Swift Foundation - JSONValue: Codable.md

import Foundation

enum JSONValue: Codable {
    case string(String)
    case int(Int)
    case double(Double)
    case bool(Bool)
    case object([String: JSONValue])
    case array([JSONValue])

    public init(from decoder: Decoder) throws {
        let container = try decoder.singleValueContainer()

        if let value = try? container.decode(String.self) {
            self = .string(value)
        } else if let value = try? container.decode(Int.self) {
            self = .int(value)
        } else if let value = try? container.decode(Double.self) {
            self = .double(value)
        } else if let value = try? container.decode(Bool.self) {
            self = .bool(value)
        } else if let value = try? container.decode([String: JSONValue].self) {
            self = .object(value)
        } else if let value = try? container.decode([JSONValue].self) {
            self = .array(value)
        } else {
            throw DecodingError.typeMismatch(JSONValue.self, DecodingError.Context(codingPath: container.codingPath, debugDescription: "Not a JSON Value"))
        }
    }

    func encode(to encoder: Encoder) throws {
        var container = encoder.singleValueContainer()

        switch self {
        case .string(let value):
            try container.encode(value)
        case .int(let value):
            try container.encode(value)
        case .double(let value):
            try container.encode(value)
        case .bool(let value):
            try container.encode(value)
        case .object(let value):
            try container.encode(value)
        case .array(let value):
            try container.encode(value)
        }
    }
}