runtime/protoiface: API adjustments
The following adjustments were made:
* The pragma.NoUnkeyedLiterals is moved to be the first field.
This is done to keep the options struct smaller. Even if the last
field is zero-length, Go GC implementation details forces the struct
to be padded at the end.
* Methods are documented as always treating AllowPartial as true.
* Added a support flag for UnmarshalOptions.DiscardUnknown.
Change-Id: I1f75d226542ab2bb0123d9cea143c7060df226d8
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/185998
Reviewed-by: Damien Neil <dneil@google.com>
diff --git a/internal/impl/codec_message.go b/internal/impl/codec_message.go
index 61c88c1..e0ebc7e 100644
--- a/internal/impl/codec_message.go
+++ b/internal/impl/codec_message.go
@@ -98,7 +98,7 @@
mi.needsInitCheck = needsInitCheck(mi.PBType)
mi.methods = piface.Methods{
- Flags: piface.MethodFlagDeterministicMarshal,
+ Flags: piface.SupportMarshalDeterministic | piface.SupportUnmarshalDiscardUnknown,
MarshalAppend: mi.marshalAppend,
Unmarshal: mi.unmarshal,
Size: mi.size,