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Add mode to AutoRestoreBackup to not change backed up value

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Jonathan G Rennison
2023-02-15 21:13:07 +00:00
parent 2b4b2f605d
commit 85889143c7
1 changed files with 9 additions and 0 deletions
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9
src/core/backup_type.hpp
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@@ -144,6 +144,8 @@ private:
const int line; const int line;
}; };
struct AutoRestoreBackupNoNewValueTag {};
/** /**
* Class to backup a specific variable and restore it upon destruction of this object to prevent * Class to backup a specific variable and restore it upon destruction of this object to prevent
* stack values going out of scope before resetting the global to its original value. Contrary to * stack values going out of scope before resetting the global to its original value. Contrary to
@@ -157,6 +159,13 @@ struct AutoRestoreBackup {
* the whole goal and reason for existing of this object. * the whole goal and reason for existing of this object.
*/ */
/**
* Backup variable.
* @param original Variable to backup.
* @param tag Tag to indicate that the variable's value should not be changed.
*/
AutoRestoreBackup(T &original, AutoRestoreBackupNoNewValueTag tag) : original(original), original_value(original) {}
/** /**
* Backup variable and switch to new value. * Backup variable and switch to new value.
* @param original Variable to backup. * @param original Variable to backup.