Joe Tsai 4ec39c7663 reflect/protoreflect: add KnownFields.WhichOneof
Add a method that provides efficiently querying for which member field
in a oneof is actually set. This is useful when dealing with oneofs
with many member fields.

Change-Id: I918b566c432f8bdd24dcecbb5501d231ffefef29
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/170580
Reviewed-by: Damien Neil <dneil@google.com>
2019-04-09 21:18:45 +00:00
..
2018-12-19 00:36:57 +00:00