Chris@16: // Copyright David Abrahams 2002.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: #ifndef DESTROY_DWA2002221_HPP
Chris@16: # define DESTROY_DWA2002221_HPP
Chris@16: 
Chris@16: # include <boost/type_traits/is_array.hpp>
Chris@16: # include <boost/detail/workaround.hpp>
Chris@16: # if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
Chris@16: #  include <boost/type_traits/is_enum.hpp>
Chris@16: # endif 
Chris@16: namespace boost { namespace python { namespace detail { 
Chris@16: 
Chris@16: template <
Chris@16:     bool array
Chris@16: # if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
Chris@16:   , bool enum_  // vc7 has a problem destroying enums
Chris@16: # endif 
Chris@16:     > struct value_destroyer;
Chris@16:     
Chris@16: template <>
Chris@16: struct value_destroyer<
Chris@16:     false
Chris@16: # if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
Chris@16:   , false
Chris@16: # endif 
Chris@16:     >
Chris@16: {
Chris@16:     template <class T>
Chris@16:     static void execute(T const volatile* p)
Chris@16:     {
Chris@16:         p->~T();
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: template <>
Chris@16: struct value_destroyer<
Chris@16:     true
Chris@16: # if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
Chris@16:   , false
Chris@16: # endif 
Chris@16:     >
Chris@16: {
Chris@16:     template <class A, class T>
Chris@16:     static void execute(A*, T const volatile* const first)
Chris@16:     {
Chris@16:         for (T const volatile* p = first; p != first + sizeof(A)/sizeof(T); ++p)
Chris@16:         {
Chris@16:             value_destroyer<
Chris@16:                 boost::is_array<T>::value
Chris@16: # if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
Chris@16:               , boost::is_enum<T>::value
Chris@16: # endif 
Chris@16:             >::execute(p);
Chris@16:         }
Chris@16:     }
Chris@16:     
Chris@16:     template <class T>
Chris@16:     static void execute(T const volatile* p)
Chris@16:     {
Chris@16:         execute(p, *p);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: # if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
Chris@16: template <>
Chris@16: struct value_destroyer<true,true>
Chris@16: {
Chris@16:     template <class T>
Chris@16:     static void execute(T const volatile*)
Chris@16:     {
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: template <>
Chris@16: struct value_destroyer<false,true>
Chris@16: {
Chris@16:     template <class T>
Chris@16:     static void execute(T const volatile*)
Chris@16:     {
Chris@16:     }
Chris@16: };
Chris@16: # endif 
Chris@16: template <class T>
Chris@16: inline void destroy_referent_impl(void* p, T& (*)())
Chris@16: {
Chris@16:     // note: cv-qualification needed for MSVC6
Chris@16:     // must come *before* T for metrowerks
Chris@16:     value_destroyer<
Chris@16:          (boost::is_array<T>::value)
Chris@16: # if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
Chris@16:        , (boost::is_enum<T>::value)
Chris@16: # endif 
Chris@16:     >::execute((const volatile T*)p);
Chris@16: }
Chris@16: 
Chris@16: template <class T>
Chris@16: inline void destroy_referent(void* p, T(*)() = 0)
Chris@16: {
Chris@16:     destroy_referent_impl(p, (T(*)())0);
Chris@16: }
Chris@16: 
Chris@16: }}} // namespace boost::python::detail
Chris@16: 
Chris@16: #endif // DESTROY_DWA2002221_HPP