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121 lines
2.9 KiB
121 lines
2.9 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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#pragma once |
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#include <thrust/detail/config.h> |
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#include <thrust/detail/type_traits/has_nested_type.h> |
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#include <thrust/detail/raw_pointer_cast.h> |
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#include <thrust/detail/type_traits.h> |
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#include <thrust/iterator/detail/tuple_of_iterator_references.h> |
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namespace thrust |
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{ |
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namespace detail |
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{ |
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__THRUST_DEFINE_HAS_NESTED_TYPE(is_wrapped_reference, wrapped_reference_hint) |
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namespace raw_reference_detail |
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{ |
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template<typename T, typename Enable = void> |
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struct raw_reference |
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: add_reference<T> |
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{}; |
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// XXX consider making raw_reference<T&> an error |
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template<typename T> |
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struct raw_reference< |
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T, |
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typename thrust::detail::enable_if< |
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is_wrapped_reference< |
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typename remove_cv<T>::type |
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>::value |
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>::type |
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> |
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{ |
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typedef typename add_reference< |
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typename pointer_element<typename T::pointer>::type |
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>::type type; |
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}; |
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} // end raw_reference_ns |
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template<typename T> |
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struct raw_reference : |
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raw_reference_detail::raw_reference<T> |
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{}; |
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// wrapped reference-like things which aren't strictly wrapped references |
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// (e.g. tuples of wrapped references) are considered unwrappable |
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template<typename T> |
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struct is_unwrappable |
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: is_wrapped_reference<T> |
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{}; |
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template<typename T, typename Result = void> |
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struct enable_if_unwrappable |
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: enable_if< |
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is_unwrappable<T>::value, |
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Result |
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> |
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{}; |
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} // end detail |
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template<typename T> |
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inline __host__ __device__ typename detail::raw_reference<T>::type raw_reference_cast(T &ref) |
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{ |
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return *thrust::raw_pointer_cast(&ref); |
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} // end raw_reference_cast |
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template<typename T> |
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inline __host__ __device__ typename detail::raw_reference<const T>::type raw_reference_cast(const T &ref) |
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{ |
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return *thrust::raw_pointer_cast(&ref); |
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} // end raw_reference_cast |
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template< |
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typename T0, typename T1, typename T2, |
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typename T3, typename T4, typename T5, |
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typename T6, typename T7, typename T8, |
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typename T9 |
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> |
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inline __host__ __device__ |
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typename detail::enable_if_unwrappable< |
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thrust::detail::tuple_of_iterator_references<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9>, |
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typename detail::raw_reference< |
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thrust::detail::tuple_of_iterator_references<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9> |
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>::type |
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>::type |
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raw_reference_cast(detail::tuple_of_iterator_references<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9> t); |
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} // end thrust |
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#include <thrust/detail/raw_reference_cast.inl> |
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