71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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Copyright (c) 2005-2017 Intel Corporation
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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#ifndef __TBB_range_iterator_H
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#define __TBB_range_iterator_H
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#include "../tbb_stddef.h"
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#if __TBB_CPP11_STD_BEGIN_END_PRESENT && __TBB_CPP11_AUTO_PRESENT && __TBB_CPP11_DECLTYPE_PRESENT
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#include <iterator>
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#endif
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namespace tbb {
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// iterators to first and last elements of container
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namespace internal {
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#if __TBB_CPP11_STD_BEGIN_END_PRESENT && __TBB_CPP11_AUTO_PRESENT && __TBB_CPP11_DECLTYPE_PRESENT
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using std::begin;
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using std::end;
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template<typename Container>
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auto first(Container& c)-> decltype(begin(c)) {return begin(c);}
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template<typename Container>
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auto first(const Container& c)-> decltype(begin(c)) {return begin(c);}
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template<typename Container>
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auto last(Container& c)-> decltype(begin(c)) {return end(c);}
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template<typename Container>
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auto last(const Container& c)-> decltype(begin(c)) {return end(c);}
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#else
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template<typename Container>
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typename Container::iterator first(Container& c) {return c.begin();}
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template<typename Container>
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typename Container::const_iterator first(const Container& c) {return c.begin();}
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template<typename Container>
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typename Container::iterator last(Container& c) {return c.end();}
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template<typename Container>
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typename Container::const_iterator last(const Container& c) {return c.end();}
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#endif
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template<typename T, size_t size>
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T* first(T (&arr) [size]) {return arr;}
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template<typename T, size_t size>
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T* last(T (&arr) [size]) {return arr + size;}
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} //namespace internal
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} //namespace tbb
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#endif // __TBB_range_iterator_H
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