81 lines
2.5 KiB
C#
81 lines
2.5 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using System.IO;
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using System.Runtime.CompilerServices;
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namespace CommunityToolkit.HighPerformance.Streams;
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/// <inheritdoc/>
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partial class MemoryStream
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{
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/// <summary>
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/// Validates the <see cref="Stream.Position"/> argument (it needs to be in the [0, length]) range.
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/// </summary>
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/// <param name="position">The new <see cref="Stream.Position"/> value being set.</param>
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/// <param name="length">The maximum length of the target <see cref="Stream"/>.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void ValidatePosition(long position, int length)
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{
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if ((ulong)position > (ulong)length)
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{
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ThrowArgumentOutOfRangeExceptionForPosition();
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}
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}
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/// <summary>
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/// Validates the <see cref="Stream.Read(byte[],int,int)"/> or <see cref="Stream.Write(byte[],int,int)"/> arguments.
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/// </summary>
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/// <param name="buffer">The target array.</param>
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/// <param name="offset">The offset within <paramref name="buffer"/>.</param>
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/// <param name="count">The number of elements to process within <paramref name="buffer"/>.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void ValidateBuffer(byte[]? buffer, int offset, int count)
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{
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if (buffer is null)
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{
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ThrowArgumentNullExceptionForBuffer();
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}
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if (offset < 0)
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{
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ThrowArgumentOutOfRangeExceptionForOffset();
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}
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if (count < 0)
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{
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ThrowArgumentOutOfRangeExceptionForCount();
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}
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if (offset + count > buffer!.Length)
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{
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ThrowArgumentExceptionForLength();
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}
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}
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/// <summary>
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/// Validates the <see cref="MemoryStream{TSource}.CanWrite"/> property.
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void ValidateCanWrite(bool canWrite)
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{
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if (!canWrite)
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{
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ThrowNotSupportedException();
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}
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}
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/// <summary>
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/// Validates that a given <see cref="Stream"/> instance hasn't been disposed.
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void ValidateDisposed(bool disposed)
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{
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if (disposed)
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{
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ThrowObjectDisposedException();
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}
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}
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}
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