ceph/src/boost/libs/bimap/example/mighty_bimap.cpp

   1 // Boost.Bimap
   2 //
   3 // Copyright (c) 2006-2007 Matias Capeletto
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 // (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 //  VC++ 8.0 warns on usage of certain Standard Library and API functions that
  10 //  can be cause buffer overruns or other possible security issues if misused.
  11 //  See https://web.archive.org/web/20071014014301/http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
  12 //  But the wording of the warning is misleading and unsettling, there are no
  13 //  portable alternative functions, and VC++ 8.0's own libraries use the
  14 //  functions in question. So turn off the warnings.
  15 #define _CRT_SECURE_NO_DEPRECATE
  16 #define _SCL_SECURE_NO_DEPRECATE
  17
  18 // Boost.Bimap Example
  19 //-----------------------------------------------------------------------------
  20 // This is the translator example from the tutorial.
  21 // In this example the set type of relation is changed to allow the iteration
  22 // of the container.
  23
  24 #include <boost/config.hpp>
  25
  26 //[ code_mighty_bimap
  27
  28 #include <iostream>
  29 #include <string>
  30 #include <boost/bimap/bimap.hpp>
  31 #include <boost/bimap/list_of.hpp>
  32 #include <boost/bimap/unordered_set_of.hpp>
  33
  34 struct english {};
  35 struct spanish {};
  36
  37 int main()
  38 {
  39     using namespace boost::bimaps;
  40
  41     typedef bimap
  42     <
  43         unordered_set_of< tagged< std::string, spanish > >,
  44         unordered_set_of< tagged< std::string, english > >,
  45         list_of_relation
  46
  47     > translator;
  48
  49     translator trans;
  50
  51     // We have to use `push_back` because the collection of relations is
  52     // a `list_of_relation`
  53
  54     trans.push_back( translator::value_type("hola"  ,"hello"   ) );
  55     trans.push_back( translator::value_type("adios" ,"goodbye" ) );
  56     trans.push_back( translator::value_type("rosa"  ,"rose"    ) );
  57     trans.push_back( translator::value_type("mesa"  ,"table"   ) );
  58
  59     std::cout << "enter a word" << std::endl;
  60     std::string word;
  61     std::getline(std::cin,word);
  62
  63     // Search the queried word on the from index (Spanish)
  64
  65     translator::map_by<spanish>::const_iterator is
  66         = trans.by<spanish>().find(word);
  67
  68     if( is != trans.by<spanish>().end() )
  69     {
  70         std::cout << word << " is said "
  71                   << is->get<english>()
  72                   << " in English" << std::endl;
  73     }
  74     else
  75     {
  76         // Word not found in Spanish, try our luck in English
  77
  78         translator::map_by<english>::const_iterator ie
  79             = trans.by<english>().find(word);
  80
  81         if( ie != trans.by<english>().end() )
  82         {
  83             std::cout << word << " is said "
  84                       << ie->get<spanish>()
  85                       << " in Spanish" << std::endl;
  86         }
  87         else
  88         {
  89             // Word not found, show the possible translations
  90
  91             std::cout << "No such word in the dictionary"      << std::endl;
  92             std::cout << "These are the possible translations" << std::endl;
  93
  94             for( translator::const_iterator
  95                     i = trans.begin(),
  96                     i_end = trans.end();
  97
  98                     i != i_end ; ++i )
  99             {
 100                 std::cout << i->get<spanish>()
 101                           << " <---> "
 102                           << i->get<english>()
 103                           << std::endl;
 104             }
 105         }
 106     }
 107     return 0;
 108 }
 109 //]