libstdc++-v3/include/ext/pb_ds/detail/typelist_assoc_container.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 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 terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
  36 // and this permission notice appear in supporting documentation. None
  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
  39 // purpose. It is provided "as is" without express or implied
  40 // warranty.
  41
  42 /**
  43  * @file typelist_assoc_container.hpp
  44  * Contains an associative container based on typelists.
  45  * Typelists are an idea by Andrei Alexandrescu.
  46  */
  47
  48 #ifndef PB_DS_TYPELIST_CHAIN_HPP
  49 #define PB_DS_TYPELIST_CHAIN_HPP
  50
  51 #include <utility>
  52 #include <ext/pb_ds/detail/typelist.hpp>
  53
  54 namespace pb_ds
  55 {
  56   namespace detail
  57   {
  58     template<typename Typelist = typelist<null_type> >
  59     struct typelist_assoc_container
  60     {
  61       typedef Typelist tl;
  62     };
  63
  64     template<typename Typelist_Assoc_Cntnr, typename Key, typename Data>
  65     struct typelist_assoc_container_insert
  66     {
  67     private:
  68       typedef typename Typelist_Assoc_Cntnr::tl already_tl;
  69
  70       typedef typelist<typelist_chain<std::pair<Key, Data>, null_type> > new_tl;
  71
  72       typedef typename typelist_append< new_tl, already_tl>::type so_happy_together;
  73
  74     public:
  75       typedef typelist_assoc_container< so_happy_together> type;
  76     };
  77
  78 #include <ext/pb_ds/detail/typelist/typelist_assoc_container_find.hpp>
  79
  80     template<typename Typelist_Assoc_Cntnr, typename Key>
  81     struct typelist_assoc_container_find
  82     {
  83     private:
  84       typedef typename Typelist_Assoc_Cntnr::tl already;
  85       typedef typename already::root already_root;
  86     };
  87   } // namespace detail
  88 } // namespace pb_ds
  89
  90 #endif // #ifndef PB_DS_TYPELIST_CHAIN_HPP
  91