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66 lines
1.7 KiB
66 lines
1.7 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/detail/config.h>
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#include <thrust/iterator/counting_iterator.h>
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#include <thrust/iterator/iterator_adaptor.h>
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#include <thrust/iterator/detail/any_assign.h>
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#include <cstddef> // for std::ptrdiff_t
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namespace thrust
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{
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// forward declaration of discard_iterator
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template<typename> class discard_iterator;
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namespace detail
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{
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template<typename System>
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struct discard_iterator_base
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{
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// XXX value_type should actually be void
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// but this interferes with zip_iterator<discard_iterator>
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typedef any_assign value_type;
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typedef any_assign& reference;
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typedef std::ptrdiff_t incrementable;
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typedef typename thrust::counting_iterator<
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incrementable,
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System,
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thrust::random_access_traversal_tag
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> base_iterator;
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typedef typename thrust::iterator_adaptor<
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discard_iterator<System>,
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base_iterator,
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value_type,
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typename thrust::iterator_system<base_iterator>::type,
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typename thrust::iterator_traversal<base_iterator>::type,
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reference
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> type;
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}; // end discard_iterator_base
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} // end detail
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} // end thrust
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