| /* Copyright 2003-2008 Joaquin M Lopez Munoz. |
| * 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) |
| * |
| * See http://www.boost.org/libs/multi_index for library home page. |
| */ |
| |
| #ifndef BOOST_MULTI_INDEX_DETAIL_HAS_TAG_HPP |
| #define BOOST_MULTI_INDEX_DETAIL_HAS_TAG_HPP |
| |
| #if defined(_MSC_VER)&&(_MSC_VER>=1200) |
| #pragma once |
| #endif |
| |
| #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ |
| #include <boost/mpl/contains.hpp> |
| |
| namespace boost{ |
| |
| namespace multi_index{ |
| |
| namespace detail{ |
| |
| /* determines whether an index type has a given tag in its tag list */ |
| |
| template<typename Tag> |
| struct has_tag |
| { |
| template<typename Index> |
| struct apply:mpl::contains<BOOST_DEDUCED_TYPENAME Index::tag_list,Tag> |
| { |
| }; |
| }; |
| |
| } /* namespace multi_index::detail */ |
| |
| } /* namespace multi_index */ |
| |
| } /* namespace boost */ |
| |
| #endif |