libstdc++
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00001 // -*- C++ -*- 00002 00003 // Copyright (C) 2005, 2006, 2009, 2010, 2011 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 rb_tree_map_/insert_fn_imps.hpp 00038 * Contains an implementation for rb_tree_. 00039 */ 00040 00041 PB_DS_CLASS_T_DEC 00042 inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool> 00043 PB_DS_CLASS_C_DEC:: 00044 insert(const_reference r_value) 00045 { 00046 PB_DS_ASSERT_VALID((*this)) 00047 std::pair<point_iterator, bool> ins_pair = base_type::insert_leaf(r_value); 00048 if (ins_pair.second == true) 00049 { 00050 ins_pair.first.m_p_nd->m_red = true; 00051 PB_DS_STRUCT_ONLY_ASSERT_VALID((*this)) 00052 insert_fixup(ins_pair.first.m_p_nd); 00053 } 00054 00055 PB_DS_ASSERT_VALID((*this)) 00056 return ins_pair; 00057 } 00058 00059 PB_DS_CLASS_T_DEC 00060 inline void 00061 PB_DS_CLASS_C_DEC:: 00062 insert_fixup(node_pointer p_nd) 00063 { 00064 _GLIBCXX_DEBUG_ASSERT(p_nd->m_red == true); 00065 while (p_nd != base_type::m_p_head->m_p_parent && p_nd->m_p_parent->m_red) 00066 { 00067 if (p_nd->m_p_parent == p_nd->m_p_parent->m_p_parent->m_p_left) 00068 { 00069 node_pointer p_y = p_nd->m_p_parent->m_p_parent->m_p_right; 00070 if (p_y != 0 && p_y->m_red) 00071 { 00072 p_nd->m_p_parent->m_red = false; 00073 p_y->m_red = false; 00074 p_nd->m_p_parent->m_p_parent->m_red = true; 00075 p_nd = p_nd->m_p_parent->m_p_parent; 00076 } 00077 else 00078 { 00079 if (p_nd == p_nd->m_p_parent->m_p_right) 00080 { 00081 p_nd = p_nd->m_p_parent; 00082 base_type::rotate_left(p_nd); 00083 } 00084 p_nd->m_p_parent->m_red = false; 00085 p_nd->m_p_parent->m_p_parent->m_red = true; 00086 base_type::rotate_right(p_nd->m_p_parent->m_p_parent); 00087 } 00088 } 00089 else 00090 { 00091 node_pointer p_y = p_nd->m_p_parent->m_p_parent->m_p_left; 00092 if (p_y != 0 && p_y->m_red) 00093 { 00094 p_nd->m_p_parent->m_red = false; 00095 p_y->m_red = false; 00096 p_nd->m_p_parent->m_p_parent->m_red = true; 00097 p_nd = p_nd->m_p_parent->m_p_parent; 00098 } 00099 else 00100 { 00101 if (p_nd == p_nd->m_p_parent->m_p_left) 00102 { 00103 p_nd = p_nd->m_p_parent; 00104 base_type::rotate_right(p_nd); 00105 } 00106 p_nd->m_p_parent->m_red = false; 00107 p_nd->m_p_parent->m_p_parent->m_red = true; 00108 base_type::rotate_left(p_nd->m_p_parent->m_p_parent); 00109 } 00110 } 00111 } 00112 00113 base_type::update_to_top(p_nd, (node_update* )this); 00114 base_type::m_p_head->m_p_parent->m_red = false; 00115 }