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  1. // -*- C++ -*-
  2.  
  3. // Copyright (C) 2005-2013 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 gp_hash_table_map_/erase_no_store_hash_fn_imps.hpp
  38.  * Contains implementations of gp_ht_map_'s erase related functions,
  39.  * when the hash value is not stored.
  40.  */
  41.  
  42. PB_DS_CLASS_T_DEC
  43. inline bool
  44. PB_DS_CLASS_C_DEC::
  45. erase_imp(key_const_reference r_key,  false_type)
  46. {
  47.   PB_DS_ASSERT_VALID((*this))
  48.   size_type hash = ranged_probe_fn_base::operator()(r_key);
  49.   size_type i;
  50.   resize_base::notify_erase_search_start();
  51.  
  52.   for (i = 0; i < m_num_e; ++i)
  53.     {
  54.       const size_type pos = ranged_probe_fn_base::operator()(r_key,  hash, i);
  55.       entry* const p_e = m_entries + pos;
  56.       switch(p_e->m_stat)
  57.         {
  58.         case empty_entry_status:
  59.           {
  60.             resize_base::notify_erase_search_end();
  61.             PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
  62.             return false;
  63.           }
  64.           break;
  65.         case valid_entry_status:
  66.           if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key))
  67.             {
  68.               resize_base::notify_erase_search_end();
  69.               erase_entry(p_e);
  70.               do_resize_if_needed_no_throw();
  71.               return true;
  72.             }
  73.           break;
  74.         case erased_entry_status:
  75.           break;
  76.         default:
  77.           _GLIBCXX_DEBUG_ASSERT(0);
  78.         };
  79.       resize_base::notify_erase_search_collision();
  80.     }
  81.   resize_base::notify_erase_search_end();
  82.   return false;
  83. }
  84.  
  85.