core/fxcrt/cfx_autorestorer.h

// 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_CFX_AUTORESTORER_H_
#define CORE_FXCRT_CFX_AUTORESTORER_H_

template <typename T>
class CFX_AutoRestorer {
 public:
  explicit CFX_AutoRestorer(T* location)
      : m_Location(location), m_OldValue(*location) {}
  ~CFX_AutoRestorer() { *m_Location = m_OldValue; }

 private:
  T* const m_Location;
  const T m_OldValue;
};

#endif  // CORE_FXCRT_CFX_AUTORESTORER_H_