[IronPython] IPy embedding problem

[Igor Elyas]

Bug added to DLR project.


From: Curt Hagenlocher 
Sent: Sunday, March 15, 2009 11:50 PM
To: Discussion of IronPython 
Subject: Re: [IronPython] IPy embedding problem


Can you please open a bug for this on the DLR site (http://www.codeplex.com/dlr)?  There's a few methods that basically have code looking like this:

switch (parameters.Length) {
    case 0: // blah
    case 1: // blah
    case 2: // blah
    default:
        throw new NotImplementedException();
}

and these clearly need to be cleaned up.  I'm pretty sure there's a workaround for this, but a quick scan through the source code doesn't reveal anything obvious to me :(.  One possibility is to get "Checker" from the scope -- it may just give you a delegate you can call directly. 



On Sun, Mar 15, 2009 at 9:35 AM, Igor Elyas <igor_elyas at hotmail.com> wrote:

  Hello

  This sample code throws error on Python object initialization:

              var engine = Python.CreateEngine();
              var Ops = engine.CreateOperations();
              engine.Runtime.LoadAssembly(typeof(Decimal).Assembly);
              var src =
                  @"
  class Checker:
    def __init__(self, one, two, three=''):
      self.one = one
      self.two = two
      self.tree = three
    def Call(self):
      return self.one + self.two + self.tree
  ";

              var cs = engine.CreateScriptSourceFromString(src, SourceCodeKind.Statements).Compile();
              cs.Execute();
              var tclass = cs.DefaultScope.GetVariable("Checker");
              object obj = cs.Engine.Operations.Call(tclass,"one","two","three");// throw NotImplementedException

              Console.WriteLine(obj);

  But if I use only 2 parameter in initialize/constructor such as :

             object obj = cs.Engine.Operations.Call(tclass,"one","two");

  , than all works fine. 

  What wrong ?

  Best regards
  Igor Elyas

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