public IEnumerable <ITagSpan <IErrorTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
var span = spans[0];
var line = span.Start.GetContainingLine();
var classificationSpans = _classifier.GetClassificationSpans(line.Extent);
string property = null;
ClearError(line);
foreach (var cspan in classificationSpans)
{
if (cspan.ClassificationType.IsOfType(PredefinedClassificationTypeNames.SymbolDefinition))
{
property = cspan.Span.GetText();
}
else if (cspan.ClassificationType.IsOfType(PredefinedClassificationTypeNames.Literal))
{
if (string.IsNullOrEmpty(property))
{
continue;
}
CompletionItem item = CompletionItem.GetCompletionItem(property);
if (item == null)
{
continue;
}
string value = cspan.Span.GetText();
int intValue;
if (!item.Values.Contains(value) && !int.TryParse(value, out intValue))
{
yield return(CreateError(line, cspan, "\"" + value + "\" is not a valid value for the '" + property + "' property"));
}
}
}
}
