Files
azerothcore-wotlk/src/common/Utilities/Tuples.h
2021-05-31 14:21:54 +02:00

54 lines
1.4 KiB
C++

/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
* Copyright (C) 2021+ WarheadCore <https://github.com/WarheadCore>
*/
#ifndef Tuples_h__
#define Tuples_h__
#include <tuple>
namespace Acore
{
template <typename T, typename Tuple>
struct has_type;
template <typename T, typename... Us>
struct has_type<T, std::tuple<Us...>> : std::disjunction<std::is_same<T, Us>...>
{
};
template <typename T, typename... Us>
constexpr bool has_type_v = has_type<T, Us...>::value;
template<typename>
struct is_tuple : std::false_type
{
};
template<typename... Ts>
struct is_tuple<std::tuple<Ts...>> : std::true_type
{
};
template<typename... Ts>
constexpr bool is_tuple_v = is_tuple<Ts...>::value;
namespace Impl
{
template <class T, class Tuple, size_t... I>
T* new_from_tuple(Tuple&& args, std::index_sequence<I...>)
{
return new T(std::get<I>(std::forward<Tuple>(args))...);
}
}
template<class T, class Tuple>
[[nodiscard]] T* new_from_tuple(Tuple&& args)
{
return Impl::new_from_tuple<T>(std::forward<Tuple>(args), std::make_index_sequence<std::tuple_size_v<std::remove_reference_t<Tuple>>>{});
}
}
#endif // Tuples_h__