Codable と Equatable を兼ね合わせた protocol.
JSON に変換して比較をしたり、Dictionary 型を返すこともできる.
// | |
// Jsonable.swift | |
// | |
// MIT License | |
// | |
// Copyright (c) 2018 tanjo | |
// | |
// 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. | |
import Foundation | |
protocol Jsonable: Codable, Equatable { | |
} | |
extension Jsonable { | |
public static func ==(lhs: Self, rhs: Self) -> Bool { | |
return lhs.toJson() == rhs.toJson() | |
} | |
func toDictionary() -> [String: Any] { | |
guard let jsonData = try? JSONEncoder().encode(self) else { | |
return [:] | |
} | |
guard let dict = try? JSONSerialization.jsonObject(with: jsonData, options: []) as? [String: Any], let jsonObject = dict else { | |
return [:] | |
} | |
return jsonObject | |
} | |
func toJson() -> String { | |
guard let jsonData = try? JSONEncoder().encode(self) else { | |
return "" | |
} | |
guard let jsonString = String(data: jsonData, encoding: .utf8) else { | |
return "" | |
} | |
return jsonString | |
} | |
static func fromJson(string: String?) -> Self? { | |
return fromJson(data: string?.data(using: .utf8)) | |
} | |
static func fromJson(data: Data?) -> Self? { | |
guard let jsonData = data else { | |
return nil | |
} | |
return try? JSONDecoder().decode(self, from: jsonData) | |
} | |
} |