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