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9d9a6c6231
We are currently in process of removing `InOutType`
so `VarDecl::get{Interface}Type` is going to wrap base
type into `InOutType` if its flag indicates that it's
an `inout` parameter declaration. But such type can't
be restored directly using `VarDecl::set{Interface}Type`
caller needs additional logic to extract base type.
Resolves: rdar://problem/33613329
46 lines
978 B
Swift
46 lines
978 B
Swift
// RUN: %target-typecheck-verify-swift %s
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precedencegroup BindingPrecedence {
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higherThan: DefaultPrecedence
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}
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infix operator ~>
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infix operator ≈> : BindingPrecedence
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struct M<L : P, R> {
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let f: L
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let b: (inout L.B) -> R
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init(f: L, b: @escaping (inout L.B) -> R) {
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self.f = f
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self.b = b
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}
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}
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protocol P {
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associatedtype A
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associatedtype B
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func `in`<R>(_ a: inout A, apply body: (inout B) -> R) -> R
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static func ~> (_: A, _: Self) -> B
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}
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extension P {
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static func ≈> <R>(f: Self, b: @escaping (inout B) -> R) -> M<Self, R> {}
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}
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extension WritableKeyPath : P {
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typealias A = Root
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typealias B = Value
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func `in`<R>(_ a: inout A, apply body: (inout B) -> R) -> R {}
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static func ~> (a: A, path: WritableKeyPath) -> B {}
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}
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struct X { var y: Int = 0 }
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var x = X()
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x ~> \X.y ≈> { a in a += 1; return 3 }
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// expected-error@-1 {{cannot convert call result type 'M<WritableKeyPath<X, Int>, _>' to expected type 'WritableKeyPath<_, _>'}}
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