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

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2019 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 list_update_map_/find_fn_imps.hpp
  38  * Contains implementations of lu_map_.
  39  */
  40
  41 #ifdef PB_DS_CLASS_C_DEC
  42
  43 PB_DS_CLASS_T_DEC
  44 inline typename PB_DS_CLASS_C_DEC::entry_pointer
  45 PB_DS_CLASS_C_DEC::
  46 find_imp(key_const_reference r_key) const
  47 {
  48   if (m_p_l == 0)
  49     return 0;
  50   if (s_eq_fn(r_key, PB_DS_V2F(m_p_l->m_value)))
  51     {
  52       apply_update(m_p_l, s_metadata_type_indicator);
  53       PB_DS_CHECK_KEY_EXISTS(r_key)
  54       return m_p_l;
  55     }
  56
  57   entry_pointer p_l = m_p_l;
  58   while (p_l->m_p_next != 0)
  59     {
  60       entry_pointer p_next = p_l->m_p_next;
  61       if (s_eq_fn(r_key, PB_DS_V2F(p_next->m_value)))
  62         {
  63           if (apply_update(p_next, s_metadata_type_indicator))
  64             {
  65               p_l->m_p_next = p_next->m_p_next;
  66               p_next->m_p_next = m_p_l;
  67               m_p_l = p_next;
  68               return m_p_l;
  69             }
  70           return p_next;
  71         }
  72       else
  73         p_l = p_next;
  74     }
  75
  76   PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
  77   return 0;
  78 }
  79
  80 PB_DS_CLASS_T_DEC
  81 template<typename Metadata>
  82 inline bool
  83 PB_DS_CLASS_C_DEC::
  84 apply_update(entry_pointer p_l, type_to_type<Metadata>)
  85 { return s_update_policy(p_l->m_update_metadata); }
  86
  87 PB_DS_CLASS_T_DEC
  88 inline bool
  89 PB_DS_CLASS_C_DEC::
  90 apply_update(entry_pointer, type_to_type<null_type>)
  91 { return s_update_policy(s_null_type); }
  92
  93 #endif