[subset] GPOS Lookup Type 3: CursivePos
diff --git a/src/hb-ot-layout-gpos-table.hh b/src/hb-ot-layout-gpos-table.hh
index 7b9ccf4..73107f4 100644
--- a/src/hb-ot-layout-gpos-table.hh
+++ b/src/hb-ot-layout-gpos-table.hh
@@ -257,6 +257,12 @@
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
}
+
+ AnchorFormat1* copy (hb_serialize_context_t *c) const
+ {
+ TRACE_SERIALIZE (this);
+ return_trace (c->embed<AnchorFormat1> (this));
+ }
protected:
HBUINT16 format; /* Format identifier--format = 1 */
@@ -296,6 +302,12 @@
return_trace (c->check_struct (this));
}
+ AnchorFormat2* copy (hb_serialize_context_t *c) const
+ {
+ TRACE_SERIALIZE (this);
+ return_trace (c->embed<AnchorFormat2> (this));
+ }
+
protected:
HBUINT16 format; /* Format identifier--format = 2 */
FWORD xCoordinate; /* Horizontal value--in design units */
@@ -326,6 +338,17 @@
return_trace (c->check_struct (this) && xDeviceTable.sanitize (c, this) && yDeviceTable.sanitize (c, this));
}
+ AnchorFormat3* copy (hb_serialize_context_t *c) const
+ {
+ TRACE_SERIALIZE (this);
+ auto *out = c->embed<AnchorFormat3> (this);
+ if (unlikely (!out)) return_trace (nullptr);
+
+ out->xDeviceTable.serialize_copy (c, xDeviceTable, this, out);
+ out->yDeviceTable.serialize_copy (c, yDeviceTable, this, out);
+ return_trace (out);
+ }
+
protected:
HBUINT16 format; /* Format identifier--format = 3 */
FWORD xCoordinate; /* Horizontal value--in design units */
@@ -368,6 +391,17 @@
}
}
+ Anchor* copy (hb_serialize_context_t *c) const
+ {
+ TRACE_SERIALIZE (this);
+ switch (u.format) {
+ case 1: return_trace (reinterpret_cast<Anchor *> (u.format1.copy (c)));
+ case 2: return_trace (reinterpret_cast<Anchor *> (u.format2.copy (c)));
+ case 3: return_trace (reinterpret_cast<Anchor *> (u.format3.copy (c)));
+ default:return_trace (nullptr);
+ }
+ }
+
protected:
union {
HBUINT16 format; /* Format identifier */
@@ -1064,6 +1098,19 @@
return_trace (entryAnchor.sanitize (c, base) && exitAnchor.sanitize (c, base));
}
+ EntryExitRecord* copy (hb_serialize_context_t *c,
+ const void *src_base,
+ const void *dst_base) const
+ {
+ TRACE_SERIALIZE (this);
+ auto *out = c->embed (this);
+ if (unlikely (!out)) return_trace (nullptr);
+
+ out->entryAnchor.serialize_copy (c, entryAnchor, src_base, dst_base);
+ out->exitAnchor.serialize_copy (c, exitAnchor, src_base, dst_base);
+ return_trace (out);
+ }
+
protected:
OffsetTo<Anchor>
entryAnchor; /* Offset to EntryAnchor table--from
@@ -1191,11 +1238,47 @@
return_trace (true);
}
+ template <typename Iterator,
+ hb_requires (hb_is_iterator (Iterator))>
+ void serialize (hb_serialize_context_t *c,
+ Iterator it,
+ const void *src_base)
+ {
+ if (unlikely (!c->extend_min ((*this)))) return;
+ this->format = 1;
+ this->entryExitRecord.len = it.len ();
+
+ for (const EntryExitRecord& entry_record : + it
+ | hb_map (hb_second))
+ c->copy (entry_record, src_base, this);
+
+ auto glyphs =
+ + it
+ | hb_map_retains_sorting (hb_first)
+ ;
+
+ coverage.serialize (c, this).serialize (c, glyphs);
+ }
+
bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
- // TODO(subset)
- return_trace (false);
+ const hb_set_t &glyphset = *c->plan->glyphset ();
+ const hb_map_t &glyph_map = *c->plan->glyph_map;
+
+ auto *out = c->serializer->start_embed (*this);
+ if (unlikely (!out)) return_trace (false);
+
+ auto it =
+ + hb_zip (this+coverage, entryExitRecord)
+ | hb_filter (glyphset, hb_first)
+ | hb_map_retains_sorting ([&] (hb_pair_t<hb_codepoint_t, const EntryExitRecord&> p) -> hb_pair_t<hb_codepoint_t, const EntryExitRecord&>
+ { return hb_pair (glyph_map[p.first], p.second);})
+ ;
+
+ bool ret = bool (it);
+ out->serialize (c->serializer, it, this);
+ return_trace (ret);
}
bool sanitize (hb_sanitize_context_t *c) const
