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Merge pull request #29 from cdglove/rvalue_casts
Add rvalue versions of static_pointer_cast, const_pointer_cast, dynamic_pointer_cast, reinterpret_pointer_cast.
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// | ||
// shared_ptr_rv_pointer_cast_test.cpp | ||
// | ||
// Copyright (c) 2016 Chris Glover | ||
// | ||
// 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 | ||
// | ||
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#include <boost/shared_ptr.hpp> | ||
#include <boost/detail/lightweight_test.hpp> | ||
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#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) | ||
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struct X | ||
{}; | ||
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struct Y: public X | ||
{}; | ||
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struct U | ||
{ | ||
virtual ~U() {} | ||
}; | ||
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struct V: public U | ||
{}; | ||
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struct W : public U | ||
{}; | ||
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int main() | ||
{ | ||
{ | ||
boost::shared_ptr<X> px(new Y); | ||
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boost::shared_ptr<Y> py1 = boost::static_pointer_cast<Y>(px); | ||
boost::shared_ptr<Y> py2 = boost::static_pointer_cast<Y>(std::move(px)); | ||
BOOST_TEST(!px); | ||
BOOST_TEST(px.use_count() == 0); | ||
BOOST_TEST(py1.get() == py2.get()); | ||
BOOST_TEST(!(py1 < py2 || py2 < py1)); | ||
BOOST_TEST(py1.use_count() == 2); | ||
BOOST_TEST(py2.use_count() == 2); | ||
} | ||
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{ | ||
boost::shared_ptr<int const volatile> px(new int); | ||
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boost::shared_ptr<int> px2 = boost::const_pointer_cast<int>(px); | ||
boost::shared_ptr<int> px3 = boost::const_pointer_cast<int>(std::move(px)); | ||
BOOST_TEST(!px); | ||
BOOST_TEST(px.use_count() == 0); | ||
BOOST_TEST(px2.get() == px3.get()); | ||
BOOST_TEST(!(px2 < px3 || px2 < px3)); | ||
BOOST_TEST(px2.use_count() == 2); | ||
BOOST_TEST(px3.use_count() == 2); | ||
} | ||
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{ | ||
boost::shared_ptr<char> pv(reinterpret_cast<char*>(new Y)); | ||
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boost::shared_ptr<Y> py1 = boost::reinterpret_pointer_cast<Y>(pv); | ||
boost::shared_ptr<Y> py2 = boost::reinterpret_pointer_cast<Y>(std::move(pv)); | ||
BOOST_TEST(!pv); | ||
BOOST_TEST(pv.use_count() == 0); | ||
BOOST_TEST(py1.get() == py2.get()); | ||
BOOST_TEST(!(py1 < py2 || py2 < py1)); | ||
BOOST_TEST(py1.use_count() == 2); | ||
BOOST_TEST(py2.use_count() == 2); | ||
} | ||
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#if !defined( BOOST_NO_RTTI ) | ||
{ | ||
boost::shared_ptr<U> pu(new V); | ||
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boost::shared_ptr<V> pv1 = boost::dynamic_pointer_cast<V>(pu); | ||
boost::shared_ptr<V> pv2 = boost::dynamic_pointer_cast<V>(std::move(pu)); | ||
BOOST_TEST(!pu); | ||
BOOST_TEST(pu.use_count() == 0); | ||
BOOST_TEST(pv1.get() == pv2.get()); | ||
BOOST_TEST(!(pv1 < pv2 || pv2 < pv1)); | ||
BOOST_TEST(pv1.use_count() == 2); | ||
BOOST_TEST(pv2.use_count() == 2); | ||
} | ||
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{ | ||
boost::shared_ptr<U> pu(new V); | ||
boost::shared_ptr<W> pw = boost::dynamic_pointer_cast<W>(std::move(pu)); | ||
BOOST_TEST(!pw); | ||
BOOST_TEST(pu); | ||
} | ||
#endif // !defined( BOOST_NO_RTTI ) | ||
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return boost::report_errors(); | ||
} | ||
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#else // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) | ||
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int main() | ||
{ | ||
return 0; | ||
} | ||
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#endif // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |