Grpc-dotnet: Syntax support in VS and VS Code

[JunTaoLuo]

Determine if we want to add official grammar and syntax support for VS and VS Code in addition to the third party extensions currently available.

[jtattermusch]

I assume you mean syntax support for .proto files?
It would be good to list the existing third-party extensions you had in mind here.
Also, I'm not sure if there are any grpc-specific features that would be useful or if .proto syntax support would be sufficient.

[JunTaoLuo]

Correct I'm referring to the .proto file syntax and grammar. Currently I'm using https://github.com/zxh0/vscode-proto3 for vscode and https://github.com/mreu/ProtobufLanguageService for full vs. They provide syntax support but I haven't seen any autocomplete (of message names) or intellisense (go to definition) like capabilities.

[AlgorithmsAreCool]

Please don't forget about imported .proto files.

We break up our protos into multiple files and import them into a root file to keep things organized. But it makes it hard on the tooling which mostly assumes that all the messages are defined in a single file.

I can provide examples if this is confusing.

[JunTaoLuo]

VS is shipping support for proto grammar in VS 2019 Update 16.1.

[ndobryanskyy]

@JunTaoLuo, can you please explain here or point somewhere on how to enable intellisense support for .proto files in Visual Studio 2019?

I am currently using VS 2019 16.3.0 Preview 4.0 and the highlighting seems fine (except for rpc within services - no colors there), but no auto-completion pops up :(