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1 | // Copyright David Abrahams 2004. Distributed under the Boost |
2 | // Software License, Version 1.0. (See accompanying | |
3 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
4 | #ifndef UNWRAP_WRAPPER_DWA2004723_HPP | |
5 | # define UNWRAP_WRAPPER_DWA2004723_HPP | |
6 | ||
7 | # include <boost/python/detail/prefix.hpp> | |
8 | # include <boost/python/detail/is_wrapper.hpp> | |
9 | # include <boost/mpl/eval_if.hpp> | |
10 | # include <boost/mpl/identity.hpp> | |
11 | ||
12 | namespace boost { namespace python { namespace detail { | |
13 | ||
14 | template <class T> | |
15 | struct unwrap_wrapper_helper | |
16 | { | |
17 | typedef typename T::_wrapper_wrapped_type_ type; | |
18 | }; | |
19 | ||
20 | template <class T> | |
21 | struct unwrap_wrapper_ | |
22 | : mpl::eval_if<is_wrapper<T>,unwrap_wrapper_helper<T>,mpl::identity<T> > | |
23 | {}; | |
24 | ||
25 | template <class T> | |
26 | typename unwrap_wrapper_<T>::type* | |
27 | unwrap_wrapper(T*) | |
28 | { | |
29 | return 0; | |
30 | } | |
31 | ||
32 | }}} // namespace boost::python::detail | |
33 | ||
34 | #endif // UNWRAP_WRAPPER_DWA2004723_HPP |