libstdc++

list_update_map_/find_fn_imps.hpp
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1 // -*- C++ -*-
2
3 // Copyright (C) 2005-2013 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 PB_DS_CLASS_T_DEC
42 inline typename PB_DS_CLASS_C_DEC::entry_pointer
43 PB_DS_CLASS_C_DEC::
44 find_imp(key_const_reference r_key) const
45 {
46 if (m_p_l == 0)
47 return 0;
48 if (s_eq_fn(r_key, PB_DS_V2F(m_p_l->m_value)))
49 {
50 apply_update(m_p_l, s_metadata_type_indicator);
51 PB_DS_CHECK_KEY_EXISTS(r_key)
52 return m_p_l;
53 }
54
55 entry_pointer p_l = m_p_l;
56 while (p_l->m_p_next != 0)
57 {
58 entry_pointer p_next = p_l->m_p_next;
59 if (s_eq_fn(r_key, PB_DS_V2F(p_next->m_value)))
60 {
61 if (apply_update(p_next, s_metadata_type_indicator))
62 {
63 p_l->m_p_next = p_next->m_p_next;
64 p_next->m_p_next = m_p_l;
65 m_p_l = p_next;
66 return m_p_l;
67 }
68 return p_next;
69 }
70 else
71 p_l = p_next;
72 }
73
74 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
75 return 0;
76 }
77
78 PB_DS_CLASS_T_DEC
79 template<typename Metadata>
80 inline bool
81 PB_DS_CLASS_C_DEC::
82 apply_update(entry_pointer p_l, type_to_type<Metadata>)
83 { return s_update_policy(p_l->m_update_metadata); }
84
85 PB_DS_CLASS_T_DEC
86 inline bool
87 PB_DS_CLASS_C_DEC::
88 apply_update(entry_pointer, type_to_type<null_type>)
89 { return s_update_policy(s_null_type); }
90