// what was Syntax once is now SyntaxFactory
/// <summary>
/// Figures the usings and inserts them in the syntax tree.
/// </summary>
/// <param name="presentUsings">The usings already found in the source (have to be valid C#).</param>
/// <param name="optionalUsingsToAdd">All usings that need to be added.</param>
private static void _GetUsing(SyntaxList<UsingDirectiveSyntax> presentUsings, List<string> optionalUsingsToAdd = null)
{
var tmp = presentUsings.ToList();
var tmpList = new List<string>();
if (optionalUsingsToAdd != null && optionalUsingsToAdd.Any())
{
foreach (var item in optionalUsingsToAdd)
{
foreach (var syntax in tmp)
{
if (syntax.Name.GetText().ToString() == item)
{
tmpList.Add(item);
}
}
}
foreach (var item in tmpList)
{
tmp.RemoveAll(x => x.Name.GetText().ToString() == item);
}
}
foreach (var usn in optionalUsingsToAdd)
{
NameSyntax name = SyntaxFactory.IdentifierName(usn);
// to do: modify the tree and add the new usings
}
}
