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// Copyright David Abrahams 2002.
// 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)
#ifndef RETURN_INTERNAL_REFERENCE_DWA2002131_HPP
# define RETURN_INTERNAL_REFERENCE_DWA2002131_HPP
# include <boost/python/detail/prefix.hpp>
# include <boost/python/default_call_policies.hpp>
# include <boost/python/reference_existing_object.hpp>
# include <boost/python/with_custodian_and_ward.hpp>
# include <boost/mpl/if.hpp>
namespace boost { namespace python {
namespace detail
{
template <std::size_t>
struct return_internal_reference_owner_arg_must_be_greater_than_zero
# if defined(__GNUC__) || defined(__EDG__)
{}
# endif
;
}
template <std::size_t owner_arg = 1, class BasePolicy_ = default_call_policies>
struct return_internal_reference
: with_custodian_and_ward_postcall<0, owner_arg, BasePolicy_>
{
private:
BOOST_STATIC_CONSTANT(bool, legal = owner_arg > 0);
public:
typedef typename mpl::if_c<
legal
, reference_existing_object
, detail::return_internal_reference_owner_arg_must_be_greater_than_zero<owner_arg>
>::type result_converter;
};
}} // namespace boost::python
#endif // RETURN_INTERNAL_REFERENCE_DWA2002131_HPP
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