/**
* Calculates Card And Agresti metric
*
* Fan-out = Structural fan-out = Number of other procedures this procedure calls
* v = number of input/output variables for a procedure
*
* (SC) Structural complexity = fan-out^2
* (DC) Data complexity = v / (fan-out + 1)
*
* @param ReflectedClass $class
* @return Result
*/
public function calculate(ReflectedClass $class)
{
$result = new Result();
$sy = $dc = $sc = array();
// in system
foreach ($class->getMethods() as $method) {
$fanout = sizeof($method->getDependencies(), COUNT_NORMAL);
$v = sizeof($method->getArguments(), COUNT_NORMAL) + sizeof($method->getReturns(), COUNT_NORMAL);
$ldc = $v / ($fanout + 1);
$lsc = pow($fanout, 2);
$sy[] = $ldc + $lsc;
$dc[] = $ldc;
$sc[] = $lsc;
}
$result->setRelativeStructuralComplexity(empty($sc) ? 0 : round(array_sum($sc) / sizeof($sc, COUNT_NORMAL), 2))->setRelativeDataComplexity(empty($dc) ? 0 : round(array_sum($dc) / sizeof($dc, COUNT_NORMAL), 2))->setRelativeSystemComplexity(empty($sy) ? 0 : round(array_sum($sy) / sizeof($sy, COUNT_NORMAL), 2))->setTotalStructuralComplexity(round(array_sum($sc), 2))->setTotalDataComplexity(round(array_sum($dc), 2))->setTotalSystemComplexity(round(array_sum($dc) + array_sum($sc), 2));
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;
}