types_traits.hpp

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00001 // -*- C++ -*-
00002 
00003 // Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the terms
00007 // of the GNU General Public License as published by the Free Software
00008 // Foundation; either version 3, or (at your option) any later
00009 // version.
00010 
00011 // This library is distributed in the hope that it will be useful, but
00012 // WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 // General Public License for more details.
00015 
00016 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
00026 
00027 // Permission to use, copy, modify, sell, and distribute this software
00028 // is hereby granted without fee, provided that the above copyright
00029 // notice appears in all copies, and that both that copyright notice
00030 // and this permission notice appear in supporting documentation. None
00031 // of the above authors, nor IBM Haifa Research Laboratories, make any
00032 // representation about the suitability of this software for any
00033 // purpose. It is provided "as is" without express or implied
00034 // warranty.
00035 
00036 /**
00037  * @file types_traits.hpp
00038  * Contains a traits class of types used by containers.
00039  */
00040 
00041 #ifndef PB_DS_TYPES_TRAITS_HPP
00042 #define PB_DS_TYPES_TRAITS_HPP
00043 
00044 #include <ext/pb_ds/detail/basic_types.hpp>
00045 #include <ext/pb_ds/detail/type_utils.hpp>
00046 #include <utility>
00047 
00048 namespace __gnu_pbds
00049 {
00050   namespace detail
00051   {
00052     template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
00053     struct vt_base_selector
00054     {
00055       typedef value_type_base<Key, Mapped, Alloc, Store_Extra> type;
00056     };
00057 
00058     template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
00059     struct types_traits 
00060     : public vt_base_selector<Key, Mapped, Alloc, Store_Extra>::type
00061     {
00062       typedef typename Alloc::template rebind<Key>::other key_allocator;
00063       typedef typename key_allocator::value_type key_type;
00064       typedef typename key_allocator::pointer key_pointer;
00065       typedef typename key_allocator::const_pointer const_key_pointer;
00066       typedef typename key_allocator::reference key_reference;
00067       typedef typename key_allocator::const_reference const_key_reference;
00068       typedef typename Alloc::size_type size_type;
00069 
00070       // Extra value (used when the extra value is stored with each value).
00071       typedef std::pair<size_type, size_type>   comp_hash;
00072 
00073       typedef integral_constant<int, Store_Extra> store_extra;
00074       store_extra   m_store_extra_indicator;
00075 
00076       typedef typename no_throw_copies<Key, Mapped>::indicator no_throw_copies;
00077       no_throw_copies   m_no_throw_copies_indicator;
00078     };
00079   } // namespace detail
00080 } // namespace __gnu_pbds
00081 
00082 #endif 

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