// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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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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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
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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_CORE_MUTABLE_RANGE_HPP
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#define BOOST_GEOMETRY_CORE_MUTABLE_RANGE_HPP
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#include <cstddef>
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#include <type_traits>
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#include <boost/range/value_type.hpp>
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namespace boost { namespace geometry
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{
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namespace traits
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{
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/*!
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\brief Metafunction to define the argument passed to the three
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traits classes clear, push_back and resize
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\ingroup mutable_range
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*/
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template <typename Range>
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struct rvalue_type
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{
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typedef typename std::remove_reference<Range>::type& type;
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};
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/*!
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\brief Traits class to clear a geometry
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\ingroup mutable_range
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*/
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template <typename Range>
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struct clear
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{
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static inline void apply(typename rvalue_type<Range>::type range)
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{
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range.clear();
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}
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};
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/*!
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\brief Traits class to append a point to a range (ring, linestring, multi*)
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\ingroup mutable_range
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*/
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template <typename Range>
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struct push_back
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{
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typedef typename boost::range_value
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<
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typename std::remove_reference<Range>::type
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>::type item_type;
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static inline void apply(typename rvalue_type<Range>::type range,
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item_type const& item)
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{
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range.push_back(item);
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}
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};
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/*!
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\brief Traits class to append a point to a range (ring, linestring, multi*)
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\ingroup mutable_range
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*/
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template <typename Range>
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struct resize
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{
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static inline void apply(typename rvalue_type<Range>::type range,
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std::size_t new_size)
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{
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range.resize(new_size);
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}
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};
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} // namespace traits
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_CORE_MUTABLE_RANGE_HPP
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