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 splay_tree_/split_join_fn_imps.hpp 00038 * Contains an implementation class for splay_tree_. 00039 */ 00040 00041 PB_DS_CLASS_T_DEC 00042 inline void 00043 PB_DS_CLASS_C_DEC:: 00044 join(PB_DS_CLASS_C_DEC& other) 00045 { 00046 PB_DS_ASSERT_VALID((*this)) 00047 PB_DS_ASSERT_VALID(other) 00048 if (base_type::join_prep(other) == false) 00049 { 00050 PB_DS_ASSERT_VALID((*this)) 00051 PB_DS_ASSERT_VALID(other) 00052 return; 00053 } 00054 00055 node_pointer p_target_r = other.leftmost(other.m_p_head); 00056 _GLIBCXX_DEBUG_ASSERT(p_target_r != 0); 00057 other.splay(p_target_r); 00058 00059 _GLIBCXX_DEBUG_ASSERT(p_target_r == other.m_p_head->m_p_parent); 00060 _GLIBCXX_DEBUG_ASSERT(p_target_r->m_p_left == 0); 00061 00062 p_target_r->m_p_left = base_type::m_p_head->m_p_parent; 00063 00064 _GLIBCXX_DEBUG_ASSERT(p_target_r->m_p_left != 0); 00065 p_target_r->m_p_left->m_p_parent = p_target_r; 00066 00067 base_type::m_p_head->m_p_parent = p_target_r; 00068 p_target_r->m_p_parent = base_type::m_p_head; 00069 00070 this->apply_update(p_target_r, (node_update*)this); 00071 base_type::join_finish(other); 00072 00073 PB_DS_ASSERT_VALID((*this)) 00074 PB_DS_ASSERT_VALID(other) 00075 } 00076 00077 PB_DS_CLASS_T_DEC 00078 void 00079 PB_DS_CLASS_C_DEC:: 00080 split(key_const_reference r_key, PB_DS_CLASS_C_DEC& other) 00081 { 00082 PB_DS_ASSERT_VALID((*this)) 00083 PB_DS_ASSERT_VALID(other) 00084 00085 if (base_type::split_prep(r_key, other) == false) 00086 { 00087 PB_DS_ASSERT_VALID((*this)) 00088 PB_DS_ASSERT_VALID(other) 00089 return; 00090 } 00091 00092 node_pointer p_upper_bound = this->upper_bound(r_key).m_p_nd; 00093 _GLIBCXX_DEBUG_ASSERT(p_upper_bound != 0); 00094 00095 splay(p_upper_bound); 00096 _GLIBCXX_DEBUG_ASSERT(p_upper_bound->m_p_parent == this->m_p_head); 00097 00098 node_pointer p_new_root = p_upper_bound->m_p_left; 00099 _GLIBCXX_DEBUG_ASSERT(p_new_root != 0); 00100 00101 base_type::m_p_head->m_p_parent = p_new_root; 00102 p_new_root->m_p_parent = base_type::m_p_head; 00103 other.m_p_head->m_p_parent = p_upper_bound; 00104 p_upper_bound->m_p_parent = other.m_p_head; 00105 p_upper_bound->m_p_left = 0; 00106 this->apply_update(p_upper_bound, (node_update*)this); 00107 base_type::split_finish(other); 00108 00109 PB_DS_ASSERT_VALID((*this)) 00110 PB_DS_ASSERT_VALID(other) 00111 } 00112