/**
* This method calculates the NPath Complexity of an if-statement, the
* meassured value is then returned as a string.
*
* <code>
* if (<expr>)
* <if-range>
* S;
*
* -- NP(if) = NP(<if-range>) + NP(<expr>) + 1 --
*
*
* if (<expr>)
* <if-range>
* else
* <else-range>
* S;
*
* -- NP(if) = NP(<if-range>) + NP(<expr>) + NP(<else-range> --
* </code>
*
* @param \PDepend\Source\AST\ASTNode $node The currently visited node.
* @param string $data The previously calculated npath value.
*
* @return string
* @since 0.9.12
*/
public function visitIfStatement($node, $data)
{
$npath = $this->sumComplexity($node->getChild(0));
foreach ($node->getChildren() as $child) {
if ($child instanceof ASTStatement) {
$stmt = $child->accept($this, 1);
$npath = MathUtil::add($npath, $stmt);
}
}
if (!$node->hasElse()) {
$npath = MathUtil::add($npath, '1');
}
return MathUtil::mul($npath, $data);
}
