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

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006, 2009 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  26
  27 // Permission to use, copy, modify, sell, and distribute this software
  28 // is hereby granted without fee, provided that the above copyright
  29 // notice appears in all copies, and that both that copyright notice
  30 // and this permission notice appear in supporting documentation. None
  31 // of the above authors, nor IBM Haifa Research Laboratories, make any
  32 // representation about the suitability of this software for any
  33 // purpose. It is provided "as is" without express or implied
  34 // warranty.
  35
  36 /**
  37  * @file types_traits.hpp
  38  * Contains a traits class of types used by containers.
  39  */
  40
  41 #ifndef PB_DS_TYPES_TRAITS_HPP
  42 #define PB_DS_TYPES_TRAITS_HPP
  43
  44 #include <ext/pb_ds/detail/basic_types.hpp>
  45 #include <ext/pb_ds/detail/type_utils.hpp>
  46 #include <utility>
  47
  48 namespace __gnu_pbds
  49 {
  50   namespace detail
  51   {
  52     template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
  53     struct vt_base_selector
  54     {
  55       typedef value_type_base<Key, Mapped, Alloc, Store_Extra> type;
  56     };
  57
  58     template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
  59     struct types_traits
  60     : public vt_base_selector<Key, Mapped, Alloc, Store_Extra>::type
  61     {
  62       typedef typename Alloc::template rebind<Key>::other key_allocator;
  63       typedef typename key_allocator::value_type key_type;
  64       typedef typename key_allocator::pointer key_pointer;
  65       typedef typename key_allocator::const_pointer const_key_pointer;
  66       typedef typename key_allocator::reference key_reference;
  67       typedef typename key_allocator::const_reference const_key_reference;
  68       typedef typename Alloc::size_type size_type;
  69
  70       // Extra value (used when the extra value is stored with each value).
  71       typedef std::pair<size_type, size_type>   comp_hash;
  72
  73       typedef integral_constant<int, Store_Extra> store_extra;
  74       store_extra       m_store_extra_indicator;
  75
  76       typedef typename no_throw_copies<Key, Mapped>::indicator no_throw_copies;
  77       no_throw_copies   m_no_throw_copies_indicator;
  78     };
  79   } // namespace detail
  80 } // namespace __gnu_pbds
  81
  82 #endif