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// Boost.Bimap
//
// Copyright (c) 2006-2007 Matias Capeletto
//
// 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)
/// \file relation/support/is_tag_of_member_at.hpp
/// \brief is_tag_of_member_at<tag,relation> metafunction
#ifndef BOOST_BIMAP_RELATION_SUPPORT_IS_TAG_OF_MEMBER_AT_HPP
#define BOOST_BIMAP_RELATION_SUPPORT_IS_TAG_OF_MEMBER_AT_HPP
#if defined(_MSC_VER) && (_MSC_VER>=1200)
#pragma once
#endif
#include <boost/config.hpp>
#include <boost/bimap/relation/member_at.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/utility/enable_if.hpp>
#include <boost/bimap/relation/support/member_with_tag.hpp>
/** \struct boost::bimaps::relation::support::is_tag_of_member_at_left
\brief Metafunction to test if a user tag is refering to the left member.
\code
template< class Tag, class Relation >
struct is_tag_of_member_at_left : {true_|false_} {};
\endcode
This metafunction is somewhat redundant with member_with_tag, but it is included
because it is a lot easier to metaprogram with it. The result type is the
same that:
\code
is_same< member_with_tag<Tag,Relation>::type , member_at::left >::type
\endcode
See also member_with_tag, member_at, is_tag_of_member_at_right.
\ingroup relation_group
**/
/** \struct boost::bimaps::relation::support::is_tag_of_member_at_right
\brief Metafunction to test if a user tag is refering to the left member.
\code
template< class Tag, class Relation >
struct is_tag_of_member_at_right : {true_|false_} {};
\endcode
This metafunction is somewhat redundat with member_with_tag, but it is included
because it is a lot easier to metaprogram with it. The result type is the
same that:
\code
is_same< member_with_tag<Tag,Relation>::type , member_at::right >::type
\endcode
See also member_with_tag, member_at, is_tag_of_member_at_left.
\ingroup relation_group
**/
#ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
namespace boost {
namespace bimaps {
namespace relation {
namespace support {
// Metafunction is_tag_of_member_at_left
// Easiear metaprogramming
template
<
class Tag,
class Relation,
class Enable = void
>
struct is_tag_of_member_at_left :
::boost::mpl::false_ {};
template< class Tag, class Relation >
struct is_tag_of_member_at_left
<
Tag, Relation,
BOOST_DEDUCED_TYPENAME enable_if
<
is_same
<
BOOST_DEDUCED_TYPENAME member_with_tag<Tag,Relation>::type,
member_at::left
>
>::type
> :
::boost::mpl::true_ {};
// Metafunction is_tag_of_member_at_right
// Easiear metaprogramming
template
<
class Tag,
class Relation,
class Enable = void
>
struct is_tag_of_member_at_right :
::boost::mpl::false_ {};
template< class Tag, class Relation >
struct is_tag_of_member_at_right
<
Tag, Relation,
BOOST_DEDUCED_TYPENAME enable_if
<
is_same
<
BOOST_DEDUCED_TYPENAME member_with_tag<Tag,Relation>::type,
member_at::right
>
>::type
> :
::boost::mpl::true_ {};
// Metafunction is_tag_of_member_at_info
// Easiear metaprogramming
template
<
class Tag,
class Relation,
class Enable = void
>
struct is_tag_of_member_at_info :
::boost::mpl::false_ {};
template< class Tag, class Relation >
struct is_tag_of_member_at_info
<
Tag, Relation,
BOOST_DEDUCED_TYPENAME enable_if
<
is_same
<
BOOST_DEDUCED_TYPENAME member_with_tag<Tag,Relation>::type,
member_at::info
>
>::type
> :
::boost::mpl::true_ {};
} // namespace support
} // namespace relation
} // namespace bimaps
} // namespace boost
#endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
#endif // BOOST_BIMAP_RELATION_SUPPORT_IS_TAG_OF_MEMBER_AT_HPP
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