| // -*- C++ -*- |
| |
| // Copyright (C) 2005, 2006 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the terms |
| // of the GNU General Public License as published by the Free Software |
| // Foundation; either version 2, or (at your option) any later |
| // version. |
| |
| // This library is distributed in the hope that it will be useful, but |
| // WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| // General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License |
| // along with this library; see the file COPYING. If not, write to |
| // the Free Software Foundation, 59 Temple Place - Suite 330, Boston, |
| // MA 02111-1307, USA. |
| |
| // As a special exception, you may use this file as part of a free |
| // software library without restriction. Specifically, if other files |
| // instantiate templates or use macros or inline functions from this |
| // file, or you compile this file and link it with other files to |
| // produce an executable, this file does not by itself cause the |
| // resulting executable to be covered by the GNU General Public |
| // License. This exception does not however invalidate any other |
| // reasons why the executable file might be covered by the GNU General |
| // Public License. |
| |
| // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. |
| |
| // Permission to use, copy, modify, sell, and distribute this software |
| // is hereby granted without fee, provided that the above copyright |
| // notice appears in all copies, and that both that copyright notice |
| // and this permission notice appear in supporting documentation. None |
| // of the above authors, nor IBM Haifa Research Laboratories, make any |
| // representation about the suitability of this software for any |
| // purpose. It is provided "as is" without express or implied |
| // warranty. |
| |
| /** |
| * @file insert_fn_imps.hpp |
| * Contains an implementation class for a base of binomial heaps. |
| */ |
| |
| PB_DS_CLASS_T_DEC |
| inline typename PB_DS_CLASS_C_DEC::point_iterator |
| PB_DS_CLASS_C_DEC:: |
| push(const_reference r_val) |
| { |
| _GLIBCXX_DEBUG_ONLY(assert_valid(true);) |
| |
| node_pointer p_nd = base_type::get_new_node_for_insert(r_val); |
| |
| insert_node(p_nd); |
| |
| m_p_max = NULL; |
| |
| _GLIBCXX_DEBUG_ONLY(assert_valid(true);) |
| |
| return point_iterator(p_nd); |
| } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| insert_node(node_pointer p_nd) |
| { |
| if (base_type::m_p_root == NULL) |
| { |
| p_nd->m_p_next_sibling = p_nd->m_p_prev_or_parent = |
| p_nd->m_p_l_child = NULL; |
| |
| p_nd->m_metadata = 0; |
| |
| base_type::m_p_root = p_nd; |
| |
| return; |
| } |
| |
| if (base_type::m_p_root->m_metadata > 0) |
| { |
| p_nd->m_p_prev_or_parent = p_nd->m_p_l_child = NULL; |
| |
| p_nd->m_p_next_sibling = base_type::m_p_root; |
| |
| base_type::m_p_root->m_p_prev_or_parent = p_nd; |
| |
| base_type::m_p_root = p_nd; |
| |
| p_nd->m_metadata = 0; |
| |
| return; |
| } |
| |
| if (Cmp_Fn::operator()(base_type::m_p_root->m_value, p_nd->m_value)) |
| { |
| p_nd->m_p_next_sibling = base_type::m_p_root->m_p_next_sibling; |
| |
| p_nd->m_p_prev_or_parent = NULL; |
| |
| p_nd->m_metadata = 1; |
| |
| p_nd->m_p_l_child = base_type::m_p_root; |
| |
| base_type::m_p_root->m_p_prev_or_parent = p_nd; |
| |
| base_type::m_p_root->m_p_next_sibling = NULL; |
| |
| base_type::m_p_root = p_nd; |
| } |
| else |
| { |
| p_nd->m_p_next_sibling = NULL; |
| |
| p_nd->m_p_l_child = NULL; |
| |
| p_nd->m_p_prev_or_parent = base_type::m_p_root; |
| |
| p_nd->m_metadata = 0; |
| |
| _GLIBCXX_DEBUG_ASSERT(base_type::m_p_root->m_p_l_child == 0); |
| base_type::m_p_root->m_p_l_child = p_nd; |
| |
| base_type::m_p_root->m_metadata = 1; |
| } |
| |
| base_type::m_p_root = fix(base_type::m_p_root); |
| } |
| |
| PB_DS_CLASS_T_DEC |
| inline typename PB_DS_CLASS_C_DEC::node_pointer |
| PB_DS_CLASS_C_DEC:: |
| fix(node_pointer p_nd) const |
| { |
| while (p_nd->m_p_next_sibling != NULL&& |
| p_nd->m_metadata == p_nd->m_p_next_sibling->m_metadata) |
| { |
| node_pointer p_next = p_nd->m_p_next_sibling; |
| |
| if (Cmp_Fn::operator()(p_nd->m_value, p_next->m_value)) |
| { |
| p_next->m_p_prev_or_parent = |
| p_nd->m_p_prev_or_parent; |
| |
| if (p_nd->m_p_prev_or_parent != NULL) |
| p_nd->m_p_prev_or_parent->m_p_next_sibling = p_next; |
| |
| base_type::make_child_of(p_nd, p_next); |
| |
| ++p_next->m_metadata; |
| |
| p_nd = p_next; |
| } |
| else |
| { |
| p_nd->m_p_next_sibling = p_next->m_p_next_sibling; |
| |
| if (p_nd->m_p_next_sibling != NULL) |
| p_next->m_p_next_sibling = NULL; |
| |
| base_type::make_child_of(p_next, p_nd); |
| |
| ++p_nd->m_metadata; |
| } |
| } |
| |
| if (p_nd->m_p_next_sibling != NULL) |
| p_nd->m_p_next_sibling->m_p_prev_or_parent = p_nd; |
| |
| return p_nd; |
| } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| modify(point_iterator it, const_reference r_new_val) |
| { |
| _GLIBCXX_DEBUG_ONLY(assert_valid(true);) |
| node_pointer p_nd = it.m_p_nd; |
| |
| _GLIBCXX_DEBUG_ASSERT(p_nd != NULL); |
| _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(p_nd, false);) |
| |
| const bool bubble_up = Cmp_Fn::operator()(p_nd->m_value, r_new_val); |
| |
| p_nd->m_value = r_new_val; |
| |
| if (bubble_up) |
| { |
| node_pointer p_parent = base_type::parent(p_nd); |
| |
| while (p_parent != NULL&& |
| Cmp_Fn::operator()(p_parent->m_value, p_nd->m_value)) |
| { |
| base_type::swap_with_parent(p_nd, p_parent); |
| |
| p_parent = base_type::parent(p_nd); |
| } |
| |
| if (p_nd->m_p_prev_or_parent == NULL) |
| base_type::m_p_root = p_nd; |
| |
| m_p_max = NULL; |
| |
| _GLIBCXX_DEBUG_ONLY(assert_valid(true);) |
| |
| return; |
| } |
| |
| base_type::bubble_to_top(p_nd); |
| |
| remove_parentless_node(p_nd); |
| |
| insert_node(p_nd); |
| |
| m_p_max = NULL; |
| |
| _GLIBCXX_DEBUG_ONLY(assert_valid(true);) |
| } |
| |