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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/type_traits/is_array.hpp>
# include <boost/detail/workaround.hpp>
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
# include <boost/type_traits/is_enum.hpp>
# endif
namespace boost { namespace python { namespace detail {
template <
bool array
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
, bool enum_ // vc7 has a problem destroying enums
# endif
> struct value_destroyer;
template <>
struct value_destroyer<
false
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
, false
# endif
>
{
template <class T>
static void execute(T const volatile* p)
{
p->~T();
}
};
template <>
struct value_destroyer<
true
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
, false
# endif
>
{
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<
boost::is_array<T>::value
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
, boost::is_enum<T>::value
# endif
>::execute(p);
}
}
template <class T>
static void execute(T const volatile* p)
{
execute(p, *p);
}
};
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
template <>
struct value_destroyer<true,true>
{
template <class T>
static void execute(T const volatile*)
{
}
};
template <>
struct value_destroyer<false,true>
{
template <class T>
static void execute(T const volatile*)
{
}
};
# endif
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<
(boost::is_array<T>::value)
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
, (boost::is_enum<T>::value)
# endif
>::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
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