1 // -*- C++ -*- 2 3 // Copyright (C) 2005-2018 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 3, 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 // 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. 19 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/>. 24 25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 26 27 // Permission to use, copy, modify, sell, and distribute this software 28 // is hereby granted without fee, provided that the above copyright 29 // notice appears in all copies, and that both that copyright notice 30 // and this permission notice appear in supporting documentation. None 31 // of the above authors, nor IBM Haifa Research Laboratories, make any 32 // representation about the suitability of this software for any 33 // purpose. It is provided "as is" without express or implied 34 // warranty. 35 36 /** 37 * @file bin_search_tree_/insert_fn_imps.hpp 38 * Contains an implementation class for bin_search_tree_. 39 */ 40 41 PB_DS_CLASS_T_DEC 42 inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool> 43 PB_DS_CLASS_C_DEC:: 44 insert_leaf(const_reference r_value) 45 { 46 PB_DS_STRUCT_ONLY_ASSERT_VALID((*this)) 47 48 if (m_size == 0) 49 return std::make_pair(insert_imp_empty(r_value), 50 true); 51 52 node_pointer p_nd = m_p_head->m_p_parent; 53 node_pointer p_pot = m_p_head; 54 55 while (p_nd != 0) 56 if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), 57 PB_DS_V2F(r_value))) 58 { 59 p_pot = p_nd; 60 61 p_nd = p_nd->m_p_left; 62 } 63 else 64 p_nd = p_nd->m_p_right; 65 66 if (p_pot == m_p_head) 67 return std::make_pair(insert_leaf_new(r_value, m_p_head->m_p_right, false), 68 true); 69 70 if (!Cmp_Fn::operator()(PB_DS_V2F(r_value), 71 PB_DS_V2F(p_pot->m_value))) 72 { 73 PB_DS_STRUCT_ONLY_ASSERT_VALID((*this)) 74 PB_DS_CHECK_KEY_EXISTS(PB_DS_V2F(r_value)) 75 return std::make_pair(p_pot, false); 76 } 77 78 PB_DS_CHECK_KEY_DOES_NOT_EXIST(PB_DS_V2F(r_value)) 79 80 p_nd = p_pot->m_p_left; 81 if (p_nd == 0) 82 return std::make_pair(insert_leaf_new(r_value, p_pot, true), 83 true); 84 85 while (p_nd->m_p_right != 0) 86 p_nd = p_nd->m_p_right; 87 88 return std::make_pair(insert_leaf_new(r_value, p_nd, false), 89 true); 90 } 91 92 PB_DS_CLASS_T_DEC 93 inline typename PB_DS_CLASS_C_DEC::iterator 94 PB_DS_CLASS_C_DEC:: 95 insert_leaf_new(const_reference r_value, node_pointer p_nd, bool left_nd) 96 { 97 node_pointer p_new_nd = 98 get_new_node_for_leaf_insert(r_value, 99 traits_base::m_no_throw_copies_indicator); 100 101 if (left_nd) 102 { 103 _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_left == 0); 104 _GLIBCXX_DEBUG_ASSERT(Cmp_Fn::operator()(PB_DS_V2F(r_value), 105 PB_DS_V2F(p_nd->m_value))); 106 107 p_nd->m_p_left = p_new_nd; 108 if (m_p_head->m_p_left == p_nd) 109 m_p_head->m_p_left = p_new_nd; 110 } 111 else 112 { 113 _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_right == 0); 114 _GLIBCXX_DEBUG_ASSERT(Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), 115 PB_DS_V2F(r_value))); 116 117 p_nd->m_p_right = p_new_nd; 118 if (m_p_head->m_p_right == p_nd) 119 m_p_head->m_p_right = p_new_nd; 120 } 121 122 p_new_nd->m_p_parent = p_nd; 123 p_new_nd->m_p_left = p_new_nd->m_p_right = 0; 124 PB_DS_ASSERT_NODE_CONSISTENT(p_nd) 125 126 update_to_top(p_new_nd, (node_update* )this); 127 _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_value));) 128 return iterator(p_new_nd); 129 } 130 131 PB_DS_CLASS_T_DEC 132 inline typename PB_DS_CLASS_C_DEC::iterator 133 PB_DS_CLASS_C_DEC:: 134 insert_imp_empty(const_reference r_value) 135 { 136 node_pointer p_new_node = 137 get_new_node_for_leaf_insert(r_value, traits_base::m_no_throw_copies_indicator); 138 139 m_p_head->m_p_left = m_p_head->m_p_right = 140 m_p_head->m_p_parent = p_new_node; 141 142 p_new_node->m_p_parent = m_p_head; 143 p_new_node->m_p_left = p_new_node->m_p_right = 0; 144 _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_value));) 145 146 update_to_top(m_p_head->m_p_parent, (node_update*)this); 147 return iterator(p_new_node); 148 } 149 150 PB_DS_CLASS_T_DEC 151 inline typename PB_DS_CLASS_C_DEC::node_pointer 152 PB_DS_CLASS_C_DEC:: 153 get_new_node_for_leaf_insert(const_reference r_val, false_type) 154 { 155 node_pointer p_new_nd = s_node_allocator.allocate(1); 156 cond_dealtor_t cond(p_new_nd); 157 158 new (const_cast<void* >(static_cast<const void* >(&p_new_nd->m_value))) 159 typename node::value_type(r_val); 160 161 cond.set_no_action(); 162 p_new_nd->m_p_left = p_new_nd->m_p_right = 0; 163 ++m_size; 164 return p_new_nd; 165 } 166 167 PB_DS_CLASS_T_DEC 168 inline typename PB_DS_CLASS_C_DEC::node_pointer 169 PB_DS_CLASS_C_DEC:: 170 get_new_node_for_leaf_insert(const_reference r_val, true_type) 171 { 172 node_pointer p_new_nd = s_node_allocator.allocate(1); 173 174 new (const_cast<void* >(static_cast<const void* >(&p_new_nd->m_value))) 175 typename node::value_type(r_val); 176 177 p_new_nd->m_p_left = p_new_nd->m_p_right = 0; 178 ++m_size; 179 return p_new_nd; 180 } 181