public SequenceSize WriteNext(Span <byte> writeTo)
{
if (_position == _rows.Count)
{
return(_internalColumnWriter.WriteNext(writeTo));
}
var len = Math.Min(_rows.Count - _position, writeTo.Length);
for (int i = 0; i < len; i++)
{
writeTo[i] = _rows[_position + i] == null ? (byte)1 : (byte)0;
}
_position += len;
if (_position < _rows.Count)
{
return(new SequenceSize(len, 0));
}
var size = _internalColumnWriter.WriteNext(writeTo.Slice(len));
return(new SequenceSize(size.Bytes + len, size.Elements));
}
public SequenceSize WriteNext(Span <byte> writeTo)
{
int bytesCount = 0;
var span = writeTo;
for (; _headerPosition < _rows.ListLengths.Count; _headerPosition++)
{
if (!BitConverter.TryWriteBytes(span, (ulong)_rows.ListLengths[_headerPosition]))
{
return(new SequenceSize(bytesCount, 0));
}
span = span.Slice(sizeof(ulong));
bytesCount += sizeof(ulong);
}
var elementSize = _elementColumnWriter.WriteNext(span);
_elementPosition += elementSize.Elements;
var elementsCount = 0;
while (_position < _rows.ListLengths.Count)
{
if (_rows.ListLengths[_position] > _elementPosition)
{
break;
}
++elementsCount;
++_position;
}
return(new SequenceSize(elementSize.Bytes + bytesCount, elementsCount));
}