AnshulMalik / rapidus

A toy JavaScript engine in Rust

Rapidus

A toy JavaScript engine aiming to pass test262

Features

• Small
• Support Tracing-JIT compiling
  • Currently, any functions or loops fitting for the following rules would be JIT-compiled.
    • Accessing only its arguments and local variables (not global variables)
    • Number and Boolean(only for function's returning type) are used
    • Calling only itself
    • (There are exceptions...)

Building from Source

Building on Linux

1. Install dependencies

• LLVM 6.0

$ # e.g. Ubuntu or Debian
$ apt-get install llvm-6.0

2. Test

$ cargo test

3. Build

$ cargo run --release

4. Run

$ cargo run --release example/XXX.js

Building on other platforms

I don't know.

• tips: If you are using macOS, you cannot use llvm installed with brew. You should use macports or docker instead. Now it works!

Use Dockerfile

• Docker image: uint256/rapidus

$ docker build -t rapidus:1.0 .
$ docker run -it rapidus:1.0