/// <summary>
/// Reads a <see cref="IBufferReader{T}"/> to completion, writing to a <see cref="IBufferWriterAsync{T}"/>
/// </summary>
/// <typeparam name="T">The type of element</typeparam>
/// <param name="reader">The reader to read from</param>
/// <param name="writer">The writer to write to</param>
/// <param name="token">A cancellation token to abort the operation</param>
/// <returns>A task representing the progress fo the write operation</returns>
public static async ValueTask CopyToAsync <T>(this IBufferReader <T> reader, IBufferWriterAsync <T> writer, CancellationToken token = default)
{
while (reader.CanRead)
{
var InBuffer = reader.GetMemory(0);
if (InBuffer.IsEmpty)
{
break;
}
InBuffer.Span.CopyTo(writer.GetSpan(InBuffer.Length));
await writer.AdvanceAsync(InBuffer.Length, token);
reader.Advance(InBuffer.Length);
}
}
