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152 lines
4.5 KiB
152 lines
4.5 KiB
![]()
11 years ago
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/*
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* Copyright 2008-2012 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <thrust/iterator/zip_iterator.h>
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#include <thrust/detail/tuple_transform.h>
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namespace thrust
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{
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template <typename IteratorTuple>
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zip_iterator<IteratorTuple>
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::zip_iterator(void)
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{
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} // end zip_iterator::zip_iterator()
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template <typename IteratorTuple>
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zip_iterator<IteratorTuple>
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::zip_iterator(IteratorTuple iterator_tuple)
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:m_iterator_tuple(iterator_tuple)
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{
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} // end zip_iterator::zip_iterator()
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template <typename IteratorTuple>
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template <typename OtherIteratorTuple>
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zip_iterator<IteratorTuple>
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::zip_iterator(const zip_iterator<OtherIteratorTuple> &other,
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typename thrust::detail::enable_if_convertible<
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OtherIteratorTuple,
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IteratorTuple
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>::type *)
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:m_iterator_tuple(other.get_iterator_tuple())
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{
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} // end zip_iterator::zip_iterator()
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template <typename IteratorTuple>
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const IteratorTuple &zip_iterator<IteratorTuple>
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::get_iterator_tuple(void) const
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{
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return m_iterator_tuple;
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} // end zip_iterator::get_iterator_tuple()
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template <typename IteratorTuple>
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typename zip_iterator<IteratorTuple>::super_t::reference
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zip_iterator<IteratorTuple>
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::dereference(void) const
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{
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using namespace detail::tuple_impl_specific;
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return thrust::detail::tuple_host_device_transform<detail::dereference_iterator::template apply>(get_iterator_tuple(), detail::dereference_iterator());
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} // end zip_iterator::dereference()
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__thrust_hd_warning_disable__
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template <typename IteratorTuple>
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template <typename OtherIteratorTuple>
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bool zip_iterator<IteratorTuple>
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::equal(const zip_iterator<OtherIteratorTuple> &other) const
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{
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return get<0>(get_iterator_tuple()) == get<0>(other.get_iterator_tuple());
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} // end zip_iterator::equal()
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template <typename IteratorTuple>
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void zip_iterator<IteratorTuple>
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::advance(typename super_t::difference_type n)
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{
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using namespace detail::tuple_impl_specific;
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// XXX note that we use a pointer to System to dispatch to avoid
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// default construction of a System
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typename thrust::iterator_system<zip_iterator>::type *use_me_to_dispatch = 0;
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// dispatch on system
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tuple_for_each(m_iterator_tuple,
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detail::advance_iterator<typename super_t::difference_type>(n),
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use_me_to_dispatch);
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} // end zip_iterator::advance()
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template <typename IteratorTuple>
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void zip_iterator<IteratorTuple>
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::increment(void)
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{
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using namespace detail::tuple_impl_specific;
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// XXX note that we use a pointer to System to dispatch to avoid
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// default construction of a System
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typename thrust::iterator_system<zip_iterator>::type *use_me_to_dispatch = 0;
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// dispatch on system
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tuple_for_each(m_iterator_tuple, detail::increment_iterator(),
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use_me_to_dispatch);
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} // end zip_iterator::increment()
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template <typename IteratorTuple>
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void zip_iterator<IteratorTuple>
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::decrement(void)
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{
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using namespace detail::tuple_impl_specific;
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// XXX note that we use a pointer to System to dispatch to avoid
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// default construction of a System
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typename thrust::iterator_system<zip_iterator>::type *use_me_to_dispatch = 0;
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// dispatch on system
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tuple_for_each(m_iterator_tuple, detail::decrement_iterator(),
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use_me_to_dispatch);
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} // end zip_iterator::decrement()
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__thrust_hd_warning_disable__
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template <typename IteratorTuple>
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template <typename OtherIteratorTuple>
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typename zip_iterator<IteratorTuple>::super_t::difference_type
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zip_iterator<IteratorTuple>
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::distance_to(const zip_iterator<OtherIteratorTuple> &other) const
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{
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return get<0>(other.get_iterator_tuple()) - get<0>(get_iterator_tuple());
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} // end zip_iterator::distance_to()
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template <typename IteratorTuple>
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zip_iterator<IteratorTuple> make_zip_iterator(IteratorTuple t)
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{
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return zip_iterator<IteratorTuple>(t);
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} // end make_zip_iterator()
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} // end thrust
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