41 lines
959 B
Swift
41 lines
959 B
Swift
// Copyright (c) 2019-2020 XMLCoder contributors
|
|
//
|
|
// This software is released under the MIT License.
|
|
// https://opensource.org/licenses/MIT
|
|
//
|
|
// Created by James Bean on 7/18/19.
|
|
//
|
|
|
|
/// A `Box` which represents an element which is known to contain an XML choice element.
|
|
struct ChoiceBox {
|
|
var key: String = ""
|
|
var element: Box = NullBox()
|
|
}
|
|
|
|
extension ChoiceBox: Box {
|
|
var isNull: Bool {
|
|
return false
|
|
}
|
|
|
|
var xmlString: String? {
|
|
return nil
|
|
}
|
|
}
|
|
|
|
extension ChoiceBox: SimpleBox {}
|
|
|
|
extension ChoiceBox {
|
|
init?(_ keyedBox: KeyedBox) {
|
|
guard
|
|
let firstKey = keyedBox.elements.keys.first,
|
|
let firstElement = keyedBox.elements[firstKey].first
|
|
else {
|
|
return nil
|
|
}
|
|
self.init(key: firstKey, element: firstElement)
|
|
}
|
|
|
|
init(_ singleKeyedBox: SingleKeyedBox) {
|
|
self.init(key: singleKeyedBox.key, element: singleKeyedBox.element)
|
|
}
|
|
}
|