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

third_party/harfbuzz-ng/src/hb-buffer-private.hh

Index: third_party/harfbuzz-ng/src/hb-buffer-private.hh
diff --git a/third_party/harfbuzz-ng/src/hb-buffer-private.hh b/third_party/harfbuzz-ng/src/hb-buffer-private.hh
new file mode 100644
index 0000000000000000000000000000000000000000..a12916513d00b9eec3ee7dee9878b7bc50d1ca7d
--- /dev/null
+++ b/third_party/harfbuzz-ng/src/hb-buffer-private.hh
@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 1998-2004  David Turner and Werner Lemberg
+ * Copyright (C) 2004,2007,2009,2010  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): Owen Taylor, Behdad Esfahbod
+ */
+
+#ifndef HB_BUFFER_PRIVATE_HH
+#define HB_BUFFER_PRIVATE_HH
+
+#include "hb-private.h"
+#include "hb-buffer.h"
+#include "hb-unicode-private.h"
+
+HB_BEGIN_DECLS
+
+
+ASSERT_STATIC (sizeof (hb_glyph_info_t) == 20);
+ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t));
+
+typedef struct _hb_segment_properties_t {
+    hb_direction_t      direction;
+    hb_script_t         script;
+    hb_language_t       language;
+} hb_segment_properties_t;
+
+
+HB_INTERNAL void
+_hb_buffer_swap (hb_buffer_t *buffer);
+
+HB_INTERNAL void
+_hb_buffer_clear_output (hb_buffer_t *buffer);
+
+HB_INTERNAL void
+_hb_buffer_replace_glyphs_be16 (hb_buffer_t *buffer,
+				unsigned int num_in,
+				unsigned int num_out,
+				const uint16_t *glyph_data_be);
+
+HB_INTERNAL void
+_hb_buffer_replace_glyph (hb_buffer_t *buffer,
+			  hb_codepoint_t glyph_index);
+
+HB_INTERNAL void
+_hb_buffer_next_glyph (hb_buffer_t *buffer);
+
+
+HB_INTERNAL void
+_hb_buffer_reset_masks (hb_buffer_t *buffer,
+			hb_mask_t    mask);
+
+HB_INTERNAL void
+_hb_buffer_add_masks (hb_buffer_t *buffer,
+		      hb_mask_t    mask);
+
+HB_INTERNAL void
+_hb_buffer_set_masks (hb_buffer_t *buffer,
+		      hb_mask_t    value,
+		      hb_mask_t    mask,
+		      unsigned int cluster_start,
+		      unsigned int cluster_end);
+
+
+struct _hb_buffer_t {
+  hb_reference_count_t ref_count;
+
+  /* Information about how the text in the buffer should be treated */
+
+  hb_unicode_funcs_t *unicode; /* Unicode functions */
+  hb_segment_properties_t props; /* Script, language, direction */
+
+  /* Buffer contents */
+
+  unsigned int allocated; /* Length of allocated arrays */
+
+  hb_bool_t have_output; /* Whether we have an output buffer going on */
+  hb_bool_t have_positions; /* Whether we have positions */
+  hb_bool_t in_error; /* Allocation failed */
+
+  unsigned int i; /* Cursor into ->info and ->pos arrays */
+  unsigned int len; /* Length of ->info and ->pos arrays */
+  unsigned int out_len; /* Length of ->out array */
+
+  hb_glyph_info_t     *info;
+  hb_glyph_info_t     *out_info;
+  hb_glyph_position_t *pos;
+
+  /* Other stuff */
+
+  unsigned int serial;
+
+
+  /* Methods */
+  inline unsigned int next_serial (void) { return serial++; }
+  inline void swap (void) { _hb_buffer_swap (this); }
+  inline void clear_output (void) { _hb_buffer_clear_output (this); }
+  inline void next_glyph (void) { _hb_buffer_next_glyph (this); }
+  inline void replace_glyphs_be16 (unsigned int num_in,
+				   unsigned int num_out,
+				   const uint16_t *glyph_data_be)
+  { _hb_buffer_replace_glyphs_be16 (this, num_in, num_out, glyph_data_be); }
+  inline void replace_glyph (hb_codepoint_t glyph_index)
+  { _hb_buffer_replace_glyph (this, glyph_index); }
+
+  inline void reset_masks (hb_mask_t mask)
+  {
+    for (unsigned int i = 0; i < len; i++)
+      info[i].mask = mask;
+  }
+  inline void add_masks (hb_mask_t mask)
+  {
+    for (unsigned int i = 0; i < len; i++)
+      info[i].mask |= mask;
+  }
+  inline void set_masks (hb_mask_t value,
+			 hb_mask_t mask,
+			 unsigned int cluster_start,
+			 unsigned int cluster_end)
+  { _hb_buffer_set_masks (this, value, mask, cluster_start, cluster_end); }
+
+};
+
+
+HB_END_DECLS
+
+#endif /* HB_BUFFER_PRIVATE_HH */