/// <summary>
/// This method creates a dictionary key for a Using expression value that is bound to
/// a thread job script block parameter. PowerShell version 5.0+ recognizes this and performs
/// the correct Using parameter argument binding.
/// </summary>
/// <param name="usingAst">A using expression</param>
/// <returns>Base64 encoded string as the key of the UsingExpressionAst</returns>
private static string GetUsingExpressionKey(UsingExpressionAst usingAst)
{
string usingAstText = usingAst.ToString();
if (usingAst.SubExpression is VariableExpressionAst)
{
usingAstText = usingAstText.ToLowerInvariant();
}
return(Convert.ToBase64String(Encoding.Unicode.GetBytes(usingAstText.ToCharArray())));
}
public override AstVisitAction VisitUsingExpression(UsingExpressionAst usingExpressionAst)
{
Console.WriteLine("Visited an UsingExpressionAst.");
Console.WriteLine(" " + usingExpressionAst.ToString().Replace(Environment.NewLine, Environment.NewLine + " "));
return(AstVisitAction.Continue);
}