1 // -*- C++ -*-
2
3 // Copyright (C) 2005, 2006 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 2, 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 // You should have received a copy of the GNU General Public License
17 // along with this library; see the file COPYING. If not, write to
18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19 // MA 02111-1307, USA.
20
21 // As a special exception, you may use this file as part of a free
22 // software library without restriction. Specifically, if other files
23 // instantiate templates or use macros or inline functions from this
24 // file, or you compile this file and link it with other files to
25 // produce an executable, this file does not by itself cause the
26 // resulting executable to be covered by the GNU General Public
27 // License. This exception does not however invalidate any other
28 // reasons why the executable file might be covered by the GNU General
29 // Public License.
30
31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
32
33 // Permission to use, copy, modify, sell, and distribute this software
34 // is hereby granted without fee, provided that the above copyright
35 // notice appears in all copies, and that both that copyright notice
36 // and this permission notice appear in supporting documentation. None
37 // of the above authors, nor IBM Haifa Research Laboratories, make any
38 // representation about the suitability of this software for any
39 // purpose. It is provided "as is" without express or implied
40 // warranty.
41
42 /**
43 * @file insert_fn_imps.hpp
44 * Contains an implementation class for left_child_next_sibling_heap_.
45 */
46
47 PB_DS_CLASS_T_DEC
48 inline typename PB_DS_CLASS_C_DEC::node_pointer
49 PB_DS_CLASS_C_DEC::
get_new_node_for_insert(const_reference r_val)50 get_new_node_for_insert(const_reference r_val)
51 {
52 return get_new_node_for_insert(r_val, s_no_throw_copies_ind);
53 }
54
55 PB_DS_CLASS_T_DEC
56 inline typename PB_DS_CLASS_C_DEC::node_pointer
57 PB_DS_CLASS_C_DEC::
get_new_node_for_insert(const_reference r_val,false_type)58 get_new_node_for_insert(const_reference r_val, false_type)
59 {
60 node_pointer p_new_nd = s_node_allocator.allocate(1);
61
62 cond_dealtor_t cond(p_new_nd);
63
64 new (const_cast<void* >(
65 static_cast<const void* >(&p_new_nd->m_value)))
66 typename node::value_type(r_val);
67
68 cond.set_no_action();
69
70 ++m_size;
71
72 return (p_new_nd);
73 }
74
75 PB_DS_CLASS_T_DEC
76 inline typename PB_DS_CLASS_C_DEC::node_pointer
77 PB_DS_CLASS_C_DEC::
get_new_node_for_insert(const_reference r_val,true_type)78 get_new_node_for_insert(const_reference r_val, true_type)
79 {
80 node_pointer p_new_nd = s_node_allocator.allocate(1);
81
82 new (const_cast<void* >(
83 static_cast<const void* >(&p_new_nd->m_value)))
84 typename node::value_type(r_val);
85
86 ++m_size;
87
88 return (p_new_nd);
89 }
90
91 PB_DS_CLASS_T_DEC
92 inline void
93 PB_DS_CLASS_C_DEC::
make_child_of(node_pointer p_nd,node_pointer p_new_parent)94 make_child_of(node_pointer p_nd, node_pointer p_new_parent)
95 {
96 _GLIBCXX_DEBUG_ASSERT(p_nd != NULL);
97 _GLIBCXX_DEBUG_ASSERT(p_new_parent != NULL);
98
99 p_nd->m_p_next_sibling = p_new_parent->m_p_l_child;
100
101 if (p_new_parent->m_p_l_child != NULL)
102 p_new_parent->m_p_l_child->m_p_prev_or_parent = p_nd;
103
104 p_nd->m_p_prev_or_parent = p_new_parent;
105
106 p_new_parent->m_p_l_child = p_nd;
107 }
108
109 PB_DS_CLASS_T_DEC
110 inline typename PB_DS_CLASS_C_DEC::node_pointer
111 PB_DS_CLASS_C_DEC::
parent(node_pointer p_nd)112 parent(node_pointer p_nd)
113 {
114 while (true)
115 {
116 node_pointer p_pot = p_nd->m_p_prev_or_parent;
117
118 if (p_pot == NULL || p_pot->m_p_l_child == p_nd)
119 return p_pot;
120
121 p_nd = p_pot;
122 }
123 }
124
125 PB_DS_CLASS_T_DEC
126 inline void
127 PB_DS_CLASS_C_DEC::
swap_with_parent(node_pointer p_nd,node_pointer p_parent)128 swap_with_parent(node_pointer p_nd, node_pointer p_parent)
129 {
130 if (p_parent == m_p_root)
131 m_p_root = p_nd;
132
133 _GLIBCXX_DEBUG_ASSERT(p_nd != NULL);
134 _GLIBCXX_DEBUG_ASSERT(p_parent != NULL);
135 _GLIBCXX_DEBUG_ASSERT(parent(p_nd) == p_parent);
136
137 const bool nd_direct_child = p_parent->m_p_l_child == p_nd;
138 const bool parent_root = p_parent->m_p_prev_or_parent == NULL;
139 const bool parent_direct_child =
140 !parent_root&& p_parent->m_p_prev_or_parent->m_p_l_child == p_parent;
141
142 std::swap(p_parent->m_p_prev_or_parent, p_nd->m_p_prev_or_parent);
143 std::swap(p_parent->m_p_next_sibling, p_nd->m_p_next_sibling);
144 std::swap(p_parent->m_p_l_child, p_nd->m_p_l_child);
145 std::swap(p_parent->m_metadata, p_nd->m_metadata);
146
147 _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_l_child != NULL);
148 _GLIBCXX_DEBUG_ASSERT(p_parent->m_p_prev_or_parent != NULL);
149
150 if (p_nd->m_p_next_sibling != NULL)
151 p_nd->m_p_next_sibling->m_p_prev_or_parent = p_nd;
152
153 if (p_parent->m_p_next_sibling != NULL)
154 p_parent->m_p_next_sibling->m_p_prev_or_parent = p_parent;
155
156 if (p_parent->m_p_l_child != NULL)
157 p_parent->m_p_l_child->m_p_prev_or_parent = p_parent;
158
159 if (parent_direct_child)
160 p_nd->m_p_prev_or_parent->m_p_l_child = p_nd;
161 else if (!parent_root)
162 p_nd->m_p_prev_or_parent->m_p_next_sibling = p_nd;
163
164 if (!nd_direct_child)
165 {
166 p_nd->m_p_l_child->m_p_prev_or_parent = p_nd;
167
168 p_parent->m_p_prev_or_parent->m_p_next_sibling = p_parent;
169 }
170 else
171 {
172 _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_l_child == p_nd);
173 _GLIBCXX_DEBUG_ASSERT(p_parent->m_p_prev_or_parent == p_parent);
174
175 p_nd->m_p_l_child = p_parent;
176 p_parent->m_p_prev_or_parent = p_nd;
177 }
178
179 _GLIBCXX_DEBUG_ASSERT(parent(p_parent) == p_nd);
180 }
181
182