libstdc++
gp_hash_table_map_/erase_fn_imps.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2020 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.
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11 // This library is distributed in the hope that it will be useful, but
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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
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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
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35 
36 /**
37  * @file gp_hash_table_map_/erase_fn_imps.hpp
38  * Contains implementations of gp_ht_map_'s erase related functions.
39  */
40 
41 #ifdef PB_DS_CLASS_C_DEC
42 
43 PB_DS_CLASS_T_DEC
44 inline void
45 PB_DS_CLASS_C_DEC::
46 erase_entry(entry_pointer p_e)
47 {
48  _GLIBCXX_DEBUG_ASSERT(p_e->m_stat = valid_entry_status);
49  _GLIBCXX_DEBUG_ONLY(debug_base::erase_existing(PB_DS_V2F(p_e->m_value));)
50  p_e->m_value.~value_type();
51  p_e->m_stat = erased_entry_status;
52  _GLIBCXX_DEBUG_ASSERT(m_num_used_e > 0);
53  resize_base::notify_erased(--m_num_used_e);
54 }
55 
56 PB_DS_CLASS_T_DEC
57 void
58 PB_DS_CLASS_C_DEC::
59 clear()
60 {
61  for (size_type pos = 0; pos < m_num_e; ++pos)
62  {
63  entry_pointer p_e = &m_entries[pos];
64  if (p_e->m_stat == valid_entry_status)
65  erase_entry(p_e);
66  }
67  do_resize_if_needed_no_throw();
68  resize_base::notify_cleared();
69 }
70 
71 PB_DS_CLASS_T_DEC
72 template<typename Pred>
73 inline typename PB_DS_CLASS_C_DEC::size_type
74 PB_DS_CLASS_C_DEC::
75 erase_if(Pred pred)
76 {
77  PB_DS_ASSERT_VALID((*this))
78  size_type num_ersd = 0;
79  for (size_type pos = 0; pos < m_num_e; ++pos)
80  {
81  entry_pointer p_e = &m_entries[pos];
82  if (p_e->m_stat == valid_entry_status)
83  if (pred(p_e->m_value))
84  {
85  ++num_ersd;
86  erase_entry(p_e);
87  }
88  }
89 
90  do_resize_if_needed_no_throw();
91  PB_DS_ASSERT_VALID((*this))
92  return num_ersd;
93 }
94 
95 PB_DS_CLASS_T_DEC
96 inline bool
97 PB_DS_CLASS_C_DEC::
98 erase(key_const_reference r_key)
99 { return erase_imp(r_key, traits_base::m_store_extra_indicator); }
100 
103 #endif