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7c673cae | 1 | // Copyright (c) 2011-present, Facebook, Inc. All rights reserved. |
11fdf7f2 TL |
2 | // This source code is licensed under both the GPLv2 (found in the |
3 | // COPYING file in the root directory) and Apache 2.0 License | |
4 | // (found in the LICENSE.Apache file in the root directory). | |
7c673cae FG |
5 | #pragma once |
6 | ||
7 | #include <map> | |
8 | #include <string> | |
9 | ||
10 | #include "rocksdb/comparator.h" | |
11 | #include "rocksdb/slice.h" | |
12 | #include "util/coding.h" | |
7c673cae FG |
13 | |
14 | namespace rocksdb { | |
15 | namespace stl_wrappers { | |
16 | ||
17 | struct LessOfComparator { | |
18 | explicit LessOfComparator(const Comparator* c = BytewiseComparator()) | |
19 | : cmp(c) {} | |
20 | ||
21 | bool operator()(const std::string& a, const std::string& b) const { | |
22 | return cmp->Compare(Slice(a), Slice(b)) < 0; | |
23 | } | |
24 | bool operator()(const Slice& a, const Slice& b) const { | |
25 | return cmp->Compare(a, b) < 0; | |
26 | } | |
27 | ||
28 | const Comparator* cmp; | |
29 | }; | |
30 | ||
31 | typedef std::map<std::string, std::string, LessOfComparator> KVMap; | |
32 | } | |
33 | } |