Protocol Buffers for Go with Gadgets Files

Tested versions:

go 1.12.9 protoc 3.7.1

Improvements:

• plugin/stringer - Handle repeated and/or nullable types a bit better now.
• plugin/size - Remove the loop in sovXXX by using bit twiddling.
  • Thanks: https://github.com/apelisse
• plugin/marshalto - Implemented a reverse marshal strategy which allows for faster marshalling. This now avoids a recursive (and repeated) call to Size().
  • Thanks: https://github.com/apelisse
• plugin/compare - Added support for for oneof types.

Bug fixes:

• protoc-gen-gogo/generator - Fix assignment to entry in nil map.
  • Thanks: https://github.com/tgulacsi
• protoc-gen-gogo/generator - Allows plugins to call RecordTypeUse without panicking.
  • Thanks: https://github.com/fedenusy
• proto/extensions - Fixed set extension regression. We did not clear the extensions before setting.
• io/uint32 - fix uint32reader bug that causes ReadMsg to recreate buffer when lengths are the same.
  • Thanks: https://github.com/SebiSujar
• proto/table_merge: Fix merge of non-nullable slices.
  • Thanks: https://github.com/euroelessar

Upstream commits:

• merged in golang/protobuf commit [318d17] - Add UnimplementedServer for server interface
• merged in golang/protobuf commit [b85cd7] - protoc-gen-go/grpc: inline errUnimplemented function
• merged in golang/protobuf commit [d3c38a] - protoc-gen-go/grpc: use status and code packages only if needed
• merged in golang/protobuf commit [e91709] - fix indentation in jsonpb with Any messages
• merged in golang/protobuf commit [8d0c54] - protoc-gen-go: generate XXX_OneofWrappers instead of XXX_OneofFuncs

Misc:

• extensions.md - Markdown update.
  • Thanks: https://github.com/TennyZhuang
• Readme.md - Added user.
• go/protoc update - Updated to go1.12.x and protoc 3.7.1
• Makefile update - fix go vet shadow tool reference
• test/mixbench - Update mixbench tool. Expose runnable benchmarks via flags.