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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 for rb_tree_.

 */

#ifdef _GLIBCXX_DEBUG

PB_DS_CLASS_T_DEC

typename PB_DS_CLASS_C_DEC::size_type

PB_DS_CLASS_C_DEC::

assert_node_consistent(const node_pointer p_nd) const

{

  if (p_nd == NULL)

    return 1;

  const size_type l_height = assert_node_consistent(p_nd->m_p_left);

  const size_type r_height = assert_node_consistent(p_nd->m_p_right);

  if (p_nd->m_red)

    {

      _GLIBCXX_DEBUG_ASSERT(is_effectively_black(p_nd->m_p_left));

      _GLIBCXX_DEBUG_ASSERT(is_effectively_black(p_nd->m_p_right));

    }

  _GLIBCXX_DEBUG_ASSERT(l_height == r_height);

  return (p_nd->m_red ? 0 : 1) + l_height;

}

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

assert_valid() const

{

  base_type::assert_valid();

  const node_pointer p_head = base_type::m_p_head;

  _GLIBCXX_DEBUG_ASSERT(p_head->m_red);

  if (p_head->m_p_parent != NULL)

    {

      _GLIBCXX_DEBUG_ASSERT(!p_head->m_p_parent->m_red);

      assert_node_consistent(p_head->m_p_parent);

    }

}

#endif