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30 lines
736 B
C++
30 lines
736 B
C++
#ifndef FTXUI_UTIL_AUTORESET_HPP
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#define FTXUI_UTIL_AUTORESET_HPP
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#include <utility>
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namespace ftxui {
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/// Assign a value to a variable, reset its old value when going out of scope.
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template <typename T>
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class AutoReset {
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public:
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AutoReset(T* variable, T new_value)
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: variable_(variable), previous_value_(std::move(*variable)) {
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*variable_ = std::move(new_value);
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}
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~AutoReset() { *variable_ = std::move(previous_value_); }
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private:
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T* variable_;
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T previous_value_;
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};
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} // namespace ftxui
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#endif /* end of include guard: FTXUI_UTIL_AUTORESET_HPP */
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// Copyright 2020 Arthur Sonzogni. All rights reserved.
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// Use of this source code is governed by the MIT license that can be found in
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// the LICENSE file.
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