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 pairing_heap_/split_join_fn_imps.hpp 00038 * Contains an implementation class for a pairing heap. 00039 */ 00040 00041 PB_DS_CLASS_T_DEC 00042 template<typename Pred> 00043 void 00044 PB_DS_CLASS_C_DEC:: 00045 split(Pred pred, PB_DS_CLASS_C_DEC& other) 00046 { 00047 PB_DS_ASSERT_VALID((*this)) 00048 PB_DS_ASSERT_VALID(other) 00049 00050 other.clear(); 00051 00052 if (base_type::empty()) 00053 { 00054 PB_DS_ASSERT_VALID((*this)) 00055 PB_DS_ASSERT_VALID(other) 00056 return; 00057 } 00058 00059 base_type::to_linked_list(); 00060 node_pointer p_out = base_type::prune(pred); 00061 while (p_out != 0) 00062 { 00063 _GLIBCXX_DEBUG_ASSERT(base_type::m_size > 0); 00064 --base_type::m_size; 00065 ++other.m_size; 00066 node_pointer p_next = p_out->m_p_next_sibling; 00067 p_out->m_p_l_child = p_out->m_p_next_sibling = p_out->m_p_prev_or_parent = 0; 00068 00069 other.push_imp(p_out); 00070 p_out = p_next; 00071 } 00072 00073 PB_DS_ASSERT_VALID(other) 00074 node_pointer p_cur = base_type::m_p_root; 00075 base_type::m_p_root = 0; 00076 while (p_cur != 0) 00077 { 00078 node_pointer p_next = p_cur->m_p_next_sibling; 00079 p_cur->m_p_l_child = p_cur->m_p_next_sibling = p_cur->m_p_prev_or_parent = 0; 00080 00081 push_imp(p_cur); 00082 p_cur = p_next; 00083 } 00084 00085 PB_DS_ASSERT_VALID((*this)) 00086 PB_DS_ASSERT_VALID(other) 00087 } 00088 00089 PB_DS_CLASS_T_DEC 00090 inline void 00091 PB_DS_CLASS_C_DEC:: 00092 join(PB_DS_CLASS_C_DEC& other) 00093 { 00094 PB_DS_ASSERT_VALID((*this)) 00095 PB_DS_ASSERT_VALID(other) 00096 00097 if (other.m_p_root == 0) 00098 { 00099 PB_DS_ASSERT_VALID((*this)) 00100 PB_DS_ASSERT_VALID(other) 00101 return; 00102 } 00103 00104 if (base_type::m_p_root == 0) 00105 base_type::m_p_root = other.m_p_root; 00106 else if (Cmp_Fn::operator()(base_type::m_p_root->m_value, other.m_p_root->m_value)) 00107 { 00108 base_type::make_child_of(base_type::m_p_root, other.m_p_root); 00109 PB_DS_ASSERT_NODE_CONSISTENT(other.m_p_root, false) 00110 base_type::m_p_root = other.m_p_root; 00111 } 00112 else 00113 { 00114 base_type::make_child_of(other.m_p_root, base_type::m_p_root); 00115 PB_DS_ASSERT_NODE_CONSISTENT(base_type::m_p_root, false) 00116 } 00117 00118 base_type::m_size += other.m_size; 00119 other.m_p_root = 0; 00120 other.m_size = 0; 00121 PB_DS_ASSERT_VALID((*this)) 00122 PB_DS_ASSERT_VALID(other) 00123 }