#ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED

 #define BOOST_SCOPED_ARRAY_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_array.htm

 //

 #include <boost/assert.hpp>

 #include <boost/checked_delete.hpp>

 #include <boost/config.hpp>   // in case ptrdiff_t not in std

 #include <boost/detail/workaround.hpp>

 #include <cstddef>            // for std::ptrdiff_t

 namespace boost

 {

 // Debug hooks

 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)

 void sp_array_constructor_hook(void * p);

 void sp_array_destructor_hook(void * p);

 #endif

 //  scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to

 //  is guaranteed, either on destruction of the scoped_array or via an explicit

 //  reset(). Use shared_array or std::vector if your needs are more complex.

 template<class T> class scoped_array // noncopyable

 {

 private:

     T * ptr;

     scoped_array(scoped_array const &);

     scoped_array & operator=(scoped_array const &);

     typedef scoped_array<T> this_type;

 public:

     typedef T element_type;

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

     {

 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)

         boost::sp_array_constructor_hook(ptr);

 #endif

     }

     ~scoped_array() // never throws

     {

 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)

         boost::sp_array_destructor_hook(ptr);

 #endif

         boost::checked_array_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[](std::ptrdiff_t i) const // never throws

     {

         BOOST_ASSERT(ptr != 0);

         BOOST_ASSERT(i >= 0);

         return ptr[i];

     }

     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_array & b) // never throws

     {

         T * tmp = b.ptr;

         b.ptr = ptr;

         ptr = tmp;

     }

 };

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

 {

     a.swap(b);

 }

 } // namespace boost

 #endif  // #ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED