mingw/lib/gcc/mingw32/4.3.3/include/c++/ext/pb_ds/detail/cc_hash_table_map_/erase_store_hash_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 erase_store_hash_fn_imps.hpp
  44  * Contains implementations of cc_ht_map_'s erase related functions,
  45  * when the hash value is stored.
  46  */
  47
  48 PB_DS_CLASS_T_DEC
  49 inline bool
  50 PB_DS_CLASS_C_DEC::
  51 erase_in_pos_imp(const_key_reference r_key, const comp_hash& r_pos_hash_pair)
  52 {
  53   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  54   entry_pointer p_e = m_entries[r_pos_hash_pair.first];
  55   resize_base::notify_erase_search_start();
  56   if (p_e == NULL)
  57     {
  58       resize_base::notify_erase_search_end();
  59       _GLIBCXX_DEBUG_ONLY(debug_base:: check_key_does_not_exist(r_key);)
  60       _GLIBCXX_DEBUG_ONLY(assert_valid();)
  61       return false;
  62     }
  63
  64   if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), p_e->m_hash,
  65                                   r_key, r_pos_hash_pair.second))
  66     {
  67       resize_base::notify_erase_search_end();
  68       _GLIBCXX_DEBUG_ONLY(debug_base::check_key_exists(r_key);)
  69       erase_entry_pointer(m_entries[r_pos_hash_pair.first]);
  70       do_resize_if_needed_no_throw();
  71       _GLIBCXX_DEBUG_ONLY(assert_valid();)
  72       return true;
  73     }
  74
  75   while (true)
  76     {
  77       entry_pointer p_next_e = p_e->m_p_next;
  78       if (p_next_e == NULL)
  79         {
  80           resize_base::notify_erase_search_end();
  81           _GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key);)
  82           _GLIBCXX_DEBUG_ONLY(assert_valid();)
  83           return false;
  84         }
  85
  86       if (hash_eq_fn_base::operator()(PB_DS_V2F(p_next_e->m_value),
  87                                       p_next_e->m_hash, r_key,
  88                                       r_pos_hash_pair.second))
  89         {
  90           resize_base::notify_erase_search_end();
  91           _GLIBCXX_DEBUG_ONLY(debug_base::check_key_exists(r_key);)
  92           erase_entry_pointer(p_e->m_p_next);
  93           do_resize_if_needed_no_throw();
  94           _GLIBCXX_DEBUG_ONLY(assert_valid();)
  95           return true;
  96         }
  97       resize_base::notify_erase_search_collision();
  98       p_e = p_next_e;
  99     }
 100 }
 101