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<?php |
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/** |
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* NextFlow (http://github.com/nextflow) |
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* |
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* @link http://github.com/nextflow/nextflow-php for the canonical source repository |
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* @copyright Copyright (c) 2014-2016 NextFlow (http://github.com/nextflow) |
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* @license https://raw.github.com/nextflow/nextflow-php/master/LICENSE MIT |
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*/ |
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namespace NextFlow\Arrays\Action; |
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use NextFlow\Core\Action\AbstractAction; |
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/** |
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* Removes the element at a certain position. |
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*/ |
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final class RemoveAtAction extends AbstractAction |
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{ |
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/** The output action socket. */ |
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const SOCKET_OUTPUT = 'out'; |
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/** The array variable socket. */ |
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const SOCKET_ARRAY = 'array'; |
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/** The index variable socket. */ |
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const SOCKET_INDEX = 'index'; |
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/** The data variable socket. */ |
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const SOCKET_DATA = 'data'; |
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/** |
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* Initializes a new instance of this class. |
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*/ |
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public function __construct() |
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{ |
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parent::__construct(); |
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$this->createSocket(self::SOCKET_OUTPUT); |
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$this->createSocket(self::SOCKET_ARRAY); |
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$this->createSocket(self::SOCKET_INDEX); |
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$this->createSocket(self::SOCKET_DATA); |
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} |
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/** |
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* Executes the node's logic. |
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*/ |
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public function execute() |
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{ |
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$array = $this->getSocket(self::SOCKET_ARRAY)->getNode(0); |
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if ($array === null) { |
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throw new \InvalidArgumentException('No array variable provided.'); |
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} |
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$index = $this->getSocket(self::SOCKET_INDEX)->getNode(0); |
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if ($index === null || $index->getValue() === null) { |
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throw new \InvalidArgumentException('No index variable provided.'); |
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} |
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// It could be that the array is an associative array. Therefor we cannot simply remove it by index, we |
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// have to count up the index and than check the key. That key is used to remove the value. |
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$arrayValue = $array->getValue(); |
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for ($i = 0; $i < $index->getValue(); ++$i) { |
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next($arrayValue); |
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} |
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$removedValue = current($arrayValue); |
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unset($arrayValue[key($arrayValue)]); |
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$data = $this->getSocket(self::SOCKET_DATA); |
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if ($data->hasNodes()) { |
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$data->getNode(0)->setValue($removedValue); |
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} |
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$array->setValue($arrayValue); |
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$this->activate(self::SOCKET_OUTPUT); |
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} |
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} |
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nextflow /
nextflow-php
