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65 lines
1.6 KiB
65 lines
1.6 KiB
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#ifndef BOOST_MPL_ZIP_VIEW_HPP_INCLUDED |
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#define BOOST_MPL_ZIP_VIEW_HPP_INCLUDED |
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// Copyright Aleksey Gurtovoy 2000-2010 |
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// Copyright David Abrahams 2000-2002 |
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// |
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// Distributed under the Boost Software License, Version 1.0. |
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// (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// |
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// See http://www.boost.org/libs/mpl for documentation. |
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// $Id: zip_view.hpp 61591 2010-04-26 21:31:09Z agurtovoy $ |
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// $Date: 2010-04-26 17:31:09 -0400 (Mon, 26 Apr 2010) $ |
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// $Revision: 61591 $ |
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#include <boost/mpl/transform.hpp> |
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#include <boost/mpl/begin_end.hpp> |
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#include <boost/mpl/iterator_tags.hpp> |
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#include <boost/mpl/next.hpp> |
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#include <boost/mpl/lambda.hpp> |
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#include <boost/mpl/deref.hpp> |
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#include <boost/mpl/aux_/na_spec.hpp> |
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namespace boost { namespace mpl { |
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template< typename IteratorSeq > |
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struct zip_iterator |
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{ |
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typedef forward_iterator_tag category; |
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typedef typename transform1< |
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IteratorSeq |
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, deref<_1> |
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>::type type; |
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typedef zip_iterator< |
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typename transform1< |
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IteratorSeq |
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, mpl::next<_1> |
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>::type |
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> next; |
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}; |
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template< |
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typename BOOST_MPL_AUX_NA_PARAM(Sequences) |
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> |
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struct zip_view |
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{ |
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private: |
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typedef typename transform1< Sequences, mpl::begin<_1> >::type first_ones_; |
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typedef typename transform1< Sequences, mpl::end<_1> >::type last_ones_; |
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public: |
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typedef nested_begin_end_tag tag; |
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typedef zip_view type; |
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typedef zip_iterator<first_ones_> begin; |
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typedef zip_iterator<last_ones_> end; |
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}; |
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BOOST_MPL_AUX_NA_SPEC(1, zip_view) |
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}} |
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#endif // BOOST_MPL_ZIP_VIEW_HPP_INCLUDED
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