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#ifndef BOOST_MPL_ZIP_VIEW_HPP_INCLUDED
#define BOOST_MPL_ZIP_VIEW_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2000-2010
// Copyright David Abrahams 2000-2002
//
// 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)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Id$
// $Date$
// $Revision$
#include <boost/mpl/transform.hpp>
#include <boost/mpl/begin_end.hpp>
#include <boost/mpl/iterator_tags.hpp>
#include <boost/mpl/next.hpp>
#include <boost/mpl/lambda.hpp>
#include <boost/mpl/deref.hpp>
#include <boost/mpl/aux_/na_spec.hpp>
namespace boost { namespace mpl {
template< typename IteratorSeq >
struct zip_iterator
{
typedef forward_iterator_tag category;
typedef typename transform1<
IteratorSeq
, deref<_1>
>::type type;
typedef zip_iterator<
typename transform1<
IteratorSeq
, mpl::next<_1>
>::type
> next;
};
template<
typename BOOST_MPL_AUX_NA_PARAM(Sequences)
>
struct zip_view
{
private:
typedef typename transform1< Sequences, mpl::begin<_1> >::type first_ones_;
typedef typename transform1< Sequences, mpl::end<_1> >::type last_ones_;
public:
typedef nested_begin_end_tag tag;
typedef zip_view type;
typedef zip_iterator<first_ones_> begin;
typedef zip_iterator<last_ones_> end;
};
BOOST_MPL_AUX_NA_SPEC(1, zip_view)
}}
#endif // BOOST_MPL_ZIP_VIEW_HPP_INCLUDED
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