[IronPython] .NET attributes for methods

[Shri Borde]

The clrtype module could be extended to make it possible to declare CLR interfaces in Python code. Something like:

class IFoo(object):
    __metaclass__ = ClrType.ClrInterface # Proposed way to indicate an interface
    @clrtype.accepts(int, str)
    @clrtype.returns(int)
    @clrtype.attribute(OperationContractAttribute)()
    def foo(i, s):raise RuntimeError("this should not get called")

This does not work today...

From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Lukas Cenovsky
Sent: Friday, October 30, 2009 10:41 AM
To: Discussion of IronPython
Subject: Re: [IronPython] .NET attributes for methods

Thanks.

I wanted to implement WCF service in pure Ironpython but I overlooked the [OperationContract] method attribute is used in the interface declaration. Anyway, thanks to class attributes it is now possible to implement the WCF service in IronPython and have only the interface done in C#. See my blog post:

http://gui-at.blogspot.com/2009/10/wcf-service-in-ironpython.html

DllImport is good to have too - I can get rid of of my Win32API.dll when simulating user's input<http://gui-at.blogspot.com/2008/07/simulate-users-input.html> :-)

--
-- Lukáš


Shri Borde wrote:

The following files extend DevHawk's blog and adds support for typed methods with attributes. It will be available as part of the samples released with the 2.6 RTM (over the next month). Do let us know if it works for you.



Also, I would be curious to know what scenario you need method attributes for (other than DllImport for pinvokes)...



-----Original Message-----

From: users-bounces at lists.ironpython.com<mailto:users-bounces at lists.ironpython.com> [mailto:users-bounces at lists.ironpython.com] On Behalf Of Lukas Cenovsky

Sent: Thursday, October 22, 2009 10:37 AM

To: Discussion of IronPython

Subject: [IronPython] .NET attributes for methods



Hi,

I have read all DewHawk blogposts about .Net attributes in IronPython

via __clrtype__ metaclass

(http://devhawk.net/CategoryView,category,__clrtype__.aspx). He

describes how to add attributes to classes but not to methods. Is there

any example how to add attributes to a method. It looks like method

generation is necessary (like for getter and setter or in

http://www.voidspace.org.uk/python/weblog/arch_d7_2007_03_10.shtml#e659)

but this is kind of deep magic for me...

Thanks.



--

-- Lukáš

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