Macro cucumber_rust::steps

macro_rules! steps {
    (
        @gather_steps, $worldtype:path, $tests:tt,
        $ty:ident regex $name:tt $body:expr;
    ) => { ... };
    (
        @gather_steps, $worldtype:path, $tests:tt,
        $ty:ident regex $name:tt $body:expr; $( $items:tt )*
    ) => { ... };
    (
        @gather_steps, $worldtype:path, $tests:tt,
        $ty:ident regex $name:tt, ($($arg_type:tt),*) $body:expr;
    ) => { ... };
    (
        @gather_steps, $worldtype:path, $tests:tt,
        $ty:ident regex $name:tt, ($($arg_type:tt),*) $body:expr; $( $items:tt )*
    ) => { ... };
    (
        @gather_steps, $worldtype:path, $tests:tt,
        $ty:ident $name:tt $body:expr;
    ) => { ... };
    (
        @gather_steps, $worldtype:path, $tests:tt,
        $ty:ident $name:tt $body:expr; $( $items:tt )*
    ) => { ... };
    (
        world: $worldtype:path;
        $( $items:tt )*
    ) => { ... };
}