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_store_hash_fn_imps.hpp
44 * Contains implementations of gp_ht_map_'s erase related functions,
45 * when the hash value is stored.
46 */
47
48 PB_DS_CLASS_T_DEC
49 inline bool
50 PB_DS_CLASS_C_DEC::
erase_imp(const_key_reference r_key,true_type)51 erase_imp(const_key_reference r_key, true_type)
52 {
53 const comp_hash pos_hash_pair = ranged_probe_fn_base::operator()(r_key);
54 size_type i;
55 resize_base::notify_erase_search_start();
56 for (i = 0; i < m_num_e; ++i)
57 {
58 const size_type pos = ranged_probe_fn_base::operator()(r_key, pos_hash_pair.second, i);
59
60 entry* const p_e = m_entries + pos;
61 switch(p_e->m_stat)
62 {
63 case empty_entry_status:
64 {
65 resize_base::notify_erase_search_end();
66 _GLIBCXX_DEBUG_ONLY(map_debug_base::check_key_does_not_exist(
67 r_key));
68 return false;
69 }
70 break;
71 case valid_entry_status:
72 if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), p_e->m_hash,
73 r_key, pos_hash_pair.second))
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
87 resize_base::notify_erase_search_collision();
88 }
89 resize_base::notify_erase_search_end();
90 return false;
91 }
92
93