Skeleton IBufferWriter<byte> Implementation

skeleton-ibufferwriter-impl.cs

public class ArrayBufferWriter : IBufferWriter<byte>, IDisposable
{
    private byte[] _rentedBuffer;
    private int _written;

    public ArrayBufferWriter(int initialCapacity)
    {
        // TODO: argument validation

        _rentedBuffer = ArrayPool<byte>.Shared.Rent(initialCapacity);
        _written = 0;
    }

    public void Advance(int count)
    {
        // TODO: check if disposed

        // TODO: argument validation

        _written += count;
    }

    public Memory<byte> GetMemory(int sizeHint = 0)
    {
        // TODO: check if disposed

        // TODO: argument validation

        // TODO: grow/resize the buffer as needed based on your resizing strategy

        return _rentedBuffer.AsMemory(_written);
    }

    public Span<byte> GetSpan(int sizeHint = 0)
    {
        // TODO: check if disposed

        // TODO: argument validation

        // TODO: grow/resize the buffer as needed based on your resizing strategy

        return _rentedBuffer.AsSpan(_written);
    }

    public void Dispose()
    {
        // return back to the pool
    }
}