PhabricatorShiftChartFunction.php
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PhabricatorShiftChartFunction.php
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	<?php

	final class PhabricatorShiftChartFunction
	extends PhabricatorPureChartFunction {

	const FUNCTIONKEY = 'shift';

	protected function newArguments() {
	return array(
	$this->newArgument()
	->setName('shift')
	->setType('number'),
	);
	}

	public function evaluateFunction(array $xv) {
	$shift = $this->getArgument('shift');

	$yv = array();

	foreach ($xv as $x) {
	$yv[] = $x + $shift;
	}

	return $yv;
	}

	}