Roll HarfBuzz to 1.4.6

third_party/harfbuzz-ng/src/hb-ot-shape.cc

 /*
  * Copyright © 2009,2010  Red Hat, Inc.
  * Copyright © 2010,2011,2012  Google, 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
@@ skipping 110 matching lines @@
                       (feature->start == 0 && feature->end == (unsigned int) -1) ?
                        F_GLOBAL : F_NONE);
   }
 }
 
 
 /*
  * shaper face data
  */
 
+HB_SHAPER_DATA_ENSURE_DEFINE(ot, face)
+
 hb_ot_shaper_face_data_t *
 _hb_ot_shaper_face_data_create (hb_face_t *face)
 {
   return _hb_ot_layout_create (face);
 }
 
 void
 _hb_ot_shaper_face_data_destroy (hb_ot_shaper_face_data_t *data)
 {
   _hb_ot_layout_destroy (data);
 }
 
 
 /*
  * shaper font data
  */
 
+HB_SHAPER_DATA_ENSURE_DEFINE(ot, font)
+
 struct hb_ot_shaper_font_data_t {};
 
 hb_ot_shaper_font_data_t *
 _hb_ot_shaper_font_data_create (hb_font_t *font HB_UNUSED)
 {
   return (hb_ot_shaper_font_data_t *) HB_SHAPER_DATA_SUCCEEDED;
 }
 
 void
 _hb_ot_shaper_font_data_destroy (hb_ot_shaper_font_data_t *data)
@@ skipping 209 matching lines @@
   {
     pre_mask = c->plan->numr_mask | c->plan->frac_mask;
     post_mask = c->plan->frac_mask | c->plan->dnom_mask;
   }
   else
   {
     pre_mask = c->plan->frac_mask | c->plan->dnom_mask;
     post_mask = c->plan->numr_mask | c->plan->frac_mask;
   }
 
-  /* TODO look in pre/post context text also. */
   unsigned int count = buffer->len;
   hb_glyph_info_t *info = buffer->info;
   for (unsigned int i = 0; i < count; i++)
   {
     if (info[i].codepoint == 0x2044u) /* FRACTION SLASH */
     {
       unsigned int start = i, end = i + 1;
       while (start &&
              _hb_glyph_info_get_general_category (&info[start - 1]) ==
              HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER)
@@ skipping 525 matching lines @@
   hb_set_t copy;
   copy.init ();
   do {
     copy.set (glyphs);
     for (hb_codepoint_t lookup_index = -1; hb_set_next (&lookups, &lookup_index);)
       hb_ot_layout_lookup_substitute_closure (font->face, lookup_index, glyphs);
   } while (!copy.is_equal (glyphs));
 
   hb_shape_plan_destroy (shape_plan);
 }