iowo/src/builtins/mod.rs

use self::namespace::{GlobalNamespace, TypeDef};

pub mod namespace;

pub fn initialise_globals() -> GlobalNamespace {
    let mut ns = GlobalNamespace::init();

    let numeric = ns.register_trait("Numeric").unwrap();

    ns.register_type("integer").unwrap().add_trait(&numeric);
    ns.register_type("float").unwrap().add_trait(&numeric);

    ns.register_type("string").unwrap();

    // def math add [ Numeric Numeric ] -> Numeric
    ns.register_command(
        "add",
        Some(TypeDef::List(vec![
            TypeDef::Trait(numeric),
            TypeDef::Trait(numeric),
        ])),
        Some(TypeDef::Trait(numeric)),
    )
    .unwrap();

    ns
}