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A Swift method in an extension cannot override a method nor can it be overridden by a method. Diagnose this. We may remove this limitation at a later time. An [objc] method in an extension can override and can be overridden, so specifically allow this case. It's useful in our Foundation bindings. Swift SVN r4308
41 lines
1021 B
Swift
41 lines
1021 B
Swift
// RUN: %swift -parse %s -verify -parse-as-library
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class A {
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func f1() { } // expected-note{{overridden declaration is here}}
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func f2() -> A { } // expected-note{{overridden declaration is here}}
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func [objc] f3() { }
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func [objc] f4() -> A { }
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}
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extension A {
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func f5() { } // expected-note{{overridden declaration is here}}
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func f6() -> A { } // expected-note{{overridden declaration is here}}
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func [objc] f7() { }
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func [objc] f8() -> A { }
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}
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class B : A { }
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extension B {
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func f1() { } // expected-error{{declarations in extensions cannot override yet}}
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func f2() -> B { } // expected-error{{declarations in extensions cannot override yet}}
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func f3() { }
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func f4() -> B { }
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func f5() { } // expected-error{{declarations from extensions cannot be overridden yet}}
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func f6() -> A { } // expected-error{{declarations from extensions cannot be overridden yet}}
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func [objc] f7() { }
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func [objc] f8() -> A { }
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}
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func callOverridden(b : B) {
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b.f3()
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b.f4()
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b.f7()
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b.f8()
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}
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