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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 insert_fn_imps.hpp
     38  * Contains an implementation class for a pairing heap.
     39  */
     40 
     41 PB_DS_CLASS_T_DEC
     42 inline typename PB_DS_CLASS_C_DEC::point_iterator
     43 PB_DS_CLASS_C_DEC::
     44 push(const_reference r_val)
     45 {
     46   _GLIBCXX_DEBUG_ONLY(assert_valid();)
     47 
     48     node_pointer p_new_nd = base_type::get_new_node_for_insert(r_val);
     49 
     50   push_imp(p_new_nd);
     51 
     52   _GLIBCXX_DEBUG_ONLY(assert_valid();)
     53 
     54     return point_iterator(p_new_nd);
     55 }
     56 
     57 PB_DS_CLASS_T_DEC
     58 inline void
     59 PB_DS_CLASS_C_DEC::
     60 push_imp(node_pointer p_nd)
     61 {
     62   p_nd->m_p_l_child = 0;
     63 
     64   if (base_type::m_p_root == 0)
     65     {
     66       p_nd->m_p_next_sibling = p_nd->m_p_prev_or_parent = 0;
     67 
     68       base_type::m_p_root = p_nd;
     69     }
     70   else if (Cmp_Fn::operator()(base_type::m_p_root->m_value, p_nd->m_value))
     71     {
     72       p_nd->m_p_next_sibling = p_nd->m_p_prev_or_parent = 0;
     73 
     74       base_type::make_child_of(base_type::m_p_root, p_nd);
     75       _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(p_nd, false));
     76 
     77       base_type::m_p_root = p_nd;
     78     }
     79   else
     80     {
     81       base_type::make_child_of(p_nd, base_type::m_p_root);
     82       _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(base_type::m_p_root, false));
     83     }
     84 }
     85 
     86 PB_DS_CLASS_T_DEC
     87 void
     88 PB_DS_CLASS_C_DEC::
     89 modify(point_iterator it, const_reference r_new_val)
     90 {
     91   _GLIBCXX_DEBUG_ONLY(assert_valid();)
     92 
     93     remove_node(it.m_p_nd);
     94 
     95   it.m_p_nd->m_value = r_new_val;
     96 
     97   push_imp(it.m_p_nd);
     98 
     99   _GLIBCXX_DEBUG_ONLY(assert_valid();)
    100     }
    101 
    102