{"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"ty::Adt(adt,"}]}
                ty::Adt(adt, _) => {
                ty::Tuple(fs) => reveal_and_alloc(cx, fs.iter()),
                    let variant = &adt.variant(RustcPatCtxt::variant_index_for_adt(&ctor, *adt));