#ifndef BOOST_SCOPED_PTR_HPP_INCLUDED

 #define BOOST_SCOPED_PTR_HPP_INCLUDED

 //  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.

 //  Copyright (c) 2001, 2002 Peter Dimov

 //

 //  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)

 //

 //  http://www.boost.org/libs/smart_ptr/scoped_ptr.htm

 //

 #include <boost/assert.hpp>

 #include <boost/checked_delete.hpp>

 #include <boost/detail/workaround.hpp>

 #ifndef BOOST_NO_AUTO_PTR

 # include <memory>          // for std::auto_ptr

 #endif

 namespace boost

 {

 // Debug hooks

 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)

 void sp_scalar_constructor_hook(void * p);

 void sp_scalar_destructor_hook(void * p);

 #endif

 //  scoped_ptr mimics a built-in pointer except that it guarantees deletion

 //  of the object pointed to, either on destruction of the scoped_ptr or via

 //  an explicit reset(). scoped_ptr is a simple solution for simple needs;

 //  use shared_ptr or std::auto_ptr if your needs are more complex.

 template<class T> class scoped_ptr // noncopyable

 {

 private:

     T * ptr;

     scoped_ptr(scoped_ptr const &);

     scoped_ptr & operator=(scoped_ptr const &);

     typedef scoped_ptr<T> this_type;

 public:

     typedef T element_type;

     explicit scoped_ptr(T * p = 0): ptr(p) // never throws

     {

 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)

         boost::sp_scalar_constructor_hook(ptr);

 #endif

     }

 #ifndef BOOST_NO_AUTO_PTR

     explicit scoped_ptr(std::auto_ptr<T> p): ptr(p.release()) // never throws

     {

 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)

         boost::sp_scalar_constructor_hook(ptr);

 #endif

     }

 #endif

     ~scoped_ptr() // never throws

     {

 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)

         boost::sp_scalar_destructor_hook(ptr);

 #endif

         boost::checked_delete(ptr);

     }

     void reset(T * p = 0) // never throws

     {

         BOOST_ASSERT(p == 0 || p != ptr); // catch self-reset errors

         this_type(p).swap(*this);

     }

     T & operator*() const // never throws

     {

         BOOST_ASSERT(ptr != 0);

         return *ptr;

     }

     T * operator->() const // never throws

     {

         BOOST_ASSERT(ptr != 0);

         return ptr;

     }

     T * get() const // never throws

     {

         return ptr;

     }

     // implicit conversion to "bool"

 #if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)

     operator bool () const

     {

         return ptr != 0;

     }

 #elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))

     typedef T * (this_type::*unspecified_bool_type)() const;

     operator unspecified_bool_type() const // never throws

     {

         return ptr == 0? 0: &this_type::get;

     }

 #else 

     typedef T * this_type::*unspecified_bool_type;

     operator unspecified_bool_type() const // never throws

     {

         return ptr == 0? 0: &this_type::ptr;

     }

 #endif

     bool operator! () const // never throws

     {

         return ptr == 0;

     }

     void swap(scoped_ptr & b) // never throws

     {

         T * tmp = b.ptr;

         b.ptr = ptr;

         ptr = tmp;

     }

 };

 template<class T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) // never throws

 {

     a.swap(b);

 }

 // get_pointer(p) is a generic way to say p.get()

 template<class T> inline T * get_pointer(scoped_ptr<T> const & p)

 {

     return p.get();

 }

 } // namespace boost

 #endif // #ifndef BOOST_SCOPED_PTR_HPP_INCLUDED