projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // Boost.Geometry Index |
| 2 | // | |
| 3 | // Query range adaptor | |
| 4 | // | |
| 5 | // Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland. | |
| 6 | // | |
| 7 | // Use, modification and distribution is subject to the Boost Software License, | |
| 8 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
| 9 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 10 | ||
| 11 | #ifndef BOOST_GEOMETRY_INDEX_ADAPTORS_QUERY_HPP | |
| 12 | #define BOOST_GEOMETRY_INDEX_ADAPTORS_QUERY_HPP | |
| 13 | ||
| 14 | /*! | |
| 15 | \defgroup adaptors Adaptors (boost::geometry::index::adaptors::) | |
| 16 | */ | |
| 17 | ||
| 18 | namespace boost { namespace geometry { namespace index { | |
| 19 | ||
| 20 | namespace adaptors { | |
| 21 | ||
| 22 | namespace detail { | |
| 23 | ||
| 24 | template <typename Index> | |
| 25 | class query_range | |
| 26 | { | |
| 27 | BOOST_MPL_ASSERT_MSG( | |
| 28 | (false), | |
| 29 | NOT_IMPLEMENTED_FOR_THIS_INDEX, | |
| 30 | (query_range)); | |
| 31 | ||
| 32 | typedef int* iterator; | |
| 33 | typedef const int* const_iterator; | |
| 34 | ||
| 35 | template <typename Predicates> | |
| 36 | inline query_range( | |
| 37 | Index const&, | |
| 38 | Predicates const&) | |
| 39 | {} | |
| 40 | ||
| 41 | inline iterator begin() { return 0; } | |
| 42 | inline iterator end() { return 0; } | |
| 43 | inline const_iterator begin() const { return 0; } | |
| 44 | inline const_iterator end() const { return 0; } | |
| 45 | }; | |
| 46 | ||
| 47 | // TODO: awulkiew - consider removing reference from predicates | |
| 48 | ||
| 49 | template<typename Predicates> | |
| 50 | struct query | |
| 51 | { | |
| 52 | inline explicit query(Predicates const& pred) | |
| 53 | : predicates(pred) | |
| 54 | {} | |
| 55 | ||
| 56 | Predicates const& predicates; | |
| 57 | }; | |
| 58 | ||
| 59 | template<typename Index, typename Predicates> | |
| 60 | index::adaptors::detail::query_range<Index> | |
| 61 | operator|( | |
| 62 | Index const& si, | |
| 63 | index::adaptors::detail::query<Predicates> const& f) | |
| 64 | { | |
| 65 | return index::adaptors::detail::query_range<Index>(si, f.predicates); | |
| 66 | } | |
| 67 | ||
| 68 | } // namespace detail | |
| 69 | ||
| 70 | /*! | |
| 71 | \brief The query index adaptor generator. | |
| 72 | ||
| 73 | \ingroup adaptors | |
| 74 | ||
| 75 | \param pred Predicates. | |
| 76 | */ | |
| 77 | template <typename Predicates> | |
| 78 | detail::query<Predicates> | |
| 79 | queried(Predicates const& pred) | |
| 80 | { | |
| 81 | return detail::query<Predicates>(pred); | |
| 82 | } | |
| 83 | ||
| 84 | } // namespace adaptors | |
| 85 | ||
| 86 | }}} // namespace boost::geometry::index | |
| 87 | ||
| 88 | #endif // BOOST_GEOMETRY_INDEX_ADAPTORS_QUERY_HPP |