public SequenceWindow Store(SequenceId value)
{
var latest = Latest;
var historyArray = this.historyArray;
int difference = Latest - value;
if (difference > 0)
{
historyArray = this.historyArray.Store(difference - 1);
}
else
{
int offset = -difference;
historyArray = (this.historyArray << offset).Store(offset - 1);
latest = value;
}
return(new SequenceWindow(latest, historyArray));
}
private SequenceWindow(SequenceId latest, BitArray64 history)
{
Debug.Assert(latest.IsValid);
Latest = latest;
historyArray = history;
}
public SequenceWindow(SequenceId latest)
{
Debug.Assert(latest.IsValid);
Latest = latest;
historyArray = new BitArray64();
}