{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"Div"}]}
                Div if r.is_null() => throw_ub!(DivisionByZero),
            let op: Option<fn(i128, i128) -> (i128, bool)> = match bin_op {
                Rem if r.is_null() => throw_ub!(RemainderByZero),