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- /*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
- Copyright (c) 2005 Eric Niebler
- 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(FUSION_BEGIN_IMPL_07172005_0824)
- #define FUSION_BEGIN_IMPL_07172005_0824
- #include <boost/fusion/support/config.hpp>
- #include <boost/mpl/if.hpp>
- #include <boost/type_traits/is_const.hpp>
- namespace boost { namespace fusion
- {
- struct nil_;
- struct cons_tag;
- template <typename Car, typename Cdr>
- struct cons;
- template <typename Cons>
- struct cons_iterator;
- namespace extension
- {
- template <typename Tag>
- struct begin_impl;
- template <>
- struct begin_impl<cons_tag>
- {
- template <typename Sequence>
- struct apply
- {
- typedef cons_iterator<Sequence> type;
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- static type
- call(Sequence& t)
- {
- return type(t);
- }
- };
- };
- }
- }}
- #endif
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