1// -*- C++ -*- 2 3// Copyright (C) 2005, 2006 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 2, 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// You should have received a copy of the GNU General Public License 17// along with this library; see the file COPYING. If not, write to 18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19// MA 02111-1307, USA. 20 21// As a special exception, you may use this file as part of a free 22// software library without restriction. Specifically, if other files 23// instantiate templates or use macros or inline functions from this 24// file, or you compile this file and link it with other files to 25// produce an executable, this file does not by itself cause the 26// resulting executable to be covered by the GNU General Public 27// License. This exception does not however invalidate any other 28// reasons why the executable file might be covered by the GNU General 29// Public License. 30 31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32 33// Permission to use, copy, modify, sell, and distribute this software 34// is hereby granted without fee, provided that the above copyright 35// notice appears in all copies, and that both that copyright notice 36// and this permission notice appear in supporting documentation. None 37// of the above authors, nor IBM Haifa Research Laboratories, make any 38// representation about the suitability of this software for any 39// purpose. It is provided "as is" without express or implied 40// warranty. 41 42/** 43 * @file split_join_fn_imps.hpp 44 * Contains an implementation class for a pairing heap. 45 */ 46 47PB_DS_CLASS_T_DEC 48template<typename Pred> 49void 50PB_DS_CLASS_C_DEC:: 51split(Pred pred, PB_DS_CLASS_C_DEC& other) 52{ 53 _GLIBCXX_DEBUG_ONLY(assert_valid();) 54 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 55 56 other.clear(); 57 58 if (base_type::empty()) 59 { 60 _GLIBCXX_DEBUG_ONLY(assert_valid();) 61 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 62 63 return; 64 } 65 66 base_type::to_linked_list(); 67 68 node_pointer p_out = base_type::prune(pred); 69 70 while (p_out != NULL) 71 { 72 _GLIBCXX_DEBUG_ASSERT(base_type::m_size > 0); 73 --base_type::m_size; 74 75 ++other.m_size; 76 77 node_pointer p_next = p_out->m_p_next_sibling; 78 79 p_out->m_p_l_child = p_out->m_p_next_sibling = p_out->m_p_prev_or_parent = NULL; 80 81 other.push_imp(p_out); 82 83 p_out = p_next; 84 } 85 86 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 87 88 node_pointer p_cur = base_type::m_p_root; 89 90 base_type::m_p_root = NULL; 91 92 while (p_cur != NULL) 93 { 94 node_pointer p_next = p_cur->m_p_next_sibling; 95 96 p_cur->m_p_l_child = p_cur->m_p_next_sibling = p_cur->m_p_prev_or_parent = NULL; 97 98 push_imp(p_cur); 99 100 p_cur = p_next; 101 } 102 103 _GLIBCXX_DEBUG_ONLY(assert_valid();) 104 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 105 } 106 107PB_DS_CLASS_T_DEC 108inline void 109PB_DS_CLASS_C_DEC:: 110join(PB_DS_CLASS_C_DEC& other) 111{ 112 _GLIBCXX_DEBUG_ONLY(assert_valid();) 113 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 114 115 if (other.m_p_root == NULL) 116 { 117 _GLIBCXX_DEBUG_ONLY(assert_valid();) 118 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 119 120 return; 121 } 122 123 if (base_type::m_p_root == NULL) 124 base_type::m_p_root = other.m_p_root; 125 else if (Cmp_Fn::operator()(base_type::m_p_root->m_value, other.m_p_root->m_value)) 126 { 127 base_type::make_child_of(base_type::m_p_root, other.m_p_root); 128 _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(other.m_p_root, false)); 129 130 base_type::m_p_root = other.m_p_root; 131 } 132 else 133 { 134 base_type::make_child_of(other.m_p_root, base_type::m_p_root); 135 _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(base_type::m_p_root, false)); 136 } 137 138 base_type::m_size += other.m_size; 139 140 other.m_p_root = NULL; 141 other.m_size = 0; 142 143 _GLIBCXX_DEBUG_ONLY(assert_valid();) 144 _GLIBCXX_DEBUG_ONLY(other.assert_valid();) 145 } 146 147