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[>64k:layout] Support HBUINT24 in skippy_iter

This commit is contained in:
Behdad Esfahbod 2022-07-06 17:37:11 -06:00
parent 1ef67a6d66
commit 429b387a6f
1 changed files with 53 additions and 8 deletions
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61
src/hb-ot-layout-gsubgpos.hh
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@ -476,7 +476,10 @@ struct hb_ot_apply_context_t :
void init (hb_ot_apply_context_t *c_, bool context_match = false)
{
c = c_;
match_glyph_data = nullptr;
match_glyph_data16 = nullptr;
#ifndef HB_NO_BORING_EXPANSION
match_glyph_data24 = nullptr;
#endif
matcher.set_match_func (nullptr, nullptr);
matcher.set_lookup_props (c->lookup_props);
/* Ignore ZWNJ if we are matching GPOS, or matching GSUB context and asked to. */
@ -497,8 +500,18 @@ struct hb_ot_apply_context_t :
}
void set_glyph_data (const HBUINT16 glyph_data[])
{
match_glyph_data = glyph_data;
match_glyph_data16 = glyph_data;
#ifndef HB_NO_BORING_EXPANSION
match_glyph_data24 = nullptr;
#endif
}
#ifndef HB_NO_BORING_EXPANSION
void set_glyph_data (const HBUINT24 glyph_data[])
{
match_glyph_data16 = nullptr;
match_glyph_data24 = glyph_data;
}
#endif
void reset (unsigned int start_index_,
unsigned int num_items_)
@ -512,7 +525,7 @@ struct hb_ot_apply_context_t :
void reject ()
{
num_items++;
if (match_glyph_data) match_glyph_data--;
backup_glyph_data ();
}
matcher_t::may_skip_t
@ -531,13 +544,13 @@ struct hb_ot_apply_context_t :
if (unlikely (skip == matcher_t::SKIP_YES))
continue;
matcher_t::may_match_t match = matcher.may_match (info, match_glyph_data ? *match_glyph_data : 0);
matcher_t::may_match_t match = matcher.may_match (info, get_glyph_data ());
if (match == matcher_t::MATCH_YES ||
(match == matcher_t::MATCH_MAYBE &&
skip == matcher_t::SKIP_NO))
{
num_items--;
if (match_glyph_data) match_glyph_data++;
advance_glyph_data ();
return true;
}
@ -564,13 +577,13 @@ struct hb_ot_apply_context_t :
if (unlikely (skip == matcher_t::SKIP_YES))
continue;
matcher_t::may_match_t match = matcher.may_match (info, match_glyph_data ? *match_glyph_data : 0);
matcher_t::may_match_t match = matcher.may_match (info, get_glyph_data ());
if (match == matcher_t::MATCH_YES ||
(match == matcher_t::MATCH_MAYBE &&
skip == matcher_t::SKIP_NO))
{
num_items--;
if (match_glyph_data) match_glyph_data++;
advance_glyph_data ();
return true;
}
@ -586,11 +599,43 @@ struct hb_ot_apply_context_t :
return false;
}
hb_codepoint_t
get_glyph_data ()
{
if (match_glyph_data16) return *match_glyph_data16;
#ifndef HB_NO_BORING_EXPANSION
else
if (match_glyph_data24) return *match_glyph_data24;
#endif
return 0;
}
void
advance_glyph_data ()
{
if (match_glyph_data16) match_glyph_data16++;
#ifndef HB_NO_BORING_EXPANSION
else
if (match_glyph_data24) match_glyph_data24++;
#endif
}
void
backup_glyph_data ()
{
if (match_glyph_data16) match_glyph_data16--;
#ifndef HB_NO_BORING_EXPANSION
else
if (match_glyph_data24) match_glyph_data24--;
#endif
}
unsigned int idx;
protected:
hb_ot_apply_context_t *c;
matcher_t matcher;
const HBUINT16 *match_glyph_data;
const HBUINT16 *match_glyph_data16;
#ifndef HB_NO_BORING_EXPANSION
const HBUINT24 *match_glyph_data24;
#endif
unsigned int num_items;
unsigned int end;