{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"(@rangeboundary"}]}
    (@rangeboundary -) => { MaybeInfiniteInt::NegInfinity };
    (@rangeboundary $sign:tt $int:literal) => { MaybeInfiniteInt::new_finite_uint($int) };
    (@rangeboundary +) => { MaybeInfiniteInt::PosInfinity };