public function testCouplingTakesCareOfReturnedValues()
{
$filename = __DIR__ . '/../../../../../resources/coupling/f1.php';
$extractor = new Extractor(new Tokenizer());
$classmap = new ClassMap();
$classmap->push($filename, $extractor->extract($filename));
$coupling = new Coupling();
$this->result = $coupling->calculate($classmap);
$this->assertEquals(0, $this->result->get('\\ClassWhoUseAnother')->getAfferentCoupling());
$this->assertEquals(1, $this->result->get('\\ClassWhoUseAnother')->getEfferentCoupling());
$this->assertEquals(1, $this->result->get('\\ClassWhoIsUsed')->getAfferentCoupling());
$this->assertEquals(0, $this->result->get('\\ClassWhoIsUsed')->getEfferentCoupling());
}
/**
* Calculates lcom for file (and not for class)
*
* @param string $filename
* @return Result
*/
public function calculate($filename)
{
$rOOP = $this->classMap->getClassesIn($filename);
$result = new Result($filename);
$n = 0;
$lcom = new LackOfCohesionOfMethods();
foreach ($rOOP->getClasses() as $class) {
$r = $lcom->calculate($class);
$n += $r->getLcom();
}
$result->setLcom($n);
return $result;
}
/**
* Calculates system complexity
*
* @param string $filename
* @return Result
*/
public function calculate($filename)
{
$rOOP = $this->classMap->getClassesIn($filename);
$result = new Result($filename);
$len = 0;
$sy = $dc = $sc = array();
$calculator = new SystemComplexity();
foreach ($rOOP->getClasses() as $class) {
$r = $calculator->calculate($class);
$len += sizeof($class->getMethods(), COUNT_NORMAL);
$sy[] = $r->getTotalSystemComplexity();
$dc[] = $r->getTotalDataComplexity();
$sc[] = $r->getTotalStructuralComplexity();
}
if ($len > 0 && sizeof($dc, COUNT_NORMAL) > 0) {
$result->setRelativeStructuralComplexity(round(array_sum($sc) / $len, 2))->setRelativeDataComplexity(round(array_sum($dc) / $len, 2))->setRelativeSystemComplexity(round(array_sum($sy) / $len, 2))->setTotalStructuralComplexity(array_sum($sc))->setTotalDataComplexity(array_sum($dc))->setTotalSystemComplexity(array_sum($dc) + array_sum($sc));
}
return $result;
}
/**
* Calculates coupling for file (and not for class)
*
* @param string $filename
* @return Result
*/
public function calculate($filename)
{
$rOOP = $this->classMap->getClassesIn($filename);
$result = new Result($filename);
// case of file doesn't contain any class
if (null === $rOOP) {
return $result;
}
$instability = $ce = $ca = 0;
$classes = $rOOP->getClasses();
foreach ($classes as $declaredClass) {
$declaredClassCoupling = $this->couplingMap->get($declaredClass->getFullname());
$ce += $declaredClassCoupling->getEfferentCoupling();
$ca += $declaredClassCoupling->getAfferentCoupling();
}
if ($ca + $ce > 0) {
$instability = $ce / ($ca + $ce);
}
$result->setAfferentCoupling($ca)->setEfferentCoupling($ce)->setInstability($instability);
return $result;
}
/**
* Extracts afferent and efferent coupling
*
* @param ClassMap $result
* @return array
*/
private function extractCoupling(ClassMap $result)
{
$results = $result->all();
$classes = array();
foreach ($results as $result) {
$classes = array_merge($classes, $result->getClasses());
}
$map = array();
foreach ($classes as $class) {
if (!isset($map[$class->getFullname()])) {
$map[$class->getFullname()] = new Result($class->getFullname());
}
$dependencies = $class->getDependencies();
$map[$class->getFullname()]->setEfferentCoupling(sizeof($dependencies, COUNT_NORMAL));
foreach ($dependencies as $dependency) {
if (!isset($map[$dependency])) {
$map[$dependency] = new Result($dependency);
}
$map[$dependency]->setAfferentCoupling($map[$dependency]->getAfferentCoupling() + 1);
}
}
return $map;
}
/**
* Run analyze
*
* @param $filename
* @return \Hal\Component\Result\ResultSet
*/
public function execute($filename)
{
$rHalstead = $this->halstead->calculate($filename);
$rLoc = $this->loc->calculate($filename);
$rMcCabe = $this->mcCabe->calculate($filename);
$rMyer = $this->myer->calculate($filename);
$rMaintenability = $this->maintenabilityIndex->calculate($rHalstead, $rLoc, $rMcCabe);
$resultSet = new \Hal\Component\Result\ResultSet($filename);
$resultSet->setLoc($rLoc)->setMcCabe($rMcCabe)->setMyer($rMyer)->setHalstead($rHalstead)->setMaintenabilityIndex($rMaintenability);
if ($this->withOOP) {
$rOOP = $this->extractor->extract($filename);
$this->classMap->push($filename, $rOOP);
$resultSet->setOOP($rOOP);
}
return $resultSet;
}
