1 files changed, 0 insertions, 502 deletions
diff --git a/thirdparty/harfbuzz/src/hb-ot-shape-complex-use.cc b/thirdparty/harfbuzz/src/hb-ot-shape-complex-use.cc
deleted file mode 100644
index 70b637933d..0000000000
--- a/thirdparty/harfbuzz/src/hb-ot-shape-complex-use.cc
+++ /dev/null
@@ -1,502 +0,0 @@
-/*
- * Copyright © 2015  Mozilla Foundation.
- * Copyright © 2015  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
- * 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.
- *
- * Mozilla Author(s): Jonathan Kew
- * Google Author(s): Behdad Esfahbod
- */
-
-#include "hb.hh"
-
-#ifndef HB_NO_OT_SHAPE
-
-#include "hb-ot-shape-complex-use-machine.hh"
-#include "hb-ot-shape-complex-use-table.hh"
-#include "hb-ot-shape-complex-arabic.hh"
-#include "hb-ot-shape-complex-arabic-joining-list.hh"
-#include "hb-ot-shape-complex-vowel-constraints.hh"
-
-
-/*
- * Universal Shaping Engine.
- * https://docs.microsoft.com/en-us/typography/script-development/use
- */
-
-static const hb_tag_t
-use_basic_features[] =
-{
-  /*
-   * Basic features.
-   * These features are applied all at once, before reordering, constrained
-   * to the syllable.
-   */
-  HB_TAG('r','k','r','f'),
-  HB_TAG('a','b','v','f'),
-  HB_TAG('b','l','w','f'),
-  HB_TAG('h','a','l','f'),
-  HB_TAG('p','s','t','f'),
-  HB_TAG('v','a','t','u'),
-  HB_TAG('c','j','c','t'),
-};
-static const hb_tag_t
-use_topographical_features[] =
-{
-  HB_TAG('i','s','o','l'),
-  HB_TAG('i','n','i','t'),
-  HB_TAG('m','e','d','i'),
-  HB_TAG('f','i','n','a'),
-};
-/* Same order as use_topographical_features. */
-enum joining_form_t {
-  JOINING_FORM_ISOL,
-  JOINING_FORM_INIT,
-  JOINING_FORM_MEDI,
-  JOINING_FORM_FINA,
-  _JOINING_FORM_NONE
-};
-static const hb_tag_t
-use_other_features[] =
-{
-  /*
-   * Other features.
-   * These features are applied all at once, after reordering and
-   * clearing syllables.
-   */
-  HB_TAG('a','b','v','s'),
-  HB_TAG('b','l','w','s'),
-  HB_TAG('h','a','l','n'),
-  HB_TAG('p','r','e','s'),
-  HB_TAG('p','s','t','s'),
-};
-
-static void
-setup_syllables_use (const hb_ot_shape_plan_t *plan,
-		     hb_font_t *font,
-		     hb_buffer_t *buffer);
-static void
-record_rphf_use (const hb_ot_shape_plan_t *plan,
-		 hb_font_t *font,
-		 hb_buffer_t *buffer);
-static void
-record_pref_use (const hb_ot_shape_plan_t *plan,
-		 hb_font_t *font,
-		 hb_buffer_t *buffer);
-static void
-reorder_use (const hb_ot_shape_plan_t *plan,
-	     hb_font_t *font,
-	     hb_buffer_t *buffer);
-
-static void
-collect_features_use (hb_ot_shape_planner_t *plan)
-{
-  hb_ot_map_builder_t *map = &plan->map;
-
-  /* Do this before any lookups have been applied. */
-  map->add_gsub_pause (setup_syllables_use);
-
-  /* "Default glyph pre-processing group" */
-  map->enable_feature (HB_TAG('l','o','c','l'));
-  map->enable_feature (HB_TAG('c','c','m','p'));
-  map->enable_feature (HB_TAG('n','u','k','t'));
-  map->enable_feature (HB_TAG('a','k','h','n'), F_MANUAL_ZWJ);
-
-  /* "Reordering group" */
-  map->add_gsub_pause (_hb_clear_substitution_flags);
-  map->add_feature (HB_TAG('r','p','h','f'), F_MANUAL_ZWJ);
-  map->add_gsub_pause (record_rphf_use);
-  map->add_gsub_pause (_hb_clear_substitution_flags);
-  map->enable_feature (HB_TAG('p','r','e','f'), F_MANUAL_ZWJ);
-  map->add_gsub_pause (record_pref_use);
-
-  /* "Orthographic unit shaping group" */
-  for (unsigned int i = 0; i < ARRAY_LENGTH (use_basic_features); i++)
-    map->enable_feature (use_basic_features[i], F_MANUAL_ZWJ);
-
-  map->add_gsub_pause (reorder_use);
-  map->add_gsub_pause (_hb_clear_syllables);
-
-  /* "Topographical features" */
-  for (unsigned int i = 0; i < ARRAY_LENGTH (use_topographical_features); i++)
-    map->add_feature (use_topographical_features[i]);
-  map->add_gsub_pause (nullptr);
-
-  /* "Standard typographic presentation" */
-  for (unsigned int i = 0; i < ARRAY_LENGTH (use_other_features); i++)
-    map->enable_feature (use_other_features[i], F_MANUAL_ZWJ);
-}
-
-struct use_shape_plan_t
-{
-  hb_mask_t rphf_mask;
-
-  arabic_shape_plan_t *arabic_plan;
-};
-
-static void *
-data_create_use (const hb_ot_shape_plan_t *plan)
-{
-  use_shape_plan_t *use_plan = (use_shape_plan_t *) hb_calloc (1, sizeof (use_shape_plan_t));
-  if (unlikely (!use_plan))
-    return nullptr;
-
-  use_plan->rphf_mask = plan->map.get_1_mask (HB_TAG('r','p','h','f'));
-
-  if (has_arabic_joining (plan->props.script))
-  {
-    use_plan->arabic_plan = (arabic_shape_plan_t *) data_create_arabic (plan);
-    if (unlikely (!use_plan->arabic_plan))
-    {
-      hb_free (use_plan);
-      return nullptr;
-    }
-  }
-
-  return use_plan;
-}
-
-static void
-data_destroy_use (void *data)
-{
-  use_shape_plan_t *use_plan = (use_shape_plan_t *) data;
-
-  if (use_plan->arabic_plan)
-    data_destroy_arabic (use_plan->arabic_plan);
-
-  hb_free (data);
-}
-
-static void
-setup_masks_use (const hb_ot_shape_plan_t *plan,
-		 hb_buffer_t              *buffer,
-		 hb_font_t                *font HB_UNUSED)
-{
-  const use_shape_plan_t *use_plan = (const use_shape_plan_t *) plan->data;
-
-  /* Do this before allocating use_category(). */
-  if (use_plan->arabic_plan)
-  {
-    setup_masks_arabic_plan (use_plan->arabic_plan, buffer, plan->props.script);
-  }
-
-  HB_BUFFER_ALLOCATE_VAR (buffer, use_category);
-
-  /* We cannot setup masks here.  We save information about characters
-   * and setup masks later on in a pause-callback. */
-
-  unsigned int count = buffer->len;
-  hb_glyph_info_t *info = buffer->info;
-  for (unsigned int i = 0; i < count; i++)
-    info[i].use_category() = hb_use_get_category (info[i].codepoint);
-}
-
-static void
-setup_rphf_mask (const hb_ot_shape_plan_t *plan,
-		 hb_buffer_t *buffer)
-{
-  const use_shape_plan_t *use_plan = (const use_shape_plan_t *) plan->data;
-
-  hb_mask_t mask = use_plan->rphf_mask;
-  if (!mask) return;
-
-  hb_glyph_info_t *info = buffer->info;
-
-  foreach_syllable (buffer, start, end)
-  {
-    unsigned int limit = info[start].use_category() == USE(R) ? 1 : hb_min (3u, end - start);
-    for (unsigned int i = start; i < start + limit; i++)
-      info[i].mask |= mask;
-  }
-}
-
-static void
-setup_topographical_masks (const hb_ot_shape_plan_t *plan,
-			   hb_buffer_t *buffer)
-{
-  const use_shape_plan_t *use_plan = (const use_shape_plan_t *) plan->data;
-  if (use_plan->arabic_plan)
-    return;
-
-  static_assert ((JOINING_FORM_INIT < 4 && JOINING_FORM_ISOL < 4 && JOINING_FORM_MEDI < 4 && JOINING_FORM_FINA < 4), "");
-  hb_mask_t masks[4], all_masks = 0;
-  for (unsigned int i = 0; i < 4; i++)
-  {
-    masks[i] = plan->map.get_1_mask (use_topographical_features[i]);
-    if (masks[i] == plan->map.get_global_mask ())
-      masks[i] = 0;
-    all_masks |= masks[i];
-  }
-  if (!all_masks)
-    return;
-  hb_mask_t other_masks = ~all_masks;
-
-  unsigned int last_start = 0;
-  joining_form_t last_form = _JOINING_FORM_NONE;
-  hb_glyph_info_t *info = buffer->info;
-  foreach_syllable (buffer, start, end)
-  {
-    use_syllable_type_t syllable_type = (use_syllable_type_t) (info[start].syllable() & 0x0F);
-    switch (syllable_type)
-    {
-      case use_symbol_cluster:
-      case use_hieroglyph_cluster:
-      case use_non_cluster:
-	/* These don't join.  Nothing to do. */
-	last_form = _JOINING_FORM_NONE;
-	break;
-
-      case use_virama_terminated_cluster:
-      case use_sakot_terminated_cluster:
-      case use_standard_cluster:
-      case use_number_joiner_terminated_cluster:
-      case use_numeral_cluster:
-      case use_broken_cluster:
-
-	bool join = last_form == JOINING_FORM_FINA || last_form == JOINING_FORM_ISOL;
-
-	if (join)
-	{
-	  /* Fixup previous syllable's form. */
-	  last_form = last_form == JOINING_FORM_FINA ? JOINING_FORM_MEDI : JOINING_FORM_INIT;
-	  for (unsigned int i = last_start; i < start; i++)
-	    info[i].mask = (info[i].mask & other_masks) | masks[last_form];
-	}
-
-	/* Form for this syllable. */
-	last_form = join ? JOINING_FORM_FINA : JOINING_FORM_ISOL;
-	for (unsigned int i = start; i < end; i++)
-	  info[i].mask = (info[i].mask & other_masks) | masks[last_form];
-
-	break;
-    }
-
-    last_start = start;
-  }
-}
-
-static void
-setup_syllables_use (const hb_ot_shape_plan_t *plan,
-		     hb_font_t *font HB_UNUSED,
-		     hb_buffer_t *buffer)
-{
-  find_syllables_use (buffer);
-  foreach_syllable (buffer, start, end)
-    buffer->unsafe_to_break (start, end);
-  setup_rphf_mask (plan, buffer);
-  setup_topographical_masks (plan, buffer);
-}
-
-static void
-record_rphf_use (const hb_ot_shape_plan_t *plan,
-		 hb_font_t *font HB_UNUSED,
-		 hb_buffer_t *buffer)
-{
-  const use_shape_plan_t *use_plan = (const use_shape_plan_t *) plan->data;
-
-  hb_mask_t mask = use_plan->rphf_mask;
-  if (!mask) return;
-  hb_glyph_info_t *info = buffer->info;
-
-  foreach_syllable (buffer, start, end)
-  {
-    /* Mark a substituted repha as USE(R). */
-    for (unsigned int i = start; i < end && (info[i].mask & mask); i++)
-      if (_hb_glyph_info_substituted (&info[i]))
-      {
-	info[i].use_category() = USE(R);
-	break;
-      }
-  }
-}
-
-static void
-record_pref_use (const hb_ot_shape_plan_t *plan HB_UNUSED,
-		 hb_font_t *font HB_UNUSED,
-		 hb_buffer_t *buffer)
-{
-  hb_glyph_info_t *info = buffer->info;
-
-  foreach_syllable (buffer, start, end)
-  {
-    /* Mark a substituted pref as VPre, as they behave the same way. */
-    for (unsigned int i = start; i < end; i++)
-      if (_hb_glyph_info_substituted (&info[i]))
-      {
-	info[i].use_category() = USE(VPre);
-	break;
-      }
-  }
-}
-
-static inline bool
-is_halant_use (const hb_glyph_info_t &info)
-{
-  return (info.use_category() == USE(H) || info.use_category() == USE(HVM)) &&
-	 !_hb_glyph_info_ligated (&info);
-}
-
-static void
-reorder_syllable_use (hb_buffer_t *buffer, unsigned int start, unsigned int end)
-{
-  use_syllable_type_t syllable_type = (use_syllable_type_t) (buffer->info[start].syllable() & 0x0F);
-  /* Only a few syllable types need reordering. */
-  if (unlikely (!(FLAG_UNSAFE (syllable_type) &
-		  (FLAG (use_virama_terminated_cluster) |
-		   FLAG (use_sakot_terminated_cluster) |
-		   FLAG (use_standard_cluster) |
-		   FLAG (use_broken_cluster) |
-		   0))))
-    return;
-
-  hb_glyph_info_t *info = buffer->info;
-
-#define POST_BASE_FLAGS64 (FLAG64 (USE(FAbv)) | \
-			   FLAG64 (USE(FBlw)) | \
-			   FLAG64 (USE(FPst)) | \
-			   FLAG64 (USE(MAbv)) | \
-			   FLAG64 (USE(MBlw)) | \
-			   FLAG64 (USE(MPst)) | \
-			   FLAG64 (USE(MPre)) | \
-			   FLAG64 (USE(VAbv)) | \
-			   FLAG64 (USE(VBlw)) | \
-			   FLAG64 (USE(VPst)) | \
-			   FLAG64 (USE(VPre)) | \
-			   FLAG64 (USE(VMAbv)) | \
-			   FLAG64 (USE(VMBlw)) | \
-			   FLAG64 (USE(VMPst)) | \
-			   FLAG64 (USE(VMPre)))
-
-  /* Move things forward. */
-  if (info[start].use_category() == USE(R) && end - start > 1)
-  {
-    /* Got a repha.  Reorder it towards the end, but before the first post-base
-     * glyph. */
-    for (unsigned int i = start + 1; i < end; i++)
-    {
-      bool is_post_base_glyph = (FLAG64_UNSAFE (info[i].use_category()) & POST_BASE_FLAGS64) ||
-				is_halant_use (info[i]);
-      if (is_post_base_glyph || i == end - 1)
-      {
-	/* If we hit a post-base glyph, move before it; otherwise move to the
-	 * end. Shift things in between backward. */
-
-	if (is_post_base_glyph)
-	  i--;
-
-	buffer->merge_clusters (start, i + 1);
-	hb_glyph_info_t t = info[start];
-	memmove (&info[start], &info[start + 1], (i - start) * sizeof (info[0]));
-	info[i] = t;
-
-	break;
-      }
-    }
-  }
-
-  /* Move things back. */
-  unsigned int j = start;
-  for (unsigned int i = start; i < end; i++)
-  {
-    uint32_t flag = FLAG_UNSAFE (info[i].use_category());
-    if (is_halant_use (info[i]))
-    {
-      /* If we hit a halant, move after it; otherwise move to the beginning, and
-       * shift things in between forward. */
-      j = i + 1;
-    }
-    else if (((flag) & (FLAG (USE(VPre)) | FLAG (USE(VMPre)))) &&
-	     /* Only move the first component of a MultipleSubst. */
-	     0 == _hb_glyph_info_get_lig_comp (&info[i]) &&
-	     j < i)
-    {
-      buffer->merge_clusters (j, i + 1);
-      hb_glyph_info_t t = info[i];
-      memmove (&info[j + 1], &info[j], (i - j) * sizeof (info[0]));
-      info[j] = t;
-    }
-  }
-}
-
-static void
-reorder_use (const hb_ot_shape_plan_t *plan,
-	     hb_font_t *font,
-	     hb_buffer_t *buffer)
-{
-  if (buffer->message (font, "start reordering USE"))
-  {
-    hb_syllabic_insert_dotted_circles (font, buffer,
-				       use_broken_cluster,
-				       USE(B),
-				       USE(R));
-
-    foreach_syllable (buffer, start, end)
-      reorder_syllable_use (buffer, start, end);
-
-    (void) buffer->message (font, "end reordering USE");
-  }
-
-  HB_BUFFER_DEALLOCATE_VAR (buffer, use_category);
-}
-
-
-static void
-preprocess_text_use (const hb_ot_shape_plan_t *plan,
-		     hb_buffer_t              *buffer,
-		     hb_font_t                *font)
-{
-  _hb_preprocess_text_vowel_constraints (plan, buffer, font);
-}
-
-static bool
-compose_use (const hb_ot_shape_normalize_context_t *c,
-	     hb_codepoint_t  a,
-	     hb_codepoint_t  b,
-	     hb_codepoint_t *ab)
-{
-  /* Avoid recomposing split matras. */
-  if (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (c->unicode->general_category (a)))
-    return false;
-
-  return (bool)c->unicode->compose (a, b, ab);
-}
-
-
-const hb_ot_complex_shaper_t _hb_ot_complex_shaper_use =
-{
-  collect_features_use,
-  nullptr, /* override_features */
-  data_create_use,
-  data_destroy_use,
-  preprocess_text_use,
-  nullptr, /* postprocess_glyphs */
-  HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT,
-  nullptr, /* decompose */
-  compose_use,
-  setup_masks_use,
-  HB_TAG_NONE, /* gpos_tag */
-  nullptr, /* reorder_marks */
-  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY,
-  false, /* fallback_position */
-};
-
-
-#endif