Add SCons configure checks

[senf.git] / boost_ext / boost / bimap / relation / support / get_pair_functor.hpp

diff --git a/boost_ext/boost/bimap/relation/support/get_pair_functor.hpp b/boost_ext/boost/bimap/relation/support/get_pair_functor.hpp
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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/get_pair_functor.hpp
+/// \brief get_pair_functor definition
+
+#ifndef BOOST_BIMAP_RELATION_SUPPORT_GET_PAIR_FUNCTOR_HPP
+#define BOOST_BIMAP_RELATION_SUPPORT_GET_PAIR_FUNCTOR_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER>=1200)
+#pragma once
+#endif
+
+#include <boost/config.hpp>
+
+#include <boost/bimap/relation/support/pair_by.hpp>
+
+namespace boost {
+namespace bimaps {
+namespace relation {
+namespace support {
+
+/// \brief A Functor that takes a relation as a parameter an return the desired view.
+/**
+
+This functor is included to help users of the relation class when using
+stl algorithms.
+
+See also member_at, pair_by().
+\ingroup relation_group
+
+                                                                                  **/
+
+template< class Tag, class Relation >
+struct get_pair_functor
+{
+    BOOST_DEDUCED_TYPENAME result_of::pair_by<Tag,Relation>::type
+    operator()( Relation & r ) const
+    {
+        return pair_by<Tag>(r);
+    }
+
+    BOOST_DEDUCED_TYPENAME result_of::pair_by<Tag,const Relation>::type
+    operator()( const Relation & r ) const
+    {
+        return pair_by<Tag>(r);
+    }
+};
+
+
+/// \brief A Functor that takes a relation as a parameter an return the above view.
+/**
+
+\ingroup relation_group
+                                                                                  **/
+
+template< class Relation >
+struct get_above_view_functor
+{
+    BOOST_DEDUCED_TYPENAME Relation::above_view &
+    operator()( Relation & r ) const
+    {
+        return r.get_view();
+    }
+
+    const BOOST_DEDUCED_TYPENAME Relation::above_view &
+    operator()( const Relation & r ) const
+    {
+        return r.get_view();
+    }
+};
+
+} // namespace support
+} // namespace relation
+} // namespace bimaps
+} // namespace boost
+
+
+#endif // BOOST_BIMAP_RELATION_SUPPORT_GET_PAIR_FUNCTOR_HPP
+