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<?php |
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namespace Hal\Metric\Helper; |
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use PhpParser\Node\Expr\Cast; |
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use PhpParser\Node\Expr\Variable; |
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use PhpParser\Node\Stmt\ClassMethod; |
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use PhpParser\Node\Stmt\Return_; |
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/** |
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* Class RoleOfMethodDetector |
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* @package Hal\Metric\Helper |
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*/ |
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class RoleOfMethodDetector |
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{ |
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/** |
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* @var array |
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*/ |
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private $fingerprints = [ |
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'getter' => [ |
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'PhpParser\\Node\\Stmt\\ClassMethod', |
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'PhpParser\\Node\\Stmt\\Return_', |
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'PhpParser\\Node\\Expr\\PropertyFetch', |
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'PhpParser\\Node\\Expr\\Variable', |
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], |
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'setter' => [ |
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'PhpParser\\Node\\Stmt\\ClassMethod', |
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'PhpParser\\Node\\Expr\\Assign', |
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'PhpParser\\Node\\Expr\\Variable', |
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'PhpParser\\Node\\Expr\\PropertyFetch', |
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'PhpParser\\Node\\Expr\\Variable', |
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'PhpParser\\Node\\Param', |
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] |
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]; |
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/** |
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* @param $node |
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* @return string|null |
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*/ |
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public function detects($node) |
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{ |
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if (!$node instanceof ClassMethod) { |
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return null; |
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} |
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// build a fingerprint of the given method |
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$fingerprintOfMethod = []; |
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iterate_over_node($node, function ($node) use (&$fingerprintOfMethod) { |
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// avoid cast |
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if ($node instanceof Cast) { |
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return; |
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} |
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// avoid fluent interface |
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if ($node instanceof Return_ && $node->expr instanceof Variable && $node->expr->name === 'this') { |
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unset($fingerprintOfMethod[sizeof($fingerprintOfMethod) - 1]); |
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return; |
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} |
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$fingerprintOfMethod[] = get_class($node); |
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}); |
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$fingerprintOfMethod = array_reverse($fingerprintOfMethod); |
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// compare with database of fingerprints |
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foreach ($this->fingerprints as $type => $fingerprint) { |
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if ($fingerprint == $fingerprintOfMethod) { |
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return $type; |
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} |
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} |
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return null; |
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} |
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} |
phpmetrics /
PhpMetrics
