diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/graph/serialize.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/graph/serialize.hh | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/thirdparty/harfbuzz/src/graph/serialize.hh b/thirdparty/harfbuzz/src/graph/serialize.hh index ecc6cc5aea..d03a61bd19 100644 --- a/thirdparty/harfbuzz/src/graph/serialize.hh +++ b/thirdparty/harfbuzz/src/graph/serialize.hh @@ -33,6 +33,23 @@ struct overflow_record_t { unsigned parent; unsigned child; + + bool operator != (const overflow_record_t o) const + { return !(*this == o); } + + inline bool operator == (const overflow_record_t& o) const + { + return parent == o.parent && + child == o.child; + } + + inline uint32_t hash () const + { + uint32_t current = 0; + current = current * 31 + hb_hash (parent); + current = current * 31 + hb_hash (child); + return current; + } }; inline @@ -94,6 +111,7 @@ will_overflow (graph_t& graph, if (overflows) overflows->resize (0); graph.update_positions (); + hb_hashmap_t<overflow_record_t*, bool> record_set; const auto& vertices = graph.vertices_; for (int parent_idx = vertices.length - 1; parent_idx >= 0; parent_idx--) { @@ -109,7 +127,10 @@ will_overflow (graph_t& graph, overflow_record_t r; r.parent = parent_idx; r.child = link.objidx; + if (record_set.has(&r)) continue; // don't keep duplicate overflows. + overflows->push (r); + record_set.set(&r, true); } } @@ -223,7 +244,7 @@ inline hb_blob_t* serialize (const graph_t& graph) return nullptr; } - memcpy (start, vertices[i].obj.head, size); + hb_memcpy (start, vertices[i].obj.head, size); // Only real links needs to be serialized. for (const auto& link : vertices[i].obj.real_links) |