On Tue, Feb 17, 2009 at 2:32 AM, Robert Bradshaw
<[email protected]> wrote:
> On Feb 16, 2009, at 8:26 PM, Ondrej Certik wrote:
>
>> Currently I am using the following code and everything works for me:
>
> [...]
>
>> But it uses the PY_NEW macro:
>>
>> #define PY_NEW(zzz_type) \
>> (((PyTypeObject*)(zzz_type))->tp_new((PyTypeObject*)(zzz_type),
>> global_empty_tuple, NULL))
>>
>> and global_empty_tuple() that I had to initialize, etc. I copied this
>> from Sage. Is there some better way to do the above, so that I don't
>> have to include the special macro above and the corresponding .h and
>> .c files in my project?
>
> How about
>
> cdef extern from *:
> ctypedef struct RichPyTypeObject "PyTypeObject":
> object tp_new(object, object, PyObject*)
>
> cdef inline PY_NEW(T):
> return (<RichPyTypeObject*>x).tp_new(T, (), NULL)
This works, thanks! There were couple minor typos, e.g.:
object -> RichPyTypeObject*
T -> (<RichPyTypeObject*>T)
x -> T
So this is the correct code that works for me:
cdef extern from *:
ctypedef struct RichPyTypeObject "PyTypeObject":
object tp_new(RichPyTypeObject*, object, PyObject*)
cdef inline PY_NEW(T):
return (<RichPyTypeObject*>T).tp_new((<RichPyTypeObject*>T), (), NULL)
Ondrej
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