ladybird/AK/TemporaryChange.h
Ali Mohammad Pur e5f87eb12b AK: Make TemporaryChange not copy the old value twice
This is necessary for the next commit (and might even help performance
in some very weird cases).
2024-10-10 23:53:48 +01:00

33 lines
553 B
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Platform.h>
namespace AK {
template<typename T>
class TemporaryChange {
public:
TemporaryChange(T& variable, T value)
: m_variable(variable)
, m_old_value(move(variable))
{
m_variable = move(value);
}
~TemporaryChange() { m_variable = move(m_old_value); }
private:
T& m_variable;
T m_old_value;
};
}
#if USING_AK_GLOBALLY
using AK::TemporaryChange;
#endif