// Copyright Gottfried Ganßauge 2003.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
/*
* Generic Return value converter generator for opaque C++-pointers
*/
# ifndef RETURN_OPAQUE_POINTER_HPP_
# define RETURN_OPAQUE_POINTER_HPP_
# include <boost/python/detail/prefix.hpp>
# include <boost/python/opaque_pointer_converter.hpp>
# include <boost/python/detail/indirect_traits.hpp>
# include <boost/mpl/if.hpp>
namespace boost { namespace python {
namespace detail
{
template <class Pointer>
struct opaque_conversion_holder
{
inline PyObject *operator()(Pointer p) const
{
static opaque_pointer_converter<Pointer> converter (
typeid (Pointer).name());
return converter.convert(p);
}
};
template <class R>
struct return_opaque_pointer_requires_a_pointer_type
# if defined(__GNUC__) && __GNUC__ >= 3 || defined(__EDG__)
{}
# endif
;
}
struct return_opaque_pointer
{
template <class R>
struct apply
{
BOOST_STATIC_CONSTANT(
bool, ok = is_pointer<R>::value);
typedef typename mpl::if_c<
ok
, detail::opaque_conversion_holder<R>
, detail::return_opaque_pointer_requires_a_pointer_type<R>
>::type type;
};
};
}} // namespace boost::python
# endif // RETURN_OPAQUE_POINTER_HPP_