From 279126145e995c4d0b39a60bd6fc5fff5799199e Mon Sep 17 00:00:00 2001
From: Tomas Votruba <tomas.vot@gmail.com>
Date: Wed, 24 May 2023 11:38:51 +0200
Subject: [PATCH] Refactor PARENT_NODE away from UnsetCastRector (#3945)

---
 rules/Php72/Rector/Unset_/UnsetCastRector.php | 31 ++++++++++++-------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/rules/Php72/Rector/Unset_/UnsetCastRector.php b/rules/Php72/Rector/Unset_/UnsetCastRector.php
index 842848d461a..e72deb3af2a 100644
--- a/rules/Php72/Rector/Unset_/UnsetCastRector.php
+++ b/rules/Php72/Rector/Unset_/UnsetCastRector.php
@@ -7,10 +7,10 @@
 use PhpParser\Node;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\Cast\Unset_;
+use PhpParser\Node\Expr\FuncCall;
 use PhpParser\Node\Stmt\Expression;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\PhpVersionFeature;
-use Rector\NodeTypeResolver\Node\AttributeKey;
 use Rector\VersionBonding\Contract\MinPhpVersionInterface;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -49,34 +49,41 @@ public function getRuleDefinition(): RuleDefinition
      */
     public function getNodeTypes(): array
     {
-        return [Unset_::class, Assign::class];
+        return [Unset_::class, Assign::class, Expression::class];
     }
 
     /**
-     * @param Unset_|Assign $node
+     * @param Unset_|Assign|Expression $node
      */
     public function refactor(Node $node): ?Node
     {
         if ($node instanceof Assign) {
-            if ($node->expr instanceof Unset_) {
-                $unset = $node->expr;
+            return $this->refactorAssign($node);
+        }
 
-                if ($this->nodeComparator->areNodesEqual($node->var, $unset->expr)) {
-                    return $this->nodeFactory->createFuncCall('unset', [$node->var]);
-                }
+        if ($node instanceof Expression) {
+            if (! $node->expr instanceof Unset_) {
+                return null;
             }
 
+            $this->removeNode($node);
             return null;
         }
 
-        $parentNode = $node->getAttribute(AttributeKey::PARENT_NODE);
+        return $this->nodeFactory->createNull();
+    }
 
-        if ($parentNode instanceof Expression) {
-            $this->removeNode($node);
+    private function refactorAssign(Assign $assign): ?FuncCall
+    {
+        if (! $assign->expr instanceof Unset_) {
+            return null;
+        }
 
+        $unset = $assign->expr;
+        if (! $this->nodeComparator->areNodesEqual($assign->var, $unset->expr)) {
             return null;
         }
 
-        return $this->nodeFactory->createNull();
+        return $this->nodeFactory->createFuncCall('unset', [$assign->var]);
     }
 }