src/base/hash_tables.h

// Copyright 2010-2014, Google Inc.
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// Provides hash_map, hash_set, and the basic hash functions.
// Eventually we'll be switching to unorderd_map and unorderd_set.

#ifndef MOZC_BASE_HASH_TABLES_H_
#define MOZC_BASE_HASH_TABLES_H_


#ifdef OS_WIN
#include <hash_map>
#include <hash_set>
#if _MSC_VER < 1310 || _MSC_VER >= 1600
using std::hash_map;
using std::hash_set;
#else
using stdext::hash_map;
using stdext::hash_set;
#endif
#else  // not OS_WIN

#ifdef MOZC_USE_STLPORT
// Use stlport hash_set/hash_map for android.
#include <hash_map>
#include <hash_set>
#else  // not MOZC_USE_STLPORT

#include <ext/hash_map>
#include <ext/hash_set>
using __gnu_cxx::hash_map;
using __gnu_cxx::hash_set;

#include <string>
namespace __gnu_cxx {
// FNV-1a hash similar to tr1/functional_hash.h.
template <>
struct hash<std::string> {
  std::size_t operator()(const std::string& s) const {
    std::size_t result = 0;
    for (std::string::const_iterator i = s.begin(); i != s.end(); ++i) {
      result = (result * 131) + *i;
    }
    return result;
  }
};
}
#endif  // not MOZC_USE_STLPORT
#endif  // not OS_WIN

#endif  // MOZC_BASE_HASH_TABLES_H_