Function rustc_query_system::query::get_query

pub fn get_query<Q, CTX>(
    tcx: CTX,
    span: Span,
    key: Q::Key,
    mode: QueryMode
) -> Option<Q::Stored>where
    Q: QueryDescription<CTX>,
    Q::Key: DepNodeParams<CTX::DepContext>,
    Q::Value: Value<CTX::DepContext>,
    CTX: QueryContext,