ruru::methods!

macro_rules! methods {
    (
        $itself_class: ty,
        $itself_name: ident,
        $(
            fn $method_name: ident
            ($($arg_name: ident: $arg_type: ty),*) -> $return_type: ident $body: block
        )*
    ) => { ... };
}

Creates callbacks for Ruby methods

Examples

#[macro_use]
extern crate ruru;

use ruru::{AnyObject, Boolean, Class, Fixnum, RString, VM};
use ruru::types::Argc;
use ruru::traits::Object;

// Creates `string_is_blank` and `string_length_equals` functions
methods!(
    RString, // type of `self` object
    itself, // name of `self` object which will be used in methods

    fn string_is_blank() -> Boolean {
        Boolean::new(itself.to_string().chars().all(|c| c.is_whitespace()))
    }

    fn string_length_equals(expected_length: Fixnum) -> Boolean {
        let real_length = itself.to_string().len() as i64;

        Boolean::new(expected_length.to_i64() == real_length)
    }
);

fn main() {
    Class::from_existing("String").define(|itself| {
        itself.def("blank?", string_is_blank);
        itself.def("length_equals?", string_length_equals);
    });
}

Ruby:

class String
  def blank?
    # ...
  end

  def length_equals?(expected_length)
    # ...
  end
end