// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // // // Deal with the differences between Microsoft and GNU implemenations // of hash_map. Allows all platforms to use |base::hash_map| and // |base::hash_set|. // eg: // base::hash_map<int> my_map; // base::hash_set<int> my_set; // #ifndef BASE_HASH_TABLES_H__ #define BASE_HASH_TABLES_H__ #include "build/build_config.h" #if defined(COMPILER_MSVC) #include <hash_map> #include <hash_set> namespace base { using stdext::hash_map; using stdext::hash_set; } #elif defined(COMPILER_GCC) // This is a hack to disable the gcc 4.4 warning about hash_map and hash_set // being deprecated. We can get rid of this when we upgrade to VS2008 and we // can use <tr1/unordered_map> and <tr1/unordered_set>. #ifdef __DEPRECATED #define CHROME_OLD__DEPRECATED __DEPRECATED #undef __DEPRECATED #endif #include <ext/hash_map> #include <ext/hash_set> #ifdef CHROME_OLD__DEPRECATED #define __DEPRECATED CHROME_OLD__DEPRECATED #undef CHROME_OLD__DEPRECATED #endif #include <tr1/functional> namespace base { using __gnu_cxx::hash_map; using __gnu_cxx::hash_set; } // Implement string hash functions so that strings of various flavors can // be used as keys in STL maps and sets. namespace __gnu_cxx { template<> struct hash<wchar_t*> { size_t operator()(const wchar_t* s) const { return std::tr1::hash<const wchar_t*>()(s); } }; template<> struct hash<const wchar_t*> { size_t operator()(const wchar_t* s) const { return std::tr1::hash<const wchar_t*>()(s); } }; template<> struct hash<std::wstring> { size_t operator()(const std::wstring& s) const { return std::tr1::hash<std::wstring>()(s); } }; template<> struct hash<const std::wstring> { size_t operator()(const std::wstring& s) const { return std::tr1::hash<std::wstring>()(s); } }; template<> struct hash<std::string> { size_t operator()(const std::string& s) const { return std::tr1::hash<std::string>()(s); } }; template<> struct hash<const std::string> { size_t operator()(const std::string& s) const { return std::tr1::hash<std::string>()(s); } }; template<> struct hash<long long> { size_t operator()(long long i) const { return std::tr1::hash<long>()((long) i); } }; } #endif #endif // BASE_HASH_TABLES_H__