Chris@16: #ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
Chris@16: #define BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
Chris@16: 
Chris@16: //  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
Chris@16: //  Copyright (c) 2001, 2002 Peter Dimov
Chris@16: //
Chris@16: //  Distributed under the Boost Software License, Version 1.0. (See
Chris@16: //  accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: //  http://www.boost.org/libs/smart_ptr/scoped_array.htm
Chris@16: //
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: #include <boost/assert.hpp>
Chris@16: #include <boost/checked_delete.hpp>
Chris@16: #include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
Chris@16: 
Chris@16: #include <boost/detail/workaround.hpp>
Chris@16: 
Chris@16: #include <cstddef>            // for std::ptrdiff_t
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: 
Chris@16: // Debug hooks
Chris@16: 
Chris@16: #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
Chris@16: 
Chris@16: void sp_array_constructor_hook(void * p);
Chris@16: void sp_array_destructor_hook(void * p);
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: //  scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
Chris@16: //  is guaranteed, either on destruction of the scoped_array or via an explicit
Chris@16: //  reset(). Use shared_array or std::vector if your needs are more complex.
Chris@16: 
Chris@16: template<class T> class scoped_array // noncopyable
Chris@16: {
Chris@16: private:
Chris@16: 
Chris@16:     T * px;
Chris@16: 
Chris@16:     scoped_array(scoped_array const &);
Chris@16:     scoped_array & operator=(scoped_array const &);
Chris@16: 
Chris@16:     typedef scoped_array<T> this_type;
Chris@16: 
Chris@16:     void operator==( scoped_array const& ) const;
Chris@16:     void operator!=( scoped_array const& ) const;
Chris@16: 
Chris@16: public:
Chris@16: 
Chris@16:     typedef T element_type;
Chris@16: 
Chris@16:     explicit scoped_array( T * p = 0 ) BOOST_NOEXCEPT : px( p )
Chris@16:     {
Chris@16: #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
Chris@16:         boost::sp_array_constructor_hook( px );
Chris@16: #endif
Chris@16:     }
Chris@16: 
Chris@16:     ~scoped_array() // never throws
Chris@16:     {
Chris@16: #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
Chris@16:         boost::sp_array_destructor_hook( px );
Chris@16: #endif
Chris@16:         boost::checked_array_delete( px );
Chris@16:     }
Chris@16: 
Chris@16:     void reset(T * p = 0) // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
Chris@16:     {
Chris@16:         BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
Chris@16:         this_type(p).swap(*this);
Chris@16:     }
Chris@16: 
Chris@16:     T & operator[](std::ptrdiff_t i) const // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
Chris@16:     {
Chris@16:         BOOST_ASSERT( px != 0 );
Chris@16:         BOOST_ASSERT( i >= 0 );
Chris@16:         return px[i];
Chris@16:     }
Chris@16: 
Chris@16:     T * get() const BOOST_NOEXCEPT
Chris@16:     {
Chris@16:         return px;
Chris@16:     }
Chris@16: 
Chris@16: // implicit conversion to "bool"
Chris@16: #include <boost/smart_ptr/detail/operator_bool.hpp>
Chris@16: 
Chris@16:     void swap(scoped_array & b) BOOST_NOEXCEPT
Chris@16:     {
Chris@16:         T * tmp = b.px;
Chris@16:         b.px = px;
Chris@16:         px = tmp;
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: #if !defined( BOOST_NO_CXX11_NULLPTR )
Chris@16: 
Chris@16: template<class T> inline bool operator==( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
Chris@16: {
Chris@16:     return p.get() == 0;
Chris@16: }
Chris@16: 
Chris@16: template<class T> inline bool operator==( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_NOEXCEPT
Chris@16: {
Chris@16:     return p.get() == 0;
Chris@16: }
Chris@16: 
Chris@16: template<class T> inline bool operator!=( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
Chris@16: {
Chris@16:     return p.get() != 0;
Chris@16: }
Chris@16: 
Chris@16: template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_NOEXCEPT
Chris@16: {
Chris@16:     return p.get() != 0;
Chris@16: }
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) BOOST_NOEXCEPT
Chris@16: {
Chris@16:     a.swap(b);
Chris@16: }
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif  // #ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED