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+/*=============================================================================
+ Copyright (c) 2005-2011 Joel de Guzman
+ Copyright (c) 2005-2006 Dan Marsden
+
+ 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)
+==============================================================================*/
+#if !defined(BOOST_FUSION_FRONT_EXTENDED_DEQUE_26112006_2209)
+#define BOOST_FUSION_FRONT_EXTENDED_DEQUE_26112006_2209
+
+#include <boost/fusion/container/deque/detail/keyed_element.hpp>
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/minus.hpp>
+#include <boost/mpl/plus.hpp>
+#include <boost/fusion/sequence/intrinsic/size.hpp>
+
+#include <boost/type_traits/add_const.hpp>
+#include <boost/type_traits/add_reference.hpp>
+
+#include <boost/fusion/support/sequence_base.hpp>
+
+namespace boost { namespace fusion
+{
+ template<typename Deque, typename T>
+ struct front_extended_deque
+ : detail::keyed_element<typename Deque::next_down, T, Deque>,
+ sequence_base<front_extended_deque<Deque, T> >
+ {
+ typedef detail::keyed_element<typename Deque::next_down, T, Deque> base;
+ typedef mpl::int_<mpl::minus<typename Deque::next_down, mpl::int_<1> >::value> next_down;
+ typedef typename Deque::next_up next_up;
+ typedef mpl::plus<typename result_of::size<Deque>::type, mpl::int_<1> > size;
+
+ front_extended_deque(Deque const& deque, typename add_reference<typename add_const<T>::type>::type t)
+ : base(t, deque)
+ {}
+ };
+}}
+
+#endif