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97 lines
2.2 KiB
97 lines
2.2 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/detail/type_traits/pointer_traits.h>
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#if __GNUC__
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// forward declaration of gnu's __normal_iterator
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namespace __gnu_cxx
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{
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template<typename Iterator, typename Container> class __normal_iterator;
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} // end __gnu_cxx
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#endif // __GNUC__
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#if _MSC_VER
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// forward declaration of MSVC's "normal iterators"
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namespace std
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{
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template<typename Value, typename Difference, typename Pointer, typename Reference> struct _Ranit;
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} // end std
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#endif // _MSC_VER
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namespace thrust
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{
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namespace detail
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{
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#ifdef __GNUC__
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template<typename T>
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struct is_gnu_normal_iterator
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: false_type
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{};
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// catch gnu __normal_iterators
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template<typename Iterator, typename Container>
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struct is_gnu_normal_iterator< __gnu_cxx::__normal_iterator<Iterator, Container> >
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: true_type
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{};
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#endif // __GNUC__
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#ifdef _MSC_VER
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// catch msvc _Ranit
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template<typename Iterator>
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struct is_convertible_to_msvc_Ranit :
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is_convertible<
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Iterator,
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std::_Ranit<
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typename iterator_value<Iterator>::type,
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typename iterator_difference<Iterator>::type,
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typename iterator_pointer<Iterator>::type,
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typename iterator_reference<Iterator>::type
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>
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>
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{};
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#endif // _MSC_VER
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template<typename T>
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struct is_trivial_iterator :
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integral_constant<
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bool,
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is_pointer<T>::value
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| thrust::detail::is_thrust_pointer<T>::value
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#if __GNUC__
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| is_gnu_normal_iterator<T>::value
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#endif // __GNUC__
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#ifdef _MSC_VER
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| is_convertible_to_msvc_Ranit<T>::value
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#endif // _MSC_VER
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>
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{};
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} // end detail
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} // end thrust
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