整理

include/boost/mpl/aux_/contains_impl.hpp

@@ -0,0 +1,61 @@
+
+#ifndef BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
+#define BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
+
+// Copyright Eric Friedman 2002
+// Copyright Aleksey Gurtovoy 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/contains_fwd.hpp>
+#include <boost/mpl/begin_end.hpp>
+#include <boost/mpl/find.hpp>
+#include <boost/mpl/not.hpp>
+#include <boost/mpl/aux_/traits_lambda_spec.hpp>
+#include <boost/mpl/aux_/config/forwarding.hpp>
+#include <boost/mpl/aux_/config/static_constant.hpp>
+
+#include <boost/type_traits/is_same.hpp>
+
+namespace boost { namespace mpl {
+
+template< typename Tag >
+struct contains_impl
+{
+    template< typename Sequence, typename T > struct apply
+#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
+        : not_< is_same<
+              typename find<Sequence,T>::type
+            , typename end<Sequence>::type
+            > >
+    {
+#else
+    {
+        typedef not_< is_same<
+              typename find<Sequence,T>::type
+            , typename end<Sequence>::type
+            > > type;
+
+        BOOST_STATIC_CONSTANT(bool, value = 
+              (not_< is_same<
+                  typename find<Sequence,T>::type
+                , typename end<Sequence>::type
+                > >::value)
+            );
+#endif
+    };
+};
+
+BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,contains_impl)
+
+}}
+
+#endif // BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED