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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 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
//
//===----------------------------------------------------------------------===//
package import Foundation
package import struct TSCBasic.ByteString
extension ByteString {
/// Access the contents of `self` as `Data`. The contents are not copied, so it is not safe to
/// store a reference to the data object.
package func withUnsafeData<R>(_ body: (Data) throws -> R) rethrows -> R {
let contents = self.contents
return try contents.withUnsafeBytes { buffer in
guard let pointer = UnsafeMutableRawBufferPointer(mutating: buffer).baseAddress else {
return try body(Data())
}
return try body(Data(bytesNoCopy: pointer, count: contents.count, deallocator: .none))
}
}
}
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