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/**************************************************************************************************
*
* Copyright (c) 2019-2024 Axera Semiconductor Co., Ltd. All Rights Reserved.
*
* This source file is the property of Axera Semiconductor Co., Ltd. and
* may not be copied or distributed in any isomorphic form without the prior
* written consent of Axera Semiconductor Co., Ltd.
*
**************************************************************************************************/
#pragma once
#include <functional>
#include <vector>
#include <utility>
namespace utilities {
template<typename T>
class scalar_guard {
public:
scalar_guard() = delete;
scalar_guard(T resource, std::function<void(T&)> destructor)
: instance_(resource), destructor_(std::move(destructor)) {}
scalar_guard(std::function<T()> resource_creator, std::function<void(T&)> destructor)
: instance_(resource_creator()), destructor_(std::move(destructor)) {}
scalar_guard(scalar_guard&& other) noexcept
: instance_(std::exchange(other.instance_, T{})), destructor_(std::move(other.destructor_)) {}
scalar_guard& operator=(scalar_guard&& other) noexcept {
if (this != &other) {
instance_ = std::exchange(other.instance_, T{});
destructor_ = std::move(other.destructor_);
}
return *this;
}
scalar_guard(const scalar_guard&) = delete;
scalar_guard& operator=(const scalar_guard&) = delete;
~scalar_guard() noexcept {
if (destructor_) {
destructor_(instance_);
}
}
T& get() {
return instance_;
}
private:
T instance_;
std::function<void(T&)> destructor_;
};
}
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