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<?php |
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/* |
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* Go! AOP framework |
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* |
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* @copyright Copyright 2017, Lisachenko Alexander <[email protected]> |
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* |
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* This source file is subject to the license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace Go\Instrument\Transformer; |
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use PhpParser\Node; |
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use PhpParser\NodeVisitorAbstract; |
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/** |
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* Node finder visitor for compatibility with PHP-Parser < 4.0 |
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*/ |
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class NodeFinderVisitor extends NodeVisitorAbstract |
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{ |
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/** |
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* List of node class names to search |
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* |
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* @var string[] |
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*/ |
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protected $searchNodes; |
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/** |
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* List of found nodes |
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* |
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* @var Node[] Found nodes |
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*/ |
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protected $foundNodes; |
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/** |
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* @param array $searchNodes List of node names to search in AST |
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*/ |
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public function __construct(array $searchNodes) |
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{ |
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$this->searchNodes = $searchNodes; |
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} |
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/** |
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* Get found nodes. |
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* |
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* Nodes are returned in pre-order. |
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* |
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* @return Node[] Found nodes |
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*/ |
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public function getFoundNodes() |
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{ |
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return $this->foundNodes; |
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} |
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/** |
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* Called once before traversal. |
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* |
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* Return value semantics: |
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* * null: $nodes stays as-is |
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* * otherwise: $nodes is set to the return value |
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* |
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* @param Node[] $nodes Array of nodes |
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* |
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* @return null|Node[] Array of nodes |
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*/ |
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public function beforeTraverse(array $nodes) |
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{ |
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$this->foundNodes = []; |
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return null; |
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} |
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/** |
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* Called when entering a node. |
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* |
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* Return value semantics: |
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* * null |
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* => $node stays as-is |
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* * NodeTraverser::DONT_TRAVERSE_CHILDREN |
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* => Children of $node are not traversed. $node stays as-is |
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* * NodeTraverser::STOP_TRAVERSAL |
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* => Traversal is aborted. $node stays as-is |
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* * otherwise |
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* => $node is set to the return value |
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* |
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* @param Node $node Node |
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* |
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* @return null|int|Node Node |
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*/ |
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public function enterNode(Node $node) |
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{ |
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foreach ($this->searchNodes as $nodeClassName) { |
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if ($node instanceof $nodeClassName) { |
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$this->foundNodes[] = $node; |
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} |
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} |
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return null; |
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} |
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} |
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goaop /
framework
