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_fn_imps.hpp
44 * Contains implementations of gp_ht_map_'s erase related functions.
45 */
46
47PB_DS_CLASS_T_DEC
48inline void
49PB_DS_CLASS_C_DEC::
50erase_entry(entry_pointer p_e)
51{
52  _GLIBCXX_DEBUG_ASSERT(p_e->m_stat = valid_entry_status);
53  _GLIBCXX_DEBUG_ONLY(map_debug_base::erase_existing(PB_DS_V2F(p_e->m_value));)
54  p_e->m_value.~value_type();
55  p_e->m_stat = erased_entry_status;
56  _GLIBCXX_DEBUG_ASSERT(m_num_used_e > 0);
57  resize_base::notify_erased(--m_num_used_e);
58}
59
60PB_DS_CLASS_T_DEC
61void
62PB_DS_CLASS_C_DEC::
63clear()
64{
65  for (size_type pos = 0; pos < m_num_e; ++pos)
66    {
67      entry_pointer p_e = &m_entries[pos];
68      if (p_e->m_stat == valid_entry_status)
69	erase_entry(p_e);
70    }
71  do_resize_if_needed_no_throw();
72  resize_base::notify_cleared();
73}
74
75PB_DS_CLASS_T_DEC
76template<typename Pred>
77inline typename PB_DS_CLASS_C_DEC::size_type
78PB_DS_CLASS_C_DEC::
79erase_if(Pred pred)
80{
81  _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();)
82  size_type num_ersd = 0;
83  for (size_type pos = 0; pos < m_num_e; ++pos)
84    {
85      entry_pointer p_e = &m_entries[pos];
86      if (p_e->m_stat == valid_entry_status)
87	if (pred(p_e->m_value))
88	  {
89	    ++num_ersd;
90	    erase_entry(p_e);
91	  }
92    }
93
94  do_resize_if_needed_no_throw();
95  _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();)
96  return num_ersd;
97}
98
99PB_DS_CLASS_T_DEC
100inline bool
101PB_DS_CLASS_C_DEC::
102erase(const_key_reference r_key)
103{ return erase_imp(r_key, traits_base::m_store_extra_indicator); }
104
105#include <ext/pb_ds/detail/gp_hash_table_map_/erase_no_store_hash_fn_imps.hpp>
106#include <ext/pb_ds/detail/gp_hash_table_map_/erase_store_hash_fn_imps.hpp>
107