libstdc++-v3/include/ext/pb_assoc/detail/value_type_adapter/value_type_traits.hpp

   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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  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 value_type_traits.hpp
  42  * Contains an adapter of mapping levels.
  43  */
  44
  45 template<typename Base_Key_,
  46          typename Key_,
  47          typename Data_,
  48          class Allocator_ >
  49 struct value_type_traits_
  50 {
  51   typedef std::pair< std::pair< Base_Key_, Key_>, Data_> value_type;
  52
  53   typedef
  54   typename Allocator_::template rebind<
  55     value_type>::other::reference
  56   reference;
  57
  58   typedef
  59   typename Allocator_::template rebind<
  60     value_type>::other::const_reference
  61   const_reference;
  62
  63   typedef
  64   typename Allocator_::template rebind<
  65     value_type>::other::pointer
  66   pointer;
  67
  68   typedef
  69   typename Allocator_::template rebind<
  70     value_type>::other::const_pointer
  71   const_pointer;
  72 };
  73
  74 template<typename Base_Key_, typename Key_, class Allocator_>
  75 struct value_type_traits_<
  76   Base_Key_,
  77   Key_,
  78   null_data_type,
  79   Allocator_>
  80 {
  81   typedef std::pair< Base_Key_, Key_> value_type;
  82
  83   typedef
  84   typename Allocator_::template rebind<
  85     value_type>::other::const_reference
  86   reference;
  87
  88   typedef
  89   typename Allocator_::template rebind<
  90     value_type>::other::const_reference
  91   const_reference;
  92
  93   typedef
  94   typename Allocator_::template rebind<
  95     value_type>::other::const_pointer
  96   pointer;
  97
  98   typedef
  99   typename Allocator_::template rebind<
 100     value_type>::other::const_pointer
 101   const_pointer;
 102 };