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/*
* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef TEST_SCOPED_KEY_VALUE_CONFIG_H_
#define TEST_SCOPED_KEY_VALUE_CONFIG_H_
#include <functional>
#include <map>
#include <memory>
#include <string>
#include "absl/strings/string_view.h"
#include "api/field_trials_registry.h"
#include "test/field_trial.h"
namespace webrtc {
namespace test {
class ScopedKeyValueConfig : public FieldTrialsRegistry {
public:
virtual ~ScopedKeyValueConfig();
ScopedKeyValueConfig();
explicit ScopedKeyValueConfig(absl::string_view s);
ScopedKeyValueConfig(ScopedKeyValueConfig& parent, absl::string_view s);
private:
ScopedKeyValueConfig(ScopedKeyValueConfig* parent, absl::string_view s);
ScopedKeyValueConfig* GetRoot(ScopedKeyValueConfig* n);
std::string GetValue(absl::string_view key) const override;
std::string LookupRecurse(absl::string_view key) const;
ScopedKeyValueConfig* const parent_;
// The leaf in a list of stacked ScopedKeyValueConfig.
// Only set on root (e.g with parent_ == nullptr).
const ScopedKeyValueConfig* leaf_;
// Unlike std::less<std::string>, std::less<> is transparent and allows
// heterogeneous lookup directly with absl::string_view.
std::map<std::string, std::string, std::less<>> key_value_map_;
std::unique_ptr<ScopedFieldTrials> scoped_field_trials_;
};
} // namespace test
} // namespace webrtc
#endif // TEST_SCOPED_KEY_VALUE_CONFIG_H_
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