--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009 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 erase_fn_imps.hpp
+ * Contains an implementation class for left_child_next_sibling_heap_.
+ */
+
+PB_DS_CLASS_T_DEC
+void
+PB_DS_CLASS_C_DEC::
+clear()
+{
+ clear_imp(m_p_root);
+ _GLIBCXX_DEBUG_ASSERT(m_size == 0);
+ m_p_root = NULL;
+}
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+actual_erase_node(node_pointer p_nd)
+{
+ _GLIBCXX_DEBUG_ASSERT(m_size > 0);
+ --m_size;
+ p_nd->~node();
+ s_node_allocator.deallocate(p_nd, 1);
+}
+
+PB_DS_CLASS_T_DEC
+void
+PB_DS_CLASS_C_DEC::
+clear_imp(node_pointer p_nd)
+{
+ while (p_nd != NULL)
+ {
+ clear_imp(p_nd->m_p_l_child);
+ node_pointer p_next = p_nd->m_p_next_sibling;
+ actual_erase_node(p_nd);
+ p_nd = p_next;
+ }
+}
+
+PB_DS_CLASS_T_DEC
+void
+PB_DS_CLASS_C_DEC::
+to_linked_list()
+{
+ _GLIBCXX_DEBUG_ONLY(assert_valid();)
+ node_pointer p_cur = m_p_root;
+ while (p_cur != NULL)
+ if (p_cur->m_p_l_child != NULL)
+ {
+ node_pointer p_child_next = p_cur->m_p_l_child->m_p_next_sibling;
+ p_cur->m_p_l_child->m_p_next_sibling = p_cur->m_p_next_sibling;
+ p_cur->m_p_next_sibling = p_cur->m_p_l_child;
+ p_cur->m_p_l_child = p_child_next;
+ }
+ else
+ p_cur = p_cur->m_p_next_sibling;
+
+#ifdef _GLIBCXX_DEBUG
+ const_node_pointer p_counter = m_p_root;
+ size_type count = 0;
+ while (p_counter != NULL)
+ {
+ ++count;
+ _GLIBCXX_DEBUG_ASSERT(p_counter->m_p_l_child == NULL);
+ p_counter = p_counter->m_p_next_sibling;
+ }
+ _GLIBCXX_DEBUG_ASSERT(count == m_size);
+#endif
+}
+
+PB_DS_CLASS_T_DEC
+template<typename Pred>
+typename PB_DS_CLASS_C_DEC::node_pointer
+PB_DS_CLASS_C_DEC::
+prune(Pred pred)
+{
+ node_pointer p_cur = m_p_root;
+ m_p_root = NULL;
+ node_pointer p_out = NULL;
+ while (p_cur != NULL)
+ {
+ node_pointer p_next = p_cur->m_p_next_sibling;
+ if (pred(p_cur->m_value))
+ {
+ p_cur->m_p_next_sibling = p_out;
+ if (p_out != NULL)
+ p_out->m_p_prev_or_parent = p_cur;
+ p_out = p_cur;
+ }
+ else
+ {
+ p_cur->m_p_next_sibling = m_p_root;
+ if (m_p_root != NULL)
+ m_p_root->m_p_prev_or_parent = p_cur;
+ m_p_root = p_cur;
+ }
+ p_cur = p_next;
+ }
+ return p_out;
+}
+
+PB_DS_CLASS_T_DEC
+void
+PB_DS_CLASS_C_DEC::
+bubble_to_top(node_pointer p_nd)
+{
+ node_pointer p_parent = parent(p_nd);
+ while (p_parent != NULL)
+ {
+ swap_with_parent(p_nd, p_parent);
+ p_parent = parent(p_nd);
+ }
+}
+
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