libstdc++
bin_search_tree_/find_fn_imps.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2022 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
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34 // warranty.
35 
36 /**
37  * @file bin_search_tree_/find_fn_imps.hpp
38  * Contains an implementation class for bin_search_tree_.
39  */
40 
41 #ifdef PB_DS_CLASS_C_DEC
42 
43 PB_DS_CLASS_T_DEC
44 inline typename PB_DS_CLASS_C_DEC::point_const_iterator
45 PB_DS_CLASS_C_DEC::
46 lower_bound(key_const_reference r_key) const
47 {
48  node_pointer p_pot = m_p_head;
49  node_pointer p_nd = m_p_head->m_p_parent;
50 
51  while (p_nd != 0)
52  if (Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
53  p_nd = p_nd->m_p_right;
54  else
55  {
56  p_pot = p_nd;
57  p_nd = p_nd->m_p_left;
58  }
59  return iterator(p_pot);
60 }
61 
62 PB_DS_CLASS_T_DEC
63 inline typename PB_DS_CLASS_C_DEC::point_iterator
64 PB_DS_CLASS_C_DEC::
65 lower_bound(key_const_reference r_key)
66 {
67  node_pointer p_pot = m_p_head;
68  node_pointer p_nd = m_p_head->m_p_parent;
69 
70  while (p_nd != 0)
71  if (Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
72  p_nd = p_nd->m_p_right;
73  else
74  {
75  p_pot = p_nd;
76  p_nd = p_nd->m_p_left;
77  }
78  return iterator(p_pot);
79 }
80 
81 PB_DS_CLASS_T_DEC
82 inline typename PB_DS_CLASS_C_DEC::point_const_iterator
83 PB_DS_CLASS_C_DEC::
84 upper_bound(key_const_reference r_key) const
85 {
86  node_pointer p_pot = m_p_head;
87  node_pointer p_nd = m_p_head->m_p_parent;
88 
89  while (p_nd != 0)
90  if (Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
91  {
92  p_pot = p_nd;
93  p_nd = p_nd->m_p_left;
94  }
95  else
96  p_nd = p_nd->m_p_right;
97  return const_iterator(p_pot);
98 }
99 
100 PB_DS_CLASS_T_DEC
101 inline typename PB_DS_CLASS_C_DEC::point_iterator
102 PB_DS_CLASS_C_DEC::
103 upper_bound(key_const_reference r_key)
104 {
105  node_pointer p_pot = m_p_head;
106  node_pointer p_nd = m_p_head->m_p_parent;
107 
108  while (p_nd != 0)
109  if (Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
110  {
111  p_pot = p_nd;
112  p_nd = p_nd->m_p_left;
113  }
114  else
115  p_nd = p_nd->m_p_right;
116  return point_iterator(p_pot);
117 }
118 
119 PB_DS_CLASS_T_DEC
120 inline typename PB_DS_CLASS_C_DEC::point_iterator
121 PB_DS_CLASS_C_DEC::
122 find(key_const_reference r_key)
123 {
124  PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
125  node_pointer p_pot = m_p_head;
126  node_pointer p_nd = m_p_head->m_p_parent;
127 
128  while (p_nd != 0)
129  if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
130  {
131  p_pot = p_nd;
132  p_nd = p_nd->m_p_left;
133  }
134  else
135  p_nd = p_nd->m_p_right;
136 
137  node_pointer ret = p_pot;
138  if (p_pot != m_p_head)
139  {
140  const bool __cmp = Cmp_Fn::operator()(r_key, PB_DS_V2F(p_pot->m_value));
141  if (__cmp)
142  ret = m_p_head;
143  }
144  return point_iterator(ret);
145 }
146 
147 PB_DS_CLASS_T_DEC
148 inline typename PB_DS_CLASS_C_DEC::point_const_iterator
149 PB_DS_CLASS_C_DEC::
150 find(key_const_reference r_key) const
151 {
152  PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
153  node_pointer p_pot = m_p_head;
154  node_pointer p_nd = m_p_head->m_p_parent;
155 
156  while (p_nd != 0)
157  if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
158  {
159  p_pot = p_nd;
160  p_nd = p_nd->m_p_left;
161  }
162  else
163  p_nd = p_nd->m_p_right;
164 
165  node_pointer ret = p_pot;
166  if (p_pot != m_p_head)
167  {
168  const bool __cmp = Cmp_Fn::operator()(r_key, PB_DS_V2F(p_pot->m_value));
169  if (__cmp)
170  ret = m_p_head;
171  }
172  return point_const_iterator(ret);
173 }
174 #endif