44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
|
#ifndef INDIRECT_REFERENCE_DWA200415_HPP
|
||
|
|
# define INDIRECT_REFERENCE_DWA200415_HPP
|
||
|
|
|
||
|
|
//
|
||
|
|
// Copyright David Abrahams 2004. Use, modification and distribution is
|
||
|
|
// subject to 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)
|
||
|
|
//
|
||
|
|
// typename indirect_reference<P>::type provides the type of *p.
|
||
|
|
//
|
||
|
|
// http://www.boost.org/libs/iterator/doc/pointee.html
|
||
|
|
//
|
||
|
|
|
||
|
|
# include <boost/detail/is_incrementable.hpp>
|
||
|
|
# include <boost/iterator/iterator_traits.hpp>
|
||
|
|
# include <boost/type_traits/remove_cv.hpp>
|
||
|
|
# include <boost/mpl/eval_if.hpp>
|
||
|
|
# include <boost/pointee.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
|
||
|
|
namespace detail
|
||
|
|
{
|
||
|
|
template <class P>
|
||
|
|
struct smart_ptr_reference
|
||
|
|
{
|
||
|
|
typedef typename boost::pointee<P>::type& type;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
template <class P>
|
||
|
|
struct indirect_reference
|
||
|
|
: mpl::eval_if<
|
||
|
|
detail::is_incrementable<P>
|
||
|
|
, iterator_reference<P>
|
||
|
|
, detail::smart_ptr_reference<P>
|
||
|
|
>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#endif // INDIRECT_REFERENCE_DWA200415_HPP
|