internal/impl: setup scaffolding for unknown and extension fields

Setup scaffolding for implementing unknown and extension fields.
Add functions to MessageType to produce a protoreflect.KnownFields or
protoreflect.UnknownFields from a message pointer.

Within the implementation of known fields, delegate the logic to the underlying
extension fields (which also implements protoreflect.KnownFields) if the field
number is not found in the set of defined fields.

Change-Id: I2c35f4cdf1c7b58727ce6a582861ef18b8d69a61
Reviewed-on: https://go-review.googlesource.com/c/144280
Reviewed-by: Damien Neil <dneil@google.com>
1 file changed
tree: d6fa434629d5e963ea8d7f7abe9388699e03967d
  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.