libstdc++-v3/include/ext/pb_ds/detail/types_traits.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 types_traits.hpp
  44  * Contains a traits class of types used by containers.
  45  */
  46
  47 #ifndef PB_DS_TYPES_TRAITS_HPP
  48 #define PB_DS_TYPES_TRAITS_HPP
  49
  50 #include <ext/pb_ds/detail/basic_types.hpp>
  51 #include <ext/pb_ds/detail/type_utils.hpp>
  52 #include <utility>
  53
  54 namespace pb_ds
  55 {
  56   namespace detail
  57   {
  58
  59     template<typename Key, typename Mapped, class Allocator, bool Store_Extra>
  60     struct vt_base_selector
  61     {
  62       typedef value_type_base< Key, Mapped, Allocator, Store_Extra> type;
  63     };
  64
  65     template<typename Key, typename Mapped, class Allocator, bool Store_Extra>
  66     struct types_traits
  67     : public vt_base_selector<Key, Mapped, Allocator, Store_Extra>::type
  68     {
  69
  70       typedef typename Allocator::template rebind< Key>::other key_allocator;
  71
  72       typedef typename key_allocator::value_type key_type;
  73
  74       typedef typename key_allocator::pointer key_pointer;
  75
  76       typedef typename key_allocator::const_pointer const_key_pointer;
  77
  78       typedef typename key_allocator::reference key_reference;
  79
  80       typedef typename key_allocator::const_reference const_key_reference;
  81
  82       typedef typename Allocator::size_type size_type;
  83
  84       typedef false_type store_extra_false_type;
  85
  86       typedef true_type store_extra_true_type;
  87
  88       integral_constant<int,Store_Extra> m_store_extra_indicator;
  89
  90       typedef false_type no_throw_copies_false_type;
  91
  92       typedef true_type no_throw_copies_true_type;
  93
  94       typename no_throw_copies<Key, Mapped>::indicator
  95       m_no_throw_copies_indicator;
  96
  97       // Extra value (used when the extra value is stored with each value).
  98       typedef typename comp_hash_< size_type>::comp_hash comp_hash;
  99     };
 100
 101   } // namespace detail
 102 } // namespace pb_ds
 103
 104 #endif // #ifndef PB_DS_TYPES_TRAITS_HPP