master

PhabricatorSumChartFunction.php
View Options

			<?php

			final class PhabricatorSumChartFunction
			extends PhabricatorHigherOrderChartFunction {

			const FUNCTIONKEY = 'sum';

			protected function newArguments() {
			return array(
			$this->newArgument()
			->setName('f')
			->setType('function')
			->setRepeatable(true),
			);
			}

			public function evaluateFunction(array $xv) {
			$fv = array();
			foreach ($this->getFunctionArguments() as $function) {
			$fv[] = $function->evaluateFunction($xv);
			}

			$n = count($xv);
			$yv = array_fill(0, $n, null);

			foreach ($fv as $f) {
			for ($ii = 0; $ii < $n; $ii++) {
			if ($f[$ii] !== null) {
			if (!isset($yv[$ii])) {
			$yv[$ii] = 0;
			}
			$yv[$ii] += $f[$ii];
			}
			}
			}

			return $yv;
			}

			}