libstdc++-v3/include/ext/pb_ds/detail/list_update_map_/find_fn_imps.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 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 2, 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 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
  36 // and this permission notice appear in supporting documentation. None
  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
  39 // purpose. It is provided "as is" without express or implied
  40 // warranty.
  41
  42 /**
  43  * @file find_fn_imps.hpp
  44  * Contains implementations of lu_map_.
  45  */
  46
  47 PB_DS_CLASS_T_DEC
  48 inline typename PB_DS_CLASS_C_DEC::entry_pointer
  49 PB_DS_CLASS_C_DEC::
  50 find_imp(const_key_reference r_key) const
  51 {
  52   if (m_p_l == NULL)
  53     return NULL;
  54
  55   if (s_eq_fn(r_key, PB_DS_V2F(m_p_l->m_value)))
  56     {
  57       apply_update(m_p_l, s_metadata_type_indicator);
  58
  59       PB_DS_DBG_ONLY(map_debug_base::check_key_exists(r_key);)
  60
  61         return m_p_l;
  62     }
  63
  64   entry_pointer p_l = m_p_l;
  65
  66   while (p_l->m_p_next != NULL)
  67     {
  68       entry_pointer p_next = p_l->m_p_next;
  69
  70       if (s_eq_fn(r_key, PB_DS_V2F(p_next->m_value)))
  71         {
  72           if (apply_update(p_next, s_metadata_type_indicator))
  73             {
  74               p_l->m_p_next = p_next->m_p_next;
  75
  76               p_next->m_p_next = m_p_l;
  77
  78               m_p_l = p_next;
  79
  80               return m_p_l;
  81             }
  82
  83           return p_next;
  84         }
  85       else
  86         p_l = p_next;
  87     }
  88
  89   PB_DS_DBG_ONLY(map_debug_base::check_key_does_not_exist(r_key);)
  90
  91     return NULL;
  92 }
  93
  94 PB_DS_CLASS_T_DEC
  95 template<typename Metadata>
  96 inline bool
  97 PB_DS_CLASS_C_DEC::
  98 apply_update(entry_pointer p_l, type_to_type<Metadata>)
  99 {
 100   return s_update_policy(p_l->m_update_metadata);
 101 }
 102
 103 PB_DS_CLASS_T_DEC
 104 inline bool
 105 PB_DS_CLASS_C_DEC::
 106 apply_update(entry_pointer, type_to_type<null_lu_metadata>)
 107 {
 108   return s_update_policy(s_null_lu_metadata);
 109 }
 110