43 lines
957 B
Plaintext
43 lines
957 B
Plaintext
/* Copyright 2003-2013 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)
|
|
#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
|