[Python-Dev] [Python-checkins] r43041 - python/trunk/Modules/_ctypes/cfield.c

[M.-A. Lemburg]

Thomas Heller wrote:
> Martin v. Löwis wrote:
>> M.-A. Lemburg wrote:
>>> I think it's only fair that I ask the patch authors to complete
>>> the PEP, since the ssize_t patch is causing extension authors
>>> enough trouble already.
>> Well, the PEP is complete as it stands. It's possible to provide
>> more guidelines, but the specification part of it says precisely
>> what I intend it to say. Also, the API documentation ought to
>> be in the Python documentation, and, for these changes, it is.
>>
>>> If you want quick adoption of the changes, you have
>>> to make it as easy as possible for the authors to port their
>>> extensions to the new API. Otherwise, we'll end up having
>>> quite a large number of users who can't switch to Python 2.5
>>> simply because their favorite extensions don't work with it.
>> I don't see how giving a complete list of all changed functions
>> helps in any way.
> 
> I'm not sure if this is what Marc-Andre means, but maybe these definitions
> could go into a new include file:
> 
>   #if (PY_VERSION_HEX < 0x02050000)
>    typedef int Py_ssize_t;
>    #define lenfunc inquiry
>    #define readbufferproc getreadbufferproc
>    #define writebufferproc getwritebufferproc
>    #define segcountproc getsegcountproc
>    #define charbufferproc getcharbufferproc
>    #define ssizeargfunc intargfunc
>    #define ssizessizeargfunc intintargfunc
>    #define ssizeobjargproc intobjargproc
>    #define ssizessizeobjargproc intintobjargproc
>    ... more defines
>   #endif

I think it would be enough to have this code snippet (completed,
of course) in the PEP, so that authors can grab it and paste it
into their extensions header files.

-- 
Marc-Andre Lemburg
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