ceph/src/boost/libs/python/src/object/stl_iterator.cpp

   1 // Copyright Eric Niebler 2005.
   2 // Distributed under the Boost Software License, Version 1.0. (See
   3 // accompanying file LICENSE_1_0.txt or copy at
   4 // http://www.boost.org/LICENSE_1_0.txt)
   5 //
   6 // Credits:
   7 //   Andreas Kl\:ockner for fixing increment() to handle
   8 //   error conditions.
   9
  10 #include <boost/python/object.hpp>
  11 #include <boost/python/handle.hpp>
  12 #include <boost/python/object/stl_iterator_core.hpp>
  13
  14 namespace boost { namespace python { namespace objects
  15 {
  16
  17 stl_input_iterator_impl::stl_input_iterator_impl()
  18   : it_()
  19   , ob_()
  20 {
  21 }
  22
  23 stl_input_iterator_impl::stl_input_iterator_impl(boost::python::object const &ob)
  24   : it_(ob.attr("__iter__")())
  25   , ob_()
  26 {
  27     this->increment();
  28 }
  29
  30 void stl_input_iterator_impl::increment()
  31 {
  32     this->ob_ = boost::python::handle<>(
  33         boost::python::allow_null(PyIter_Next(this->it_.ptr())));
  34     if (PyErr_Occurred())
  35         throw boost::python::error_already_set();
  36 }
  37
  38 bool stl_input_iterator_impl::equal(stl_input_iterator_impl const &that) const
  39 {
  40     return !this->ob_ == !that.ob_;
  41 }
  42
  43 boost::python::handle<> const &stl_input_iterator_impl::current() const
  44 {
  45     return this->ob_;
  46 }
  47
  48 }}} // namespace boost::python::objects