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      1 // -*- C++ -*-
      2 
      3 // Copyright (C) 2005, 2006, 2009, 2010 Free Software Foundation, Inc.
      4 //
      5 // This file is part of the GNU ISO C++ Library.  This library is free
      6 // software; you can redistribute it and/or modify it under the terms
      7 // of the GNU General Public License as published by the Free Software
      8 // Foundation; either version 3, or (at your option) any later
      9 // version.
     10 
     11 // This library is distributed in the hope that it will be useful, but
     12 // WITHOUT ANY WARRANTY; without even the implied warranty of
     13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14 // General Public License for more details.
     15 
     16 // Under Section 7 of GPL version 3, you are granted additional
     17 // permissions described in the GCC Runtime Library Exception, version
     18 // 3.1, as published by the Free Software Foundation.
     19 
     20 // You should have received a copy of the GNU General Public License and
     21 // a copy of the GCC Runtime Library Exception along with this program;
     22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     23 // <http://www.gnu.org/licenses/>.
     24 
     25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
     26 
     27 // Permission to use, copy, modify, sell, and distribute this software
     28 // is hereby granted without fee, provided that the above copyright
     29 // notice appears in all copies, and that both that copyright notice
     30 // and this permission notice appear in supporting documentation. None
     31 // of the above authors, nor IBM Haifa Research Laboratories, make any
     32 // representation about the suitability of this software for any
     33 // purpose. It is provided "as is" without express or implied
     34 // warranty.
     35 
     36 /**
     37  * @file debug_fn_imps.hpp
     38  * Contains an implementation for rb_tree_.
     39  */
     40 
     41 #ifdef _GLIBCXX_DEBUG
     42 
     43 PB_DS_CLASS_T_DEC
     44 typename PB_DS_CLASS_C_DEC::size_type
     45 PB_DS_CLASS_C_DEC::
     46 assert_node_consistent(const node_pointer p_nd) const
     47 {
     48   if (p_nd == 0)
     49     return 1;
     50 
     51   const size_type l_height = assert_node_consistent(p_nd->m_p_left);
     52   const size_type r_height = assert_node_consistent(p_nd->m_p_right);
     53   if (p_nd->m_red)
     54     {
     55       _GLIBCXX_DEBUG_ASSERT(is_effectively_black(p_nd->m_p_left));
     56       _GLIBCXX_DEBUG_ASSERT(is_effectively_black(p_nd->m_p_right));
     57     }
     58   _GLIBCXX_DEBUG_ASSERT(l_height == r_height);
     59   return (p_nd->m_red ? 0 : 1) + l_height;
     60 }
     61 
     62 PB_DS_CLASS_T_DEC
     63 void
     64 PB_DS_CLASS_C_DEC::
     65 assert_valid() const
     66 {
     67   base_type::assert_valid();
     68   const node_pointer p_head = base_type::m_p_head;
     69   _GLIBCXX_DEBUG_ASSERT(p_head->m_red);
     70   if (p_head->m_p_parent != 0)
     71     {
     72       _GLIBCXX_DEBUG_ASSERT(!p_head->m_p_parent->m_red);
     73       assert_node_consistent(p_head->m_p_parent);
     74     }
     75 }
     76 
     77 #endif
     78 
     79