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Add rvalue pointer casts (closes #66)

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Peter Dimov
2019-04-21 00:47:36 +03:00
parent 18974ea2db
commit 8120bb44cb
2 changed files with 86 additions and 7 deletions
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27
include/boost/smart_ptr/intrusive_ptr.hpp
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@@ -297,6 +297,8 @@ template<class T> T * get_pointer(intrusive_ptr<T> const & p) BOOST_SP_NOEXCEPT
return p.get();
}
// pointer casts
template<class T, class U> intrusive_ptr<T> static_pointer_cast(intrusive_ptr<U> const & p)
{
return static_cast<T *>(p.get());
@@ -312,6 +314,31 @@ template<class T, class U> intrusive_ptr<T> dynamic_pointer_cast(intrusive_ptr<U
return dynamic_cast<T *>(p.get());
}
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
template<class T, class U> intrusive_ptr<T> static_pointer_cast( intrusive_ptr<U> && p ) BOOST_SP_NOEXCEPT
{
return intrusive_ptr<T>( static_cast<T*>( p.detach() ), false );
}
template<class T, class U> intrusive_ptr<T> const_pointer_cast( intrusive_ptr<U> && p ) BOOST_SP_NOEXCEPT
{
return intrusive_ptr<T>( const_cast<T*>( p.detach() ), false );
}
template<class T, class U> intrusive_ptr<T> dynamic_pointer_cast( intrusive_ptr<U> && p ) BOOST_SP_NOEXCEPT
{
T * p2 = dynamic_cast<T*>( p.get() );
intrusive_ptr<T> r( p2, false );
if( p2 ) p.detach();
return r;
}
#endif // defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
// operator<<
#if !defined(BOOST_NO_IOSTREAM)