libstdc++
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00001 // -*- C++ -*- 00002 00003 // Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the terms 00007 // of the GNU General Public License as published by the Free Software 00008 // Foundation; either version 3, or (at your option) any later 00009 // version. 00010 00011 // This library is distributed in the hope that it will be useful, but 00012 // WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 // General Public License for more details. 00015 00016 // Under Section 7 of GPL version 3, you are granted additional 00017 // permissions described in the GCC Runtime Library Exception, version 00018 // 3.1, as published by the Free Software Foundation. 00019 00020 // You should have received a copy of the GNU General Public License and 00021 // a copy of the GCC Runtime Library Exception along with this program; 00022 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 00023 // <http://www.gnu.org/licenses/>. 00024 00025 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 00026 00027 // Permission to use, copy, modify, sell, and distribute this software 00028 // is hereby granted without fee, provided that the above copyright 00029 // notice appears in all copies, and that both that copyright notice 00030 // and this permission notice appear in supporting documentation. None 00031 // of the above authors, nor IBM Haifa Research Laboratories, make any 00032 // representation about the suitability of this software for any 00033 // purpose. It is provided "as is" without express or implied 00034 // warranty. 00035 00036 /** 00037 * @file tree_policy/order_statistics_imp.hpp 00038 * Contains forward declarations for order_statistics_key 00039 */ 00040 00041 PB_DS_CLASS_T_DEC 00042 inline typename PB_DS_CLASS_C_DEC::iterator 00043 PB_DS_CLASS_C_DEC:: 00044 find_by_order(size_type order) 00045 { 00046 node_iterator it = node_begin(); 00047 node_iterator end_it = node_end(); 00048 00049 while (it != end_it) 00050 { 00051 node_iterator l_it = it.get_l_child(); 00052 const size_type o = (l_it == end_it)? 0 : l_it.get_metadata(); 00053 00054 if (order == o) 00055 return *it; 00056 else if (order < o) 00057 it = l_it; 00058 else 00059 { 00060 order -= o + 1; 00061 it = it.get_r_child(); 00062 } 00063 } 00064 00065 return base_type::end_iterator(); 00066 } 00067 00068 PB_DS_CLASS_T_DEC 00069 inline typename PB_DS_CLASS_C_DEC::const_iterator 00070 PB_DS_CLASS_C_DEC:: 00071 find_by_order(size_type order) const 00072 { return const_cast<PB_DS_CLASS_C_DEC*>(this)->find_by_order(order); } 00073 00074 PB_DS_CLASS_T_DEC 00075 inline typename PB_DS_CLASS_C_DEC::size_type 00076 PB_DS_CLASS_C_DEC:: 00077 order_of_key(key_const_reference r_key) const 00078 { 00079 node_const_iterator it = node_begin(); 00080 node_const_iterator end_it = node_end(); 00081 00082 const cmp_fn& r_cmp_fn = const_cast<PB_DS_CLASS_C_DEC*>(this)->get_cmp_fn(); 00083 size_type ord = 0; 00084 while (it != end_it) 00085 { 00086 node_const_iterator l_it = it.get_l_child(); 00087 00088 if (r_cmp_fn(r_key, this->extract_key(*(*it)))) 00089 it = l_it; 00090 else if (r_cmp_fn(this->extract_key(*(*it)), r_key)) 00091 { 00092 ord += (l_it == end_it)? 1 : 1 + l_it.get_metadata(); 00093 it = it.get_r_child(); 00094 } 00095 else 00096 { 00097 ord += (l_it == end_it)? 0 : l_it.get_metadata(); 00098 it = end_it; 00099 } 00100 } 00101 return ord; 00102 } 00103 00104 PB_DS_CLASS_T_DEC 00105 inline void 00106 PB_DS_CLASS_C_DEC:: 00107 operator()(node_iterator node_it, node_const_iterator end_nd_it) const 00108 { 00109 node_iterator l_it = node_it.get_l_child(); 00110 const size_type l_rank = (l_it == end_nd_it) ? 0 : l_it.get_metadata(); 00111 00112 node_iterator r_it = node_it.get_r_child(); 00113 const size_type r_rank = (r_it == end_nd_it) ? 0 : r_it.get_metadata(); 00114 00115 const_cast<metadata_reference>(node_it.get_metadata())= 1 + l_rank + r_rank; 00116 } 00117 00118 PB_DS_CLASS_T_DEC 00119 PB_DS_CLASS_C_DEC:: 00120 ~tree_order_statistics_node_update() 00121 { }