| // -*- C++ -*- |
| |
| // Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the terms |
| // of the GNU General Public License as published by the Free Software |
| // Foundation; either version 3, or (at your option) any later |
| // version. |
| |
| // This library is distributed in the hope that it will be useful, but |
| // WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| // General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. |
| |
| // Permission to use, copy, modify, sell, and distribute this software |
| // is hereby granted without fee, provided that the above copyright |
| // notice appears in all copies, and that both that copyright notice |
| // and this permission notice appear in supporting documentation. None |
| // of the above authors, nor IBM Haifa Research Laboratories, make any |
| // representation about the suitability of this software for any |
| // purpose. It is provided "as is" without express or implied |
| // warranty. |
| |
| /** |
| * @file hash_standard_resize_policy_imp.hpp |
| * Contains a resize policy implementation. |
| */ |
| |
| PB_DS_CLASS_T_DEC |
| PB_DS_CLASS_C_DEC:: |
| hash_standard_resize_policy() |
| : m_size(Size_Policy::get_nearest_larger_size(1)) |
| { trigger_policy_base::notify_externally_resized(m_size); } |
| |
| PB_DS_CLASS_T_DEC |
| PB_DS_CLASS_C_DEC:: |
| hash_standard_resize_policy(const Size_Policy& r_size_policy) |
| : Size_Policy(r_size_policy), m_size(Size_Policy::get_nearest_larger_size(1)) |
| { trigger_policy_base::notify_externally_resized(m_size); } |
| |
| PB_DS_CLASS_T_DEC |
| PB_DS_CLASS_C_DEC:: |
| hash_standard_resize_policy(const Size_Policy& r_size_policy, |
| const Trigger_Policy& r_trigger_policy) |
| : Size_Policy(r_size_policy), Trigger_Policy(r_trigger_policy), |
| m_size(Size_Policy::get_nearest_larger_size(1)) |
| { trigger_policy_base::notify_externally_resized(m_size); } |
| |
| PB_DS_CLASS_T_DEC |
| PB_DS_CLASS_C_DEC:: |
| ~hash_standard_resize_policy() |
| { } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| swap(PB_DS_CLASS_C_DEC& other) |
| { |
| trigger_policy_base::swap(other); |
| size_policy_base::swap(other); |
| std::swap(m_size, other.m_size); |
| } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_find_search_start() |
| { trigger_policy_base::notify_find_search_start(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_find_search_collision() |
| { trigger_policy_base::notify_find_search_collision(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_find_search_end() |
| { trigger_policy_base::notify_find_search_end(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_insert_search_start() |
| { trigger_policy_base::notify_insert_search_start(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_insert_search_collision() |
| { trigger_policy_base::notify_insert_search_collision(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_insert_search_end() |
| { trigger_policy_base::notify_insert_search_end(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_erase_search_start() |
| { trigger_policy_base::notify_erase_search_start(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_erase_search_collision() |
| { trigger_policy_base::notify_erase_search_collision(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_erase_search_end() |
| { trigger_policy_base::notify_erase_search_end(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_inserted(size_type num_e) |
| { trigger_policy_base::notify_inserted(num_e); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| notify_erased(size_type num_e) |
| { trigger_policy_base::notify_erased(num_e); } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| notify_cleared() |
| { trigger_policy_base::notify_cleared(); } |
| |
| PB_DS_CLASS_T_DEC |
| inline bool |
| PB_DS_CLASS_C_DEC:: |
| is_resize_needed() const |
| { return trigger_policy_base::is_resize_needed(); } |
| |
| PB_DS_CLASS_T_DEC |
| typename PB_DS_CLASS_C_DEC::size_type |
| PB_DS_CLASS_C_DEC:: |
| get_new_size(size_type size, size_type num_used_e) const |
| { |
| if (trigger_policy_base::is_grow_needed(size, num_used_e)) |
| return size_policy_base::get_nearest_larger_size(size); |
| return size_policy_base::get_nearest_smaller_size(size); |
| } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| notify_resized(size_type new_size) |
| { |
| trigger_policy_base::notify_resized(new_size); |
| m_size = new_size; |
| } |
| |
| PB_DS_CLASS_T_DEC |
| inline typename PB_DS_CLASS_C_DEC::size_type |
| PB_DS_CLASS_C_DEC:: |
| get_actual_size() const |
| { |
| PB_DS_STATIC_ASSERT(access, external_size_access); |
| return m_size; |
| } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| resize(size_type new_size) |
| { |
| PB_DS_STATIC_ASSERT(access, external_size_access); |
| size_type actual_size = size_policy_base::get_nearest_larger_size(1); |
| while (actual_size < new_size) |
| { |
| const size_type pot = size_policy_base::get_nearest_larger_size(actual_size); |
| |
| if (pot == actual_size && pot < new_size) |
| __throw_resize_error(); |
| actual_size = pot; |
| } |
| |
| if (actual_size > 0) |
| --actual_size; |
| |
| const size_type old_size = m_size; |
| __try |
| { |
| do_resize(actual_size - 1); |
| } |
| __catch(insert_error& ) |
| { |
| m_size = old_size; |
| __throw_resize_error(); |
| } |
| __catch(...) |
| { |
| m_size = old_size; |
| __throw_exception_again; |
| } |
| } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| do_resize(size_type) |
| { |
| // Do nothing |
| } |
| |
| PB_DS_CLASS_T_DEC |
| Trigger_Policy& |
| PB_DS_CLASS_C_DEC:: |
| get_trigger_policy() |
| { return *this; } |
| |
| PB_DS_CLASS_T_DEC |
| const Trigger_Policy& |
| PB_DS_CLASS_C_DEC:: |
| get_trigger_policy() const |
| { return *this; } |
| |
| PB_DS_CLASS_T_DEC |
| Size_Policy& |
| PB_DS_CLASS_C_DEC:: |
| get_size_policy() |
| { return *this; } |
| |
| PB_DS_CLASS_T_DEC |
| const Size_Policy& |
| PB_DS_CLASS_C_DEC:: |
| get_size_policy() const |
| { return *this; } |
| |
