libstdc++
thin_heap_/split_join_fn_imps.hpp
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1// -*- C++ -*-
2
3// Copyright (C) 2005-2019 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 thin_heap_/split_join_fn_imps.hpp
38 * Contains an implementation for thin_heap_.
39 */
40
41PB_DS_CLASS_T_DEC
42template<typename Pred>
43void
44PB_DS_CLASS_C_DEC::
45split(Pred pred, PB_DS_CLASS_C_DEC& other)
46{
47 PB_DS_ASSERT_VALID((*this))
48 PB_DS_ASSERT_VALID(other)
49
50 other.clear();
51 if (base_type::empty())
52 {
53 PB_DS_ASSERT_VALID((*this))
54 PB_DS_ASSERT_VALID(other)
55 return;
56 }
57
58 base_type::to_linked_list();
59 node_pointer p_out = base_type::prune(pred);
60
61 while (p_out != 0)
62 {
63 _GLIBCXX_DEBUG_ASSERT(base_type::m_size > 0);
64 --base_type::m_size;
65 ++other.m_size;
66 node_pointer p_next = p_out->m_p_next_sibling;
67 other.make_root_and_link(p_out);
68 p_out = p_next;
69 }
70
71 PB_DS_ASSERT_VALID(other)
72 node_pointer p_cur = base_type::m_p_root;
73 m_p_max = 0;
74 base_type::m_p_root = 0;
75 while (p_cur != 0)
76 {
77 node_pointer p_next = p_cur->m_p_next_sibling;
78 make_root_and_link(p_cur);
79 p_cur = p_next;
80 }
81
82 PB_DS_ASSERT_VALID((*this))
83 PB_DS_ASSERT_VALID(other)
84}
85
86PB_DS_CLASS_T_DEC
87inline void
88PB_DS_CLASS_C_DEC::
89join(PB_DS_CLASS_C_DEC& other)
90{
91 PB_DS_ASSERT_VALID((*this))
92 PB_DS_ASSERT_VALID(other)
93
94 node_pointer p_other = other.m_p_root;
95 while (p_other != 0)
96 {
97 node_pointer p_next = p_other->m_p_next_sibling;
98 make_root_and_link(p_other);
99 p_other = p_next;
100 }
101 base_type::m_size += other.m_size;
102 other.m_p_root = 0;
103 other.m_size = 0;
104 other.m_p_max = 0;
105
106 PB_DS_ASSERT_VALID((*this))
107 PB_DS_ASSERT_VALID(other)
108}