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1 | // Boost.Geometry Index |
2 | // | |
3 | // R-tree nodes static visitor related code | |
4 | // | |
5 | // Copyright (c) 2011-2014 Adam Wulkiewicz, Lodz, Poland. | |
6 | // | |
7 | // Use, modification and distribution is subject to the Boost Software License, | |
8 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
9 | // http://www.boost.org/LICENSE_1_0.txt) | |
10 | ||
11 | #ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_VARIANT_VISITOR_HPP | |
12 | #define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_VARIANT_VISITOR_HPP | |
13 | ||
14 | #include <boost/variant/apply_visitor.hpp> | |
15 | #include <boost/variant/get.hpp> | |
16 | #include <boost/variant/variant.hpp> | |
17 | ||
18 | namespace boost { namespace geometry { namespace index { | |
19 | ||
20 | namespace detail { namespace rtree { | |
21 | ||
22 | // nodes variants forward declarations | |
23 | ||
24 | template <typename Value, typename Parameters, typename Box, typename Allocators, typename Tag> | |
25 | struct variant_internal_node; | |
26 | ||
27 | template <typename Value, typename Parameters, typename Box, typename Allocators, typename Tag> | |
28 | struct variant_leaf; | |
29 | ||
30 | // nodes conversion | |
31 | ||
32 | template <typename V, typename Value, typename Parameters, typename Box, typename Allocators, typename Tag> | |
33 | inline V & get( | |
34 | boost::variant< | |
35 | variant_leaf<Value, Parameters, Box, Allocators, Tag>, | |
36 | variant_internal_node<Value, Parameters, Box, Allocators, Tag> | |
37 | > & v) | |
38 | { | |
39 | return boost::get<V>(v); | |
40 | } | |
41 | ||
42 | // apply visitor | |
43 | ||
44 | template <typename Visitor, typename Value, typename Parameters, typename Box, typename Allocators, typename Tag> | |
45 | inline void apply_visitor(Visitor & v, | |
46 | boost::variant< | |
47 | variant_leaf<Value, Parameters, Box, Allocators, Tag>, | |
48 | variant_internal_node<Value, Parameters, Box, Allocators, Tag> | |
49 | > & n) | |
50 | { | |
51 | boost::apply_visitor(v, n); | |
52 | } | |
53 | ||
54 | template <typename Visitor, typename Value, typename Parameters, typename Box, typename Allocators, typename Tag> | |
55 | inline void apply_visitor(Visitor & v, | |
56 | boost::variant< | |
57 | variant_leaf<Value, Parameters, Box, Allocators, Tag>, | |
58 | variant_internal_node<Value, Parameters, Box, Allocators, Tag> | |
59 | > const& n) | |
60 | { | |
61 | boost::apply_visitor(v, n); | |
62 | } | |
63 | ||
64 | }} // namespace detail::rtree | |
65 | ||
66 | }}} // namespace boost::geometry::index | |
67 | ||
68 | #endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_VARIANT_VISITOR_HPP |