31 lines
1.2 KiB
C#
31 lines
1.2 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
|
|
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
|
|
|
|
using System;
|
|
|
|
namespace Microsoft.AspNetCore.DataProtection
|
|
{
|
|
internal static class ArraySegmentExtensions
|
|
{
|
|
public static byte[] AsStandaloneArray(this ArraySegment<byte> arraySegment)
|
|
{
|
|
// Fast-track: Don't need to duplicate the array.
|
|
if (arraySegment.Offset == 0 && arraySegment.Count == arraySegment.Array.Length)
|
|
{
|
|
return arraySegment.Array;
|
|
}
|
|
|
|
var retVal = new byte[arraySegment.Count];
|
|
Buffer.BlockCopy(arraySegment.Array, arraySegment.Offset, retVal, 0, retVal.Length);
|
|
return retVal;
|
|
}
|
|
|
|
public static void Validate<T>(this ArraySegment<T> arraySegment)
|
|
{
|
|
// Since ArraySegment<T> is a struct, it can be improperly initialized or torn.
|
|
// We call the ctor again to make sure the instance data is valid.
|
|
var unused = new ArraySegment<T>(arraySegment.Array, arraySegment.Offset, arraySegment.Count);
|
|
}
|
|
}
|
|
}
|