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 insert_fn_imps.hpp 44169691Skan * Contains an implementation for rb_tree_. 45169691Skan */ 46169691Skan 47169691SkanPB_DS_CLASS_T_DEC 48169691Skaninline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool> 49169691SkanPB_DS_CLASS_C_DEC:: 50169691Skaninsert(const_reference r_value) 51169691Skan{ 52169691Skan _GLIBCXX_DEBUG_ONLY(assert_valid();) 53169691Skan std::pair<point_iterator, bool> ins_pair = base_type::insert_leaf(r_value); 54169691Skan if (ins_pair.second == true) 55169691Skan { 56169691Skan ins_pair.first.m_p_nd->m_red = true; 57169691Skan _GLIBCXX_DEBUG_ONLY(this->structure_only_assert_valid();) 58169691Skan insert_fixup(ins_pair.first.m_p_nd); 59169691Skan } 60169691Skan 61169691Skan _GLIBCXX_DEBUG_ONLY(assert_valid();) 62169691Skan return ins_pair; 63169691Skan} 64169691Skan 65169691SkanPB_DS_CLASS_T_DEC 66169691Skaninline void 67169691SkanPB_DS_CLASS_C_DEC:: 68169691Skaninsert_fixup(node_pointer p_nd) 69169691Skan{ 70169691Skan _GLIBCXX_DEBUG_ASSERT(p_nd->m_red == true); 71169691Skan while (p_nd != base_type::m_p_head->m_p_parent && p_nd->m_p_parent->m_red) 72169691Skan { 73169691Skan if (p_nd->m_p_parent == p_nd->m_p_parent->m_p_parent->m_p_left) 74169691Skan { 75169691Skan node_pointer p_y = p_nd->m_p_parent->m_p_parent->m_p_right; 76169691Skan if (p_y != NULL && p_y->m_red) 77169691Skan { 78169691Skan p_nd->m_p_parent->m_red = false; 79169691Skan p_y->m_red = false; 80169691Skan p_nd->m_p_parent->m_p_parent->m_red = true; 81169691Skan p_nd = p_nd->m_p_parent->m_p_parent; 82169691Skan } 83169691Skan else 84169691Skan { 85169691Skan if (p_nd == p_nd->m_p_parent->m_p_right) 86169691Skan { 87169691Skan p_nd = p_nd->m_p_parent; 88169691Skan base_type::rotate_left(p_nd); 89169691Skan } 90169691Skan p_nd->m_p_parent->m_red = false; 91169691Skan p_nd->m_p_parent->m_p_parent->m_red = true; 92169691Skan base_type::rotate_right(p_nd->m_p_parent->m_p_parent); 93169691Skan } 94169691Skan } 95169691Skan else 96169691Skan { 97169691Skan node_pointer p_y = p_nd->m_p_parent->m_p_parent->m_p_left; 98169691Skan if (p_y != NULL && p_y->m_red) 99169691Skan { 100169691Skan p_nd->m_p_parent->m_red = false; 101169691Skan p_y->m_red = false; 102169691Skan p_nd->m_p_parent->m_p_parent->m_red = true; 103169691Skan p_nd = p_nd->m_p_parent->m_p_parent; 104169691Skan } 105169691Skan else 106169691Skan { 107169691Skan if (p_nd == p_nd->m_p_parent->m_p_left) 108169691Skan { 109169691Skan p_nd = p_nd->m_p_parent; 110169691Skan base_type::rotate_right(p_nd); 111169691Skan } 112169691Skan p_nd->m_p_parent->m_red = false; 113169691Skan p_nd->m_p_parent->m_p_parent->m_red = true; 114169691Skan base_type::rotate_left(p_nd->m_p_parent->m_p_parent); 115169691Skan } 116169691Skan } 117169691Skan } 118169691Skan 119169691Skan base_type::update_to_top(p_nd, (node_update* )this); 120169691Skan base_type::m_p_head->m_p_parent->m_red = false; 121169691Skan} 122