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// Boost.Geometry
// Copyright (c) 2022, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
#ifndef BOOST_GEOMETRY_VIEWS_GEOMETRY_COLLECTION_VIEW_HPP
#define BOOST_GEOMETRY_VIEWS_GEOMETRY_COLLECTION_VIEW_HPP
#include <boost/core/addressof.hpp>
#include <boost/geometry/core/geometry_types.hpp>
#include <boost/geometry/core/tag.hpp>
#include <boost/geometry/core/tags.hpp>
#include <boost/geometry/core/visit.hpp>
#include <boost/geometry/util/sequence.hpp>
namespace boost { namespace geometry
{
namespace detail
{
template <typename Geometry>
class geometry_collection_view
{
public:
using iterator = Geometry const*;
using const_iterator = Geometry const*;
explicit geometry_collection_view(Geometry const& geometry)
: m_geometry(geometry)
{}
const_iterator begin() const { return boost::addressof(m_geometry); }
const_iterator end() const { return boost::addressof(m_geometry) + 1; }
private:
Geometry const& m_geometry;
};
} // namespace detail
#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
namespace traits
{
template <typename Geometry>
struct tag<geometry::detail::geometry_collection_view<Geometry>>
{
using type = geometry_collection_tag;
};
template <typename Geometry>
struct geometry_types<geometry::detail::geometry_collection_view<Geometry>>
{
using type = util::type_sequence<Geometry>;
};
template <typename Geometry>
struct iter_visit<geometry::detail::geometry_collection_view<Geometry>>
{
template <typename Function, typename Iterator>
static void apply(Function && function, Iterator iterator)
{
function(*iterator);
}
};
} // namespace traits
#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_VIEWS_GEOMETRY_COLLECTION_VIEW_HPP
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