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4569a895 AT |
1 | // -*- C++ -*- |
2 | ||
7adcbafe | 3 | // Copyright (C) 2005-2022 Free Software Foundation, Inc. |
4569a895 AT |
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 | |
748086b7 | 8 | // Foundation; either version 3, or (at your option) any later |
4569a895 AT |
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 | ||
748086b7 JJ |
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. | |
4569a895 | 19 | |
748086b7 JJ |
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/>. | |
4569a895 AT |
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 | /** | |
a345e45d | 37 | * @file ov_tree_map_/split_join_fn_imps.hpp |
4569a895 AT |
38 | * Contains an implementation class for ov_tree_. |
39 | */ | |
40 | ||
574dfb67 JW |
41 | #ifdef PB_DS_CLASS_C_DEC |
42 | ||
4569a895 AT |
43 | PB_DS_CLASS_T_DEC |
44 | void | |
45 | PB_DS_CLASS_C_DEC:: | |
a345e45d | 46 | split(key_const_reference r_key, PB_DS_CLASS_C_DEC& other) |
4569a895 | 47 | { |
f5886803 FD |
48 | PB_DS_ASSERT_VALID((*this)) |
49 | PB_DS_ASSERT_VALID(other) | |
4569a895 | 50 | |
1b24692f BK |
51 | if (m_size == 0) |
52 | { | |
53 | other.clear(); | |
1b24692f BK |
54 | return; |
55 | } | |
4569a895 AT |
56 | |
57 | if (Cmp_Fn::operator()(r_key, PB_DS_V2F(*begin()))) | |
58 | { | |
59 | value_swap(other); | |
f5886803 FD |
60 | PB_DS_ASSERT_VALID((*this)) |
61 | PB_DS_ASSERT_VALID(other) | |
1b24692f | 62 | return; |
4569a895 AT |
63 | } |
64 | ||
1b24692f | 65 | if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(*(end() - 1)))) |
4569a895 | 66 | { |
1b24692f | 67 | return; |
4569a895 AT |
68 | } |
69 | ||
70 | if (m_size == 1) | |
71 | { | |
72 | value_swap(other); | |
f5886803 FD |
73 | PB_DS_ASSERT_VALID((*this)) |
74 | PB_DS_ASSERT_VALID(other) | |
1b24692f | 75 | return; |
4569a895 AT |
76 | } |
77 | ||
1b24692f | 78 | iterator it = upper_bound(r_key); |
4569a895 | 79 | PB_DS_CLASS_C_DEC new_other(other, other); |
4569a895 | 80 | new_other.copy_from_ordered_range(it, end()); |
a345e45d | 81 | PB_DS_CLASS_C_DEC new_this(*this, *this); |
4569a895 AT |
82 | new_this.copy_from_ordered_range(begin(), it); |
83 | ||
84 | // No exceptions from this point. | |
a345e45d BK |
85 | other.update(other.node_begin(), (node_update*)(&other)); |
86 | update(node_begin(), (node_update*)this); | |
4569a895 | 87 | other.value_swap(new_other); |
4569a895 | 88 | value_swap(new_this); |
f5886803 FD |
89 | PB_DS_ASSERT_VALID((*this)) |
90 | PB_DS_ASSERT_VALID(other) | |
1b24692f | 91 | } |
4569a895 AT |
92 | |
93 | PB_DS_CLASS_T_DEC | |
94 | void | |
95 | PB_DS_CLASS_C_DEC:: | |
96 | join(PB_DS_CLASS_C_DEC& other) | |
97 | { | |
f5886803 FD |
98 | PB_DS_ASSERT_VALID((*this)) |
99 | PB_DS_ASSERT_VALID(other) | |
1b24692f BK |
100 | if (other.m_size == 0) |
101 | return; | |
4569a895 AT |
102 | |
103 | if (m_size == 0) | |
104 | { | |
105 | value_swap(other); | |
f5886803 FD |
106 | PB_DS_ASSERT_VALID((*this)) |
107 | PB_DS_ASSERT_VALID(other) | |
4569a895 AT |
108 | return; |
109 | } | |
110 | ||
1b24692f | 111 | const bool greater = Cmp_Fn::operator()(PB_DS_V2F(*(end() - 1)), |
4569a895 AT |
112 | PB_DS_V2F(*other.begin())); |
113 | ||
1b24692f | 114 | const bool lesser = Cmp_Fn::operator()(PB_DS_V2F(*(other.end() - 1)), |
4569a895 AT |
115 | PB_DS_V2F(*begin())); |
116 | ||
8fafc2d3 BK |
117 | if (!greater && !lesser) |
118 | __throw_join_error(); | |
4569a895 | 119 | |
1b24692f | 120 | PB_DS_CLASS_C_DEC new_this(*this, *this); |
4569a895 AT |
121 | |
122 | if (greater) | |
a345e45d | 123 | new_this.copy_from_ordered_range(begin(), end(), |
1b24692f | 124 | other.begin(), other.end()); |
4569a895 | 125 | else |
1b24692f BK |
126 | new_this.copy_from_ordered_range(other.begin(), other.end(), |
127 | begin(), end()); | |
4569a895 AT |
128 | |
129 | // No exceptions from this point. | |
1b24692f | 130 | value_swap(new_this); |
4569a895 | 131 | other.clear(); |
f5886803 FD |
132 | PB_DS_ASSERT_VALID((*this)) |
133 | PB_DS_ASSERT_VALID(other) | |
1b24692f | 134 | } |
574dfb67 | 135 | #endif |