1169691Skan// -*- C++ -*- 2169691Skan 3169691Skan// Copyright (C) 2005, 2006 Free Software Foundation, Inc. 4169691Skan// 5169691Skan// This file is part of the GNU ISO C++ Library. This library is free 6169691Skan// software; you can redistribute it and/or modify it under the terms 7169691Skan// of the GNU General Public License as published by the Free Software 8169691Skan// Foundation; either version 2, or (at your option) any later 9169691Skan// version. 10169691Skan 11169691Skan// This library is distributed in the hope that it will be useful, but 12169691Skan// WITHOUT ANY WARRANTY; without even the implied warranty of 13169691Skan// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14169691Skan// General Public License for more details. 15169691Skan 16169691Skan// You should have received a copy of the GNU General Public License 17169691Skan// along with this library; see the file COPYING. If not, write to 18169691Skan// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19169691Skan// MA 02111-1307, USA. 20169691Skan 21169691Skan// As a special exception, you may use this file as part of a free 22169691Skan// software library without restriction. Specifically, if other files 23169691Skan// instantiate templates or use macros or inline functions from this 24169691Skan// file, or you compile this file and link it with other files to 25169691Skan// produce an executable, this file does not by itself cause the 26169691Skan// resulting executable to be covered by the GNU General Public 27169691Skan// License. This exception does not however invalidate any other 28169691Skan// reasons why the executable file might be covered by the GNU General 29169691Skan// Public License. 30169691Skan 31169691Skan// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32169691Skan 33169691Skan// Permission to use, copy, modify, sell, and distribute this software 34169691Skan// is hereby granted without fee, provided that the above copyright 35169691Skan// notice appears in all copies, and that both that copyright notice 36169691Skan// and this permission notice appear in supporting documentation. None 37169691Skan// of the above authors, nor IBM Haifa Research Laboratories, make any 38169691Skan// representation about the suitability of this software for any 39169691Skan// purpose. It is provided "as is" without express or implied 40169691Skan// warranty. 41169691Skan 42169691Skan/** 43169691Skan * @file rotate_fn_imps.hpp 44169691Skan * Contains imps for rotating nodes. 45169691Skan */ 46169691Skan 47169691SkanPB_DS_CLASS_T_DEC 48169691Skaninline void 49169691SkanPB_DS_CLASS_C_DEC:: 50169691Skanrotate_left(node_pointer p_x) 51169691Skan{ 52169691Skan node_pointer p_y = p_x->m_p_right; 53169691Skan 54169691Skan p_x->m_p_right = p_y->m_p_left; 55169691Skan 56169691Skan if (p_y->m_p_left != NULL) 57169691Skan p_y->m_p_left->m_p_parent = p_x; 58169691Skan 59169691Skan p_y->m_p_parent = p_x->m_p_parent; 60169691Skan 61169691Skan if (p_x == m_p_head->m_p_parent) 62169691Skan m_p_head->m_p_parent = p_y; 63169691Skan else if (p_x == p_x->m_p_parent->m_p_left) 64169691Skan p_x->m_p_parent->m_p_left = p_y; 65169691Skan else 66169691Skan p_x->m_p_parent->m_p_right = p_y; 67169691Skan 68169691Skan p_y->m_p_left = p_x; 69169691Skan p_x->m_p_parent = p_y; 70169691Skan 71169691Skan _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_x);) 72169691Skan _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_y);) 73169691Skan 74169691Skan apply_update(p_x, (node_update* )this); 75169691Skan apply_update(p_x->m_p_parent, (node_update* )this); 76169691Skan} 77169691Skan 78169691SkanPB_DS_CLASS_T_DEC 79169691Skaninline void 80169691SkanPB_DS_CLASS_C_DEC:: 81169691Skanrotate_right(node_pointer p_x) 82169691Skan{ 83169691Skan node_pointer p_y = p_x->m_p_left; 84169691Skan 85169691Skan p_x->m_p_left = p_y->m_p_right; 86169691Skan 87169691Skan if (p_y->m_p_right != NULL) 88169691Skan p_y->m_p_right->m_p_parent = p_x; 89169691Skan 90169691Skan p_y->m_p_parent = p_x->m_p_parent; 91169691Skan 92169691Skan if (p_x == m_p_head->m_p_parent) 93169691Skan m_p_head->m_p_parent = p_y; 94169691Skan else if (p_x == p_x->m_p_parent->m_p_right) 95169691Skan p_x->m_p_parent->m_p_right = p_y; 96169691Skan else 97169691Skan p_x->m_p_parent->m_p_left = p_y; 98169691Skan 99169691Skan p_y->m_p_right = p_x; 100169691Skan p_x->m_p_parent = p_y; 101169691Skan 102169691Skan _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_x);) 103169691Skan _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_y);) 104169691Skan 105169691Skan apply_update(p_x, (node_update* )this); 106169691Skan apply_update(p_x->m_p_parent, (node_update* )this); 107169691Skan} 108169691Skan 109169691SkanPB_DS_CLASS_T_DEC 110169691Skaninline void 111169691SkanPB_DS_CLASS_C_DEC:: 112169691Skanrotate_parent(node_pointer p_nd) 113169691Skan{ 114169691Skan node_pointer p_parent = p_nd->m_p_parent; 115169691Skan 116169691Skan if (p_nd == p_parent->m_p_left) 117169691Skan rotate_right(p_parent); 118169691Skan else 119169691Skan rotate_left(p_parent); 120169691Skan 121169691Skan _GLIBCXX_DEBUG_ASSERT(p_parent->m_p_parent = p_nd); 122169691Skan _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_left == p_parent || 123169691Skan p_nd->m_p_right == p_parent); 124169691Skan} 125169691Skan 126169691SkanPB_DS_CLASS_T_DEC 127169691Skaninline void 128169691SkanPB_DS_CLASS_C_DEC:: 129169691Skanapply_update(node_pointer /*p_nd*/, null_node_update_pointer /*p_update*/) 130169691Skan{ } 131169691Skan 132169691SkanPB_DS_CLASS_T_DEC 133169691Skantemplate<typename Node_Update_> 134169691Skaninline void 135169691SkanPB_DS_CLASS_C_DEC:: 136169691Skanapply_update(node_pointer p_nd, Node_Update_* /*p_update*/) 137169691Skan{ 138169691Skan node_update::operator()( 139169691Skan node_iterator(p_nd), 140169691Skan const_node_iterator(static_cast<node_pointer>(NULL))); 141169691Skan} 142169691Skan 143169691SkanPB_DS_CLASS_T_DEC 144169691Skantemplate<typename Node_Update_> 145169691Skaninline void 146169691SkanPB_DS_CLASS_C_DEC:: 147169691Skanupdate_to_top(node_pointer p_nd, Node_Update_* p_update) 148169691Skan{ 149169691Skan while (p_nd != m_p_head) 150169691Skan { 151169691Skan apply_update(p_nd, p_update); 152169691Skan 153169691Skan p_nd = p_nd->m_p_parent; 154169691Skan } 155169691Skan} 156169691Skan 157169691SkanPB_DS_CLASS_T_DEC 158169691Skaninline void 159169691SkanPB_DS_CLASS_C_DEC:: 160169691Skanupdate_to_top(node_pointer /*p_nd*/, null_node_update_pointer /*p_update*/) 161169691Skan{ } 162169691Skan 163