libstdc++
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00001 // -*- C++ -*- 00002 00003 // Copyright (C) 2005, 2006, 2009, 2010, 2011 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the terms 00007 // of the GNU General Public License as published by the Free Software 00008 // Foundation; either version 3, or (at your option) any later 00009 // version. 00010 00011 // This library is distributed in the hope that it will be useful, but 00012 // WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 // General Public License for more details. 00015 00016 // Under Section 7 of GPL version 3, you are granted additional 00017 // permissions described in the GCC Runtime Library Exception, version 00018 // 3.1, as published by the Free Software Foundation. 00019 00020 // You should have received a copy of the GNU General Public License and 00021 // a copy of the GCC Runtime Library Exception along with this program; 00022 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 00023 // <http://www.gnu.org/licenses/>. 00024 00025 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 00026 00027 // Permission to use, copy, modify, sell, and distribute this software 00028 // is hereby granted without fee, provided that the above copyright 00029 // notice appears in all copies, and that both that copyright notice 00030 // and this permission notice appear in supporting documentation. None 00031 // of the above authors, nor IBM Haifa Research Laboratories, make any 00032 // representation about the suitability of this software for any 00033 // purpose. It is provided "as is" without express or implied 00034 // warranty. 00035 00036 /** 00037 * @file splay_tree_/find_fn_imps.hpp 00038 * Contains an implementation class for splay_tree_. 00039 */ 00040 00041 PB_DS_CLASS_T_DEC 00042 inline typename PB_DS_CLASS_C_DEC::point_iterator 00043 PB_DS_CLASS_C_DEC:: 00044 find(key_const_reference r_key) 00045 { 00046 node_pointer p_found = find_imp(r_key); 00047 if (p_found != base_type::m_p_head) 00048 splay(p_found); 00049 return point_iterator(p_found); 00050 } 00051 00052 PB_DS_CLASS_T_DEC 00053 inline typename PB_DS_CLASS_C_DEC::point_const_iterator 00054 PB_DS_CLASS_C_DEC:: 00055 find(key_const_reference r_key) const 00056 { 00057 const node_pointer p_found = find_imp(r_key); 00058 if (p_found != base_type::m_p_head) 00059 const_cast<PB_DS_CLASS_C_DEC* >(this)->splay(p_found); 00060 return point_iterator(p_found); 00061 } 00062 00063 PB_DS_CLASS_T_DEC 00064 inline typename PB_DS_CLASS_C_DEC::node_pointer 00065 PB_DS_CLASS_C_DEC:: 00066 find_imp(key_const_reference r_key) 00067 { 00068 _GLIBCXX_DEBUG_ONLY(base_type::structure_only_assert_valid(__FILE__, 00069 __LINE__);) 00070 node_pointer p_nd = base_type::m_p_head->m_p_parent; 00071 while (p_nd != 0) 00072 if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key)) 00073 { 00074 if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value))) 00075 return p_nd; 00076 p_nd = p_nd->m_p_left; 00077 } 00078 else 00079 p_nd = p_nd->m_p_right; 00080 return base_type::m_p_head; 00081 } 00082 00083 PB_DS_CLASS_T_DEC 00084 inline const typename PB_DS_CLASS_C_DEC::node_pointer 00085 PB_DS_CLASS_C_DEC:: 00086 find_imp(key_const_reference r_key) const 00087 { 00088 PB_DS_ASSERT_VALID((*this)) 00089 node_pointer p_nd = base_type::m_p_head->m_p_parent; 00090 while (p_nd != 0) 00091 if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key)) 00092 { 00093 if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value))) 00094 return p_nd; 00095 p_nd = p_nd->m_p_left; 00096 } 00097 else 00098 p_nd = p_nd->m_p_right; 00099 return base_type::m_p_head; 00100 }