--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009, 2011 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file detail/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 <algorithm>
+#include <utility>
+#include <ext/pb_ds/tag_and_trait.hpp>
+#include <ext/pb_ds/detail/type_utils.hpp>
+#include <utility>
+
+namespace __gnu_pbds
+{
+ namespace detail
+ {
+ /**
+ * @addtogroup traits Traits
+ * @{
+ */
+
+ /// Primary template.
+ template<typename Key, typename Mapped>
+ struct no_throw_copies
+ {
+ static const bool __simple = is_simple<Key>::value
+ && is_simple<Mapped>::value;
+ typedef integral_constant<int, __simple> indicator;
+ };
+
+ /// Specialization.
+ template<typename Key>
+ struct no_throw_copies<Key, null_type>
+ {
+ typedef integral_constant<int, is_simple<Key>::value> indicator;
+ };
+
+
+ /// Stored value.
+ template<typename _Tv>
+ struct stored_value
+ {
+ typedef _Tv value_type;
+ value_type m_value;
+ };
+
+ /// Stored hash.
+ template<typename _Th>
+ struct stored_hash
+ {
+ typedef _Th hash_type;
+ hash_type m_hash;
+ };
+
+ /// Primary template for representation of stored data.
+ /// Two types of data can be stored: value and hash.
+ template<typename _Tv, typename _Th>
+ struct stored_data
+ : public stored_value<_Tv>, public stored_hash<_Th>
+ { };
+
+ /// Specialization for representation of stored data of just value type.
+ template<typename _Tv>
+ struct stored_data<_Tv, null_type>
+ : public stored_value<_Tv>
+ { };
+
+ /// Primary template.
+ template<typename Key, typename Mapped, typename _Alloc, bool Store_Hash>
+ struct type_base;
+
+ /**
+ * Specialization of type_base for the case where the hash value
+ * is not stored alongside each value.
+ */
+ template<typename Key, typename Mapped, typename _Alloc>
+ struct type_base<Key, Mapped, _Alloc, false>
+ {
+ public:
+ typedef typename _Alloc::size_type size_type;
+
+ private:
+ typedef typename _Alloc::template rebind<Mapped> __rebind_m;
+ typedef typename __rebind_m::other __rebind_ma;
+ typedef std::pair<const Key, Mapped> __value_type;
+ typedef typename _Alloc::template rebind<__value_type> __rebind_v;
+ typedef typename __rebind_v::other __rebind_va;
+
+ public:
+ typedef typename __rebind_ma::value_type mapped_type;
+ typedef typename __rebind_ma::pointer mapped_pointer;
+ typedef typename __rebind_ma::const_pointer mapped_const_pointer;
+ typedef typename __rebind_ma::reference mapped_reference;
+ typedef typename __rebind_ma::const_reference mapped_const_reference;
+
+ typedef typename __rebind_va::value_type value_type;
+ typedef typename __rebind_va::pointer pointer;
+ typedef typename __rebind_va::const_pointer const_pointer;
+ typedef typename __rebind_va::reference reference;
+ typedef typename __rebind_va::const_reference const_reference;
+
+ typedef stored_data<value_type, null_type> stored_data_type;
+ };
+
+ /**
+ * Specialization of type_base for the case where the hash value
+ * is stored alongside each value.
+ */
+ template<typename Key, typename Mapped, typename _Alloc>
+ struct type_base<Key, Mapped, _Alloc, true>
+ {
+ public:
+ typedef typename _Alloc::size_type size_type;
+
+ private:
+ typedef typename _Alloc::template rebind<Mapped> __rebind_m;
+ typedef typename __rebind_m::other __rebind_ma;
+ typedef std::pair<const Key, Mapped> __value_type;
+ typedef typename _Alloc::template rebind<__value_type> __rebind_v;
+ typedef typename __rebind_v::other __rebind_va;
+
+ public:
+ typedef typename __rebind_ma::value_type mapped_type;
+ typedef typename __rebind_ma::pointer mapped_pointer;
+ typedef typename __rebind_ma::const_pointer mapped_const_pointer;
+ typedef typename __rebind_ma::reference mapped_reference;
+ typedef typename __rebind_ma::const_reference mapped_const_reference;
+
+ typedef typename __rebind_va::value_type value_type;
+ typedef typename __rebind_va::pointer pointer;
+ typedef typename __rebind_va::const_pointer const_pointer;
+ typedef typename __rebind_va::reference reference;
+ typedef typename __rebind_va::const_reference const_reference;
+
+ typedef stored_data<value_type, size_type> stored_data_type;
+ };
+
+
+ /**
+ * Specialization of type_base for the case where the hash value
+ * is not stored alongside each value.
+ */
+ template<typename Key, typename _Alloc>
+ struct type_base<Key, null_type, _Alloc, false>
+ {
+ public:
+ typedef typename _Alloc::size_type size_type;
+ typedef Key value_type;
+
+ private:
+ typedef typename _Alloc::template rebind<null_type> __rebind_m;
+ typedef typename __rebind_m::other __rebind_ma;
+ typedef typename _Alloc::template rebind<value_type> __rebind_v;
+ typedef typename __rebind_v::other __rebind_va;
+
+ public:
+ typedef typename __rebind_ma::value_type mapped_type;
+ typedef typename __rebind_ma::pointer mapped_pointer;
+ typedef typename __rebind_ma::const_pointer mapped_const_pointer;
+ typedef typename __rebind_ma::reference mapped_reference;
+ typedef typename __rebind_ma::const_reference mapped_const_reference;
+
+ typedef typename __rebind_va::pointer pointer;
+ typedef typename __rebind_va::const_pointer const_pointer;
+ typedef typename __rebind_va::reference reference;
+ typedef typename __rebind_va::const_reference const_reference;
+
+ typedef stored_data<value_type, null_type> stored_data_type;
+
+ static null_type s_null_type;
+ };
+
+ template<typename Key, typename _Alloc>
+ null_type
+ type_base<Key, null_type, _Alloc, false>::s_null_type;
+
+
+ /**
+ * Specialization of type_base for the case where the hash value
+ * is stored alongside each value.
+ */
+ template<typename Key, typename _Alloc>
+ struct type_base<Key, null_type, _Alloc, true>
+ {
+ public:
+ typedef typename _Alloc::size_type size_type;
+ typedef Key value_type;
+
+ private:
+ typedef typename _Alloc::template rebind<null_type> __rebind_m;
+ typedef typename __rebind_m::other __rebind_ma;
+ typedef typename _Alloc::template rebind<value_type> __rebind_v;
+ typedef typename __rebind_v::other __rebind_va;
+
+ public:
+ typedef typename __rebind_ma::value_type mapped_type;
+ typedef typename __rebind_ma::pointer mapped_pointer;
+ typedef typename __rebind_ma::const_pointer mapped_const_pointer;
+ typedef typename __rebind_ma::reference mapped_reference;
+ typedef typename __rebind_ma::const_reference mapped_const_reference;
+
+ typedef typename __rebind_va::pointer pointer;
+ typedef typename __rebind_va::const_pointer const_pointer;
+ typedef typename __rebind_va::reference reference;
+ typedef typename __rebind_va::const_reference const_reference;
+
+ typedef stored_data<value_type, size_type> stored_data_type;
+
+ static null_type s_null_type;
+ };
+
+ template<typename Key, typename _Alloc>
+ null_type
+ type_base<Key, null_type, _Alloc, true>::s_null_type;
+
+
+ /// Type base dispatch.
+ template<typename Key, typename Mapped, typename _Alloc, bool Store_Hash>
+ struct type_dispatch
+ {
+ typedef type_base<Key, Mapped, _Alloc, Store_Hash> type;
+ };
+
+ /// Traits for abstract types.
+ template<typename Key, typename Mapped, typename _Alloc, bool Store_Hash>
+ struct types_traits
+ : public type_dispatch<Key, Mapped, _Alloc, Store_Hash>::type
+ {
+ private:
+ typedef no_throw_copies<Key, Mapped> __nothrowcopy;
+ typedef typename _Alloc::template rebind<Key>::other __rebind_a;
+
+ public:
+ typedef typename _Alloc::size_type size_type;
+ typedef typename __rebind_a::value_type key_type;
+ typedef typename __rebind_a::pointer key_pointer;
+ typedef typename __rebind_a::const_pointer key_const_pointer;
+ typedef typename __rebind_a::reference key_reference;
+ typedef typename __rebind_a::const_reference key_const_reference;
+ typedef std::pair<size_type, size_type> comp_hash;
+ typedef integral_constant<int, Store_Hash> store_extra;
+ typedef typename __nothrowcopy::indicator no_throw_indicator;
+
+ store_extra m_store_extra_indicator;
+ no_throw_indicator m_no_throw_copies_indicator;
+ };
+ //@}
+ } // namespace detail
+} // namespace __gnu_pbds
+
+#endif
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