WinterGram/third-party/XMLCoder/Sources/Auxiliaries/Box/ChoiceBox.swift
2026-04-24 23:19:15 +04:00

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)
}
}