harfbuzz: check in harfbuzz-ng, add gyp define to use it

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 */