Function rustc_query_impl::plumbing::query_callback

pub(crate) fn query_callback<'tcx, Q: QueryConfig>(
    is_anon: bool,
    is_eval_always: bool
) -> DepKindStruct<'tcx>where
    Q: QueryDescription<QueryCtxt<'tcx>>,
    Q::Key: DepNodeParams<TyCtxt<'tcx>>,