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@danburkert danburkert released this 10 Sep 19:46
· 395 commits to master since this release
v0.2.0
7ea989d

PROST! is a Protocol Buffers implementation for the Rust Language. prost generates simple, idiomatic Rust code from proto2 and proto3 files.

prost 0.2.0 includes many improvements over the previous version, including:

  • The prost-codegen crate has been removed, and its functionality has been combined into prost-build.
  • A new crate, prost-types, containing Protobuf well-known types has been added. The code generator will automatically use prost-types when well-known types are encountered during .proto → .rs code generation.
  • Field accessors for proto2 optional fields and enum fields have been made more ergonomic.
  • prost-build has a new builder API (prost_build::Config), which can be used to specify custom code generation options. Current options include:
    • Using BTreeMap instead of HashMap for map fields.
    • Custom code generation for protobuf service definitions.
  • New prost-specific error types, prost::EncodeError and prost::DecodeError for encoding and decoding results.
  • The prost::Message trait has been made more flexible, and more ergonomic.
  • varint encoding and decoding has been optimized, see the following commit messages for results:
  • Default values are now preserved during code generation (bugfix).
  • New Message::clear method.
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