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 |
64 | |