destruction_callback.h

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/**
 
    @file      destruction_callback.h
    @author    Khrapov
    @date      12.12.2021
    @copyright © Nick Khrapov, 2021. All right reserved.
 
**/
#pragma once
 
#include <qx/macros/copyable_movable.h>
 
namespace qx
{
 
/**
 
    @class   destruction_callback
    @brief   Class for RAII: functor passed in constructor will be called in destructor
    @author  Khrapov
    @date    12.12.2021
 
**/
class [[nodiscard]] destruction_callback
{
public:
    using destroyer_type = std::function<void()>;
 
public:
    QX_NONCOPYABLE(destruction_callback);
 
    destruction_callback() noexcept = default;
 
    /**
        @brief  destruction_callback object constructor
        @tparam destroyer_t - callable type
        @param  destroyer   - functor that will be called when object is destroyed
    **/
    template<class destroyer_t>
    destruction_callback(destroyer_t destroyer);
 
    destruction_callback(destruction_callback&& other) noexcept;
 
    destruction_callback& operator=(destruction_callback&& other) noexcept;
 
    ~destruction_callback();
 
private:
    destroyer_type m_Destroyer;
};
 
inline destruction_callback::destruction_callback(destruction_callback&& other) noexcept
{
    std::swap(m_Destroyer, other.m_Destroyer);
}
 
inline destruction_callback& destruction_callback::operator=(destruction_callback&& other) noexcept
{
    std::swap(m_Destroyer, other.m_Destroyer);
    return *this;
}
 
inline destruction_callback::~destruction_callback()
{
    if (m_Destroyer)
        m_Destroyer();
}
 
template<class destroyer_t>
destruction_callback::destruction_callback(destroyer_t destroyer) : m_Destroyer(std::move(destroyer))
{
}
 
} // namespace qx