSERT_STATIC (sizeof (int64_t) == 8);
210 ASSERT_STATIC (sizeof (uint64_t) == 8);
212 ASSERT_STATIC (sizeof (hb_codepoint_t) == 4);
213 ASSERT_STATIC (sizeof (hb_position_t) == 4);
214 ASSERT_STATIC (sizeof (hb_mask_t) == 4);
215 ASSERT_STATIC (sizeof (hb_var_int_t) == 4);
218 /* We like our types POD */
220 #define _ASSERT_TYPE_POD1(_line, _type) union _type_##_type##_on_line_##_line##_is_not_POD { _type instance; }
221 #define _ASSERT_TYPE_POD0(_line, _type) _ASSERT_TYPE_POD1 (_line, _type)
222 #define ASSERT_TYPE_POD(_type) _ASSERT_TYPE_POD0 (__LINE__, _type)
225 # define _ASSERT_INSTANCE_POD1(_line, _instance) \
227 typedef __typeof__(_instance) _type_##_line; \
228 _ASSERT_TYPE_POD1 (_line, _type_##_line); \
231 # define _ASSERT_INSTANCE_POD1(_line, _instance) typedef int _assertion_on_line_##_line##_not_tested
233 # define _ASSERT_INSTANCE_POD0(_line, _instance) _ASSERT_INSTANCE_POD1 (_line, _instance)
234 # define ASSERT_INSTANCE_POD(_instance) _ASSERT_INSTANCE_POD0 (__LINE__, _instance)
236 /* Check _assertion in a method environment */
237 #define _ASSERT_POD1(_line) \
238 HB_UNUSED inline void _static_assertion_on_line_##_line (void) const \
239 { _ASSERT_INSTANCE_POD1 (_line, *this); /* Make sure it's POD. */ }
240 # define _ASSERT_POD0(_line) _ASSERT_POD1 (_line)
241 # define ASSERT_POD() _ASSERT_POD0 (__LINE__)
248 struct _hb_void_t {};
249 typedef const _hb_void_t &hb_void_t;
250 #define HB_VOID (* (const _hb_void_t *) NULL)
252 /* Return the number of 1 bits in mask. */
253 static inline HB_CONST_FUNC unsigned int
254 _hb_popcount32 (uint32_t mask)
256 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
257 return __builtin_popcount (mask);
261 y = (mask >> 1) &033333333333;
262 y = mask - y - ((y >>1) & 033333333333);
263 return (((y + (y >> 3)) & 030707070707) % 077);
267 /* Returns the number of bits needed to store number */
268 static inline HB_CONST_FUNC unsigned int
269 _hb_bit_storage (unsigned int number)
271 #if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
272 return likely (number) ? (sizeof (unsigned int) * 8 - __builtin_clz (number)) : 0;
274 unsigned int n_bits = 0;
283 /* Returns the number of zero bits in the least significant side of number */
284 static inline HB_CONST_FUNC unsigned int
285 _hb_ctz (unsigned int number)
287 #if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
288 return likely (number) ? __builtin_ctz (number) : 0;
290 unsigned int n_bits = 0;
291 if (unlikely (!number)) return 0;
292 while (!(number & 1)) {
301 _hb_unsigned_int_mul_overflows (unsigned int count, unsigned int size)
303 return (size > 0) && (count >= ((unsigned int) -1) / size);
307 /* Type of bsearch() / qsort() compare function */
308 typedef int (*hb_compare_func_t) (const void *, const void *);
313 /* arrays and maps */
316 #define HB_PREALLOCED_ARRAY_INIT {0, 0, NULL}
317 template <typename Type, unsigned int StaticSize=16>
318 struct hb_prealloced_array_t
321 unsigned int allocated;
323 Type static_array[StaticSize];
325 void init (void) { memset (this, 0, sizeof (*this)); }
327 inline Type& operator [] (unsigned int i) { return array[i]; }
328 inline const Type& operator [] (unsigned int i) const { return array[i]; }
330 inline Type *push (void)
333 array = static_array;
334 allocated = ARRAY_LENGTH (static_array);
336 if (likely (len < allocated))
337 return &array[len++];
339 /* Need to reallocate */
340 unsigned int new_allocated = allocated + (allocated >> 1) + 8;
341 Type *new_array = NULL;
343 if (array == static_array) {
344 new_array = (Type *) calloc (new_allocated, sizeof (Type));
346 memcpy (new_array, array, len * sizeof (Type));
348 bool overflows = (new_allocated < allocated) || _hb_unsigned_int_mul_overflows (new_allocated, sizeof (Type));
349 if (likely (!overflows)) {
350 new_array = (Type *) realloc (array, new_allocated * sizeof (Type));
354 if (unlikely (!new_array))
358 allocated = new_allocated;
359 return &array[len++];
362 inline void pop (void)
367 inline void remove (unsigned int i)
369 if (unlikely (i >= len))
371 memmove (static_cast<void *> (&array[i]),
372 static_cast<void *> (&array[i + 1]),
373 (len - i - 1) * sizeof (Type));
377 inline void shrink (unsigned int l)
383 template <typename T>
384 inline Type *find (T v) {
385 for (unsigned int i = 0; i < len; i++)
390 template <typename T>
391 inline const Type *find (T v) const {
392 for (unsigned int i = 0; i < len; i++)
398 inline void qsort (void)
400 ::qsort (array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
403 inline void qsort (unsigned int start, unsigned int end)
405 ::qsort (array + start, end - start, sizeof (Type), (hb_compare_func_t) Type::cmp);
408 template <typename T>
409 inline Type *bsearch (T *key)
411 return (Type *) ::bsearch (key, array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
413 template <typename T>
414 inline const Type *bsearch (T *key) const
416 return (const Type *) ::bsearch (key, array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
419 inline void finish (void)
421 if (array != static_array)
428 template <typename Type>
429 struct hb_auto_array_t : hb_prealloced_array_t <Type>
431 hb_auto_array_t (void) { hb_prealloced_array_t<Type>::init (); }
432 ~hb_auto_array_t (void) { hb_prealloced_array_t<Type>::finish (); }
436 #define HB_LOCKABLE_SET_INIT {HB_PREALLOCED_ARRAY_INIT}
437 template <typename item_t, typename lock_t>
438 struct hb_lockable_set_t
440 hb_prealloced_array_t <item_t, 2> items;
442 inline void init (void) { items.init (); }
444 template <typename T>
445 inline item_t *replace_or_insert (T v, lock_t &l, bool replace)
448 item_t *item = items.find (v);
461 item = items.push ();
469 template <typename T>
470 inline void remove (T v, lock_t &l)
473 item_t *item = items.find (v);
476 *item = items[items.len - 1];
485 template <typename T>
486 inline bool find (T v, item_t *i, lock_t &l)
489 item_t *item = items.find (v);
496 template <typename T>
497 inline item_t *find_or_insert (T v, lock_t &l)
500 item_t *item = items.find (v);
502 item = items.push ();
510 inline void finish (lock_t &l)
513 /* No need for locking. */
519 item_t old = items[items.len - 1];
532 /* ASCII tag/character handling */
534 static inline bool ISALPHA (unsigned char c)
535 { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); }
536 static inline bool ISALNUM (unsigned char c)
537 { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'); }
538 static inline bool ISSPACE (unsigned char c)
539 { return c == ' ' || c =='\f'|| c =='\n'|| c =='\r'|| c =='\t'|| c =='\v'; }
540 static inline unsigned char TOUPPER (unsigned char c)
541 { return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c; }
542 static inline unsigned char TOLOWER (unsigned char c)
543 { return (c >= 'A' && c <= 'Z') ? c - 'A' + 'a' : c; }
545 #define HB_TAG_CHAR4(s) (HB_TAG(((const char *) s)[0], \
546 ((const char *) s)[1], \
547 ((const char *) s)[2], \
548 ((const char *) s)[3]))
553 /* Makes class uncopyable. Use in private: section. */
556 T &operator = (const T &o)
567 _hb_debug (unsigned int level,
568 unsigned int max_level)
570 return level < max_level;
573 #define DEBUG_LEVEL_ENABLED(WHAT, LEVEL) (_hb_debug ((LEVEL), HB_DEBUG_##WHAT))
574 #define DEBUG_ENABLED(WHAT) (DEBUG_LEVEL_ENABLED (WHAT, 0))
577 _hb_print_func (const char *func)
581 unsigned int func_len = strlen (func);
583 if (0 == strncmp (func, "static ", 7))
585 /* Skip "typename" */
586 if (0 == strncmp (func, "typename ", 9))
588 /* Skip return type */
589 const char *space = strchr (func, ' ');
592 /* Skip parameter list */
593 const char *paren = strchr (func, '(');
595 func_len = paren - func;
596 fprintf (stderr, "%.*s", func_len, func);
600 template <int max_level> static inline void
601 _hb_debug_msg_va (const char *what,
608 va_list ap) HB_PRINTF_FUNC(7, 0);
609 template <int max_level> static inline void
610 _hb_debug_msg_va (const char *what,
619 if (!_hb_debug (level, max_level))
622 fprintf (stderr, "%-10s", what ? what : "");
625 fprintf (stderr, "(%0*lx) ", (unsigned int) (2 * sizeof (void *)), (unsigned long) obj);
627 fprintf (stderr, " %*s ", (unsigned int) (2 * sizeof (void *)), "");
630 /* One may want to add ASCII version of these. See:
631 * https://bugs.freedesktop.org/show_bug.cgi?id=50970 */
632 #define VBAR "\342\224\202" /* U+2502 BOX DRAWINGS LIGHT VERTICAL */
633 #define VRBAR "\342\224\234" /* U+251C BOX DRAWINGS LIGHT VERTICAL AND RIGHT */
634 #define DLBAR "\342\225\256" /* U+256E BOX DRAWINGS LIGHT ARC DOWN AND LEFT */
635 #define ULBAR "\342\225\257" /* U+256F BOX DRAWINGS LIGHT ARC UP AND LEFT */
636 #define LBAR "\342\225\264" /* U+2574 BOX DRAWINGS LIGHT LEFT */
637 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;
638 fprintf (stderr, "%2u %s" VRBAR "%s",
640 bars + sizeof (bars) - 1 - MIN ((unsigned int) sizeof (bars), (unsigned int) (sizeof (VBAR) - 1) * level),
641 level_dir ? (level_dir > 0 ? DLBAR : ULBAR) : LBAR);
643 fprintf (stderr, " " VRBAR LBAR);
645 _hb_print_func (func);
649 fprintf (stderr, ": ");
650 vfprintf (stderr, message, ap);
653 fprintf (stderr, "\n");
655 template <> inline void
656 _hb_debug_msg_va<0> (const char *what HB_UNUSED,
657 const void *obj HB_UNUSED,
658 const char *func HB_UNUSED,
659 bool indented HB_UNUSED,
660 unsigned int level HB_UNUSED,
661 int level_dir HB_UNUSED,
662 const char *message HB_UNUSED,
663 va_list ap HB_UNUSED) {}
665 template <int max_level> static inline void
666 _hb_debug_msg (const char *what,
673 ...) HB_PRINTF_FUNC(7, 8);
674 template <int max_level> static inline void
675 _hb_debug_msg (const char *what,
685 va_start (ap, message);
686 _hb_debug_msg_va<max_level> (what, obj, func, indented, level, level_dir, message, ap);
689 template <> inline void
690 _hb_debug_msg<0> (const char *what HB_UNUSED,
691 const void *obj HB_UNUSED,
692 const char *func HB_UNUSED,
693 bool indented HB_UNUSED,
694 unsigned int level HB_UNUSED,
695 int level_dir HB_UNUSED,
696 const char *message HB_UNUSED,
697 ...) HB_PRINTF_FUNC(7, 8);
698 template <> inline void
699 _hb_debug_msg<0> (const char *what HB_UNUSED,
700 const void *obj HB_UNUSED,
701 const char *func HB_UNUSED,
702 bool indented HB_UNUSED,
703 unsigned int level HB_UNUSED,
704 int level_dir HB_UNUSED,
705 const char *message HB_UNUSED,
708 #define DEBUG_MSG_LEVEL(WHAT, OBJ, LEVEL, LEVEL_DIR, ...) _hb_debug_msg<HB_DEBUG_##WHAT> (#WHAT, (OBJ), NULL, true, (LEVEL), (LEVEL_DIR), __VA_ARGS__)
709 #define DEBUG_MSG(WHAT, OBJ, ...) _hb_debug_msg<HB_DEBUG_##WHAT> (#WHAT, (OBJ), NULL, false, 0, 0, __VA_ARGS__)
710 #define DEBUG_MSG_FUNC(WHAT, OBJ, ...) _hb_debug_msg<HB_DEBUG_##WHAT> (#WHAT, (OBJ), HB_FUNC, false, 0, 0, __VA_ARGS__)
717 template <typename T>
718 struct hb_printer_t {
719 const char *print (const T&) { return "something"; }
723 struct hb_printer_t<bool> {
724 const char *print (bool v) { return v ? "true" : "false"; }
728 struct hb_printer_t<hb_void_t> {
729 const char *print (hb_void_t) { return ""; }
737 template <typename T>
738 static inline void _hb_warn_no_return (bool returned)
740 if (unlikely (!returned)) {
741 fprintf (stderr, "OUCH, returned with no call to TRACE_RETURN. This is a bug, please report.\n");
745 /*static*/ inline void _hb_warn_no_return<hb_void_t> (bool returned HB_UNUSED)
748 template <int max_level, typename ret_t>
749 struct hb_auto_trace_t {
750 explicit inline hb_auto_trace_t (unsigned int *plevel_,
755 ...) : plevel (plevel_), what (what_), obj (obj_), returned (false)
757 if (plevel) ++*plevel;
760 va_start (ap, message);
761 _hb_debug_msg_va<max_level> (what, obj, func, true, plevel ? *plevel : 0, +1, message, ap);
764 inline ~hb_auto_trace_t (void)
766 _hb_warn_no_return<ret_t> (returned);
768 _hb_debug_msg<max_level> (what, obj, NULL, true, plevel ? *plevel : 1, -1, " ");
770 if (plevel) --*plevel;
773 inline ret_t ret (ret_t v, unsigned int line = 0)
775 if (unlikely (returned)) {
776 fprintf (stderr, "OUCH, double calls to TRACE_RETURN. This is a bug, please report.\n");
780 _hb_debug_msg<max_level> (what, obj, NULL, true, plevel ? *plevel : 1, -1,
781 "return %s (line %d)",
782 hb_printer_t<ret_t>().print (v), line);
783 if (plevel) --*plevel;
790 unsigned int *plevel;
795 template <typename ret_t> /* Optimize when tracing is disabled */
796 struct hb_auto_trace_t<0, ret_t> {
797 explicit inline hb_auto_trace_t (unsigned int *plevel_ HB_UNUSED,
798 const char *what HB_UNUSED,
799 const void *obj HB_UNUSED,
800 const char *func HB_UNUSED,
801 const char *message HB_UNUSED,
804 inline ret_t ret (ret_t v, unsigned int line HB_UNUSED = 0) { return v; }
807 #define TRACE_RETURN(RET) trace.ret (RET, __LINE__)
811 template <typename T> class hb_assert_unsigned_t;
812 template <> class hb_assert_unsigned_t<unsigned char> {};
813 template <> class hb_assert_unsigned_t<unsigned short> {};
814 template <> class hb_assert_unsigned_t<unsigned int> {};
815 template <> class hb_assert_unsigned_t<unsigned long> {};
817 template <typename T> static inline bool
818 hb_in_range (T u, T lo, T hi)
820 /* The sizeof() is here to force template instantiation.
821 * I'm sure there are better ways to do this but can't think of
822 * one right now. Declaring a variable won't work as HB_UNUSED
823 * is unusable on some platforms and unused types are less likely
824 * to generate a warning than unused variables. */
825 ASSERT_STATIC (sizeof (hb_assert_unsigned_t<T>) >= 0);
827 /* The casts below are important as if T is smaller than int,
828 * the subtract results will become a signed int! */
829 return (T)(u - lo) <= (T)(hi - lo);
832 template <typename T> static inline bool
833 hb_in_ranges (T u, T lo1, T hi1, T lo2, T hi2)
835 return hb_in_range (u, lo1, hi1) || hb_in_range (u, lo2, hi2);
838 template <typename T> static inline bool
839 hb_in_ranges (T u, T lo1, T hi1, T lo2, T hi2, T lo3, T hi3)
841 return hb_in_range (u, lo1, hi1) || hb_in_range (u, lo2, hi2) || hb_in_range (u, lo3, hi3);
845 /* Useful for set-operations on small enums.
846 * For example, for testing "x ∈ {x1, x2, x3}" use:
847 * (FLAG(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
849 #define FLAG(x) (1<<(x))
850 #define FLAG_RANGE(x,y) (ASSERT_STATIC_EXPR_ZERO ((x) < (y)) + FLAG(y+1) - FLAG(x))
853 template <typename T, typename T2> static inline void
854 hb_bubble_sort (T *array, unsigned int len, int(*compar)(const T *, const T *), T2 *array2)
859 unsigned int k = len - 1;
861 unsigned int new_k = 0;
863 for (unsigned int j = 0; j < k; j++)
864 if (compar (&array[j], &array[j+1]) > 0)
869 array[j] = array[j + 1];
876 array2[j] = array2[j + 1];
886 template <typename T> static inline void
887 hb_bubble_sort (T *array, unsigned int len, int(*compar)(const T *, const T *))
889 hb_bubble_sort (array, len, compar, (int *) NULL);
892 static inline hb_bool_t
893 hb_codepoint_parse (const char *s, unsigned int len, int base, hb_codepoint_t *out)
895 /* Pain because we don't know whether s is nul-terminated. */
897 len = MIN (ARRAY_LENGTH (buf) - 1, len);
898 strncpy (buf, s, len);
903 unsigned long v = strtoul (buf, &end, base);
904 if (errno) return false;
905 if (*end) return false;
911 /* Global runtime options. */
915 unsigned int initialized : 1;
916 unsigned int uniscribe_bug_compatible : 1;
919 union hb_options_union_t {
923 ASSERT_STATIC (sizeof (int) == sizeof (hb_options_union_t));
926 _hb_options_init (void);
928 extern HB_INTERNAL hb_options_union_t _hb_options;
930 static inline hb_options_t
933 if (unlikely (!_hb_options.i))
936 return _hb_options.opts;
940 #endif /* HB_PRIVATE_HH */