| // Copyright (c) 2001-2009 Hartmut Kaiser |
| // |
| // 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) |
| |
| #if !defined(BOOST_SPIRIT_SUPPORT_META_FUNCTION_HOLDER_SEP_03_2007_0302PM) |
| #define BOOST_SPIRIT_SUPPORT_META_FUNCTION_HOLDER_SEP_03_2007_0302PM |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
| #pragma once // MS compatible compilers support #pragma once |
| #endif |
| |
| #include <boost/mpl/if.hpp> |
| #include <boost/type_traits/is_same.hpp> |
| #include <boost/spirit/home/support/unused.hpp> |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace spirit |
| { |
| namespace detail |
| { |
| template <typename Functor, typename ParameterMF> |
| struct make_function_holder_base |
| { |
| typedef typename mpl::if_< |
| is_same<Functor, ParameterMF>, unused_type, ParameterMF |
| >::type type; |
| }; |
| } |
| |
| template <typename Functor, typename ParameterMF> |
| struct meta_function_holder |
| : spirit::detail::make_function_holder_base<Functor, ParameterMF>::type |
| { |
| private: |
| typedef typename |
| spirit::detail::make_function_holder_base<Functor, ParameterMF>::type |
| base_type; |
| |
| public: |
| meta_function_holder() |
| {} |
| |
| meta_function_holder(ParameterMF const& mf) |
| : base_type(mf) |
| {} |
| }; |
| |
| }} |
| |
| #endif |