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- /*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
- 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_07162005_1031)
- #define FUSION_BEGIN_IMPL_07162005_1031
- #include <boost/fusion/support/config.hpp>
- #include <boost/fusion/view/transform_view/transform_view_fwd.hpp>
- namespace boost { namespace fusion
- {
- template <typename First, typename F>
- struct transform_view_iterator;
- template <typename First1, typename First2, typename F>
- struct transform_view_iterator2;
- namespace extension
- {
- template <typename Tag>
- struct begin_impl;
- // Unary Version
- template <>
- struct begin_impl<transform_view_tag>
- {
- template <typename Sequence>
- struct apply
- {
- typedef typename Sequence::first_type first_type;
- typedef typename Sequence::transform_type transform_type;
- typedef transform_view_iterator<first_type, transform_type> type;
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- static type
- call(Sequence& s)
- {
- return type(s.first(), s.f);
- }
- };
- };
- // Binary Version
- template <>
- struct begin_impl<transform_view2_tag>
- {
- template <typename Sequence>
- struct apply
- {
- typedef typename Sequence::first1_type first1_type;
- typedef typename Sequence::first2_type first2_type;
- typedef typename Sequence::transform_type transform_type;
- typedef transform_view_iterator2<first1_type, first2_type, transform_type> type;
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- static type
- call(Sequence& s)
- {
- return type(s.first1(), s.first2(), s.f);
- }
- };
- };
- }
- }}
- #endif
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