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<?php |
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/* |
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* This file is part of NodalFlow. |
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* (c) Fabrice de Stefanis / https://github.com/fab2s/NodalFlow |
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* This source file is licensed under the MIT license which you will |
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* find in the LICENSE file or at https://opensource.org/licenses/MIT |
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*/ |
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namespace fab2s\NodalFlow\Flows; |
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use fab2s\NodalFlow\Nodes\NodeInterface; |
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use fab2s\NodalFlow\Nodes\TraversableNodeInterface; |
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/** |
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* Abstract Class FlowAncestryAbstract |
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*/ |
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abstract class FlowAncestryAbstract implements FlowInterface |
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{ |
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/** |
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* The underlying node structure |
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* |
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* @var TraversableNodeInterface|NodeInterface[] |
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*/ |
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protected $nodes = []; |
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/** |
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* The current Node index, being the next slot in $this->nodes for |
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* node additions and the current node index when executing the flow |
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* |
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* @var int |
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*/ |
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protected $nodeIdx = 0; |
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/** |
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* The last index value |
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* |
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* @var int |
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*/ |
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protected $lastIdx = 0; |
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/** |
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* The parent Flow, only set when branched |
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* |
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* @var FlowInterface|null |
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*/ |
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protected $parent; |
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/** |
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* Set parent Flow, happens only when branched |
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* |
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* @param FlowInterface $flow |
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* |
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* @return $this |
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*/ |
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public function setParent(FlowInterface $flow): FlowInterface |
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{ |
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$this->parent = $flow; |
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return $this; |
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} |
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/** |
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* Get eventual parent Flow |
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* |
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* @return FlowInterface |
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*/ |
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public function getParent(): FlowInterface |
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{ |
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return $this->parent; |
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} |
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/** |
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* Tells if this flow has a parent |
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* |
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* @return bool |
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*/ |
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public function hasParent(): bool |
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{ |
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return isset($this->parent); |
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} |
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/** |
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* Get this Flow's root Flow |
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* |
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* @param FlowInterface $flow Root Flow, or self if root flow |
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* |
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* @return FlowInterface |
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*/ |
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public function getRootFlow(FlowInterface $flow): FlowInterface |
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{ |
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while ($flow->hasParent()) { |
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$flow = $flow->getParent(); |
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} |
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return $flow; |
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} |
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} |
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fab2s /
NodalFlow
