1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006 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 2, 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// You should have received a copy of the GNU General Public License
17// along with this library; see the file COPYING.  If not, write to
18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19// MA 02111-1307, USA.
20
21// As a special exception, you may use this file as part of a free
22// software library without restriction.  Specifically, if other files
23// instantiate templates or use macros or inline functions from this
24// file, or you compile this file and link it with other files to
25// produce an executable, this file does not by itself cause the
26// resulting executable to be covered by the GNU General Public
27// License.  This exception does not however invalidate any other
28// reasons why the executable file might be covered by the GNU General
29// Public License.
30
31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
32
33// Permission to use, copy, modify, sell, and distribute this software
34// is hereby granted without fee, provided that the above copyright
35// notice appears in all copies, and that both that copyright notice
36// and this permission notice appear in supporting documentation. None
37// of the above authors, nor IBM Haifa Research Laboratories, make any
38// representation about the suitability of this software for any
39// purpose. It is provided "as is" without express or implied
40// warranty.
41
42/**
43 * @file erase_no_store_hash_fn_imps.hpp
44 * Contains implementations of gp_ht_map_'s erase related functions,
45 * when the hash value is not stored.
46 */
47
48PB_DS_CLASS_T_DEC
49inline bool
50PB_DS_CLASS_C_DEC::
51erase_imp(const_key_reference r_key,  false_type)
52{
53  _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();)
54  size_type hash = ranged_probe_fn_base::operator()(r_key);
55  size_type i;
56  resize_base::notify_erase_search_start();
57
58  for (i = 0; i < m_num_e; ++i)
59    {
60      const size_type pos = ranged_probe_fn_base::operator()(r_key,  hash, i);
61      entry* const p_e = m_entries + pos;
62      switch(p_e->m_stat)
63        {
64        case empty_entry_status:
65	  {
66	    resize_base::notify_erase_search_end();
67	    _GLIBCXX_DEBUG_ONLY(map_debug_base::check_key_does_not_exist(
68								    r_key));
69	    return false;
70	  }
71	  break;
72        case valid_entry_status:
73	  if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key))
74            {
75	      resize_base::notify_erase_search_end();
76	      erase_entry(p_e);
77	      do_resize_if_needed_no_throw();
78	      return true;
79            }
80	  break;
81        case erased_entry_status:
82	  break;
83        default:
84	  _GLIBCXX_DEBUG_ASSERT(0);
85        };
86      resize_base::notify_erase_search_collision();
87    }
88  resize_base::notify_erase_search_end();
89  return false;
90}
91
92