https://github.com/ahrefs/rust-ocaml-derive

https://github.com/ahrefs/rust-ocaml-derive

Last synced: 2 months ago
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• Host: GitHub
• URL: https://github.com/ahrefs/rust-ocaml-derive
• Owner: ahrefs
• License: mit
• Created: 2018-03-06T10:41:01.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2021-02-12T14:19:59.000Z (almost 4 years ago)
• Last Synced: 2024-10-14T11:36:04.761Z (3 months ago)
• Language: Rust
• Size: 21.5 KB
• Stars: 61
• Watchers: 33
• Forks: 5
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# derive-ocaml - Custom derive and procedural macros for easier ocaml <-> rust FFI

*WARNING* this crate is very experimental

derive-ocaml is based on top of [ocaml-rs](https://github.com/zshipko/ocaml-rs) and adds a custom derive macro for `FromValue` and `ToValue`.

The macro supports structs, enums, and unboxed float records.

On top of that it implements a nightly only procedural macro `ocaml-ffi` to ease the boilerplate of writing stubs functions.

```

#[derive(Debug, Default, ToValue, FromValue)]

#[ocaml(floats_array)]

pub struct Vec3 {

    x: f32,

    y: f32,

    z: f32,

}

#[ocaml_ffi]

pub fn rust_add_vecs(l: Vec3, r: Vec3) -> Vec3 {

    l + r

}

```

see `src/example/src/lib.rs` and `src/example/src/stubs.ml` for example