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Sprout/sprout/variant/get.hpp
2012-09-29 18:41:13 +09:00

45 lines
1.2 KiB
C++

#ifndef SPROUT_VARIANT_GET_HPP
#define SPROUT_VARIANT_GET_HPP
#include <cstddef>
#include <sprout/config.hpp>
#include <sprout/tuple/tuple/get.hpp>
#include <sprout/variant/variant.hpp>
namespace sprout {
//
// get
//
template<typename U, typename... Types>
inline SPROUT_CONSTEXPR U const& get(sprout::variant<Types...> const& operand) {
return operand.template get<U>();
}
template<typename U, typename... Types>
inline SPROUT_CONSTEXPR U& get(sprout::variant<Types...>& operand) {
return operand.template get<U>();
}
} // namespace sprout
namespace sprout_adl {
//
// tuple_get
//
template<std::size_t I, typename... Types>
inline SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<
I,
sprout::variant<Types...>
>::type const&
tuple_get(sprout::variant<Types...> const& operand) {
return operand.template get_at<I>();
}
template<std::size_t I, typename... Types>
inline SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<
I,
sprout::variant<Types...>
>::type&
tuple_get(sprout::variant<Types...>& operand) {
return operand.template get_at<I>();
}
} // namespace sprout_adl
#endif // #ifndef SPROUT_VARIANT_GET_HPP