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h 7:128
+ l4(q)F
uk_I|+ ? // RB tree implementation -*- C++ -*-
// Copyright (C) 2001-2021 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
// .
/*
*
* 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.
*
*
*/
/** @file bits/stl_tree.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{map,set}
*/
#ifndef _STL_TREE_H
#define _STL_TREE_H 1
#pragma GCC system_header
#include
#include
#include
#include
#include
#if __cplusplus >= 201103L
# include
#endif
#if __cplusplus > 201402L
# include
#endif
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
#if __cplusplus > 201103L
# define __cpp_lib_generic_associative_lookup 201304
#endif
// Red-black tree class, designed for use in implementing STL
// associative containers (set, multiset, map, and multimap). The
// insertion and deletion algorithms are based on those in Cormen,
// Leiserson, and Rivest, Introduction to Algorithms (MIT Press,
// 1990), except that
//
// (1) the header cell is maintained with links not only to the root
// but also to the leftmost node of the tree, to enable constant
// time begin(), and to the rightmost node of the tree, to enable
// linear time performance when used with the generic set algorithms
// (set_union, etc.)
//
// (2) when a node being deleted has two children its successor node
// is relinked into its place, rather than copied, so that the only
// iterators invalidated are those referring to the deleted node.
enum _Rb_tree_color { _S_red = false, _S_black = true };
struct _Rb_tree_node_base
{
typedef _Rb_tree_node_base* _Base_ptr;
typedef const _Rb_tree_node_base* _Const_Base_ptr;
_Rb_tree_color _M_color;
_Base_ptr _M_parent;
_Base_ptr _M_left;
_Base_ptr _M_right;
static _Bas