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#ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
#define BOOST_SMART_PTR_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)
//
// See http://www.boost.org/libs/smart_ptr/ for documentation.
#include <boost/smart_ptr/detail/sp_noexcept.hpp>
#include <boost/smart_ptr/detail/deprecated_macros.hpp>
#include <boost/core/checked_delete.hpp>
#include <boost/assert.hpp>
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
#include <cstddef> // for std::ptrdiff_t
namespace boost
{
// 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 * px;
scoped_array(scoped_array const &);
scoped_array & operator=(scoped_array const &);
typedef scoped_array<T> this_type;
void operator==( scoped_array const& ) const;
void operator!=( scoped_array const& ) const;
public:
typedef T element_type;
explicit scoped_array( T * p = 0 ) noexcept : px( p )
{
}
~scoped_array() noexcept
{
boost::checked_array_delete( px );
}
void reset(T * p = 0) BOOST_SP_NOEXCEPT_WITH_ASSERT
{
BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
this_type(p).swap(*this);
}
T & operator[](std::ptrdiff_t i) const BOOST_SP_NOEXCEPT_WITH_ASSERT
{
BOOST_ASSERT( px != 0 );
BOOST_ASSERT( i >= 0 );
return px[i];
}
T * get() const noexcept
{
return px;
}
explicit operator bool () const noexcept
{
return px != 0;
}
void swap(scoped_array & b) noexcept
{
T * tmp = b.px;
b.px = px;
px = tmp;
}
};
template<class T> inline bool operator==( scoped_array<T> const & p, std::nullptr_t ) noexcept
{
return p.get() == 0;
}
template<class T> inline bool operator==( std::nullptr_t, scoped_array<T> const & p ) noexcept
{
return p.get() == 0;
}
template<class T> inline bool operator!=( scoped_array<T> const & p, std::nullptr_t ) noexcept
{
return p.get() != 0;
}
template<class T> inline bool operator!=( std::nullptr_t, scoped_array<T> const & p ) noexcept
{
return p.get() != 0;
}
template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) noexcept
{
a.swap(b);
}
} // namespace boost
#endif // #ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
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