mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
#ifndef SPROUT_VARIANT_TUPLE_HPP
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#define SPROUT_VARIANT_TUPLE_HPP
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#include <cstddef>
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#include <tuple>
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#include <sprout/config.hpp>
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#include <sprout/variant/variant.hpp>
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#include <sprout/utility/move.hpp>
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#include <sprout/tuple/tuple/get.hpp>
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namespace sprout {
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//
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// tuple_get
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//
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template<std::size_t I, typename... Types>
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inline SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<
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I,
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sprout::variant<Types...>
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>::type const&
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tuple_get(sprout::variant<Types...> const& t) {
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return t.template get_at<I>();
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}
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template<std::size_t I, typename... Types>
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inline SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<
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I,
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sprout::variant<Types...>
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>::type&
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tuple_get(sprout::variant<Types...>& t) {
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return t.template get_at<I>();
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}
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template<std::size_t I, typename... Types>
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inline SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<
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I,
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sprout::variant<Types...>
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>::type&&
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tuple_get(sprout::variant<Types...>&& t) {
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return sprout::move(sprout::tuples::get<I>(t));
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}
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} // namespace sprout
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namespace std {
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//
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// tuple_size
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//
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template<typename... Types>
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struct tuple_size<sprout::variant<Types...> >
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: public std::tuple_size<typename sprout::variant<Types...>::tuple_type>
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{};
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//
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// tuple_element
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//
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template<std::size_t I, typename... Types>
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struct tuple_element<I, sprout::variant<Types...> >
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: public std::tuple_element<I, typename sprout::variant<Types...>::tuple_type>
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{};
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} // namespace std
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#endif // #ifndef SPROUT_VARIANT_TUPLE_HPP
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