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54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2014 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_TUPLE_TUPLE_TUPLE_ACCESS_TRAITS_HPP
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#define SPROUT_TUPLE_TUPLE_TUPLE_ACCESS_TRAITS_HPP
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#include <tuple>
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#include <sprout/config.hpp>
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#include <sprout/workaround/std/cstddef.hpp>
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#include <sprout/tuple/tuple/tuple_element.hpp>
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namespace sprout {
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namespace tuples {
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//
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// tuple_access_traits
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//
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template<typename Tuple>
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struct tuple_access_traits {
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public:
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template<std::size_t I>
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static SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, Tuple>::type&
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tuple_get(Tuple& t) SPROUT_NOEXCEPT {
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return std::get<I>(t);
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}
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template<std::size_t I>
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static SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, Tuple>::type&&
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tuple_get(Tuple&& t) SPROUT_NOEXCEPT {
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return std::get<I>(t);
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}
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template<std::size_t I>
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static SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, Tuple>::type const&
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tuple_get(Tuple const& t) SPROUT_NOEXCEPT {
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return std::get<I>(t);
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}
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};
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template<typename Tuple>
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struct tuple_access_traits<Tuple const> {
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public:
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template<std::size_t I>
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static SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, Tuple>::type const&
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tuple_get(Tuple const& t) SPROUT_NOEXCEPT {
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return sprout::tuples::tuple_access_traits<Tuple>::template tuple_get<I>(t);
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}
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};
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} // namespace tuples
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using sprout::tuples::tuple_access_traits;
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} // namespace sprout
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#endif // #ifndef SPROUT_TUPLE_TUPLE_TUPLE_ACCESS_TRAITS_HPP
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