/
SumViewHelper.php
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/
SumViewHelper.php
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<?php
namespace FluidTYPO3\Vhs\ViewHelpers\Math;
/***************************************************************
* Copyright notice
*
* (c) 2014 Claus Due <claus@namelesscoder.net>
*
* All rights reserved
*
* This script is part of the TYPO3 project. The TYPO3 project is
* free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* The GNU General Public License can be found at
* http://www.gnu.org/copyleft/gpl.html.
*
* This script is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
* Math: Sum
*
* Performs sum of $a and $b. A can be an array and $b a
* number, in which case each member of $a gets summed with $b.
* If $a is an array and $b is not provided then array_sum is
* used to return a single numeric value. If both $a and $b are
* arrays, each member of $a is summed against the corresponding
* member in $b compared using index.
*
* @author Claus Due <claus@namelesscoder.net>
* @package Vhs
* @subpackage ViewHelpers\Math
*/
class SumViewHelper extends AbstractMultipleMathViewHelper {
/**
* @return void
*/
public function initializeArguments() {
parent::initializeArguments();
$this->overrideArgument('b', 'mixed', 'Optional: Second number or Iterator/Traversable/Array for calculation', FALSE, NULL);
}
/**
* @return mixed
* @throw Exception
*/
public function render() {
$a = $this->getInlineArgument();
$b = $this->arguments['b'];
$aIsIterable = $this->assertIsArrayOrIterator($a);
if (TRUE === $aIsIterable && NULL === $b) {
$a = $this->convertTraversableToArray($a);
return array_sum($a);
}
return $this->calculate($a, $b);
}
/**
* @param mixed $a
* @param $b
* @return mixed
*/
protected function calculateAction($a, $b) {
return $a + $b;
}
}