ceph/src/boost/libs/geometry/test/algorithms/set_operations/check_validity.hpp

   1 // Boost.Geometry
   2
   3 // Copyright (c) 2017 Barend Gehrels, Amsterdam, the Netherlands.
   4
   5 // Use, modification and distribution is subject to the Boost Software License,
   6 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #ifndef BOOST_GEOMETRY_TEST_SETOP_CHECK_VALIDITY_HPP
  10 #define BOOST_GEOMETRY_TEST_SETOP_CHECK_VALIDITY_HPP
  11
  12 #include <boost/foreach.hpp>
  13
  14 #include <boost/geometry/algorithms/is_valid.hpp>
  15
  16 template
  17 <
  18     typename Geometry,
  19     typename Tag = typename bg::tag<Geometry>::type
  20 >
  21 struct check_validity
  22 {
  23     static inline
  24     bool apply(Geometry const& geometry, std::string& message)
  25     {
  26         return bg::is_valid(geometry, message);
  27     }
  28 };
  29
  30 // Specialization for vector of <geometry> (e.g. rings)
  31 template <typename Geometry>
  32 struct check_validity<Geometry, void>
  33 {
  34     static inline
  35     bool apply(Geometry const& geometry, std::string& message)
  36     {
  37         typedef typename boost::range_value<Geometry>::type single_type;
  38         BOOST_FOREACH(single_type const& element, geometry)
  39         {
  40             if (! bg::is_valid(element, message))
  41             {
  42                 return false;
  43             }
  44         }
  45         return true;
  46     }
  47 };
  48
  49
  50 #endif // BOOST_GEOMETRY_TEST_SETOP_CHECK_VALIDITY_HPP