diff options
Diffstat (limited to 'libstdc++-v3/include/ext/pb_assoc/detail/cc_ht_map_/erase_no_store_hash_fn_imps.hpp')
| -rw-r--r-- | libstdc++-v3/include/ext/pb_assoc/detail/cc_ht_map_/erase_no_store_hash_fn_imps.hpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_assoc/detail/cc_ht_map_/erase_no_store_hash_fn_imps.hpp b/libstdc++-v3/include/ext/pb_assoc/detail/cc_ht_map_/erase_no_store_hash_fn_imps.hpp new file mode 100644 index 00000000000..1b3e3c5e330 --- /dev/null +++ b/libstdc++-v3/include/ext/pb_assoc/detail/cc_ht_map_/erase_no_store_hash_fn_imps.hpp @@ -0,0 +1,159 @@ +// -*- C++ -*- + +// Copyright (C) 2005 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 2, 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. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// As a special exception, you may use this file as part of a free software +// library without restriction. Specifically, if other files instantiate +// templates or use macros or inline functions from this file, or you compile +// this file and link it with other files to produce an executable, this +// file does not by itself cause the resulting executable to be covered by +// the GNU General Public License. This exception does not however +// invalidate any other reasons why the executable file might be covered by +// the GNU General Public License. + +// 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 erase_no_store_hash_fn_imps.hpp + * Contains implementations of cc_ht_map_'s erase related functions, when the hash + * value is not stored. + */ + +PB_ASSOC_CLASS_T_DEC +template<class T> +inline typename PB_ASSOC_CLASS_C_DEC::size_type +PB_ASSOC_CLASS_C_DEC:: +erase(T r_t, bool erase_entry_if_last, pb_assoc::detail::int_to_type<false>) +{ + PB_ASSOC_DBG_ONLY(assert_valid();) + + return (erase_in_pos_imp<T>(r_t, + erase_entry_if_last, + my_ranged_hash_fn_base::operator()( + my_traits_base::ext_eraser::extract_key(r_t)))); +} + +PB_ASSOC_CLASS_T_DEC +template<class T> +inline typename PB_ASSOC_CLASS_C_DEC::size_type +PB_ASSOC_CLASS_C_DEC:: +erase_in_pos_imp(T r_t, bool erase_entry_if_last, size_type pos) +{ + PB_ASSOC_DBG_ONLY(assert_valid();) + + entry_pointer p_e = m_a_p_entries[pos]; + + my_resize_base::notify_erase_search_start(); + + if (p_e == NULL) + { + my_resize_base::notify_erase_search_end(); + + PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_does_not_exist( + ext_eraser::extract_key(r_t));) + + PB_ASSOC_DBG_ONLY(assert_valid();) + + return (0); + } + + if (my_hash_eq_fn_base::operator()( + p_e->m_value.first, + my_traits_base::ext_eraser::extract_key(r_t))) + { + my_resize_base::notify_erase_search_end(); + + PB_ASSOC_DBG_ONLY(my_map_debug_base:: + check_key_exists(my_traits_base::ext_eraser::extract_key(r_t));) + + std::pair<size_type, bool> ers_pair = + my_traits_base::ext_eraser::erase( + PB_ASSOC_EP2VP(m_a_p_entries[pos]), + r_t, erase_entry_if_last); + + if (ers_pair.second) + { + erase_entry_pointer(m_a_p_entries[pos]); + + do_resize_if_needed_no_throw(); + } + + PB_ASSOC_DBG_ONLY(assert_valid();) + + return (ers_pair.first); + } + + while (true) + { + entry_pointer p_next_e = p_e->m_p_next; + + if (p_next_e == NULL) + { + my_resize_base::notify_erase_search_end(); + + PB_ASSOC_DBG_ONLY(my_map_debug_base:: + check_key_does_not_exist( + my_traits_base::ext_eraser::extract_key(r_t));) + + PB_ASSOC_DBG_ONLY(assert_valid();) + + return (0); + } + + if (my_hash_eq_fn_base::operator()( + p_next_e->m_value.first, + my_traits_base::ext_eraser::extract_key(r_t))) + { + my_resize_base::notify_erase_search_end(); + + PB_ASSOC_DBG_ONLY(my_map_debug_base:: + check_key_exists( + my_traits_base::ext_eraser::extract_key(r_t));) + + std::pair<size_type, bool> ers_pair = + my_traits_base::ext_eraser::erase( + PB_ASSOC_EP2VP(p_e->m_p_next), + r_t, erase_entry_if_last); + + if (ers_pair.second) + { + erase_entry_pointer(p_e->m_p_next); + + do_resize_if_needed_no_throw(); + } + + PB_ASSOC_DBG_ONLY(assert_valid();) + + return (ers_pair.first); + } + + my_resize_base::notify_erase_search_collision(); + + p_e = p_next_e; + } +} + |