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c++ port of deque underway

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[SVN r77808]
This commit is contained in:
Joel de Guzman
2012-04-07 09:56:07 +00:00
parent e15c27bc8b
commit 93ce3bd9bf
10 changed files with 49 additions and 41 deletions
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22
include/boost/fusion/container/deque/detail/begin_impl.hpp
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@@ -2,7 +2,7 @@
Copyright (c) 2005-2012 Joel de Guzman
Copyright (c) 2005-2006 Dan Marsden
Distributed under the Boost Software License, Version 1.0. (See accompanying
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_DEQUE_BEGIN_IMPL_09122006_2034)
@@ -13,27 +13,29 @@
#include <boost/mpl/equal_to.hpp>
#include <boost/mpl/if.hpp>
namespace boost { namespace fusion {
namespace boost { namespace fusion {
struct deque_tag;
namespace extension
namespace extension
{
template<typename T>
struct begin_impl;
template<>
struct begin_impl<deque_tag>
{
template<typename Sequence>
struct apply
{
typedef typename mpl::if_<
mpl::equal_to<typename Sequence::next_down, typename Sequence::next_up>,
deque_iterator<Sequence, 0>,
deque_iterator<
Sequence, mpl::plus<typename Sequence::next_down, mpl::int_<1> >::value> >::type type;
typedef typename
mpl::if_c<
(Sequence::next_down::value == Sequence::next_up::value)
, deque_iterator<Sequence, 0>
, deque_iterator<Sequence, (Sequence::next_down::value + 1)>
>::type
type;
static type call(Sequence& seq)
{
return type(seq);