1 // -*- C++ -*- 2 3 // Copyright (C) 2005-2013 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 left_child_next_sibling_heap_/left_child_next_sibling_heap_.hpp 38 * Contains an implementation class for a basic heap. 39 */ 40 41 #ifndef PB_DS_LEFT_CHILD_NEXT_SIBLING_HEAP_HPP 42 #define PB_DS_LEFT_CHILD_NEXT_SIBLING_HEAP_HPP 43 44 /* 45 * Based on CLRS. 46 */ 47 48 #include <iterator> 49 #include <ext/pb_ds/detail/cond_dealtor.hpp> 50 #include <ext/pb_ds/detail/type_utils.hpp> 51 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/node.hpp> 52 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/point_const_iterator.hpp> 53 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/const_iterator.hpp> 54 #ifdef PB_DS_LC_NS_HEAP_TRACE_ 55 #include <iostream> 56 #endif 57 #include <debug/debug.h> 58 59 namespace __gnu_pbds 60 { 61 namespace detail 62 { 63 #ifdef _GLIBCXX_DEBUG 64 #define PB_DS_CLASS_T_DEC \ 65 template<typename Value_Type, typename Cmp_Fn, typename Node_Metadata, \ 66 typename _Alloc, bool Single_Link_Roots> 67 68 #define PB_DS_CLASS_C_DEC \ 69 left_child_next_sibling_heap<Value_Type, Cmp_Fn, Node_Metadata, \ 70 _Alloc, Single_Link_Roots> 71 #else 72 #define PB_DS_CLASS_T_DEC \ 73 template<typename Value_Type, typename Cmp_Fn, typename Node_Metadata, \ 74 typename _Alloc> 75 76 #define PB_DS_CLASS_C_DEC \ 77 left_child_next_sibling_heap<Value_Type, Cmp_Fn, Node_Metadata, _Alloc> 78 #endif 79 80 /// Base class for a basic heap. 81 template<typename Value_Type, 82 typename Cmp_Fn, 83 typename Node_Metadata, 84 typename _Alloc 85 #ifdef _GLIBCXX_DEBUG 86 ,bool Single_Link_Roots> 87 #else 88 > 89 #endif 90 class left_child_next_sibling_heap : public Cmp_Fn 91 { 92 protected: 93 typedef 94 typename _Alloc::template rebind< 95 left_child_next_sibling_heap_node_<Value_Type, Node_Metadata, 96 _Alloc> >::other 97 node_allocator; 98 99 typedef typename node_allocator::value_type node; 100 typedef typename node_allocator::pointer node_pointer; 101 typedef typename node_allocator::const_pointer node_const_pointer; 102 typedef Node_Metadata node_metadata; 103 typedef std::pair< node_pointer, node_pointer> node_pointer_pair; 104 105 private: 106 typedef cond_dealtor< node, _Alloc> cond_dealtor_t; 107 108 enum 109 { 110 simple_value = is_simple<Value_Type>::value 111 }; 112 113 typedef integral_constant<int, simple_value> no_throw_copies_t; 114 typedef typename _Alloc::template rebind<Value_Type> __rebind_v; 115 116 public: 117 typedef typename _Alloc::size_type size_type; 118 typedef typename _Alloc::difference_type difference_type; 119 typedef Value_Type value_type; 120 121 typedef typename __rebind_v::other::pointer pointer; 122 typedef typename __rebind_v::other::const_pointer const_pointer; 123 typedef typename __rebind_v::other::reference reference; 124 typedef typename __rebind_v::other::const_reference const_reference; 125 126 typedef left_child_next_sibling_heap_node_point_const_iterator_<node, _Alloc> 127 point_const_iterator; 128 129 typedef point_const_iterator point_iterator; 130 131 typedef left_child_next_sibling_heap_const_iterator_<node, _Alloc> 132 const_iterator; 133 134 typedef const_iterator iterator; 135 typedef Cmp_Fn cmp_fn; 136 typedef _Alloc allocator_type; 137 138 left_child_next_sibling_heap(); 139 left_child_next_sibling_heap(const Cmp_Fn&); 140 left_child_next_sibling_heap(const left_child_next_sibling_heap&); 141 142 void 143 swap(PB_DS_CLASS_C_DEC&); 144 145 ~left_child_next_sibling_heap(); 146 147 inline bool 148 empty() const; 149 150 inline size_type 151 size() const; 152 153 inline size_type 154 max_size() const; 155 156 Cmp_Fn& 157 get_cmp_fn(); 158 159 const Cmp_Fn& 160 get_cmp_fn() const; 161 162 inline iterator 163 begin(); 164 165 inline const_iterator 166 begin() const; 167 168 inline iterator 169 end(); 170 171 inline const_iterator 172 end() const; 173 174 void 175 clear(); 176 177 #ifdef PB_DS_LC_NS_HEAP_TRACE_ 178 void 179 trace() const; 180 #endif 181 182 protected: 183 inline node_pointer 184 get_new_node_for_insert(const_reference); 185 186 inline static void 187 make_child_of(node_pointer, node_pointer); 188 189 void 190 value_swap(left_child_next_sibling_heap&); 191 192 inline static node_pointer 193 parent(node_pointer); 194 195 inline void 196 swap_with_parent(node_pointer, node_pointer); 197 198 void 199 bubble_to_top(node_pointer); 200 201 inline void 202 actual_erase_node(node_pointer); 203 204 void 205 clear_imp(node_pointer); 206 207 void 208 to_linked_list(); 209 210 template<typename Pred> 211 node_pointer 212 prune(Pred); 213 214 #ifdef _GLIBCXX_DEBUG 215 void 216 assert_valid(const char*, int) const; 217 218 void 219 assert_node_consistent(node_const_pointer, bool, const char*, int) const; 220 221 static size_type 222 size_under_node(node_const_pointer); 223 224 static size_type 225 degree(node_const_pointer); 226 #endif 227 228 #ifdef PB_DS_LC_NS_HEAP_TRACE_ 229 static void 230 trace_node(node_const_pointer, size_type); 231 #endif 232 233 private: 234 #ifdef _GLIBCXX_DEBUG 235 void 236 assert_iterators(const char*, int) const; 237 238 void 239 assert_size(const char*, int) const; 240 241 static size_type 242 size_from_node(node_const_pointer); 243 #endif 244 245 node_pointer 246 recursive_copy_node(node_const_pointer); 247 248 inline node_pointer 249 get_new_node_for_insert(const_reference, false_type); 250 251 inline node_pointer 252 get_new_node_for_insert(const_reference, true_type); 253 254 #ifdef PB_DS_LC_NS_HEAP_TRACE_ 255 template<typename Metadata_> 256 static void 257 trace_node_metadata(node_const_pointer, type_to_type<Metadata_>); 258 259 static void 260 trace_node_metadata(node_const_pointer, type_to_type<null_type>); 261 #endif 262 263 static node_allocator s_node_allocator; 264 static no_throw_copies_t s_no_throw_copies_ind; 265 266 protected: 267 node_pointer m_p_root; 268 size_type m_size; 269 }; 270 271 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/constructors_destructor_fn_imps.hpp> 272 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/iterators_fn_imps.hpp> 273 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/debug_fn_imps.hpp> 274 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/trace_fn_imps.hpp> 275 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/insert_fn_imps.hpp> 276 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/erase_fn_imps.hpp> 277 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/info_fn_imps.hpp> 278 #include <ext/pb_ds/detail/left_child_next_sibling_heap_/policy_access_fn_imps.hpp> 279 280 #undef PB_DS_CLASS_C_DEC 281 #undef PB_DS_CLASS_T_DEC 282 283 } // namespace detail 284 } // namespace __gnu_pbds 285 286 #endif 287
