private static async Task <Document> AddUsingsToDocument(Document document)
{
var newSyntaxRoot = await document.GetSyntaxRootAsync();
newSyntaxRoot = UsingHandler.AddUsingIfNotExists(newSyntaxRoot, TaskUsing);
return(document.WithSyntaxRoot(newSyntaxRoot));
}
private async Task <Document> ReplaceThreadWithTask(Document document, SyntaxNode node,
CancellationToken cancellationToken)
{
var root = await document.GetSyntaxRootAsync(cancellationToken);
var argument = node.DescendantNodes().OfType <ArgumentSyntax>().First();
var invocationStatement = TaskSyntaxHelper.CreateInvocationStatement(argument);
var newRoot = root.ReplaceNode(node, invocationStatement);
newRoot = UsingHandler.AddUsingIfNotExists(newRoot, TaskUsing);
var newDocument = document.WithSyntaxRoot(newRoot);
return(newDocument);
}