public IEnumerable <ITagSpan <IClassificationTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
var syntaxTreeAndSnapshot = ParserService.SyntaxTreeAndSnapshot;
if (syntaxTreeAndSnapshot == null)
{
yield break;
}
foreach (var span in spans)
{
var extent = TextExtent.FromBounds(span.Start.Position, span.End.Position);
var result = SyntaxClassifier.Classify(syntaxTreeAndSnapshot.SyntaxTree.Root, extent);
foreach (var classifiedExtent in result)
{
_classificationMap.TryGetValue(classifiedExtent.Classification, out var ct);
if (ct == null)
{
continue;
}
var tokenSpan = new SnapshotSpan(syntaxTreeAndSnapshot.Snapshot, new Span(classifiedExtent.Extent.Start, classifiedExtent.Extent.Length));
var tagSpan = tokenSpan.TranslateTo(span.Snapshot, SpanTrackingMode.EdgeExclusive);
var tag = new ClassificationTag(ct);
yield return(new TagSpan <IClassificationTag>(tagSpan, tag));
}
}
}
public void SimpleSyntaxTest()
{
var source = SourceText.From(TestGd);
var tree = SyntaxTree.Parse(source);
Assert.That(tree.Diagnostics.Length, Is.EqualTo(0));
var classification = SyntaxClassifier.Classify(tree.Root);
Assert.That(classification.Length, Is.EqualTo(50));
var parts = tree.Root.ToSimplifiedText();
var txt = parts.JoinText();
var expected =
@"NAMESPACE ns
DIALOG DemoDialog
PROPERTIES
Title = ""DemoDialog""
END PROPERTIES
CONTROLS
END CONTROLS
END DIALOG DemoDialog
END NAMESPACE
";
Assert.That(txt, Is.EqualTo(expected));
var editorSettings = TextEditorSettings.Default.With(tabSize: 2);
parts = tree.Root.ToSimplifiedText(editorSettings);
txt = parts.JoinText();
expected =
@"NAMESPACE ns
DIALOG DemoDialog
PROPERTIES
Title = ""DemoDialog""
END PROPERTIES
CONTROLS
END CONTROLS
END DIALOG DemoDialog
END NAMESPACE
";
Assert.That(txt, Is.EqualTo(expected));
}
