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 find_fn_imps.hpp
44 * Contains an implementation class for splay_tree_.
45 */
46
47PB_DS_CLASS_T_DEC
48inline typename PB_DS_CLASS_C_DEC::point_iterator
49PB_DS_CLASS_C_DEC::
50find(const_key_reference r_key)
51{
52  node_pointer p_found = find_imp(r_key);
53  if (p_found != base_type::m_p_head)
54    splay(p_found);
55  return point_iterator(p_found);
56}
57
58PB_DS_CLASS_T_DEC
59inline typename PB_DS_CLASS_C_DEC::const_point_iterator
60PB_DS_CLASS_C_DEC::
61find(const_key_reference r_key) const
62{
63  const node_pointer p_found = find_imp(r_key);
64  if (p_found != base_type::m_p_head)
65    const_cast<PB_DS_CLASS_C_DEC* >(this)->splay(p_found);
66  return point_iterator(p_found);
67}
68
69PB_DS_CLASS_T_DEC
70inline typename PB_DS_CLASS_C_DEC::node_pointer
71PB_DS_CLASS_C_DEC::
72find_imp(const_key_reference r_key)
73{
74  _GLIBCXX_DEBUG_ONLY(base_type::structure_only_assert_valid();)
75  node_pointer p_nd = base_type::m_p_head->m_p_parent;
76  while (p_nd != NULL)
77    if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
78      {
79	if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
80	  return p_nd;
81	p_nd = p_nd->m_p_left;
82      }
83    else
84      p_nd = p_nd->m_p_right;
85  return base_type::m_p_head;
86}
87
88PB_DS_CLASS_T_DEC
89inline const typename PB_DS_CLASS_C_DEC::node_pointer
90PB_DS_CLASS_C_DEC::
91find_imp(const_key_reference r_key) const
92{
93  _GLIBCXX_DEBUG_ONLY(assert_valid();)
94  node_pointer p_nd = base_type::m_p_head->m_p_parent;
95  while (p_nd != NULL)
96    if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
97      {
98	if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
99	  return p_nd;
100	p_nd = p_nd->m_p_left;
101      }
102    else
103      p_nd = p_nd->m_p_right;
104  return base_type::m_p_head;
105}
106