On 10/12/06, Michele Vallisneri <[EMAIL PROTECTED]> wrote:
> Does anybody here have experience about offering the array interface
> from a SWIG-wrapped C struct?
I have.
> I have tried the following, borrowing code from numpy's arrayobject.c:
>
> %extend real_vec_t {
> PyObject *__array_struct__() {
> /* From numpy/arrayobject.c/array_struct_get */
You are extending real_vec_t with a new METHOD, but what numpy
requests is an ATTRIBUTE. So, numpy simply queries your vec like:
arrstr = vec.__array_struct__
and not with a method call like this
arrstr = vec.__array_struct__()
So here is what I would do (can fail with some SWIG optimizations)
%extend Vec {
PyObject* __array_struct__ () { /* ... */ }
%pythoncode {
__array_struct__ = property(__array_struct__,
doc='Array protocol')
}
}
Hope you got the idea.
--
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
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