64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
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/*
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Copyright (c) 2016, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_RANGE_HPP
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#define TORRENT_RANGE_HPP
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namespace libtorrent { namespace aux {
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template <typename Iter>
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struct iterator_range
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{
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Iter _begin, _end;
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Iter begin() { return _begin; }
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Iter end() { return _end; }
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};
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template <typename T, typename IndexType>
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iterator_range<T*> range(vector<T, IndexType>& vec
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, IndexType begin, IndexType end)
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{
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using type = typename underlying_index_t<IndexType>::type;
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return {vec.data() + static_cast<type>(begin), vec.data() + static_cast<type>(end)};
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}
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template <typename T, typename IndexType>
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iterator_range<T const*> range(vector<T, IndexType> const& vec
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, IndexType begin, IndexType end)
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{
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using type = typename underlying_index_t<IndexType>::type;
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return {vec.data() + static_cast<type>(begin), vec.data() + static_cast<type>(end)};
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}
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}}
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#endif
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