libstdc++: find_fn_imps.hpp Source File

libstdc++

list_update_map_/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 list_update_map_/find_fn_imps.hpp
38 * Contains implementations of lu_map_.
39 */
40
41#ifdef PB_DS_CLASS_C_DEC
42
43PB_DS_CLASS_T_DEC
44inline typename PB_DS_CLASS_C_DEC::entry_pointer
45PB_DS_CLASS_C_DEC::
46find_imp(key_const_reference r_key) const
47{
48 if (m_p_l == 0)
49 return 0;
50 if (s_eq_fn(r_key, PB_DS_V2F(m_p_l->m_value)))
51 {
52 apply_update(m_p_l, s_metadata_type_indicator);
53 PB_DS_CHECK_KEY_EXISTS(r_key)
54 return m_p_l;
55 }
56
57 entry_pointer p_l = m_p_l;
58 while (p_l->m_p_next != 0)
59 {
60 entry_pointer p_next = p_l->m_p_next;
61 if (s_eq_fn(r_key, PB_DS_V2F(p_next->m_value)))
62 {
63 if (apply_update(p_next, s_metadata_type_indicator))
64 {
65 p_l->m_p_next = p_next->m_p_next;
66 p_next->m_p_next = m_p_l;
67 m_p_l = p_next;
68 return m_p_l;
69 }
70 return p_next;
71 }
72 else
73 p_l = p_next;
74 }
75
76 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
77 return 0;
78}
79
80PB_DS_CLASS_T_DEC
81template<typename Metadata>
82inline bool
83PB_DS_CLASS_C_DEC::
84apply_update(entry_pointer p_l, type_to_type<Metadata>)
85{ return s_update_policy(p_l->m_update_metadata); }
86
87PB_DS_CLASS_T_DEC
88inline bool
89PB_DS_CLASS_C_DEC::
90apply_update(entry_pointer, type_to_type<null_type>)
91{ return s_update_policy(s_null_type); }
92
93#endif