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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 cc_hash_table_map_/erase_fn_imps.hpp
  38.  * Contains implementations of cc_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_pointer(entry_pointer& r_p_e)
  45. {
  46.   _GLIBCXX_DEBUG_ONLY(debug_base::erase_existing(PB_DS_V2F(r_p_e->m_value)));
  47.  
  48.   entry_pointer p_e = r_p_e;
  49.   r_p_e = r_p_e->m_p_next;
  50.   rels_entry(p_e);
  51.   _GLIBCXX_DEBUG_ASSERT(m_num_used_e > 0);
  52.   resize_base::notify_erased(--m_num_used_e);
  53. }
  54.  
  55. PB_DS_CLASS_T_DEC
  56. template<typename Pred>
  57. inline typename PB_DS_CLASS_C_DEC::size_type
  58. PB_DS_CLASS_C_DEC::
  59. erase_if(Pred pred)
  60. {
  61.   size_type num_ersd = 0;
  62.   for (size_type pos = 0; pos < m_num_e; ++pos)
  63.     {
  64.       while (m_entries[pos] != 0 && pred(m_entries[pos]->m_value))
  65.         {
  66.           ++num_ersd;
  67.           entry_pointer p_next_e = m_entries[pos]->m_p_next;
  68.           erase_entry_pointer(m_entries[pos]);
  69.           m_entries[pos] = p_next_e;
  70.         }
  71.  
  72.       entry_pointer p_e = m_entries[pos];
  73.       while (p_e != 0 && p_e->m_p_next != 0)
  74.         {
  75.           if (pred(p_e->m_p_next->m_value))
  76.             {
  77.               ++num_ersd;
  78.               erase_entry_pointer(p_e->m_p_next);
  79.             }
  80.           else
  81.             p_e = p_e->m_p_next;
  82.         }
  83.     }
  84.  
  85.   do_resize_if_needed_no_throw();
  86.   return num_ersd;
  87. }
  88.  
  89. PB_DS_CLASS_T_DEC
  90. void
  91. PB_DS_CLASS_C_DEC::
  92. clear()
  93. {
  94.   for (size_type pos = 0; pos < m_num_e; ++pos)
  95.     while (m_entries[pos] != 0)
  96.       erase_entry_pointer(m_entries[pos]);
  97.   do_resize_if_needed_no_throw();
  98.   resize_base::notify_cleared();
  99. }
  100.  
  101. #include <ext/pb_ds/detail/cc_hash_table_map_/erase_no_store_hash_fn_imps.hpp>
  102. #include <ext/pb_ds/detail/cc_hash_table_map_/erase_store_hash_fn_imps.hpp>
  103.  
  104.