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1 | // (C) Copyright Gennadiy Rozental 2001. |
2 | // Distributed under the Boost Software License, Version 1.0. | |
3 | // (See accompanying file LICENSE_1_0.txt or copy at | |
4 | // http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | // See http://www.boost.org/libs/test for the library home page. | |
7 | // | |
8 | // File : $RCSfile$ | |
9 | // | |
10 | // Version : $Revision$ | |
11 | // | |
12 | // Description : simple facilities for accessing type information at runtime | |
13 | // *************************************************************************** | |
14 | ||
15 | #ifndef BOOST_TEST_UTILS_RTTI_HPP | |
16 | #define BOOST_TEST_UTILS_RTTI_HPP | |
17 | ||
18 | // C Runtime | |
19 | #include <cstddef> | |
20 | ||
21 | namespace boost { | |
22 | namespace rtti { | |
23 | ||
24 | // ************************************************************************** // | |
25 | // ************** rtti::type_id ************** // | |
26 | // ************************************************************************** // | |
27 | ||
28 | typedef std::ptrdiff_t id_t; | |
29 | ||
30 | namespace rtti_detail { | |
31 | ||
32 | template<typename T> | |
33 | struct rttid_holder { | |
34 | static id_t id() { return reinterpret_cast<id_t>( &inst() ); } | |
35 | ||
36 | private: | |
37 | struct rttid {}; | |
38 | ||
39 | static rttid const& inst() { static rttid s_inst; return s_inst; } | |
40 | }; | |
41 | ||
42 | } // namespace rtti_detail | |
43 | ||
44 | //____________________________________________________________________________// | |
45 | ||
46 | template<typename T> | |
47 | inline id_t | |
48 | type_id() | |
49 | { | |
50 | return rtti_detail::rttid_holder<T>::id(); | |
51 | } | |
52 | ||
53 | //____________________________________________________________________________// | |
54 | ||
55 | #define BOOST_RTTI_SWITCH( type_id_ ) if( ::boost::rtti::id_t switch_by_id = type_id_ ) | |
56 | #define BOOST_RTTI_CASE( type ) if( switch_by_id == ::boost::rtti::type_id<type>() ) | |
57 | ||
58 | //____________________________________________________________________________// | |
59 | ||
60 | } // namespace rtti | |
61 | } // namespace boost | |
62 | ||
63 | #endif // BOOST_TEST_UTILS_RTTI_HPP |