bool ShouldProvideCompletions(SnapshotPoint triggerLocation, GuiDescriptionSyntax guiDescriptionSyntax, out SnapshotSpan applicableToSpan)
{
applicableToSpan = default;
// TODO FindTokenOrTrivia Methode?
var triggerToken = guiDescriptionSyntax.FindToken(triggerLocation);
if (triggerToken.IsMissing || triggerToken == default)
{
return(false);
}
int start = triggerToken.ExtentStart;
// Wir haben ein Token an der Trigger Location
if (triggerToken.Extent.IntersectsWith(triggerLocation))
{
// Keine Autovervollständigung in Zeichenfolgen
if (triggerToken.Kind == SyntaxKind.String)
{
return(false);
}
}
else
{
// Die Trigger Location befindet sich in den Trivias
var tokenExtent = triggerToken.Extent;
var syntaxTrivia = default(SyntaxTrivia);
if (triggerLocation < tokenExtent.Start)
{
syntaxTrivia = triggerToken.LeadingTrivia.FirstOrDefault(t => t.Extent.IntersectsWith(triggerLocation));
}
else if (triggerLocation > tokenExtent.End)
{
syntaxTrivia = triggerToken.TrailingTrivia.FirstOrDefault(t => t.Extent.IntersectsWith(triggerLocation));
}
// Kann es das geben?
if (syntaxTrivia == default)
{
return(false);
}
// Keine Vervollständigung in Kommentaren
if (syntaxTrivia.Kind == SyntaxKind.MultiLineCommentTrivia ||
syntaxTrivia.Kind == SyntaxKind.SingleLineCommentTrivia
)
{
return(false);
}
start = syntaxTrivia.ExtentStart;
}
applicableToSpan = new SnapshotSpan(new SnapshotPoint(triggerLocation.Snapshot, start), triggerLocation);
return(true);
}
public static ImmutableArray <OutlineElement> GetItems(GuiDescriptionSyntax syntaxRoot)
{
var outlineElement = OutlineBuilder.Build(syntaxRoot, detailed: true);
if (outlineElement == null)
{
return(ImmutableArray <OutlineElement> .Empty);
}
return(outlineElement.Flatten());
}
public static OutlineElement Build(GuiDescriptionSyntax syntaxRoot, bool detailed)
{
if (syntaxRoot == null)
{
return(null);
}
var builder = new OutlineBuilder(detailed);
// Startpunkt ist bisweilen immer der Container
var container = syntaxRoot.DescendantNodes().OfType <ContainerSyntax>().FirstOrDefault();
if (container == null)
{
return(null);
}
return(builder.Visit(container));
}
