List decode()

in lib/src/hpack/huffman.dart [37:83]
42 lines of code
10 McCabe index (conditional complexity)

  List<int> decode(List<int> bytes) {
    var buffer = BytesBuilder();

    var currentByteOffset = 0;
    var node = _root;
    var currentDepth = 0;
    while (currentByteOffset < bytes.length) {
      var byte = bytes[currentByteOffset];
      for (var currentBit = 7; currentBit >= 0; currentBit--) {
        var right = (byte >> currentBit) & 1 == 1;
        if (right) {
          node = node.right!;
        } else {
          node = node.left!;
        }
        currentDepth++;
        if (node.value != null) {
          if (node.value == EOS_BYTE) {
            throw HuffmanDecodingException(
                'More than 7 bit padding is not allowed. Found entire EOS '
                'encoding');
          }
          buffer.addByte(node.value!);
          node = _root;
          currentDepth = 0;
        }
      }
      currentByteOffset++;
    }

    if (node != _root) {
      if (currentDepth > 7) {
        throw HuffmanDecodingException(
            'Incomplete encoding of a byte or more than 7 bit padding.');
      }

      while (node.right != null) {
        node = node.right!;
      }

      if (node.value != 256) {
        throw HuffmanDecodingException('Incomplete encoding of a byte.');
      }
    }

    return buffer.takeBytes();
  }