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 #include <boost/test/detail/config.hpp>
21 
22 namespace boost {
23 namespace rtti {
24 
25 // ************************************************************************** //
26 // **************                   rtti::type_id              ************** //
27 // ************************************************************************** //
28 
29 typedef std::ptrdiff_t id_t;
30 
31 namespace rtti_detail {
32 
33 template<typename T>
34 struct BOOST_TEST_DECL rttid_holder {
idboost::rtti::rtti_detail::rttid_holder35     static id_t id() { return reinterpret_cast<id_t>( &inst() ); }
36 
37 private:
38     struct rttid {};
39 
instboost::rtti::rtti_detail::rttid_holder40     static rttid const& inst() { static rttid s_inst; return s_inst; }
41 };
42 
43 } // namespace rtti_detail
44 
45 //____________________________________________________________________________//
46 
47 template<typename T>
48 BOOST_TEST_DECL inline id_t
type_id()49 type_id()
50 {
51     return rtti_detail::rttid_holder<T>::id();
52 }
53 
54 //____________________________________________________________________________//
55 
56 #define BOOST_RTTI_SWITCH( type_id_ ) if( ::boost::rtti::id_t switch_by_id = type_id_ )
57 #define BOOST_RTTI_CASE( type )       if( switch_by_id == ::boost::rtti::type_id<type>() )
58 
59 //____________________________________________________________________________//
60 
61 } // namespace rtti
62 } // namespace boost
63 
64 #endif // BOOST_TEST_UTILS_RTTI_HPP
65