Chris@16: // Boost.Geometry Index
Chris@16: //
Chris@16: // Query range adaptor
Chris@16: //
Chris@16: // Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland.
Chris@16: //
Chris@16: // Use, modification and distribution is subject to the Boost Software License,
Chris@16: // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_GEOMETRY_INDEX_ADAPTORS_QUERY_HPP
Chris@16: #define BOOST_GEOMETRY_INDEX_ADAPTORS_QUERY_HPP
Chris@16: 
Chris@16: /*!
Chris@16: \defgroup adaptors Adaptors (boost::geometry::index::adaptors::)
Chris@16: */
Chris@16: 
Chris@16: namespace boost { namespace geometry { namespace index {
Chris@16: 
Chris@16: namespace adaptors {
Chris@16: 
Chris@16: namespace detail {
Chris@16: 
Chris@16: template <typename Index>
Chris@16: class query_range
Chris@16: {
Chris@16:     BOOST_MPL_ASSERT_MSG(
Chris@16:         (false),
Chris@16:         NOT_IMPLEMENTED_FOR_THIS_INDEX,
Chris@16:         (query_range));
Chris@16: 
Chris@16:     typedef int* iterator;
Chris@16:     typedef const int* const_iterator;
Chris@16: 
Chris@16:     template <typename Predicates>
Chris@16:     inline query_range(
Chris@16:         Index const&,
Chris@16:         Predicates const&)
Chris@16:     {}
Chris@16: 
Chris@16:     inline iterator begin() { return 0; }
Chris@16:     inline iterator end() { return 0; }
Chris@16:     inline const_iterator begin() const { return 0; }
Chris@16:     inline const_iterator end() const { return 0; }
Chris@16: };
Chris@16: 
Chris@16: // TODO: awulkiew - consider removing reference from predicates
Chris@16: 
Chris@16: template<typename Predicates>
Chris@16: struct query
Chris@16: {
Chris@16:     inline explicit query(Predicates const& pred)
Chris@16:         : predicates(pred)
Chris@16:     {}
Chris@16: 
Chris@16:     Predicates const& predicates;
Chris@16: };
Chris@16: 
Chris@16: template<typename Index, typename Predicates>
Chris@16: index::adaptors::detail::query_range<Index>
Chris@16: operator|(
Chris@16:     Index const& si,
Chris@16:     index::adaptors::detail::query<Predicates> const& f)
Chris@16: {
Chris@16:     return index::adaptors::detail::query_range<Index>(si, f.predicates);
Chris@16: }
Chris@16: 
Chris@16: } // namespace detail
Chris@16: 
Chris@16: /*!
Chris@16: \brief The query index adaptor generator.
Chris@16: 
Chris@16: \ingroup adaptors
Chris@16: 
Chris@16: \param pred   Predicates.
Chris@16: */
Chris@16: template <typename Predicates>
Chris@16: detail::query<Predicates>
Chris@16: queried(Predicates const& pred)
Chris@16: {
Chris@16:     return detail::query<Predicates>(pred);
Chris@16: }
Chris@16: 
Chris@16: } // namespace adaptors
Chris@16: 
Chris@16: }}} // namespace boost::geometry::index
Chris@16: 
Chris@16: #endif // BOOST_GEOMETRY_INDEX_ADAPTORS_QUERY_HPP