private bool Invoke()

in src/StructuredLogViewer/Controls/BuildControl.xaml.cs [1586:1646]
53 lines of code
17 McCabe index (conditional complexity)

        private bool Invoke(BaseNode treeNode)
        {
            if (treeNode == null)
            {
                return false;
            }

            try
            {
                switch (treeNode)
                {
                    case AbstractDiagnostic diagnostic:
                        var path = diagnostic.File;
                        if (!DisplayFile(path, diagnostic.LineNumber) &&
                            path != null &&
                            !Path.IsPathRooted(path) &&
                            diagnostic.ProjectFile != null)
                        {
                            // path must be relative, try to normalize:
                            path = Path.Combine(Path.GetDirectoryName(diagnostic.ProjectFile), path);
                            return DisplayFile(path, diagnostic.LineNumber, diagnostic.ColumnNumber);
                        }

                        break;
                    case Target target:
                        return DisplayTarget(target.SourceFilePath, target.Name);
                    case Task task:
                        return DisplayTask(task);
                    case AddItem addItem:
                        return DisplayAddRemoveItem(addItem.Parent, addItem.LineNumber ?? 0);
                    case RemoveItem removeItem:
                        return DisplayAddRemoveItem(removeItem.Parent, removeItem.LineNumber ?? 0);
                    case IHasSourceFile hasSourceFile when hasSourceFile.SourceFilePath != null:
                        int line = 0;
                        var hasLine = hasSourceFile as IHasLineNumber;
                        if (hasLine != null)
                        {
                            line = hasLine.LineNumber ?? 0;
                        }

                        ProjectEvaluation evaluation = null;
                        if (hasSourceFile is TreeNode node)
                        {
                            // TODO: https://github.com/KirillOsenkov/MSBuildStructuredLog/issues/392
                            evaluation = node.GetNearestParentOrSelf<ProjectEvaluation>();
                        }

                        return DisplayFile(hasSourceFile.SourceFilePath, line, evaluation: evaluation);
                    case SourceFileLine sourceFileLine when sourceFileLine.Parent is SourceFile sourceFile && sourceFile.SourceFilePath != null:
                        return DisplayFile(sourceFile.SourceFilePath, sourceFileLine.LineNumber);
                    default:
                        return false;
                }
            }
            catch
            {
                // in case our guessing of file path goes awry
            }

            return false;
        }