133 lines
3.4 KiB
C++
133 lines
3.4 KiB
C++
#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)
|
|
//
|
|
// http://www.boost.org/libs/smart_ptr/scoped_array.htm
|
|
//
|
|
|
|
#include <boost/config.hpp>
|
|
#include <boost/assert.hpp>
|
|
#include <boost/checked_delete.hpp>
|
|
#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
|
|
|
|
#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 * 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 ) BOOST_NOEXCEPT : px( p )
|
|
{
|
|
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
|
boost::sp_array_constructor_hook( px );
|
|
#endif
|
|
}
|
|
|
|
~scoped_array() // never throws
|
|
{
|
|
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
|
boost::sp_array_destructor_hook( px );
|
|
#endif
|
|
boost::checked_array_delete( px );
|
|
}
|
|
|
|
void reset(T * p = 0) // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
|
|
{
|
|
BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
|
|
this_type(p).swap(*this);
|
|
}
|
|
|
|
T & operator[](std::ptrdiff_t i) const // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
|
|
{
|
|
BOOST_ASSERT( px != 0 );
|
|
BOOST_ASSERT( i >= 0 );
|
|
return px[i];
|
|
}
|
|
|
|
T * get() const BOOST_NOEXCEPT
|
|
{
|
|
return px;
|
|
}
|
|
|
|
// implicit conversion to "bool"
|
|
#include <boost/smart_ptr/detail/operator_bool.hpp>
|
|
|
|
void swap(scoped_array & b) BOOST_NOEXCEPT
|
|
{
|
|
T * tmp = b.px;
|
|
b.px = px;
|
|
px = tmp;
|
|
}
|
|
};
|
|
|
|
#if !defined( BOOST_NO_CXX11_NULLPTR )
|
|
|
|
template<class T> inline bool operator==( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() == 0;
|
|
}
|
|
|
|
template<class T> inline bool operator==( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() == 0;
|
|
}
|
|
|
|
template<class T> inline bool operator!=( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() != 0;
|
|
}
|
|
|
|
template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() != 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) BOOST_NOEXCEPT
|
|
{
|
|
a.swap(b);
|
|
}
|
|
|
|
} // namespace boost
|
|
|
|
#endif // #ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
|