System.IO.Compression.InputBuffer.SkipBits C# (CSharp) Method

        public void SkipBits(int n) {
            this.bitBuffer = this.bitBuffer >> n;
            this.bitsInBuffer -= n;
        }

        public int GetNextSymbol(InputBuffer input)
        {
            uint num = input.TryLoad16Bits();

            if (input.AvailableBits == 0)
            {
                return(-1);
            }
            int index = this.table[(num & this.tableMask)];

            if (index < 0)
            {
                uint num3 = ((uint)1) << this.tableBits;
                do
                {
                    index = -index;
                    if ((num & num3) == 0)
                    {
                        index = this.left[index];
                    }
                    else
                    {
                        index = this.right[index];
                    }
                    num3 = num3 << 1;
                }while (index < 0);
            }
            if (this.codeLengthArray[index] > input.AvailableBits)
            {
                return(-1);
            }
            input.SkipBits(this.codeLengthArray[index]);
            return(index);
        }