Imported Upstream version 1.71.0
[platform/upstream/boost.git] / 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