#include <stdarg.h>
+/* Compile-time custom allocator support. */
+
+#if defined(hb_malloc_impl) \
+ && defined(hb_calloc_impl) \
+ && defined(hb_realloc_impl) \
+ && defined(hb_free_impl)
+extern "C" void* hb_malloc_impl(size_t size);
+extern "C" void* hb_calloc_impl(size_t nmemb, size_t size);
+extern "C" void* hb_realloc_impl(void *ptr, size_t size);
+extern "C" void hb_free_impl(void *ptr);
+#define malloc hb_malloc_impl
+#define calloc hb_calloc_impl
+#define realloc hb_realloc_impl
+#define free hb_free_impl
+#endif
-/* Essentials */
-#ifndef NULL
-# define NULL ((void *) 0)
+/* Compiler attributes */
+
+
+#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
+#define _HB_BOOLEAN_EXPR(expr) ((expr) ? 1 : 0)
+#define likely(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 1))
+#define unlikely(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 0))
+#else
+#define likely(expr) (expr)
+#define unlikely(expr) (expr)
#endif
+#ifndef __GNUC__
+#undef __attribute__
+#define __attribute__(x)
+#endif
-/* Void! */
-struct _hb_void_t {};
-typedef const _hb_void_t &hb_void_t;
-#define HB_VOID (* (const _hb_void_t *) NULL)
+#if __GNUC__ >= 3
+#define HB_PURE_FUNC __attribute__((pure))
+#define HB_CONST_FUNC __attribute__((const))
+#define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx)))
+#else
+#define HB_PURE_FUNC
+#define HB_CONST_FUNC
+#define HB_PRINTF_FUNC(format_idx, arg_idx)
+#endif
+#if __GNUC__ >= 4
+#define HB_UNUSED __attribute__((unused))
+#else
+#define HB_UNUSED
+#endif
+
+#ifndef HB_INTERNAL
+# if !defined(__MINGW32__) && !defined(__CYGWIN__)
+# define HB_INTERNAL __attribute__((__visibility__("hidden")))
+# else
+# define HB_INTERNAL
+# endif
+#endif
+
+#if __GNUC__ >= 3
+#define HB_FUNC __PRETTY_FUNCTION__
+#elif defined(_MSC_VER)
+#define HB_FUNC __FUNCSIG__
+#else
+#define HB_FUNC __func__
+#endif
+
+/*
+ * Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411
+ * HB_FALLTHROUGH is an annotation to suppress compiler warnings about switch
+ * cases that fall through without a break or return statement. HB_FALLTHROUGH
+ * is only needed on cases that have code:
+ *
+ * switch (foo) {
+ * case 1: // These cases have no code. No fallthrough annotations are needed.
+ * case 2:
+ * case 3:
+ * foo = 4; // This case has code, so a fallthrough annotation is needed:
+ * HB_FALLTHROUGH;
+ * default:
+ * return foo;
+ * }
+ */
+#if defined(__clang__) && __cplusplus >= 201103L
+ /* clang's fallthrough annotations are only available starting in C++11. */
+# define HB_FALLTHROUGH [[clang::fallthrough]]
+#elif defined(_MSC_VER)
+ /*
+ * MSVC's __fallthrough annotations are checked by /analyze (Code Analysis):
+ * https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx
+ */
+# include <sal.h>
+# define HB_FALLTHROUGH __fallthrough
+#else
+# define HB_FALLTHROUGH /* FALLTHROUGH */
+#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+ /* We need Windows Vista for both Uniscribe backend and for
+ * MemoryBarrier. We don't support compiling on Windows XP,
+ * though we run on it fine. */
+# if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600
+# undef _WIN32_WINNT
+# endif
+# ifndef _WIN32_WINNT
+# define _WIN32_WINNT 0x0600
+# endif
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN 1
+# endif
+# ifndef STRICT
+# define STRICT 1
+# endif
+
+# if defined(_WIN32_WCE)
+ /* Some things not defined on Windows CE. */
+# define strdup _strdup
+# define vsnprintf _vsnprintf
+# define getenv(Name) NULL
+# if _WIN32_WCE < 0x800
+# define setlocale(Category, Locale) "C"
+static int errno = 0; /* Use something better? */
+# endif
+# elif defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
+# define getenv(Name) NULL
+# endif
+# if defined(_MSC_VER) && _MSC_VER < 1900
+# define snprintf _snprintf
+# elif defined(_MSC_VER) && _MSC_VER >= 1900
+# /* Covers VC++ Error for strdup being a deprecated POSIX name and to instead use _strdup instead */
+# define strdup _strdup
+# endif
+#endif
+
+#if HAVE_ATEXIT
+/* atexit() is only safe to be called from shared libraries on certain
+ * platforms. Whitelist.
+ * https://bugs.freedesktop.org/show_bug.cgi?id=82246 */
+# if defined(__linux) && defined(__GLIBC_PREREQ)
+# if __GLIBC_PREREQ(2,3)
+/* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */
+# define HB_USE_ATEXIT 1
+# endif
+# elif defined(_MSC_VER) || defined(__MINGW32__)
+/* For MSVC:
+ * http://msdn.microsoft.com/en-ca/library/tze57ck3.aspx
+ * http://msdn.microsoft.com/en-ca/library/zk17ww08.aspx
+ * mingw32 headers say atexit is safe to use in shared libraries.
+ */
+# define HB_USE_ATEXIT 1
+# elif defined(__ANDROID__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+/* This was fixed in Android NKD r8 or r8b:
+ * https://code.google.com/p/android/issues/detail?id=6455
+ * which introduced GCC 4.6:
+ * https://developer.android.com/tools/sdk/ndk/index.html
+ */
+# define HB_USE_ATEXIT 1
+# endif
+#endif
/* Basics */
+#ifndef NULL
+# define NULL ((void *) 0)
+#endif
+
#undef MIN
template <typename Type>
static inline Type MIN (const Type &a, const Type &b) { return a < b ? a : b; }
template <typename Type>
static inline Type MAX (const Type &a, const Type &b) { return a > b ? a : b; }
+static inline unsigned int DIV_CEIL (const unsigned int a, unsigned int b)
+{ return (a + (b - 1)) / b; }
+
#undef ARRAY_LENGTH
template <typename Type, unsigned int n>
#define HB_STMT_START do
#define HB_STMT_END while (0)
-#define _ASSERT_STATIC1(_line, _cond) typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
+#define _ASSERT_STATIC1(_line, _cond) HB_UNUSED typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
#define _ASSERT_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
#define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
-#define ASSERT_STATIC_EXPR(_cond)((void) sizeof (char[(_cond) ? 1 : -1]))
-#define ASSERT_STATIC_EXPR_ZERO(_cond) (0 * sizeof (char[(_cond) ? 1 : -1]))
+template <unsigned int cond> class hb_assert_constant_t {};
+
+#define ASSERT_STATIC_EXPR_ZERO(_cond) (0 * (unsigned int) sizeof (hb_assert_constant_t<_cond>))
#define _PASTE1(a,b) a##b
#define PASTE(a,b) _PASTE1(a,b)
/* Check _assertion in a method environment */
#define _ASSERT_POD1(_line) \
- inline void _static_assertion_on_line_##_line (void) const \
+ HB_UNUSED inline void _static_assertion_on_line_##_line (void) const \
{ _ASSERT_INSTANCE_POD1 (_line, *this); /* Make sure it's POD. */ }
# define _ASSERT_POD0(_line) _ASSERT_POD1 (_line)
# define ASSERT_POD() _ASSERT_POD0 (__LINE__)
/* Misc */
-
-#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
-#define _HB_BOOLEAN_EXPR(expr) ((expr) ? 1 : 0)
-#define likely(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 1))
-#define unlikely(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 0))
-#else
-#define likely(expr) (expr)
-#define unlikely(expr) (expr)
-#endif
-
-#ifndef __GNUC__
-#undef __attribute__
-#define __attribute__(x)
-#endif
-
-#if __GNUC__ >= 3
-#define HB_PURE_FUNC __attribute__((pure))
-#define HB_CONST_FUNC __attribute__((const))
-#define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx)))
-#else
-#define HB_PURE_FUNC
-#define HB_CONST_FUNC
-#define HB_PRINTF_FUNC(format_idx, arg_idx)
-#endif
-#if __GNUC__ >= 4
-#define HB_UNUSED __attribute__((unused))
-#else
-#define HB_UNUSED
-#endif
-
-#ifndef HB_INTERNAL
-# ifndef __MINGW32__
-# define HB_INTERNAL __attribute__((__visibility__("hidden")))
-# else
-# define HB_INTERNAL
-# endif
-#endif
-
-
-#if (defined(__WIN32__) && !defined(__WINE__)) || defined(_MSC_VER)
-#define snprintf _snprintf
-#endif
-
-#ifdef _MSC_VER
-#undef inline
-#define inline __inline
-#endif
-
-#ifdef __STRICT_ANSI__
-#undef inline
-#define inline __inline__
-#endif
-
-
-#if __GNUC__ >= 3
-#define HB_FUNC __PRETTY_FUNCTION__
-#elif defined(_MSC_VER)
-#define HB_FUNC __FUNCSIG__
-#else
-#define HB_FUNC __func__
-#endif
-
+/* Void! */
+struct _hb_void_t {};
+typedef const _hb_void_t *hb_void_t;
+#define HB_VOID ((const _hb_void_t *) NULL)
/* Return the number of 1 bits in mask. */
static inline HB_CONST_FUNC unsigned int
return __builtin_popcount (mask);
#else
/* "HACKMEM 169" */
- register uint32_t y;
+ uint32_t y;
y = (mask >> 1) &033333333333;
y = mask - y - ((y >>1) & 033333333333);
return (((y + (y >> 3)) & 030707070707) % 077);
#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
return likely (number) ? (sizeof (unsigned int) * 8 - __builtin_clz (number)) : 0;
#else
- register unsigned int n_bits = 0;
+ unsigned int n_bits = 0;
while (number) {
n_bits++;
number >>= 1;
#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
return likely (number) ? __builtin_ctz (number) : 0;
#else
- register unsigned int n_bits = 0;
+ unsigned int n_bits = 0;
if (unlikely (!number)) return 0;
while (!(number & 1)) {
n_bits++;
/* arrays and maps */
-#define HB_PREALLOCED_ARRAY_INIT {0}
-template <typename Type, unsigned int StaticSize>
+#define HB_PREALLOCED_ARRAY_INIT {0, 0, NULL}
+template <typename Type, unsigned int StaticSize=16>
struct hb_prealloced_array_t
{
unsigned int len;
inline void pop (void)
{
len--;
- /* TODO: shrink array if needed */
+ }
+
+ inline void remove (unsigned int i)
+ {
+ if (unlikely (i >= len))
+ return;
+ memmove (static_cast<void *> (&array[i]),
+ static_cast<void *> (&array[i + 1]),
+ (len - i - 1) * sizeof (Type));
+ len--;
}
inline void shrink (unsigned int l)
{
if (l < len)
len = l;
- /* TODO: shrink array if needed */
}
template <typename T>
return NULL;
}
- inline void sort (void)
+ inline void qsort (void)
{
- qsort (array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
+ ::qsort (array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
}
- inline void sort (unsigned int start, unsigned int end)
+ inline void qsort (unsigned int start, unsigned int end)
{
- qsort (array + start, end - start, sizeof (Type), (hb_compare_func_t) Type::cmp);
+ ::qsort (array + start, end - start, sizeof (Type), (hb_compare_func_t) Type::cmp);
}
template <typename T>
}
};
+template <typename Type>
+struct hb_auto_array_t : hb_prealloced_array_t <Type>
+{
+ hb_auto_array_t (void) { hb_prealloced_array_t<Type>::init (); }
+ ~hb_auto_array_t (void) { hb_prealloced_array_t<Type>::finish (); }
+};
+
#define HB_LOCKABLE_SET_INIT {HB_PREALLOCED_ARRAY_INIT}
template <typename item_t, typename lock_t>
};
-
-
-/* Big-endian handling */
-
-static inline uint16_t hb_be_uint16 (const uint16_t v)
-{
- const uint8_t *V = (const uint8_t *) &v;
- return (V[0] << 8) | V[1];
-}
-
-static inline uint16_t hb_uint16_swap (const uint16_t v)
-{
- return (v >> 8) | (v << 8);
-}
-
-static inline uint32_t hb_uint32_swap (const uint32_t v)
-{
- return (hb_uint16_swap (v) << 16) | hb_uint16_swap (v >> 16);
-}
-
-/* Note, of the following macros, uint16_get is the one called many many times.
- * If there is any optimizations to be done, it's in that macro. However, I
- * already confirmed that on my T400 ThinkPad at least, using bswap_16(), which
- * results in a single ror instruction, does NOT speed this up. In fact, it
- * resulted in a minor slowdown. At any rate, note that v may not be correctly
- * aligned, so I think the current implementation is optimal.
- */
-
-#define hb_be_uint16_put(v,V) HB_STMT_START { v[0] = (V>>8); v[1] = (V); } HB_STMT_END
-#define hb_be_uint16_get(v) (uint16_t) ((v[0] << 8) + v[1])
-#define hb_be_uint16_eq(a,b) (a[0] == b[0] && a[1] == b[1])
-
-#define hb_be_uint32_put(v,V) HB_STMT_START { v[0] = (V>>24); v[1] = (V>>16); v[2] = (V>>8); v[3] = (V); } HB_STMT_END
-#define hb_be_uint32_get(v) (uint32_t) ((v[0] << 24) + (v[1] << 16) + (v[2] << 8) + v[3])
-#define hb_be_uint32_eq(a,b) (a[0] == b[0] && a[1] == b[1] && a[2] == b[2] && a[3] == b[3])
-
-#define hb_be_uint24_put(v,V) HB_STMT_START { v[0] = (V>>16); v[1] = (V>>8); v[2] (V); } HB_STMT_END
-#define hb_be_uint24_get(v) (uint32_t) ((v[0] << 16) + (v[1] << 8) + v[2])
-#define hb_be_uint24_eq(a,b) (a[0] == b[0] && a[1] == b[1] && a[2] == b[2])
-
-
/* ASCII tag/character handling */
-static inline unsigned char ISALPHA (unsigned char c)
+static inline bool ISALPHA (unsigned char c)
{ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); }
-static inline unsigned char ISALNUM (unsigned char c)
+static inline bool ISALNUM (unsigned char c)
{ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'); }
+static inline bool ISSPACE (unsigned char c)
+{ return c == ' ' || c =='\f'|| c =='\n'|| c =='\r'|| c =='\t'|| c =='\v'; }
static inline unsigned char TOUPPER (unsigned char c)
{ return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c; }
static inline unsigned char TOLOWER (unsigned char c)
/* Debug */
+/* HB_NDEBUG disables some sanity checks that are very safe to disable and
+ * should be disabled in production systems. If NDEBUG is defined, enable
+ * HB_NDEBUG; but if it's desirable that normal assert()s (which are very
+ * light-weight) to be enabled, then HB_DEBUG can be defined to disable
+ * the costlier checks. */
+#ifdef NDEBUG
+#define HB_NDEBUG
+#endif
+
#ifndef HB_DEBUG
#define HB_DEBUG 0
#endif
return level < max_level;
}
-#define DEBUG_LEVEL(WHAT, LEVEL) (_hb_debug ((LEVEL), HB_DEBUG_##WHAT))
-#define DEBUG(WHAT) (DEBUG_LEVEL (WHAT, 0))
+#define DEBUG_LEVEL_ENABLED(WHAT, LEVEL) (_hb_debug ((LEVEL), HB_DEBUG_##WHAT))
+#define DEBUG_ENABLED(WHAT) (DEBUG_LEVEL_ENABLED (WHAT, 0))
+
+static inline void
+_hb_print_func (const char *func)
+{
+ if (func)
+ {
+ unsigned int func_len = strlen (func);
+ /* Skip "static" */
+ if (0 == strncmp (func, "static ", 7))
+ func += 7;
+ /* Skip "typename" */
+ if (0 == strncmp (func, "typename ", 9))
+ func += 9;
+ /* Skip return type */
+ const char *space = strchr (func, ' ');
+ if (space)
+ func = space + 1;
+ /* Skip parameter list */
+ const char *paren = strchr (func, '(');
+ if (paren)
+ func_len = paren - func;
+ fprintf (stderr, "%.*s", func_len, func);
+ }
+}
template <int max_level> static inline void
_hb_debug_msg_va (const char *what,
unsigned int level,
int level_dir,
const char *message,
+ va_list ap) HB_PRINTF_FUNC(7, 0);
+template <int max_level> static inline void
+_hb_debug_msg_va (const char *what,
+ const void *obj,
+ const char *func,
+ bool indented,
+ unsigned int level,
+ int level_dir,
+ const char *message,
va_list ap)
{
if (!_hb_debug (level, max_level))
#define ULBAR "\342\225\257" /* U+256F BOX DRAWINGS LIGHT ARC UP AND LEFT */
#define LBAR "\342\225\264" /* U+2574 BOX DRAWINGS LIGHT LEFT */
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;
- fprintf (stderr, "%2d %s" VRBAR "%s",
+ fprintf (stderr, "%2u %s" VRBAR "%s",
level,
bars + sizeof (bars) - 1 - MIN ((unsigned int) sizeof (bars), (unsigned int) (sizeof (VBAR) - 1) * level),
level_dir ? (level_dir > 0 ? DLBAR : ULBAR) : LBAR);
} else
fprintf (stderr, " " VRBAR LBAR);
- if (func)
- {
- /* Skip "typename" */
- if (0 == strncmp (func, "typename ", 9))
- func += 9;
- /* Skip return type */
- const char *space = strchr (func, ' ');
- if (space)
- func = space + 1;
- /* Skip parameter list */
- const char *paren = strchr (func, '(');
- unsigned int func_len = paren ? paren - func : strlen (func);
- fprintf (stderr, "%.*s: ", func_len, func);
- }
+ _hb_print_func (func);
if (message)
+ {
+ fprintf (stderr, ": ");
vfprintf (stderr, message, ap);
+ }
fprintf (stderr, "\n");
}
*/
template <typename T>
-struct hb_printer_t {};
+struct hb_printer_t {
+ const char *print (const T&) { return "something"; }
+};
template <>
struct hb_printer_t<bool> {
static inline void _hb_warn_no_return (bool returned)
{
if (unlikely (!returned)) {
- fprintf (stderr, "OUCH, returned with no call to TRACE_RETURN. This is a bug, please report.\n");
+ fprintf (stderr, "OUCH, returned with no call to return_trace(). This is a bug, please report.\n");
}
}
template <>
-inline void _hb_warn_no_return<hb_void_t> (bool returned HB_UNUSED)
+/*static*/ inline void _hb_warn_no_return<hb_void_t> (bool returned HB_UNUSED)
{}
template <int max_level, typename ret_t>
inline ret_t ret (ret_t v, unsigned int line = 0)
{
if (unlikely (returned)) {
- fprintf (stderr, "OUCH, double calls to TRACE_RETURN. This is a bug, please report.\n");
+ fprintf (stderr, "OUCH, double calls to return_trace(). This is a bug, please report.\n");
return v;
}
inline ret_t ret (ret_t v, unsigned int line HB_UNUSED = 0) { return v; }
};
-#define TRACE_RETURN(RET) trace.ret (RET, __LINE__)
+#define return_trace(RET) return trace.ret (RET, __LINE__)
/* Misc */
+template <typename T> class hb_assert_unsigned_t;
+template <> class hb_assert_unsigned_t<unsigned char> {};
+template <> class hb_assert_unsigned_t<unsigned short> {};
+template <> class hb_assert_unsigned_t<unsigned int> {};
+template <> class hb_assert_unsigned_t<unsigned long> {};
-/* Pre-mature optimization:
- * Checks for lo <= u <= hi but with an optimization if lo and hi
- * are only different in a contiguous set of lower-most bits.
- */
template <typename T> static inline bool
hb_in_range (T u, T lo, T hi)
{
- if ( ((lo^hi) & lo) == 0 &&
- ((lo^hi) & hi) == (lo^hi) &&
- ((lo^hi) & ((lo^hi) + 1)) == 0 )
- return (u & ~(lo^hi)) == lo;
- else
- return lo <= u && u <= hi;
+ /* The sizeof() is here to force template instantiation.
+ * I'm sure there are better ways to do this but can't think of
+ * one right now. Declaring a variable won't work as HB_UNUSED
+ * is unusable on some platforms and unused types are less likely
+ * to generate a warning than unused variables. */
+ ASSERT_STATIC (sizeof (hb_assert_unsigned_t<T>) >= 0);
+
+ /* The casts below are important as if T is smaller than int,
+ * the subtract results will become a signed int! */
+ return (T)(u - lo) <= (T)(hi - lo);
+}
+
+template <typename T> static inline bool
+hb_in_ranges (T u, T lo1, T hi1, T lo2, T hi2)
+{
+ return hb_in_range (u, lo1, hi1) || hb_in_range (u, lo2, hi2);
}
template <typename T> static inline bool
}
+/* Enable bitwise ops on enums marked as flags_t */
+/* To my surprise, looks like the function resolver is happy to silently cast
+ * one enum to another... So this doesn't provide the type-checking that I
+ * originally had in mind... :(.
+ *
+ * For MSVC warnings, see: https://github.com/behdad/harfbuzz/pull/163
+ */
+#ifdef _MSC_VER
+# pragma warning(disable:4200)
+# pragma warning(disable:4800)
+#endif
+#define HB_MARK_AS_FLAG_T(T) \
+ extern "C++" { \
+ static inline T operator | (T l, T r) { return T ((unsigned) l | (unsigned) r); } \
+ static inline T operator & (T l, T r) { return T ((unsigned) l & (unsigned) r); } \
+ static inline T operator ^ (T l, T r) { return T ((unsigned) l ^ (unsigned) r); } \
+ static inline T operator ~ (T r) { return T (~(unsigned int) r); } \
+ static inline T& operator |= (T &l, T r) { l = l | r; return l; } \
+ static inline T& operator &= (T& l, T r) { l = l & r; return l; } \
+ static inline T& operator ^= (T& l, T r) { l = l ^ r; return l; } \
+ }
+
+
/* Useful for set-operations on small enums.
* For example, for testing "x ∈ {x1, x2, x3}" use:
- * (FLAG(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
+ * (FLAG_SAFE(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
*/
-#define FLAG(x) (1<<(x))
+#define FLAG(x) (ASSERT_STATIC_EXPR_ZERO ((x) < 32) + (1U << (x)))
+#define FLAG_SAFE(x) (1U << (x))
+#define FLAG_UNSAFE(x) ((x) < 32 ? FLAG_SAFE(x) : 0)
#define FLAG_RANGE(x,y) (ASSERT_STATIC_EXPR_ZERO ((x) < (y)) + FLAG(y+1) - FLAG(x))
-template <typename T, typename T2> inline void
-hb_bubble_sort (T *array, unsigned int len, int(*compar)(const T *, const T *), T2 *array2)
+template <typename T, typename T2> static inline void
+hb_stable_sort (T *array, unsigned int len, int(*compar)(const T *, const T *), T2 *array2)
{
- if (unlikely (!len))
- return;
-
- unsigned int k = len - 1;
- do {
- unsigned int new_k = 0;
-
- for (unsigned int j = 0; j < k; j++)
- if (compar (&array[j], &array[j+1]) > 0)
- {
- {
- T t;
- t = array[j];
- array[j] = array[j + 1];
- array[j + 1] = t;
- }
- if (array2)
- {
- T2 t;
- t = array2[j];
- array2[j] = array2[j + 1];
- array2[j + 1] = t;
- }
-
- new_k = j;
- }
- k = new_k;
- } while (k);
+ for (unsigned int i = 1; i < len; i++)
+ {
+ unsigned int j = i;
+ while (j && compar (&array[j - 1], &array[i]) > 0)
+ j--;
+ if (i == j)
+ continue;
+ /* Move item i to occupy place for item j, shift what's in between. */
+ {
+ T t = array[i];
+ memmove (&array[j + 1], &array[j], (i - j) * sizeof (T));
+ array[j] = t;
+ }
+ if (array2)
+ {
+ T2 t = array2[i];
+ memmove (&array2[j + 1], &array2[j], (i - j) * sizeof (T2));
+ array2[j] = t;
+ }
+ }
}
-template <typename T> inline void
-hb_bubble_sort (T *array, unsigned int len, int(*compar)(const T *, const T *))
+template <typename T> static inline void
+hb_stable_sort (T *array, unsigned int len, int(*compar)(const T *, const T *))
{
- hb_bubble_sort (array, len, compar, (int *) NULL);
+ hb_stable_sort (array, len, compar, (int *) NULL);
}
static inline hb_bool_t
{
/* Pain because we don't know whether s is nul-terminated. */
char buf[64];
- strncpy (buf, s, MIN (ARRAY_LENGTH (buf) - 1, len));
- buf[MIN (ARRAY_LENGTH (buf) - 1, len)] = '\0';
+ len = MIN (ARRAY_LENGTH (buf) - 1, len);
+ strncpy (buf, s, len);
+ buf[len] = '\0';
char *end;
errno = 0;
}
+/* Global runtime options. */
+
+struct hb_options_t
+{
+ unsigned int initialized : 1;
+ unsigned int uniscribe_bug_compatible : 1;
+};
+
+union hb_options_union_t {
+ unsigned int i;
+ hb_options_t opts;
+};
+ASSERT_STATIC (sizeof (int) == sizeof (hb_options_union_t));
+
+HB_INTERNAL void
+_hb_options_init (void);
+
+extern HB_INTERNAL hb_options_union_t _hb_options;
+
+static inline hb_options_t
+hb_options (void)
+{
+ if (unlikely (!_hb_options.i))
+ _hb_options_init ();
+
+ return _hb_options.opts;
+}
+
+/* Size signifying variable-sized array */
+#define VAR 1
+
#endif /* HB_PRIVATE_HH */
projects / platform / upstream / harfbuzz.git / blobdiff