using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace skyscraper5.DNS.Protocol.Utils
{
	internal static class ByteExtensions
	{
		public static byte GetBitValueAt(this byte b, byte offset, byte length)
		{
			return (byte)((b >> offset) & ~(0xff << length));
		}

		public static byte SetBitValueAt(this byte b, byte offset, byte length, byte value)
		{
			int mask = ~(0xff << length);
			value = (byte)(value & mask);

			return (byte)((value << offset) | (b & ~(mask << offset)));
		}
	}
}