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[cmap] Rewrite set_for() slightly

This commit is contained in:
Behdad Esfahbod 2022-06-03 01:37:02 -06:00
parent 9552955e08
commit 5dc12d7d8d
1 changed files with 12 additions and 4 deletions
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16
src/hb-ot-cmap-table.hh
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@ -1482,12 +1482,20 @@ struct SubtableUnicodesCache {
SubtableUnicodesCache(const void* cmap_base)
: base(cmap_base), cached_unicodes() {}
hb_set_t* set_for(const EncodingRecord* record)
hb_set_t* set_for (const EncodingRecord* record)
{
if (!cached_unicodes.has ((intptr_t) record)) {
if (unlikely (!cached_unicodes.set ((intptr_t) record, hb::unique_ptr<hb_set_t> {hb_set_create ()})))
if (!cached_unicodes.has ((intptr_t) record))
{
hb_set_t *s = hb_set_create ();
if (unlikely (s->in_error ()))
return hb_set_get_empty ();
(base+record->subtable).collect_unicodes (s);
if (unlikely (!cached_unicodes.set ((intptr_t) record, hb::unique_ptr<hb_set_t> {s})))
return hb_set_get_empty ();
(base+record->subtable).collect_unicodes (cached_unicodes.get ((intptr_t) record));
return s;
}
return cached_unicodes.get ((intptr_t) record);
}