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# Motivation For AsyncStream we created a custom internal Deque implementation to use for the buffering. This implementation was relatively bare-bones compared to the one in swift-collections. Furthermore, it lacked some methods that we need to implement the new `AsyncStream` APIs that support producer backpressure. # Modification This PR copies over the Deque implementation of swift-collections and makes it internal and non-inlinable. # Result We now have a fully functional Deque.
31 lines
1.2 KiB
Swift
31 lines
1.2 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2021 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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//
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//===----------------------------------------------------------------------===//
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/// This file is copied from swift-collections and should not be modified here.
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/// Rather all changes should be made to swift-collections and copied back.
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import Swift
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extension _Deque: ExpressibleByArrayLiteral {
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/// Creates a new deque from the contents of an array literal.
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///
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/// Do not call this initializer directly. It is used by the compiler when
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/// you use an array literal. Instead, create a new deque using an array
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/// literal as its value by enclosing a comma-separated list of values in
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/// square brackets. You can use an array literal anywhere a deque is expected
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/// by the type context.
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///
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/// - Parameter elements: A variadic list of elements of the new deque.
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init(arrayLiteral elements: Element...) {
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self.init(elements)
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}
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}
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