50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2017, Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
template <typename T>
|
|
class VariableBackup {
|
|
public:
|
|
VariableBackup(T *ptr) : pValue(ptr) {
|
|
oldValue = *ptr;
|
|
}
|
|
VariableBackup(T *ptr, T &&newValue) : pValue(ptr) {
|
|
oldValue = *ptr;
|
|
*pValue = newValue;
|
|
}
|
|
VariableBackup(T *ptr, T &newValue) : pValue(ptr) {
|
|
oldValue = *ptr;
|
|
*pValue = newValue;
|
|
}
|
|
~VariableBackup() {
|
|
*pValue = oldValue;
|
|
}
|
|
void operator=(const T &val) {
|
|
*pValue = val;
|
|
}
|
|
|
|
private:
|
|
T oldValue;
|
|
T *pValue;
|
|
};
|