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  1. // -*- C++ -*-
  2.  
  3. // Copyright (C) 2005-2015 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>
  101.