diff options
Diffstat (limited to 'vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/FirstFindingVisitor.php')
-rw-r--r-- | vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/FirstFindingVisitor.php | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/FirstFindingVisitor.php b/vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/FirstFindingVisitor.php new file mode 100644 index 000000000..596a7d7fd --- /dev/null +++ b/vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/FirstFindingVisitor.php @@ -0,0 +1,50 @@ +<?php declare(strict_types=1); + +namespace PhpParser\NodeVisitor; + +use PhpParser\Node; +use PhpParser\NodeTraverser; +use PhpParser\NodeVisitorAbstract; + +/** + * This visitor can be used to find the first node satisfying some criterion determined by + * a filter callback. + */ +class FirstFindingVisitor extends NodeVisitorAbstract +{ + /** @var callable Filter callback */ + protected $filterCallback; + /** @var null|Node Found node */ + protected $foundNode; + + public function __construct(callable $filterCallback) { + $this->filterCallback = $filterCallback; + } + + /** + * Get found node satisfying the filter callback. + * + * Returns null if no node satisfies the filter callback. + * + * @return null|Node Found node (or null if not found) + */ + public function getFoundNode() { + return $this->foundNode; + } + + public function beforeTraverse(array $nodes) { + $this->foundNode = null; + + return null; + } + + public function enterNode(Node $node) { + $filterCallback = $this->filterCallback; + if ($filterCallback($node)) { + $this->foundNode = $node; + return NodeTraverser::STOP_TRAVERSAL; + } + + return null; + } +} |