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When synthesizing the default initializer for an actor, we'd sometimes hit a cycle when that initializer needs to chain to NSObject.init. The cycle only happens because we ask if the initializer we're trying to synthesize is a convenience init in a scenario which only applies to non-final classes. Since all actors are effectively "final" classes, it's valid to workaround the cycle by only asking that initializer question for non-final classes, thus breaking the cycle.
62 lines
2.5 KiB
Swift
62 lines
2.5 KiB
Swift
// RUN: %target-typecheck-verify-swift -disable-availability-checking
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// REQUIRES: concurrency
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// REQUIRES: objc_interop
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import Foundation
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func g(_ selector: Selector) -> Int { }
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actor A {
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func selectors() {
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_ = #selector(type(of: self).f) // expected-error{{argument of '#selector' refers to instance method 'f()' that is not exposed to Objective-C}}
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_ = #selector(type(of: self).g) // expected-error{{argument of '#selector' refers to instance method 'g()' that is not exposed to Objective-C}}
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_ = #selector(type(of: self).h)
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}
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func keypaths() {
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_ = #keyPath(A.w) // expected-error {{'#keyPath' refers to non-'@objc' property 'w'}}
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// expected-error@+1 {{cannot form key path to actor-isolated property 'x'}}
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_ = #keyPath(A.x) // expected-error{{argument of '#keyPath' refers to non-'@objc' property 'x'}}
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// expected-error@+1 {{cannot form key path to actor-isolated property 'y'}}
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_ = #keyPath(A.y) // expected-error{{argument of '#keyPath' refers to non-'@objc' property 'y'}}
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// expected-error@+1 {{cannot form key path to actor-isolated property 'computed'}}
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_ = #keyPath(A.computed) // expected-error{{argument of '#keyPath' refers to non-'@objc' property 'computed'}}
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}
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let w: Int = 0 // expected-note{{add '@objc' to expose this property to Objective-C}}
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var x: Int = 0 // expected-note{{add '@objc' to expose this property to Objective-C}}
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@objc var y: Int = 0 // expected-note{{add '@objc' to expose this property to Objective-C}}
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// expected-error@-1{{actor-isolated property 'y' cannot be @objc}}
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// expected-note@+1 {{add '@objc' to expose this property to Objective-C}}
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@objc var computed : Int { // expected-error{{actor-isolated property 'computed' cannot be @objc}}
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get { 120 }
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}
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func f() { } // expected-note{{add '@objc' to expose this instance method to Objective-C}}
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func g() { } // expected-note{{add '@objc' to expose this instance method to Objective-C}}
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@objc func h() async { }
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}
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actor Dril: NSObject {
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// expected-note@+2 {{add 'async' to function 'postSynchronouslyTo(twitter:)' to make it asynchronous}}
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// expected-error@+1 {{actor-isolated instance method 'postSynchronouslyTo(twitter:)' cannot be @objc}}
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@objc func postSynchronouslyTo(twitter msg: String) -> Bool {
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return true
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}
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@MainActor
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@objc func postFromMainActorTo(twitter msg: String) -> Bool {
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return true
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}
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}
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// makes sure the synthesized init's delegation kind is determined correctly.
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actor Pumpkin: NSObject {}
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