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1 | |
2 | // Copyright Oliver Kowalke 2014. | |
3 | // Distributed under the Boost Software License, Version 1.0. | |
4 | // (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | #ifndef BOOST_CONTEXT_DETAIL_APPLY_H | |
8 | #define BOOST_CONTEXT_DETAIL_APPLY_H | |
9 | ||
10 | #include <functional> | |
11 | #include <tuple> | |
12 | #include <type_traits> | |
13 | #include <utility> | |
14 | ||
15 | #include <boost/config.hpp> | |
16 | ||
17 | #include <boost/context/detail/config.hpp> | |
18 | #include <boost/context/detail/invoke.hpp> | |
19 | #include <boost/context/detail/index_sequence.hpp> | |
20 | ||
21 | #ifdef BOOST_HAS_ABI_HEADERS | |
22 | # include BOOST_ABI_PREFIX | |
23 | #endif | |
24 | ||
25 | namespace boost { | |
26 | namespace context { | |
27 | namespace detail { | |
28 | ||
29 | template< typename Fn, typename Tpl, std::size_t ... I > | |
30 | auto | |
31 | apply_impl( Fn && fn, Tpl && tpl, index_sequence< I ... >) | |
32 | -> decltype( invoke( std::forward< Fn >( fn), std::get< I >( std::forward< Tpl >( tpl) ) ... ) ) | |
33 | { | |
34 | return invoke( std::forward< Fn >( fn), std::get< I >( std::forward< Tpl >( tpl) ) ... ); | |
35 | } | |
36 | ||
37 | template< typename Fn, typename Tpl > | |
38 | auto | |
39 | apply( Fn && fn, Tpl && tpl) | |
40 | -> decltype( apply_impl( std::forward< Fn >( fn), | |
41 | std::forward< Tpl >( tpl), | |
42 | make_index_sequence< std::tuple_size< typename std::decay< Tpl >::type >::value >{}) ) | |
43 | { | |
44 | return apply_impl( std::forward< Fn >( fn), | |
45 | std::forward< Tpl >( tpl), | |
46 | make_index_sequence< std::tuple_size< typename std::decay< Tpl >::type >::value >{}); | |
47 | } | |
48 | ||
49 | }}} | |
50 | ||
51 | #ifdef BOOST_HAS_ABI_HEADERS | |
52 | #include BOOST_ABI_SUFFIX | |
53 | #endif | |
54 | ||
55 | #endif // BOOST_CONTEXT_DETAIL_APPLY_H |