34 lines
929 B
C++
34 lines
929 B
C++
// Copyright 2022 Google LLC. All rights reserved.
|
|
//
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file or at
|
|
// https://developers.google.com/open-source/licenses/bsd
|
|
|
|
#ifndef PACKAGER_FLAG_SAVER_H_
|
|
#define PACKAGER_FLAG_SAVER_H_
|
|
|
|
#include <absl/flags/flag.h>
|
|
|
|
namespace shaka {
|
|
|
|
/// A replacement for gflags' FlagSaver, which is used in testing.
|
|
/// A FlagSaver is an RAII object to save and restore the values of
|
|
/// command-line flags during a test. Unlike the gflags version, flags to be
|
|
/// saved and restored must be listed explicitly.
|
|
template <typename T>
|
|
class FlagSaver {
|
|
public:
|
|
FlagSaver(absl::Flag<T>* flag)
|
|
: flag_(flag), original_value_(absl::GetFlag(*flag)) {}
|
|
|
|
~FlagSaver() { absl::SetFlag(flag_, original_value_); }
|
|
|
|
private:
|
|
absl::Flag<T>* flag_; // unowned
|
|
T original_value_;
|
|
};
|
|
|
|
} // namespace shaka
|
|
|
|
#endif // PACKAGER_FLAG_SAVER_H_
|