forked from boostorg/fusion
Merge from trunk
[SVN r79274]
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@@ -1,8 +1,8 @@
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/*=============================================================================
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Copyright (c) 2005-2011 Joel de Guzman
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Copyright (c) 2005-2012 Joel de Guzman
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Copyright (c) 2005-2006 Dan Marsden
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(BOOST_FUSION_DEQUE_BEGIN_IMPL_09122006_2034)
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@@ -13,27 +13,29 @@
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#include <boost/mpl/equal_to.hpp>
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#include <boost/mpl/if.hpp>
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namespace boost { namespace fusion {
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namespace boost { namespace fusion
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{
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struct deque_tag;
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namespace extension
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namespace extension
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{
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template<typename T>
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struct begin_impl;
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template<>
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struct begin_impl<deque_tag>
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{
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template<typename Sequence>
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struct apply
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{
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typedef typename mpl::if_<
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mpl::equal_to<typename Sequence::next_down, typename Sequence::next_up>,
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deque_iterator<Sequence, 0>,
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deque_iterator<
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Sequence, mpl::plus<typename Sequence::next_down, mpl::int_<1> >::value> >::type type;
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typedef typename
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mpl::if_c<
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(Sequence::next_down::value == Sequence::next_up::value)
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, deque_iterator<Sequence, 0>
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, deque_iterator<Sequence, (Sequence::next_down::value + 1)>
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>::type
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type;
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static type call(Sequence& seq)
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{
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return type(seq);
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