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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 left_child_next_sibling_heap_.

 */

#ifdef _GLIBCXX_DEBUG

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

assert_valid() const

{

  _GLIBCXX_DEBUG_ASSERT(m_p_root == NULL || m_p_root->m_p_prev_or_parent == NULL);

  if (m_p_root != NULL)

    assert_node_consistent(m_p_root, Single_Link_Roots);

  assert_size();

  assert_iterators();

}

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

assert_node_consistent(const_node_pointer p_nd, bool single_link) const

{

  if (p_nd == NULL)

    return;

  assert_node_consistent(p_nd->m_p_l_child, false);

  assert_node_consistent(p_nd->m_p_next_sibling, single_link);

  if (single_link)

    _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_prev_or_parent == NULL);

  else if (p_nd->m_p_next_sibling != NULL)

    _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_next_sibling->m_p_prev_or_parent == p_nd);

  if (p_nd->m_p_l_child == NULL)

    return;

  const_node_pointer p_child = p_nd->m_p_l_child;

  while (p_child != NULL)

    {

      const_node_pointer p_next_child = p_child->m_p_next_sibling;

      _GLIBCXX_DEBUG_ASSERT(!Cmp_Fn::operator()(p_nd->m_value, p_child->m_value));

      p_child = p_next_child;

    }

  _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_l_child->m_p_prev_or_parent == p_nd);

}

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

assert_iterators() const

{

  const size_type calc_size = std::distance(begin(), end());

  if (calc_size == size())

    return;

  _GLIBCXX_DEBUG_ASSERT(0);

}

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

assert_size() const

{

  if (size_from_node(m_p_root) == m_size)

    return;

  _GLIBCXX_DEBUG_ASSERT(0);

}

PB_DS_CLASS_T_DEC

typename PB_DS_CLASS_C_DEC::size_type

PB_DS_CLASS_C_DEC::

size_under_node(const_node_pointer p_nd)

{ return 1 + size_from_node(p_nd->m_p_l_child); }

PB_DS_CLASS_T_DEC

typename PB_DS_CLASS_C_DEC::size_type

PB_DS_CLASS_C_DEC::

size_from_node(const_node_pointer p_nd)

{

  size_type ret = 0;

  while (p_nd != NULL)

    {

      ret += 1 + size_from_node(p_nd->m_p_l_child);

      p_nd = p_nd->m_p_next_sibling;

    }

  return ret;

}

PB_DS_CLASS_T_DEC

typename PB_DS_CLASS_C_DEC::size_type

PB_DS_CLASS_C_DEC::

degree(const_node_pointer p_nd)

{

  size_type ret = 0;

  const_node_pointer p_child = p_nd->m_p_l_child;

  while (p_child != NULL)

    {

      ++ret;

      p_child = p_child->m_p_next_sibling;

    }

  return ret;

}

#endif