| /*============================================================================= |
| Copyright (c) 2001-2006 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/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; |
| |
| 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; |
| |
| static type |
| call(Sequence& s) |
| { |
| return type(s.first1(), s.first2(), s.f); |
| } |
| }; |
| }; |
| } |
| }} |
| |
| #endif |
| |
| |