如何在类枚举中使用Codable

enum MyEnum: Codable {
    // 枚举定义
}

enum MyEnum: Codable {
    case case1
    case case2
    case case3

    enum CodingKeys: String, CodingKey {
        case case1 = "value1"
        case case2 = "value2"
        case case3 = "value3"
    }
}

enum MyEnum: Codable {
    case case1
    case case2
    case case3

    enum CodingKeys: String, CodingKey {
        case case1 = "value1"
        case case2 = "value2"
        case case3 = "value3"
    }

    func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodingKeys.self)

        switch self {
        case .case1:
            try container.encode("value1", forKey: .case1)
        case .case2:
            try container.encode("value2", forKey: .case2)
        case .case3:
            try container.encode("value3", forKey: .case3)
        }
    }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)

        if container.contains(.case1) {
            self = .case1
        } else if container.contains(.case2) {
            self = .case2
        } else if container.contains(.case3) {
            self = .case3
        } else {
            throw DecodingError.dataCorruptedError(forKey: .case1, in: container, debugDescription: "Invalid enum value")
        }
    }
}

let myEnum = MyEnum.case1
let encoder = JSONEncoder()
let jsonData = try encoder.encode(myEnum)

let decoder = JSONDecoder()
let decodedEnum = try decoder.decode(MyEnum.self, from: jsonData)