]>
Commit | Line | Data |
---|---|---|
4569a895 AT |
1 | // -*- C++ -*- |
2 | ||
7adcbafe | 3 | // Copyright (C) 2005-2022 Free Software Foundation, Inc. |
4569a895 AT |
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 | |
748086b7 | 8 | // Foundation; either version 3, or (at your option) any later |
4569a895 AT |
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 | ||
748086b7 JJ |
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. | |
4569a895 | 19 | |
748086b7 JJ |
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/>. | |
4569a895 AT |
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 | /** | |
a345e45d | 37 | * @file pat_trie_/rotate_fn_imps.hpp |
4569a895 AT |
38 | * Contains imps for rotating nodes. |
39 | */ | |
40 | ||
574dfb67 JW |
41 | #ifdef PB_DS_CLASS_C_DEC |
42 | ||
4569a895 AT |
43 | PB_DS_CLASS_T_DEC |
44 | inline void | |
45 | PB_DS_CLASS_C_DEC:: | |
46 | rotate_left(node_pointer p_x) | |
47 | { | |
48 | node_pointer p_y = p_x->m_p_right; | |
4569a895 AT |
49 | p_x->m_p_right = p_y->m_p_left; |
50 | ||
8fc81078 | 51 | if (p_y->m_p_left != 0) |
4569a895 AT |
52 | p_y->m_p_left->m_p_parent = p_x; |
53 | ||
54 | p_y->m_p_parent = p_x->m_p_parent; | |
4569a895 AT |
55 | if (p_x == m_p_head->m_p_parent) |
56 | m_p_head->m_p_parent = p_y; | |
57 | else if (p_x == p_x->m_p_parent->m_p_left) | |
58 | p_x->m_p_parent->m_p_left = p_y; | |
59 | else | |
60 | p_x->m_p_parent->m_p_right = p_y; | |
61 | ||
62 | p_y->m_p_left = p_x; | |
63 | p_x->m_p_parent = p_y; | |
64 | ||
47bea7b8 BK |
65 | _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_x);) |
66 | _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_y);) | |
4569a895 | 67 | |
a345e45d BK |
68 | apply_update(p_x, (Node_Update*)this); |
69 | apply_update(p_x->m_p_parent, (Node_Update*)this); | |
4569a895 AT |
70 | } |
71 | ||
72 | PB_DS_CLASS_T_DEC | |
73 | inline void | |
74 | PB_DS_CLASS_C_DEC:: | |
75 | rotate_right(node_pointer p_x) | |
76 | { | |
77 | node_pointer p_y = p_x->m_p_left; | |
4569a895 AT |
78 | p_x->m_p_left = p_y->m_p_right; |
79 | ||
8fc81078 | 80 | if (p_y->m_p_right != 0) |
4569a895 AT |
81 | p_y->m_p_right->m_p_parent = p_x; |
82 | ||
83 | p_y->m_p_parent = p_x->m_p_parent; | |
4569a895 AT |
84 | if (p_x == m_p_head->m_p_parent) |
85 | m_p_head->m_p_parent = p_y; | |
86 | else if (p_x == p_x->m_p_parent->m_p_right) | |
87 | p_x->m_p_parent->m_p_right = p_y; | |
88 | else | |
89 | p_x->m_p_parent->m_p_left = p_y; | |
90 | ||
91 | p_y->m_p_right = p_x; | |
92 | p_x->m_p_parent = p_y; | |
93 | ||
47bea7b8 BK |
94 | _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_x);) |
95 | _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_y);) | |
4569a895 | 96 | |
a345e45d BK |
97 | apply_update(p_x, (Node_Update*)this); |
98 | apply_update(p_x->m_p_parent, (Node_Update*)this); | |
4569a895 AT |
99 | } |
100 | ||
101 | PB_DS_CLASS_T_DEC | |
102 | inline void | |
103 | PB_DS_CLASS_C_DEC:: | |
104 | rotate_parent(node_pointer p_nd) | |
105 | { | |
106 | node_pointer p_parent = p_nd->m_p_parent; | |
4569a895 AT |
107 | if (p_nd == p_parent->m_p_left) |
108 | rotate_right(p_parent); | |
109 | else | |
110 | rotate_left(p_parent); | |
47bea7b8 BK |
111 | _GLIBCXX_DEBUG_ASSERT(p_parent->m_p_parent = p_nd); |
112 | _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_left == p_parent || p_nd->m_p_right == p_parent); | |
4569a895 AT |
113 | } |
114 | ||
115 | PB_DS_CLASS_T_DEC | |
116 | inline void | |
117 | PB_DS_CLASS_C_DEC:: | |
5e11f978 | 118 | apply_update(node_pointer /*p_nd*/, __gnu_pbds::null_node_update* /*p_update*/) |
4569a895 AT |
119 | { } |
120 | ||
121 | PB_DS_CLASS_T_DEC | |
122 | template<typename Node_Update_> | |
123 | inline void | |
124 | PB_DS_CLASS_C_DEC:: | |
125 | apply_update(node_pointer p_nd, Node_Update_* p_update) | |
126 | { | |
8fc81078 PC |
127 | p_update->operator()(& PB_DS_V2F(p_nd->m_value),(p_nd->m_p_left == 0) ? |
128 | 0 : | |
129 | & PB_DS_V2F(p_nd->m_p_left->m_value),(p_nd->m_p_right == 0) ? | |
130 | 0 : | |
4569a895 AT |
131 | & PB_DS_V2F(p_nd->m_p_right->m_value)); |
132 | } | |
133 | ||
134 | PB_DS_CLASS_T_DEC | |
135 | template<typename Node_Update_> | |
136 | inline void | |
137 | PB_DS_CLASS_C_DEC:: | |
138 | update_to_top(node_pointer p_nd, Node_Update_* p_update) | |
139 | { | |
140 | while (p_nd != m_p_head) | |
141 | { | |
142 | apply_update(p_nd, p_update); | |
4569a895 AT |
143 | p_nd = p_nd->m_p_parent; |
144 | } | |
145 | } | |
146 | ||
147 | PB_DS_CLASS_T_DEC | |
148 | inline void | |
149 | PB_DS_CLASS_C_DEC:: | |
5e11f978 | 150 | update_to_top(node_pointer /*p_nd*/, __gnu_pbds::null_node_update* /*p_update*/) |
4569a895 AT |
151 | { } |
152 | ||
574dfb67 | 153 | #endif |