3 // Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
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
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.
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.
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/>.
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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
37 * @file split_join_fn_imps.hpp
38 * Contains an implementation class for a pairing heap.
42 template<typename Pred
>
45 split(Pred pred
, PB_DS_CLASS_C_DEC
& other
)
47 _GLIBCXX_DEBUG_ONLY(assert_valid();)
48 _GLIBCXX_DEBUG_ONLY(other
.assert_valid();)
52 if (base_type::empty())
54 _GLIBCXX_DEBUG_ONLY(assert_valid();)
55 _GLIBCXX_DEBUG_ONLY(other
.assert_valid();)
60 base_type::to_linked_list();
62 node_pointer p_out
= base_type::prune(pred
);
66 _GLIBCXX_DEBUG_ASSERT(base_type::m_size
> 0);
71 node_pointer p_next
= p_out
->m_p_next_sibling
;
73 p_out
->m_p_l_child
= p_out
->m_p_next_sibling
= p_out
->m_p_prev_or_parent
= 0;
75 other
.push_imp(p_out
);
80 _GLIBCXX_DEBUG_ONLY(other
.assert_valid();)
82 node_pointer p_cur
= base_type::m_p_root
;
84 base_type::m_p_root
= 0;
88 node_pointer p_next
= p_cur
->m_p_next_sibling
;
90 p_cur
->m_p_l_child
= p_cur
->m_p_next_sibling
= p_cur
->m_p_prev_or_parent
= 0;
97 _GLIBCXX_DEBUG_ONLY(assert_valid();)
98 _GLIBCXX_DEBUG_ONLY(other
.assert_valid();)
104 join(PB_DS_CLASS_C_DEC
& other
)
106 _GLIBCXX_DEBUG_ONLY(assert_valid();)
107 _GLIBCXX_DEBUG_ONLY(other
.assert_valid();)
109 if (other
.m_p_root
== 0)
111 _GLIBCXX_DEBUG_ONLY(assert_valid();)
112 _GLIBCXX_DEBUG_ONLY(other
.assert_valid();)
117 if (base_type::m_p_root
== 0)
118 base_type::m_p_root
= other
.m_p_root
;
119 else if (Cmp_Fn::operator()(base_type::m_p_root
->m_value
, other
.m_p_root
->m_value
))
121 base_type::make_child_of(base_type::m_p_root
, other
.m_p_root
);
122 _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(other
.m_p_root
, false));
124 base_type::m_p_root
= other
.m_p_root
;
128 base_type::make_child_of(other
.m_p_root
, base_type::m_p_root
);
129 _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(base_type::m_p_root
, false));
132 base_type::m_size
+= other
.m_size
;
137 _GLIBCXX_DEBUG_ONLY(assert_valid();)
138 _GLIBCXX_DEBUG_ONLY(other
.assert_valid();)