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// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
#include <type_traits>
#include "pw_polyfill/standard_library/namespace.h"
_PW_POLYFILL_BEGIN_NAMESPACE_STD
template <typename T>
constexpr remove_reference_t<T>&& move(T&& object) {
return (remove_reference_t<T>&&)object;
}
template <typename T>
constexpr T&& forward(remove_reference_t<T>& value) {
return static_cast<T&&>(value);
}
template <typename T>
constexpr T&& forward(remove_reference_t<T>&& value) {
return static_cast<T&&>(value);
}
// Forward declare these classes, which are specialized in other headers.
template <decltype(sizeof(0)), typename>
struct tuple_element;
template <typename>
struct tuple_size;
template <typename T, T... kSequence>
class integer_sequence;
template <decltype(sizeof(0))... kSequence>
using index_sequence = integer_sequence<decltype(sizeof(0)), kSequence...>;
template <typename T, T kEnd>
#if __has_builtin(__make_integer_seq)
using make_integer_sequence = __make_integer_seq<integer_sequence, T, kEnd>;
#elif __has_builtin(__integer_pack)
using make_integer_sequence = integer_sequence<T, __integer_pack(kEnd)...>;
#endif // make_integer_sequence
template <decltype(sizeof(0)) kEnd>
using make_index_sequence = make_integer_sequence<decltype(sizeof(0)), kEnd>;
struct in_place_t {
explicit constexpr in_place_t() = default;
};
inline constexpr in_place_t in_place{};
_PW_POLYFILL_END_NAMESPACE_STD
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