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1 | // Compatibility symbols for previous versions, list bits -*- C++ -*- |
2 | ||
99dee823 | 3 | // Copyright (C) 2011-2021 Free Software Foundation, Inc. |
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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 | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU 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 | #include <bits/move.h> | |
26 | ||
ac6d1200 | 27 | #ifdef _GLIBCXX_SHARED |
0b284728 | 28 | |
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29 | #ifndef _GLIBCXX_BEGIN_NAMESPACE_COMPAT |
30 | # define _GLIBCXX_BEGIN_NAMESPACE_COMPAT | |
31 | #endif | |
32 | ||
33 | #ifndef _GLIBCXX_END_NAMESPACE_COMPAT | |
34 | # define _GLIBCXX_END_NAMESPACE_COMPAT | |
35 | #endif | |
36 | ||
37 | namespace std _GLIBCXX_VISIBILITY(default) | |
38 | { | |
39 | _GLIBCXX_BEGIN_NAMESPACE_COMPAT | |
40 | ||
41 | struct _List_node_base | |
42 | { | |
43 | _List_node_base* _M_next; | |
44 | _List_node_base* _M_prev; | |
45 | ||
46 | void | |
47 | _M_transfer(_List_node_base * const __first, | |
d3677132 | 48 | _List_node_base * const __last) _GLIBCXX_USE_NOEXCEPT; |
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49 | |
50 | void | |
d3677132 | 51 | _M_reverse() _GLIBCXX_USE_NOEXCEPT; |
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52 | |
53 | void | |
d3677132 | 54 | _M_hook(_List_node_base * const __position) _GLIBCXX_USE_NOEXCEPT; |
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55 | |
56 | void | |
d3677132 | 57 | _M_unhook() _GLIBCXX_USE_NOEXCEPT; |
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58 | }; |
59 | ||
60 | void | |
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61 | _List_node_base:: |
62 | _M_transfer(_List_node_base * const __first, | |
63 | _List_node_base * const __last) _GLIBCXX_USE_NOEXCEPT | |
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64 | { |
65 | if (this != __last) | |
66 | { | |
67 | // Remove [first, last) from its old position. | |
68 | __last->_M_prev->_M_next = this; | |
69 | __first->_M_prev->_M_next = __last; | |
70 | this->_M_prev->_M_next = __first; | |
71 | ||
72 | // Splice [first, last) into its new position. | |
73 | _List_node_base* const __tmp = this->_M_prev; | |
74 | this->_M_prev = __last->_M_prev; | |
75 | __last->_M_prev = __first->_M_prev; | |
76 | __first->_M_prev = __tmp; | |
77 | } | |
78 | } | |
79 | ||
80 | void | |
d3677132 | 81 | _List_node_base::_M_reverse() _GLIBCXX_USE_NOEXCEPT |
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82 | { |
83 | _List_node_base* __tmp = this; | |
84 | do | |
85 | { | |
86 | std::swap(__tmp->_M_next, __tmp->_M_prev); | |
87 | ||
88 | // Old next node is now prev. | |
89 | __tmp = __tmp->_M_prev; | |
90 | } | |
91 | while (__tmp != this); | |
92 | } | |
93 | ||
94 | void | |
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95 | _List_node_base:: |
96 | _M_hook(_List_node_base* const __position) _GLIBCXX_USE_NOEXCEPT | |
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97 | { |
98 | this->_M_next = __position; | |
99 | this->_M_prev = __position->_M_prev; | |
100 | __position->_M_prev->_M_next = this; | |
101 | __position->_M_prev = this; | |
102 | } | |
103 | ||
104 | void | |
d3677132 | 105 | _List_node_base::_M_unhook() _GLIBCXX_USE_NOEXCEPT |
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106 | { |
107 | _List_node_base* const __next_node = this->_M_next; | |
108 | _List_node_base* const __prev_node = this->_M_prev; | |
109 | __prev_node->_M_next = __next_node; | |
110 | __next_node->_M_prev = __prev_node; | |
111 | } | |
112 | ||
113 | _GLIBCXX_END_NAMESPACE_COMPAT | |
114 | ||
115 | } // namespace std | |
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116 | |
117 | #endif |