1 // -*- C++ -*- 2 3 // Copyright (C) 2005, 2006, 2009, 2010 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 split_join_fn_imps.hpp 38 * Contains an implementation class for a pairing heap. 39 */ 40 41 PB_DS_CLASS_T_DEC 42 template<typename Pred> 43 void 44 PB_DS_CLASS_C_DEC:: 45 split(Pred pred, PB_DS_CLASS_C_DEC& other) 46 { 47 _GLIBCXX_DEBUG_ONLY(assert_valid();) 48 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 49 50 other.clear(); 51 52 if (base_type::empty()) 53 { 54 _GLIBCXX_DEBUG_ONLY(assert_valid();) 55 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 56 57 return; 58 } 59 60 base_type::to_linked_list(); 61 62 node_pointer p_out = base_type::prune(pred); 63 64 while (p_out != 0) 65 { 66 _GLIBCXX_DEBUG_ASSERT(base_type::m_size > 0); 67 --base_type::m_size; 68 69 ++other.m_size; 70 71 node_pointer p_next = p_out->m_p_next_sibling; 72 73 p_out->m_p_l_child = p_out->m_p_next_sibling = p_out->m_p_prev_or_parent = 0; 74 75 other.push_imp(p_out); 76 77 p_out = p_next; 78 } 79 80 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 81 82 node_pointer p_cur = base_type::m_p_root; 83 84 base_type::m_p_root = 0; 85 86 while (p_cur != 0) 87 { 88 node_pointer p_next = p_cur->m_p_next_sibling; 89 90 p_cur->m_p_l_child = p_cur->m_p_next_sibling = p_cur->m_p_prev_or_parent = 0; 91 92 push_imp(p_cur); 93 94 p_cur = p_next; 95 } 96 97 _GLIBCXX_DEBUG_ONLY(assert_valid();) 98 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 99 } 100 101 PB_DS_CLASS_T_DEC 102 inline void 103 PB_DS_CLASS_C_DEC:: 104 join(PB_DS_CLASS_C_DEC& other) 105 { 106 _GLIBCXX_DEBUG_ONLY(assert_valid();) 107 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 108 109 if (other.m_p_root == 0) 110 { 111 _GLIBCXX_DEBUG_ONLY(assert_valid();) 112 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 113 114 return; 115 } 116 117 if (base_type::m_p_root == 0) 118 base_type::m_p_root = other.m_p_root; 119 else if (Cmp_Fn::operator()(base_type::m_p_root->m_value, other.m_p_root->m_value)) 120 { 121 base_type::make_child_of(base_type::m_p_root, other.m_p_root); 122 _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(other.m_p_root, false)); 123 124 base_type::m_p_root = other.m_p_root; 125 } 126 else 127 { 128 base_type::make_child_of(other.m_p_root, base_type::m_p_root); 129 _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(base_type::m_p_root, false)); 130 } 131 132 base_type::m_size += other.m_size; 133 134 other.m_p_root = 0; 135 other.m_size = 0; 136 137 _GLIBCXX_DEBUG_ONLY(assert_valid();) 138 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 139 } 140 141
