using System;
using ZeroLevel.Collections;

namespace ZeroLevel.Extensions
{
    internal static class BitArrayExtensions
    {
        // <summary>
        // serialize a bitarray.
        // </summary>
        //<param name="bits">The bit array to convert</param>
        // <returns>The bit array converted to an array of bytes.</returns>
        internal static byte[] ToBytes(this FastBitArray bits)
        {
            if (bits == null) return null;
            var numBytes = bits.Count / 8;
            if (bits.Count % 8 != 0) numBytes++;
            var bytes = new byte[numBytes];
            bits.CopyTo(bytes, 0);
            return bytes;
        }
    }
}