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