public CacheState ManageCache(ref ProviderCache cache, NormalizedSnapshotSpanCollection spans, ITextBuffer buffer)
{
if (cache != null && cache.Snapshot == spans[0].Snapshot)
{
return(CacheState.Resolved);
}
var task = ProviderCache.ResolveAsync(buffer, spans[0].Snapshot);
try
{
// TODO: can we make this async?
task.Wait();
}
catch (Exception ex)
{
Log.LogError(ex.ToString());
return(CacheState.NotResolved);
}
// TODO: can we make this async?
cache = task.Result;
return(cache == null ? CacheState.NotResolved : CacheState.Resolved);
}
internal IEnumerable <ITagSpan <IClassificationTag> > GetClassificationTags(ProviderCache cache, NormalizedSnapshotSpanCollection spans, Dictionary <string, IClassificationType> classificationTypeDictionary)
{
var snapshot = spans[0].Snapshot;
IEnumerable <ClassifiedSpan> classifiedSpans = GetIdentifiersInSpans(cache.Workspace, cache.SemanticModel, spans);
foreach (var classifiedSpan in classifiedSpans)
{
var node = GetExpression(cache.SyntaxRoot.FindNode(classifiedSpan.TextSpan));
var symbol = cache.SemanticModel.GetSymbolInfo(node).Symbol ?? cache.SemanticModel.GetDeclaredSymbol(node);
yield return(GetTagSpan(node, classifiedSpan, snapshot, symbol, classificationTypeDictionary));
}
}
