--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009, 2010, 2011 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+// 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 binomial_heap_base_/erase_fn_imps.hpp
+ * Contains an implementation class for a base of binomial heaps.
+ */
+
+PB_DS_CLASS_T_DEC
+void
+PB_DS_CLASS_C_DEC::
+pop()
+{
+ PB_DS_ASSERT_VALID_COND((*this),true)
+ _GLIBCXX_DEBUG_ASSERT(!base_type::empty());
+
+ if (m_p_max == 0)
+ find_max();
+
+ _GLIBCXX_DEBUG_ASSERT(m_p_max != 0);
+ node_pointer p_nd = m_p_max;
+ remove_parentless_node(m_p_max);
+ base_type::actual_erase_node(p_nd);
+ m_p_max = 0;
+ PB_DS_ASSERT_VALID_COND((*this),true)
+}
+
+PB_DS_CLASS_T_DEC
+void
+PB_DS_CLASS_C_DEC::
+remove_parentless_node(node_pointer p_nd)
+{
+ _GLIBCXX_DEBUG_ASSERT(p_nd != 0);
+ _GLIBCXX_DEBUG_ASSERT(base_type::parent(p_nd) == 0);
+
+ node_pointer p_cur_root = p_nd == base_type::m_p_root?
+ p_nd->m_p_next_sibling : base_type::m_p_root;
+
+ if (p_cur_root != 0)
+ p_cur_root->m_p_prev_or_parent = 0;
+
+ if (p_nd->m_p_prev_or_parent != 0)
+ p_nd->m_p_prev_or_parent->m_p_next_sibling = p_nd->m_p_next_sibling;
+
+ if (p_nd->m_p_next_sibling != 0)
+ p_nd->m_p_next_sibling->m_p_prev_or_parent = p_nd->m_p_prev_or_parent;
+
+ node_pointer p_child = p_nd->m_p_l_child;
+ if (p_child != 0)
+ {
+ p_child->m_p_prev_or_parent = 0;
+ while (p_child->m_p_next_sibling != 0)
+ p_child = p_child->m_p_next_sibling;
+ }
+
+ m_p_max = 0;
+ base_type::m_p_root = join(p_cur_root, p_child);
+}
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+clear()
+{
+ base_type::clear();
+ m_p_max = 0;
+}
+
+PB_DS_CLASS_T_DEC
+void
+PB_DS_CLASS_C_DEC::
+erase(point_iterator it)
+{
+ PB_DS_ASSERT_VALID_COND((*this),true)
+ _GLIBCXX_DEBUG_ASSERT(!base_type::empty());
+
+ base_type::bubble_to_top(it.m_p_nd);
+ remove_parentless_node(it.m_p_nd);
+ base_type::actual_erase_node(it.m_p_nd);
+ m_p_max = 0;
+ PB_DS_ASSERT_VALID_COND((*this),true)
+}
+
+PB_DS_CLASS_T_DEC
+template<typename Pred>
+typename PB_DS_CLASS_C_DEC::size_type
+PB_DS_CLASS_C_DEC::
+erase_if(Pred pred)
+{
+ PB_DS_ASSERT_VALID_COND((*this),true)
+
+ if (base_type::empty())
+ {
+ PB_DS_ASSERT_VALID_COND((*this),true)
+ return 0;
+ }
+
+ base_type::to_linked_list();
+ node_pointer p_out = base_type::prune(pred);
+ size_type ersd = 0;
+ while (p_out != 0)
+ {
+ ++ersd;
+ node_pointer p_next = p_out->m_p_next_sibling;
+ base_type::actual_erase_node(p_out);
+ p_out = p_next;
+ }
+
+ node_pointer p_cur = base_type::m_p_root;
+ base_type::m_p_root = 0;
+ while (p_cur != 0)
+ {
+ node_pointer p_next = p_cur->m_p_next_sibling;
+ p_cur->m_p_l_child = p_cur->m_p_prev_or_parent = 0;
+ p_cur->m_metadata = 0;
+ p_cur->m_p_next_sibling = base_type::m_p_root;
+
+ if (base_type::m_p_root != 0)
+ base_type::m_p_root->m_p_prev_or_parent = p_cur;
+
+ base_type::m_p_root = p_cur;
+ base_type::m_p_root = fix(base_type::m_p_root);
+ p_cur = p_next;
+ }
+
+ m_p_max = 0;
+ PB_DS_ASSERT_VALID_COND((*this),true)
+ return ersd;
+}
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