syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"ty::Uint(uty)"}]}
source_snippet:             ty::Uint(uty) => (Integer::from_uint_ty(&tcx, uty).size(), false),
context_before:             ty::Int(ity) => (Integer::from_int_ty(&tcx, ity).size(), true),
context_after:             _ => bug!("non integer discriminant"),