internal void UpdateMessages(IEnumerable <EslintMessage> messages)
{
var oldSnapshot = Factory.CurrentSnapshot;
var markers = ProcessMessages(messages).Select(CreateMarker);
var newSnapshot = new LinterSnapshot(FilePath, oldSnapshot.VersionNumber + 1, markers);
SnapToNewSnapshot(newSnapshot);
}
private void SnapToNewSnapshot(LinterSnapshot snapshot)
{
var factory = Factory;
factory.UpdateMarkers(snapshot);
_provider.UpdateAllSinks(factory);
UpdateMarkers(_currentSnapshot, snapshot);
Snapshot = snapshot;
}
private void UpdateMarkers(ITextSnapshot currentSnapshot, LinterSnapshot snapshot)
{
var oldSnapshot = Snapshot;
var handler = TagsChanged;
if (null == handler)
{
return;
}
var start = int.MaxValue;
var end = int.MinValue;
if (null != oldSnapshot && 0 < oldSnapshot.Count)
{
start = oldSnapshot.Markers
.Select(marker => marker.Span.Start.TranslateTo(currentSnapshot, PointTrackingMode.Negative))
.Min();
end = oldSnapshot.Markers
.Select(marker => marker.Span.End.TranslateTo(currentSnapshot, PointTrackingMode.Positive))
.Max();
}
if (0 < snapshot.Count)
{
start = Math.Min(start, snapshot.Markers.Select(marker => marker.Span.Start.Position)
.Min());
end = Math.Max(end, snapshot.Markers.Select(marker => marker.Span.End.Position)
.Max());
}
if (start > end)
{
return;
}
handler(this, new SnapshotSpanEventArgs(new SnapshotSpan(
currentSnapshot, Span.FromBounds(start, end))));
}
