1// Copyright (c) 2010 Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8// * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10// * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14// * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30// Include this file to use unordered_map and unordered_set. If tr1
31// or C++11 is not available, you can switch to using hash_set and
32// hash_map by defining BP_USE_HASH_SET.
33
34#ifndef COMMON_UNORDERED_H_
35#define COMMON_UNORDERED_H_
36
37#if defined(BP_USE_HASH_SET)
38#include <hash_map>
39#include <hash_set>
40
41// For hash<string>.
42#include "util/hash/hash.h"
43
44template <class T, class U, class H = __gnu_cxx::hash<T> >
45struct unordered_map : public __gnu_cxx::hash_map<T, U, H> {};
46template <class T, class H = __gnu_cxx::hash<T> >
47struct unordered_set : public __gnu_cxx::hash_set<T, H> {};
48
49#else
50#include <unordered_map>
51#include <unordered_set>
52using std::unordered_map;
53using std::unordered_set;
54#endif
55
56#endif // COMMON_UNORDERED_H_
57