Crate decorator

Decorator module for creating native functions callable from haru

extern crate haru;
use haru::vmbindings::vm::Vm;
use haru::vmbindings::value::Value;

#[hana_function()]
fn succ(i: Value::Int) {
    Value::Int(i + 1)
}

The macro should generate a function with the signature:

pub extern "C" fn succ(vm: *const Vm, nargs: u16) {
    ...
}

Attribute Macros

• hana_function
  Generates a native function callable from haru’s virtual machine.