158 lines
4.8 KiB
C++
158 lines
4.8 KiB
C++
// Boost.Geometry
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// Copyright (c) 2021, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_GEOMETRY_COLLECTION_CONCEPT_HPP
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#define BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_GEOMETRY_COLLECTION_CONCEPT_HPP
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#include <utility>
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#include <boost/concept_check.hpp>
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#include <boost/range/concepts.hpp>
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#include <boost/geometry/core/geometry_types.hpp>
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#include <boost/geometry/core/mutable_range.hpp>
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#include <boost/geometry/core/tag.hpp>
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#include <boost/geometry/core/tags.hpp>
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#include <boost/geometry/core/visit.hpp>
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#include <boost/geometry/geometries/concepts/box_concept.hpp>
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#include <boost/geometry/geometries/concepts/concept_type.hpp>
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#include <boost/geometry/geometries/concepts/linestring_concept.hpp>
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#include <boost/geometry/geometries/concepts/multi_point_concept.hpp>
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#include <boost/geometry/geometries/concepts/multi_linestring_concept.hpp>
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#include <boost/geometry/geometries/concepts/multi_polygon_concept.hpp>
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#include <boost/geometry/geometries/concepts/point_concept.hpp>
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#include <boost/geometry/geometries/concepts/polygon_concept.hpp>
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#include <boost/geometry/geometries/concepts/ring_concept.hpp>
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#include <boost/geometry/geometries/concepts/segment_concept.hpp>
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#include <boost/geometry/util/sequence.hpp>
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#include <boost/geometry/util/type_traits.hpp>
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namespace boost { namespace geometry { namespace concepts
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{
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namespace detail
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{
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template
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<
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typename Geometry,
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typename SubGeometry,
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typename Tag = typename tag<Geometry>::type,
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bool IsSubDynamicOrCollection = util::is_dynamic_geometry<SubGeometry>::value
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|| util::is_geometry_collection<SubGeometry>::value
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>
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struct GeometryType;
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// Prevent recursive concept checking
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template <typename Geometry, typename SubGeometry, typename Tag>
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struct GeometryType<Geometry, SubGeometry, Tag, true> {};
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template <typename Geometry, typename SubGeometry, typename Tag>
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struct GeometryType<Geometry const, SubGeometry, Tag, true> {};
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template <typename Geometry, typename SubGeometry>
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struct GeometryType<Geometry, SubGeometry, geometry_collection_tag, false>
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: concepts::concept_type<SubGeometry>::type
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{
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#ifndef DOXYGEN_NO_CONCEPT_MEMBERS
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BOOST_CONCEPT_USAGE(GeometryType)
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{
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Geometry* gc = nullptr;
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SubGeometry* sg = nullptr;
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traits::emplace_back<Geometry>::apply(*gc, std::move(*sg));
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}
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#endif // DOXYGEN_NO_CONCEPT_MEMBERS
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};
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template <typename Geometry, typename SubGeometry>
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struct GeometryType<Geometry const, SubGeometry, geometry_collection_tag, false>
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: concepts::concept_type<SubGeometry const>::type
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{};
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template <typename Geometry, typename ...SubGeometries>
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struct GeometryTypesPack {};
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template <typename Geometry, typename SubGeometry, typename ...SubGeometries>
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struct GeometryTypesPack<Geometry, SubGeometry, SubGeometries...>
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: GeometryTypesPack<Geometry, SubGeometries...>
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, GeometryType<Geometry, SubGeometry>
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{};
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template <typename Geometry, typename SubGeometriesSequence>
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struct GeometryTypes;
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template <typename Geometry, typename ...SubGeometries>
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struct GeometryTypes<Geometry, util::type_sequence<SubGeometries...>>
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: GeometryTypesPack<Geometry, SubGeometries...>
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{};
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} // namespace detail
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template <typename Geometry>
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struct GeometryCollection
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: boost::ForwardRangeConcept<Geometry>
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{
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#ifndef DOXYGEN_NO_CONCEPT_MEMBERS
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using sequence_t = typename traits::geometry_types<Geometry>::type;
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BOOST_CONCEPT_ASSERT( (detail::GeometryTypes<Geometry, sequence_t>) );
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BOOST_CONCEPT_USAGE(GeometryCollection)
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{
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Geometry* gc = nullptr;
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traits::clear<Geometry>::apply(*gc);
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traits::iter_visit<Geometry>::apply([](auto &&) {}, boost::begin(*gc));
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}
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#endif // DOXYGEN_NO_CONCEPT_MEMBERS
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};
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template <typename Geometry>
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struct ConstGeometryCollection
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: boost::ForwardRangeConcept<Geometry>
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{
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#ifndef DOXYGEN_NO_CONCEPT_MEMBERS
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using sequence_t = typename traits::geometry_types<Geometry>::type;
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BOOST_CONCEPT_ASSERT( (detail::GeometryTypes<Geometry const, sequence_t>) );
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BOOST_CONCEPT_USAGE(ConstGeometryCollection)
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{
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Geometry const* gc = nullptr;
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traits::iter_visit<Geometry>::apply([](auto &&) {}, boost::begin(*gc));
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}
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#endif // DOXYGEN_NO_CONCEPT_MEMBERS
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};
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template <typename Geometry>
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struct concept_type<Geometry, geometry_collection_tag>
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{
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using type = GeometryCollection<Geometry>;
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};
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template <typename Geometry>
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struct concept_type<Geometry const, geometry_collection_tag>
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{
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using type = ConstGeometryCollection<Geometry>;
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};
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}}} // namespace boost::geometry::concepts
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#endif // BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_GEOMETRY_COLLECTION_CONCEPT_HPP
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