libstdc++-v3/testsuite/ext/pb_assoc/example/ms_traits.cc

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  31
  32 // Permission to use, copy, modify, sell, and distribute this software
  33 // is hereby granted without fee, provided that the above copyright
  34 // notice appears in all copies, and that both that copyright notice and
  35 // this permission notice appear in supporting documentation. None of
  36 // the above authors, nor IBM Haifa Research Laboratories, make any
  37 // representation about the suitability of this software for any
  38 // purpose. It is provided "as is" without express or implied warranty.
  39
  40 /**
  41  * @file ms_traits_example.cpp
  42  * A basic example showing how to use ms_traits for querying container types
  43  *      for their behavior.
  44  */
  45
  46 // For various associative containers.
  47 #include <ext/pb_assoc/assoc_cntnr.hpp>
  48 // For ms_traits.
  49 #include <ext/pb_assoc/ms_trait.hpp>
  50 // For cout, endl.
  51 #include <iostream>
  52
  53 void
  54 print_has_data_compound_data(bool has_data, bool has_compound_data)
  55 {
  56   if (!has_data)
  57     {
  58       std::cout << "Does not have data." << std::endl;
  59
  60       return;
  61     }
  62
  63   if (!has_compound_data)
  64     {
  65       std::cout << "Has data." << std::endl;
  66
  67       return;
  68     }
  69
  70   std::cout << "Has compound data." << std::endl;
  71 }
  72
  73 void
  74 print_mapping_level(unsigned int mapping_level)
  75 {
  76   std::cout << "Mapping level = " << mapping_level << std::endl;
  77 }
  78
  79 template<class Cntnr>
  80 void
  81 print_mapping_attributes()
  82 {
  83   typedef pb_assoc::ms_traits< Cntnr> traits;
  84
  85   print_has_data_compound_data(traits::has_data, traits::has_compound_data);
  86
  87   print_mapping_level(traits::mapping_level);
  88
  89   std::cout << std::endl << std::endl;
  90 }
  91
  92 int
  93 main()
  94 {
  95   std::cout << "\"Set\"-type container:" << std::endl;
  96
  97   print_mapping_attributes<
  98     pb_assoc::cc_hash_assoc_cntnr<int, pb_assoc::null_data_type> >();
  99
 100   std::cout << "\"Map\"-type container:" << std::endl;
 101
 102   print_mapping_attributes<
 103     pb_assoc::cc_hash_assoc_cntnr<int, char> >();
 104
 105   typedef
 106     pb_assoc::cc_hash_assoc_cntnr<
 107     int,
 108     pb_assoc::compound_data_type<
 109     pb_assoc::tree_assoc_cntnr<
 110     char,
 111     pb_assoc::null_data_type> > >
 112     mmap_t;
 113
 114   std::cout << "\"Multimap\"-type container:" << std::endl;
 115
 116   print_mapping_attributes<mmap_t>();
 117
 118   std::cout << "Rebound \"Multimap\"-type container:" << std::endl;
 119
 120   print_mapping_attributes<mmap_t::rebind<1>::other>();
 121 }