diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_store_hash_fn_imps.hpp')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_store_hash_fn_imps.hpp | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_store_hash_fn_imps.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_store_hash_fn_imps.hpp new file mode 100644 index 000000000..f4310b629 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_store_hash_fn_imps.hpp @@ -0,0 +1,118 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 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 insert_store_hash_fn_imps.hpp + * Contains implementations of gp_ht_map_'s find related functions, + * when the hash value is stored. + */ + +PB_DS_CLASS_T_DEC +inline typename PB_DS_CLASS_C_DEC::comp_hash +PB_DS_CLASS_C_DEC:: +find_ins_pos(const_key_reference r_key, true_type) +{ + _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();) + comp_hash pos_hash_pair = ranged_probe_fn_base::operator()(r_key); + + size_type i; + + /* The insertion position is initted to a non-legal value to indicate + * that it has not been initted yet. + */ + size_type ins_pos = m_num_e; + resize_base::notify_insert_search_start(); + for (i = 0; i < m_num_e; ++i) + { + const size_type pos = ranged_probe_fn_base::operator()(r_key, pos_hash_pair.second, i); + + entry* const p_e = m_entries + pos; + switch(p_e->m_stat) + { + case empty_entry_status: + { + resize_base::notify_insert_search_end(); + _GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key);) + + return ((ins_pos == m_num_e) ? + std::make_pair(pos, pos_hash_pair.second) : + std::make_pair(ins_pos, pos_hash_pair.second)); + } + break; + case erased_entry_status: + if (ins_pos == m_num_e) + ins_pos = pos; + break; + case valid_entry_status: + if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), p_e->m_hash, + r_key, pos_hash_pair.second)) + { + resize_base::notify_insert_search_end(); + _GLIBCXX_DEBUG_ONLY(debug_base::check_key_exists(r_key);) + return std::make_pair(pos, pos_hash_pair.second); + } + break; + default: + _GLIBCXX_DEBUG_ASSERT(0); + }; + resize_base::notify_insert_search_collision(); + } + resize_base::notify_insert_search_end(); + if (ins_pos == m_num_e) + __throw_insert_error(); + return std::make_pair(ins_pos, pos_hash_pair.second); +} + +PB_DS_CLASS_T_DEC +inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool> +PB_DS_CLASS_C_DEC:: +insert_imp(const_reference r_val, true_type) +{ + const_key_reference r_key = PB_DS_V2F(r_val); + comp_hash pos_hash_pair = find_ins_pos(r_key, + traits_base::m_store_extra_indicator); + + _GLIBCXX_DEBUG_ASSERT(pos_hash_pair.first < m_num_e); + entry_pointer p_e =& m_entries[pos_hash_pair.first]; + if (p_e->m_stat == valid_entry_status) + { + _GLIBCXX_DEBUG_ONLY(debug_base::check_key_exists(r_key)); + return std::make_pair(&p_e->m_value, false); + } + + _GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key)); + return std::make_pair(insert_new_imp(r_val, pos_hash_pair), true); +} + |