174 lines
3.2 KiB
C++
174 lines
3.2 KiB
C++
#include <boost/config.hpp>
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#if defined(BOOST_MSVC)
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#pragma warning(disable: 4786) // identifier truncated in debug info
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#pragma warning(disable: 4710) // function not inlined
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#pragma warning(disable: 4711) // function selected for automatic inline expansion
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#pragma warning(disable: 4514) // unreferenced inline removed
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#endif
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#if defined(__GNUC__) && __GNUC__ > 4
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# pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor"
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#endif
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//
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// shared_from_this_test.cpp
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//
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// Copyright (c) 2002, 2003 Peter Dimov
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//
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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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#include <boost/enable_shared_from_this.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/detail/lightweight_test.hpp>
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//
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class X
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{
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public:
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virtual void f() = 0;
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protected:
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~X() {}
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};
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class Y
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{
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public:
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virtual boost::shared_ptr<X> getX() = 0;
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protected:
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~Y() {}
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};
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boost::shared_ptr<Y> createY();
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void test()
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{
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boost::shared_ptr<Y> py = createY();
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BOOST_TEST(py.get() != 0);
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BOOST_TEST(py.use_count() == 1);
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try
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{
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boost::shared_ptr<X> px = py->getX();
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BOOST_TEST(px.get() != 0);
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BOOST_TEST(py.use_count() == 2);
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px->f();
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#if !defined( BOOST_NO_RTTI )
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boost::shared_ptr<Y> py2 = boost::dynamic_pointer_cast<Y>(px);
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BOOST_TEST(py.get() == py2.get());
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BOOST_TEST(!(py < py2 || py2 < py));
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BOOST_TEST(py.use_count() == 3);
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#endif
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}
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catch( boost::bad_weak_ptr const& )
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{
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BOOST_ERROR( "py->getX() failed" );
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}
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}
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void test2();
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void test3();
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int main()
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{
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test();
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test2();
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test3();
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return boost::report_errors();
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}
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// virtual inheritance to stress the implementation
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// (prevents Y* -> impl*, enable_shared_from_this<impl>* -> impl* casts)
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class impl: public X, public virtual Y, public virtual boost::enable_shared_from_this<impl>
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{
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public:
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virtual void f()
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{
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}
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virtual boost::shared_ptr<X> getX()
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{
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boost::shared_ptr<impl> pi = shared_from_this();
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BOOST_TEST(pi.get() == this);
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return pi;
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}
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};
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// intermediate impl2 to stress the implementation
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class impl2: public impl
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{
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};
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boost::shared_ptr<Y> createY()
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{
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boost::shared_ptr<Y> pi(new impl2);
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return pi;
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}
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void test2()
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{
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boost::shared_ptr<Y> pi(static_cast<impl2*>(0));
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}
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//
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struct V: public boost::enable_shared_from_this<V>
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{
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};
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void test3()
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{
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boost::shared_ptr<V> p(new V);
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try
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{
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boost::shared_ptr<V> q = p->shared_from_this();
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BOOST_TEST(p == q);
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BOOST_TEST(!(p < q) && !(q < p));
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}
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catch( boost::bad_weak_ptr const & )
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{
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BOOST_ERROR( "p->shared_from_this() failed" );
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}
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V v2(*p);
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try
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{
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boost::shared_ptr<V> r = v2.shared_from_this();
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BOOST_ERROR("v2.shared_from_this() failed to throw");
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}
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catch( boost::bad_weak_ptr const & )
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{
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}
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try
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{
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*p = V();
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boost::shared_ptr<V> r = p->shared_from_this();
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BOOST_TEST(p == r);
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BOOST_TEST(!(p < r) && !(r < p));
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}
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catch( boost::bad_weak_ptr const & )
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{
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BOOST_ERROR("p->shared_from_this() threw bad_weak_ptr after *p = V()");
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}
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}
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