diff options
Diffstat (limited to 'libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp')
| -rw-r--r-- | libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp new file mode 100644 index 00000000000..0d627df1855 --- /dev/null +++ b/libstdc++-v3/include/ext/pb_ds/detail/gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp @@ -0,0 +1,140 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006 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 insert_no_store_hash_fn_imps.hpp + * Contains implementations of gp_ht_map_'s insert related functions, when the hash + * value is not stored. + */ + +PB_DS_CLASS_T_DEC +inline typename PB_DS_CLASS_C_DEC::size_type +PB_DS_CLASS_C_DEC:: +find_ins_pos(const_key_reference r_key, store_hash_false_type) +{ + size_type hash = 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, hash, i); + + PB_DS_DBG_ASSERT(pos < m_num_e); + + entry* const p_e = m_a_entries + pos; + + switch(p_e->m_stat) + { + case empty_entry_status: + { + resize_base::notify_insert_search_end(); + + PB_DS_DBG_ONLY( + map_debug_base::check_key_does_not_exist(r_key);) + + return ((ins_pos == m_num_e)? pos : ins_pos); + } + 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), r_key)) + { + resize_base::notify_insert_search_end(); + + PB_DS_DBG_ONLY(map_debug_base::check_key_exists(r_key);) + + return (pos); + } + break; + default: + PB_DS_DBG_ASSERT(0); + }; + + resize_base::notify_insert_search_collision(); + } + + resize_base::notify_insert_search_end(); + + if (ins_pos == m_num_e) + throw insert_error(); + + return (ins_pos); +} + +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, store_hash_false_type) +{ + const_key_reference r_key = PB_DS_V2F(r_val); + + const size_type pos = + find_ins_pos(r_key, traits_base::m_store_extra_indicator); + + if (m_a_entries[pos].m_stat == valid_entry_status) + { + PB_DS_DBG_ONLY(map_debug_base::check_key_exists(r_key);) + + return (std::make_pair( + & (m_a_entries + pos)->m_value, + false)); + } + + PB_DS_DBG_ONLY(map_debug_base::check_key_does_not_exist(r_key)); + + return (std::make_pair( + insert_new_imp(r_val, pos), + true)); +} + |