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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/OT/Layout/GSUB/SingleSubstFormat1.hh122
1 files changed, 122 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/OT/Layout/GSUB/SingleSubstFormat1.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/OT/Layout/GSUB/SingleSubstFormat1.hh
new file mode 100644
index 00000000000..3c6b2954cec
--- /dev/null
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/OT/Layout/GSUB/SingleSubstFormat1.hh
@@ -0,0 +1,122 @@
+#ifndef OT_LAYOUT_GSUB_SINGLESUBSTFORMAT1_HH
+#define OT_LAYOUT_GSUB_SINGLESUBSTFORMAT1_HH
+
+#include "Common.hh"
+
+namespace OT {
+namespace Layout {
+namespace GSUB {
+
+struct SingleSubstFormat1
+{
+ protected:
+ HBUINT16 format; /* Format identifier--format = 1 */
+ Offset16To<Coverage>
+ coverage; /* Offset to Coverage table--from
+ * beginning of Substitution table */
+ HBUINT16 deltaGlyphID; /* Add to original GlyphID to get
+ * substitute GlyphID, modulo 0x10000 */
+
+ public:
+ DEFINE_SIZE_STATIC (6);
+
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (coverage.sanitize (c, this) && deltaGlyphID.sanitize (c));
+ }
+
+ bool intersects (const hb_set_t *glyphs) const
+ { return (this+coverage).intersects (glyphs); }
+
+ bool may_have_non_1to1 () const
+ { return false; }
+
+ void closure (hb_closure_context_t *c) const
+ {
+ unsigned d = deltaGlyphID;
+
+ + hb_iter (this+coverage)
+ | hb_filter (c->parent_active_glyphs ())
+ | hb_map ([d] (hb_codepoint_t g) { return (g + d) & 0xFFFFu; })
+ | hb_sink (c->output)
+ ;
+
+ }
+
+ void closure_lookups (hb_closure_lookups_context_t *c) const {}
+
+ void collect_glyphs (hb_collect_glyphs_context_t *c) const
+ {
+ if (unlikely (!(this+coverage).collect_coverage (c->input))) return;
+ unsigned d = deltaGlyphID;
+ + hb_iter (this+coverage)
+ | hb_map ([d] (hb_codepoint_t g) { return (g + d) & 0xFFFFu; })
+ | hb_sink (c->output)
+ ;
+ }
+
+ const Coverage &get_coverage () const { return this+coverage; }
+
+ bool would_apply (hb_would_apply_context_t *c) const
+ { return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; }
+
+ bool apply (hb_ot_apply_context_t *c) const
+ {
+ TRACE_APPLY (this);
+ hb_codepoint_t glyph_id = c->buffer->cur().codepoint;
+ unsigned int index = (this+coverage).get_coverage (glyph_id);
+ if (likely (index == NOT_COVERED)) return_trace (false);
+
+ /* According to the Adobe Annotated OpenType Suite, result is always
+ * limited to 16bit. */
+ glyph_id = (glyph_id + deltaGlyphID) & 0xFFFFu;
+ c->replace_glyph (glyph_id);
+
+ return_trace (true);
+ }
+
+ template<typename Iterator,
+ hb_requires (hb_is_sorted_source_of (Iterator, hb_codepoint_t))>
+ bool serialize (hb_serialize_context_t *c,
+ Iterator glyphs,
+ unsigned delta)
+ {
+ TRACE_SERIALIZE (this);
+ if (unlikely (!c->extend_min (this))) return_trace (false);
+ if (unlikely (!coverage.serialize_serialize (c, glyphs))) return_trace (false);
+ c->check_assign (deltaGlyphID, delta, HB_SERIALIZE_ERROR_INT_OVERFLOW);
+ return_trace (true);
+ }
+
+ bool subset (hb_subset_context_t *c) const
+ {
+ TRACE_SUBSET (this);
+ const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
+ const hb_map_t &glyph_map = *c->plan->glyph_map;
+
+ hb_codepoint_t delta = deltaGlyphID;
+
+ auto it =
+ + hb_iter (this+coverage)
+ | hb_filter (glyphset)
+ | hb_map_retains_sorting ([&] (hb_codepoint_t g) {
+ return hb_codepoint_pair_t (g,
+ (g + delta) & 0xFFFF); })
+ | hb_filter (glyphset, hb_second)
+ | hb_map_retains_sorting ([&] (hb_codepoint_pair_t p) -> hb_codepoint_pair_t
+ { return hb_pair (glyph_map[p.first], glyph_map[p.second]); })
+ ;
+
+ bool ret = bool (it);
+ SingleSubst_serialize (c->serializer, it);
+ return_trace (ret);
+ }
+};
+
+}
+}
+}
+
+
+#endif /* OT_LAYOUT_GSUB_SINGLESUBSTFORMAT1_HH */