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106 lines
2.3 KiB
106 lines
2.3 KiB
// 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(); |
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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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