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<?php |
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/* |
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* (c) Jean-François Lépine <https://twitter.com/Halleck45> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Hal\Metrics\Complexity\Structural\HenryAndKafura; |
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use Hal\Component\OOP\Extractor\ClassMap; |
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/** |
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* Estimates coupling by file: average for all declared classes in this file |
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* |
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* @author Jean-François Lépine <https://twitter.com/Halleck45> |
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*/ |
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class FileCoupling { |
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/** |
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* @var \Hal\Component\OOP\Extractor\ClassMap |
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*/ |
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private $classMap; |
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/** |
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* @var ResultMap |
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*/ |
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private $couplingMap; |
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/** |
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* Constructor |
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* |
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* @param ClassMap $classMap |
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* @param ResultMap $couplingMap |
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*/ |
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public function __construct(ClassMap $classMap, ResultMap $couplingMap) |
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{ |
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$this->classMap = $classMap; |
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$this->couplingMap = $couplingMap; |
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} |
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/** |
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* Calculates coupling for file (and not for class) |
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* |
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* @param string $filename |
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* @return Result |
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*/ |
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public function calculate($filename) |
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{ |
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$rOOP = $this->classMap->getClassesIn($filename); |
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$result = new Result($filename); |
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// case of file doesn't contain any class |
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if(null === $rOOP) { |
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return $result; |
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} |
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$instability = $ce = $ca = 0; |
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$classes = $rOOP->getClasses(); |
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foreach($classes as $declaredClass) { |
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$declaredClassCoupling = $this->couplingMap->get($declaredClass->getFullname()); |
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$ce += $declaredClassCoupling->getEfferentCoupling(); |
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$ca += $declaredClassCoupling->getAfferentCoupling(); |
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} |
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if($ca + $ce > 0) { |
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$instability = $ce / ($ca + $ce); |
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} |
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$result |
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->setAfferentCoupling($ca) |
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->setEfferentCoupling($ce) |
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->setInstability($instability); |
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return $result; |
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} |
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}; |
Halleck45 /
PhpMetrics
