73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/*
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Copyright (c) 2018, 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_INDEX_RANGE_HPP
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#define TORRENT_INDEX_RANGE_HPP
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namespace libtorrent {
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template <typename Index>
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struct index_iter
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{
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explicit index_iter(Index i) : m_idx(i) {}
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index_iter operator++()
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{
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++m_idx;
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return *this;
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}
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index_iter operator--()
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{
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--m_idx;
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return *this;
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}
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Index operator*() const { return m_idx; }
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friend inline bool operator==(index_iter lhs, index_iter rhs)
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{ return lhs.m_idx == rhs.m_idx; }
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friend inline bool operator!=(index_iter lhs, index_iter rhs)
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{ return lhs.m_idx != rhs.m_idx; }
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private:
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Index m_idx;
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};
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template <typename Index>
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struct index_range
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{
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Index _begin;
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Index _end;
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index_iter<Index> begin() { return index_iter<Index>{_begin}; }
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index_iter<Index> end() { return index_iter<Index>{_end}; }
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};
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}
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#endif
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