private bool CleanupWholeNode(List <ValueTuple <SyntaxAnnotation, SyntaxAnnotation> > annotations)
{
if (annotations.Count != 1)
{
return(false);
}
var startMarker = SpanMarker.FromAnnotation(annotations[0].Item1);
var endMarker = SpanMarker.FromAnnotation(annotations[0].Item2);
return(startMarker.Type == SpanMarkerType.BeginningOfFile && endMarker.Type == SpanMarkerType.EndOfFile);
}
private IEnumerable <TextSpan> GetTextSpansFromAnnotation(SyntaxNode node, List <ValueTuple <SyntaxAnnotation, SyntaxAnnotation> > annotations, CancellationToken cancellationToken)
{
// Now try to retrieve the text span from the annotations injected into the node.
foreach (var annotationPair in annotations)
{
cancellationToken.ThrowIfCancellationRequested();
var previousMarkerAnnotation = annotationPair.Item1;
var nextMarkerAnnotation = annotationPair.Item2;
var previousTokenMarker = SpanMarker.FromAnnotation(previousMarkerAnnotation);
var nextTokenMarker = SpanMarker.FromAnnotation(nextMarkerAnnotation);
var previousTokens = node.GetAnnotatedNodesAndTokens(previousMarkerAnnotation).Where(n => n.IsToken).Select(n => n.AsToken());
var nextTokens = node.GetAnnotatedNodesAndTokens(nextMarkerAnnotation).Where(n => n.IsToken).Select(n => n.AsToken());
// Check whether we can use the tokens we got back from the node.
TextSpan span;
if (TryGetTextSpanFromAnnotation(previousTokenMarker, nextTokenMarker, node, previousTokens, nextTokens, out span))
{
yield return(span);
}
}
}
