hansjorg/rust-protobuf

Rust support for Google protocol buffers

rust-protobuf

Protobuf implementation in Rust.

• Written in pure rust
• Generate rust code
• Has runtime library for generated code (Coded{Input|Output}Stream impl)
• Incomplete and unstable

How to use rust-protobuf

0. Install protobuf for protoc binary.

On OS X Homebrew can be used:

brew install protobuf

1. Compile the project:

cd src
./rebuild.sh

protoc-gen-rust binary is generated. protoc-gen-rust is a rust plugin for protoc.

2. Add protoc-gen-rust to $PATH:

PATH="`pwd`:$PATH"

3. Generate .rs files:

protoc --rust_out . foo.proto

This will generate .rs files in current directory.

Same procedure is used to regenerate .rs files for rust-protobuf itself, see ./regerate.sh.

4. Include generated files into your project .rc file:

extern mod protobuf; // depend on rust-protobuf runtime
mod foo; // add generated file to the project

Generated code

Have a look at generated files, used internally in rust-protobuf:

• shrug.rs for shrug.proto (used by rust-protobuf tests)
• descriptor.rs for descriptor.proto (that is part of Google protobuf)

TODO

• Implement some rust-specific options
• Deal better with namespaces
• Store unknown fields
• Protobuf reflection
• Extensions
• default_instance for messages with repeated fields
• Generate stubs for services
• Comprehensive test suite
• Default value

Contact me

@stepancheg on github if you have any questions, suggesions or patches.