private static GraphNode?GetLocationNode(Location location, IGraphContext context, ProjectId projectId, CancellationToken cancellationToken)
{
var span = location.GetLineSpan();
if (location.SourceTree == null)
{
return(null);
}
var lineText = location.SourceTree.GetText(cancellationToken).Lines[span.StartLinePosition.Line].ToString();
var filePath = location.SourceTree.FilePath;
var sourceLocation = GraphBuilder.TryCreateSourceLocation(filePath, span.Span);
if (sourceLocation == null)
{
return(null);
}
var label = string.Format("{0} ({1}, {2}): {3}",
System.IO.Path.GetFileName(filePath),
span.StartLinePosition.Line + 1,
span.StartLinePosition.Character + 1,
lineText.TrimStart());
var locationNode = context.Graph.Nodes.GetOrCreate(sourceLocation.Value.CreateGraphNodeId(), label, CodeNodeCategories.SourceLocation);
locationNode[CodeNodeProperties.SourceLocation] = sourceLocation.Value;
locationNode[RoslynGraphProperties.ContextProjectId] = projectId;
locationNode[DgmlNodeProperties.Icon] = IconHelper.GetIconName("Reference", Accessibility.NotApplicable);
return(locationNode);
}