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// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
@available(*, unavailable)
extension NSEnumerator.Iterator : Sendable { }
//@_nonSendable - TODO: Mark with attribute to indicate this pure abstract class defers Sendable annotation to its subclasses.
open class NSEnumerator : NSObject {
open func nextObject() -> Any? {
NSRequiresConcreteImplementation()
}
}
extension NSEnumerator : Sequence {
public struct Iterator : IteratorProtocol {
let enumerator : NSEnumerator
public func next() -> Any? {
return enumerator.nextObject()
}
}
public func makeIterator() -> Iterator {
return Iterator(enumerator: self)
}
}
extension NSEnumerator {
public var allObjects: [Any] {
return Array(self)
}
}
internal class NSGeneratorEnumerator<Base : IteratorProtocol> : NSEnumerator where Base.Element : Any {
var generator : Base
init(_ generator: Base) {
self.generator = generator
}
override func nextObject() -> Any? {
return generator.next()
}
}
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