types_traits.hpp

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00001 // -*- C++ -*-
00002 
00003 // Copyright (C) 2005, 2006 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 2, 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 // You should have received a copy of the GNU General Public License
00017 // along with this library; see the file COPYING.  If not, write to
00018 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
00019 // MA 02111-1307, USA.
00020 
00021 // As a special exception, you may use this file as part of a free
00022 // software library without restriction.  Specifically, if other files
00023 // instantiate templates or use macros or inline functions from this
00024 // file, or you compile this file and link it with other files to
00025 // produce an executable, this file does not by itself cause the
00026 // resulting executable to be covered by the GNU General Public
00027 // License.  This exception does not however invalidate any other
00028 // reasons why the executable file might be covered by the GNU General
00029 // Public License.
00030 
00031 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
00032 
00033 // Permission to use, copy, modify, sell, and distribute this software
00034 // is hereby granted without fee, provided that the above copyright
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00040 // warranty.
00041 
00042 /**
00043  * @file types_traits.hpp
00044  * Contains a traits class of types used by containers.
00045  */
00046 
00047 #ifndef PB_DS_TYPES_TRAITS_HPP
00048 #define PB_DS_TYPES_TRAITS_HPP
00049 
00050 #include <ext/pb_ds/detail/basic_types.hpp>
00051 #include <ext/pb_ds/detail/type_utils.hpp>
00052 #include <utility>
00053 
00054 namespace pb_ds
00055 {
00056   namespace detail
00057   {
00058     template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
00059     struct vt_base_selector
00060     {
00061       typedef value_type_base<Key, Mapped, Alloc, Store_Extra> type;
00062     };
00063 
00064     template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
00065     struct types_traits 
00066     : public vt_base_selector<Key, Mapped, Alloc, Store_Extra>::type
00067     {
00068       typedef typename Alloc::template rebind<Key>::other key_allocator;
00069       typedef typename key_allocator::value_type key_type;
00070       typedef typename key_allocator::pointer key_pointer;
00071       typedef typename key_allocator::const_pointer const_key_pointer;
00072       typedef typename key_allocator::reference key_reference;
00073       typedef typename key_allocator::const_reference const_key_reference;
00074       typedef typename Alloc::size_type size_type;
00075 
00076       // Extra value (used when the extra value is stored with each value).
00077       typedef std::pair<size_type, size_type> comp_hash;
00078 
00079       integral_constant<int, Store_Extra> m_store_extra_indicator;
00080       typename no_throw_copies<Key, Mapped>::indicator m_no_throw_copies_indicator;
00081     };
00082   } // namespace detail
00083 } // namespace pb_ds
00084 
00085 #endif 

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