ceph/src/boost/boost/geometry/core/mutable_range.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
   6
   7 // This file was modified by Oracle on 2020.
   8 // Modifications copyright (c) 2020 Oracle and/or its affiliates.
   9 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  10
  11 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  12 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  13
  14 // Use, modification and distribution is subject to the Boost Software License,
  15 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  16 // http://www.boost.org/LICENSE_1_0.txt)
  17
  18 #ifndef BOOST_GEOMETRY_CORE_MUTABLE_RANGE_HPP
  19 #define BOOST_GEOMETRY_CORE_MUTABLE_RANGE_HPP
  20
  21
  22 #include <cstddef>
  23 #include <type_traits>
  24
  25 #include <boost/range/value_type.hpp>
  26
  27
  28 namespace boost { namespace geometry
  29 {
  30
  31
  32 namespace traits
  33 {
  34
  35 /*!
  36 \brief Metafunction to define the argument passed to the three
  37     traits classes clear, push_back and resize
  38 \ingroup mutable_range
  39  */
  40 template <typename Range>
  41 struct rvalue_type
  42 {
  43     typedef typename std::remove_reference<Range>::type& type;
  44 };
  45
  46
  47 /*!
  48 \brief Traits class to clear a geometry
  49 \ingroup mutable_range
  50  */
  51 template <typename Range>
  52 struct clear
  53 {
  54     static inline void apply(typename rvalue_type<Range>::type range)
  55     {
  56         range.clear();
  57     }
  58 };
  59
  60
  61 /*!
  62 \brief Traits class to append a point to a range (ring, linestring, multi*)
  63 \ingroup mutable_range
  64  */
  65 template <typename Range>
  66 struct push_back
  67 {
  68     typedef typename boost::range_value
  69         <
  70             typename std::remove_reference<Range>::type
  71         >::type item_type;
  72
  73     static inline void apply(typename rvalue_type<Range>::type range,
  74                  item_type const& item)
  75     {
  76         range.push_back(item);
  77     }
  78 };
  79
  80
  81 /*!
  82 \brief Traits class to append a point to a range (ring, linestring, multi*)
  83 \ingroup mutable_range
  84  */
  85 template <typename Range>
  86 struct resize
  87 {
  88     static inline void apply(typename rvalue_type<Range>::type range,
  89                 std::size_t new_size)
  90     {
  91         range.resize(new_size);
  92     }
  93 };
  94
  95
  96 } // namespace traits
  97
  98
  99 }} // namespace boost::geometry
 100
 101
 102 #endif // BOOST_GEOMETRY_CORE_MUTABLE_RANGE_HPP