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// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CORE_FXCRT_AUTORESTORER_H_
#define CORE_FXCRT_AUTORESTORER_H_
namespace fxcrt {
template <typename T>
class AutoRestorer {
public:
explicit AutoRestorer(T* location)
: m_Location(location), m_OldValue(*location) {}
~AutoRestorer() {
if (m_Location)
*m_Location = m_OldValue;
}
void AbandonRestoration() { m_Location = nullptr; }
private:
T* m_Location;
const T m_OldValue;
};
} // namespace fxcrt
using fxcrt::AutoRestorer;
#endif // CORE_FXCRT_AUTORESTORER_H_
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