77 lines
1.7 KiB
Plaintext
77 lines
1.7 KiB
Plaintext
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#ifndef BOOST_MPL_LIST_AUX_ITERATOR_HPP_INCLUDED
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#define BOOST_MPL_LIST_AUX_ITERATOR_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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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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// $Id$
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// $Date$
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// $Revision$
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#include <boost/mpl/iterator_tags.hpp>
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#include <boost/mpl/next_prior.hpp>
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#include <boost/mpl/deref.hpp>
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#include <boost/mpl/list/aux_/item.hpp>
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#include <boost/mpl/aux_/na.hpp>
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#include <boost/mpl/aux_/lambda_spec.hpp>
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#include <boost/mpl/aux_/config/ctps.hpp>
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namespace boost { namespace mpl {
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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template< typename Node >
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struct l_iter
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{
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typedef aux::l_iter_tag tag;
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typedef forward_iterator_tag category;
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};
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template< typename Node >
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struct deref< l_iter<Node> >
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{
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typedef typename Node::item type;
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};
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template< typename Node >
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struct next< l_iter<Node> >
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{
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typedef l_iter< typename Node::next > type;
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};
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#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template< typename Node >
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struct l_iter
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{
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typedef aux::l_iter_tag tag;
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typedef forward_iterator_tag category;
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typedef typename Node::item type;
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typedef l_iter< typename mpl::next<Node>::type > next;
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};
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#endif
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template<> struct l_iter<l_end>
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{
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typedef aux::l_iter_tag tag;
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typedef forward_iterator_tag category;
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#if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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typedef na type;
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typedef l_iter next;
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#endif
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};
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BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(1, l_iter)
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}}
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#endif // BOOST_MPL_LIST_AUX_ITERATOR_HPP_INCLUDED
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