mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
38fdb6b7ff
Completely mechanical changes: - Explicit @objc in a few places - Some imported APIs changed - For the mix-and-match tests, just test version 4/5 instead of 3/4
134 lines
3.3 KiB
Swift
134 lines
3.3 KiB
Swift
// RUN: %target-run-simple-swift | %FileCheck %s
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// REQUIRES: executable_test
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// REQUIRES: objc_interop
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import Foundation
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struct Guts {
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var internalValue = 42
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var value: Int {
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get {
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return internalValue
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}
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}
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}
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class Target : NSString {
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// This dynamic property is observed by KVO
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@objc dynamic var objcValue: String
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// This Swift-typed property causes vtable usage on this class.
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var swiftValue: Guts
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override init() {
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self.swiftValue = Guts()
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self.objcValue = ""
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super.init()
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}
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required init?(coder aDecoder: NSCoder) {
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self.swiftValue = Guts()
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self.objcValue = ""
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super.init(coder: aDecoder)
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}
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required init(itemProviderData data: Data, typeIdentifier: String) throws {
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fatalError("don't call this initializer")
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}
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func print() {
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Swift.print("swiftValue \(self.swiftValue.value), objcValue \(objcValue)")
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}
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}
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class Observer : NSObject {
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var target: Target?
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override init() { target = nil; super.init() }
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func observeTarget(_ t: Target) {
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target = t
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target!.addObserver(self, forKeyPath:"objcValue",
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options: [.new, .old],
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context: nil)
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}
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override func observeValue(forKeyPath: String?,
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of obj: Any?,
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change: Dictionary<NSKeyValueChangeKey, Any>?,
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context: UnsafeMutableRawPointer?) {
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target!.print()
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}
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}
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var t = Target()
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var o = Observer()
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print("unobserved")
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// CHECK: unobserved
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t.objcValue = "one"
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t.objcValue = "two"
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print("registering observer")
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// CHECK-NEXT: registering observer
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o.observeTarget(t)
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print("Now witness the firepower of this fully armed and operational panopticon!")
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// CHECK-NEXT: panopticon
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t.objcValue = "three"
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// CHECK-NEXT: swiftValue 42, objcValue three
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t.objcValue = "four"
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// CHECK-NEXT: swiftValue 42, objcValue four
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//===----------------------------------------------------------------------===//
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// Test using a proper global context reference.
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//===----------------------------------------------------------------------===//
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var kvoContext = Int()
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class ObserverKVO : NSObject {
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var target: Target?
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override init() { target = nil; super.init() }
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func observeTarget(_ target: Target) {
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self.target = target
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self.target!.addObserver(self,
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forKeyPath: "objcValue",
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options: [.new, .old],
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context: &kvoContext)
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}
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func removeTarget() {
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self.target!.removeObserver(self, forKeyPath:"objcValue",
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context: &kvoContext)
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}
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override func observeValue(forKeyPath: String?,
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of obj: Any?,
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change: Dictionary<NSKeyValueChangeKey, Any>?,
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context: UnsafeMutableRawPointer?) {
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if context == &kvoContext {
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target!.print()
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}
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}
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}
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var t2 = Target()
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var o2 = ObserverKVO()
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print("unobserved 2")
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t2.objcValue = "one"
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t2.objcValue = "two"
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print("registering observer 2")
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o2.observeTarget(t2)
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print("Now witness the firepower of this fully armed and operational panopticon!")
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t2.objcValue = "three"
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t2.objcValue = "four"
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o2.removeTarget()
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print("target removed")
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// CHECK: registering observer 2
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// CHECK-NEXT: Now witness the firepower of this fully armed and operational panopticon!
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// CHECK-NEXT: swiftValue 42, objcValue three
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// CHECK-NEXT: swiftValue 42, objcValue four
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// CHECK-NEXT: target removed
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