ceph/src/boost/boost/test/utils/rtti.hpp

   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 {
  35     static id_t id() { return reinterpret_cast<id_t>( &inst() ); }
  36
  37 private:
  38     struct rttid {};
  39
  40     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
  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