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// Boost.Range library
//
// Copyright Thorsten Ottosen, Neil Groves 2006 - 2008. 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)
//
// For more information, see http://www.boost.org/libs/range/
//
#ifndef BOOST_RANGE_ADAPTOR_INDIRECTED_HPP
#define BOOST_RANGE_ADAPTOR_INDIRECTED_HPP
#include <boost/range/iterator_range.hpp>
#include <boost/range/concepts.hpp>
#include <boost/iterator/indirect_iterator.hpp>
namespace boost
{
namespace range_detail
{
template< class R >
struct indirected_range :
public boost::iterator_range<
boost::indirect_iterator<
BOOST_DEDUCED_TYPENAME range_iterator<R>::type
>
>
{
private:
typedef boost::iterator_range<
boost::indirect_iterator<
BOOST_DEDUCED_TYPENAME range_iterator<R>::type
>
>
base;
public:
explicit indirected_range( R& r )
: base( r )
{ }
};
struct indirect_forwarder {};
template< class SinglePassRange >
inline indirected_range<SinglePassRange>
operator|( SinglePassRange& r, indirect_forwarder )
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<SinglePassRange>));
return indirected_range<SinglePassRange>( r );
}
template< class SinglePassRange >
inline indirected_range<const SinglePassRange>
operator|( const SinglePassRange& r, indirect_forwarder )
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange>));
return indirected_range<const SinglePassRange>( r );
}
} // 'range_detail'
using range_detail::indirected_range;
namespace adaptors
{
namespace
{
const range_detail::indirect_forwarder indirected =
range_detail::indirect_forwarder();
}
template<class SinglePassRange>
inline indirected_range<SinglePassRange>
indirect(SinglePassRange& rng)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<SinglePassRange>));
return indirected_range<SinglePassRange>(rng);
}
template<class SinglePassRange>
inline indirected_range<const SinglePassRange>
indirect(const SinglePassRange& rng)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange>));
return indirected_range<const SinglePassRange>(rng);
}
} // 'adaptors'
}
#endif
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