BACnet.Tagging.TagReader.ReadGeneric C# (CSharp) Method

        public GenericValue ReadGeneric(byte tag = 255)
        {
            CopyingStream cstream = new CopyingStream(_stream);
            BinaryReader creader = new BinaryReader(cstream);
            Stream ostream = _stream;
            BinaryReader oreader = _reader;
            long end = 0;
            int depth = 0;

            ReadOpenTag(tag);

            if (_hasHeader)
                throw new Exception("Can't read generic tag when header is already cached");

            try
            {
                _stream = cstream;
                _reader = creader;

                while (depth >= 0)
                {
                    end = cstream.Position;
                    _peekHeader();

                    // TODO: EOF handling

                    if (_lvt == LVT.Type)
                    {
                        if (depth == 0 && _type == TagType.Close && _tagNumber == tag)
                            break;
                        else if (_type == TagType.Open)
                            depth++;
                        else if (_type == TagType.Close)
                            depth--;
                    }
                    else if (_lvt == LVT.Length)
                    {
                        cstream.Skip(_length);
                    }

                    _hasHeader = false;
                }
            }
            finally
            {
                _stream = ostream;
                _reader = oreader;
            }

            ReadCloseTag(tag);

            return new TaggedGenericValue(cstream.MemoryStream.GetBuffer(), 0, (int)end);
        }