/**
* Calculates two metrics. The number of added methods and the number of
* overwritten methods.
*
* @param PHP_Depend_Code_Class $class The context class instance.
*
* @return void
* @since 0.9.10
*/
private function calculateNumberOfAddedAndOverwrittenMethods(PHP_Depend_Code_Class $class)
{
$parentClass = $class->getParentClass();
if ($parentClass === null) {
return;
}
$parentMethodNames = array();
foreach ($parentClass->getAllMethods() as $method) {
$parentMethodNames[$method->getName()] = $method->isAbstract();
}
$numberOfAddedMethods = 0;
$numberOfOverwrittenMethods = 0;
foreach ($class->getAllMethods() as $method) {
if ($method->getParent() !== $class) {
continue;
}
if (isset($parentMethodNames[$method->getName()])) {
if (!$parentMethodNames[$method->getName()]) {
++$numberOfOverwrittenMethods;
}
} else {
++$numberOfAddedMethods;
}
}
$uuid = $class->getUuid();
$this->nodeMetrics[$uuid][self::M_NUMBER_OF_ADDED_METHODS] = $numberOfAddedMethods;
$this->nodeMetrics[$uuid][self::M_NUMBER_OF_OVERWRITTEN_METHODS] = $numberOfOverwrittenMethods;
}
/**
* Initializes a empty metric container for the given class node.
*
* @param PHP_Depend_Code_Class $class The context class instance.
*
* @return void
* @since 0.9.10
*/
private function _initNodeMetricsForClass(PHP_Depend_Code_Class $class)
{
if (is_object($class->getParentClass())) {
$this->_initNodeMetricsForClass($class->getParentClass());
}
$uuid = $class->getUUID();
if (isset($this->_nodeMetrics[$uuid])) {
return;
}
++$this->_numberOfClasses;
$this->_nodeMetrics[$uuid] = array(self::M_DEPTH_OF_INHERITANCE_TREE => 0, self::M_NUMBER_OF_ADDED_METHODS => 0, self::M_NUMBER_OF_DERIVED_CLASSES => 0, self::M_NUMBER_OF_OVERWRITTEN_METHODS => 0);
}
/**
* Calculates the Weight Method Per Class metric, this method only counts
* protected and public methods of parent classes.
*
* @param PHP_Depend_Code_Class $class The context class instance.
*
* @return integer
*/
private function _calculateWMCi(PHP_Depend_Code_Class $class)
{
// List of methods, this method only counts not overwritten methods.
$ccn = array();
// First collect all methods of the context class
foreach ($class->getMethods() as $m) {
$ccn[$m->getName()] = $this->_cyclomaticAnalyzer->getCCN2($m);
}
// Get parent class and collect all non private methods.
$parent = $class->getParentClass();
while ($parent !== null) {
// Count all methods
foreach ($parent->getMethods() as $m) {
if (!$m->isPrivate() && !isset($methods[$m->getName()])) {
$ccn[$m->getName()] = $this->_cyclomaticAnalyzer->getCCN2($m);
}
}
// Fetch parent class
$parent = $parent->getParentClass();
}
return array_sum($ccn);
}
