#include "hb-font-private.hh"
#include "hb-buffer-private.hh"
-#include "hb-set-private.hh"
+#include "hb-set-digest-private.hh"
#include "hb-open-type-private.hh"
struct hb_ot_layout_lookup_accelerator_t;
namespace OT {
- struct hb_apply_context_t;
+ struct hb_ot_apply_context_t;
struct SubstLookup;
}
HB_INTERNAL void
-hb_ot_layout_substitute_lookup (OT::hb_apply_context_t *c,
+hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c,
const OT::SubstLookup &lookup,
const hb_ot_layout_lookup_accelerator_t &accel);
*/
namespace OT {
+ struct BASE;
+ struct COLR;
+ struct CPAL;
struct GDEF;
struct GSUB;
struct GPOS;
struct avar;
}
+namespace AAT {
+ struct ankr;
+ struct kerx;
+ struct morx;
+ struct trak;
+}
+
struct hb_ot_layout_lookup_accelerator_t
{
template <typename TLookup>
const struct OT::GPOS *gpos;
/* TODO Move the following out of this struct. */
+ OT::hb_lazy_table_loader_t<struct OT::BASE> base;
+ OT::hb_lazy_table_loader_t<struct OT::COLR> colr;
+ OT::hb_lazy_table_loader_t<struct OT::CPAL> cpal;
OT::hb_lazy_table_loader_t<struct OT::MATH> math;
OT::hb_lazy_table_loader_t<struct OT::fvar> fvar;
OT::hb_lazy_table_loader_t<struct OT::avar> avar;
+ OT::hb_lazy_table_loader_t<struct AAT::ankr> ankr;
+ OT::hb_lazy_table_loader_t<struct AAT::kerx> kerx;
+ OT::hb_lazy_table_loader_t<struct AAT::morx> morx;
+ OT::hb_lazy_table_loader_t<struct AAT::trak> trak;
unsigned int gsub_lookup_count;
unsigned int gpos_lookup_count;
#define syllable() var1.u8[3] /* GSUB/GPOS shaping boundaries */
-/* loop over syllables */
-
+/* Loop over syllables. Based on foreach_cluster(). */
#define foreach_syllable(buffer, start, end) \
for (unsigned int \
_count = buffer->len, \
* - General_Category: 5 bits.
* - A bit each for:
* * Is it Default_Ignorable(); we have a modified Default_Ignorable().
- * * Whether it's one of the three Mongolian Free Variation Selectors.
+ * * Whether it's one of the three Mongolian Free Variation Selectors,
+ * CGJ, or other characters that are hidden but should not be ignored
+ * like most other Default_Ignorable()s do during matching.
* * One free bit right now.
*
* The high-byte has different meanings, switched by the Gen-Cat:
enum hb_unicode_props_flags_t {
UPROPS_MASK_GEN_CAT = 0x001Fu,
UPROPS_MASK_IGNORABLE = 0x0020u,
- UPROPS_MASK_FVS = 0x0040u, /* MONGOLIAN FREE VARIATION SELECTOR 1..3 */
+ UPROPS_MASK_HIDDEN = 0x0040u, /* MONGOLIAN FREE VARIATION SELECTOR 1..3,
+ * or TAG characters */
/* If GEN_CAT=FORMAT, top byte masks: */
UPROPS_MASK_Cf_ZWJ = 0x0100u,
buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_DEFAULT_IGNORABLES;
props |= UPROPS_MASK_IGNORABLE;
if (u == 0x200Cu) props |= UPROPS_MASK_Cf_ZWNJ;
- if (u == 0x200Du) props |= UPROPS_MASK_Cf_ZWJ;
+ else if (u == 0x200Du) props |= UPROPS_MASK_Cf_ZWJ;
/* Mongolian Free Variation Selectors need to be remembered
* because although we need to hide them like default-ignorables,
* they need to non-ignorable during shaping. This is similar to
* what we do for joiners in Indic-like shapers, but since the
* FVSes are GC=Mn, we have use a separate bit to remember them.
* Fixes:
- * https://github.com/behdad/harfbuzz/issues/234
- */
- if (unlikely (hb_in_range (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_FVS;
+ * https://github.com/harfbuzz/harfbuzz/issues/234 */
+ else if (unlikely (hb_in_range (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN;
+ /* TAG characters need similar treatment. Fixes:
+ * https://github.com/harfbuzz/harfbuzz/issues/463 */
+ else if (unlikely (hb_in_range (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN;
+ /* COMBINING GRAPHEME JOINER should not be skipped; at least some times.
+ * https://github.com/harfbuzz/harfbuzz/issues/554 */
+ else if (unlikely (u == 0x034Fu))
+ {
+ buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_CGJ;
+ props |= UPROPS_MASK_HIDDEN;
+ }
}
else if (unlikely (HB_UNICODE_GENERAL_CATEGORY_IS_NON_ENCLOSING_MARK_OR_MODIFIER_SYMBOL (gen_cat)))
{
/* Recategorize emoji skin-tone modifiers as Unicode mark, so they
* behave correctly in non-native directionality. They originally
* are MODIFIER_SYMBOL. Fixes:
- * https://github.com/behdad/harfbuzz/issues/169
+ * https://github.com/harfbuzz/harfbuzz/issues/169
*/
if (unlikely (hb_in_range (u, 0x1F3FBu, 0x1F3FFu)))
{
return _hb_glyph_info_is_unicode_mark (info) ? info->unicode_props()>>8 : 0;
}
+
+/* Loop over grapheme. Based on foreach_cluster(). */
+#define foreach_grapheme(buffer, start, end) \
+ for (unsigned int \
+ _count = buffer->len, \
+ start = 0, end = _count ? _next_grapheme (buffer, 0) : 0; \
+ start < _count; \
+ start = end, end = _next_grapheme (buffer, start))
+
+static inline unsigned int
+_next_grapheme (hb_buffer_t *buffer, unsigned int start)
+{
+ hb_glyph_info_t *info = buffer->info;
+ unsigned int count = buffer->len;
+
+ while (++start < count && _hb_glyph_info_is_unicode_mark (&info[start]))
+ ;
+
+ return start;
+}
+
+
+#define info_cc(info) (_hb_glyph_info_get_modified_combining_class (&(info)))
+
static inline bool
_hb_glyph_info_is_unicode_space (const hb_glyph_info_t *info)
{
!_hb_glyph_info_ligated (info);
}
static inline hb_bool_t
-_hb_glyph_info_is_default_ignorable_and_not_fvs (const hb_glyph_info_t *info)
+_hb_glyph_info_is_default_ignorable_and_not_hidden (const hb_glyph_info_t *info)
{
- return ((info->unicode_props() & (UPROPS_MASK_IGNORABLE|UPROPS_MASK_FVS))
+ return ((info->unicode_props() & (UPROPS_MASK_IGNORABLE|UPROPS_MASK_HIDDEN))
== UPROPS_MASK_IGNORABLE) &&
!_hb_glyph_info_ligated (info);
}
+static inline void
+_hb_glyph_info_unhide (hb_glyph_info_t *info)
+{
+ info->unicode_props() &= ~ UPROPS_MASK_HIDDEN;
+}
static inline bool
_hb_glyph_info_is_unicode_format (const hb_glyph_info_t *info)
projects / platform / upstream / harfbuzz.git / blobdiff