// -*- C++ -*-
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// -*- C++ -*-
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// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
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// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
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//
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// Foundation; either version 3, or (at your option) any later
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// version.
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// version.
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// This library is distributed in the hope that it will be useful, but
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// <http://www.gnu.org/licenses/>.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice
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// notice appears in all copies, and that both that copyright notice
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// and this permission notice appear in supporting documentation. None
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// and this permission notice appear in supporting documentation. None
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied
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// purpose. It is provided "as is" without express or implied
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// warranty.
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// warranty.
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/**
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/**
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* @file erase_fn_imps.hpp
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* @file erase_fn_imps.hpp
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* Contains an implementation class for bin_search_tree_.
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* Contains an implementation class for bin_search_tree_.
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*/
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*/
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline bool
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inline bool
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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erase(const_key_reference r_key)
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erase(const_key_reference r_key)
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{
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{
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node_pointer p_nd = find_imp(r_key);
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node_pointer p_nd = find_imp(r_key);
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if (p_nd == NULL || p_nd->m_type == pat_trie_internal_node_type)
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if (p_nd == NULL || p_nd->m_type == pat_trie_internal_node_type)
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{
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{
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_GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key));
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_GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key));
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return false;
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return false;
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}
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}
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_type == pat_trie_leaf_node_type);
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_type == pat_trie_leaf_node_type);
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if (!synth_e_access_traits::equal_keys(PB_DS_V2F(reinterpret_cast<leaf_pointer>(p_nd)->value()), r_key))
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if (!synth_e_access_traits::equal_keys(PB_DS_V2F(reinterpret_cast<leaf_pointer>(p_nd)->value()), r_key))
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{
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{
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_GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key));
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_GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key));
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return false;
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return false;
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}
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}
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_GLIBCXX_DEBUG_ONLY(debug_base::check_key_exists(r_key));
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_GLIBCXX_DEBUG_ONLY(debug_base::check_key_exists(r_key));
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erase_leaf(static_cast<leaf_pointer>(p_nd));
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erase_leaf(static_cast<leaf_pointer>(p_nd));
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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return true;
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return true;
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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void
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void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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erase_fixup(internal_node_pointer p_nd)
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erase_fixup(internal_node_pointer p_nd)
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{
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{
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_GLIBCXX_DEBUG_ASSERT(std::distance(p_nd->begin(), p_nd->end()) >= 1);
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_GLIBCXX_DEBUG_ASSERT(std::distance(p_nd->begin(), p_nd->end()) >= 1);
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if (std::distance(p_nd->begin(), p_nd->end()) == 1)
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if (std::distance(p_nd->begin(), p_nd->end()) == 1)
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{
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{
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node_pointer p_parent = p_nd->m_p_parent;
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node_pointer p_parent = p_nd->m_p_parent;
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if (p_parent == m_p_head)
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if (p_parent == m_p_head)
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m_p_head->m_p_parent =* p_nd->begin();
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m_p_head->m_p_parent =* p_nd->begin();
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else
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else
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{
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{
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_GLIBCXX_DEBUG_ASSERT(p_parent->m_type == pat_trie_internal_node_type);
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_GLIBCXX_DEBUG_ASSERT(p_parent->m_type == pat_trie_internal_node_type);
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node_pointer p_new_child =* p_nd->begin();
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node_pointer p_new_child =* p_nd->begin();
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static_cast<internal_node_pointer>(p_parent)->replace_child(
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static_cast<internal_node_pointer>(p_parent)->replace_child(
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p_new_child,
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p_new_child,
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pref_begin(p_new_child),
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pref_begin(p_new_child),
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pref_end(p_new_child),
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pref_end(p_new_child),
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this);
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this);
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}
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}
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(*p_nd->begin())->m_p_parent = p_nd->m_p_parent;
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(*p_nd->begin())->m_p_parent = p_nd->m_p_parent;
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p_nd->~internal_node();
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p_nd->~internal_node();
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s_internal_node_allocator.deallocate(p_nd, 1);
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s_internal_node_allocator.deallocate(p_nd, 1);
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if (p_parent == m_p_head)
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if (p_parent == m_p_head)
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return;
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return;
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_GLIBCXX_DEBUG_ASSERT(p_parent->m_type == pat_trie_internal_node_type);
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_GLIBCXX_DEBUG_ASSERT(p_parent->m_type == pat_trie_internal_node_type);
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p_nd = static_cast<internal_node_pointer>(p_parent);
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p_nd = static_cast<internal_node_pointer>(p_parent);
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}
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}
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while (true)
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while (true)
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{
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{
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_GLIBCXX_DEBUG_ASSERT(std::distance(p_nd->begin(), p_nd->end()) > 1);
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_GLIBCXX_DEBUG_ASSERT(std::distance(p_nd->begin(), p_nd->end()) > 1);
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p_nd->update_prefixes(this);
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p_nd->update_prefixes(this);
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apply_update(p_nd, (node_update* )this);
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apply_update(p_nd, (node_update* )this);
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_GLIBCXX_DEBUG_ONLY(p_nd->assert_valid(this);)
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_GLIBCXX_DEBUG_ONLY(p_nd->assert_valid(this);)
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if (p_nd->m_p_parent->m_type == pat_trie_head_node_type)
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if (p_nd->m_p_parent->m_type == pat_trie_head_node_type)
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return;
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return;
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_p_parent->m_type ==
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_p_parent->m_type ==
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pat_trie_internal_node_type);
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pat_trie_internal_node_type);
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p_nd = static_cast<internal_node_pointer>(p_nd->m_p_parent);
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p_nd = static_cast<internal_node_pointer>(p_nd->m_p_parent);
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}
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}
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline void
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inline void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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actual_erase_leaf(leaf_pointer p_l)
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actual_erase_leaf(leaf_pointer p_l)
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{
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{
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_GLIBCXX_DEBUG_ASSERT(m_size > 0);
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_GLIBCXX_DEBUG_ASSERT(m_size > 0);
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--m_size;
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--m_size;
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_GLIBCXX_DEBUG_ONLY(erase_existing(PB_DS_V2F(p_l->value())));
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_GLIBCXX_DEBUG_ONLY(erase_existing(PB_DS_V2F(p_l->value())));
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p_l->~leaf();
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p_l->~leaf();
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s_leaf_allocator.deallocate(p_l, 1);
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s_leaf_allocator.deallocate(p_l, 1);
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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void
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void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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clear()
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clear()
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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if (empty())
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if (empty())
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return;
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return;
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clear_imp(m_p_head->m_p_parent);
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clear_imp(m_p_head->m_p_parent);
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m_size = 0;
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m_size = 0;
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initialize();
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initialize();
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_GLIBCXX_DEBUG_ONLY(debug_base::clear();)
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_GLIBCXX_DEBUG_ONLY(debug_base::clear();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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void
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void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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clear_imp(node_pointer p_nd)
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clear_imp(node_pointer p_nd)
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{
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{
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if (p_nd->m_type == pat_trie_internal_node_type)
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if (p_nd->m_type == pat_trie_internal_node_type)
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{
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{
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_type == pat_trie_internal_node_type);
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_type == pat_trie_internal_node_type);
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for (typename internal_node::iterator it =
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for (typename internal_node::iterator it =
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static_cast<internal_node_pointer>(p_nd)->begin();
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static_cast<internal_node_pointer>(p_nd)->begin();
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it != static_cast<internal_node_pointer>(p_nd)->end();
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it != static_cast<internal_node_pointer>(p_nd)->end();
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++it)
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++it)
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{
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{
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node_pointer p_child =* it;
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node_pointer p_child =* it;
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clear_imp(p_child);
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clear_imp(p_child);
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}
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}
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s_internal_node_allocator.deallocate(static_cast<internal_node_pointer>(p_nd), 1);
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s_internal_node_allocator.deallocate(static_cast<internal_node_pointer>(p_nd), 1);
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return;
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return;
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}
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}
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_type == pat_trie_leaf_node_type);
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_GLIBCXX_DEBUG_ASSERT(p_nd->m_type == pat_trie_leaf_node_type);
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static_cast<leaf_pointer>(p_nd)->~leaf();
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static_cast<leaf_pointer>(p_nd)->~leaf();
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s_leaf_allocator.deallocate(static_cast<leaf_pointer>(p_nd), 1);
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s_leaf_allocator.deallocate(static_cast<leaf_pointer>(p_nd), 1);
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline typename PB_DS_CLASS_C_DEC::const_iterator
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inline typename PB_DS_CLASS_C_DEC::const_iterator
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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erase(const_iterator it)
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erase(const_iterator it)
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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if (it == end())
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if (it == end())
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return it;
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return it;
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const_iterator ret_it = it;
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const_iterator ret_it = it;
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++ret_it;
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++ret_it;
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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return ret_it;
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return ret_it;
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}
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}
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#ifdef PB_DS_DATA_TRUE_INDICATOR
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#ifdef PB_DS_DATA_TRUE_INDICATOR
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline typename PB_DS_CLASS_C_DEC::iterator
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inline typename PB_DS_CLASS_C_DEC::iterator
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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erase(iterator it)
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erase(iterator it)
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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if (it == end())
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if (it == end())
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return it;
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return it;
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iterator ret_it = it;
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iterator ret_it = it;
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++ret_it;
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++ret_it;
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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return ret_it;
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return ret_it;
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}
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}
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#endif // #ifdef PB_DS_DATA_TRUE_INDICATOR
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#endif // #ifdef PB_DS_DATA_TRUE_INDICATOR
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline typename PB_DS_CLASS_C_DEC::const_reverse_iterator
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inline typename PB_DS_CLASS_C_DEC::const_reverse_iterator
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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erase(const_reverse_iterator it)
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erase(const_reverse_iterator it)
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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if (it.m_p_nd == m_p_head)
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if (it.m_p_nd == m_p_head)
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return it;
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return it;
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const_reverse_iterator ret_it = it;
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const_reverse_iterator ret_it = it;
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++ret_it;
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++ret_it;
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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return ret_it;
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return ret_it;
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}
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}
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#ifdef PB_DS_DATA_TRUE_INDICATOR
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#ifdef PB_DS_DATA_TRUE_INDICATOR
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PB_DS_CLASS_T_DEC
|
PB_DS_CLASS_T_DEC
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inline typename PB_DS_CLASS_C_DEC::reverse_iterator
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inline typename PB_DS_CLASS_C_DEC::reverse_iterator
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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erase(reverse_iterator it)
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erase(reverse_iterator it)
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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|
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if (it.m_p_nd == m_p_head)
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if (it.m_p_nd == m_p_head)
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return it;
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return it;
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reverse_iterator ret_it = it;
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reverse_iterator ret_it = it;
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++ret_it;
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++ret_it;
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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_GLIBCXX_DEBUG_ASSERT(it.m_p_nd->m_type == pat_trie_leaf_node_type);
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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erase_leaf(static_cast<leaf_pointer>(it.m_p_nd));
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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_GLIBCXX_DEBUG_ONLY(assert_valid());
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return ret_it;
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return ret_it;
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}
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}
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#endif // #ifdef PB_DS_DATA_TRUE_INDICATOR
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#endif // #ifdef PB_DS_DATA_TRUE_INDICATOR
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|
|
PB_DS_CLASS_T_DEC
|
PB_DS_CLASS_T_DEC
|
template<typename Pred>
|
template<typename Pred>
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inline typename PB_DS_CLASS_C_DEC::size_type
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inline typename PB_DS_CLASS_C_DEC::size_type
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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erase_if(Pred pred)
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erase_if(Pred pred)
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{
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{
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size_type num_ersd = 0;
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size_type num_ersd = 0;
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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|
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iterator it = begin();
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iterator it = begin();
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while (it != end())
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while (it != end())
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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if (pred(*it))
|
if (pred(*it))
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{
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{
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++num_ersd;
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++num_ersd;
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it = erase(it);
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it = erase(it);
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}
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}
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else
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else
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++it;
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++it;
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}
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}
|
|
|
_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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return num_ersd;
|
return num_ersd;
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}
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}
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|
|
PB_DS_CLASS_T_DEC
|
PB_DS_CLASS_T_DEC
|
void
|
void
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PB_DS_CLASS_C_DEC::
|
PB_DS_CLASS_C_DEC::
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erase_leaf(leaf_pointer p_l)
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erase_leaf(leaf_pointer p_l)
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{
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{
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update_min_max_for_erased_leaf(p_l);
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update_min_max_for_erased_leaf(p_l);
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if (p_l->m_p_parent->m_type == pat_trie_head_node_type)
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if (p_l->m_p_parent->m_type == pat_trie_head_node_type)
|
{
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{
|
_GLIBCXX_DEBUG_ASSERT(size() == 1);
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_GLIBCXX_DEBUG_ASSERT(size() == 1);
|
clear();
|
clear();
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return;
|
return;
|
}
|
}
|
|
|
_GLIBCXX_DEBUG_ASSERT(size() > 1);
|
_GLIBCXX_DEBUG_ASSERT(size() > 1);
|
_GLIBCXX_DEBUG_ASSERT(p_l->m_p_parent->m_type ==
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_GLIBCXX_DEBUG_ASSERT(p_l->m_p_parent->m_type ==
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pat_trie_internal_node_type);
|
pat_trie_internal_node_type);
|
|
|
internal_node_pointer p_parent =
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internal_node_pointer p_parent =
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static_cast<internal_node_pointer>(p_l->m_p_parent);
|
static_cast<internal_node_pointer>(p_l->m_p_parent);
|
|
|
p_parent->remove_child(p_l);
|
p_parent->remove_child(p_l);
|
erase_fixup(p_parent);
|
erase_fixup(p_parent);
|
actual_erase_leaf(p_l);
|
actual_erase_leaf(p_l);
|
}
|
}
|
|
|
PB_DS_CLASS_T_DEC
|
PB_DS_CLASS_T_DEC
|
void
|
void
|
PB_DS_CLASS_C_DEC::
|
PB_DS_CLASS_C_DEC::
|
update_min_max_for_erased_leaf(leaf_pointer p_l)
|
update_min_max_for_erased_leaf(leaf_pointer p_l)
|
{
|
{
|
if (m_size == 1)
|
if (m_size == 1)
|
{
|
{
|
m_p_head->m_p_min = m_p_head;
|
m_p_head->m_p_min = m_p_head;
|
m_p_head->m_p_max = m_p_head;
|
m_p_head->m_p_max = m_p_head;
|
return;
|
return;
|
}
|
}
|
|
|
if (p_l == static_cast<const_leaf_pointer>(m_p_head->m_p_min))
|
if (p_l == static_cast<const_leaf_pointer>(m_p_head->m_p_min))
|
{
|
{
|
iterator it(p_l);
|
iterator it(p_l);
|
++it;
|
++it;
|
m_p_head->m_p_min = it.m_p_nd;
|
m_p_head->m_p_min = it.m_p_nd;
|
return;
|
return;
|
}
|
}
|
|
|
if (p_l == static_cast<const_leaf_pointer>(m_p_head->m_p_max))
|
if (p_l == static_cast<const_leaf_pointer>(m_p_head->m_p_max))
|
{
|
{
|
iterator it(p_l);
|
iterator it(p_l);
|
--it;
|
--it;
|
m_p_head->m_p_max = it.m_p_nd;
|
m_p_head->m_p_max = it.m_p_nd;
|
}
|
}
|
}
|
}
|
|
|