ceph/src/boost/libs/python/include/boost/python/detail/void_ptr.hpp

   1 // Copyright David Abrahams 2002.
   2 // Distributed under the Boost Software License, Version 1.0. (See
   3 // accompanying file LICENSE_1_0.txt or copy at
   4 // http://www.boost.org/LICENSE_1_0.txt)
   5 #ifndef VOID_PTR_DWA200239_HPP
   6 # define VOID_PTR_DWA200239_HPP
   7
   8 # include <boost/type_traits/remove_cv.hpp>
   9
  10 namespace boost { namespace python { namespace detail {
  11
  12 template <class U>
  13 inline U& void_ptr_to_reference(void const volatile* p, U&(*)())
  14 {
  15     return *(U*)p;
  16 }
  17
  18 template <class T>
  19 inline void write_void_ptr(void const volatile* storage, void* ptr, T*)
  20 {
  21     *(T**)storage = (T*)ptr;
  22 }
  23
  24 // writes U(ptr) into the storage
  25 template <class U>
  26 inline void write_void_ptr_reference(void const volatile* storage, void* ptr, U&(*)())
  27 {
  28     // stripping CV qualification suppresses warnings on older EDGs
  29     typedef typename remove_cv<U>::type u_stripped;
  30     write_void_ptr(storage, ptr, u_stripped(0));
  31 }
  32
  33 }}} // namespace boost::python::detail
  34
  35 #endif // VOID_PTR_DWA200239_HPP