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-rw-r--r--src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-use.cc328
1 files changed, 159 insertions, 169 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-use.cc b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-use.cc
index 62acd697bd..10f5822c00 100644
--- a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-use.cc
+++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-use.cc
@@ -26,8 +26,13 @@
* Google Author(s): Behdad Esfahbod
*/
-#include "hb-ot-shape-complex-use-private.hh"
-#include "hb-ot-shape-complex-arabic-private.hh"
+#include "hb.hh"
+
+#ifndef HB_NO_OT_SHAPE
+
+#include "hb-ot-shape-complex-use.hh"
+#include "hb-ot-shape-complex-arabic.hh"
+#include "hb-ot-shape-complex-vowel-constraints.hh"
/* buffer var allocations */
#define use_category() complex_var_u8_0()
@@ -35,11 +40,11 @@
/*
* Universal Shaping Engine.
- * https://www.microsoft.com/typography/OpenTypeDev/USE/intro.htm
+ * https://docs.microsoft.com/en-us/typography/script-development/use
*/
static const hb_tag_t
-basic_features[] =
+use_basic_features[] =
{
/*
* Basic features.
@@ -54,64 +59,52 @@ basic_features[] =
HB_TAG('c','j','c','t'),
};
static const hb_tag_t
-arabic_features[] =
+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'),
- /* The spec doesn't specify these but we apply anyway, since our Arabic shaper
- * does. These are only used in Syriac spec. */
- HB_TAG('m','e','d','2'),
- HB_TAG('f','i','n','2'),
- HB_TAG('f','i','n','3'),
};
-/* Same order as arabic_features. Don't need Syriac stuff.*/
+/* Same order as use_topographical_features. */
enum joining_form_t {
- ISOL,
- INIT,
- MEDI,
- FINA,
- _NONE
+ USE_ISOL,
+ USE_INIT,
+ USE_MEDI,
+ USE_FINA,
+ _USE_NONE
};
static const hb_tag_t
-other_features[] =
+use_other_features[] =
{
/*
* Other features.
- * These features are applied all at once, after reordering.
+ * 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'),
- /* Positioning features, though we don't care about the types. */
- HB_TAG('d','i','s','t'),
- HB_TAG('a','b','v','m'),
- HB_TAG('b','l','w','m'),
};
static void
-setup_syllables (const hb_ot_shape_plan_t *plan,
+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
-clear_substitution_flags (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer);
-static void
-record_rphf (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer);
+record_pref_use (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font,
+ hb_buffer_t *buffer);
static void
-record_pref (const hb_ot_shape_plan_t *plan,
+reorder_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
-static void
-reorder (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)
@@ -119,42 +112,41 @@ 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);
+ map->add_gsub_pause (setup_syllables_use);
/* "Default glyph pre-processing group" */
- map->add_global_bool_feature (HB_TAG('l','o','c','l'));
- map->add_global_bool_feature (HB_TAG('c','c','m','p'));
- map->add_global_bool_feature (HB_TAG('n','u','k','t'));
- map->add_global_bool_feature (HB_TAG('a','k','h','n'));
+ 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 (clear_substitution_flags);
- map->add_feature (HB_TAG('r','p','h','f'), 1, F_MANUAL_ZWJ);
- map->add_gsub_pause (record_rphf);
- map->add_gsub_pause (clear_substitution_flags);
- map->add_feature (HB_TAG('p','r','e','f'), 1, F_GLOBAL | F_MANUAL_ZWJ);
- map->add_gsub_pause (record_pref);
+ 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 (basic_features); i++)
- map->add_feature (basic_features[i], 1, F_GLOBAL | F_MANUAL_ZWJ);
+ 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);
+ map->add_gsub_pause (reorder_use);
+ map->add_gsub_pause (_hb_clear_syllables);
/* "Topographical features" */
- for (unsigned int i = 0; i < ARRAY_LENGTH (arabic_features); i++)
- map->add_feature (arabic_features[i], 1, F_NONE);
+ 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" and "Positional feature application" */
- for (unsigned int i = 0; i < ARRAY_LENGTH (other_features); i++)
- map->add_feature (other_features[i], 1, F_GLOBAL | F_MANUAL_ZWJ);
+ /* "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
{
- ASSERT_POD ();
-
hb_mask_t rphf_mask;
arabic_shape_plan_t *arabic_plan;
@@ -227,15 +219,16 @@ data_destroy_use (void *data)
free (data);
}
-enum syllable_type_t {
- independent_cluster,
- virama_terminated_cluster,
- standard_cluster,
- number_joiner_terminated_cluster,
- numeral_cluster,
- symbol_cluster,
- broken_cluster,
- non_cluster,
+enum use_syllable_type_t {
+ use_independent_cluster,
+ use_virama_terminated_cluster,
+ use_sakot_terminated_cluster,
+ use_standard_cluster,
+ use_number_joiner_terminated_cluster,
+ use_numeral_cluster,
+ use_symbol_cluster,
+ use_broken_cluster,
+ use_non_cluster,
};
#include "hb-ot-shape-complex-use-machine.hh"
@@ -262,7 +255,7 @@ setup_masks_use (const hb_ot_shape_plan_t *plan,
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_categories (info[i].codepoint);
+ info[i].use_category() = hb_use_get_category (info[i].codepoint);
}
static void
@@ -278,7 +271,7 @@ setup_rphf_mask (const hb_ot_shape_plan_t *plan,
foreach_syllable (buffer, start, end)
{
- unsigned int limit = info[start].use_category() == USE_R ? 1 : MIN (3u, end - start);
+ 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;
}
@@ -292,11 +285,11 @@ setup_topographical_masks (const hb_ot_shape_plan_t *plan,
if (use_plan->arabic_plan)
return;
- static_assert ((INIT < 4 && ISOL < 4 && MEDI < 4 && FINA < 4), "");
+ static_assert ((USE_INIT < 4 && USE_ISOL < 4 && USE_MEDI < 4 && USE_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 (arabic_features[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];
@@ -306,38 +299,39 @@ setup_topographical_masks (const hb_ot_shape_plan_t *plan,
hb_mask_t other_masks = ~all_masks;
unsigned int last_start = 0;
- joining_form_t last_form = _NONE;
+ joining_form_t last_form = _USE_NONE;
hb_glyph_info_t *info = buffer->info;
foreach_syllable (buffer, start, end)
{
- syllable_type_t syllable_type = (syllable_type_t) (info[start].syllable() & 0x0F);
+ use_syllable_type_t syllable_type = (use_syllable_type_t) (info[start].syllable() & 0x0F);
switch (syllable_type)
{
- case independent_cluster:
- case symbol_cluster:
- case non_cluster:
+ case use_independent_cluster:
+ case use_symbol_cluster:
+ case use_non_cluster:
/* These don't join. Nothing to do. */
- last_form = _NONE;
+ last_form = _USE_NONE;
break;
- case virama_terminated_cluster:
- case standard_cluster:
- case number_joiner_terminated_cluster:
- case numeral_cluster:
- case broken_cluster:
+ 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 == FINA || last_form == ISOL;
+ bool join = last_form == USE_FINA || last_form == USE_ISOL;
if (join)
{
/* Fixup previous syllable's form. */
- last_form = last_form == FINA ? MEDI : INIT;
+ last_form = last_form == USE_FINA ? USE_MEDI : USE_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 ? FINA : ISOL;
+ last_form = join ? USE_FINA : USE_ISOL;
for (unsigned int i = start; i < end; i++)
info[i].mask = (info[i].mask & other_masks) | masks[last_form];
@@ -349,11 +343,11 @@ setup_topographical_masks (const hb_ot_shape_plan_t *plan,
}
static void
-setup_syllables (const hb_ot_shape_plan_t *plan,
- hb_font_t *font HB_UNUSED,
- hb_buffer_t *buffer)
+setup_syllables_use (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font HB_UNUSED,
+ hb_buffer_t *buffer)
{
- find_syllables (buffer);
+ find_syllables_use (buffer);
foreach_syllable (buffer, start, end)
buffer->unsafe_to_break (start, end);
setup_rphf_mask (plan, buffer);
@@ -361,20 +355,9 @@ setup_syllables (const hb_ot_shape_plan_t *plan,
}
static void
-clear_substitution_flags (const hb_ot_shape_plan_t *plan,
- hb_font_t *font HB_UNUSED,
- hb_buffer_t *buffer)
-{
- hb_glyph_info_t *info = buffer->info;
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- _hb_glyph_info_clear_substituted (&info[i]);
-}
-
-static void
-record_rphf (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer)
+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;
@@ -395,9 +378,9 @@ record_rphf (const hb_ot_shape_plan_t *plan,
}
static void
-record_pref (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer)
+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;
@@ -414,38 +397,59 @@ record_pref (const hb_ot_shape_plan_t *plan,
}
static inline bool
-is_halant (const hb_glyph_info_t &info)
+is_halant_use (const hb_glyph_info_t &info)
{
- return info.use_category() == USE_H && !_hb_glyph_info_ligated (&info);
+ return (info.use_category() == USE_H || info.use_category() == USE_HVM) &&
+ !_hb_glyph_info_ligated (&info);
}
static void
-reorder_syllable (hb_buffer_t *buffer, unsigned int start, unsigned int end)
+reorder_syllable_use (hb_buffer_t *buffer, unsigned int start, unsigned int end)
{
- syllable_type_t syllable_type = (syllable_type_t) (buffer->info[start].syllable() & 0x0F);
+ 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 (virama_terminated_cluster) |
- FLAG (standard_cluster) |
- FLAG (broken_cluster) |
+ (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 BASE_FLAGS (FLAG (USE_B) | FLAG (USE_GB))
+#define POST_BASE_FLAGS64 (FLAG64 (USE_FM) | \
+ 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 to after first base, before first halant. */
+ /* Got a repha. Reorder it towards the end, but before the first post-base
+ * glyph. */
for (unsigned int i = start + 1; i < end; i++)
- if ((FLAG_UNSAFE (info[i].use_category()) & (BASE_FLAGS)) || is_halant (info[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 halant, move before it; otherwise it's a base: move to it's
- * place, and shift things in between backward. */
+ /* If we hit a post-base glyph, move before it; otherwise move to the
+ * end. Shift things in between backward. */
- if (is_halant (info[i]))
+ if (is_post_base_glyph)
i--;
buffer->merge_clusters (start, i + 1);
@@ -455,21 +459,19 @@ reorder_syllable (hb_buffer_t *buffer, unsigned int start, unsigned int end)
break;
}
+ }
}
/* Move things back. */
- unsigned int j = end;
+ unsigned int j = start;
for (unsigned int i = start; i < end; i++)
{
uint32_t flag = FLAG_UNSAFE (info[i].use_category());
- if ((flag & (BASE_FLAGS)) || is_halant (info[i]))
+ if (is_halant_use (info[i]))
{
- /* If we hit a halant, move after it; otherwise it's a base: move to it's
- * place, and shift things in between backward. */
- if (is_halant (info[i]))
- j = i + 1;
- else
- j = 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. */
@@ -485,16 +487,20 @@ reorder_syllable (hb_buffer_t *buffer, unsigned int start, unsigned int end)
}
static inline void
-insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED,
- hb_font_t *font,
- hb_buffer_t *buffer)
+insert_dotted_circles_use (const hb_ot_shape_plan_t *plan HB_UNUSED,
+ hb_font_t *font,
+ hb_buffer_t *buffer)
{
- /* Note: This loop is extra overhead, but should not be measurable. */
+ if (unlikely (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE))
+ return;
+
+ /* Note: This loop is extra overhead, but should not be measurable.
+ * TODO Use a buffer scratch flag to remove the loop. */
bool has_broken_syllables = false;
unsigned int count = buffer->len;
hb_glyph_info_t *info = buffer->info;
for (unsigned int i = 0; i < count; i++)
- if ((info[i].syllable() & 0x0F) == broken_cluster)
+ if ((info[i].syllable() & 0x0F) == use_broken_cluster)
{
has_broken_syllables = true;
break;
@@ -505,17 +511,17 @@ insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED,
hb_glyph_info_t dottedcircle = {0};
if (!font->get_nominal_glyph (0x25CCu, &dottedcircle.codepoint))
return;
- dottedcircle.use_category() = hb_use_get_categories (0x25CC);
+ dottedcircle.use_category() = hb_use_get_category (0x25CC);
buffer->clear_output ();
buffer->idx = 0;
unsigned int last_syllable = 0;
- while (buffer->idx < buffer->len && !buffer->in_error)
+ while (buffer->idx < buffer->len && buffer->successful)
{
unsigned int syllable = buffer->cur().syllable();
- syllable_type_t syllable_type = (syllable_type_t) (syllable & 0x0F);
- if (unlikely (last_syllable != syllable && syllable_type == broken_cluster))
+ use_syllable_type_t syllable_type = (use_syllable_type_t) (syllable & 0x0F);
+ if (unlikely (last_syllable != syllable && syllable_type == use_broken_cluster))
{
last_syllable = syllable;
@@ -523,60 +529,41 @@ insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED,
ginfo.cluster = buffer->cur().cluster;
ginfo.mask = buffer->cur().mask;
ginfo.syllable() = buffer->cur().syllable();
- /* TODO Set glyph_props? */
/* Insert dottedcircle after possible Repha. */
- while (buffer->idx < buffer->len && !buffer->in_error &&
+ while (buffer->idx < buffer->len && buffer->successful &&
last_syllable == buffer->cur().syllable() &&
buffer->cur().use_category() == USE_R)
- buffer->next_glyph ();
+ buffer->next_glyph ();
buffer->output_info (ginfo);
}
else
buffer->next_glyph ();
}
-
buffer->swap_buffers ();
}
static void
-reorder (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer)
+reorder_use (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font,
+ hb_buffer_t *buffer)
{
- insert_dotted_circles (plan, font, buffer);
-
- hb_glyph_info_t *info = buffer->info;
+ insert_dotted_circles_use (plan, font, buffer);
foreach_syllable (buffer, start, end)
- reorder_syllable (buffer, start, end);
-
- /* Zero syllables now... */
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- info[i].syllable() = 0;
+ reorder_syllable_use (buffer, start, end);
HB_BUFFER_DEALLOCATE_VAR (buffer, use_category);
}
-static bool
-decompose_use (const hb_ot_shape_normalize_context_t *c,
- hb_codepoint_t ab,
- hb_codepoint_t *a,
- hb_codepoint_t *b)
-{
- switch (ab)
- {
- /* Chakma:
- * Special case where the Unicode decomp gives matras in the wrong order
- * for cluster validation.
- */
- case 0x1112Eu : *a = 0x11127u; *b= 0x11131u; return true;
- case 0x1112Fu : *a = 0x11127u; *b= 0x11132u; return true;
- }
- return (bool) c->unicode->decompose (ab, a, b);
+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
@@ -599,14 +586,17 @@ const hb_ot_complex_shaper_t _hb_ot_complex_shaper_use =
nullptr, /* override_features */
data_create_use,
data_destroy_use,
- nullptr, /* preprocess_text */
+ preprocess_text_use,
nullptr, /* postprocess_glyphs */
HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT,
- decompose_use,
+ nullptr, /* decompose */
compose_use,
setup_masks_use,
- nullptr, /* disable_otl */
+ HB_TAG_NONE, /* gpos_tag */
nullptr, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY,
false, /* fallback_position */
};
+
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-13 12:29:46 +0000