[Swig-devel] python: getting 'this' in C

[Lisandro D. <da...@gm...>]

Long time ago SWIG changed the way of getting 'this' from objetcs.
Originally, it used PyObject_GetAttr, but next it changed to look for
'this' in object's __dict__.

Since that change, as I need to use PyObject_GetAttr, I add to my
interface files a hack shown below.

There is any posibility to get this change go in SIWG. or perhaps
better to be included in SWIG python library as a '.i' file I can
include in my wrappers to get this behavior?

%runtime %{
SWIGINTERNINLINE PyObject*
_My_SWIG_GetThis(PyObject* obj) {
  if (!obj) return NULL;
  obj =3D PyObject_GetAttr(obj, SWIG_This());
  if (!obj) PyErr_Clear();
  return obj;
}
SWIGINTERNINLINE int
_My_SWIG_ConvertPtr(PyObject *obj, void **ptr,
=09=09       swig_type_info *ty, int flags) {
  int res =3D SWIG_ConvertPtr(obj, ptr, ty, flags);
  if (!SWIG_IsOK(res)) {
    PyObject* _this =3D _My_SWIG_GetThis(obj);
    res =3D SWIG_ConvertPtr(_this, ptr, ty, flags);
    Py_XDECREF(_this);
  }
  return res;
}
#undef  SWIG_ConvertPtr
#define SWIG_ConvertPtr(obj, pptr, type, flags) \
        _My_SWIG_ConvertPtr(obj, pptr, type, flags)
%}



--=20
Lisandro Dalc=EDn
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