libstdc++
list_update_map_/find_fn_imps.hpp
Go to the documentation of this file.
00001 // -*- C++ -*-
00002 
00003 // Copyright (C) 2005, 2006, 2009, 2010, 2011 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the terms
00007 // of the GNU General Public License as published by the Free Software
00008 // Foundation; either version 3, or (at your option) any later
00009 // version.
00010 
00011 // This library is distributed in the hope that it will be useful, but
00012 // WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 // General Public License for more details.
00015 
00016 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
00026 
00027 // Permission to use, copy, modify, sell, and distribute this software
00028 // is hereby granted without fee, provided that the above copyright
00029 // notice appears in all copies, and that both that copyright notice
00030 // and this permission notice appear in supporting documentation. None
00031 // of the above authors, nor IBM Haifa Research Laboratories, make any
00032 // representation about the suitability of this software for any
00033 // purpose. It is provided "as is" without express or implied
00034 // warranty.
00035 
00036 /**
00037  * @file list_update_map_/find_fn_imps.hpp
00038  * Contains implementations of lu_map_.
00039  */
00040 
00041 PB_DS_CLASS_T_DEC
00042 inline typename PB_DS_CLASS_C_DEC::entry_pointer
00043 PB_DS_CLASS_C_DEC::
00044 find_imp(key_const_reference r_key) const
00045 {
00046   if (m_p_l == 0)
00047     return 0;
00048   if (s_eq_fn(r_key, PB_DS_V2F(m_p_l->m_value)))
00049     {
00050       apply_update(m_p_l, s_metadata_type_indicator);
00051       PB_DS_CHECK_KEY_EXISTS(r_key)
00052       return m_p_l;
00053     }
00054 
00055   entry_pointer p_l = m_p_l;
00056   while (p_l->m_p_next != 0)
00057     {
00058       entry_pointer p_next = p_l->m_p_next;
00059       if (s_eq_fn(r_key, PB_DS_V2F(p_next->m_value)))
00060         {
00061       if (apply_update(p_next, s_metadata_type_indicator))
00062             {
00063           p_l->m_p_next = p_next->m_p_next;
00064           p_next->m_p_next = m_p_l;
00065           m_p_l = p_next;
00066           return m_p_l;
00067             }
00068       return p_next;
00069         }
00070       else
00071     p_l = p_next;
00072     }
00073 
00074   PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
00075   return 0;
00076 }
00077 
00078 PB_DS_CLASS_T_DEC
00079 template<typename Metadata>
00080 inline bool
00081 PB_DS_CLASS_C_DEC::
00082 apply_update(entry_pointer p_l, type_to_type<Metadata>)
00083 { return s_update_policy(p_l->m_update_metadata); }
00084 
00085 PB_DS_CLASS_T_DEC
00086 inline bool
00087 PB_DS_CLASS_C_DEC::
00088 apply_update(entry_pointer, type_to_type<null_type>)
00089 { return s_update_policy(s_null_type); }
00090