range.h

// Description: Iterator ranges
// Documentation: iterator.txt

#ifndef PASTELSYS_RANGE_H
#define PASTELSYS_RANGE_H

#include "pastel/sys/mytypes.h"

#include <boost/range/iterator_range.hpp>
#include <boost/range/metafunctions.hpp>

namespace Pastel
{

    template <typename Iterator>
    boost::iterator_range<Iterator> range(
        const Iterator& begin,
        integer size)
    {
        //ENSURE_OP(size, >=, 0);
        return boost::make_iterator_range(
            begin, std::next(begin, size));
    }

    template <typename Iterator>
    boost::iterator_range<Iterator> range(
        const Iterator& begin,
        const Iterator& end)
    {
        return boost::make_iterator_range(begin, end);
    }

    template <typename Type, integer N>
    boost::iterator_range<Type*> range(
        Type (&that)[N])
    {
        return boost::make_iterator_range(
            std::begin(that), std::end(that));
    }

    template <typename Type>
    boost::iterator_range<const Type*> range(
        const std::initializer_list<Type>& that)
    {
        return boost::make_iterator_range(
            std::begin(that), std::end(that));
    }

}

#endif