insert_fn_imps.hpp revision 285830
1// -*- C++ -*- 2 3// Copyright (C) 2005, 2006 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 2, 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// You should have received a copy of the GNU General Public License 17// along with this library; see the file COPYING. If not, write to 18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19// MA 02111-1307, USA. 20 21// As a special exception, you may use this file as part of a free 22// software library without restriction. Specifically, if other files 23// instantiate templates or use macros or inline functions from this 24// file, or you compile this file and link it with other files to 25// produce an executable, this file does not by itself cause the 26// resulting executable to be covered by the GNU General Public 27// License. This exception does not however invalidate any other 28// reasons why the executable file might be covered by the GNU General 29// Public License. 30 31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32 33// Permission to use, copy, modify, sell, and distribute this software 34// is hereby granted without fee, provided that the above copyright 35// notice appears in all copies, and that both that copyright notice 36// and this permission notice appear in supporting documentation. None 37// of the above authors, nor IBM Haifa Research Laboratories, make any 38// representation about the suitability of this software for any 39// purpose. It is provided "as is" without express or implied 40// warranty. 41 42/** 43 * @file insert_fn_imps.hpp 44 * Contains an implementation class for splay_tree_. 45 */ 46 47PB_DS_CLASS_T_DEC 48inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool> 49PB_DS_CLASS_C_DEC:: 50insert(const_reference r_value) 51{ 52 _GLIBCXX_DEBUG_ONLY(assert_valid();) 53 std::pair<point_iterator, bool> ins_pair = insert_leaf_imp(r_value); 54 ins_pair.first.m_p_nd->m_special = false; 55 _GLIBCXX_DEBUG_ONLY(assert_valid()); 56 splay(ins_pair.first.m_p_nd); 57 _GLIBCXX_DEBUG_ONLY(assert_valid()); 58 return ins_pair; 59} 60 61PB_DS_CLASS_T_DEC 62inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool> 63PB_DS_CLASS_C_DEC:: 64insert_leaf_imp(const_reference r_value) 65{ 66 _GLIBCXX_DEBUG_ONLY(base_type::structure_only_assert_valid();) 67 if (base_type::m_size == 0) 68 return std::make_pair(base_type::insert_imp_empty(r_value), true); 69 70 node_pointer p_nd = base_type::m_p_head->m_p_parent; 71 node_pointer p_pot = base_type::m_p_head; 72 73 while (p_nd != NULL) 74 if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), PB_DS_V2F(r_value))) 75 { 76 if (!Cmp_Fn::operator()(PB_DS_V2F(r_value), PB_DS_V2F(p_nd->m_value))) 77 { 78 return std::make_pair(point_iterator(p_nd), false); 79 } 80 p_pot = p_nd; 81 p_nd = p_nd->m_p_left; 82 } 83 else 84 p_nd = p_nd->m_p_right; 85 86 if (p_pot == base_type::m_p_head) 87 return std::make_pair(base_type::insert_leaf_new(r_value, base_type::m_p_head->m_p_right, false), true); 88 89 _GLIBCXX_DEBUG_ONLY(base_type::check_key_does_not_exist(PB_DS_V2F(r_value))); 90 91 p_nd = p_pot->m_p_left; 92 if (p_nd == NULL) 93 return (std::make_pair(base_type::insert_leaf_new(r_value, p_pot, true), true)); 94 95 while (p_nd->m_p_right != NULL) 96 p_nd = p_nd->m_p_right; 97 98 return std::make_pair(insert_leaf_new(r_value, p_nd, false), true); 99} 100