1// -*- C++ -*- 2 3// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the terms 7// of the GNU General Public License as published by the Free Software 8// Foundation; either version 3, or (at your option) any later 9// version. 10 11// This library is distributed in the hope that it will be useful, but 12// WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14// General Public License for more details. 15 16// Under Section 7 of GPL version 3, you are granted additional 17// permissions described in the GCC Runtime Library Exception, version 18// 3.1, as published by the Free Software Foundation. 19 20// You should have received a copy of the GNU General Public License and 21// a copy of the GCC Runtime Library Exception along with this program; 22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23// <http://www.gnu.org/licenses/>. 24 25// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 26 27// Permission to use, copy, modify, sell, and distribute this software 28// is hereby granted without fee, provided that the above copyright 29// notice appears in all copies, and that both that copyright notice 30// and this permission notice appear in supporting documentation. None 31// of the above authors, nor IBM Haifa Research Laboratories, make any 32// representation about the suitability of this software for any 33// purpose. It is provided "as is" without express or implied 34// warranty. 35 36/** 37 * @file binomial_heap_base_.hpp 38 * Contains an implementation class for a base of binomial heaps. 39 */ 40 41#ifndef PB_DS_BINOMIAL_HEAP_BASE_HPP 42#define PB_DS_BINOMIAL_HEAP_BASE_HPP 43 44/* 45 * Binomial heap base. 46 * Vuillemin J is the mastah. 47 * Modified from CLRS. 48 */ 49 50#include <debug/debug.h> 51#include <ext/pb_ds/detail/cond_dealtor.hpp> 52#include <ext/pb_ds/detail/type_utils.hpp> 53#include <ext/pb_ds/detail/left_child_next_sibling_heap_/left_child_next_sibling_heap_.hpp> 54#include <ext/pb_ds/detail/left_child_next_sibling_heap_/null_metadata.hpp> 55 56namespace __gnu_pbds 57{ 58 namespace detail 59 { 60 61#define PB_DS_CLASS_T_DEC \ 62 template<typename Value_Type, class Cmp_Fn, class Allocator> 63 64#define PB_DS_CLASS_C_DEC \ 65 binomial_heap_base_<Value_Type, Cmp_Fn, Allocator> 66 67#ifdef _GLIBCXX_DEBUG 68#define PB_DS_BASE_C_DEC \ 69 left_child_next_sibling_heap_<Value_Type, Cmp_Fn, \ 70 typename Allocator::size_type, \ 71 Allocator, false> 72#else 73#define PB_DS_BASE_C_DEC \ 74 left_child_next_sibling_heap_<Value_Type, Cmp_Fn, \ 75 typename Allocator::size_type, Allocator> 76#endif 77 78 /** 79 * class description = "8y|\|0|\/|i41 h34p 74813"> 80 **/ 81 template<typename Value_Type, class Cmp_Fn, class Allocator> 82 class binomial_heap_base_ : public PB_DS_BASE_C_DEC 83 { 84 85 private: 86 typedef PB_DS_BASE_C_DEC base_type; 87 88 protected: 89 typedef typename base_type::node node; 90 91 typedef typename base_type::node_pointer node_pointer; 92 93 typedef typename base_type::const_node_pointer const_node_pointer; 94 95 public: 96 97 typedef typename Allocator::size_type size_type; 98 99 typedef typename Allocator::difference_type difference_type; 100 101 typedef Value_Type value_type; 102 103 typedef 104 typename Allocator::template rebind< 105 value_type>::other::pointer 106 pointer; 107 108 typedef 109 typename Allocator::template rebind< 110 value_type>::other::const_pointer 111 const_pointer; 112 113 typedef 114 typename Allocator::template rebind< 115 value_type>::other::reference 116 reference; 117 118 typedef 119 typename Allocator::template rebind< 120 value_type>::other::const_reference 121 const_reference; 122 123 typedef 124 typename PB_DS_BASE_C_DEC::const_point_iterator 125 const_point_iterator; 126 127 typedef typename PB_DS_BASE_C_DEC::point_iterator point_iterator; 128 129 typedef typename PB_DS_BASE_C_DEC::const_iterator const_iterator; 130 131 typedef typename PB_DS_BASE_C_DEC::iterator iterator; 132 133 typedef Cmp_Fn cmp_fn; 134 135 typedef Allocator allocator_type; 136 137 public: 138 139 inline point_iterator 140 push(const_reference r_val); 141 142 void 143 modify(point_iterator it, const_reference r_new_val); 144 145 inline const_reference 146 top() const; 147 148 void 149 pop(); 150 151 void 152 erase(point_iterator it); 153 154 inline void 155 clear(); 156 157 template<typename Pred> 158 size_type 159 erase_if(Pred pred); 160 161 template<typename Pred> 162 void 163 split(Pred pred, PB_DS_CLASS_C_DEC& other); 164 165 void 166 join(PB_DS_CLASS_C_DEC& other); 167 168 protected: 169 170 binomial_heap_base_(); 171 172 binomial_heap_base_(const Cmp_Fn& r_cmp_fn); 173 174 binomial_heap_base_(const PB_DS_CLASS_C_DEC& other); 175 176 void 177 swap(PB_DS_CLASS_C_DEC& other); 178 179 ~binomial_heap_base_(); 180 181 template<typename It> 182 void 183 copy_from_range(It first_it, It last_it); 184 185 inline void 186 find_max(); 187 188#ifdef _GLIBCXX_DEBUG 189 void 190 assert_valid(bool strictly_binomial) const; 191 192 void 193 assert_max() const; 194#endif 195 196 private: 197 198 inline node_pointer 199 fix(node_pointer p_nd) const; 200 201 inline void 202 insert_node(node_pointer p_nd); 203 204 inline void 205 remove_parentless_node(node_pointer p_nd); 206 207 inline node_pointer 208 join(node_pointer p_lhs, node_pointer p_rhs) const; 209 210#ifdef _GLIBCXX_DEBUG 211 void 212 assert_node_consistent(const_node_pointer, bool, bool) const; 213#endif 214 215 protected: 216 node_pointer m_p_max; 217 }; 218 219#include <ext/pb_ds/detail/binomial_heap_base_/constructors_destructor_fn_imps.hpp> 220#include <ext/pb_ds/detail/binomial_heap_base_/debug_fn_imps.hpp> 221#include <ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp> 222#include <ext/pb_ds/detail/binomial_heap_base_/insert_fn_imps.hpp> 223#include <ext/pb_ds/detail/binomial_heap_base_/erase_fn_imps.hpp> 224#include <ext/pb_ds/detail/binomial_heap_base_/split_join_fn_imps.hpp> 225 226#undef PB_DS_CLASS_C_DEC 227#undef PB_DS_CLASS_T_DEC 228#undef PB_DS_BASE_C_DEC 229 230 231 } // namespace detail 232} // namespace __gnu_pbds 233 234#endif 235