{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"(@rangeboundary"}]}
    (@rangeboundary $sign:tt $int:literal) => { MaybeInfiniteInt::new_finite_uint($int) };
    // Utility to manage range boundaries.
    (@rangeboundary -) => { MaybeInfiniteInt::NegInfinity };