Update harfbuzz-ng to 1a5a91dc0d8bf4b72a2f22dc6300b06ad7000b79.

third_party/harfbuzz-ng/src/hb-private.h

-/*
- * Copyright (C) 2007,2008,2009  Red Hat, Inc.
- *
- *  This is part of HarfBuzz, a text shaping library.
- *
- * Permission is hereby granted, without written agreement and without
- * license or royalty fees, to use, copy, modify, and distribute this
- * software and its documentation for any purpose, provided that the
- * above copyright notice and the following two paragraphs appear in
- * all copies of this software.
- *
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
- * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- *
- * Red Hat Author(s): Behdad Esfahbod
- */
-
-#ifndef HB_PRIVATE_H
-#define HB_PRIVATE_H
-
-#if HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "hb-common.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-/* We only use these two for debug output.  However, the debug code is
- * always seen by the compiler (and optimized out in non-debug builds.
- * If including these becomes a problem, we can start thinking about
- * someway around that. */
-#include <stdio.h>
-#include <errno.h>
-
-HB_BEGIN_DECLS
-
-
-/* Essentials */
-
-#ifndef NULL
-# define NULL ((void *) 0)
-#endif
-
-#undef FALSE
-#define FALSE 0
-
-#undef TRUE
-#define TRUE 1
-
-
-/* Basics */
-
-#undef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-
-#undef MAX
-#define MAX(a,b) ((a) > (b) ? (a) : (b))
-
-#undef  ARRAY_LENGTH
-#define ARRAY_LENGTH(__array) ((signed int) (sizeof (__array) / sizeof (__array[0])))
-
-#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_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
-#define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
-
-
-/* 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))
-#else
-#define HB_PURE_FUNC
-#define HB_CONST_FUNC
-#endif
-#if __GNUC__ >= 4
-#define HB_UNUSED       __attribute__((unused))
-#else
-#define HB_UNUSED
-#endif
-
-#ifndef HB_INTERNAL
-# define HB_INTERNAL __attribute__((__visibility__("hidden")))
-#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
-
-
-/* Return the number of 1 bits in mask. */
-static inline HB_CONST_FUNC unsigned int
-_hb_popcount32 (uint32_t mask)
-{
-#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
-  return __builtin_popcount (mask);
-#else
-  /* "HACKMEM 169" */
-  register uint32_t y;
-  y = (mask >> 1) &033333333333;
-  y = mask - y - ((y >>1) & 033333333333);
-  return (((y + (y >> 3)) & 030707070707) % 077);
-#endif
-}
-
-/* Returns the number of bits needed to store number */
-static inline HB_CONST_FUNC unsigned int
-_hb_bit_storage (unsigned int number)
-{
-#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;
-  while (number) {
-    n_bits++;
-    number >>= 1;
-  }
-  return n_bits;
-#endif
-}
-
-/* Returns the number of zero bits in the least significant side of number */
-static inline HB_CONST_FUNC unsigned int
-_hb_ctz (unsigned int number)
-{
-#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
-  return likely (number) ? __builtin_ctz (number) : 0;
-#else
-  register unsigned int n_bits = 0;
-  if (unlikely (!number)) return 0;
-  while (!(number & 1)) {
-    n_bits++;
-    number >>= 1;
-  }
-  return n_bits;
-#endif
-}
-
-/* Type of bsearch() / qsort() compare function */
-typedef int (*hb_compare_func_t) (const void *, const void *);
-
-
-/* We need external help for these */
-
-#ifdef HAVE_GLIB
-
-#include <glib.h>
-
-typedef int hb_atomic_int_t;
-#define hb_atomic_int_fetch_and_add(AI, V)      g_atomic_int_exchange_and_add (&(AI), V)
-#define hb_atomic_int_get(AI)                   g_atomic_int_get (&(AI))
-#define hb_atomic_int_set(AI, V)                g_atomic_int_set (&(AI), V)
-
-typedef GStaticMutex hb_mutex_t;
-#define HB_MUTEX_INIT                   G_STATIC_MUTEX_INIT
-#define hb_mutex_init(M)                g_static_mutex_init (&M)
-#define hb_mutex_lock(M)                g_static_mutex_lock (&M)
-#define hb_mutex_trylock(M)             g_static_mutex_trylock (&M)
-#define hb_mutex_unlock(M)              g_static_mutex_unlock (&M)
-
-#else
-
-#ifdef _MSC_VER
-#pragma message(__LOC__"Could not find any system to define platform macros, library will NOT be thread-safe")
-#else
-#warning "Could not find any system to define platform macros, library will NOT be thread-safe"
-#endif
-
-typedef int hb_atomic_int_t;
-#define hb_atomic_int_fetch_and_add(AI, V)      ((AI) += (V), (AI) - (V))
-#define hb_atomic_int_get(AI)                   (AI)
-#define hb_atomic_int_set(AI, V)                HB_STMT_START { (AI) = (V); } HB_STMT_END
-
-typedef int hb_mutex_t;
-#define HB_MUTEX_INIT                           0
-#define hb_mutex_init(M)                        HB_STMT_START { (M) = 0; } HB_STMT_END
-#define hb_mutex_lock(M)                        HB_STMT_START { (M) = 1; } HB_STMT_END
-#define hb_mutex_trylock(M)                     ((M) = 1, 1)
-#define hb_mutex_unlock(M)                      HB_STMT_START { (M) = 0; } HB_STMT_END
-
-#endif
-
-
-/* Big-endian handling */
-
-#define hb_be_uint16(v)         ((uint16_t) ((((const uint8_t *)&(v))[0] << 8) + (((const uint8_t *)&(v))[1])))
-
-#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_cmp(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_cmp(a,b)   (a[0] == b[0] && a[1] == b[1] && a[2] == b[2] && a[3] == b[3])
-
-
-/* Debug */
-
-#ifndef HB_DEBUG
-#define HB_DEBUG 0
-#endif
-
-static inline hb_bool_t /* always returns TRUE */
-_hb_trace (const char *what,
-           const char *function,
-           const void *obj,
-           unsigned int depth,
-           unsigned int max_depth)
-{
-  (void) ((depth < max_depth) && fprintf (stderr, "%s(%p) %-*d-> %s\n", what, obj, depth, depth, function));
-  return TRUE;
-}
-
-
-#include "hb-object-private.h"
-
-
-HB_END_DECLS
-
-#endif /* HB_PRIVATE_H */