HashMap.hpp

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00001 /*******************************************************************************
00002 * Copyright (C) 2004 Vintela, Inc. All rights reserved.
00003 * Copyright (C) 2005 Novell, Inc. All rights reserved.
00004 *
00005 * Redistribution and use in source and binary forms, with or without
00006 * modification, are permitted provided that the following conditions are met:
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00008 *  - Redistributions of source code must retain the above copyright notice,
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00011 *  - Redistributions in binary form must reproduce the above copyright notice,
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00019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
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00031 
00032 
00037 #ifndef BLOCXX_HASH_MAP_HPP_INCLUDE_GUARD_
00038 #define BLOCXX_HASH_MAP_HPP_INCLUDE_GUARD_
00039 #include "blocxx/BLOCXX_config.h"
00040 #ifdef BLOCXX_HAVE_HASH_MAP
00041    #include <hash_map> // hash_map is better for the cache than BLOCXX_SortedVectorMap
00042    #define BLOCXX_HASH_MAP_NS std
00043    #define HashMap std::hash_map
00044 #elif BLOCXX_HAVE_EXT_HASH_MAP
00045    #include <ext/hash_map> // hash_map is better for the cache than BLOCXX_SortedVectorMap
00046    #define BLOCXX_HASH_MAP_NS __gnu_cxx
00047    #define HashMap __gnu_cxx::hash_map
00048 #else
00049    #include "blocxx/SortedVectorMap.hpp"
00050    #define BLOCXX_HASH_MAP_NS BLOCXX_NAMESPACE
00051    #define HashMap SortedVectorMap
00052 #endif
00053 #ifndef BLOCXX_HASH_SPECIALIZED_INCLUDE_GUARD_
00054 #define BLOCXX_HASH_SPECIALIZED_INCLUDE_GUARD_
00055 #if defined(BLOCXX_HAVE_HASH_MAP) || defined(BLOCXX_HAVE_EXT_HASH_MAP)
00056 #include "blocxx/String.hpp"
00057 
00058 // need to specialize hash
00059 namespace BLOCXX_HASH_MAP_NS
00060 {
00061 template<> struct hash<BLOCXX_NAMESPACE::String>
00062 {
00063    size_t operator()(const BLOCXX_NAMESPACE::String& s) const
00064    {
00065       return hash<const char*>()(s.c_str());
00066    }
00067 };
00068 }
00069 #endif
00070 #endif
00071 #undef BLOCXX_HASH_MAP_NS
00072 #endif

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