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36fed23c | 1 | // -*- C++ -*- |
2 | ||
f1717362 | 3 | // Copyright (C) 2005-2016 Free Software Foundation, Inc. |
36fed23c | 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 | |
6bc9506f | 8 | // Foundation; either version 3, or (at your option) any later |
36fed23c | 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 | ||
6bc9506f | 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. | |
36fed23c | 19 | |
6bc9506f | 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/>. | |
36fed23c | 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 | /** | |
4f4a327e | 37 | * @file thin_heap_/insert_fn_imps.hpp |
36fed23c | 38 | * Contains an implementation for thin_heap_. |
39 | */ | |
40 | ||
41 | PB_DS_CLASS_T_DEC | |
42 | inline typename PB_DS_CLASS_C_DEC::point_iterator | |
43 | PB_DS_CLASS_C_DEC:: | |
44 | push(const_reference r_val) | |
45 | { | |
2548203e | 46 | PB_DS_ASSERT_VALID((*this)) |
2548203e | 47 | node_pointer p_nd = base_type::get_new_node_for_insert(r_val); |
36fed23c | 48 | p_nd->m_metadata = 0; |
e4bb1925 | 49 | p_nd->m_p_prev_or_parent = p_nd->m_p_l_child = 0; |
e4bb1925 | 50 | if (base_type::m_p_root == 0) |
36fed23c | 51 | { |
e4bb1925 | 52 | p_nd->m_p_next_sibling = 0; |
36fed23c | 53 | m_p_max = base_type::m_p_root = p_nd; |
2548203e | 54 | PB_DS_ASSERT_VALID((*this)) |
2548203e | 55 | return point_iterator(p_nd); |
36fed23c | 56 | } |
57 | ||
58 | p_nd->m_p_next_sibling = base_type::m_p_root; | |
e4bb1925 | 59 | base_type::m_p_root->m_p_prev_or_parent = 0; |
36fed23c | 60 | base_type::m_p_root = p_nd; |
36fed23c | 61 | update_max(p_nd); |
2548203e | 62 | PB_DS_ASSERT_VALID((*this)) |
2548203e | 63 | return point_iterator(p_nd); |
36fed23c | 64 | } |
65 | ||
66 | PB_DS_CLASS_T_DEC | |
67 | inline void | |
68 | PB_DS_CLASS_C_DEC:: | |
69 | make_root(node_pointer p_nd) | |
70 | { | |
4f4a327e | 71 | p_nd->m_metadata = p_nd->m_p_l_child == 0 |
72 | ? 0 : 1 + p_nd->m_p_l_child->m_metadata; | |
36fed23c | 73 | } |
74 | ||
75 | PB_DS_CLASS_T_DEC | |
76 | inline void | |
77 | PB_DS_CLASS_C_DEC:: | |
78 | make_root_and_link(node_pointer p_nd) | |
79 | { | |
80 | make_root(p_nd); | |
e4bb1925 | 81 | p_nd->m_p_prev_or_parent = 0; |
36fed23c | 82 | p_nd->m_p_next_sibling = base_type::m_p_root; |
e4bb1925 | 83 | if (base_type::m_p_root != 0) |
84 | base_type::m_p_root->m_p_prev_or_parent = 0; | |
36fed23c | 85 | |
86 | base_type::m_p_root = p_nd; | |
36fed23c | 87 | update_max(p_nd); |
88 | } | |
89 | ||
90 | PB_DS_CLASS_T_DEC | |
91 | inline void | |
92 | PB_DS_CLASS_C_DEC:: | |
93 | fix(node_pointer p_y) | |
94 | { | |
95 | while (true) | |
96 | { | |
e4bb1925 | 97 | if (p_y->m_p_prev_or_parent == 0) |
36fed23c | 98 | { |
99 | fix_root(p_y); | |
36fed23c | 100 | return; |
101 | } | |
e4bb1925 | 102 | else if (p_y->m_metadata == 1&& p_y->m_p_next_sibling == 0) |
36fed23c | 103 | { |
e4bb1925 | 104 | if (p_y->m_p_l_child != 0) |
36fed23c | 105 | { |
106 | fix_sibling_rank_1_unmarked(p_y); | |
36fed23c | 107 | return; |
108 | } | |
109 | ||
110 | fix_sibling_rank_1_marked(p_y); | |
36fed23c | 111 | p_y = p_y->m_p_prev_or_parent; |
112 | } | |
113 | else if (p_y->m_metadata > p_y->m_p_next_sibling->m_metadata + 1) | |
114 | { | |
e4bb1925 | 115 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_l_child != 0); |
36fed23c | 116 | if (p_y->m_metadata != p_y->m_p_l_child->m_metadata + 2) |
117 | { | |
118 | fix_sibling_general_unmarked(p_y); | |
36fed23c | 119 | return; |
120 | } | |
121 | ||
122 | fix_sibling_general_marked(p_y); | |
36fed23c | 123 | p_y = p_y->m_p_prev_or_parent; |
124 | } | |
e4bb1925 | 125 | else if ((p_y->m_p_l_child == 0&& |
126 | p_y->m_metadata == 2) ||(p_y->m_p_l_child != 0&& | |
36fed23c | 127 | p_y->m_metadata == p_y->m_p_l_child->m_metadata + 3)) |
128 | { | |
129 | node_pointer p_z = p_y->m_p_prev_or_parent; | |
36fed23c | 130 | fix_child(p_y); |
36fed23c | 131 | p_y = p_z; |
132 | } | |
133 | else | |
134 | return; | |
135 | } | |
136 | } | |
137 | ||
138 | PB_DS_CLASS_T_DEC | |
139 | inline void | |
140 | PB_DS_CLASS_C_DEC:: | |
141 | fix_root(node_pointer p_y) | |
142 | { | |
e4bb1925 | 143 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_prev_or_parent == 0); |
36fed23c | 144 | make_root(p_y); |
2548203e | 145 | PB_DS_ASSERT_NODE_CONSISTENT(p_y, true) |
146 | } | |
36fed23c | 147 | |
148 | PB_DS_CLASS_T_DEC | |
149 | inline void | |
150 | PB_DS_CLASS_C_DEC:: | |
151 | fix_sibling_rank_1_unmarked(node_pointer p_y) | |
152 | { | |
e4bb1925 | 153 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_prev_or_parent != 0); |
36fed23c | 154 | |
2b31bec4 | 155 | _GLIBCXX_DEBUG_ONLY(node_pointer p_w = p_y->m_p_l_child;) |
2548203e | 156 | _GLIBCXX_DEBUG_ASSERT(p_w != 0); |
e4bb1925 | 157 | _GLIBCXX_DEBUG_ASSERT(p_w->m_p_next_sibling == 0); |
158 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_next_sibling == 0); | |
36fed23c | 159 | |
160 | p_y->m_p_next_sibling = p_y->m_p_l_child; | |
36fed23c | 161 | p_y->m_p_next_sibling->m_p_prev_or_parent = p_y; |
e4bb1925 | 162 | p_y->m_p_l_child = 0; |
2548203e | 163 | PB_DS_ASSERT_NODE_CONSISTENT(p_y, false) |
164 | } | |
36fed23c | 165 | |
166 | PB_DS_CLASS_T_DEC | |
167 | inline void | |
168 | PB_DS_CLASS_C_DEC:: | |
169 | fix_sibling_rank_1_marked(node_pointer p_y) | |
170 | { | |
e4bb1925 | 171 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_prev_or_parent != 0); |
172 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_l_child == 0); | |
36fed23c | 173 | p_y->m_metadata = 0; |
2548203e | 174 | PB_DS_ASSERT_NODE_CONSISTENT(p_y, false) |
175 | } | |
36fed23c | 176 | |
177 | PB_DS_CLASS_T_DEC | |
178 | inline void | |
179 | PB_DS_CLASS_C_DEC:: | |
180 | fix_sibling_general_unmarked(node_pointer p_y) | |
181 | { | |
e4bb1925 | 182 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_prev_or_parent != 0); |
36fed23c | 183 | |
184 | node_pointer p_w = p_y->m_p_l_child; | |
e4bb1925 | 185 | _GLIBCXX_DEBUG_ASSERT(p_w != 0); |
186 | _GLIBCXX_DEBUG_ASSERT(p_w->m_p_next_sibling != 0); | |
36fed23c | 187 | |
188 | p_y->m_p_l_child = p_w->m_p_next_sibling; | |
189 | p_w->m_p_next_sibling->m_p_prev_or_parent = p_y; | |
190 | ||
191 | p_w->m_p_next_sibling = p_y->m_p_next_sibling; | |
e4bb1925 | 192 | _GLIBCXX_DEBUG_ASSERT(p_w->m_p_next_sibling != 0); |
36fed23c | 193 | p_w->m_p_next_sibling->m_p_prev_or_parent = p_w; |
194 | ||
195 | p_y->m_p_next_sibling = p_w; | |
196 | p_w->m_p_prev_or_parent = p_y; | |
197 | ||
2548203e | 198 | PB_DS_ASSERT_NODE_CONSISTENT(p_y, false) |
199 | } | |
36fed23c | 200 | |
201 | PB_DS_CLASS_T_DEC | |
202 | inline void | |
203 | PB_DS_CLASS_C_DEC:: | |
204 | fix_sibling_general_marked(node_pointer p_y) | |
205 | { | |
e4bb1925 | 206 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_prev_or_parent != 0); |
36fed23c | 207 | --p_y->m_metadata; |
2548203e | 208 | PB_DS_ASSERT_NODE_CONSISTENT(p_y, false) |
209 | } | |
36fed23c | 210 | |
211 | PB_DS_CLASS_T_DEC | |
212 | inline void | |
213 | PB_DS_CLASS_C_DEC:: | |
214 | fix_child(node_pointer p_y) | |
215 | { | |
e4bb1925 | 216 | _GLIBCXX_DEBUG_ASSERT(p_y->m_p_prev_or_parent != 0); |
36fed23c | 217 | |
e4bb1925 | 218 | if (p_y->m_p_next_sibling != 0) |
36fed23c | 219 | p_y->m_p_next_sibling->m_p_prev_or_parent = p_y->m_p_prev_or_parent; |
220 | ||
221 | if (p_y->m_p_prev_or_parent->m_p_l_child == p_y) | |
222 | p_y->m_p_prev_or_parent->m_p_l_child = p_y->m_p_next_sibling; | |
223 | else | |
224 | p_y->m_p_prev_or_parent->m_p_next_sibling = p_y->m_p_next_sibling; | |
225 | ||
226 | make_root_and_link(p_y); | |
227 | } | |
228 | ||
229 | PB_DS_CLASS_T_DEC | |
230 | void | |
231 | PB_DS_CLASS_C_DEC:: | |
232 | modify(point_iterator it, const_reference r_new_val) | |
233 | { | |
2548203e | 234 | PB_DS_ASSERT_VALID((*this)) |
4f4a327e | 235 | node_pointer p_nd = it.m_p_nd; |
e4bb1925 | 236 | _GLIBCXX_DEBUG_ASSERT(p_nd != 0); |
36fed23c | 237 | |
238 | const bool smaller = Cmp_Fn::operator()(r_new_val, p_nd->m_value); | |
36fed23c | 239 | p_nd->m_value = r_new_val; |
36fed23c | 240 | if (smaller) |
241 | { | |
242 | remove_node(p_nd); | |
e4bb1925 | 243 | p_nd->m_p_l_child = 0; |
36fed23c | 244 | make_root_and_link(p_nd); |
2548203e | 245 | PB_DS_ASSERT_VALID((*this)) |
2548203e | 246 | return; |
36fed23c | 247 | } |
248 | ||
e4bb1925 | 249 | if (p_nd->m_p_prev_or_parent == 0) |
36fed23c | 250 | { |
251 | update_max(p_nd); | |
2548203e | 252 | PB_DS_ASSERT_VALID((*this)) |
2548203e | 253 | return; |
36fed23c | 254 | } |
255 | ||
256 | node_pointer p_y = p_nd->m_p_prev_or_parent; | |
e4bb1925 | 257 | _GLIBCXX_DEBUG_ASSERT(p_y != 0); |
36fed23c | 258 | |
e4bb1925 | 259 | if (p_nd->m_p_next_sibling != 0) |
36fed23c | 260 | p_nd->m_p_next_sibling->m_p_prev_or_parent = p_y; |
261 | ||
262 | if (p_y->m_p_l_child == p_nd) | |
263 | p_y->m_p_l_child = p_nd->m_p_next_sibling; | |
264 | else | |
265 | p_y->m_p_next_sibling = p_nd->m_p_next_sibling; | |
266 | ||
267 | fix(p_y); | |
36fed23c | 268 | make_root_and_link(p_nd); |
2548203e | 269 | PB_DS_ASSERT_VALID((*this)) |
270 | } | |
36fed23c | 271 | |
272 | PB_DS_CLASS_T_DEC | |
273 | inline void | |
274 | PB_DS_CLASS_C_DEC:: | |
275 | update_max(node_pointer p_nd) | |
276 | { | |
e4bb1925 | 277 | if (m_p_max == 0 || Cmp_Fn::operator()(m_p_max->m_value, p_nd->m_value)) |
36fed23c | 278 | m_p_max = p_nd; |
279 | } | |
280 |