source: vendors/XIOS/current/extern/boost/include/boost/range/adaptor/sliced.hpp @ 3408

// 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_SLICED_HPP
#define BOOST_RANGE_ADAPTOR_SLICED_HPP

#include <boost/range/adaptor/argument_fwd.hpp>
#include <boost/range/size_type.hpp>
#include <boost/range/iterator_range.hpp>

namespace boost
{
    namespace adaptors
    {
        struct sliced
        {
            sliced(std::size_t t_, std::size_t u_)
                : t(t_), u(u_) {}
            std::size_t t;
            std::size_t u;
        };

      template< class RandomAccessRange >
      class sliced_range : public boost::iterator_range< BOOST_DEDUCED_TYPENAME range_iterator<RandomAccessRange>::type >
      {
         typedef boost::iterator_range< BOOST_DEDUCED_TYPENAME range_iterator<RandomAccessRange>::type > base_t;
      public:
         template<typename Rng, typename T, typename U>
         sliced_range(Rng& rng, T t, U u)
            : base_t(boost::make_iterator_range(rng, t, u - boost::size(rng)))
         {
         }
      };

      template< class RandomAccessRange >
      inline sliced_range<RandomAccessRange>
      slice( RandomAccessRange& rng, std::size_t t, std::size_t u )
      {
         BOOST_ASSERT( t <= u && "error in slice indices" );
            BOOST_ASSERT( static_cast<std::size_t>(boost::size(rng)) >= u &&
                    "second slice index out of bounds" );

         return sliced_range<RandomAccessRange>(rng, t, u);
      }

      template< class RandomAccessRange >
      inline iterator_range< BOOST_DEDUCED_TYPENAME range_iterator<const RandomAccessRange>::type >
      slice( const RandomAccessRange& rng, std::size_t t, std::size_t u )
      {
          BOOST_ASSERT( t <= u && "error in slice indices" );
          BOOST_ASSERT( static_cast<std::size_t>(boost::size(rng)) >= u &&
                        "second slice index out of bounds" );

            return sliced_range<const RandomAccessRange>(rng, t, u);
      }

      template< class RandomAccessRange >
      inline sliced_range<RandomAccessRange>
      operator|( RandomAccessRange& r, const sliced& f )
      {
         return sliced_range<RandomAccessRange>( r, f.t, f.u );
      }

      template< class RandomAccessRange >
      inline sliced_range<const RandomAccessRange>
      operator|( const RandomAccessRange& r, const sliced& f )
      {
         return sliced_range<const RandomAccessRange>( r, f.t, f.u );
      }

    } // namespace adaptors
} // namespace boost

#endif