1// -*- C++ -*-
2
3// Copyright (C) 2005-2015 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
42PB_DS_CLASS_T_DEC
43inline bool
44PB_DS_CLASS_C_DEC::
45erase_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