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annotate vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/FindingVisitor.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | 5fb285c0d0e3 |
children |
rev | line source |
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Chris@13 | 1 <?php declare(strict_types=1); |
Chris@13 | 2 |
Chris@13 | 3 namespace PhpParser\NodeVisitor; |
Chris@13 | 4 |
Chris@13 | 5 use PhpParser\Node; |
Chris@13 | 6 use PhpParser\NodeVisitorAbstract; |
Chris@13 | 7 |
Chris@13 | 8 /** |
Chris@13 | 9 * This visitor can be used to find and collect all nodes satisfying some criterion determined by |
Chris@13 | 10 * a filter callback. |
Chris@13 | 11 */ |
Chris@13 | 12 class FindingVisitor extends NodeVisitorAbstract |
Chris@13 | 13 { |
Chris@13 | 14 /** @var callable Filter callback */ |
Chris@13 | 15 protected $filterCallback; |
Chris@13 | 16 /** @var Node[] Found nodes */ |
Chris@13 | 17 protected $foundNodes; |
Chris@13 | 18 |
Chris@13 | 19 public function __construct(callable $filterCallback) { |
Chris@13 | 20 $this->filterCallback = $filterCallback; |
Chris@13 | 21 } |
Chris@13 | 22 |
Chris@13 | 23 /** |
Chris@13 | 24 * Get found nodes satisfying the filter callback. |
Chris@13 | 25 * |
Chris@13 | 26 * Nodes are returned in pre-order. |
Chris@13 | 27 * |
Chris@13 | 28 * @return Node[] Found nodes |
Chris@13 | 29 */ |
Chris@13 | 30 public function getFoundNodes() : array { |
Chris@13 | 31 return $this->foundNodes; |
Chris@13 | 32 } |
Chris@13 | 33 |
Chris@13 | 34 public function beforeTraverse(array $nodes) { |
Chris@13 | 35 $this->foundNodes = []; |
Chris@13 | 36 |
Chris@13 | 37 return null; |
Chris@13 | 38 } |
Chris@13 | 39 |
Chris@13 | 40 public function enterNode(Node $node) { |
Chris@13 | 41 $filterCallback = $this->filterCallback; |
Chris@13 | 42 if ($filterCallback($node)) { |
Chris@13 | 43 $this->foundNodes[] = $node; |
Chris@13 | 44 } |
Chris@13 | 45 |
Chris@13 | 46 return null; |
Chris@13 | 47 } |
Chris@13 | 48 } |