TrinityCore
Tuples.h
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1/*
2 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef Tuples_h__
19#define Tuples_h__
20
21#include <tuple>
22
23namespace Trinity
24{
25 template <typename T, typename Tuple>
26 struct has_type;
27
28 template <typename T, typename... Us>
29 struct has_type<T, std::tuple<Us...>> : std::disjunction<std::is_same<T, Us>...>
30 {
31 };
32
33 template <typename T, typename... Us>
34 constexpr bool has_type_v = has_type<T, Us...>::value;
35
36 template<typename>
37 struct is_tuple : std::false_type
38 {
39 };
40
41 template<typename... Ts>
42 struct is_tuple<std::tuple<Ts...>> : std::true_type
43 {
44 };
45
46 template<typename... Ts>
47 constexpr bool is_tuple_v = is_tuple<Ts...>::value;
48
49 namespace Impl
50 {
51 template <class T, class Tuple, size_t... I>
52 T* new_from_tuple(Tuple&& args, std::index_sequence<I...>)
53 {
54 return new T(std::get<I>(std::forward<Tuple>(args))...);
55 }
56 }
57
58 template<class T, class Tuple>
59 [[nodiscard]] T* new_from_tuple(Tuple&& args)
60 {
61 return Impl::new_from_tuple<T>(std::forward<Tuple>(args), std::make_index_sequence<std::tuple_size_v<std::remove_reference_t<Tuple>>>{});
62 }
63}
64
65#endif // Tuples_h__
T * new_from_tuple(Tuple &&args, std::index_sequence< I... >)
Definition: Tuples.h:52
T * new_from_tuple(Tuple &&args)
Definition: Tuples.h:59
constexpr bool has_type_v
Definition: Tuples.h:34
constexpr bool is_tuple_v
Definition: Tuples.h:47
STL namespace.