| author | sl |
| Tue, 10 Jun 2014 14:32:02 +0200 | |
| changeset 1 | 260cb5ec6c19 |
| permissions | -rw-r--r-- |
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#ifndef PTR_DWA20020601_HPP |
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# define PTR_DWA20020601_HPP |
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|
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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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// |
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// Based on boost/ref.hpp, thus: |
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// Copyright (C) 1999, 2000 Jaakko Järvi (jaakko.jarvi@cs.utu.fi) |
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// Copyright (C) 2001 Peter Dimov |
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|
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# if _MSC_VER+0 >= 1020 |
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# pragma once |
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# endif |
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|
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# include <boost/config.hpp> |
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# include <boost/mpl/bool.hpp> |
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|
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namespace boost { namespace python {
|
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|
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template<class Ptr> class pointer_wrapper |
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{
|
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public: |
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typedef Ptr type; |
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|
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explicit pointer_wrapper(Ptr x): p_(x) {}
|
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operator Ptr() const { return p_; }
|
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Ptr get() const { return p_; }
|
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private: |
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Ptr p_; |
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}; |
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|
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template<class T> |
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inline pointer_wrapper<T> ptr(T t) |
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{
|
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return pointer_wrapper<T>(t); |
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} |
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|
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# ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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template<typename T> |
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class is_pointer_wrapper |
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: public mpl::false_ |
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{
|
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}; |
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|
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template<typename T> |
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class is_pointer_wrapper<pointer_wrapper<T> > |
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: public mpl::true_ |
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{
|
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}; |
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|
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template<typename T> |
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class unwrap_pointer |
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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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template<typename T> |
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class unwrap_pointer<pointer_wrapper<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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# else // no partial specialization |
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|
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}} // namespace boost::python |
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|
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#include <boost/type.hpp> |
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|
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namespace boost { namespace python {
|
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|
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namespace detail |
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{
|
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typedef char (&yes_pointer_wrapper_t)[1]; |
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typedef char (&no_pointer_wrapper_t)[2]; |
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|
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no_pointer_wrapper_t is_pointer_wrapper_test(...); |
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|
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template<typename T> |
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yes_pointer_wrapper_t is_pointer_wrapper_test(boost::type< pointer_wrapper<T> >); |
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|
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template<bool wrapped> |
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struct pointer_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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|
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template<> |
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struct pointer_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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} |
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|
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template<typename T> |
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class is_pointer_wrapper |
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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_pointer_wrapper_test(boost::type<T>())) |
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== sizeof(detail::yes_pointer_wrapper_t))); |
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typedef mpl::bool_<value> type; |
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}; |
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|
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template <typename T> |
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class unwrap_pointer |
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: public detail::pointer_unwrapper< |
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is_pointer_wrapper<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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|
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}} // namespace boost::python |
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|
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#endif // #ifndef PTR_DWA20020601_HPP |