mirror of https://github.com/ARMmbed/mbed-os.git
78 lines
2.1 KiB
Plaintext
78 lines
2.1 KiB
Plaintext
/* mbed Microcontroller Library
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* Copyright (c) 2019 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MSTD_UTILITY_
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#define MSTD_UTILITY_
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/* <mstd_utility>
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*
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* - includes toolchain's <utility>
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* - For ARM C 5, standard C++11/14 features:
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* - include <initializer_list>
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* - std::move, std::forward, std::exchange
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* - std::declval
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* - std::integer_sequence
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* - include <algorithm> to get default std::swap
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* - mstd::swap - substitute for std::swap that can move
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* - std::swap(array)
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* - Swap assistance, to ensure moves happen on ARM C 5
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* - mstd::swap - alias for std::swap, or a local moving implementation for ARM C 5
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* - For all toolchains, C++17/20 backports:
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* - mstd::as_const
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*/
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#include <utility>
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namespace mstd {
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namespace rel_ops { using namespace std::rel_ops; }
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using std::initializer_list;
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using std::exchange;
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using std::forward;
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using std::move;
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// No exceptions in mbed OS
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template <typename T>
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T &&move_if_noexcept(T &t) noexcept
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{
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return mstd::move(t);
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}
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using std::declval;
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using std::make_pair;
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using std::get;
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using std::pair;
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using std::integer_sequence;
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using std::index_sequence;
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using std::make_integer_sequence;
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using std::make_index_sequence;
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using std::index_sequence_for;
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using std::swap;
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// C++17 [utility.as_const] */
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#if __cpp_lib_as_const >= 201510
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using std::as_const;
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#else
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template <typename _TypeT>
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constexpr std::add_const_t<_TypeT> &as_const(_TypeT &__t) noexcept
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{
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return __t;
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}
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template <typename _TypeT>
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void as_const(_TypeT &&) = delete;
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#endif
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} // namespace mstd
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#endif // MSTD_UTILITY_
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