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// RUN: %target-swift-emit-module-interface(%t.swiftinterface) %s -module-name conformances
// RUN: %target-swift-typecheck-module-from-interface(%t.swiftinterface) -module-name conformances
// RUN: %FileCheck %s < %t.swiftinterface
// REQUIRES: concurrency, OS=macosx
// CHECK: public struct SequenceAdapte
@available(SwiftStdlib 5.1, *)
public struct SequenceAdapter<Base: AsyncSequence>: AsyncSequence {
// CHECK-LABEL: public struct AsyncIterator
// CHECK: @available{{.*}}macOS 10.15
// CHECK-NEXT: public typealias Element = Base.Element
// CHECK: #if compiler(>=5.3) && $AssociatedTypeImplements
// CHECK: @available(
// CHECK: @_implements(_Concurrency.AsyncIteratorProtocol, Failure)
// CHECK-SAME: public typealias __AsyncIteratorProtocol_Failure = Base.Failure
// CHECK-NEXT: #else
// CHECK-NOT: @_implements
// CHECK: public typealias __AsyncIteratorProtocol_Failure = Base.Failure
// CHECK-NEXT: #endif
public typealias Element = Base.Element
public struct AsyncIterator: AsyncIteratorProtocol {
public mutating func next() async rethrows -> Base.Element? { nil }
}
// CHECK-LABEL: public func makeAsyncIterator
public func makeAsyncIterator() -> AsyncIterator { AsyncIterator() }
// CHECK: @available(
// CHECK: @_implements(_Concurrency.AsyncSequence, Failure)
// CHECK-SAME: public typealias __AsyncSequence_Failure = Base.Failure
}
// CHECK: public struct OtherSequenceAdapte
@available(SwiftStdlib 5.1, *)
public struct OtherSequenceAdapter<Base: AsyncSequence>: AsyncSequence {
// CHECK: public typealias Element = Base.Element
// CHECK-NOT: public typealias Failure
// CHECK: public struct Failure
// CHECK-LABEL: public struct AsyncIterator
// CHECK: @available{{.*}}macOS 10.15
// CHECK: @available(
// CHECK: @_implements(_Concurrency.AsyncIteratorProtocol, Failure)
// CHECK-SAME: public typealias __AsyncIteratorProtocol_Failure = Base.Failure
public typealias Element = Base.Element
public struct Failure: Error { }
// CHECK-NOT: public typealias Failure
public struct AsyncIterator: AsyncIteratorProtocol {
public mutating func next() async rethrows -> Base.Element? { nil }
}
// CHECK: public func makeAsyncIterator
public func makeAsyncIterator() -> AsyncIterator { AsyncIterator() }
// CHECK-NOT: public typealias Failure
}
// CHECK: public struct MineOwnIterator
@available(SwiftStdlib 5.1, *)
public struct MineOwnIterator<Element>: AsyncSequence, AsyncIteratorProtocol {
public mutating func next() async -> Element? { nil }
public func makeAsyncIterator() -> Self { self }
// CHECK: @_implements(_Concurrency.AsyncIteratorProtocol, Failure)
// CHECK-SAME: public typealias __AsyncIteratorProtocol_Failure = Swift.Never
// CHECK: @_implements(_Concurrency.AsyncSequence, Failure)
// CHECK-SAME: public typealias __AsyncSequence_Failure = Swift.Never
}
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