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_store_hash_fn_imps.hpp
42 * Contains implementations of gp_ht_map_'s erase related functions, when the hash
43 *	value is 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<true>)
50{
51  PB_ASSOC_DBG_ONLY(PB_ASSOC_CLASS_C_DEC::assert_valid();)
52
53    PB_ASSOC_DBG_ONLY(assert_valid();)
54
55    return (erase_in_pos_imp(r_key, 0));
56}
57
58PB_ASSOC_CLASS_T_DEC
59inline typename PB_ASSOC_CLASS_C_DEC::size_type
60PB_ASSOC_CLASS_C_DEC::
61erase_in_pos_imp(const_key_reference r_key, const comp_hash& /*r_pos_hash_pair*/)
62{
63  const comp_hash pos_hash_pair =
64    my_ranged_probe_fn_base::operator()(r_key);
65
66  for (size_type i = 0; i < m_num_e; ++i)
67    {
68      const size_type pos = my_ranged_probe_fn_base::operator()(r_key, pos_hash_pair.second, i);
69
70      entry* const p_e = m_a_entries + pos;
71
72      switch(p_e->m_stat)
73	{
74	case EMPTY_ENTRY_STATUS:
75	  {
76	    my_resize_base::notify_erase_search_end();
77
78	    PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_does_not_exist(
79									  r_key));
80
81	    return (0);
82	  }
83	  break;
84	case VALID_ENTRY_STATUS:
85	  if (my_hash_eq_fn_base::operator()(p_e->m_value.first, p_e->m_hash, r_key, pos_hash_pair.second))
86	    {
87	      my_resize_base::notify_erase_search_end();
88
89	      erase_entry(p_e);
90
91	      do_resize_if_needed_no_throw();
92
93	      return (1);
94	    }
95	  break;
96	case ERASED_ENTRY_STATUS:
97	  break;
98	default:
99	  PB_ASSOC_DBG_ASSERT(0);
100	};
101
102      my_resize_base::notify_erase_search_collision();
103    }
104
105  my_resize_base::notify_erase_search_end();
106
107  return (0);
108}
109
110