GetNextSymbol()

int System.IO.Compression.HuffmanTree.GetNextSymbol ( InputBuffer input )

inline

Definition at line 168 of file HuffmanTree.cs.

    {
        uint num = input.TryLoad16Bits();
        if (input.AvailableBits == 0)
        {
            return -1;
        }
        int num2 = _table[num & _tableMask];
        if (num2 < 0)
        {
            uint num3 = (uint)(1 << _tableBits);
            do
            {
                num2 = -num2;
                num2 = (((num & num3) != 0) ? _right[num2] : _left[num2]);
                num3 <<= 1;
            }
            while (num2 < 0);
        }
        int num4 = _codeLengthArray[num2];
        if (num4 <= 0)
        {
            throw new InvalidDataException(System.SR.InvalidHuffmanData);
        }
        if (num4 > input.AvailableBits)
        {
            return -1;
        }
        input.SkipBits(num4);
        return num2;
    }

References System.IO.Compression.HuffmanTree._codeLengthArray, System.IO.Compression.HuffmanTree._left, System.IO.Compression.HuffmanTree._right, System.IO.Compression.HuffmanTree._table, System.IO.Compression.HuffmanTree._tableBits, System.IO.Compression.HuffmanTree._tableMask, System.input, and System.SR.InvalidHuffmanData.

Referenced by System.IO.Compression.InflaterManaged.DecodeBlock(), and System.IO.Compression.InflaterManaged.DecodeDynamicBlockHeader().