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Pods/BlueECC/Sources/CryptorECC/Data+Extensions.swift

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+//  Copyright © 2019 IBM. All rights reserved.
+//
+//     Licensed under the Apache License, Version 2.0 (the "License");
+//     you may not use this file except in compliance with the License.
+//     You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+//     Unless required by applicable law or agreed to in writing, software
+//     distributed under the License is distributed on an "AS IS" BASIS,
+//     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//     See the License for the specific language governing permissions and
+//     limitations under the License.
+//
+
+import Foundation
+
+#if !swift(>=5.0)
+// Extension to allow Swift 5 `withUnsafeBytes` API for earlier versions
+internal extension Data {
+    func withUnsafeBytes<T>(_ body: (UnsafeRawBufferPointer) throws -> T) rethrows -> T {
+        let c = count
+        return try withUnsafeBytes { (p: UnsafePointer<UInt8>) throws -> T in
+            try body(UnsafeRawBufferPointer(start: p, count: c))
+        }
+    }
+    
+    mutating func withUnsafeMutableBytes<T>(_ body: (UnsafeMutableRawBufferPointer) throws -> T) rethrows -> T {
+        let c = count
+        return try withUnsafeMutableBytes { (p: UnsafeMutablePointer<UInt8>) throws -> T in
+            try body(UnsafeMutableRawBufferPointer(start: p, count: c))
+        }
+    }
+    
+    init(_ bytes: [UInt8]) {
+        self.init(bytes: bytes)
+    } 
+}
+#endif