整理

include/boost/mpl/map/aux_/insert_impl.hpp

@@ -0,0 +1,72 @@
+
+#ifndef BOOST_MPL_MAP_AUX_INSERT_IMPL_HPP_INCLUDED
+#define BOOST_MPL_MAP_AUX_INSERT_IMPL_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2003-2004
+// Copyright David Abrahams 2003-2004
+//
+// 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/mpl for documentation.
+
+// $Id$
+// $Date$
+// $Revision$
+
+#include <boost/mpl/insert_fwd.hpp>
+#include <boost/mpl/next_prior.hpp>
+#include <boost/mpl/map/aux_/contains_impl.hpp>
+#include <boost/mpl/map/aux_/item.hpp>
+#include <boost/mpl/map/aux_/tag.hpp>
+#include <boost/mpl/aux_/na.hpp>
+#include <boost/mpl/aux_/config/typeof.hpp>
+
+namespace boost { namespace mpl {
+
+namespace aux {
+template< typename Map, typename Pair > 
+struct map_insert_impl
+    : if_< 
+          contains_impl<aux::map_tag>::apply<Map,Pair>
+        , Map
+#if defined(BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES)
+        , m_item<
+              typename Pair::first
+            , typename Pair::second
+            , Map
+            >
+#else
+        , m_item<
+              Map::order::value
+            , typename Pair::first
+            , typename Pair::second
+            , Map
+            >
+#endif
+        >
+{
+};
+}
+
+template<>
+struct insert_impl< aux::map_tag >
+{
+    template< 
+          typename Map
+        , typename PosOrKey
+        , typename KeyOrNA
+        > 
+    struct apply
+        : aux::map_insert_impl<
+              Map
+            , typename if_na<KeyOrNA,PosOrKey>::type
+            >
+    {
+    };
+};
+
+}}
+
+#endif // BOOST_MPL_MAP_AUX_INSERT_IMPL_HPP_INCLUDED