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| /*!
| @file
| Defines `boost::hana::detail::variadic::reverse_apply_unrolled`.
|
| @copyright Louis Dionne 2013-2017
| Distributed under the Boost Software License, Version 1.0.
| (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
| */
|
| #ifndef BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_UNROLLED_HPP
| #define BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_UNROLLED_HPP
|
| #include <boost/hana/config.hpp>
| #include <boost/hana/functional/reverse_partial.hpp>
|
|
| BOOST_HANA_NAMESPACE_BEGIN namespace detail { namespace variadic {
| struct reverse_apply_unrolled_impl {
| template <typename F>
| constexpr decltype(auto) operator()(F&& f) const {
| return static_cast<F&&>(f)();
| }
|
| template <typename F, typename X1>
| constexpr decltype(auto) operator()(F&& f, X1&& x1) const {
| return static_cast<F&&>(f)(
| static_cast<X1&&>(x1)
| );
| }
|
| template <typename F, typename X1, typename X2>
| constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2) const {
| return static_cast<F&&>(f)(
| static_cast<X2&&>(x2),
| static_cast<X1&&>(x1)
| );
| }
|
| template <typename F, typename X1, typename X2, typename X3>
| constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3) const {
| return static_cast<F&&>(f)(
| static_cast<X3&&>(x3),
| static_cast<X2&&>(x2),
| static_cast<X1&&>(x1)
| );
| }
|
| template <typename F, typename X1, typename X2, typename X3, typename X4>
| constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3, X4&& x4) const {
| return static_cast<F&&>(f)(
| static_cast<X4&&>(x4),
| static_cast<X3&&>(x3),
| static_cast<X2&&>(x2),
| static_cast<X1&&>(x1)
| );
| }
|
| template <typename F, typename X1, typename X2, typename X3, typename X4, typename X5>
| constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3, X4&& x4, X5&& x5) const {
| return static_cast<F&&>(f)(
| static_cast<X5&&>(x5),
| static_cast<X4&&>(x4),
| static_cast<X3&&>(x3),
| static_cast<X2&&>(x2),
| static_cast<X1&&>(x1)
| );
| }
|
| template <typename F, typename X1, typename X2, typename X3, typename X4, typename X5, typename X6, typename ...Xn>
| constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3, X4&& x4, X5&& x5, X6&& x6, Xn&& ...xn) const {
| return (*this)(hana::reverse_partial(
| static_cast<F&&>(f)
| , static_cast<X6&&>(x6)
| , static_cast<X5&&>(x5)
| , static_cast<X4&&>(x4)
| , static_cast<X3&&>(x3)
| , static_cast<X2&&>(x2)
| , static_cast<X1&&>(x1)
| ), static_cast<Xn&&>(xn)...);
| }
| };
|
| constexpr reverse_apply_unrolled_impl reverse_apply_unrolled{};
|
| }} BOOST_HANA_NAMESPACE_END
|
| #endif // !BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_UNROLLED_HPP
|
|
