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Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [include/] [ext/] [pb_ds/] [detail/] [splay_tree_/] [erase_fn_imps.hpp] - Rev 516
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// -*- 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 erase_fn_imps.hpp * Contains an implementation class for splay_tree_. */ PB_DS_CLASS_T_DEC inline bool PB_DS_CLASS_C_DEC:: erase(const_key_reference r_key) { point_iterator it = find(r_key); if (it == base_type::end()) return false; erase(it); return true; } PB_DS_CLASS_T_DEC inline typename PB_DS_CLASS_C_DEC::iterator PB_DS_CLASS_C_DEC:: erase(iterator it) { _GLIBCXX_DEBUG_ONLY(assert_valid()); if (it == base_type::end()) return it; iterator ret_it = it; ++ret_it; erase_node(it.m_p_nd); _GLIBCXX_DEBUG_ONLY(assert_valid()); return ret_it; } PB_DS_CLASS_T_DEC inline typename PB_DS_CLASS_C_DEC::reverse_iterator PB_DS_CLASS_C_DEC:: erase(reverse_iterator it) { _GLIBCXX_DEBUG_ONLY(assert_valid()); if (it.m_p_nd == base_type::m_p_head) return (it); reverse_iterator ret_it = it; ++ret_it; erase_node(it.m_p_nd); _GLIBCXX_DEBUG_ONLY(assert_valid()); return ret_it; } PB_DS_CLASS_T_DEC template<typename Pred> inline typename PB_DS_CLASS_C_DEC::size_type PB_DS_CLASS_C_DEC:: erase_if(Pred pred) { _GLIBCXX_DEBUG_ONLY(assert_valid();) size_type num_ersd = 0; iterator it = base_type::begin(); while (it != base_type::end()) { if (pred(*it)) { ++num_ersd; it = erase(it); } else ++it; } _GLIBCXX_DEBUG_ONLY(assert_valid();) return num_ersd; } PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: erase_node(node_pointer p_nd) { _GLIBCXX_DEBUG_ASSERT(p_nd != NULL); splay(p_nd); _GLIBCXX_DEBUG_ONLY(assert_valid();) _GLIBCXX_DEBUG_ASSERT(p_nd == this->m_p_head->m_p_parent); node_pointer p_l = p_nd->m_p_left; node_pointer p_r = p_nd->m_p_right; base_type::update_min_max_for_erased_node(p_nd); base_type::actual_erase_node(p_nd); if (p_r == NULL) { base_type::m_p_head->m_p_parent = p_l; if (p_l != NULL) p_l->m_p_parent = base_type::m_p_head; _GLIBCXX_DEBUG_ONLY(assert_valid();) return; } node_pointer p_target_r = leftmost(p_r); _GLIBCXX_DEBUG_ASSERT(p_target_r != NULL); p_r->m_p_parent = base_type::m_p_head; base_type::m_p_head->m_p_parent = p_r; splay(p_target_r); _GLIBCXX_DEBUG_ONLY(p_target_r->m_p_left = NULL); _GLIBCXX_DEBUG_ASSERT(p_target_r->m_p_parent == this->m_p_head); _GLIBCXX_DEBUG_ASSERT(this->m_p_head->m_p_parent == p_target_r); p_target_r->m_p_left = p_l; if (p_l != NULL) p_l->m_p_parent = p_target_r; _GLIBCXX_DEBUG_ONLY(assert_valid();) apply_update(p_target_r, (node_update* )this); } PB_DS_CLASS_T_DEC inline typename PB_DS_CLASS_C_DEC::node_pointer PB_DS_CLASS_C_DEC:: leftmost(node_pointer p_nd) { _GLIBCXX_DEBUG_ASSERT(p_nd != NULL); while (p_nd->m_p_left != NULL) p_nd = p_nd->m_p_left; return p_nd; }