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29ad714bb7
This commit mostly improves the performance of arrays and ranges. It does not cover Strings, Dictionaries and Sets yet.
41 lines
1.4 KiB
Swift
41 lines
1.4 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) 2014 - 2017 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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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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///
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/// Additions to 'SwiftShims' that can be written in Swift.
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///
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//===----------------------------------------------------------------------===//
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#if _runtime(_ObjC)
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import SwiftShims
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@_inlineable
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@_versioned
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internal func _makeSwiftNSFastEnumerationState()
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-> _SwiftNSFastEnumerationState {
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return _SwiftNSFastEnumerationState(
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state: 0, itemsPtr: nil, mutationsPtr: nil,
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extra: (0, 0, 0, 0, 0))
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}
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/// A dummy value to be used as the target for `mutationsPtr` in fast
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/// enumeration implementations.
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var _fastEnumerationStorageMutationsTarget: CUnsignedLong = 0
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/// A dummy pointer to be used as `mutationsPtr` in fast enumeration
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/// implementations.
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public // SPI(Foundation)
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var _fastEnumerationStorageMutationsPtr: UnsafeMutablePointer<CUnsignedLong> {
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return UnsafeMutablePointer(
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Builtin.addressof(&_fastEnumerationStorageMutationsTarget))
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}
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#endif
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