/** * Calculates Maintainability Index * * @param \Hal\Metrics\Complexity\Text\Halstead\Result $rHalstead * @param \Hal\Metrics\Complexity\Text\Length\Result $rLoc * @param \Hal\Metrics\Complexity\Component\McCabe\Result $rMcCabe * @return Result */ public function calculate(\Hal\Metrics\Complexity\Text\Halstead\Result $rHalstead, \Hal\Metrics\Complexity\Text\Length\Result $rLoc, \Hal\Metrics\Complexity\Component\McCabe\Result $rMcCabe) { $result = new Result(); $result->setMaintainabilityIndexWithoutComment(max((171 - 5.2 * \log($rHalstead->getVolume()) - 0.23 * $rMcCabe->getCyclomaticComplexityNumber() - 16.2 * \log($rLoc->getLogicalLoc())) * 100 / 171, 0)); // comment weight if ($rLoc->getLoc() > 0) { $CM = $rLoc->getCommentLoc() / $rLoc->getLoc(); $result->setCommentWeight(50 * sin(sqrt(2.4 * $CM))); } return $result; }