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 a pairing heap.
45 */
46
47PB_DS_CLASS_T_DEC
48inline typename PB_DS_CLASS_C_DEC::point_iterator
49PB_DS_CLASS_C_DEC::
50push(const_reference r_val)
51{
52  _GLIBCXX_DEBUG_ONLY(assert_valid();)
53
54    node_pointer p_new_nd = base_type::get_new_node_for_insert(r_val);
55
56  push_imp(p_new_nd);
57
58  _GLIBCXX_DEBUG_ONLY(assert_valid();)
59
60    return point_iterator(p_new_nd);
61}
62
63PB_DS_CLASS_T_DEC
64inline void
65PB_DS_CLASS_C_DEC::
66push_imp(node_pointer p_nd)
67{
68  p_nd->m_p_l_child = NULL;
69
70  if (base_type::m_p_root == NULL)
71    {
72      p_nd->m_p_next_sibling = p_nd->m_p_prev_or_parent = NULL;
73
74      base_type::m_p_root = p_nd;
75    }
76  else if (Cmp_Fn::operator()(base_type::m_p_root->m_value, p_nd->m_value))
77    {
78      p_nd->m_p_next_sibling = p_nd->m_p_prev_or_parent = NULL;
79
80      base_type::make_child_of(base_type::m_p_root, p_nd);
81      _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(p_nd, false));
82
83      base_type::m_p_root = p_nd;
84    }
85  else
86    {
87      base_type::make_child_of(p_nd, base_type::m_p_root);
88      _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(base_type::m_p_root, false));
89    }
90}
91
92PB_DS_CLASS_T_DEC
93void
94PB_DS_CLASS_C_DEC::
95modify(point_iterator it, const_reference r_new_val)
96{
97  _GLIBCXX_DEBUG_ONLY(assert_valid();)
98
99    remove_node(it.m_p_nd);
100
101  it.m_p_nd->m_value = r_new_val;
102
103  push_imp(it.m_p_nd);
104
105  _GLIBCXX_DEBUG_ONLY(assert_valid();)
106    }
107
108