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/*
* Copyright 2008-2013 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/iterator/zip_iterator.h>
#include <thrust/detail/tuple_transform.h>
THRUST_NAMESPACE_BEGIN
template<typename IteratorTuple>
__host__ __device__
zip_iterator<IteratorTuple>
::zip_iterator()
{
} // end zip_iterator::zip_iterator()
template<typename IteratorTuple>
__host__ __device__
zip_iterator<IteratorTuple>
::zip_iterator(IteratorTuple iterator_tuple)
:m_iterator_tuple(iterator_tuple)
{
} // end zip_iterator::zip_iterator()
template<typename IteratorTuple>
template<typename OtherIteratorTuple>
__host__ __device__
zip_iterator<IteratorTuple>
::zip_iterator(const zip_iterator<OtherIteratorTuple> &other,
typename thrust::detail::enable_if_convertible<
OtherIteratorTuple,
IteratorTuple
>::type *)
:m_iterator_tuple(other.get_iterator_tuple())
{
} // end zip_iterator::zip_iterator()
template<typename IteratorTuple>
__host__ __device__
const IteratorTuple &zip_iterator<IteratorTuple>
::get_iterator_tuple() const
{
return m_iterator_tuple;
} // end zip_iterator::get_iterator_tuple()
template<typename IteratorTuple>
typename zip_iterator<IteratorTuple>::super_t::reference
__host__ __device__
zip_iterator<IteratorTuple>
::dereference() const
{
using namespace detail::tuple_impl_specific;
return thrust::detail::tuple_host_device_transform<
detail::dereference_iterator::template apply
>(get_iterator_tuple(), detail::dereference_iterator());
} // end zip_iterator::dereference()
__thrust_exec_check_disable__
template<typename IteratorTuple>
template<typename OtherIteratorTuple>
__host__ __device__
bool zip_iterator<IteratorTuple>
::equal(const zip_iterator<OtherIteratorTuple> &other) const
{
return get<0>(get_iterator_tuple()) == get<0>(other.get_iterator_tuple());
} // end zip_iterator::equal()
template<typename IteratorTuple>
__host__ __device__
void zip_iterator<IteratorTuple>
::advance(typename super_t::difference_type n)
{
using namespace detail::tuple_impl_specific;
tuple_for_each(m_iterator_tuple,
detail::advance_iterator<typename super_t::difference_type>(n));
} // end zip_iterator::advance()
template<typename IteratorTuple>
__host__ __device__
void zip_iterator<IteratorTuple>
::increment()
{
using namespace detail::tuple_impl_specific;
tuple_for_each(m_iterator_tuple, detail::increment_iterator());
} // end zip_iterator::increment()
template<typename IteratorTuple>
__host__ __device__
void zip_iterator<IteratorTuple>
::decrement()
{
using namespace detail::tuple_impl_specific;
tuple_for_each(m_iterator_tuple, detail::decrement_iterator());
} // end zip_iterator::decrement()
__thrust_exec_check_disable__
template<typename IteratorTuple>
template <typename OtherIteratorTuple>
__host__ __device__
typename zip_iterator<IteratorTuple>::super_t::difference_type
zip_iterator<IteratorTuple>
::distance_to(const zip_iterator<OtherIteratorTuple> &other) const
{
return get<0>(other.get_iterator_tuple()) - get<0>(get_iterator_tuple());
} // end zip_iterator::distance_to()
template<typename... Iterators>
__host__ __device__
zip_iterator<thrust::tuple<Iterators...>> make_zip_iterator(thrust::tuple<Iterators...> t)
{
return zip_iterator<thrust::tuple<Iterators...>>(t);
} // end make_zip_iterator()
template<typename... Iterators>
__host__ __device__
zip_iterator<thrust::tuple<Iterators...>> make_zip_iterator(Iterators... its)
{
return make_zip_iterator(thrust::make_tuple(its...));
} // end make_zip_iterator()
THRUST_NAMESPACE_END
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