private static CompilationUnitSyntax SortUsingDirectives(
this CompilationUnitSyntax compilation,
ref NamespaceDeclarationSyntax ns)
{
// TODO: Add removing of unused namespaces
var usings = compilation
.GetAllUsingDirectives(ns)
.OrderBy(u => u, UsingsAndExternAliasesDirectiveComparer.SystemFirstInstance)
.ToSyntaxList();
compilation = compilation.RemoveAllUsings(ref ns);
if (ns != null)
{
var newNs = ns.WithUsings(usings);
compilation = compilation.ReplaceNode(ns, newNs);
ns = newNs;
}
else
{
compilation = compilation.WithUsings(usings);
}
return(compilation);
}