1 /* 2 * Copyright 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <optional> 20 #include <string> 21 #include <type_traits> 22 23 namespace bluetooth { 24 namespace storage { 25 26 // A config serializable module 27 template <typename T> 28 class Serializable { 29 public: 30 Serializable() = default; 31 virtual ~Serializable() = default; 32 33 // GD stack code 34 35 // Serialize to string used in GD stack 36 virtual std::string ToString() const = 0; 37 // T must implement FromString(const std::string&), otherwise, it will fail to compile 38 // Parse string from GD stack FromString(const std::string & str)39 static std::optional<T> FromString(const std::string& str) { 40 return T::FromString(str); 41 } 42 43 // Legacy handling 44 45 // Serialize to string used in legacy stack config, this may not be the same as ToString() 46 virtual std::string ToLegacyConfigString() const = 0; 47 // T must implement FromLegacyConfigString(const std::string&), otherwise, it will fail to compile 48 // Parse string from legacy config FromLegacyConfigString(const std::string & str)49 static std::optional<T> FromLegacyConfigString(const std::string& str) { 50 return T::FromLegacyConfigString(str); 51 } 52 }; 53 54 } // namespace storage 55 } // namespace bluetooth