wtfmacros.rs

macro_rules! vertex_format_inner
(
    (($a: expr, $b: expr), $(($a_rest: expr, $b_rest: expr)),+) =>
        (
            ($a, $b), vertex_format_inner!($(($a_rest, $b_rest)),*)
        );

    (($a: expr, $b: expr)) =>
        (
            ($a, $b)
        )
)

macro_rules! vertex_format
(
    ($(($a: expr, $b: expr)),+) =>
        (
            ~[vertex_format_inner!($(($a, $b)),+)]
        )
)

fn main()
{
    vertex_format!(
        (1, 2), (3, 4)
    )
}