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#ifndef HIPCUB_ROCPRIM_ITERATOR_COUNTING_INPUT_ITERATOR_HPP_
#define HIPCUB_ROCPRIM_ITERATOR_COUNTING_INPUT_ITERATOR_HPP_

#include "../../../config.hpp"

#include "iterator_category.hpp"
#include "iterator_wrapper.hpp"

#include <rocprim/iterator/counting_iterator.hpp>

#include <iterator>

BEGIN_HIPCUB_NAMESPACE

#ifndef DOXYGEN_SHOULD_SKIP_THIS // Do not document

template<class Incrementable, class Difference = std::ptrdiff_t>
class CountingInputIterator
    : public detail::IteratorWrapper<rocprim::counting_iterator<Incrementable, Difference>,
                                     CountingInputIterator<Incrementable, Difference>>
{
    using Iterator = rocprim::counting_iterator<Incrementable, Difference>;
    using Base
        = detail::IteratorWrapper<Iterator, CountingInputIterator<Incrementable, Difference>>;

public:
    using iterator_category = typename detail::IteratorCategory<typename Iterator::value_type,
                                                                typename Iterator::reference>::type;
    using self_type         = typename Iterator::self_type;

    __host__ __device__ __forceinline__ CountingInputIterator(
        const typename Iterator::value_type value)
        : Base(Iterator(value))
    {}

    // Cast from wrapped iterator to class itself
    __host__ __device__ __forceinline__ explicit CountingInputIterator(Iterator iterator)
        : Base(iterator)
    {}
};

#endif

END_HIPCUB_NAMESPACE

#endif // HIPCUB_ROCPRIM_ITERATOR_COUNTING_INPUT_ITERATOR_HPP_
