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1 /*=============================================================================
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2 Copyright (c) 2009 Hartmut Kaiser
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3
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4 Distributed under the Boost Software License, Version 1.0. (See accompanying
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5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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6 ==============================================================================*/
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7 #if !defined(BOOST_FUSION_NVIEW_ITERATOR_SEP_23_2009_0948PM)
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8 #define BOOST_FUSION_NVIEW_ITERATOR_SEP_23_2009_0948PM
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9
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10 #include <boost/fusion/support/config.hpp>
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11 #include <boost/fusion/support/iterator_base.hpp>
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12 #include <boost/fusion/support/category_of.hpp>
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13 #include <boost/fusion/sequence/intrinsic/begin.hpp>
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14 #include <boost/fusion/sequence/intrinsic/end.hpp>
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15 #include <boost/fusion/adapted/mpl/mpl_iterator.hpp>
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16
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17 #include <boost/fusion/view/nview/detail/size_impl.hpp>
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18 #include <boost/fusion/view/nview/detail/begin_impl.hpp>
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19 #include <boost/fusion/view/nview/detail/end_impl.hpp>
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20 #include <boost/fusion/view/nview/detail/deref_impl.hpp>
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21 #include <boost/fusion/view/nview/detail/value_of_impl.hpp>
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22 #include <boost/fusion/view/nview/detail/next_impl.hpp>
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23 #include <boost/fusion/view/nview/detail/prior_impl.hpp>
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24 #include <boost/fusion/view/nview/detail/at_impl.hpp>
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25 #include <boost/fusion/view/nview/detail/value_at_impl.hpp>
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26 #include <boost/fusion/view/nview/detail/advance_impl.hpp>
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27 #include <boost/fusion/view/nview/detail/distance_impl.hpp>
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28 #include <boost/fusion/view/nview/detail/equal_to_impl.hpp>
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29
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30 namespace boost { namespace fusion
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31 {
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32 struct nview_iterator_tag;
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33 struct random_access_traversal_tag;
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34
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35 template<typename Sequence, typename Pos>
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36 struct nview_iterator
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37 : iterator_base<nview_iterator<Sequence, Pos> >
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38 {
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39 typedef nview_iterator_tag fusion_tag;
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40 typedef random_access_traversal_tag category;
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41
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42 typedef Sequence sequence_type;
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43 typedef mpl_iterator<Pos> first_type;
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44
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45 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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46 explicit nview_iterator(Sequence& in_seq)
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47 : seq(in_seq) {}
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48
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49 Sequence& seq;
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50
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51 private:
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52 // silence MSVC warning C4512: assignment operator could not be generated
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53 nview_iterator& operator= (nview_iterator const&);
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54 };
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55
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56 }}
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57
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58 #ifdef BOOST_FUSION_WORKAROUND_FOR_LWG_2408
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59 namespace std
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60 {
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61 template <typename Sequence, typename Pos>
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62 struct iterator_traits< ::boost::fusion::nview_iterator<Sequence, Pos> >
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63 { };
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64 }
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65 #endif
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66
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67 #endif
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68
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69
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