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103 lines
2.5 KiB
103 lines
2.5 KiB
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#ifndef BOOST_MPL_VECTOR_AUX_ITEM_HPP_INCLUDED |
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#define BOOST_MPL_VECTOR_AUX_ITEM_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: item.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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// $Revision: 49267 $ |
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#include <boost/mpl/long.hpp> |
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#include <boost/mpl/void.hpp> |
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#include <boost/mpl/next_prior.hpp> |
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#include <boost/mpl/aux_/type_wrapper.hpp> |
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#include <boost/mpl/aux_/config/typeof.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_MPL_CFG_TYPEOF_BASED_SEQUENCES) |
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template< |
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typename T |
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, typename Base |
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, int at_front = 0 |
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> |
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struct v_item |
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: Base |
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{ |
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typedef typename Base::upper_bound_ index_; |
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typedef typename next<index_>::type upper_bound_; |
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typedef typename next<typename Base::size>::type size; |
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typedef Base base; |
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typedef v_item type; |
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// agurt 10/sep/04: MWCW <= 9.3 workaround here and below; the compiler |
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// breaks if using declaration comes _before_ the new overload |
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static aux::type_wrapper<T> item_(index_); |
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using Base::item_; |
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}; |
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template< |
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typename T |
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, typename Base |
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> |
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struct v_item<T,Base,1> |
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: Base |
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{ |
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typedef typename prior<typename Base::lower_bound_>::type index_; |
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typedef index_ lower_bound_; |
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typedef typename next<typename Base::size>::type size; |
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typedef Base base; |
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typedef v_item type; |
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static aux::type_wrapper<T> item_(index_); |
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using Base::item_; |
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}; |
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// "erasure" item |
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template< |
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typename Base |
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, int at_front |
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> |
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struct v_mask |
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: Base |
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{ |
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typedef typename prior<typename Base::upper_bound_>::type index_; |
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typedef index_ upper_bound_; |
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typedef typename prior<typename Base::size>::type size; |
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typedef Base base; |
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typedef v_mask type; |
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static aux::type_wrapper<void_> item_(index_); |
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using Base::item_; |
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}; |
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template< |
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typename Base |
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> |
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struct v_mask<Base,1> |
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: Base |
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{ |
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typedef typename Base::lower_bound_ index_; |
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typedef typename next<index_>::type lower_bound_; |
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typedef typename prior<typename Base::size>::type size; |
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typedef Base base; |
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typedef v_mask type; |
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static aux::type_wrapper<void_> item_(index_); |
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using Base::item_; |
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}; |
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#endif // BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES |
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}} |
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#endif // BOOST_MPL_VECTOR_AUX_ITEM_HPP_INCLUDED
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