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112 lines
2.7 KiB
112 lines
2.7 KiB
/* |
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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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/*! \file iterator_traits.inl |
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* \brief Inline file for iterator_traits.h. |
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*/ |
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#include <thrust/iterator/iterator_categories.h> |
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#include <thrust/iterator/detail/iterator_category_to_traversal.h> |
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#include <thrust/detail/type_traits.h> |
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namespace thrust |
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{ |
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template<typename Iterator> |
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struct iterator_value |
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{ |
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typedef typename thrust::iterator_traits<Iterator>::value_type type; |
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}; // end iterator_value |
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template<typename Iterator> |
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struct iterator_pointer |
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{ |
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typedef typename thrust::iterator_traits<Iterator>::pointer type; |
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}; // end iterator_pointer |
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template<typename Iterator> |
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struct iterator_reference |
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{ |
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typedef typename iterator_traits<Iterator>::reference type; |
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}; // end iterator_reference |
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template<typename Iterator> |
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struct iterator_difference |
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{ |
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typedef typename thrust::iterator_traits<Iterator>::difference_type type; |
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}; // end iterator_difference |
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template<typename Iterator> |
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struct iterator_system |
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: detail::iterator_category_to_system< |
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typename thrust::iterator_traits<Iterator>::iterator_category |
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> |
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{ |
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}; // end iterator_system |
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// specialize iterator_system for void *, which has no category |
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template<> |
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struct iterator_system<void *> |
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{ |
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typedef thrust::iterator_system<int*>::type type; |
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}; // end iterator_system<void*> |
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template<> |
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struct iterator_system<const void *> |
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{ |
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typedef thrust::iterator_system<const int*>::type type; |
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}; // end iterator_system<void*> |
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template <typename Iterator> |
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struct iterator_traversal |
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: detail::iterator_category_to_traversal< |
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typename thrust::iterator_traits<Iterator>::iterator_category |
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> |
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{ |
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}; // end iterator_traversal |
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namespace detail |
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{ |
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template <typename T> |
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struct is_iterator_traversal |
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: thrust::detail::is_convertible<T, incrementable_traversal_tag> |
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{ |
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}; // end is_iterator_traversal |
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template<typename T> |
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struct is_iterator_system |
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: detail::or_< |
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detail::is_convertible<T, any_system_tag>, |
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detail::or_< |
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detail::is_convertible<T, host_system_tag>, |
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detail::is_convertible<T, device_system_tag> |
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> |
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> |
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{ |
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}; // end is_iterator_system |
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} // end namespace detail |
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} // end namespace thrust |
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