ceph/src/boost/libs/python/include/boost/python/converter/pyobject_type.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 PYOBJECT_TYPE_DWA2002720_HPP
   6 # define PYOBJECT_TYPE_DWA2002720_HPP
   7
   8 # include <boost/python/cast.hpp>
   9
  10 namespace boost { namespace python { namespace converter {
  11
  12 BOOST_PYTHON_DECL PyObject* checked_downcast_impl(PyObject*, PyTypeObject*);
  13
  14 // Used as a base class for specializations which need to provide
  15 // Python type checking capability.
  16 template <class Object, PyTypeObject* pytype>
  17 struct pyobject_type
  18 {
  19     static bool check(PyObject* x)
  20     {
  21         return ::PyObject_IsInstance(x, (PyObject*)pytype);
  22     }
  23
  24     static Object* checked_downcast(PyObject* x)
  25     {
  26         return python::downcast<Object>(
  27             (checked_downcast_impl)(x, pytype)
  28             );
  29     }
  30 #ifndef BOOST_PYTHON_NO_PY_SIGNATURES
  31     static PyTypeObject const* get_pytype() { return pytype; }
  32 #endif
  33 };
  34
  35 }}} // namespace boost::python::converter
  36
  37 #endif // PYOBJECT_TYPE_DWA2002720_HPP