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@IBInspectable and @GKInspectable both work via the Objective-C runtime. SE-0160 made them imply @objc, but doing so made it an error to define an @IBInspectable or @GKInspectable property with a type that could not be expressed in Objective-C. The attribute is useless, but this broke Swift 3 code. So, downgrade the error to a warning in Swift 3 compatibility mode, with a Fix-It to remove the useless attribute. It remains an error in Swift 4. Fixes rdar://problem/31408971.
33 lines
1.2 KiB
Swift
33 lines
1.2 KiB
Swift
// RUN: %target-swift-frontend -disable-objc-attr-requires-foundation-module -typecheck -verify %s -swift-version 4 -enable-source-import -I %S/Inputs
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// REQUIRES: objc_interop
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import Foundation
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class ObjCSubclass : NSObject {
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func foo() { } // expected-note{{add '@objc' to expose this instance method to Objective-C}}
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}
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class DynamicMembers {
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dynamic func foo() { } // expected-error{{'dynamic' instance method 'foo()' must also be '@objc'}}{{3-3=@objc }}
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dynamic var bar: NSObject? = nil
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// expected-error@-1{{'dynamic' var 'bar' must also be '@objc'}}{{3-3=@objc }}
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}
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func test(sc: ObjCSubclass, dm: DynamicMembers) {
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_ = #selector(sc.foo) // expected-error{{argument of '#selector' refers to instance method 'foo()' that is not exposed to Objective-C}}
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_ = #selector(getter: dm.bar)
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_ = #keyPath(DynamicMembers.bar)
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}
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struct PlainStruct { }
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class BadInSwift4 {
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@IBInspectable var badIBInspectable: PlainStruct?
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// expected-error@-1{{property cannot be marked @IBInspectable because its type cannot be represented in Objective-C}}
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@GKInspectable var badGKInspectable: PlainStruct?
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// expected-error@-1{{property cannot be marked @GKInspectable because its type cannot be represented in Objective-C}}
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}
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