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1 // Boost.Range library
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2 //
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3 // Copyright Neil Groves 2009. Use, modification and
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4 // distribution is subject to the Boost Software License, Version
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5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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6 // http://www.boost.org/LICENSE_1_0.txt)
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7 //
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8 //
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9 // For more information, see http://www.boost.org/libs/range/
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10 //
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11 #ifndef BOOST_RANGE_JOIN_HPP_INCLUDED
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12 #define BOOST_RANGE_JOIN_HPP_INCLUDED
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13
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14 #include <boost/config.hpp>
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15 #include <boost/range/detail/join_iterator.hpp>
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16 #include <boost/range/concepts.hpp>
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17 #include <boost/range/iterator_range.hpp>
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18
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19 namespace boost
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20 {
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21 namespace range_detail
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22 {
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23
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24 template<class SinglePassRange1, class SinglePassRange2>
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25 class joined_type
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26 {
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27 public:
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28 typedef iterator_range<
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29 range_detail::join_iterator<
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30 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
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31 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type,
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32 BOOST_DEDUCED_TYPENAME range_value<SinglePassRange1>::type
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33 >
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34 > type;
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35 };
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36
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37 } // namespace range_detail
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38
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39 namespace range
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40 {
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41
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42 template<class SinglePassRange1, class SinglePassRange2>
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43 class joined_range
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44 : public range_detail::joined_type<SinglePassRange1, SinglePassRange2>::type
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45 {
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46 typedef range_detail::join_iterator<
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47 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
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48 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type,
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49 BOOST_DEDUCED_TYPENAME range_value<SinglePassRange1>::type
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50 > iterator_t;
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51
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52 typedef BOOST_DEDUCED_TYPENAME range_detail::joined_type<
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53 SinglePassRange1, SinglePassRange2>::type base_t;
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54 public:
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55 joined_range(SinglePassRange1& rng1, SinglePassRange2& rng2)
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56 : base_t(
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57 iterator_t(rng1, rng2, range_detail::join_iterator_begin_tag()),
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58 iterator_t(rng1, rng2, range_detail::join_iterator_end_tag())
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59 )
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60 {
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61 }
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62 };
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63
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64 template<class SinglePassRange1, class SinglePassRange2>
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65 joined_range<const SinglePassRange1, const SinglePassRange2>
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66 join(const SinglePassRange1& r1, const SinglePassRange2& r2)
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67 {
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68 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
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69 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
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70
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71 return joined_range<const SinglePassRange1, const SinglePassRange2>(r1, r2);
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72 }
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73
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74 template<class SinglePassRange1, class SinglePassRange2>
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75 joined_range<SinglePassRange1, SinglePassRange2>
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76 join(SinglePassRange1& r1, SinglePassRange2& r2)
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77 {
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78 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
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79 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
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80
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81 return joined_range<SinglePassRange1, SinglePassRange2>(r1, r2);
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82 }
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83
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84 } // namespace range
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85
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86 using ::boost::range::joined_range;
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87 using ::boost::range::join;
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88
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89 } // namespace boost
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90
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91 #endif // include guard
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