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author | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 12:57:26 -0700 |
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committer | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 12:57:26 -0700 |
commit | 1a78a62555be32868418fe52f8e330c9d0f95d5a (patch) | |
tree | d3765a80e7d3b9640ec2e930743630cd6b9fce2b /boost/bimap/support/data_type_by.hpp | |
download | boost-1a78a62555be32868418fe52f8e330c9d0f95d5a.tar.gz boost-1a78a62555be32868418fe52f8e330c9d0f95d5a.tar.bz2 boost-1a78a62555be32868418fe52f8e330c9d0f95d5a.zip |
Imported Upstream version 1.49.0upstream/1.49.0
Diffstat (limited to 'boost/bimap/support/data_type_by.hpp')
-rw-r--r-- | boost/bimap/support/data_type_by.hpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/boost/bimap/support/data_type_by.hpp b/boost/bimap/support/data_type_by.hpp new file mode 100644 index 0000000000..c6d2e2cc99 --- /dev/null +++ b/boost/bimap/support/data_type_by.hpp @@ -0,0 +1,73 @@ +// 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/data_type_by.hpp +/// \brief Metafunction to access the data types of a bimap + +#ifndef BOOST_BIMAP_SUPPORT_DATA_TYPE_BY_HPP +#define BOOST_BIMAP_SUPPORT_DATA_TYPE_BY_HPP + +#if defined(_MSC_VER) && (_MSC_VER>=1200) +#pragma once +#endif + +#include <boost/config.hpp> + +#include <boost/bimap/relation/detail/metadata_access_builder.hpp> + +/** \struct boost::bimaps::support::data_type_by + +\brief Metafunction to obtain the data type of one of the sides in a bimap + +The tag parameter can be either a user defined tag or \c member_at::{side}. +This is the actual data type stored in the bimap. +\code + +template< class Tag, class Bimap > +struct data_type_by +{ + typedef typename Bimap::{side}_data_type type; +}; + +\endcode + +The following holds: + +\code + +BOOST_STATIC_ASSERT +( + is_same< data_type_by< member_at::left, bimap<A,B> >::type, A >::value +) + +\endcode + +See also member_at. +\ingroup bimap_group + **/ + +namespace boost { +namespace bimaps { +namespace support { + +// Implementation of data type of metafunction + +BOOST_BIMAP_SYMMETRIC_METADATA_ACCESS_BUILDER +( + data_type_by, + left_data_type, + right_data_type +) + +} // namespace support +} // namespace bimaps +} // namespace boost + + +#endif // BOOST_BIMAP_SUPPORT_DATA_TYPE_BY_HPP + |