--- /dev/null
+<?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;
+ }
+}