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AK: Make TemporaryChange not copy the old value twice

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This is necessary for the next commit (and might even help performance
in some very weird cases).

(cherry picked from commit e5f87eb12bdad9dfbf8a825461ac17fdb8457f50;
amended to add a missing include of StdLibExtras.h for move())
This commit is contained in:
Ali Mohammad Pur 2024-10-10 09:57:42 +02:00 committed by Nico Weber
parent 3aec9df468
commit 2502b5713d
1 changed files with 4 additions and 3 deletions
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7
AK/TemporaryChange.h
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@ -7,6 +7,7 @@
#pragma once
#include <AK/Platform.h>
#include <AK/StdLibExtras.h>
namespace AK {
@ -15,11 +16,11 @@ class TemporaryChange {
public:
TemporaryChange(T& variable, T value)
: m_variable(variable)
, m_old_value(variable)
, m_old_value(move(variable))
{
m_variable = value;
m_variable = move(value);
}
~TemporaryChange() { m_variable = m_old_value; }
~TemporaryChange() { m_variable = move(m_old_value); }
private:
T& m_variable;