libstdc++
gp_hash_table_map_/erase_store_hash_fn_imps.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2017 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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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.
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20 // You should have received a copy of the GNU General Public License and
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24 
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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28 // is hereby granted without fee, provided that the above copyright
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35 
36 /**
37  * @file gp_hash_table_map_/erase_store_hash_fn_imps.hpp
38  * Contains implementations of gp_ht_map_'s erase related functions,
39  * when the hash value is stored.
40  */
41 
42 PB_DS_CLASS_T_DEC
43 inline bool
44 PB_DS_CLASS_C_DEC::
45 erase_imp(key_const_reference r_key, true_type)
46 {
47  const comp_hash pos_hash_pair = ranged_probe_fn_base::operator()(r_key);
48  size_type i;
49  resize_base::notify_erase_search_start();
50  for (i = 0; i < m_num_e; ++i)
51  {
52  const size_type pos = ranged_probe_fn_base::operator()(r_key, pos_hash_pair.second, i);
53 
54  entry* const p_e = m_entries + pos;
55  switch(p_e->m_stat)
56  {
57  case empty_entry_status:
58  {
59  resize_base::notify_erase_search_end();
60  PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
61  return false;
62  }
63  break;
64  case valid_entry_status:
65  if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), p_e->m_hash,
66  r_key, pos_hash_pair.second))
67  {
68  resize_base::notify_erase_search_end();
69  erase_entry(p_e);
70  do_resize_if_needed_no_throw();
71  return true;
72  }
73  break;
74  case erased_entry_status:
75  break;
76  default:
77  _GLIBCXX_DEBUG_ASSERT(0);
78  };
79 
80  resize_base::notify_erase_search_collision();
81  }
82  resize_base::notify_erase_search_end();
83  return false;
84 }
85 
integral_constant< bool, true > true_type
The type used as a compile-time boolean with true value.
Definition: type_traits:87