libstdc++: find_fn_imps.hpp Source File

libstdc++

splay_tree_/find_fn_imps.hpp
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1// -*- C++ -*-
2
3// Copyright (C) 2005-2026 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
43PB_DS_CLASS_T_DEC
44inline typename PB_DS_CLASS_C_DEC::point_iterator
45PB_DS_CLASS_C_DEC::
46find(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
54PB_DS_CLASS_T_DEC
55inline typename PB_DS_CLASS_C_DEC::point_const_iterator
56PB_DS_CLASS_C_DEC::
57find(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
65PB_DS_CLASS_T_DEC
66inline typename PB_DS_CLASS_C_DEC::node_pointer
67PB_DS_CLASS_C_DEC::
68find_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
85PB_DS_CLASS_T_DEC
86inline const typename PB_DS_CLASS_C_DEC::node_pointer
87PB_DS_CLASS_C_DEC::
88find_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