projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*! |
| 2 | @file | |
| 3 | Defines `boost::hana::detail::variadic::reverse_apply_unrolled`. | |
| 4 | ||
| 5 | @copyright Louis Dionne 2013-2016 | |
| 6 | Distributed under the Boost Software License, Version 1.0. | |
| 7 | (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_UNROLLED_HPP | |
| 11 | #define BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_UNROLLED_HPP | |
| 12 | ||
| 13 | #include <boost/hana/config.hpp> | |
| 14 | #include <boost/hana/functional/reverse_partial.hpp> | |
| 15 | ||
| 16 | ||
| 17 | BOOST_HANA_NAMESPACE_BEGIN namespace detail { namespace variadic { | |
| 18 | struct reverse_apply_unrolled_impl { | |
| 19 | template <typename F> | |
| 20 | constexpr decltype(auto) operator()(F&& f) const { | |
| 21 | return static_cast<F&&>(f)(); | |
| 22 | } | |
| 23 | ||
| 24 | template <typename F, typename X1> | |
| 25 | constexpr decltype(auto) operator()(F&& f, X1&& x1) const { | |
| 26 | return static_cast<F&&>(f)( | |
| 27 | static_cast<X1&&>(x1) | |
| 28 | ); | |
| 29 | } | |
| 30 | ||
| 31 | template <typename F, typename X1, typename X2> | |
| 32 | constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2) const { | |
| 33 | return static_cast<F&&>(f)( | |
| 34 | static_cast<X2&&>(x2), | |
| 35 | static_cast<X1&&>(x1) | |
| 36 | ); | |
| 37 | } | |
| 38 | ||
| 39 | template <typename F, typename X1, typename X2, typename X3> | |
| 40 | constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3) const { | |
| 41 | return static_cast<F&&>(f)( | |
| 42 | static_cast<X3&&>(x3), | |
| 43 | static_cast<X2&&>(x2), | |
| 44 | static_cast<X1&&>(x1) | |
| 45 | ); | |
| 46 | } | |
| 47 | ||
| 48 | template <typename F, typename X1, typename X2, typename X3, typename X4> | |
| 49 | constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3, X4&& x4) const { | |
| 50 | return static_cast<F&&>(f)( | |
| 51 | static_cast<X4&&>(x4), | |
| 52 | static_cast<X3&&>(x3), | |
| 53 | static_cast<X2&&>(x2), | |
| 54 | static_cast<X1&&>(x1) | |
| 55 | ); | |
| 56 | } | |
| 57 | ||
| 58 | template <typename F, typename X1, typename X2, typename X3, typename X4, typename X5> | |
| 59 | constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3, X4&& x4, X5&& x5) const { | |
| 60 | return static_cast<F&&>(f)( | |
| 61 | static_cast<X5&&>(x5), | |
| 62 | static_cast<X4&&>(x4), | |
| 63 | static_cast<X3&&>(x3), | |
| 64 | static_cast<X2&&>(x2), | |
| 65 | static_cast<X1&&>(x1) | |
| 66 | ); | |
| 67 | } | |
| 68 | ||
| 69 | template <typename F, typename X1, typename X2, typename X3, typename X4, typename X5, typename X6, typename ...Xn> | |
| 70 | constexpr decltype(auto) operator()(F&& f, X1&& x1, X2&& x2, X3&& x3, X4&& x4, X5&& x5, X6&& x6, Xn&& ...xn) const { | |
| 71 | return (*this)(hana::reverse_partial( | |
| 72 | static_cast<F&&>(f) | |
| 73 | , static_cast<X6&&>(x6) | |
| 74 | , static_cast<X5&&>(x5) | |
| 75 | , static_cast<X4&&>(x4) | |
| 76 | , static_cast<X3&&>(x3) | |
| 77 | , static_cast<X2&&>(x2) | |
| 78 | , static_cast<X1&&>(x1) | |
| 79 | ), static_cast<Xn&&>(xn)...); | |
| 80 | } | |
| 81 | }; | |
| 82 | ||
| 83 | constexpr reverse_apply_unrolled_impl reverse_apply_unrolled{}; | |
| 84 | ||
| 85 | }} BOOST_HANA_NAMESPACE_END | |
| 86 | ||
| 87 | #endif // !BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_UNROLLED_HPP |