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4d41db3b5d
Correct several behaviors of availability checking in unavailable contexts that were inconsistent with the checking model: - Avoid diagnosing unintroduced and obsolted declarations in contexts that are unavailable in the same domain. - Diagnose unavailability normally in type signature contexts.
557 lines
22 KiB
Swift
557 lines
22 KiB
Swift
// RUN: %target-typecheck-verify-swift -swift-version 6
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// REQUIRES: OS=macosx
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public protocol Horse {}
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func takesHorse<T : Horse>(_: T) {}
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func takesHorseExistential(_: Horse) {}
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extension Horse {
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func giddyUp() {}
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var isGalloping: Bool { true }
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}
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struct UsesHorse<T : Horse> {}
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// Unconditional unavailability
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public struct HasUnavailableConformance1 {}
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@available(*, unavailable)
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extension HasUnavailableConformance1 : Horse {}
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// expected-note@-1 7{{conformance of 'HasUnavailableConformance1' to 'Horse' has been explicitly marked unavailable here}}
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func passUnavailableConformance1(x: HasUnavailableConformance1) {
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takesHorse(x) // expected-error {{conformance of 'HasUnavailableConformance1' to 'Horse' is unavailable}}
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takesHorseExistential(x) // expected-error {{conformance of 'HasUnavailableConformance1' to 'Horse' is unavailable}}
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x.giddyUp() // expected-error {{conformance of 'HasUnavailableConformance1' to 'Horse' is unavailable}}
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_ = x.isGalloping // expected-error {{conformance of 'HasUnavailableConformance1' to 'Horse' is unavailable}}
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_ = x[keyPath: \.isGalloping] // expected-error {{conformance of 'HasUnavailableConformance1' to 'Horse' is unavailable}}
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_ = UsesHorse<HasUnavailableConformance1>.self // expected-error {{conformance of 'HasUnavailableConformance1' to 'Horse' is unavailable}}
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}
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@available(*, unavailable)
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func passUnavailableConformance1a(x: HasUnavailableConformance1) {
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasUnavailableConformance1>.self
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}
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// Platform unavailability
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public struct HasUnavailableConformance2 {}
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@available(macOS, unavailable)
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extension HasUnavailableConformance2 : Horse {}
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// expected-note@-1 6{{conformance of 'HasUnavailableConformance2' to 'Horse' has been explicitly marked unavailable here}}
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func passUnavailableConformance2(x: HasUnavailableConformance2) {
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takesHorse(x) // expected-error {{conformance of 'HasUnavailableConformance2' to 'Horse' is unavailable in macOS}}
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takesHorseExistential(x) // expected-error {{conformance of 'HasUnavailableConformance2' to 'Horse' is unavailable in macOS}}
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x.giddyUp() // expected-error {{conformance of 'HasUnavailableConformance2' to 'Horse' is unavailable in macOS}}
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_ = x.isGalloping // expected-error {{conformance of 'HasUnavailableConformance2' to 'Horse' is unavailable in macOS}}
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_ = x[keyPath: \.isGalloping] // expected-error {{conformance of 'HasUnavailableConformance2' to 'Horse' is unavailable in macOS}}
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_ = UsesHorse<HasUnavailableConformance2>.self // expected-error {{conformance of 'HasUnavailableConformance2' to 'Horse' is unavailable in macOS}}
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}
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@available(macOS, unavailable)
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func passUnavailableConformance2a(x: HasUnavailableConformance2) {
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// This is allowed
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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}
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// Swift version unavailability
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public struct HasUnavailableConformance3 {}
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@available(swift 12)
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extension HasUnavailableConformance3 : Horse {}
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// expected-note@-1 6{{conformance of 'HasUnavailableConformance3' to 'Horse' was introduced in Swift 12}}
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func passUnavailableConformance3(x: HasUnavailableConformance3) {
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takesHorse(x) // expected-error {{conformance of 'HasUnavailableConformance3' to 'Horse' is unavailable}}
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takesHorseExistential(x) // expected-error {{conformance of 'HasUnavailableConformance3' to 'Horse' is unavailable}}
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x.giddyUp() // expected-error {{conformance of 'HasUnavailableConformance3' to 'Horse' is unavailable}}
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_ = x.isGalloping // expected-error {{conformance of 'HasUnavailableConformance3' to 'Horse' is unavailable}}
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_ = x[keyPath: \.isGalloping] // expected-error {{conformance of 'HasUnavailableConformance3' to 'Horse' is unavailable}}
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_ = UsesHorse<HasUnavailableConformance3>.self // expected-error {{conformance of 'HasUnavailableConformance3' to 'Horse' is unavailable}}
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}
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@available(swift 12)
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func passUnavailableConformance3a(x: HasUnavailableConformance3) {
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasUnavailableConformance3>.self
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}
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// Platform obsoleted
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public struct HasUnavailableConformance4 {}
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@available(macOS, obsoleted: 10.1)
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extension HasUnavailableConformance4 : Horse {}
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// expected-note@-1 6{{conformance of 'HasUnavailableConformance4' to 'Horse' was obsoleted in macOS 10.1}}
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func passUnavailableConformance4(x: HasUnavailableConformance4) {
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takesHorse(x) // expected-error {{conformance of 'HasUnavailableConformance4' to 'Horse' is unavailable in macOS}}
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takesHorseExistential(x) // expected-error {{conformance of 'HasUnavailableConformance4' to 'Horse' is unavailable in macOS}}
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x.giddyUp() // expected-error {{conformance of 'HasUnavailableConformance4' to 'Horse' is unavailable in macOS}}
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_ = x.isGalloping // expected-error {{conformance of 'HasUnavailableConformance4' to 'Horse' is unavailable}}
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_ = x[keyPath: \.isGalloping] // expected-error {{conformance of 'HasUnavailableConformance4' to 'Horse' is unavailable}}
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_ = UsesHorse<HasUnavailableConformance4>.self // expected-error {{conformance of 'HasUnavailableConformance4' to 'Horse' is unavailable in macOS}}
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}
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@available(macOS, obsoleted: 10.1)
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func passUnavailableConformance4a(x: HasUnavailableConformance4) {
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasUnavailableConformance4>.self
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}
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// Swift obsoleted
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public struct HasUnavailableConformance5 {}
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@available(swift, obsoleted: 4)
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extension HasUnavailableConformance5 : Horse {}
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// expected-note@-1 6{{conformance of 'HasUnavailableConformance5' to 'Horse' was obsoleted in Swift 4}}
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func passUnavailableConformance5(x: HasUnavailableConformance5) {
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takesHorse(x) // expected-error {{conformance of 'HasUnavailableConformance5' to 'Horse' is unavailable}}
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takesHorseExistential(x) // expected-error {{conformance of 'HasUnavailableConformance5' to 'Horse' is unavailable}}
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x.giddyUp() // expected-error {{conformance of 'HasUnavailableConformance5' to 'Horse' is unavailable}}
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_ = x.isGalloping // expected-error {{conformance of 'HasUnavailableConformance5' to 'Horse' is unavailable}}
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_ = x[keyPath: \.isGalloping] // expected-error {{conformance of 'HasUnavailableConformance5' to 'Horse' is unavailable}}
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_ = UsesHorse<HasUnavailableConformance5>.self // expected-error {{conformance of 'HasUnavailableConformance5' to 'Horse' is unavailable}}
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}
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@available(swift, obsoleted: 4)
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func passUnavailableConformance5a(x: HasUnavailableConformance5) {
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasUnavailableConformance5>.self
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}
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// Unavailable with message
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public struct HasUnavailableConformance6 {}
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@available(*, unavailable, message: "This conformance is bad")
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extension HasUnavailableConformance6 : Horse {}
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// expected-note@-1 6{{conformance of 'HasUnavailableConformance6' to 'Horse' has been explicitly marked unavailable here}}
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func passUnavailableConformance6(x: HasUnavailableConformance6) {
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takesHorse(x) // expected-error {{conformance of 'HasUnavailableConformance6' to 'Horse' is unavailable: This conformance is bad}}
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takesHorseExistential(x) // expected-error {{conformance of 'HasUnavailableConformance6' to 'Horse' is unavailable: This conformance is bad}}
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x.giddyUp() // expected-error {{conformance of 'HasUnavailableConformance6' to 'Horse' is unavailable: This conformance is bad}}
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_ = x.isGalloping // expected-error {{conformance of 'HasUnavailableConformance6' to 'Horse' is unavailable: This conformance is bad}}
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_ = x[keyPath: \.isGalloping] // expected-error {{conformance of 'HasUnavailableConformance6' to 'Horse' is unavailable: This conformance is bad}}
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_ = UsesHorse<HasUnavailableConformance6>.self // expected-error {{conformance of 'HasUnavailableConformance6' to 'Horse' is unavailable: This conformance is bad}}
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}
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// Deprecated
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public struct HasDeprecatedConformance1 {}
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@available(*, deprecated)
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extension HasDeprecatedConformance1 : Horse {}
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func passDeprecatedConformance1(x: HasDeprecatedConformance1) {
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takesHorse(x) // expected-warning {{conformance of 'HasDeprecatedConformance1' to 'Horse' is deprecated}}{{documentation-file=deprecated-declaration}}
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takesHorseExistential(x) // expected-warning {{conformance of 'HasDeprecatedConformance1' to 'Horse' is deprecated}}{{documentation-file=deprecated-declaration}}
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x.giddyUp() // expected-warning {{conformance of 'HasDeprecatedConformance1' to 'Horse' is deprecated}}{{documentation-file=deprecated-declaration}}
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_ = x.isGalloping // expected-warning {{conformance of 'HasDeprecatedConformance1' to 'Horse' is deprecated}}{{documentation-file=deprecated-declaration}}
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_ = x[keyPath: \.isGalloping] // expected-warning {{conformance of 'HasDeprecatedConformance1' to 'Horse' is deprecated}}{{documentation-file=deprecated-declaration}}
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_ = UsesHorse<HasDeprecatedConformance1>.self // expected-warning {{conformance of 'HasDeprecatedConformance1' to 'Horse' is deprecated}}{{documentation-file=deprecated-declaration}}
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}
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@available(*, deprecated)
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func passDeprecatedConformance1a(x: HasDeprecatedConformance1) {
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasDeprecatedConformance1>.self
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}
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// Deprecated with message
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public struct HasDeprecatedConformance2 {}
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@available(*, deprecated, message: "This conformance is deprecated")
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extension HasDeprecatedConformance2 : Horse {}
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func passDeprecatedConformance2(x: HasDeprecatedConformance2) {
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takesHorse(x) // expected-warning {{conformance of 'HasDeprecatedConformance2' to 'Horse' is deprecated: This conformance is deprecated}}{{documentation-file=deprecated-declaration}}
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takesHorseExistential(x) // expected-warning {{conformance of 'HasDeprecatedConformance2' to 'Horse' is deprecated: This conformance is deprecated}}{{documentation-file=deprecated-declaration}}
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x.giddyUp() // expected-warning {{conformance of 'HasDeprecatedConformance2' to 'Horse' is deprecated: This conformance is deprecated}}{{documentation-file=deprecated-declaration}}
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_ = x.isGalloping // expected-warning {{conformance of 'HasDeprecatedConformance2' to 'Horse' is deprecated: This conformance is deprecated}}{{documentation-file=deprecated-declaration}}
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_ = x[keyPath: \.isGalloping] // expected-warning {{conformance of 'HasDeprecatedConformance2' to 'Horse' is deprecated: This conformance is deprecated}}{{documentation-file=deprecated-declaration}}
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_ = UsesHorse<HasDeprecatedConformance2>.self // expected-warning {{conformance of 'HasDeprecatedConformance2' to 'Horse' is deprecated: This conformance is deprecated}}{{documentation-file=deprecated-declaration}}
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}
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@available(*, deprecated)
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func passDeprecatedConformance2a(x: HasDeprecatedConformance2) {
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasDeprecatedConformance2>.self
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}
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// Deprecated with version
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public struct HasDeprecatedConformance3 {}
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@available(macOS, introduced: 10.7, deprecated: 10.8)
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extension HasDeprecatedConformance3 : Horse {}
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func passDeprecatedConformance3(x: HasDeprecatedConformance3) {
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takesHorse(x) // expected-warning {{conformance of 'HasDeprecatedConformance3' to 'Horse' was deprecated in macOS 10.8}}{{documentation-file=deprecated-declaration}}
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takesHorseExistential(x) // expected-warning {{conformance of 'HasDeprecatedConformance3' to 'Horse' was deprecated in macOS 10.8}}{{documentation-file=deprecated-declaration}}
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x.giddyUp() // expected-warning {{conformance of 'HasDeprecatedConformance3' to 'Horse' was deprecated in macOS 10.8}}{{documentation-file=deprecated-declaration}}
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_ = x.isGalloping // expected-warning {{conformance of 'HasDeprecatedConformance3' to 'Horse' was deprecated in macOS 10.8}}{{documentation-file=deprecated-declaration}}
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_ = x[keyPath: \.isGalloping] // expected-warning {{conformance of 'HasDeprecatedConformance3' to 'Horse' was deprecated in macOS 10.8}}{{documentation-file=deprecated-declaration}}
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_ = UsesHorse<HasDeprecatedConformance3>.self // expected-warning {{conformance of 'HasDeprecatedConformance3' to 'Horse' was deprecated in macOS 10.8}}{{documentation-file=deprecated-declaration}}
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}
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func passDeprecatedConformance3a(x: HasDeprecatedConformance3) {
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if #available(macOS 10.8, *) {
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} else {
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// This branch is dead with our minimum deployment target, so don't emit
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// deprecation diagnostics in it.
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasDeprecatedConformance3>.self
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}
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}
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// Availability with version
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public struct HasAvailableConformance1 {}
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@available(macOS 100, *)
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extension HasAvailableConformance1 : Horse {}
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// These availability violations are errors because this test passes the
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// -swift-version 6.
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// See the other test case in test/Sema/conformance_availability_warn.swift for
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// the same example for -swift-version 5.
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func passAvailableConformance1(x: HasAvailableConformance1) { // expected-note 6{{add '@available' attribute to enclosing global function}}
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takesHorse(x) // expected-error {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-1 {{add 'if #available' version check}}
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takesHorseExistential(x) // expected-error {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-1 {{add 'if #available' version check}}
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x.giddyUp() // expected-error {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-1 {{add 'if #available' version check}}
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_ = x.isGalloping // expected-error {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-1 {{add 'if #available' version check}}
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_ = x[keyPath: \.isGalloping] // expected-error {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-1 {{add 'if #available' version check}}
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_ = UsesHorse<HasAvailableConformance1>.self // expected-error {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-1 {{add 'if #available' version check}}
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}
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@available(macOS 100, *)
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func passAvailableConformance1a(x: HasAvailableConformance1) {
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takesHorse(x)
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takesHorseExistential(x)
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x.giddyUp()
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_ = x.isGalloping
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_ = x[keyPath: \.isGalloping]
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_ = UsesHorse<HasAvailableConformance1>.self
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}
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// Always available conformance
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struct HasAvailableConformance2: Horse {}
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// Conformance available in macOS 200
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struct HasAvailableConformance3 {}
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@available(macOS 200, *)
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extension HasAvailableConformance3: Horse {}
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// Associated conformance with unavailability
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protocol Rider {
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associatedtype H : Horse
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}
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struct AssocConformanceUnavailable : Rider {
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// expected-error@-1 {{conformance of 'HasUnavailableConformance1' to 'Horse' is unavailable}}
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// expected-note@-2 {{in associated type 'Self.H' (inferred as 'HasUnavailableConformance1')}}
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typealias H = HasUnavailableConformance1
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}
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// Associated conformance with deprecation
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struct AssocConformanceDeprecated : Rider {
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// expected-warning@-1 {{conformance of 'HasDeprecatedConformance1' to 'Horse' is deprecated}}{{documentation-file=deprecated-declaration}}
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// expected-note@-2 {{in associated type 'Self.H' (inferred as 'HasDeprecatedConformance1')}}
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typealias H = HasDeprecatedConformance1
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}
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// Associated conformance with availability
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struct AssocConformanceAvailable1 : Rider {
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// expected-error@-1 {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-2 {{in associated type 'Self.H' (inferred as 'HasAvailableConformance1')}}
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// expected-note@-3 {{add '@available' attribute to enclosing struct}}
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typealias H = HasAvailableConformance1
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}
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@available(macOS 100, *)
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struct AssocConformanceAvailable2 : Rider {
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typealias H = HasAvailableConformance1
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}
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struct AssocConformanceAvailable3 {}
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extension AssocConformanceAvailable3 : Rider {
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// expected-error@-1 {{conformance of 'HasAvailableConformance1' to 'Horse' is only available in macOS 100 or newer}}
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// expected-note@-2 {{in associated type 'Self.H' (inferred as 'HasAvailableConformance1')}}
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// expected-note@-3 {{add '@available' attribute to enclosing extension}}
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typealias H = HasAvailableConformance1
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}
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struct AssocConformanceAvailable4 {}
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@available(macOS 100, *)
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extension AssocConformanceAvailable4 : Rider {
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typealias H = HasAvailableConformance1
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}
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@available(macOS 100, *)
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protocol Saddle {
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associatedtype H : Horse = HasAvailableConformance1
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}
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struct ConformsToSaddle1 : Saddle {}
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struct ConformsToSaddle2 : Saddle {
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typealias H = HasAvailableConformance2
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}
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struct ConformsToSaddle3 : Saddle {
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// expected-error@-1 {{conformance of 'HasAvailableConformance3' to 'Horse' is only available in macOS 200 or newer}}
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// expected-note@-2 {{add '@available' attribute to enclosing struct}}
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// expected-note@-3 {{in associated type 'Self.H' (inferred as 'HasAvailableConformance3'}}
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typealias H = HasAvailableConformance3
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}
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struct ConformsToSaddle4 : Saddle {
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// expected-error@-1 {{conformance of 'HasAvailableConformance3' to 'Horse' is only available in macOS 200 or newer}}
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// expected-note@-2 {{add '@available' attribute to enclosing struct}}
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// expected-note@-3 {{in associated type 'Self.H' (inferred as 'HasAvailableConformance3'}}
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@available(macOS 200, *)
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typealias H = HasAvailableConformance3
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}
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protocol Barn {
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@available(macOS 100, *)
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associatedtype H : Horse = HasAvailableConformance1
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}
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struct ConformsToBarn1 : Barn {}
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struct ConformsToBarn2 : Barn {
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typealias H = HasAvailableConformance2
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}
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struct ConformsToBarn3 : Barn {
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// expected-error@-1 {{conformance of 'HasAvailableConformance3' to 'Horse' is only available in macOS 200 or newer}}
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// expected-note@-2 {{add '@available' attribute to enclosing struct}}
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// expected-note@-3 {{in associated type 'Self.H' (inferred as 'HasAvailableConformance3'}}
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typealias H = HasAvailableConformance3
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}
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struct ConformsToBarn4 : Barn {
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// expected-error@-1 {{conformance of 'HasAvailableConformance3' to 'Horse' is only available in macOS 200 or newer}}
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// expected-note@-2 {{add '@available' attribute to enclosing struct}}
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// expected-note@-3 {{in associated type 'Self.H' (inferred as 'HasAvailableConformance3'}}
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|
@available(macOS 200, *)
|
|
typealias H = HasAvailableConformance3
|
|
}
|
|
|
|
// Solution ranking should down-rank solutions involving unavailable conformances
|
|
protocol First {}
|
|
extension First {
|
|
func doStuff<T>(_: T) -> Bool {}
|
|
}
|
|
|
|
protocol Second {}
|
|
extension Second {
|
|
func doStuff(_: Int) -> Int {}
|
|
}
|
|
|
|
struct ConformingType1 {}
|
|
|
|
extension ConformingType1 : First {}
|
|
|
|
@available(macOS 100, *)
|
|
extension ConformingType1 : Second {}
|
|
|
|
func usesConformingType1(_ c: ConformingType1) {
|
|
// We should pick First.doStuff() here, since Second.doStuff() is unavailable
|
|
let result = c.doStuff(123)
|
|
let _: Bool = result
|
|
}
|
|
|
|
@available(macOS 100, *)
|
|
func usesConformingType1a(_ c: ConformingType1) {
|
|
// We should pick Second.doStuff() here, since it is more specialized than
|
|
// First.doStuff()
|
|
let result = c.doStuff(123)
|
|
let _: Int = result
|
|
}
|
|
|
|
// Same as above but unconditionally unavailable
|
|
struct ConformingType2 {}
|
|
|
|
extension ConformingType2 : First {}
|
|
|
|
@available(*, unavailable)
|
|
extension ConformingType2 : Second {}
|
|
|
|
func usesConformingType2(_ c: ConformingType2) {
|
|
// We should pick First.doStuff() here, since Second.doStuff() is unavailable
|
|
let result = c.doStuff(123)
|
|
let _: Bool = result
|
|
}
|
|
|
|
// Make sure this also works for synthesized conformances
|
|
struct UnavailableHashable {
|
|
let x: Int
|
|
let y: Int
|
|
}
|
|
|
|
@available(macOS 100, *)
|
|
extension UnavailableHashable : Hashable {}
|
|
|
|
func usesUnavailableHashable(_ c: UnavailableHashable) {
|
|
// expected-note@-1 2 {{add '@available' attribute to enclosing global function}}
|
|
_ = Set([c])
|
|
// expected-error@-1 2 {{conformance of 'UnavailableHashable' to 'Hashable' is only available in macOS 100 or newer}}
|
|
// expected-note@-2 2 {{add 'if #available' version check}}
|
|
}
|
|
|
|
// Actually make sure we check witness availability correctly.
|
|
protocol Vehicle {
|
|
func move() // expected-note {{protocol requirement here}}
|
|
}
|
|
|
|
@available(macOS 100, *)
|
|
struct Pony : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
struct Bike {}
|
|
|
|
@available(macOS 100, *)
|
|
extension Bike : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
@available(macOS, introduced: 100)
|
|
struct Wagon {}
|
|
|
|
@available(macOS, introduced: 100)
|
|
extension Wagon : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
class Car {}
|
|
class ClownCar : Car {}
|
|
|
|
@available(macOS 200, *)
|
|
extension Car {
|
|
func move() {} // expected-note {{'move()' declared here}}
|
|
}
|
|
|
|
@available(macOS 100, *)
|
|
extension ClownCar : Vehicle {}
|
|
// expected-error@-1 {{protocol 'Vehicle' requires 'move()' to be available in macOS 100 and newer}}
|
|
|
|
@available(macOS, unavailable)
|
|
struct Truck : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
struct Scooter {}
|
|
|
|
@available(macOS, unavailable)
|
|
extension Scooter : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
struct Motorcycle {}
|
|
|
|
@available(macOS, unavailable)
|
|
extension Motorcycle : Vehicle {
|
|
@available(macOS, introduced: 100)
|
|
func move() {}
|
|
}
|
|
|
|
@available(macOS, unavailable)
|
|
struct AircraftCarrier {
|
|
struct Jet : Vehicle {
|
|
@available(macOS, introduced: 100)
|
|
func move() {}
|
|
}
|
|
}
|
|
|
|
struct Unicycle {
|
|
@available(macOS, introduced: 100)
|
|
func move() {}
|
|
}
|
|
|
|
@available(macOS, unavailable)
|
|
extension Unicycle : Vehicle {}
|
|
|
|
@available(macOS, unavailable, introduced: 100)
|
|
struct Train : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
struct Blimp {}
|
|
|
|
@available(macOS, unavailable, introduced: 100)
|
|
extension Blimp : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
@available(macOS, unavailable, introduced: 100)
|
|
struct Spaceship {
|
|
}
|
|
|
|
@available(macOS, unavailable, introduced: 100)
|
|
extension Spaceship : Vehicle {
|
|
func move() {}
|
|
}
|
|
|
|
// rdar://problem/75430966 - Allow using unavailable conformances from unavailable contexts.
|
|
@available(*, unavailable)
|
|
public enum UnavailableEnum {
|
|
case horse
|
|
}
|
|
|
|
@available(*, unavailable)
|
|
extension UnavailableEnum : Swift.Equatable {}
|
|
|
|
@available(*, unavailable)
|
|
extension UnavailableEnum : Swift.Hashable {}
|