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// -*- 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 debug_fn_imps.hpp
 * Contains an implementation class for bin_search_tree_.
 */
 
#ifdef _GLIBCXX_DEBUG
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_valid() const
{
  structure_only_assert_valid();
  assert_consistent_with_debug_base();
  assert_size();
  assert_iterators();
  if (m_p_head->m_p_parent == NULL)
    {
      _GLIBCXX_DEBUG_ASSERT(m_size == 0);
    }
  else
    {
      _GLIBCXX_DEBUG_ASSERT(m_size > 0);
    }
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
structure_only_assert_valid() const
{
  _GLIBCXX_DEBUG_ASSERT(m_p_head != NULL);
  if (m_p_head->m_p_parent == NULL)
    {
      _GLIBCXX_DEBUG_ASSERT(m_p_head->m_p_left == m_p_head);
      _GLIBCXX_DEBUG_ASSERT(m_p_head->m_p_right == m_p_head);
    }
  else
    {
      _GLIBCXX_DEBUG_ASSERT(m_p_head->m_p_parent->m_p_parent == m_p_head);
      _GLIBCXX_DEBUG_ASSERT(m_p_head->m_p_left != m_p_head);
      _GLIBCXX_DEBUG_ASSERT(m_p_head->m_p_right != m_p_head);
    }
 
  if (m_p_head->m_p_parent != NULL)
    assert_node_consistent(m_p_head->m_p_parent);
  assert_min();
  assert_max();
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_node_consistent(const node_pointer p_nd) const
{
  assert_node_consistent_(p_nd);
}
 
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_consistent_t
PB_DS_CLASS_C_DEC::
assert_node_consistent_(const node_pointer p_nd) const
{
  if (p_nd == NULL)
    return (std::make_pair((const_pointer)NULL,(const_pointer)NULL));
 
  assert_node_consistent_with_left(p_nd);
  assert_node_consistent_with_right(p_nd);
 
  const std::pair<const_pointer, const_pointer>
    l_range = assert_node_consistent_(p_nd->m_p_left);
 
  if (l_range.second != NULL)
    _GLIBCXX_DEBUG_ASSERT(Cmp_Fn::operator()(PB_DS_V2F(*l_range.second),
					     PB_DS_V2F(p_nd->m_value)));
 
  const std::pair<const_pointer, const_pointer>
    r_range = assert_node_consistent_(p_nd->m_p_right);
 
  if (r_range.first != NULL)
    _GLIBCXX_DEBUG_ASSERT(Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value),
					     PB_DS_V2F(*r_range.first)));
 
  return (std::make_pair((l_range.first != NULL)? l_range.first :& p_nd->m_value,(r_range.second != NULL)? r_range.second :& p_nd->m_value));
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_node_consistent_with_left(const node_pointer p_nd) const
{
  if (p_nd->m_p_left == NULL)
    return;
  _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_left->m_p_parent == p_nd);
  _GLIBCXX_DEBUG_ASSERT(!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value),
					    PB_DS_V2F(p_nd->m_p_left->m_value)));
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_node_consistent_with_right(const node_pointer p_nd) const
{
  if (p_nd->m_p_right == NULL)
    return;
  _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_right->m_p_parent == p_nd);
  _GLIBCXX_DEBUG_ASSERT(!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_p_right->m_value),
				       PB_DS_V2F(p_nd->m_value)));
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_min() const
{
  assert_min_imp(m_p_head->m_p_parent);
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_min_imp(const node_pointer p_nd) const
{
  if (p_nd == NULL)
    {
      _GLIBCXX_DEBUG_ASSERT(m_p_head->m_p_left == m_p_head);
      return;
    }
 
  if (p_nd->m_p_left == NULL)
    {
      _GLIBCXX_DEBUG_ASSERT(p_nd == m_p_head->m_p_left);
      return;
    }
  assert_min_imp(p_nd->m_p_left);
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_max() const
{
  assert_max_imp(m_p_head->m_p_parent);
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_max_imp(const node_pointer p_nd) const
{
  if (p_nd == NULL)
    {
      _GLIBCXX_DEBUG_ASSERT(m_p_head->m_p_right == m_p_head);
      return;
    }
 
  if (p_nd->m_p_right == NULL)
    {
      _GLIBCXX_DEBUG_ASSERT(p_nd == m_p_head->m_p_right);
      return;
    }
 
  assert_max_imp(p_nd->m_p_right);
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_iterators() const
{
  size_type iterated_num = 0;
  const_iterator prev_it = end();
  for (const_iterator it = begin(); it != end(); ++it)
    {
      ++iterated_num;
      _GLIBCXX_DEBUG_ASSERT(lower_bound(PB_DS_V2F(*it)).m_p_nd == it.m_p_nd);
      const_iterator upper_bound_it = upper_bound(PB_DS_V2F(*it));
      --upper_bound_it;
      _GLIBCXX_DEBUG_ASSERT(upper_bound_it.m_p_nd == it.m_p_nd);
 
      if (prev_it != end())
	_GLIBCXX_DEBUG_ASSERT(Cmp_Fn::operator()(PB_DS_V2F(*prev_it),
						 PB_DS_V2F(*it)));
      prev_it = it;
    }
 
  _GLIBCXX_DEBUG_ASSERT(iterated_num == m_size);
  size_type reverse_iterated_num = 0;
  const_reverse_iterator reverse_prev_it = rend();
  for (const_reverse_iterator reverse_it = rbegin(); reverse_it != rend();
       ++reverse_it)
    {
      ++reverse_iterated_num;
      _GLIBCXX_DEBUG_ASSERT(lower_bound(
				   PB_DS_V2F(*reverse_it)).m_p_nd == reverse_it.m_p_nd);
 
      const_iterator upper_bound_it = upper_bound(PB_DS_V2F(*reverse_it));
      --upper_bound_it;
      _GLIBCXX_DEBUG_ASSERT(upper_bound_it.m_p_nd == reverse_it.m_p_nd);
      if (reverse_prev_it != rend())
	_GLIBCXX_DEBUG_ASSERT(!Cmp_Fn::operator()(PB_DS_V2F(*reverse_prev_it),
						  PB_DS_V2F(*reverse_it)));
      reverse_prev_it = reverse_it;
    }
  _GLIBCXX_DEBUG_ASSERT(reverse_iterated_num == m_size);
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_consistent_with_debug_base() const
{
  debug_base::check_size(m_size);
  assert_consistent_with_debug_base(m_p_head->m_p_parent);
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_consistent_with_debug_base(const node_pointer p_nd) const
{
  if (p_nd == NULL)
    return;
  debug_base::check_key_exists(PB_DS_V2F(p_nd->m_value));
  assert_consistent_with_debug_base(p_nd->m_p_left);
  assert_consistent_with_debug_base(p_nd->m_p_right);
}
 
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
assert_size() const
{
  _GLIBCXX_DEBUG_ASSERT(recursive_count(m_p_head->m_p_parent) == m_size);
}
 
#endif