Converting void * to PyObject * in Pyrex

[Ganesan R]

Hi,

Is there a mailing list for Pyrex? Since Greg appears to be active in this
newsgroup I hope he will notice this posting. Hey Greg, thanks for an
amazing tool :-).

I am experimenting with Pyrex to write a Python wrapper for OpenSLP
(http://www.openslp.org). I have now run into a road block. Most
of the APIs return results using a callback. In addition to exposing
the callback API to Python, I want to provide a convenience function to
return the results in a Python list.


Since the callback APIs take a cookie, the easiest way to do this is to pass
a Python list to the cookie. For eg, take this callback function in Pyrex

---------

ctypedef SLPBoolean SLPSrvTypeCallback(SLPHandle hSLP,
                                       char* pcSrvTypes,
                                       SLPError errCode,
                                       void *pvCookie)

cdef SLPBoolean MySLPSrvTypeCallback(SLPHandle slph, char *srvtype,
                                     SLPError errcode, void *cookie):

    srvtypelist = <PyObject *>cookie
    if errcode == SLP_OK:
        srvtypelist.append(srvtype)
    elif errcode == SLP_LAST_CALL:
        pass
    else:
        raise SLPException(errcode)

    return SLP_TRUE
-------

cookie is really a python list cast to void *. Pyrex complains:

/home/rganesan/sf/openslp/pyrex/slp.pyx:40:28: Declarator should be empty
/home/rganesan/sf/openslp/pyrex/slp.pyx:40:28: Expected '>'

How do I fix this?

Thanks.

Ganesan

-- 
Ganesan R