ceph/src/boost/libs/python/include/boost/python/converter/pytype_object_mgr_traits.hpp

   1 // Copyright David Abrahams 2002.
   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 #ifndef PYTYPE_OBJECT_MANAGER_TRAITS_DWA2002716_HPP
   6 # define PYTYPE_OBJECT_MANAGER_TRAITS_DWA2002716_HPP
   7
   8 # include <boost/python/detail/prefix.hpp>
   9 # include <boost/python/detail/raw_pyobject.hpp>
  10 # include <boost/python/cast.hpp>
  11 # include <boost/python/converter/pyobject_type.hpp>
  12 # include <boost/python/errors.hpp>
  13
  14 namespace boost { namespace python { namespace converter {
  15
  16 // Provide a forward declaration as a convenience for clients, who all
  17 // need it.
  18 template <class T> struct object_manager_traits;
  19
  20 // Derive specializations of object_manager_traits from this class
  21 // when T is an object manager for a particular Python type hierarchy.
  22 //
  23 template <PyTypeObject* pytype, class T>
  24 struct pytype_object_manager_traits
  25     : pyobject_type<T, pytype> // provides check()
  26 {
  27     BOOST_STATIC_CONSTANT(bool, is_specialized = true);
  28     static inline python::detail::new_reference adopt(PyObject*);
  29 };
  30
  31 //
  32 // implementations
  33 //
  34 template <PyTypeObject* pytype, class T>
  35 inline python::detail::new_reference pytype_object_manager_traits<pytype,T>::adopt(PyObject* x)
  36 {
  37     return python::detail::new_reference(python::pytype_check(pytype, x));
  38 }
  39
  40 }}} // namespace boost::python::converter
  41
  42 #endif // PYTYPE_OBJECT_MANAGER_TRAITS_DWA2002716_HPP