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@kmkrn
Created December 17, 2017 20:07
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protocol DogBreed {
typealias Level = Int
var breedName: String { get set }
var size: Level { get set }
var health: Level { get set }
var adaptability: Level { get set }
var intelligence: Level { get set }
var dogType: DogType { get set }
}
enum DogType: String {
case companion = "companion"
case sled = "sled dog"
}
class SiberianHusky: DogBreed {
var breedName: String
var size: Level
var health: Level
var adaptability: Level
var intelligence: Level
var dogType: DogType
init() {
self.breedName = "Husky"
self.size = 3
self.health = 4
self.adaptability = 3
self.intelligence = 3
self.dogType = .sled
}
}
let husky = SiberianHusky()
let huskyMirror = Mirror(reflecting: husky)
for case let (label?, value) in huskyMirror.children {
print(label, value)
}
//prints:
//breedName Husky
//size 3
//health 4
//adaptability 3
//intelligence 3
//dogType sled
class Pomsky: SiberianHusky {
override init() {
super.init()
self.breedName = "Pomsky"
self.size = 2
self.dogType = .companion
}
}
extension Pomsky: CustomReflectable {
var customMirror: Mirror {
return Mirror(Pomsky.self, children: ["name": self.breedName , "size": self.size, "type" : self.dogType], displayStyle: .class, ancestorRepresentation: .generated)
}
}
let pomsky = Pomsky()
let pomskyMirror = Mirror(reflecting: pomsky)
for case let (label?, value) in pomskyMirror.children {
print(label, value)
}
//prints
//name Pomsky
//size 2
//type companion
pomskyMirror.displayStyle
class DogOwner {
var name: String
var dog: DogBreed
init(name: String, dog: DogBreed) {
self.name = name
self.dog = dog
}
}
let owner = DogOwner(name: "Pete", dog: husky)
let ownerMirror = Mirror(reflecting: owner)
print ("Pete owns a \(ownerMirror.descendant("dog", "breedName") ?? "some dog")")
//prints
//Pete owns a Husky
let children = ownerMirror.children
for child in children {
if child.label == "dog" {
let grandChildren = Mirror(reflecting: child.value).children
Mirror(reflecting: child.value).children
for grand in grandChildren {
if grand.label == "breedName" {
print("Pete owns a \(grand.value)")
}
}
}
}
//prints
//Pete owns a Husky
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