private static ITreeNode FindMarkedNode(
[NotNull] ISolution solution, [NotNull] ITextControl textControl,
TextRange markerRange, TextRange nameRange, [NotNull] Type nodeType)
{
var node = TextControlToPsi.GetSourceTokenAtOffset(
solution, textControl, markerRange.StartOffset);
while (node != null)
{
if (nodeType.IsInstanceOfType(node))
{
var range = node.GetDocumentRange().TextRange;
if (range == markerRange
|| range == markerRange.SetEndTo(nameRange.EndOffset)
|| range == markerRange.SetEndTo(nameRange.StartOffset))
{
return node;
}
// "x as T. \r\nvar t = ..." case
if (node is IIsExpression || node is IAsExpression)
{
var typeUsage = node.LastChild as IUserTypeUsage;
if (typeUsage != null)
{
var delimiter = typeUsage.ScalarTypeName.Delimiter;
if (delimiter != null)
{
var endOffset = delimiter.GetDocumentRange().TextRange.EndOffset;
if (range.SetEndTo(endOffset) == markerRange) return node;
}
}
}
var referenceName = node as IReferenceName;
if (referenceName != null)
{
var delimiter = referenceName.Delimiter;
if (delimiter != null)
{
var endOffset = delimiter.GetDocumentRange().TextRange.EndOffset;
if (range.SetEndTo(endOffset) == markerRange) return node;
}
}
}
node = node.Parent;
}
return null;
}
