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 split_join_fn_imps.hpp
44 * Contains an implementation class for bin_search_tree_.
45 */
46
47PB_DS_CLASS_T_DEC
48bool
49PB_DS_CLASS_C_DEC::
50join_prep(PB_DS_CLASS_C_DEC& other)
51{
52  _GLIBCXX_DEBUG_ONLY(assert_valid();)
53  _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
54  if (other.m_size == 0)
55    return false;
56
57  if (m_size == 0)
58    {
59      value_swap(other);
60      return false;
61    }
62
63  const bool greater = Cmp_Fn::operator()(PB_DS_V2F(m_p_head->m_p_right->m_value), PB_DS_V2F(other.m_p_head->m_p_left->m_value));
64
65  const bool lesser = Cmp_Fn::operator()(PB_DS_V2F(other.m_p_head->m_p_right->m_value), PB_DS_V2F(m_p_head->m_p_left->m_value));
66
67  if (!greater && !lesser)
68    __throw_join_error();
69
70  if (lesser)
71    value_swap(other);
72
73  m_size += other.m_size;
74  _GLIBCXX_DEBUG_ONLY(map_debug_base::join(other);)
75  return true;
76}
77
78PB_DS_CLASS_T_DEC
79void
80PB_DS_CLASS_C_DEC::
81join_finish(PB_DS_CLASS_C_DEC& other)
82{
83  initialize_min_max();
84  other.initialize();
85}
86
87PB_DS_CLASS_T_DEC
88bool
89PB_DS_CLASS_C_DEC::
90split_prep(const_key_reference r_key, PB_DS_CLASS_C_DEC& other)
91{
92  _GLIBCXX_DEBUG_ONLY(assert_valid();)
93  _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
94  other.clear();
95
96  if (m_size == 0)
97    {
98      _GLIBCXX_DEBUG_ONLY(assert_valid();)
99      _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
100      return false;
101    }
102
103  if (Cmp_Fn::operator()(r_key, PB_DS_V2F(m_p_head->m_p_left->m_value)))
104    {
105      value_swap(other);
106      _GLIBCXX_DEBUG_ONLY(assert_valid();)
107      _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
108      return false;
109    }
110
111  if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(m_p_head->m_p_right->m_value)))
112    {
113      _GLIBCXX_DEBUG_ONLY(assert_valid();)
114      _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
115      return false;
116    }
117
118  if (m_size == 1)
119    {
120      value_swap(other);
121      _GLIBCXX_DEBUG_ONLY(assert_valid();)
122      _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
123      return false;
124    }
125
126  _GLIBCXX_DEBUG_ONLY(map_debug_base::split(r_key,(Cmp_Fn& )(*this), other);)
127  return true;
128}
129
130PB_DS_CLASS_T_DEC
131void
132PB_DS_CLASS_C_DEC::
133split_finish(PB_DS_CLASS_C_DEC& other)
134{
135  other.initialize_min_max();
136  other.m_size = std::distance(other.begin(), other.end());
137  m_size -= other.m_size;
138  initialize_min_max();
139  _GLIBCXX_DEBUG_ONLY(assert_valid();)
140  _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
141}
142
143PB_DS_CLASS_T_DEC
144typename PB_DS_CLASS_C_DEC::size_type
145PB_DS_CLASS_C_DEC::
146recursive_count(node_pointer p) const
147{
148  if (p == NULL)
149    return 0;
150  return 1 + recursive_count(p->m_p_left) + recursive_count(p->m_p_right);
151}
152
153