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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#if canImport(Dispatch)
import Dispatch
@available(*, unavailable)
extension DispatchData.Region : @unchecked Sendable { }
extension DispatchData : DataProtocol {
public typealias Regions = [Region]
public struct Region : DataProtocol, ContiguousBytes {
internal let bytes: UnsafeBufferPointer<UInt8>
internal let index: DispatchData.Index
internal let owner: DispatchData
internal init(bytes: UnsafeBufferPointer<UInt8>, index: DispatchData.Index, owner: DispatchData) {
self.bytes = bytes
self.index = index
self.owner = owner
}
public var regions: CollectionOfOne<Region> {
return CollectionOfOne(self)
}
public subscript(position: DispatchData.Index) -> UInt8 {
precondition(index <= position && position <= index + bytes.count)
return bytes[position - index]
}
public var startIndex: DispatchData.Index {
return index
}
public var endIndex: DispatchData.Index {
return index + bytes.count
}
public func withUnsafeBytes<ResultType>(_ body: (UnsafeRawBufferPointer) throws -> ResultType) rethrows -> ResultType {
return try body(UnsafeRawBufferPointer(bytes))
}
}
public var regions: [Region] {
var regions = [Region]()
enumerateBytes { (bytes, index, stop) in
regions.append(Region(bytes: bytes, index: index, owner: self))
}
return regions
}
}
#endif
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