1 // -*- C++ -*-
2
3 // Copyright (C) 2005-2021 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 splay_tree_/find_fn_imps.hpp
38 * Contains an implementation class for splay_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_iterator
45 PB_DS_CLASS_C_DEC::
find(key_const_reference r_key)46 find(key_const_reference r_key)
47 {
48 node_pointer p_found = find_imp(r_key);
49 if (p_found != base_type::m_p_head)
50 splay(p_found);
51 return point_iterator(p_found);
52 }
53
54 PB_DS_CLASS_T_DEC
55 inline typename PB_DS_CLASS_C_DEC::point_const_iterator
56 PB_DS_CLASS_C_DEC::
find(key_const_reference r_key) const57 find(key_const_reference r_key) const
58 {
59 const node_pointer p_found = find_imp(r_key);
60 if (p_found != base_type::m_p_head)
61 const_cast<PB_DS_CLASS_C_DEC* >(this)->splay(p_found);
62 return point_iterator(p_found);
63 }
64
65 PB_DS_CLASS_T_DEC
66 inline typename PB_DS_CLASS_C_DEC::node_pointer
67 PB_DS_CLASS_C_DEC::
find_imp(key_const_reference r_key)68 find_imp(key_const_reference r_key)
69 {
70 _GLIBCXX_DEBUG_ONLY(base_type::structure_only_assert_valid(__FILE__,
71 __LINE__);)
72 node_pointer p_nd = base_type::m_p_head->m_p_parent;
73 while (p_nd != 0)
74 if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
75 {
76 if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
77 return p_nd;
78 p_nd = p_nd->m_p_left;
79 }
80 else
81 p_nd = p_nd->m_p_right;
82 return base_type::m_p_head;
83 }
84
85 PB_DS_CLASS_T_DEC
86 inline const typename PB_DS_CLASS_C_DEC::node_pointer
87 PB_DS_CLASS_C_DEC::
find_imp(key_const_reference r_key) const88 find_imp(key_const_reference r_key) const
89 {
90 PB_DS_ASSERT_VALID((*this))
91 node_pointer p_nd = base_type::m_p_head->m_p_parent;
92 while (p_nd != 0)
93 if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
94 {
95 if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
96 return p_nd;
97 p_nd = p_nd->m_p_left;
98 }
99 else
100 p_nd = p_nd->m_p_right;
101 return base_type::m_p_head;
102 }
103 #endif
104