libs/python/src/wrapper.cpp

   1 // Copyright David Abrahams 2004. Distributed under the Boost
   2 // Software License, Version 1.0. (See accompanying
   3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/python/wrapper.hpp>
   6
   7 namespace boost { namespace python {
   8
   9 namespace detail
  10 {
  11   override wrapper_base::get_override(
  12       char const* name
  13     , PyTypeObject* class_object
  14   ) const
  15   {
  16       if (this->m_self)
  17       {
  18           if (handle<> m = handle<>(
  19                   python::allow_null(
  20                       ::PyObject_GetAttrString(
  21                           this->m_self, const_cast<char*>(name))))
  22           )
  23           {
  24               PyObject* borrowed_f = 0;
  25
  26               if (
  27                   PyMethod_Check(m.get())
  28                   && ((PyMethodObject*)m.get())->im_self == this->m_self
  29                   && class_object->tp_dict != 0
  30               )
  31               {
  32                   borrowed_f = ::PyDict_GetItemString(
  33                       class_object->tp_dict, const_cast<char*>(name));
  34
  35
  36               }
  37               if (borrowed_f != ((PyMethodObject*)m.get())->im_func)
  38                   return override(m);
  39           }
  40       }
  41       return override(handle<>(detail::none()));
  42   }
  43 }
  44
  45 #if 0
  46 namespace converter
  47 {
  48   PyObject* BOOST_PYTHON_DECL do_polymorphic_ref_to_python(
  49       python::detail::wrapper_base const volatile* x, type_info src
  50   )
  51   {
  52       if (x == 0)
  53       {
  54           ::PyErr_Format(
  55               PyExc_TypeError
  56             , "Attempting to returning pointer or reference to instance of %s\n"
  57               "for which no corresponding Python object exists. Wrap this function"
  58               "with a return return value policy"
  59           )
  60       }
  61   }
  62
  63 }
  64 #endif
  65
  66 }} // namespace boost::python::detail