diff options
Diffstat (limited to 'libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/split_join_fn_imps.hpp')
| -rw-r--r-- | libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/split_join_fn_imps.hpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/split_join_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/split_join_fn_imps.hpp new file mode 100644 index 00000000000..103f636d6a5 --- /dev/null +++ b/libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/split_join_fn_imps.hpp @@ -0,0 +1,181 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006 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 2, 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. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. + +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +// 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 split_join_fn_imps.hpp + * Contains an implementation class for bin_search_tree_. + */ + +PB_DS_CLASS_T_DEC +bool +PB_DS_CLASS_C_DEC:: +join_prep(PB_DS_CLASS_C_DEC& other) +{ + PB_DS_DBG_ONLY(assert_valid();) + PB_DS_DBG_ONLY(other.assert_valid();) + + if (other.m_size == 0) + return (false); + + if (m_size == 0) + { + value_swap(other); + + return (false); + } + + const bool greater = Cmp_Fn::operator()( + PB_DS_V2F(m_p_head->m_p_right->m_value), + PB_DS_V2F(other.m_p_head->m_p_left->m_value)); + + const bool lesser = Cmp_Fn::operator()( + PB_DS_V2F(other.m_p_head->m_p_right->m_value), + PB_DS_V2F(m_p_head->m_p_left->m_value)); + + if (!greater&& !lesser) + throw join_error(); + + if (lesser) + value_swap(other); + + m_size += other.m_size; + + PB_DS_DBG_ONLY(map_debug_base::join(other);) + + return (true); +} + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +join_finish(PB_DS_CLASS_C_DEC& other) +{ + initialize_min_max(); + + other.initialize(); +} + +PB_DS_CLASS_T_DEC +bool +PB_DS_CLASS_C_DEC:: +split_prep(const_key_reference r_key, PB_DS_CLASS_C_DEC& other) +{ + PB_DS_DBG_ONLY(assert_valid();) + PB_DS_DBG_ONLY(other.assert_valid();) + + other.clear(); + + if (m_size == 0) + { + PB_DS_DBG_ONLY(assert_valid();) + PB_DS_DBG_ONLY(other.assert_valid();) + + return (false); + } + + if (Cmp_Fn::operator()(r_key, PB_DS_V2F(m_p_head->m_p_left->m_value))) + { + value_swap(other); + + PB_DS_DBG_ONLY(assert_valid();) + PB_DS_DBG_ONLY(other.assert_valid();) + + return (false); + } + + if (!Cmp_Fn::operator()( + r_key, + PB_DS_V2F(m_p_head->m_p_right->m_value))) + { + PB_DS_DBG_ONLY(assert_valid();) + PB_DS_DBG_ONLY(other.assert_valid();) + + return (false); + } + + if (m_size == 1) + { + value_swap(other); + + PB_DS_DBG_ONLY(assert_valid();) + PB_DS_DBG_ONLY(other.assert_valid();) + + return (false); + } + + PB_DS_DBG_ONLY(map_debug_base::split( + r_key,(Cmp_Fn& )(*this), + other);) + + return (true); +} + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +split_finish(PB_DS_CLASS_C_DEC& other) +{ + other.initialize_min_max(); + + other.m_size = + std::distance(other.begin(), other.end()); + + m_size -= other.m_size; + + initialize_min_max(); + + PB_DS_DBG_ONLY(assert_valid();) + PB_DS_DBG_ONLY(other.assert_valid();) + } + +PB_DS_CLASS_T_DEC +typename PB_DS_CLASS_C_DEC::size_type +PB_DS_CLASS_C_DEC:: +recursive_count(node_pointer p_nd) const +{ + if (p_nd == NULL) + return (0); + + return (1 + + recursive_count(p_nd->m_p_left) + + recursive_count(p_nd->m_p_right)); +} + |