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1 // -*- C++ -*- 2 3 // Copyright (C) 2005-2025 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_/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 55 namespace __gnu_pbds 56 { 57 namespace detail 58 { 59 #define PB_DS_CLASS_T_DEC \ 60 template<typename Value_Type, typename Cmp_Fn, typename _Alloc> 61 62 #define PB_DS_CLASS_C_DEC \ 63 binomial_heap_base<Value_Type, Cmp_Fn, _Alloc> 64 65 #ifdef _GLIBCXX_DEBUG 66 #define PB_DS_B_HEAP_BASE \ 67 left_child_next_sibling_heap<Value_Type, Cmp_Fn, \ 68 typename _Alloc::size_type, _Alloc, false> 69 #else 70 #define PB_DS_B_HEAP_BASE \ 71 left_child_next_sibling_heap<Value_Type, Cmp_Fn, \ 72 typename _Alloc::size_type, _Alloc> 73 #endif 74 75 /// Base class for binomial heap. 76 template<typename Value_Type, typename Cmp_Fn, typename _Alloc> 77 class binomial_heap_base 78 : public PB_DS_B_HEAP_BASE 79 { 80 private: 81 typedef rebind_traits<_Alloc, Value_Type> __rebind_v; 82 typedef PB_DS_B_HEAP_BASE base_type; 83 84 protected: 85 typedef typename base_type::node node; 86 typedef typename base_type::node_pointer node_pointer; 87 typedef typename base_type::node_const_pointer node_const_pointer; 88 89 public: 90 typedef Value_Type value_type; 91 typedef Cmp_Fn cmp_fn; 92 typedef _Alloc allocator_type; 93 typedef typename _Alloc::size_type size_type; 94 typedef typename _Alloc::difference_type difference_type; 95 96 typedef typename __rebind_v::pointer pointer; 97 typedef typename __rebind_v::const_pointer const_pointer; 98 typedef typename __rebind_v::reference reference; 99 typedef typename __rebind_v::const_reference const_reference; 100 101 typedef typename base_type::point_const_iterator point_const_iterator; 102 typedef typename base_type::point_iterator point_iterator; 103 typedef typename base_type::const_iterator const_iterator; 104 typedef typename base_type::iterator iterator; 105 106 public: 107 108 inline point_iterator 109 push(const_reference); 110 111 void 112 modify(point_iterator, const_reference); 113 114 inline const_reference 115 top() const; 116 117 void 118 pop(); 119 120 void 121 erase(point_iterator); 122 123 inline void 124 clear(); 125 126 template<typename Pred> 127 size_type 128 erase_if(Pred); 129 130 template<typename Pred> 131 void 132 split(Pred, PB_DS_CLASS_C_DEC&); 133 134 void 135 join(PB_DS_CLASS_C_DEC&); 136 137 protected: 138 139 binomial_heap_base(); 140 141 binomial_heap_base(const Cmp_Fn&); 142 143 binomial_heap_base(const PB_DS_CLASS_C_DEC&); 144 145 void 146 swap(PB_DS_CLASS_C_DEC&); 147 148 ~binomial_heap_base(); 149 150 template<typename It> 151 void 152 copy_from_range(It, It); 153 154 inline void 155 find_max(); 156 157 #ifdef _GLIBCXX_DEBUG 158 void 159 assert_valid(bool, const char*, int) const; 160 161 void 162 assert_max(const char*, int) const; 163 #endif 164 165 private: 166 167 inline node_pointer 168 fix(node_pointer) const; 169 170 inline void 171 insert_node(node_pointer); 172 173 inline void 174 remove_parentless_node(node_pointer); 175 176 inline node_pointer 177 join(node_pointer, node_pointer) const; 178 179 #ifdef _GLIBCXX_DEBUG 180 void 181 assert_node_consistent(node_const_pointer, bool, bool, 182 const char*, int) const; 183 #endif 184 185 protected: 186 node_pointer m_p_max; 187 }; 188 189 #define PB_DS_ASSERT_VALID_COND(X, _StrictlyBinomial) \ 190 _GLIBCXX_DEBUG_ONLY(X.assert_valid(_StrictlyBinomial,__FILE__, __LINE__);) 191 192 #define PB_DS_ASSERT_BASE_NODE_CONSISTENT(_Node, _Bool) \ 193 _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(_Node, _Bool, \ 194 __FILE__, __LINE__);) 195 196 #include <ext/pb_ds/detail/binomial_heap_base_/constructors_destructor_fn_imps.hpp> 197 #include <ext/pb_ds/detail/binomial_heap_base_/debug_fn_imps.hpp> 198 #include <ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp> 199 #include <ext/pb_ds/detail/binomial_heap_base_/insert_fn_imps.hpp> 200 #include <ext/pb_ds/detail/binomial_heap_base_/erase_fn_imps.hpp> 201 #include <ext/pb_ds/detail/binomial_heap_base_/split_join_fn_imps.hpp> 202 203 #undef PB_DS_ASSERT_BASE_NODE_CONSISTENT 204 #undef PB_DS_ASSERT_VALID_COND 205 #undef PB_DS_CLASS_C_DEC 206 #undef PB_DS_CLASS_T_DEC 207 #undef PB_DS_B_HEAP_BASE 208 } // namespace detail 209 } // namespace __gnu_pbds 210 211 #endif
