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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\Math\Action; |
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use NextFlow\Core\Action\AbstractAction as BaseAbstractAction; |
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/** |
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* The base final class for simple math actions. |
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*/ |
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View Code Duplication |
abstract class AbstractAction extends BaseAbstractAction |
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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 left variable socket. */ |
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const SOCKET_LFT = 'lft'; |
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/** The right variable socket. */ |
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const SOCKET_RGT = 'rgt'; |
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/** The result variable socket. */ |
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const SOCKET_RESULT = 'result'; |
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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_LFT); |
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$this->createSocket(self::SOCKET_RGT); |
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$this->createSocket(self::SOCKET_RESULT); |
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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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$lft = $this->getSocket(self::SOCKET_LFT)->getNode(0); |
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if ($lft === null || $lft->getValue() === null) { |
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throw new \InvalidArgumentException('No left variable provided.'); |
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} |
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$rgt = $this->getSocket(self::SOCKET_RGT)->getNode(0); |
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if ($rgt === null || $rgt->getValue() === null) { |
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throw new \InvalidArgumentException('No right variable provided.'); |
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} |
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$result = $this->getSocket(self::SOCKET_RESULT)->getNode(0); |
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if ($result === null) { |
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throw new \InvalidArgumentException('No result variable provided.'); |
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} |
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$calculatedValue = $this->calculateValue($lft->getValue(), $rgt->getValue()); |
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$result->setValue($calculatedValue); |
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$this->activate(self::SOCKET_OUTPUT); |
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} |
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/** |
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* The method that calculates the value. |
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* |
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* @param double|float|int $lft The left value. |
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* @param double|float|int $rgt The right value. |
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* @return double|float|int Returns the calculated value. |
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*/ |
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abstract protected function calculateValue($lft, $rgt); |
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} |
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