In order for the virtual methods to be forwarded to Python, the C# class that's generated by NewTypeMaker has to "bake in" code for all the methods. You could probably write some Python-based checking code that examines a Python class C and makes sure that all of the interfaces it derives from and any abstract functions in its base class have Python implementations.
On Mon, Sep 6, 2010 at 10:27 AM, Michael Foord <fuzzy...@voidspace.org.uk>wrote: > Hello all, > > A friend was asking some advice about implementing an IronPython extension > system for a C# application. He wanted to use C# abstract classes so that he > would get an error attempting to instantiate a plugin class if it didn't > implement all the required methods. (The extensions subclass his abstract > class.) > > He pulled the Python class out of an extension script as a PythonType and > instantiated it with engine.Operations.Call(PythonClass) - however this > doesn't throw the exception he expected. (He does get MissingMember > exceptions trying to call methods that don't exist however.) > > Can this be made to work or is there a better way to do "interface > checking" of Python classes subclassing .NET types? > > All the best, > > Michael Foord > > > -- > http://www.ironpythoninaction.com/ > http://www.voidspace.org.uk/blog > > READ CAREFULLY. By accepting and reading this email you agree, on behalf of > your employer, to release me from all obligations and waivers arising from > any and all NON-NEGOTIATED agreements, licenses, terms-of-service, > shrinkwrap, clickwrap, browsewrap, confidentiality, non-disclosure, > non-compete and acceptable use policies (”BOGUS AGREEMENTS”) that I have > entered into with your employer, its partners, licensors, agents and > assigns, in perpetuity, without prejudice to my ongoing rights and > privileges. You further represent that you have the authority to release me > from any BOGUS AGREEMENTS on behalf of your employer. > > > _______________________________________________ > Users mailing list > Users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com >
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