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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