| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// Additions to 'SwiftShims' that can be written in Swift. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #if _runtime(_ObjC) |
| import SwiftShims |
| |
| internal func _makeSwiftNSFastEnumerationState() |
| -> _SwiftNSFastEnumerationState { |
| return _SwiftNSFastEnumerationState( |
| state: 0, itemsPtr: nil, mutationsPtr: nil, |
| extra: (0, 0, 0, 0, 0)) |
| } |
| |
| /// A dummy value to be used as the target for `mutationsPtr` in fast |
| /// enumeration implementations. |
| var _fastEnumerationStorageMutationsTarget: CUnsignedLong = 0 |
| |
| /// A dummy pointer to be used as `mutationsPtr` in fast enumeration |
| /// implementations. |
| public // SPI(Foundation) |
| var _fastEnumerationStorageMutationsPtr: UnsafeMutablePointer<CUnsignedLong> { |
| return UnsafeMutablePointer( |
| Builtin.addressof(&_fastEnumerationStorageMutationsTarget)) |
| } |
| #endif |
