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3rdparty/boost_1_81_0/boost/test/utils/rtti.hpp 1.8 KB
0b6a182c   Hu Chunming   添加无鉴权注册和注销
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  //  (C) Copyright Gennadiy Rozental 2001.
  //  Distributed under the Boost Software License, Version 1.0.
  //  (See accompanying file LICENSE_1_0.txt or copy at
  //  http://www.boost.org/LICENSE_1_0.txt)
  
  //  See http://www.boost.org/libs/test for the library home page.
  //
  //  File        : $RCSfile$
  //
  //  Version     : $Revision$
  //
  //  Description : simple facilities for accessing type information at runtime
  // ***************************************************************************
  
  #ifndef BOOST_TEST_UTILS_RTTI_HPP
  #define BOOST_TEST_UTILS_RTTI_HPP
  
  // C Runtime
  #include <cstddef>
  #include <boost/test/detail/config.hpp>
  
  namespace boost {
  namespace rtti {
  
  // ************************************************************************** //
  // **************                   rtti::type_id              ************** //
  // ************************************************************************** //
  
  typedef std::ptrdiff_t id_t;
  
  namespace rtti_detail {
  
  template<typename T>
  struct BOOST_TEST_DECL rttid_holder {
      static id_t id() { return reinterpret_cast<id_t>( &inst() ); }
  
  private:
      struct rttid {};
  
      static rttid const& inst() { static rttid s_inst; return s_inst; }
  };
  
  } // namespace rtti_detail
  
  //____________________________________________________________________________//
  
  template<typename T>
  BOOST_TEST_DECL inline id_t
  type_id()
  {
      return rtti_detail::rttid_holder<T>::id();
  }
  
  //____________________________________________________________________________//
  
  #define BOOST_RTTI_SWITCH( type_id_ ) if( ::boost::rtti::id_t switch_by_id = type_id_ )
  #define BOOST_RTTI_CASE( type )       if( switch_by_id == ::boost::rtti::type_id<type>() )
  
  //____________________________________________________________________________//
  
  } // namespace rtti
  } // namespace boost
  
  #endif // BOOST_TEST_UTILS_RTTI_HPP