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d843b10bcc
Mostly fixes <rdar://problem/35945827>, but there is a case that should work that does not type check. At least we don't crash though.
91 lines
3.0 KiB
Swift
91 lines
3.0 KiB
Swift
// RUN: %target-typecheck-verify-swift
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struct Foo {
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static var someVar: Foo = Foo()
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static var someOptVar: Foo? = Foo()
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static func someFunc() -> Foo {}
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static func someOptFunc() -> Foo? {}
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}
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func nonOptContext() -> Foo {
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switch () {
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case ():
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return .someVar
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someOptVar // expected-error 2 {{value of optional type 'Foo' not unwrapped; did you mean to use '!' or '?'?}} {{23-23=!}}
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// TODO
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//case ():
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// return .someOptVar!
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someFunc()
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someOptFunc() // expected-error{{}} {{26-26=!}}
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// TODO
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//case ():
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// return .someOptFunc()!
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}
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}
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func optContext() -> Foo? {
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switch () {
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case ():
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return .someVar
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someOptVar
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someFunc()
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someOptFunc()
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .some(.someVar)
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .none
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}
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}
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func iuoContext() -> Foo! {
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switch () {
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case ():
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return .someVar
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someOptVar
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someFunc()
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .someOptFunc()
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .some(.someVar)
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case (): // expected-warning {{case is already handled by previous patterns; consider removing it}}
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return .none
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}
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}
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// Favor the outermost type if the member appears at multiple levels of
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// unwrapping.
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func nestedOptContext() -> Foo?? {
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return .none
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}
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// <rdar://problem/35945827>
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// This should diagnose instead of crashing in SILGen
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protocol Horse {
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static var palomino: Horse { get }
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}
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func rideAHorse(_ horse: Horse?) {}
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rideAHorse(.palomino)
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// expected-error@-1 {{static member 'palomino' cannot be used on protocol metatype 'Horse.Protocol'}}
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// FIXME: This should work if the static member is part of a class though
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class Donkey {
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static var mule: Donkey & Horse { while true {} }
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}
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func rideAMule(_ mule: (Horse & Donkey)?) {}
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rideAMule(.mule)
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// expected-error@-1 {{static member 'mule' cannot be used on protocol metatype '(Donkey & Horse).Protocol'}}
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