133 lines
3.2 KiB
C++
133 lines
3.2 KiB
C++
// 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 support/map_by.hpp
|
|
/// \brief map_by<tag>(b) function
|
|
|
|
#ifndef BOOST_BIMAP_SUPPORT_MAP_BY_HPP
|
|
#define BOOST_BIMAP_SUPPORT_MAP_BY_HPP
|
|
|
|
#if defined(_MSC_VER)
|
|
#pragma once
|
|
#endif
|
|
|
|
#include <boost/config.hpp>
|
|
|
|
#include <boost/bimap/support/map_type_by.hpp>
|
|
#include <boost/bimap/relation/detail/access_builder.hpp>
|
|
|
|
|
|
#ifdef BOOST_BIMAP_ONLY_DOXYGEN_WILL_PROCESS_THE_FOLLOWING_LINES
|
|
|
|
namespace boost {
|
|
namespace bimaps {
|
|
namespace support {
|
|
|
|
/** \brief Gets a map view of a bidirectional map
|
|
|
|
Convertible to \c map_type_by<Tag,Bimap>::type
|
|
Instead of using \c map_type_by<Tag,Bimap>::type this functions use
|
|
\b Boost.call_traits to find the best way to return this value. To help
|
|
the user of this function the following metafunction is provided
|
|
\code
|
|
|
|
namespace result_of {
|
|
|
|
template< class Tag, class Bimap >
|
|
struct map_by( Bimap & b );
|
|
|
|
} // namespace result_of
|
|
|
|
\endcode
|
|
|
|
See also member_at, value_type_of.
|
|
\ingroup bimap_group
|
|
**/
|
|
|
|
template< class Tag, class Bimap >
|
|
BOOST_DEDUCED_TYPENAME result_of::map_by<Tag,Bimap>::type
|
|
map_by( Bimap & b );
|
|
|
|
} // namespace support
|
|
} // namespace bimaps
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_BIMAP_ONLY_DOXYGEN_WILL_PROCESS_THE_FOLLOWING_LINES
|
|
|
|
|
|
|
|
#ifndef BOOST_BIMAP_DOXIGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
|
|
|
|
namespace boost {
|
|
namespace bimaps {
|
|
namespace support {
|
|
|
|
// Since it is very error-prone to directly write the hole bunch
|
|
// of relation accesor. They are built from little macro blocks that
|
|
// are both more readable, leading to self docummenting code and a
|
|
// lot more easier to understand and maintain.
|
|
// It is very important to note that the three building blocks have
|
|
// to laid in the same namespace in order to work. There is also
|
|
// important to keep them in order.
|
|
// The forward declaration are not necessary but they help a lot to
|
|
// the reader, as they undercover what is the signature of the
|
|
// result code.
|
|
// In the end, it is not quicker to do it in this way because you
|
|
// write a lot. But this code has no complexity at all and almost
|
|
// every word writed is for documentation.
|
|
|
|
// Result of
|
|
// -------------------------------------------------------------------------
|
|
/*
|
|
namespace result_of {
|
|
|
|
template< class Tag, class Bimap >
|
|
struct map_by<Tag,Bimap>;
|
|
{
|
|
typedef -unspecified- type;
|
|
};
|
|
|
|
} // namespace result_of
|
|
|
|
*/
|
|
|
|
BOOST_BIMAP_SYMMETRIC_ACCESS_RESULT_OF_BUILDER
|
|
(
|
|
map_by,
|
|
map_type_by
|
|
)
|
|
|
|
// Implementation
|
|
// -------------------------------------------------------------------------
|
|
|
|
BOOST_BIMAP_SYMMETRIC_ACCESS_IMPLEMENTATION_BUILDER
|
|
(
|
|
map_by,
|
|
Bimap,
|
|
b,
|
|
return b.left,
|
|
return b.right
|
|
)
|
|
|
|
// Interface
|
|
// --------------------------------------------------------------------------
|
|
|
|
BOOST_BIMAP_SYMMETRIC_ACCESS_INTERFACE_BUILDER
|
|
(
|
|
map_by
|
|
)
|
|
|
|
} // namespace support
|
|
} // namespace bimaps
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_BIMAP_DOXIGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
|
|
|
|
#endif // BOOST_BIMAP_SUPPORT_MAP_BY_HPP
|
|
|