wxPython/wxSWIG/swig_lib/python/defarg.swg

   1 /* This file defines an internal function for processing default arguments
   2    with shadow classes.
   3
   4    There seems to be no straightforward way to write a shadow functions
   5    involving default arguments. For example :
   6
   7              def foo(arg1,arg2,*args):
   8                      shadowc.foo(arg1,arg2,args)
   9
  10    This fails because args is now a tuple and SWIG doesn't know what to
  11    do with it.
  12
  13    This file allows a different approach :
  14
  15             def foo(arg1,arg2,*args):
  16                     shadowc.__call_defarg(shadowc.foo,(arg1,arg2,)+args)
  17
  18    Basically, we form a new tuple from the object, call this special
  19    __call_defarg method and it passes control to the real wrapper function.
  20    An ugly hack, but it works.
  21 */
  22
  23 static PyObject *swig_call_defargs(PyObject *self, PyObject *args) {
  24         PyObject *func;
  25         PyObject *parms;
  26
  27         if (!PyArg_ParseTuple(args,"OO",&func,&parms))
  28           return NULL;
  29
  30         if (!PyCallable_Check(func)) {
  31              PyErr_SetString(PyExc_TypeError, "__call_defarg : Need a callable object!");
  32              return NULL;
  33         }
  34         return PyEval_CallObject(func,parms);
  35
  36 }