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jeremybenn |
// -*- C++ -*-
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// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice
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// and this permission notice appear in supporting documentation. None
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied
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// warranty.
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/**
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* @file basic_types.hpp
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* Contains basic types used by containers.
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*/
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#ifndef PB_DS_BASIC_TYPES_HPP
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#define PB_DS_BASIC_TYPES_HPP
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#include <algorithm>
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#include <utility>
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#include <ext/pb_ds/tag_and_trait.hpp>
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#include <ext/pb_ds/detail/type_utils.hpp>
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namespace __gnu_pbds
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{
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namespace detail
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{
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template<typename Key, typename Mapped, typename Allocator, bool Store_Hash>
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struct value_type_base;
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/**
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* Specialization of value_type_base for the case where the hash value
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* is not stored alongside each value.
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**/
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template<typename Key, typename Mapped, typename Allocator>
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struct value_type_base<Key, Mapped, Allocator, false>
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{
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typedef typename Allocator::template rebind<Mapped>::other mapped_type_allocator;
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typedef typename mapped_type_allocator::value_type mapped_type;
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typedef typename mapped_type_allocator::pointer mapped_pointer;
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typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
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typedef typename mapped_type_allocator::reference mapped_reference;
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typedef typename mapped_type_allocator::const_reference const_mapped_reference;
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typedef typename Allocator::template rebind<std::pair<const Key, Mapped> >::other value_type_allocator;
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typedef typename value_type_allocator::value_type value_type;
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typedef typename value_type_allocator::pointer pointer;
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typedef typename value_type_allocator::const_pointer const_pointer;
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typedef typename value_type_allocator::reference reference;
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typedef typename value_type_allocator::const_reference const_reference;
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struct stored_value_type
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{
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value_type m_value;
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};
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};
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/**
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* Specialization of value_type_base for the case where the hash value
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* is stored alongside each value.
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**/
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template<typename Key, typename Mapped, typename Allocator>
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struct value_type_base<Key, Mapped, Allocator, true>
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{
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typedef typename Allocator::template rebind<Mapped>::other mapped_type_allocator;
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typedef typename mapped_type_allocator::value_type mapped_type;
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typedef typename mapped_type_allocator::pointer mapped_pointer;
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typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
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typedef typename mapped_type_allocator::reference mapped_reference;
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typedef typename mapped_type_allocator::const_reference const_mapped_reference;
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typedef typename Allocator::template rebind<std::pair<const Key, Mapped> >::other value_type_allocator;
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typedef typename value_type_allocator::value_type value_type;
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typedef typename value_type_allocator::pointer pointer;
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typedef typename value_type_allocator::const_pointer const_pointer;
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typedef typename value_type_allocator::reference reference;
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typedef typename value_type_allocator::const_reference const_reference;
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struct stored_value_type
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{
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value_type m_value;
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typename Allocator::size_type m_hash;
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};
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};
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#define PB_DS_CLASS_T_DEC \
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template<typename Key, typename Allocator>
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#define PB_DS_CLASS_C_DEC \
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value_type_base<Key, null_mapped_type, Allocator, false>
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/**
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* Specialization of value_type_base for the case where the hash value
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* is not stored alongside each value.
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**/
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template<typename Key, typename Allocator>
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struct value_type_base<Key, null_mapped_type, Allocator, false>
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{
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typedef typename Allocator::template rebind<null_mapped_type>::other mapped_type_allocator;
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typedef typename mapped_type_allocator::value_type mapped_type;
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typedef typename mapped_type_allocator::pointer mapped_pointer;
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typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
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typedef typename mapped_type_allocator::reference mapped_reference;
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typedef typename mapped_type_allocator::const_reference const_mapped_reference;
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typedef Key value_type;
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typedef typename Allocator::template rebind<value_type>::other value_type_allocator;
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typedef typename value_type_allocator::pointer pointer;
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typedef typename value_type_allocator::const_pointer const_pointer;
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typedef typename value_type_allocator::reference reference;
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typedef typename value_type_allocator::const_reference const_reference;
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struct stored_value_type
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{
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value_type m_value;
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};
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static null_mapped_type s_null_mapped;
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};
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PB_DS_CLASS_T_DEC
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null_mapped_type PB_DS_CLASS_C_DEC::s_null_mapped;
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#undef PB_DS_CLASS_T_DEC
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#undef PB_DS_CLASS_C_DEC
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#define PB_DS_CLASS_T_DEC \
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template<typename Key, typename Allocator>
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#define PB_DS_CLASS_C_DEC \
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value_type_base<Key, null_mapped_type, Allocator, true>
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/**
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* Specialization of value_type_base for the case where the hash value
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* is stored alongside each value.
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**/
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template<typename Key, typename Allocator>
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struct value_type_base<Key, null_mapped_type, Allocator, true>
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{
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typedef typename Allocator::template rebind<null_mapped_type>::other mapped_type_allocator;
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typedef typename mapped_type_allocator::value_type mapped_type;
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typedef typename mapped_type_allocator::pointer mapped_pointer;
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typedef typename mapped_type_allocator::const_pointer const_mapped_pointer;
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typedef typename mapped_type_allocator::reference mapped_reference;
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typedef typename mapped_type_allocator::const_reference const_mapped_reference;
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typedef Key value_type;
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typedef typename Allocator::template rebind<value_type>::other value_type_allocator;
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typedef typename value_type_allocator::pointer pointer;
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typedef typename value_type_allocator::const_pointer const_pointer;
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typedef typename value_type_allocator::reference reference;
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typedef typename value_type_allocator::const_reference const_reference;
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struct stored_value_type
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{
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value_type m_value;
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typename Allocator::size_type m_hash;
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};
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static null_mapped_type s_null_mapped;
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};
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PB_DS_CLASS_T_DEC
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null_mapped_type PB_DS_CLASS_C_DEC::s_null_mapped;
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#undef PB_DS_CLASS_T_DEC
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#undef PB_DS_CLASS_C_DEC
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template<typename Key, typename Mapped>
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struct no_throw_copies
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{
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typedef integral_constant<int, is_simple<Key>::value && is_simple<Mapped>::value> indicator;
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};
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template<typename Key>
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struct no_throw_copies<Key, null_mapped_type>
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{
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typedef integral_constant<int, is_simple<Key>::value> indicator;
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};
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} // namespace detail
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} // namespace __gnu_pbds
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#endif
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