mirror of https://github.com/facebook/rocksdb.git
23 lines
809 B
C++
23 lines
809 B
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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namespace rocksdb {
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// A comparator to be used in std::set
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struct SetComparator {
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explicit SetComparator() : user_comparator_(BytewiseComparator()) {}
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explicit SetComparator(const Comparator* user_comparator)
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: user_comparator_(user_comparator ? user_comparator
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: BytewiseComparator()) {}
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bool operator()(const Slice& lhs, const Slice& rhs) const {
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return user_comparator_->Compare(lhs, rhs) < 0;
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}
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private:
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const Comparator* user_comparator_;
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};
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} // namespace rocksdb
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