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 gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp 38 * Contains implementations of gp_ht_map_'s insert related functions, 39 * when the hash value is not stored. 40 */ 41 42 PB_DS_CLASS_T_DEC 43 inline typename PB_DS_CLASS_C_DEC::size_type 44 PB_DS_CLASS_C_DEC:: 45 find_ins_pos(key_const_reference r_key, false_type) 46 { 47 size_type hash = ranged_probe_fn_base::operator()(r_key); 48 size_type i; 49 50 /* The insertion position is initted to a non-legal value to indicate 51 * that it has not been initted yet. 52 */ 53 size_type ins_pos = m_num_e; 54 resize_base::notify_insert_search_start(); 55 for (i = 0; i < m_num_e; ++i) 56 { 57 const size_type pos = ranged_probe_fn_base::operator()(r_key, hash, i); 58 _GLIBCXX_DEBUG_ASSERT(pos < m_num_e); 59 entry* const p_e = m_entries + pos; 60 switch(p_e->m_stat) 61 { 62 case empty_entry_status: 63 { 64 resize_base::notify_insert_search_end(); 65 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key) 66 return (ins_pos == m_num_e) ? pos : ins_pos; 67 } 68 break; 69 case erased_entry_status: 70 if (ins_pos == m_num_e) 71 ins_pos = pos; 72 break; 73 case valid_entry_status: 74 if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key)) 75 { 76 resize_base::notify_insert_search_end(); 77 PB_DS_CHECK_KEY_EXISTS(r_key) 78 return pos; 79 } 80 break; 81 default: 82 _GLIBCXX_DEBUG_ASSERT(0); 83 }; 84 85 resize_base::notify_insert_search_collision(); 86 } 87 resize_base::notify_insert_search_end(); 88 if (ins_pos == m_num_e) 89 __throw_insert_error(); 90 return ins_pos; 91 } 92 93 PB_DS_CLASS_T_DEC 94 inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool> 95 PB_DS_CLASS_C_DEC:: 96 insert_imp(const_reference r_val, false_type) 97 { 98 key_const_reference r_key = PB_DS_V2F(r_val); 99 const size_type pos = find_ins_pos(r_key, 100 traits_base::m_store_extra_indicator); 101 102 if (m_entries[pos].m_stat == valid_entry_status) 103 { 104 PB_DS_CHECK_KEY_EXISTS(r_key) 105 return std::make_pair(&(m_entries + pos)->m_value, false); 106 } 107 108 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key) 109 return std::make_pair(insert_new_imp(r_val, pos), true); 110 } 111 112
