Goscript

A script language like Python or Lua written in Rust, with exactly the same syntax as Go's.

The Goal

• Runs most pure Go code, probably add some dynamic features if requested.

How do I try

The project "engine" is the entry/wrapper. there are test cases in here to browse through.

• Make sure your Rust installation is up to date.
• Clone this repository.
• Go to goscript/engine
• Run cargo test -- --nocapture

Use Cases

• As an embedded language like Lua.
• As a glue language like Python.

Rationale

• A scripting language that can be embedded in Rust.
• Go is popular and easy(even as a scripting language), why invent new grammars?
• In some cases, when your project gets big:
  • If Go were an embedded language it would be better than Lua.
  • If Go were a glue language it would be better than Python, in terms of project maintainability.
• I found a new hammer(Rust) that I like, and decided to use it on a nail(Go) that I like.

Implementation

• There are five projects:
  • parser -- a port of the official implementation that comes with the Go installer.
  • type checker -- a port of the official implementation that comes with the Go installer.
  • codegen -- generates the bytecode.
  • vm -- runs the bytecode.
  • engine -- the wrapper.

Progress

• Language: Feature complete (except the features that are so insignificant that I forgot -_-) Some of the features are, probably for the first time, implemented in a script language, like Select/Defer/Pointer/Interface/Struct.
• Standard library: just got started.
• Production readiness: far from. The parser and the type checker are probably ok because they were ported and passes the test cases comes with the original code. The backend has a lot of rough edges, and we need much more test cases.
• Next step: no new features for now, polish then work on the standard library.

Get in touch

• email: pb01005051 at Gmail.