Added boost header

test/external/boost/mpl/aux_/insert_impl.hpp

@@ -0,0 +1,68 @@
+
+#ifndef BOOST_MPL_INSERT_IMPL_HPP_INCLUDED
+#define BOOST_MPL_INSERT_IMPL_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2004
+//
+// 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: insert_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
+// $Revision: 49267 $
+
+#include <boost/mpl/reverse_fold.hpp>
+#include <boost/mpl/iterator_range.hpp>
+#include <boost/mpl/clear.hpp>
+#include <boost/mpl/push_front.hpp>
+#include <boost/mpl/aux_/na_spec.hpp>
+#include <boost/mpl/aux_/traits_lambda_spec.hpp>
+#include <boost/type_traits/is_same.hpp>
+
+namespace boost { namespace mpl {
+
+// default implementation; conrete sequences might override it by 
+// specializing either the 'insert_impl' or the primary 'insert' template
+
+template< typename Tag >
+struct insert_impl
+{
+    template<
+          typename Sequence
+        , typename Pos
+        , typename T
+        >
+    struct apply
+    {
+        typedef iterator_range<
+              typename begin<Sequence>::type
+            , Pos
+            > first_half_;
+
+        typedef iterator_range<
+              Pos
+            , typename end<Sequence>::type
+            > second_half_;
+
+        typedef typename reverse_fold<
+              second_half_
+            , typename clear<Sequence>::type
+            , push_front<_,_>
+            >::type half_sequence_;
+
+        typedef typename reverse_fold<
+              first_half_
+            , typename push_front<half_sequence_,T>::type
+            , push_front<_,_>
+            >::type type;
+    };
+};
+
+BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(3,insert_impl)
+
+}}
+
+#endif // BOOST_MPL_INSERT_IMPL_HPP_INCLUDED