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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/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
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