3 // Copyright (C) 2005 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
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
30 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
32 // Permission to use, copy, modify, sell, and distribute this software
33 // is hereby granted without fee, provided that the above copyright
34 // notice appears in all copies, and that both that copyright notice and
35 // this permission notice appear in supporting documentation. None of
36 // the above authors, nor IBM Haifa Research Laboratories, make any
37 // representation about the suitability of this software for any
38 // purpose. It is provided "as is" without express or implied warranty.
41 * @file node_iterators.hpp
42 * Contains an implementation class for ov_tree_.
45 class const_node_iterator
50 typedef trivial_iterator_tag iterator_category
;
52 typedef trivial_iterator_difference_type difference_type
;
54 typedef const_iterator value_type
;
56 typedef const_iterator
* pointer
;
58 typedef const_iterator
* const_pointer
;
60 typedef const_iterator
& reference
;
62 typedef const iterator
& const_reference
;
66 const_node_iterator(value_pointer p_nd
= NULL
, value_pointer p_begin_nd
= NULL
, value_pointer p_end_nd
= NULL
) : m_p_value(p_nd
),
67 m_p_begin_value(p_begin_nd
),
68 m_p_end_value(p_end_nd
)
77 inline const_node_iterator
80 if (m_p_begin_value
== m_p_value
)
81 return (const_node_iterator(m_p_begin_value
, m_p_begin_value
, m_p_begin_value
));
83 return (const_node_iterator(
84 mid_pointer(m_p_begin_value
, m_p_value
),
89 inline const_node_iterator
92 if (m_p_value
== m_p_end_value
)
93 return (const_node_iterator(m_p_end_value
, m_p_end_value
, m_p_end_value
));
95 return (const_node_iterator(
96 mid_pointer(m_p_value
+ 1, m_p_end_value
),
102 operator==(const const_node_iterator
& r_other
) const
104 const bool is_end
= m_p_begin_value
== m_p_end_value
;
105 const bool is_other_end
= r_other
.m_p_begin_value
== r_other
.m_p_end_value
;
108 return (is_other_end
);
113 if (r_other
.m_p_begin_value
== r_other
.m_p_end_value
)
114 return (m_p_begin_value
== m_p_end_value
);
116 return (m_p_value
== r_other
.m_p_value
);
120 operator!=(const const_node_iterator
& r_other
) const
122 return (!operator==(r_other
));
126 friend class PB_ASSOC_CLASS_C_DEC
;
129 value_pointer m_p_value
;
130 value_pointer m_p_begin_value
;
131 value_pointer m_p_end_value
;
134 class node_iterator
:
135 public const_node_iterator
141 node_iterator(value_pointer p_nd
= NULL
, value_pointer p_begin_nd
= NULL
, value_pointer p_end_nd
= NULL
) : const_node_iterator(p_nd
, p_begin_nd
, p_end_nd
)
147 return (iterator(const_node_iterator::m_p_value
));
153 if (const_node_iterator::m_p_begin_value
== const_node_iterator::m_p_value
)
154 return (node_iterator(const_node_iterator::m_p_begin_value
, const_node_iterator::m_p_begin_value
, const_node_iterator::m_p_begin_value
));
156 return (node_iterator(
157 mid_pointer(const_node_iterator::m_p_begin_value
, const_node_iterator::m_p_value
),
158 const_node_iterator::m_p_begin_value
,
159 const_node_iterator::m_p_value
));
165 if (const_node_iterator::m_p_value
== const_node_iterator::m_p_end_value
)
166 return (node_iterator(const_node_iterator::m_p_end_value
, const_node_iterator::m_p_end_value
, const_node_iterator::m_p_end_value
));
168 return (node_iterator(
169 mid_pointer(const_node_iterator::m_p_value
+ 1, const_node_iterator::m_p_end_value
),
170 const_node_iterator::m_p_value
+ 1,
171 const_node_iterator::m_p_end_value
));
176 friend class PB_ASSOC_CLASS_C_DEC
;