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