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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/include/ext/pb_ds/detail/ov_tree_map_/split_join_fn_imps.hpp | |
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Diffstat (limited to 'libstdc++-v3/include/ext/pb_ds/detail/ov_tree_map_/split_join_fn_imps.hpp')
-rw-r--r-- | libstdc++-v3/include/ext/pb_ds/detail/ov_tree_map_/split_join_fn_imps.hpp | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/ov_tree_map_/split_join_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/ov_tree_map_/split_join_fn_imps.hpp new file mode 100644 index 000000000..76bb6fafd --- /dev/null +++ b/libstdc++-v3/include/ext/pb_ds/detail/ov_tree_map_/split_join_fn_imps.hpp @@ -0,0 +1,137 @@ +// -*- 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 split_join_fn_imps.hpp + * Contains an implementation class for ov_tree_. + */ + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +split(const_key_reference r_key, PB_DS_CLASS_C_DEC& other) +{ + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + + if (m_size == 0) + { + other.clear(); + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + return; + } + + if (Cmp_Fn::operator()(r_key, PB_DS_V2F(*begin()))) + { + value_swap(other); + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + return; + } + + if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(*(end() - 1)))) + { + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + return; + } + + if (m_size == 1) + { + value_swap(other); + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + return; + } + + _GLIBCXX_DEBUG_ONLY(debug_base::join(other);) + iterator it = upper_bound(r_key); + PB_DS_CLASS_C_DEC new_other(other, other); + new_other.copy_from_ordered_range(it, end()); + PB_DS_CLASS_C_DEC new_this(*this, * this); + new_this.copy_from_ordered_range(begin(), it); + + // No exceptions from this point. + _GLIBCXX_DEBUG_ONLY(debug_base::split(r_key,(Cmp_Fn& )(*this), other);) + other.update(other.node_begin(), (node_update* )(&other)); + update(node_begin(), (node_update* )this); + other.value_swap(new_other); + value_swap(new_this); + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) +} + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +join(PB_DS_CLASS_C_DEC& other) +{ + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + if (other.m_size == 0) + return; + + if (m_size == 0) + { + value_swap(other); + return; + } + + const bool greater = Cmp_Fn::operator()(PB_DS_V2F(*(end() - 1)), + PB_DS_V2F(*other.begin())); + + const bool lesser = Cmp_Fn::operator()(PB_DS_V2F(*(other.end() - 1)), + PB_DS_V2F(*begin())); + + if (!greater && !lesser) + __throw_join_error(); + + PB_DS_CLASS_C_DEC new_this(*this, *this); + + if (greater) + new_this.copy_from_ordered_range(begin(), end(), + other.begin(), other.end()); + else + new_this.copy_from_ordered_range(other.begin(), other.end(), + begin(), end()); + + // No exceptions from this point. + _GLIBCXX_DEBUG_ONLY(debug_base::join(other);) + value_swap(new_this); + other.clear(); + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) +} |