public T GetCurrentRecordDynamic()
{
var obj = TCreatorFunc();
_mapping.Map(obj, _data.Span, _currentValueIndices);
return(obj);
}
// TODO Use GetPosition instead of nextpositionrelative
private void ProcessLine(ReadOnlySequence <byte> readOnlySequence)
{
if (_recordLength == 0)
{
_recordLength = CalculateRecordLength(readOnlySequence);
}
Span <int> valueIndices = stackalloc int[_recordLength * 2];
SequencePosition[] positions = ArrayPool <SequencePosition> .Shared.Rent(_recordLength + 1);
SequencePosition currentValuePosition = readOnlySequence.Start;
for (int i = 0; i < _recordLength; i++)
{
byte delim = i == _recordLength - 1 ? (byte)'\r' : (byte)',';
var nextValuePosition = readOnlySequence.Slice(readOnlySequence.GetPosition(1, currentValuePosition)).PositionOf(delim);
if (nextValuePosition == null)
{
if (i == _recordLength - 1)
{
// the rest of the string is the last value
//var recordValue = readOnlySequence.Slice(currentValuePosition);
nextValuePosition = currentValuePosition;
}
else
{
throw new InvalidOperationException("CSV was invalid, unexpected EOF");
}
}
positions[i] = currentValuePosition;
currentValuePosition = readOnlySequence.GetPosition(1, nextValuePosition.Value);
}
positions[_recordLength] = readOnlySequence.End;
var currentPos = 0;
for (int i = 0; i < _recordLength; i++)
{
// Because we already skipped over the delimiter, need to 'unskip' over it so length doesn't include it
var segmentLength = (int)readOnlySequence.Slice(positions[i], positions[i + 1]).Length - 1;
valueIndices[i * 2] = currentPos;
valueIndices[i * 2 + 1] = segmentLength;
currentPos += segmentLength + 1; // skip over the delim
}
// This is disgusting, find a better way to do this
// this happens because .End doesn't have a delim to skip over
// and we assume that we do in the for loop
valueIndices[(_recordLength - 1) * 2 + 1] += 1;
var entity = _mapper.Map(readOnlySequence, valueIndices);
_list.Add(entity);
}
