ceph/src/boost/libs/python/include/boost/python/suite/indexing/container_utils.hpp

   1
   2 //  (C) Copyright Joel de Guzman 2003.
   3 //  Distributed under the Boost Software License, Version 1.0. (See
   4 //  accompanying file LICENSE_1_0.txt or copy at
   5 //  http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #ifndef PY_CONTAINER_UTILS_JDG20038_HPP
   8 # define PY_CONTAINER_UTILS_JDG20038_HPP
   9
  10 # include <utility>
  11 # include <boost/foreach.hpp>
  12 # include <boost/python/object.hpp>
  13 # include <boost/python/handle.hpp>
  14 # include <boost/python/extract.hpp>
  15 # include <boost/python/stl_iterator.hpp>
  16
  17 namespace boost { namespace python { namespace container_utils {
  18
  19     template <typename Container>
  20     void
  21     extend_container(Container& container, object l)
  22     {
  23         typedef typename Container::value_type data_type;
  24
  25         //  l must be iterable
  26         BOOST_FOREACH(object elem,
  27             std::make_pair(
  28               boost::python::stl_input_iterator<object>(l),
  29               boost::python::stl_input_iterator<object>()
  30               ))
  31         {
  32             extract<data_type const&> x(elem);
  33             //  try if elem is an exact data_type type
  34             if (x.check())
  35             {
  36                 container.push_back(x());
  37             }
  38             else
  39             {
  40                 //  try to convert elem to data_type type
  41                 extract<data_type> x(elem);
  42                 if (x.check())
  43                 {
  44                     container.push_back(x());
  45                 }
  46                 else
  47                 {
  48                     PyErr_SetString(PyExc_TypeError, "Incompatible Data Type");
  49                     throw_error_already_set();
  50                 }
  51             }
  52         }
  53     }
  54
  55 }}} // namespace boost::python::container_utils
  56
  57 #endif