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44 lines
1018 B
C++
44 lines
1018 B
C++
#ifndef INDIRECT_REFERENCE_DWA200415_HPP
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#define INDIRECT_REFERENCE_DWA200415_HPP
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//
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// Copyright David Abrahams 2004. Use, modification and distribution is
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// subject to the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// typename indirect_reference<P>::type provides the type of *p.
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//
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// http://www.boost.org/libs/iterator/doc/pointee.html
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//
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#include <boost/detail/is_incrementable.hpp>
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#include <boost/iterator/iterator_traits.hpp>
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#include <boost/pointee.hpp>
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#include <type_traits>
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namespace boost {
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namespace detail {
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template< typename P >
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struct smart_ptr_reference
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{
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using type = typename boost::pointee<P>::type&;
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};
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} // namespace detail
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template< typename P >
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struct indirect_reference :
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std::conditional<
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detail::is_incrementable<P>::value,
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iterator_reference<P>,
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detail::smart_ptr_reference<P>
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>::type
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{
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};
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} // namespace boost
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#endif // INDIRECT_REFERENCE_DWA200415_HPP
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