tree 531660fe5913a06c9f40a693e7bf4e3b686393fa
parent 95b0290ea849bd21f9b747291b4b16a223354fd4
author Joe Tsai <joetsai@digital-static.net> 1541105536 -0700
committer Joe Tsai <thebrokentoaster@gmail.com> 1541448776 +0000

internal/encoding/tag: centralize logic for protobuf struct tag serialization

The bespoke text-serialization of field descriptors in protoc-gen-go is also
used in the legacy implementation of protobuf reflection to derive a
protoreflect.FieldDescriptor from legacy messages and also to convert to/from
protoreflect.ExtensionDescriptor and protoV1.ExtensionDesc.

Centralize this logic in a single place:
* to avoid reimplementing the same logic in internal/impl
* to keep the marshal and unmarshal logic co-located

Change-Id: I634c5afbb9dc6eda91d6cb6b0e68dbd724cb1ccb
Reviewed-on: https://go-review.googlesource.com/c/146758
Reviewed-by: Herbie Ong <herbie@google.com>
Reviewed-by: Damien Neil <dneil@google.com>