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51 lines
1.6 KiB
Swift
51 lines
1.6 KiB
Swift
// RUN: %target-typecheck-verify-swift -dump-ast > %t.dump
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// RUN: %FileCheck %s < %t.dump
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// https://github.com/apple/swift/issues/56212
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extension Optional {
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func member1() -> S1? {}
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static func member2() -> S1? {}
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static func member3() -> S1? {}
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static var member_wrongType: Int { get {} }
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static var member_overload: S1 { get {} }
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init(overloaded: Void) {}
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}
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protocol P1 {}
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extension Optional: P1 where Wrapped: Equatable {
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static func member4() {}
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}
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struct S1 {
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static var member1: S1? = S1()
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static var member2: S1? = S1()
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static func member3() -> S1? {}
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static var member4: S1? { get {} }
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static var member_wrongType: S1? { get {} }
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static var member_overload: S1? { get {} }
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init(overloaded: Void) {}
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init?(failable: Void) {}
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init() {}
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}
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let _: S1? = .member1
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let _: S1? = .member_wrongType
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let _: S1? = .init()
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let _: S1? = .member1() // expected-error {{instance member 'member1' cannot be used on type 'S1?'}}
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let _: S1? = .member2()
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let _: S1? = .init(S1())
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let _: S1? = .init(overloaded: ())
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// If members exist on Optional and Wrapped, always choose the one on optional
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// CHECK: declref_expr {{.*}} location={{.*}}optional_overload.swift:40
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// CHECK-SAME: decl=optional_overload.(file).Optional extension.init(overloaded:)
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let _: S1? = .member_overload
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// Should choose the overload from Optional even if the Wrapped overload would otherwise have a better score
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// CHECK: member_ref_expr {{.*}} location={{.*}}optional_overload.swift:44
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// CHECK-SAME: decl=optional_overload.(file).Optional extension.member_overload
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let _: S1? = .init(failable: ())
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let _: S1? = .member3()
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let _: S1? = .member4
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