--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009 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 basic_types.hpp
+ * Contains basic types used by containers.
+ */
+
+#ifndef PB_DS_BASIC_TYPES_HPP
+#define PB_DS_BASIC_TYPES_HPP
+
+#include <algorithm>
+#include <utility>
+#include <ext/pb_ds/tag_and_trait.hpp>
+#include <ext/pb_ds/detail/type_utils.hpp>
+
+namespace __gnu_pbds
+{
+ namespace detail
+ {
+ template<typename Key, typename Mapped, typename Allocator, bool Store_Hash>
+ struct value_type_base;
+
+ /**
+ * Specialization of value_type_base for the case where the hash value
+ * is not stored alongside each value.
+ **/
+ template<typename Key, typename Mapped, typename Allocator>
+ struct value_type_base<Key, Mapped, Allocator, false>
+ {
+ typedef typename Allocator::template rebind<Mapped>::other mapped_type_allocator;
+ typedef typename mapped_type_allocator::value_type mapped_type;
+ typedef typename mapped_type_allocator::pointer mapped_pointer;
+ typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
+ typedef typename mapped_type_allocator::reference mapped_reference;
+ typedef typename mapped_type_allocator::const_reference const_mapped_reference;
+
+ typedef typename Allocator::template rebind<std::pair<const Key, Mapped> >::other value_type_allocator;
+ typedef typename value_type_allocator::value_type value_type;
+ typedef typename value_type_allocator::pointer pointer;
+ typedef typename value_type_allocator::const_pointer const_pointer;
+ typedef typename value_type_allocator::reference reference;
+ typedef typename value_type_allocator::const_reference const_reference;
+
+ struct stored_value_type
+ {
+ value_type m_value;
+ };
+ };
+
+ /**
+ * Specialization of value_type_base for the case where the hash value
+ * is stored alongside each value.
+ **/
+ template<typename Key, typename Mapped, typename Allocator>
+ struct value_type_base<Key, Mapped, Allocator, true>
+ {
+ typedef typename Allocator::template rebind<Mapped>::other mapped_type_allocator;
+ typedef typename mapped_type_allocator::value_type mapped_type;
+ typedef typename mapped_type_allocator::pointer mapped_pointer;
+ typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
+ typedef typename mapped_type_allocator::reference mapped_reference;
+ typedef typename mapped_type_allocator::const_reference const_mapped_reference;
+
+ typedef typename Allocator::template rebind<std::pair<const Key, Mapped> >::other value_type_allocator;
+ typedef typename value_type_allocator::value_type value_type;
+ typedef typename value_type_allocator::pointer pointer;
+ typedef typename value_type_allocator::const_pointer const_pointer;
+ typedef typename value_type_allocator::reference reference;
+ typedef typename value_type_allocator::const_reference const_reference;
+
+ struct stored_value_type
+ {
+ value_type m_value;
+ typename Allocator::size_type m_hash;
+ };
+ };
+
+#define PB_DS_CLASS_T_DEC \
+ template<typename Key, typename Allocator>
+
+#define PB_DS_CLASS_C_DEC \
+ value_type_base<Key, null_mapped_type, Allocator, false>
+
+ /**
+ * Specialization of value_type_base for the case where the hash value
+ * is not stored alongside each value.
+ **/
+ template<typename Key, typename Allocator>
+ struct value_type_base<Key, null_mapped_type, Allocator, false>
+ {
+ typedef typename Allocator::template rebind<null_mapped_type>::other mapped_type_allocator;
+ typedef typename mapped_type_allocator::value_type mapped_type;
+ typedef typename mapped_type_allocator::pointer mapped_pointer;
+ typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
+ typedef typename mapped_type_allocator::reference mapped_reference;
+ typedef typename mapped_type_allocator::const_reference const_mapped_reference;
+
+ typedef Key value_type;
+
+ typedef typename Allocator::template rebind<value_type>::other value_type_allocator;
+ typedef typename value_type_allocator::pointer pointer;
+ typedef typename value_type_allocator::const_pointer const_pointer;
+ typedef typename value_type_allocator::reference reference;
+ typedef typename value_type_allocator::const_reference const_reference;
+
+ struct stored_value_type
+ {
+ value_type m_value;
+ };
+
+ static null_mapped_type s_null_mapped;
+ };
+
+ PB_DS_CLASS_T_DEC
+ null_mapped_type PB_DS_CLASS_C_DEC::s_null_mapped;
+
+#undef PB_DS_CLASS_T_DEC
+#undef PB_DS_CLASS_C_DEC
+
+#define PB_DS_CLASS_T_DEC \
+ template<typename Key, typename Allocator>
+
+#define PB_DS_CLASS_C_DEC \
+ value_type_base<Key, null_mapped_type, Allocator, true>
+
+ /**
+ * Specialization of value_type_base for the case where the hash value
+ * is stored alongside each value.
+ **/
+ template<typename Key, typename Allocator>
+ struct value_type_base<Key, null_mapped_type, Allocator, true>
+ {
+ typedef typename Allocator::template rebind<null_mapped_type>::other mapped_type_allocator;
+ typedef typename mapped_type_allocator::value_type mapped_type;
+ typedef typename mapped_type_allocator::pointer mapped_pointer;
+ typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
+ typedef typename mapped_type_allocator::reference mapped_reference;
+ typedef typename mapped_type_allocator::const_reference const_mapped_reference;
+
+ typedef Key value_type;
+
+ typedef typename Allocator::template rebind<value_type>::other value_type_allocator;
+ typedef typename value_type_allocator::pointer pointer;
+ typedef typename value_type_allocator::const_pointer const_pointer;
+ typedef typename value_type_allocator::reference reference;
+ typedef typename value_type_allocator::const_reference const_reference;
+
+ struct stored_value_type
+ {
+ value_type m_value;
+ typename Allocator::size_type m_hash;
+ };
+
+ static null_mapped_type s_null_mapped;
+ };
+
+ PB_DS_CLASS_T_DEC
+ null_mapped_type PB_DS_CLASS_C_DEC::s_null_mapped;
+
+#undef PB_DS_CLASS_T_DEC
+#undef PB_DS_CLASS_C_DEC
+
+ template<typename Key, typename Mapped>
+ struct no_throw_copies
+ {
+ typedef integral_constant<int, is_simple<Key>::value && is_simple<Mapped>::value> indicator;
+ };
+
+ template<typename Key>
+ struct no_throw_copies<Key, null_mapped_type>
+ {
+ typedef integral_constant<int, is_simple<Key>::value> indicator;
+ };
+ } // namespace detail
+} // namespace __gnu_pbds
+
+#endif
+
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