types_traits.hpp   [plain text]

// -*- C++ -*-

// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
//
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// General Public License for more details.

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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.

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// is hereby granted without fee, provided that the above copyright
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/**
 * @file types_traits.hpp
 * Contains a traits class of types used by containers.
 */

#ifndef PB_DS_TYPES_TRAITS_HPP
#define PB_DS_TYPES_TRAITS_HPP

#include <ext/pb_ds/detail/basic_types.hpp>
#include <ext/pb_ds/detail/type_utils.hpp>
#include <utility>

namespace pb_ds
{
  namespace detail
  {
    template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
    struct vt_base_selector
    {
      typedef value_type_base<Key, Mapped, Alloc, Store_Extra> type;
    };

    template<typename Key, typename Mapped, typename Alloc, bool Store_Extra>
    struct types_traits 
    : public vt_base_selector<Key, Mapped, Alloc, Store_Extra>::type
    {
      typedef typename Alloc::template rebind<Key>::other key_allocator;
      typedef typename key_allocator::value_type key_type;
      typedef typename key_allocator::pointer key_pointer;
      typedef typename key_allocator::const_pointer const_key_pointer;
      typedef typename key_allocator::reference key_reference;
      typedef typename key_allocator::const_reference const_key_reference;
      typedef typename Alloc::size_type size_type;

      // Extra value (used when the extra value is stored with each value).
      typedef std::pair<size_type, size_type> comp_hash;

      integral_constant<int, Store_Extra> m_store_extra_indicator;
      typename no_throw_copies<Key, Mapped>::indicator m_no_throw_copies_indicator;
    };
  } // namespace detail
} // namespace pb_ds

#endif