Do not attempt to pretty-print new code if node was not found

Author: ondrejmirtes

src/Analyser/RuleErrorTransformer.php

@@ -130,11 +130,13 @@ public function transform(
 			/** @var Stmt[] $newStmts */
 			$newStmts = $traverser->traverse($newStmts);
 
-			$printer = new PhpPrinter(['indent' => str_repeat($indentDetector->indentCharacter, $indentDetector->indentSize)]);
-			$newCode = $printer->printFormatPreserving($newStmts, $fileNodes, $oldTokens);
+			if ($visitor->isFound()) {
+				$printer = new PhpPrinter(['indent' => str_repeat($indentDetector->indentCharacter, $indentDetector->indentSize)]);
+				$newCode = $printer->printFormatPreserving($newStmts, $fileNodes, $oldTokens);
 
-			if ($oldCode !== $newCode) {
-				$fixedErrorDiff = new FixedErrorDiff($hash, $this->differ->diff($oldCode, $newCode));
+				if ($oldCode !== $newCode) {
+					$fixedErrorDiff = new FixedErrorDiff($hash, $this->differ->diff($oldCode, $newCode));
+				}
 			}
 		}
 

src/Fixable/ReplacingNodeVisitor.php

@@ -10,6 +10,8 @@
 final class ReplacingNodeVisitor extends NodeVisitorAbstract
 {
 
+	private bool $found = false;
+
 	/**
 	 * @param callable(Node): Node $newNodeCallable
 	 */
@@ -24,6 +26,8 @@ public function enterNode(Node $node): ?Node
 			return null;
 		}
 
+		$this->found = true;
+
 		$callable = $this->newNodeCallable;
 		$newNode = $callable($node);
 		if ($newNode instanceof VirtualNode) {
@@ -33,4 +37,9 @@ public function enterNode(Node $node): ?Node
 		return $newNode;
 	}
 
+	public function isFound(): bool
+	{
+		return $this->found;
+	}
+
 }