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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2011-2013. 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)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#include <boost/intrusive/detail/mpl.hpp>
#include <boost/static_assert.hpp>
#include <boost/intrusive/pointer_traits.hpp>
template<class T>
class CompleteSmartPtr
{
template <class U>
friend class CompleteSmartPtr;
public:
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template <class U> using rebind = CompleteSmartPtr<U>;
#else
template <class U> struct rebind
{ typedef CompleteSmartPtr<U> other; };
#endif
typedef char difference_type;
typedef T element_type;
CompleteSmartPtr()
: ptr_(0)
{}
explicit CompleteSmartPtr(T &p)
: ptr_(&p)
{}
CompleteSmartPtr(const CompleteSmartPtr &c)
{ this->ptr_ = c.ptr_; }
CompleteSmartPtr & operator=(const CompleteSmartPtr &c)
{ this->ptr_ = c.ptr_; }
static CompleteSmartPtr pointer_to(T &r)
{ return CompleteSmartPtr(r); }
T * operator->() const
{ return ptr_; }
T & operator *() const
{ return *ptr_; }
template<class U>
static CompleteSmartPtr static_cast_from(const CompleteSmartPtr<U> &uptr)
{ return CompleteSmartPtr(*static_cast<element_type*>(uptr.ptr_)); }
template<class U>
static CompleteSmartPtr const_cast_from(const CompleteSmartPtr<U> &uptr)
{ return CompleteSmartPtr(*const_cast<element_type*>(uptr.ptr_)); }
template<class U>
static CompleteSmartPtr dynamic_cast_from(const CompleteSmartPtr<U> &uptr)
{ return CompleteSmartPtr(*dynamic_cast<element_type*>(uptr.ptr_)); }
friend bool operator ==(const CompleteSmartPtr &l, const CompleteSmartPtr &r)
{ return l.ptr_ == r.ptr_; }
friend bool operator !=(const CompleteSmartPtr &l, const CompleteSmartPtr &r)
{ return l.ptr_ != r.ptr_; }
private:
T *ptr_;
};
template<class T>
class SimpleSmartPtr
{
public:
SimpleSmartPtr()
: ptr_(0)
{}
explicit SimpleSmartPtr(T *p)
: ptr_(p)
{}
SimpleSmartPtr(const SimpleSmartPtr &c)
{ this->ptr_ = c.ptr_; }
SimpleSmartPtr & operator=(const SimpleSmartPtr &c)
{ this->ptr_ = c.ptr_; }
friend bool operator ==(const SimpleSmartPtr &l, const SimpleSmartPtr &r)
{ return l.ptr_ == r.ptr_; }
friend bool operator !=(const SimpleSmartPtr &l, const SimpleSmartPtr &r)
{ return l.ptr_ != r.ptr_; }
T* operator->() const
{ return ptr_; }
T & operator *() const
{ return *ptr_; }
private:
T *ptr_;
};
class B{ public: virtual ~B(){} };
class D : public B {};
class DD : public virtual B {};
int main()
{
int dummy;
//Raw pointer
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
<int*>::element_type, int>::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
<int*>::pointer, int*>::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
<int*>::difference_type, std::ptrdiff_t>::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
<int*>::rebind_pointer<double>::type
, double*>::value ));
if(boost::intrusive::pointer_traits<int*>::pointer_to(dummy) != &dummy){
return 1;
}
if(boost::intrusive::pointer_traits<D*>::static_cast_from((B*)0)){
return 1;
}
if(boost::intrusive::pointer_traits<D*>::const_cast_from((const D*)0)){
return 1;
}
if(boost::intrusive::pointer_traits<DD*>::dynamic_cast_from((B*)0)){
return 1;
}
//Complete smart pointer
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< CompleteSmartPtr<int> >::element_type, int>::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< CompleteSmartPtr<int> >::pointer, CompleteSmartPtr<int> >::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< CompleteSmartPtr<int> >::difference_type, char>::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< CompleteSmartPtr<int> >::rebind_pointer<double>::type
, CompleteSmartPtr<double> >::value ));
if(boost::intrusive::pointer_traits< CompleteSmartPtr<int> >
::pointer_to(dummy) != CompleteSmartPtr<int>(dummy)){
return 1;
}
if(boost::intrusive::pointer_traits< CompleteSmartPtr<D> >::
static_cast_from(CompleteSmartPtr<B>()) != CompleteSmartPtr<D>()){
return 1;
}
if(boost::intrusive::pointer_traits< CompleteSmartPtr<D> >::
const_cast_from(CompleteSmartPtr<const D>()) != CompleteSmartPtr<D>()){
return 1;
}
if(boost::intrusive::pointer_traits< CompleteSmartPtr<DD> >::
dynamic_cast_from(CompleteSmartPtr<B>()) != CompleteSmartPtr<DD>()){
return 1;
}
//Simple smart pointer
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< SimpleSmartPtr<int> >::element_type, int>::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< SimpleSmartPtr<int> >::pointer, SimpleSmartPtr<int> >::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< SimpleSmartPtr<int> >::difference_type, std::ptrdiff_t>::value ));
BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<boost::intrusive::pointer_traits
< SimpleSmartPtr<int> >::rebind_pointer<double>::type
, SimpleSmartPtr<double> >::value ));
if(boost::intrusive::pointer_traits< SimpleSmartPtr<int> >
::pointer_to(dummy) != SimpleSmartPtr<int>(&dummy)){
return 1;
}
if(boost::intrusive::pointer_traits< SimpleSmartPtr<D> >::
static_cast_from(SimpleSmartPtr<B>()) != SimpleSmartPtr<D>()){
return 1;
}
if(boost::intrusive::pointer_traits< SimpleSmartPtr<D> >::
const_cast_from(SimpleSmartPtr<const D>()) != SimpleSmartPtr<D>()){
return 1;
}
if(boost::intrusive::pointer_traits< SimpleSmartPtr<DD> >::
dynamic_cast_from(SimpleSmartPtr<B>()) != SimpleSmartPtr<DD>()){
return 1;
}
return 0;
}
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