projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2001-2011 Joel de Guzman | |
| 92f5a8d4 | 3 | Copyright (c) 2018 Kohei Takahashi |
| 7c673cae FG |
4 | |
| 5 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| 7 | ==============================================================================*/ | |
| 8 | #if !defined(BOOST_FUSION_SUPPORT_UNUSED_20070305_1038) | |
| 9 | #define BOOST_FUSION_SUPPORT_UNUSED_20070305_1038 | |
| 10 | ||
| 11 | #include <boost/fusion/support/config.hpp> | |
| 12 | #include <iosfwd> | |
| 13 | ||
| 7c673cae FG |
14 | #if defined(BOOST_MSVC) |
| 15 | # pragma warning(push) | |
| 16 | # pragma warning(disable: 4522) // multiple assignment operators specified warning | |
| 17 | #endif | |
| 18 | ||
| 19 | #define BOOST_FUSION_UNUSED_HAS_IO | |
| 20 | ||
| 21 | namespace boost { namespace fusion | |
| 22 | { | |
| 23 | struct unused_type | |
| 24 | { | |
| 25 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 92f5a8d4 TL |
26 | BOOST_DEFAULTED_FUNCTION( |
| 27 | unused_type() BOOST_FUSION_NOEXCEPT_ON_DEFAULTED, | |
| 7c673cae | 28 | { |
| 92f5a8d4 | 29 | }) |
| 7c673cae | 30 | |
| 7c673cae | 31 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| 92f5a8d4 TL |
32 | BOOST_DEFAULTED_FUNCTION( |
| 33 | unused_type(unused_type const&) BOOST_FUSION_NOEXCEPT_ON_DEFAULTED, | |
| 7c673cae | 34 | { |
| 92f5a8d4 | 35 | }) |
| 7c673cae FG |
36 | |
| 37 | template <typename T> | |
| 92f5a8d4 TL |
38 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| 39 | unused_type(T const&) BOOST_NOEXCEPT | |
| 7c673cae | 40 | { |
| 7c673cae FG |
41 | } |
| 42 | ||
| 43 | BOOST_FUSION_CONSTEXPR_THIS BOOST_FUSION_GPU_ENABLED | |
| 44 | unused_type const& | |
| 45 | operator=(unused_type const&) const BOOST_NOEXCEPT | |
| 46 | { | |
| 47 | return *this; | |
| 48 | } | |
| 7c673cae FG |
49 | }; |
| 50 | ||
| 51 | BOOST_CONSTEXPR_OR_CONST unused_type unused = unused_type(); | |
| 52 | ||
| 53 | namespace detail | |
| 54 | { | |
| 55 | struct unused_only | |
| 56 | { | |
| 57 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 58 | unused_only(unused_type const&) BOOST_NOEXCEPT {} | |
| 59 | }; | |
| 60 | } | |
| 61 | ||
| 62 | BOOST_CONSTEXPR | |
| 63 | inline std::ostream& operator<<(std::ostream& out, detail::unused_only const&) BOOST_NOEXCEPT | |
| 64 | { | |
| 65 | return out; | |
| 66 | } | |
| 67 | ||
| 68 | BOOST_CONSTEXPR | |
| 69 | inline std::istream& operator>>(std::istream& in, unused_type&) BOOST_NOEXCEPT | |
| 70 | { | |
| 71 | return in; | |
| 72 | } | |
| 73 | }} | |
| 74 | ||
| 75 | #if defined(BOOST_MSVC) | |
| 76 | # pragma warning(pop) | |
| 77 | #endif | |
| 78 | ||
| 79 | #endif |