Dogcows Code - chaz/yoink/blob - src/moof/hash.hh

   1
   2 /*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
   3 **]  All rights reserved.
   4 *
   5 * vi:ts=4 sw=4 tw=75
   6 *
   7 * Distributable under the terms and conditions of the 2-clause BSD license;
   8 * see the file COPYING for a complete text of the license.
   9 *
  10 **************************************************************************/
  11
  12 #ifndef _MOOF_HASH_HH_
  13 #define _MOOF_HASH_HH_
  14
  15 /**
  16  * \file hash.hh
  17  * Hash tables and functions.
  18  */
  19
  20 #include <string>
  21
  22 #include <stlplus/containers/hash.hpp>
  23
  24
  25 namespace moof {
  26
  27
  28 using stlplus::hash;
  29
  30
  31 struct hash_function
  32 {
  33         // generic hash function
  34         unsigned operator () (const void* key, int len,
  35                                                   unsigned seed = -1) const;
  36
  37         unsigned operator () (const std::string& val) const
  38         {
  39                 return (*this)(val.data(), val.length());
  40         }
  41
  42         unsigned operator () (int val) const
  43         {
  44                 return val;
  45         }
  46 };
  47
  48
  49 } // namespace moof
  50
  51 #endif // _MOOF_HASH_HH_
  52