CreateTable()

void System.IO.Compression.HuffmanTree.CreateTable ( )

inlineprivate

Definition at line 114 of file HuffmanTree.cs.

    {
        uint[] array = CalculateHuffmanCode();
        short num = (short)_codeLengthArray.Length;
        for (int i = 0; i < _codeLengthArray.Length; i++)
        {
            int num2 = _codeLengthArray[i];
            if (num2 <= 0)
            {
                continue;
            }
            int num3 = (int)array[i];
            if (num2 <= _tableBits)
            {
                int num4 = 1 << num2;
                if (num3 >= num4)
                {
                    throw new InvalidDataException(System.SR.InvalidHuffmanData);
                }
                int num5 = 1 << _tableBits - num2;
                for (int j = 0; j < num5; j++)
                {
                    _table[num3] = (short)i;
                    num3 += num4;
                }
                continue;
            }
            int num6 = num2 - _tableBits;
            int num7 = 1 << _tableBits;
            int num8 = num3 & ((1 << _tableBits) - 1);
            short[] array2 = _table;
            do
            {
                short num9 = array2[num8];
                if (num9 == 0)
                {
                    array2[num8] = (short)(-num);
                    num9 = (short)(-num);
                    num++;
                }
                if (num9 > 0)
                {
                    throw new InvalidDataException(System.SR.InvalidHuffmanData);
                }
                array2 = (((num3 & num7) != 0) ? _right : _left);
                num8 = -num9;
                num7 <<= 1;
                num6--;
            }
            while (num6 != 0);
            array2[num8] = (short)i;
        }
    }

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.array, System.IO.Compression.HuffmanTree.CalculateHuffmanCode(), and System.SR.InvalidHuffmanData.

Referenced by System.IO.Compression.HuffmanTree.HuffmanTree().