Support proto3

[Downchuck]

https://github.com/google/protobuf/blob/master/CHANGES.txt

"In proto3, the language is simplified, both for ease of use and to
make it available in a wider range of programming languages. At the
same time a few features are added to better support common idioms
found in APIs."

[msoucy]

I would _love_ to do this, but at the moment I've got way too much to deal with...plus even the 2.x line isn't up to date. I did take a look at some of the changes, and I think they're great.

[Downchuck]

I completely understand -- it's my intention to submit a couple of pull requests.
The code base for dproto is wonderfully accessible.

[msoucy]

Why thank you! I have to thank Square for their initial protoparser that I based this parser off of, but I'm glad that it's accessible. That was one of my goals for the project.

[MartinNowak]

There is some effort to get D support for version 3 into the official protocol buffers repo.
You should get in contact with Dragos Carp https://github.com/dcarp/protobuf.

[WebDrake]

Has there been any progress on this?

[timotheecour]

Timestamp doesn't seem supported

ref: https://developers.google.com/protocol-buffers/docs/proto3
=> unexpected label: Timestamp

[timotheecour]

@msoucy
optional modifier shouldn't exist in proto3 (ie should be implicit), but dproto is being inconsistent:

syntax = "proto3";

message A{
  //Foo foo=1; // gives an error but should be accepted
  optional Foo foo=1;  // works but shouldn't
  string foo2=2;  // accepted, as it should
}

message Foo{
  int32 bar=1;
}