115 lines
2.0 KiB
C++
115 lines
2.0 KiB
C++
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#ifndef OTHER_DWA20020601_HPP
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# define OTHER_DWA20020601_HPP
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# include <boost/python/detail/prefix.hpp>
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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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# if _MSC_VER+0 >= 1020
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# pragma once
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# endif
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# include <boost/config.hpp>
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namespace boost { namespace python {
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template<class T> struct other
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{
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typedef T type;
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};
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# ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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namespace detail
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{
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template<typename T>
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class is_other
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{
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public:
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BOOST_STATIC_CONSTANT(bool, value = false);
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};
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template<typename T>
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class is_other<other<T> >
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{
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public:
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BOOST_STATIC_CONSTANT(bool, value = true);
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};
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template<typename T>
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class unwrap_other
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{
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public:
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typedef T type;
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};
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template<typename T>
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class unwrap_other<other<T> >
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{
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public:
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typedef T type;
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};
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}
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# else // no partial specialization
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}} // namespace boost::python
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#include <boost/type.hpp>
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namespace boost { namespace python {
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namespace detail
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{
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typedef char (&yes_other_t)[1];
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typedef char (&no_other_t)[2];
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no_other_t is_other_test(...);
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template<typename T>
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yes_other_t is_other_test(type< other<T> >);
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template<bool wrapped>
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struct other_unwrapper
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{
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template <class T>
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struct apply
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{
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typedef T type;
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};
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};
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template<>
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struct other_unwrapper<true>
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{
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template <class T>
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struct apply
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{
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typedef typename T::type type;
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};
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};
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template<typename T>
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class is_other
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{
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public:
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BOOST_STATIC_CONSTANT(
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bool, value = (
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sizeof(detail::is_other_test(type<T>()))
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== sizeof(detail::yes_other_t)));
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};
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template <typename T>
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class unwrap_other
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: public detail::other_unwrapper<
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is_other<T>::value
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>::template apply<T>
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{};
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}
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# endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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}} // namespace boost::python
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#endif // #ifndef OTHER_DWA20020601_HPP
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