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 cc_hash_table_map_/erase_fn_imps.hpp
38 * Contains implementations of cc_ht_map_'s erase related functions.
39 */
40
41PB_DS_CLASS_T_DEC
42inline void
43PB_DS_CLASS_C_DEC::
44erase_entry_pointer(entry_pointer& r_p_e)
45{
46  _GLIBCXX_DEBUG_ONLY(debug_base::erase_existing(PB_DS_V2F(r_p_e->m_value)));
47
48  entry_pointer p_e = r_p_e;
49  r_p_e = r_p_e->m_p_next;
50  rels_entry(p_e);
51  _GLIBCXX_DEBUG_ASSERT(m_num_used_e > 0);
52  resize_base::notify_erased(--m_num_used_e);
53}
54
55PB_DS_CLASS_T_DEC
56template<typename Pred>
57inline typename PB_DS_CLASS_C_DEC::size_type
58PB_DS_CLASS_C_DEC::
59erase_if(Pred pred)
60{
61  size_type num_ersd = 0;
62  for (size_type pos = 0; pos < m_num_e; ++pos)
63    {
64      while (m_entries[pos] != 0 && pred(m_entries[pos]->m_value))
65        {
66	  ++num_ersd;
67	  entry_pointer p_next_e = m_entries[pos]->m_p_next;
68	  erase_entry_pointer(m_entries[pos]);
69	  m_entries[pos] = p_next_e;
70        }
71
72      entry_pointer p_e = m_entries[pos];
73      while (p_e != 0 && p_e->m_p_next != 0)
74        {
75	  if (pred(p_e->m_p_next->m_value))
76            {
77	      ++num_ersd;
78	      erase_entry_pointer(p_e->m_p_next);
79            }
80	  else
81	    p_e = p_e->m_p_next;
82        }
83    }
84
85  do_resize_if_needed_no_throw();
86  return num_ersd;
87}
88
89PB_DS_CLASS_T_DEC
90void
91PB_DS_CLASS_C_DEC::
92clear()
93{
94  for (size_type pos = 0; pos < m_num_e; ++pos)
95    while (m_entries[pos] != 0)
96      erase_entry_pointer(m_entries[pos]);
97  do_resize_if_needed_no_throw();
98  resize_base::notify_cleared();
99}
100
101#include <ext/pb_ds/detail/cc_hash_table_map_/erase_no_store_hash_fn_imps.hpp>
102#include <ext/pb_ds/detail/cc_hash_table_map_/erase_store_hash_fn_imps.hpp>
103
104