internal/impl: handle legacy ExtensionDesc form

Add support for an ExtensionDesc with only Field populated as returned by
protoV1.ExtensionDescs. Rather than panicking when TypeDescriptor is called,
return a placeholder that preserves the name and/or number.

Change-Id: I60352a7aec8ccd8a0c1fb08db5891043a441695f
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/193725
Reviewed-by: Damien Neil <dneil@google.com>
3 files changed
tree: 82e0de31c4492cf9627b96697cc383eed32b5343
  1. benchmarks/
  2. cmd/
  3. compiler/
  4. encoding/
  5. internal/
  6. proto/
  7. reflect/
  8. runtime/
  9. testing/
  10. types/
  11. .gitignore
  12. .travis.yml
  13. AUTHORS
  14. CONTRIBUTING.md
  15. CONTRIBUTORS
  16. go.mod
  17. go.sum
  18. integration_test.go
  19. LICENSE
  20. PATENTS
  21. README.md
  22. regenerate.bash
  23. release.bash
  24. 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.