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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\fusion\iterator\iterator_facade.hpp

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/*=============================================================================
    Copyright (c) 2001-2006 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_ITERATOR_FACADE_09252006_1011)
#define FUSION_ITERATOR_FACADE_09252006_1011

#include <boost/fusion/support/iterator_base.hpp>
#include <boost/fusion/iterator/detail/advance.hpp>
#include <boost/fusion/support/category_of.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/mpl/assert.hpp>

namespace boost { namespace fusion
{
    struct iterator_facade_tag;

    template <typename Derived, typename Category>
    struct iterator_facade : iterator_base<Derived>
    {
        typedef iterator_facade_tag fusion_tag;
        typedef Derived derived_type;
        typedef Category category;

        // default implementation
        template <typename I1, typename I2>
        struct equal_to // default implementation
            : is_same<
                typename I1::derived_type
              , typename I2::derived_type
            >
        {};

        // default implementation
        template <typename Iterator, typename N>
        struct advance :
            mpl::if_c<
                (N::value > 0)
              , advance_detail::forward<Iterator, N::value>
              , advance_detail::backward<Iterator, N::value>
            >::type
        {
            BOOST_MPL_ASSERT_NOT((traits::is_random_access<Iterator>));
        };
    };
}}

#endif

iterator_facade.hpp

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