--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009, 2010, 2011 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 splay_tree_/splay_tree_.hpp
+ * Contains an implementation class for splay trees.
+ */
+/*
+ * This implementation uses an idea from the SGI STL (using a @a header node
+ * which is needed for efficient iteration). Following is the SGI STL
+ * copyright.
+ *
+ * Copyright (c) 1996,1997
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation. Silicon Graphics makes no
+ * representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ *
+ * Copyright (c) 1994
+ * Hewlett-Packard Company
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation. Hewlett-Packard Company makes no
+ * representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ *
+ */
+
+#include <utility>
+#include <vector>
+#include <assert.h>
+#include <debug/debug.h>
+
+namespace __gnu_pbds
+{
+ namespace detail
+ {
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+# define PB_DS_S_TREE_NAME splay_tree_map
+# define PB_DS_S_TREE_BASE_NAME bin_search_tree_map
+#endif
+
+#ifdef PB_DS_DATA_FALSE_INDICATOR
+# define PB_DS_S_TREE_NAME splay_tree_set
+# define PB_DS_S_TREE_BASE_NAME bin_search_tree_set
+#endif
+
+#define PB_DS_CLASS_T_DEC \
+ template<typename Key, typename Mapped, typename Cmp_Fn, \
+ typename Node_And_It_Traits, typename _Alloc>
+
+#define PB_DS_CLASS_C_DEC \
+ PB_DS_S_TREE_NAME<Key, Mapped, Cmp_Fn, Node_And_It_Traits, _Alloc>
+
+#define PB_DS_S_TREE_BASE \
+ PB_DS_S_TREE_BASE_NAME<Key, Mapped, Cmp_Fn, Node_And_It_Traits, _Alloc>
+
+
+ /**
+ * @brief Splay tree.
+ * @ingroup branch-detail
+ */
+ template<typename Key, typename Mapped, typename Cmp_Fn,
+ typename Node_And_It_Traits, typename _Alloc>
+ class PB_DS_S_TREE_NAME : public PB_DS_S_TREE_BASE
+ {
+ private:
+ typedef PB_DS_S_TREE_BASE base_type;
+#ifdef _GLIBCXX_DEBUG
+ typedef base_type debug_base;
+#endif
+ typedef typename base_type::node_pointer node_pointer;
+
+ public:
+ typedef splay_tree_tag container_category;
+ typedef _Alloc allocator_type;
+ typedef typename _Alloc::size_type size_type;
+ typedef typename _Alloc::difference_type difference_type;
+ typedef Cmp_Fn cmp_fn;
+ typedef typename base_type::key_type key_type;
+ typedef typename base_type::key_pointer key_pointer;
+ typedef typename base_type::key_const_pointer key_const_pointer;
+ typedef typename base_type::key_reference key_reference;
+ typedef typename base_type::key_const_reference key_const_reference;
+ typedef typename base_type::mapped_type mapped_type;
+ typedef typename base_type::mapped_pointer mapped_pointer;
+ typedef typename base_type::mapped_const_pointer mapped_const_pointer;
+ typedef typename base_type::mapped_reference mapped_reference;
+ typedef typename base_type::mapped_const_reference mapped_const_reference;
+ typedef typename base_type::value_type value_type;
+ typedef typename base_type::pointer pointer;
+ typedef typename base_type::const_pointer const_pointer;
+ typedef typename base_type::reference reference;
+ typedef typename base_type::const_reference const_reference;
+ typedef typename base_type::point_iterator point_iterator;
+ typedef typename base_type::const_iterator point_const_iterator;
+ typedef typename base_type::iterator iterator;
+ typedef typename base_type::const_iterator const_iterator;
+ typedef typename base_type::reverse_iterator reverse_iterator;
+ typedef typename base_type::const_reverse_iterator const_reverse_iterator;
+ typedef typename base_type::node_update node_update;
+
+ PB_DS_S_TREE_NAME();
+
+ PB_DS_S_TREE_NAME(const Cmp_Fn&);
+
+ PB_DS_S_TREE_NAME(const Cmp_Fn&, const node_update&);
+
+ PB_DS_S_TREE_NAME(const PB_DS_CLASS_C_DEC&);
+
+ void
+ swap(PB_DS_CLASS_C_DEC&);
+
+ template<typename It>
+ void
+ copy_from_range(It, It);
+
+ void
+ initialize();
+
+ inline std::pair<point_iterator, bool>
+ insert(const_reference r_value);
+
+ inline mapped_reference
+ operator[](key_const_reference r_key)
+ {
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+ _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
+ std::pair<point_iterator, bool> ins_pair =
+ insert_leaf_imp(value_type(r_key, mapped_type()));
+
+ ins_pair.first.m_p_nd->m_special = false;
+ _GLIBCXX_DEBUG_ONLY(base_type::assert_valid(__FILE__, __LINE__));
+ splay(ins_pair.first.m_p_nd);
+ _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
+ return ins_pair.first.m_p_nd->m_value.second;
+#else
+ insert(r_key);
+ return base_type::s_null_type;
+#endif
+ }
+
+ inline point_iterator
+ find(key_const_reference);
+
+ inline point_const_iterator
+ find(key_const_reference) const;
+
+ inline bool
+ erase(key_const_reference);
+
+ inline iterator
+ erase(iterator it);
+
+ inline reverse_iterator
+ erase(reverse_iterator);
+
+ template<typename Pred>
+ inline size_type
+ erase_if(Pred);
+
+ void
+ join(PB_DS_CLASS_C_DEC&);
+
+ void
+ split(key_const_reference, PB_DS_CLASS_C_DEC&);
+
+ private:
+ inline std::pair<point_iterator, bool>
+ insert_leaf_imp(const_reference);
+
+ inline node_pointer
+ find_imp(key_const_reference);
+
+ inline const node_pointer
+ find_imp(key_const_reference) const;
+
+#ifdef _GLIBCXX_DEBUG
+ void
+ assert_valid(const char* file, int line) const;
+
+ void
+ assert_special_imp(const node_pointer, const char* file, int line) const;
+#endif
+
+ void
+ splay(node_pointer);
+
+ inline void
+ splay_zig_zag_left(node_pointer, node_pointer, node_pointer);
+
+ inline void
+ splay_zig_zag_right(node_pointer, node_pointer, node_pointer);
+
+ inline void
+ splay_zig_zig_left(node_pointer, node_pointer, node_pointer);
+
+ inline void
+ splay_zig_zig_right(node_pointer, node_pointer, node_pointer);
+
+ inline void
+ splay_zz_start(node_pointer, node_pointer, node_pointer);
+
+ inline void
+ splay_zz_end(node_pointer, node_pointer, node_pointer);
+
+ inline node_pointer
+ leftmost(node_pointer);
+
+ void
+ erase_node(node_pointer);
+ };
+
+#define PB_DS_ASSERT_BASE_NODE_CONSISTENT(_Node) \
+ _GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(_Node, \
+ __FILE__, __LINE__);)
+
+#include <ext/pb_ds/detail/splay_tree_/constructors_destructor_fn_imps.hpp>
+#include <ext/pb_ds/detail/splay_tree_/insert_fn_imps.hpp>
+#include <ext/pb_ds/detail/splay_tree_/splay_fn_imps.hpp>
+#include <ext/pb_ds/detail/splay_tree_/erase_fn_imps.hpp>
+#include <ext/pb_ds/detail/splay_tree_/find_fn_imps.hpp>
+#include <ext/pb_ds/detail/splay_tree_/debug_fn_imps.hpp>
+#include <ext/pb_ds/detail/splay_tree_/split_join_fn_imps.hpp>
+
+#undef PB_DS_ASSERT_BASE_NODE_CONSISTENT
+#undef PB_DS_CLASS_T_DEC
+#undef PB_DS_CLASS_C_DEC
+#undef PB_DS_S_TREE_NAME
+#undef PB_DS_S_TREE_BASE_NAME
+#undef PB_DS_S_TREE_BASE
+ } // namespace detail
+} // namespace __gnu_pbds
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