private void AddClassificationFromToken(List <ClassificationSpan> classifications, ITextSnapshot textSnapshot, TTokenClass token)
{
// We don't necessarily map each token to a classification
string classificationName = _classificationNameProvider.GetClassificationName(token);
if (!string.IsNullOrEmpty(classificationName))
{
var ct = ClassificationRegistryService.GetClassificationType(classificationName);
if (ct != null)
{
Span tokenSpan = new Span(token.Start, token.Length);
ClassificationSpan cs = new ClassificationSpan(new SnapshotSpan(textSnapshot, tokenSpan), ct);
classifications.Add(cs);
}
}
}
private void AddClassificationFromCompositeToken(List <ClassificationSpan> classifications, ITextSnapshot textSnapshot, ICompositeToken composite)
{
string contentTypeName = composite.ContentType;
IClassificationNameProvider compositeNameProvider;
if (!_compositeClassificationNameProviders.TryGetValue(contentTypeName, out compositeNameProvider))
{
IContentType contentType = ContentTypeRegistryService.GetContentType(contentTypeName);
var providers = ComponentLocatorForContentType <IClassificationNameProvider, IComponentContentTypes> .
FilterByContentTypeExact(contentType, ClassificationNameProviders);
var lazyProvider = providers.FirstOrDefault();
Debug.Assert(lazyProvider != null);
if (lazyProvider != null)
{
compositeNameProvider = lazyProvider.Value;
_compositeClassificationNameProviders[contentTypeName] = compositeNameProvider;
}
}
foreach (object token in composite.TokenList)
{
// We don't necessarily map each token to a classification
ITextRange range;
string classificationName = compositeNameProvider.GetClassificationName(token, out range);
if (!string.IsNullOrEmpty(classificationName))
{
IClassificationType ct = ClassificationRegistryService.GetClassificationType(classificationName);
if (ct != null)
{
Span tokenSpan = new Span(range.Start, range.Length);
ClassificationSpan cs = new ClassificationSpan(new SnapshotSpan(textSnapshot, tokenSpan), ct);
classifications.Add(cs);
}
}
}
}
