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// RUN: %target-typecheck-verify-swift
// REQUIRES: objc_interop
import Foundation
// Tests for correct detection of the "objc_in_generic_extension" error,
// declared in {Swift Source}/include/swift/AST/DiagnosticsSema.def
// Test "0 levels" deep
class A<T> : NSObject {
init(a: ()) {
super.init()
}
}
extension A {
// This should throw an error
@objc func a1() {} // expected-error{{extensions of generic classes cannot contain '@objc' members}}
// This should *not* throw an error
func a2() {}
}
// Test "1 level" deep
class B : A<Int> {
init(b: ()) {
super.init(a: ())
}
}
extension B {
// This is supported now
@objc func b1() {}
func b2() {}
}
// Test "many levels" deep
class C : B {}
class D : C {
init(d: ()) {
super.init(b: ())
}
}
extension D {
// This is supported now
@objc func d1() {}
func d2() {}
}
class Outer<T> {
class Inner {}
}
extension Outer.Inner {
@objc func outerInner1() {}
// expected-error@-1{{extensions of classes from generic context cannot contain '@objc' members}}
func outerInner2() {}
}
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