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>
4 files changed
tree: 531660fe5913a06c9f40a693e7bf4e3b686393fa
  1. cmd/
  2. internal/
  3. protogen/
  4. reflect/
  5. .gitignore
  6. .travis.yml
  7. AUTHORS
  8. CONTRIBUTING.md
  9. CONTRIBUTORS
  10. go.mod
  11. go.sum
  12. LICENSE
  13. PATENTS
  14. README.md
  15. regenerate.bash
  16. test.bash
README.md

Next Generation Go Protocol Buffers

WARNING: This repository is in active development. There are no guarantees about API stability. Breaking changes will occur until a stable release is made and announced.

This repository is for the development of the next major Go implementation of protocol buffers. This library makes breaking API changes relative to the existing Go protobuf library. Of particular note, this API aims to make protobuf reflection a first-class feature of the API and implements the protobuf ecosystem in terms of reflection.

Design Documents

List of relevant design documents:

Contributing

We appreciate community contributions. See CONTRIBUTING.md.

Reporting Issues

Issues regarding the new API can be filed at github.com/golang/protobuf. Please use a APIv2: prefix in the title to make it clear that the issue is regarding the new API work.