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// Boost.Geometry
// Copyright (c) 2020-2021, 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_UTIL_TYPE_TRAITS_HPP
#define BOOST_GEOMETRY_UTIL_TYPE_TRAITS_HPP
#include <boost/geometry/core/tag.hpp>
#include <boost/geometry/core/tags.hpp>
#include <boost/geometry/util/type_traits_std.hpp>
namespace boost { namespace geometry
{
namespace util
{
template <typename T>
struct is_geometry
: bool_constant<! std::is_void<typename tag<T>::type>::value>
{};
template <typename T>
struct is_not_geometry
: std::is_void<typename tag<T>::type>
{};
template <typename T>
struct is_point
: std::is_same<point_tag, typename tag<T>::type>
{};
template <typename T>
struct is_multi_point
: std::is_same<multi_point_tag, typename tag<T>::type>
{};
template <typename T>
struct is_pointlike
: std::is_base_of<pointlike_tag, typename tag<T>::type>
{};
template <typename T>
struct is_segment
: std::is_same<segment_tag, typename tag<T>::type>
{};
template <typename T>
struct is_linestring
: std::is_same<linestring_tag, typename tag<T>::type>
{};
template <typename T>
struct is_multi_linestring
: std::is_same<multi_linestring_tag, typename tag<T>::type>
{};
template <typename T>
struct is_polylinear
: std::is_base_of<polylinear_tag, typename tag<T>::type>
{};
template <typename T>
struct is_linear
: std::is_base_of<linear_tag, typename tag<T>::type>
{};
template <typename T>
struct is_box
: std::is_same<box_tag, typename tag<T>::type>
{};
template <typename T>
struct is_ring
: std::is_same<ring_tag, typename tag<T>::type>
{};
template <typename T>
struct is_polygon
: std::is_same<polygon_tag, typename tag<T>::type>
{};
template <typename T>
struct is_multi_polygon
: std::is_same<multi_polygon_tag, typename tag<T>::type>
{};
template <typename T>
struct is_polygonal
: std::is_base_of<polygonal_tag, typename tag<T>::type>
{};
template <typename T>
struct is_areal
: std::is_base_of<areal_tag, typename tag<T>::type>
{};
template <typename T>
struct is_segmental
: bool_constant<is_linear<T>::value || is_polygonal<T>::value>
{};
template <typename T>
struct is_polysegmental
: bool_constant<is_polylinear<T>::value || is_polygonal<T>::value>
{};
template <typename T>
struct is_multi
: std::is_base_of<multi_tag, typename tag<T>::type>
{};
template <typename T>
struct is_multi_element
: bool_constant<is_point<T>::value || is_linestring<T>::value || is_polygon<T>::value>
{};
template <typename T>
struct is_single
: std::is_base_of<single_tag, typename tag<T>::type>
{};
template <typename T>
struct is_geometry_collection
: std::is_same<geometry_collection_tag, typename tag<T>::type>
{};
template <typename T>
struct is_dynamic_geometry
: std::is_same<dynamic_geometry_tag, typename tag<T>::type>
{};
template <typename Geometry, typename T = void>
struct enable_if_point
: std::enable_if<is_point<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_point_t = typename enable_if_point<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_multi_point
: std::enable_if<is_multi_point<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_multi_point_t = typename enable_if_multi_point<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_pointlike
: std::enable_if<is_pointlike<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_pointlike_t = typename enable_if_pointlike<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_segment
: std::enable_if<is_segment<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_segment_t = typename enable_if_segment<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_linestring
: std::enable_if<is_linestring<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_linestring_t = typename enable_if_linestring<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_multi_linestring
: std::enable_if<is_multi_linestring<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_multi_linestring_t = typename enable_if_multi_linestring<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_polylinear
: std::enable_if<is_polylinear<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_polylinear_t = typename enable_if_polylinear<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_linear
: std::enable_if<is_linear<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_linear_t = typename enable_if_linear<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_box
: std::enable_if<is_box<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_box_t = typename enable_if_box<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_ring
: std::enable_if<is_ring<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_ring_t = typename enable_if_ring<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_polygon
: std::enable_if<is_polygon<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_polygon_t = typename enable_if_polygon<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_multi_polygon
: std::enable_if<is_multi_polygon<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_multi_polygon_t = typename enable_if_multi_polygon<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_polygonal
: std::enable_if<is_polygonal<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_polygonal_t = typename enable_if_polygonal<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_areal
: std::enable_if<is_areal<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_areal_t = typename enable_if_areal<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_polysegmental
: std::enable_if<is_polysegmental<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_polysegmental_t = typename enable_if_polysegmental<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_dynamic_geometry
: std::enable_if<is_dynamic_geometry<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_dynamic_geometry_t = typename enable_if_dynamic_geometry<Geometry, T>::type;
template <typename Geometry, typename T = void>
struct enable_if_geometry_collection
: std::enable_if<is_geometry_collection<Geometry>::value, T>
{};
template <typename Geometry, typename T = void>
using enable_if_geometry_collection_t = typename enable_if_geometry_collection<Geometry, T>::type;
} // namespace util
// Deprecated utilities, defined for backward compatibility but might be
// removed in the future.
/*!
\brief Meta-function defining "true" for areal types (box, (multi)polygon, ring),
\note Used for tag dispatching and meta-function finetuning
\note Also a "ring" has areal properties within Boost.Geometry
\ingroup core
*/
using util::is_areal;
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_DETAIL_HPP
|
