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3rdparty/boost_1_81_0/boost/python/detail/destroy.hpp 1.46 KB
0b6a182c   Hu Chunming   添加无鉴权注册和注销
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  // Copyright David Abrahams 2002.
  // 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)
  #ifndef DESTROY_DWA2002221_HPP
  # define DESTROY_DWA2002221_HPP
  
  # include <boost/python/detail/type_traits.hpp>
  # include <boost/detail/workaround.hpp>
  namespace boost { namespace python { namespace detail { 
  
  template <bool array> struct value_destroyer;
      
  template <>
  struct value_destroyer<false>
  {
      template <class T>
      static void execute(T const volatile* p)
      {
          p->~T();
      }
  };
  
  template <>
  struct value_destroyer<true>
  {
      template <class A, class T>
      static void execute(A*, T const volatile* const first)
      {
          for (T const volatile* p = first; p != first + sizeof(A)/sizeof(T); ++p)
          {
              value_destroyer<
                  is_array<T>::value
              >::execute(p);
          }
      }
      
      template <class T>
      static void execute(T const volatile* p)
      {
          execute(p, *p);
      }
  };
  
  template <class T>
  inline void destroy_referent_impl(void* p, T& (*)())
  {
      // note: cv-qualification needed for MSVC6
      // must come *before* T for metrowerks
      value_destroyer<
           (is_array<T>::value)
      >::execute((const volatile T*)p);
  }
  
  template <class T>
  inline void destroy_referent(void* p, T(*)() = 0)
  {
      destroy_referent_impl(p, (T(*)())0);
  }
  
  }}} // namespace boost::python::detail
  
  #endif // DESTROY_DWA2002221_HPP