// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2010 Alfredo Correa
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// Copyright (c) 2010-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2016 Norbert Wenzel
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// This file was modified by Oracle on 2020.
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// Modifications copyright (c) 2020, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_ARRAY_HPP
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#define BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_ARRAY_HPP
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#include <boost/config.hpp>
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#ifndef BOOST_NO_CXX11_HDR_ARRAY
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#define BOOST_GEOMETRY_ADAPTED_STD_ARRAY_TAG_DEFINED
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#include <array>
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#include <cstddef>
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#include <type_traits>
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#include <boost/geometry/core/access.hpp>
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#include <boost/geometry/core/cs.hpp>
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#include <boost/geometry/core/coordinate_dimension.hpp>
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#include <boost/geometry/core/coordinate_type.hpp>
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#include <boost/geometry/core/tags.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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namespace traits
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{
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#ifndef DOXYGEN_NO_DETAIL
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namespace detail
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{
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// Create class and specialization to indicate the tag
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// for normal cases and the case that the type of the std-array is arithmetic
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template <bool>
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struct std_array_tag
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{
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typedef geometry_not_recognized_tag type;
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};
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template <>
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struct std_array_tag<true>
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{
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typedef point_tag type;
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};
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} // namespace detail
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#endif // DOXYGEN_NO_DETAIL
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// Assign the point-tag, preventing arrays of points getting a point-tag
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template <typename CoordinateType, std::size_t DimensionCount>
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struct tag<std::array<CoordinateType, DimensionCount> >
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: detail::std_array_tag<std::is_arithmetic<CoordinateType>::value> {};
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template <typename CoordinateType, std::size_t DimensionCount>
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struct coordinate_type<std::array<CoordinateType, DimensionCount> >
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{
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typedef CoordinateType type;
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};
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template <typename CoordinateType, std::size_t DimensionCount>
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struct dimension<std::array<CoordinateType, DimensionCount> >
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: std::integral_constant<std::size_t, DimensionCount>
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{};
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template <typename CoordinateType, std::size_t DimensionCount, std::size_t Dimension>
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struct access<std::array<CoordinateType, DimensionCount>, Dimension>
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{
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static inline CoordinateType get(std::array<CoordinateType, DimensionCount> const& a)
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{
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return a[Dimension];
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}
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static inline void set(std::array<CoordinateType, DimensionCount>& a,
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CoordinateType const& value)
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{
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a[Dimension] = value;
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}
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};
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} // namespace traits
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#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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}} // namespace boost::geometry
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#define BOOST_GEOMETRY_REGISTER_STD_ARRAY_CS(CoordinateSystem) \
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namespace boost { namespace geometry { namespace traits { \
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template <class T, std::size_t N> \
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struct coordinate_system<std::array<T, N> > \
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{ \
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typedef CoordinateSystem type; \
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}; \
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}}}
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#else
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#warning "This file requires compiler and library support for the ISO C++ 2011 standard."
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#endif // BOOST_NO_CXX11_HDR_ARRAY
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#endif // BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_ARRAY_HPP
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