// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT license.

namespace Microsoft.ClearScript.JavaScript

{

/// <summary>

/// Defines properties and methods common to all

/// <see href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer">ArrayBuffer</see>

/// views.

/// </summary>

public interface IArrayBufferView

{

/// <summary>

/// Gets view's underlying <c>ArrayBuffer</c>.

/// </summary>

IArrayBuffer ArrayBuffer { get; }

/// <summary>

/// Gets the view's offset within the underlying <c>ArrayBuffer</c>.

/// </summary>

ulong Offset { get; }

/// <summary>

/// Gets the view's size in bytes.

/// </summary>

ulong Size { get; }

/// <summary>

/// Creates a byte array containing a copy of the view's contents.

/// </summary>

/// <returns>A new byte array containing a copy of the view's contents.</returns>

byte[] GetBytes();

/// <summary>

/// Copies bytes from the view into the specified byte array.

/// </summary>

/// <param name="offset">The offset within the view of the first byte to copy.</param>

/// <param name="count">The maximum number of bytes to copy.</param>

/// <param name="destination">The byte array into which to copy the bytes.</param>

/// <param name="destinationIndex">The index within <paramref name="destination"/> at which to store the first copied byte.</param>

/// <returns>The number of bytes copied.</returns>

ulong ReadBytes(ulong offset, ulong count, byte[] destination, ulong destinationIndex);

/// <summary>

/// Copies bytes from the specified byte array into the view.

/// </summary>

/// <param name="source">The byte array from which to copy the bytes.</param>

/// <param name="sourceIndex">The index within <paramref name="source"/> of the first byte to copy.</param>

/// <param name="count">The maximum number of bytes to copy.</param>

/// <param name="offset">The offset within the view at which to store the first copied byte.</param>

/// <returns>The number of bytes copied.</returns>

ulong WriteBytes(byte[] source, ulong sourceIndex, ulong count, ulong offset);

}

}