3 // Copyright (C) 2005, 2006, 2009 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 terms
7 // of the GNU General Public License as published by the Free Software
8 // Foundation; either version 3, or (at your option) any later
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.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
27 // Permission to use, copy, modify, sell, and distribute this software
28 // is hereby granted without fee, provided that the above copyright
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32 // representation about the suitability of this software for any
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37 * @file prefix_search_node_update_imp.hpp
38 * Contains an implementation of prefix_search_node_update.
43 typename
PB_DS_CLASS_C_DEC::const_iterator
,
44 typename
PB_DS_CLASS_C_DEC::const_iterator
>
46 prefix_range(const_key_reference r_key
) const
48 const e_access_traits
& r_traits
= get_e_access_traits();
51 r_traits
.begin(r_key
),
52 r_traits
.end(r_key
)));
57 typename
PB_DS_CLASS_C_DEC::iterator
,
58 typename
PB_DS_CLASS_C_DEC::iterator
>
60 prefix_range(const_key_reference r_key
)
63 get_e_access_traits().begin(r_key
),
64 get_e_access_traits().end(r_key
)));
69 typename
PB_DS_CLASS_C_DEC::const_iterator
,
70 typename
PB_DS_CLASS_C_DEC::const_iterator
>
72 prefix_range(typename
e_access_traits::const_iterator b
, typename
e_access_traits::const_iterator e
) const
74 const std::pair
<iterator
, iterator
> non_const_ret
=
75 const_cast<PB_DS_CLASS_C_DEC
* >(this)->prefix_range(b
, e
);
77 return (std::make_pair(
78 const_iterator(non_const_ret
.first
),
79 const_iterator(non_const_ret
.second
)));
84 typename
PB_DS_CLASS_C_DEC::iterator
,
85 typename
PB_DS_CLASS_C_DEC::iterator
>
87 prefix_range(typename
e_access_traits::const_iterator b
, typename
e_access_traits::const_iterator e
)
89 Node_Iterator nd_it
= node_begin();
90 Node_Iterator end_nd_it
= node_end();
92 const e_access_traits
& r_traits
=
93 get_e_access_traits();
95 const size_type given_range_length
= std::distance(b
, e
);
99 if (nd_it
== end_nd_it
)
100 return (std::make_pair(end(), end()));
102 const size_type common_range_length
=
103 PB_DS_BASE_C_DEC::common_prefix_len(nd_it
, b
, e
, r_traits
);
105 if (common_range_length
>= given_range_length
)
107 iterator ret_b
= leftmost_it(nd_it
);
109 iterator ret_e
= rightmost_it(nd_it
);
111 return (std::make_pair(ret_b
, ++ret_e
));
114 nd_it
= next_child(nd_it
, b
, e
, end_nd_it
, r_traits
);
119 typename
PB_DS_CLASS_C_DEC::node_iterator
121 next_child(node_iterator nd_it
, typename
e_access_traits::const_iterator b
, typename
e_access_traits::const_iterator e
, node_iterator end_nd_it
, const e_access_traits
& r_traits
)
123 const size_type num_children
= nd_it
.num_children();
125 node_iterator ret
= end_nd_it
;
127 size_type max_length
= 0;
129 for (size_type i
= 0; i
< num_children
; ++i
)
131 node_iterator pot
= nd_it
.get_child(i
);
133 const size_type common_range_length
=
134 PB_DS_BASE_C_DEC::common_prefix_len( pot
, b
, e
, r_traits
);
136 if (common_range_length
> max_length
)
140 max_length
= common_range_length
;
150 operator()(node_iterator
/*nd_it*/, const_node_iterator
/*end_nd_it*/) const