| 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 COPY_CONST_REFERENCE_DWA2002131_HPP |
| 6 | # define COPY_CONST_REFERENCE_DWA2002131_HPP |
| 7 | |
| 8 | # include <boost/python/detail/prefix.hpp> |
| 9 | # include <boost/python/detail/indirect_traits.hpp> |
| 10 | # include <boost/mpl/if.hpp> |
| 11 | # include <boost/python/to_python_value.hpp> |
| 12 | |
| 13 | namespace boost { namespace python { |
| 14 | |
| 15 | namespace detail |
| 16 | { |
| 17 | template <class R> |
| 18 | struct copy_const_reference_expects_a_const_reference_return_type |
| 19 | # if defined(__GNUC__) || defined(__EDG__) |
| 20 | {} |
| 21 | # endif |
| 22 | ; |
| 23 | } |
| 24 | |
| 25 | template <class T> struct to_python_value; |
| 26 | |
| 27 | struct copy_const_reference |
| 28 | { |
| 29 | template <class T> |
| 30 | struct apply |
| 31 | { |
| 32 | typedef typename mpl::if_c< |
| 33 | indirect_traits::is_reference_to_const<T>::value |
| 34 | , to_python_value<T> |
| 35 | , detail::copy_const_reference_expects_a_const_reference_return_type<T> |
| 36 | >::type type; |
| 37 | }; |
| 38 | }; |
| 39 | |
| 40 | |
| 41 | }} // namespace boost::python |
| 42 | |
| 43 | #endif // COPY_CONST_REFERENCE_DWA2002131_HPP |
| 44 |