Class attribute

include/boost/parser/parser.hpp:9999–10006

    template<typename R, typename Parser>
    struct attribute
    {
        using initial_type = typename detail::attribute_impl<
            decltype(detail::make_input_subrange(std::declval<R>())),
            Parser>::type;
        using type =
            typename decltype(detail::attr_wrapped_final<initial_type>)::type;
    };


    namespace detail {