{"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"let"}]}
                        let hi = hi.as_finite().map(|c| c.eval_bits(cx.tcx, cx.typing_env));
                        let lo = lo.as_finite().map(|c| c.eval_bits(cx.tcx, cx.typing_env));
                        match fty {