1// -*- C++ -*-
2
3// Copyright (C) 2005 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
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
31
32// Permission to use, copy, modify, sell, and distribute this software
33// is hereby granted without fee, provided that the above copyright
34// notice appears in all copies, and that both that copyright notice and
35// this permission notice appear in supporting documentation. None of
36// the above authors, nor IBM Haifa Research Laboratories, make any
37// representation about the suitability of this software for any
38// purpose. It is provided "as is" without express or implied warranty.
39
40/**
41 * @file erase_no_store_hash_fn_imps.hpp
42 * Contains implementations of gp_ht_map_'s erase related functions, when the hash
43 *	value is not stored.
44 */
45
46PB_ASSOC_CLASS_T_DEC
47inline typename PB_ASSOC_CLASS_C_DEC::size_type
48PB_ASSOC_CLASS_C_DEC::
49erase(const_key_reference r_key, int_to_type<false>)
50{
51  PB_ASSOC_DBG_ONLY(PB_ASSOC_CLASS_C_DEC::assert_valid();)
52
53    size_type hash = my_ranged_probe_fn_base::operator()(r_key);
54
55  size_type i;
56
57  my_resize_base::notify_erase_search_start();
58
59  for (i = 0; i < m_num_e; ++i)
60    {
61      const size_type pos =
62	my_ranged_probe_fn_base::operator()(r_key, hash, i);
63
64      entry* const p_e = m_a_entries + pos;
65
66      switch(p_e->m_stat)
67	{
68	case EMPTY_ENTRY_STATUS:
69	  {
70	    my_resize_base::notify_erase_search_end();
71
72	    PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_does_not_exist(
73									  r_key));
74
75	    return (0);
76	  }
77	  break;
78	case VALID_ENTRY_STATUS:
79	  if (my_hash_eq_fn_base::operator()(
80					     PB_ASSOC_V2F(p_e->m_value)))
81	    {
82	      my_resize_base::notify_erase_search_end();
83
84	      erase_entry(p_e);
85
86	      do_resize_if_needed_no_throw();
87
88	      return (1);
89	    }
90	  break;
91	case ERASED_ENTRY_STATUS:
92	  break;
93	default:
94	  PB_ASSOC_DBG_ASSERT(0);
95	};
96
97      my_resize_base::notify_erase_search_collision();
98    }
99
100  my_resize_base::notify_erase_search_end();
101
102  return (0);
103}
104
105