PrototypeD

USAGE:
    prototyped <SUBCOMMAND>

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information

SUBCOMMANDS:
    build        Compile a schema into new or existing source code
    help         Prints this message or the help of the given subcommand(s)
    normalize    Normalize a protobin by sorting all the keys of messages and maps
    tojson       Extract a protobin into another serialized data format

PrototypeD is a sophisticated Protobuf code generator supporting multiple languages including Rust, Python, JavaScript, TypeScript, GDScript, and C++. It includes schema translation and cross-language testing capabilities.

• Designed and implemented Protobuf code generators for multiple languages including Rust, Python, JavaScript, TypeScript, GDScript, and C++
• Created a Protobuf schema translator to convert between the Protobuf schema language and JSON
• Built a cross-language unit test framework that runs and verifies identical test suites across multiple languages

Supported Languages

• Rust: Async/await support, zero-copy parsing
• Python: Typed dictionaries, dataclasses
• JavaScript/TypeScript: ES6 modules, type definitions
• GDScript: Godot 3 and 4 compatible
• C++: Protocol buffer v3 compatible

Architecture

PrototypeD's generator architecture:

graph LR
    Proto[.proto files] --> Parser --> IR[Intermediate Representation]
    IR --> Generator1 --> Output1[Rust code]
    IR --> Generator2 --> Output2[Python code]
    IR --> Generator3 --> Output3[TS code]

Schema Translation

The schema translator supports bidirectional conversion:

// Protobuf schema
message Person {
  string name = 1;
  int32 id = 2;
  repeated string emails = 3;
}

// JSON representation
{
  "message": {
    "name": "Person",
    "fields": [
      {"name": "name", "type": "string", "id": 1},
      {"name": "id", "type": "int32", "id": 2},
      {"name": "emails", "type": "string", "repeated": true, "id": 3}
    ]
  }
}

Cross-Language Testing

The test framework ensures consistency:

• Identical test cases in every language
• Automated comparison of serialization/deserialization
• Schema versioning support