ocaml-pirates / ocaml-rs

Rust bindings to the OCaml runtime

ocaml-rs - OCaml extensions in Rust

Note: ocaml-rs is still experimental, please report any issues on github

ocaml-rs allows for OCaml extensions to be written directly in Rust with no C stubs. It was forked from raml with the goal of creating a safer, high-level interface.

#[macro_use]
use ocaml;
use ocaml::ToValue;

caml!(ml_beef, |parameter|, <local>, {
    let i = parameter.i32_val();
    let res = 0xbeef * i;
    println!("about to return  0x{:x} to OCaml runtime", res);
    local = res.to_value();
} -> local);

This will take care of all the OCaml garbage collector related bookkeeping (CAMLparam, CAMLlocal and CAMLreturn)

For a working example see ocaml-vec or ./examples/rust and ./examples/ocaml

Documentation

https://docs.rs/ocaml/