| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | namespace Nayjest\Tree; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | use Nayjest\Collection\Extended\Registry; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | use Nayjest\Collection\Extended\RegistryInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | use Nayjest\Tree\Exception\NodeNotFoundException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | use Nayjest\Tree\Utils\TreeBuilder; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * Class for working with tree. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * ==== [ RU ] ==== | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  * Класс для работы с деревом. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  * Особенности реализации: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  *  (1) Раздельно хранит реестр именованных узлов (1-a) и конфигурацию дерева (1-b) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  *  (2) Замораживает связи между узлами, описанными в конфигурации | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  * Фичи: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  *   1-a.1 Доступ к узлам дерева по имени [ $tree->nodes()->get('name') ] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  *         Решает задачи: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  *           * Доступ к функциональным(именованным) узлам дерева | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  *         Альтернативы: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  *           * Pекурсивный поиск по свойству | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  *             + есть из коробки | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  *             - плохая производительность | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |  *           * Хранение ссылок на узлы (возможно заслуживает внимания) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |  *             - нужно реализовать обновление ссылок при замене узлов | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  *         Cons/Pros | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |  *         + Быстрее рекурсивного поиска | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |  *         + Поиск ограничивается реестром, что исключает конфликты имен с элементами нижележащих деревьев | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |  *         - сложнее реализация (рекурсивный поиск есть из коробки) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |  *   1-a.2 Можно определить функциональную принадлежность узла конкретному дереву | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |  *   1-b.1 Позволяет заменить функциональный узел с сохранением функционвльных потомков | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  *   2. Выборочное замораживание структуры дерева | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  *      Решает проблему: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  *       Поддержка целосности структуры, однозначность операций т. к. открыто 2 API для модификации дерева | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |  *       ситуации: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  *         * узел удален из дерева через node api, но остался в $hierarchy: после $tree->update() он опять туда попадет | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  *         * через api узлов можно сломать структуру, ожидаемую от дерева, т. е. нельзя завязаться на уонкретное дерево | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  *      Альтернативы: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |  *          * Сокрытие дочерних элементов | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |  *            - нельзя вообще никак модифицировать/читать структуру | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |  *          * Readonly root.children | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  *            - не решает проблему | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  *          * Readonly children of all nodes in registry | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |  *            - не проще в реализации, но налагает излишние ограничения | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |  *      Cons/Pros | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |  *        + позволяет свободно модифицировать узлы, не считая связей, определенных деревом | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |  *        + Через API узлов нельзя сломать структуру дерева | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | class Tree | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |     const NODE_EXISTS = 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     const NODE_ADDED = 2; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |     const PARENT_NODE_NOT_FOUND = 3; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      * @var array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |     private $hierarchy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |      * @var NodeInterface[]|RegistryInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |     private $nodes; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |      * @var TreeBuilder | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |     private $builder; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |      * @var bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |     private $updateRequired = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |      * @var ParentNodeInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |     private $root; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |      * Tree constructor. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |      * @param ParentNodeInterface $root | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |      * @param array               $hierarchy | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |      * @param array|Registry      $nodes | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |     public function __construct( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |         ParentNodeInterface $root, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |         array $hierarchy, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |         $nodes | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |     ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |         $this->hierarchy = $hierarchy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |         $this->nodes = $nodes instanceof Registry ? $nodes : new Registry($nodes); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |         $this->builder = Utils::getDefaultTreeBuilder(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |         $this->root = $root; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |      * @return ParentNodeInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |     public function getRoot() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |         return $this->root; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |      * @return NodeInterface[] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |     public function getNodes() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |         return $this->nodes->toArray(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |      * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |     public function getHierarchy() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |         return $this->hierarchy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |      * Builds tree based on its nodes registry and hierarchy configuration | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |      * if structure update required. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |     public function build() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |         if ($this->updateRequired) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |             $this->updateRequired = false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |             foreach ($this->nodes as $node) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |                 if ($node->parent()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |                     $node->unlock()->detach(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |             $this->root->addChildren($this->builder->build($this->hierarchy, $this->nodes->toArray())); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |             foreach ($this->nodes as $node) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |                 if ($node->parent() === $this->root || $this->nodes->contains($node->parent())) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |                     $node->lock(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |      * @param string|null $parentName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |      * @param string $nodeName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |      * @param ChildNodeInterface $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |      * @return Tree | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |     public function append($parentName = null, $nodeName, ChildNodeInterface $node) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |         return $this->add($parentName, $nodeName, $node, false); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |      * @param string|null $parentName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |      * @param string $nodeName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |      * @param ChildNodeInterface $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |      * @return Tree | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |     public function prepend($parentName = null, $nodeName, ChildNodeInterface $node) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |         return $this->add($parentName, $nodeName, $node, true); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |      * Replaces named tree node to new one. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |      * @param string             $nodeName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  |      * @param ChildNodeInterface $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |      * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |     public function replace($nodeName, ChildNodeInterface $node) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |         $this->removeNodeFromList($nodeName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |         $this->nodes->set($nodeName, $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |         $this->updateRequired = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |      * Adds multiple nodes to tree. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |      * @param string|null $parentName root node will be used if null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |      * @param array $namedItems array with nodes where keys are node names | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  |      * @param bool $prepend if true, nodes will be prepended, otherwise appended to parent | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  |      * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |     public function addMany($parentName, array $namedItems, $prepend = false) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  |         foreach ($namedItems as $name => $item) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  |             $this->add($parentName, $name, $item, $prepend); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |      * Finds node by its name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |      * @param string $nodeName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |      * @return null|object | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |     public function get($nodeName) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |         return $this->nodes->get($nodeName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |      * Returns true if tree contains node with specified name, returns false otherwise. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |      * @param string $nodeName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |     public function has($nodeName) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |         return $this->nodes->hasKey($nodeName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  |      * Moves node to another parent. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |      * @param string $nodeName target node name | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  |      * @param string|null $newParentName parent node name;  root will be used if null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  |      * @param bool $prepend | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  |      * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  |     public function move($nodeName, $newParentName, $prepend = false) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  |         if (!$this->nodes->hasKey($nodeName)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  |             throw new NodeNotFoundException(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  |         $node = $this->nodes->get($nodeName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  |         $this->remove($nodeName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  |         $this->add($newParentName, $nodeName, $node, $prepend); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  |      * Removes node by its name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  |      * @param string $nodeName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  |      * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  |     public function remove($nodeName) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  |         $children = self::removeTreeNode($this->hierarchy, $nodeName); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  |         // @todo remove all children | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  |         $this->removeNodeFromList($nodeName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  |         $this->updateRequired = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  |      * Adds new tree node. If node exists, replaces it. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  |      * @param string|null        $parentName root if null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  |      * @param string             $nodeName   new node name | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  |      * @param ChildNodeInterface $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  |      * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  |     protected function add($parentName = null, $nodeName, ChildNodeInterface $node, $prepend = false) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 |  |  |         if (!self::addTreeNode($this->hierarchy, $parentName, $nodeName, $prepend)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  |             throw new NodeNotFoundException( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  |                 "Can't add '$nodeName' node to '$parentName': '$parentName' node not found." | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  |             ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  |         $this->removeNodeFromList($nodeName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  |         $this->nodes->set($nodeName, $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  |         $this->updateRequired = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  |      * @todo try array_walk_recursive | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  |      * @param array  $tree | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  |      * @param string $parent node name or null for inserting into root node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  |      * @param $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  |      * @throws \Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  |      * @return bool false if no parent found | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  |     private static function addTreeNode(array &$tree, $parent, $node, $prepend = false) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  |         if ($parent === null) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  |             if (array_key_exists($node, $tree)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  |                 throw new \Exception('Node already exists'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  |             if ($prepend) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  |                 $tree = array_merge([$node => []], $tree); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  |             } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  |                 $tree[$node] = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  |             return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  |         foreach ($tree as $key => &$value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  |             if ($key === $parent) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  |                 return self::addTreeNode($value, null, $node, $prepend); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  |             } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  |                 if (self::addTreeNode($value, $parent, $node, $prepend)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  |                     return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  |         return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  |      * @param array $config | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  |      * @param $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  |      * @return false|array children of deleted node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  |     private static function removeTreeNode(array &$config, $node) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  |         foreach ($config as $key => &$value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  |             if ($key === $node) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 333 |  |  |                 $children = $config[$node]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 334 |  |  |                 unset($config[$node]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 335 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 336 |  |  |                 return $children; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 337 |  |  |             } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 338 |  |  |                 $result = self::removeTreeNode($value, $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 339 |  |  |                 if ($result !== false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 340 |  |  |                     return $result; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  |         return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 347 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 348 |  |  |     protected function removeNodeFromList($nodeName) | 
            
                                                        
            
                                    
            
            
                | 349 |  |  |     { | 
            
                                                        
            
                                    
            
            
                | 350 |  |  |         if ($this->nodes->hasKey($nodeName)) { | 
            
                                                        
            
                                    
            
            
                | 351 |  |  |             $oldNode = $this->nodes->get($nodeName); | 
            
                                                        
            
                                    
            
            
                | 352 |  |  |             if ($oldNode->parent()) { | 
            
                                                        
            
                                    
            
            
                | 353 |  |  |                 $oldNode->unlock()->detach(); | 
            
                                                        
            
                                    
            
            
                | 354 |  |  |             } | 
            
                                                        
            
                                    
            
            
                | 355 |  |  |             $this->nodes->removeByKey($nodeName); | 
            
                                                        
            
                                    
            
            
                | 356 |  |  |             $this->updateRequired = true; | 
            
                                                        
            
                                    
            
            
                | 357 |  |  |         } | 
            
                                                        
            
                                    
            
            
                | 358 |  |  |     } | 
            
                                                        
            
                                    
            
            
                | 359 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 360 |  |  |  | 
            
                        
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.