* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace SebastianBergmann\CodeCoverage\StaticAnalysis; use function array_pop; use function count; use PhpParser\Node; use PhpParser\NodeVisitor; /** * Visitor that connects a child node to its parent node optimized for Attribute nodes. * * On the child node, the parent node can be accessed through * $node->getAttribute('parent'). * * @internal This class is not covered by the backward compatibility promise for phpunit/php-code-coverage */ final class AttributeParentConnectingVisitor implements NodeVisitor { /** * @var Node[] */ private array $stack = []; public function beforeTraverse(array $nodes): null { $this->stack = []; return null; } public function enterNode(Node $node): null { if ($this->stack !== [] && ($node instanceof Node\Attribute || $node instanceof Node\AttributeGroup)) { $node->setAttribute('parent', $this->stack[count($this->stack) - 1]); } $this->stack[] = $node; return null; } public function leaveNode(Node $node): null { array_pop($this->stack); return null; } public function afterTraverse(array $nodes): null { return null; } }