libstdc++

gp_hash_table_map_/erase_fn_imps.hpp
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1 // -*- C++ -*-
2
3 // Copyright (C) 2005-2013 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 gp_hash_table_map_/erase_fn_imps.hpp
38 * Contains implementations of gp_ht_map_'s erase related functions.
39 */
40
41 PB_DS_CLASS_T_DEC
42 inline void
43 PB_DS_CLASS_C_DEC::
44 erase_entry(entry_pointer p_e)
45 {
46 _GLIBCXX_DEBUG_ASSERT(p_e->m_stat = valid_entry_status);
47 _GLIBCXX_DEBUG_ONLY(debug_base::erase_existing(PB_DS_V2F(p_e->m_value));)
48 p_e->m_value.~value_type();
49 p_e->m_stat = erased_entry_status;
50 _GLIBCXX_DEBUG_ASSERT(m_num_used_e > 0);
51 resize_base::notify_erased(--m_num_used_e);
52 }
53
54 PB_DS_CLASS_T_DEC
55 void
56 PB_DS_CLASS_C_DEC::
57 clear()
58 {
59 for (size_type pos = 0; pos < m_num_e; ++pos)
60 {
61 entry_pointer p_e = &m_entries[pos];
62 if (p_e->m_stat == valid_entry_status)
63 erase_entry(p_e);
64 }
65 do_resize_if_needed_no_throw();
66 resize_base::notify_cleared();
67 }
68
69 PB_DS_CLASS_T_DEC
70 template<typename Pred>
71 inline typename PB_DS_CLASS_C_DEC::size_type
72 PB_DS_CLASS_C_DEC::
73 erase_if(Pred pred)
74 {
75 PB_DS_ASSERT_VALID((*this))
76 size_type num_ersd = 0;
77 for (size_type pos = 0; pos < m_num_e; ++pos)
78 {
79 entry_pointer p_e = &m_entries[pos];
80 if (p_e->m_stat == valid_entry_status)
81 if (pred(p_e->m_value))
82 {
83 ++num_ersd;
84 erase_entry(p_e);
85 }
86 }
87
88 do_resize_if_needed_no_throw();
89 PB_DS_ASSERT_VALID((*this))
90 return num_ersd;
91 }
92
93 PB_DS_CLASS_T_DEC
94 inline bool
95 PB_DS_CLASS_C_DEC::
96 erase(key_const_reference r_key)
97 { return erase_imp(r_key, traits_base::m_store_extra_indicator); }
98
99 #include <ext/pb_ds/detail/gp_hash_table_map_/erase_no_store_hash_fn_imps.hpp>
100 #include <ext/pb_ds/detail/gp_hash_table_map_/erase_store_hash_fn_imps.hpp>