#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/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 * 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 ) : px( p ) // never throws | |
{ | |
#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 | |
{ | |
BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors | |
this_type(p).swap(*this); | |
} | |
T & operator[](std::ptrdiff_t i) const // never throws | |
{ | |
BOOST_ASSERT( px != 0 ); | |
BOOST_ASSERT( i >= 0 ); | |
return px[i]; | |
} | |
T * get() const // never throws | |
{ | |
return px; | |
} | |
// implicit conversion to "bool" | |
#include <boost/smart_ptr/detail/operator_bool.hpp> | |
void swap(scoped_array & b) // never throws | |
{ | |
T * tmp = b.px; | |
b.px = px; | |
px = 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_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED |