text: /*
  * Copyright (c) 2019, Nordic Semiconductor
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice, this
  *    list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright notice, this
  *    list of conditions and the following disclaimer in the documentation and/or
  *    other materials provided with the distribution.
  *
  * 3. Neither the name of the copyright holder nor the names of its contributors may
  *    be used to endorse or promote products derived from this software without
  *    specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
  
  import Foundation
  
  public class SceneRange: RangeObject, Codable {
      
      public var firstScene: Address {
          return range.lowerBound
      }
      
      public var lastScene: Address {
          return range.upperBound
      }
      
      // MARK: - Codable
      
      private enum CodingKeys: String, CodingKey {
          case firstScene
          case lastScene
      }
      
      public required convenience init(from decoder: Decoder) throws {
          let container = try decoder.container(keyedBy: CodingKeys.self)
          let firstSceneAsString = try container.decode(String.self, forKey: .firstScene)
          let lastSceneAsString  = try container.decode(String.self, forKey: .lastScene)
          
          guard let firstScene = Scene(hex: firstSceneAsString) else {
              throw DecodingError.dataCorruptedError(forKey: .firstScene, in: container,
                                                     debugDescription: "Scene must be 4-character hexadecimal string")
          }
          guard let lastScene = Scene(hex: lastSceneAsString) else {
              throw DecodingError.dataCorruptedError(forKey: .lastScene, in: container,
                                                     debugDescription: "Scene must be 4-character hexadecimal string")
          }
          self.init(from: firstScene, to: lastScene)
      }
      
      public func encode(to encoder: Encoder) throws {
          var container = encoder.container(keyedBy: CodingKeys.self)
          try container.encode(range.lowerBound.hex, forKey: .firstScene)
          try container.encode(range.upperBound.hex, forKey: .lastScene)
      }
  }
  