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#ifndef theplu_yat_utility_detail_node_base |
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#define theplu_yat_utility_detail_node_base |
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|
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// $Id$ |
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|
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/* |
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Copyright (C) 2021 Peter Johansson |
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|
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This file is part of the yat library, http://dev.thep.lu.se/yat |
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|
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The yat library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License as |
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published by the Free Software Foundation; either version 3 of the |
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License, or (at your option) any later version. |
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|
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The yat library is distributed in the hope that it will be useful, |
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but 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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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with yat. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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|
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// This is a private file used by yat/utility/Ranking.h |
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|
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#include <cstddef> |
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|
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namespace theplu { |
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namespace yat { |
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namespace utility { |
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|
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/// \cond IGNORE_DOXYGEN |
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|
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// namespace for internal classes used in class Ranking |
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namespace ranking { |
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|
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class NodeBase |
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{ |
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public: |
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NodeBase(void); |
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virtual ~NodeBase(void); |
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NodeBase* parent_; |
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NodeBase* left_; |
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NodeBase* right_; |
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unsigned int height_; // max distance to leaf (plus 1) |
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// number of total offsprings including myself |
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size_t size_; |
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|
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// return left height minus right height |
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int balance(void) const; |
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|
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// return 0 for root, 1 for its children, etc |
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int generation(void) const; |
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|
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// increase size of node and parent node, recursively. |
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void increment_size(void); |
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// decrease size of node and parent node, recursively. |
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void decrement_size(void); |
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|
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// set size to 1 + size of left + size of right |
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void update_size(void); |
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// set height to max of left height and right height plus 1 |
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void update_height(void); |
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// set height as in update_height. If heigh is updated, call |
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// parent as well. |
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void update_height_recursively(void); |
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|
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// return true if head node |
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bool is_head_node(void) const; |
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// return true if having a parent and its left child is this |
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bool is_left_node(void) const; |
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// return true if having a parent and its right child is this |
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bool is_right_node(void) const; |
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// return true if having no parent |
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bool is_root_node(void) const; |
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// return traverse up in the tree following the left branch |
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// until a node has no left branch and we return that leaf node. |
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NodeBase* left_most(void); |
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const NodeBase* left_most(void) const; |
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// same as left_most but follow right branch |
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NodeBase* right_most(void); |
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const NodeBase* right_most(void) const; |
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bool validate(bool head=false) const; |
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}; |
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|
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size_t height(const NodeBase* node); |
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size_t size(const NodeBase* node); |
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|
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} // end of namespace ranking |
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|
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/// \endcond |
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|
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}}} // of namespace utility, yat, and theplu |
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#endif |