Return error code on diff with dry-run option

src/Console/Command/ProcessCommand.php

@@ -208,6 +208,10 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         $this->symfonyStyle->success('Rector is done!');
 
+        if ($this->parameterProvider->provideParameter(Option::OPTION_DRY_RUN) && count($this->fileDiffs)) {
+            return Shell::CODE_ERROR;
+        }
+
         return Shell::CODE_SUCCESS;
     }
 

src/PhpParser/Node/Commander/NodeAddingCommander.php

@@ -93,20 +93,19 @@ private function wrapToExpression(Node $node): Stmt
 
     private function createNodeVisitor(): NodeVisitor
     {
-        return new class($this->nodesToAdd) extends NodeVisitorAbstract {
+        return new class($this->nodesToAdd) extends NodeVisitorAbstract
+        {
             /**
              * @var Stmt[][]
              */
             private $nodesToAdd = [];
-
             /**
              * @param Stmt[][] $nodesToAdd
              */
             public function __construct(array $nodesToAdd)
             {
                 $this->nodesToAdd = $nodesToAdd;
             }
-
             /**
              * @return Node[]|Node|null
              */

src/PhpParser/Node/Commander/NodeRemovingCommander.php

@@ -51,20 +51,19 @@ public function isActive(): bool
 
     private function createNodeVisitor(): NodeVisitor
     {
-        return new class($this->nodesToRemove) extends NodeVisitorAbstract {
+        return new class($this->nodesToRemove) extends NodeVisitorAbstract
+        {
             /**
              * @var Stmt[]
              */
             private $nodesToRemove = [];
-
             /**
              * @param Stmt[] $nodesToRemove
              */
             public function __construct(array $nodesToRemove)
             {
                 $this->nodesToRemove = $nodesToRemove;
             }
-
             /**
              * @return int|Node|Node[]|null
              */

src/PhpParser/Node/Commander/PropertyAddingCommander.php

@@ -58,17 +58,16 @@ public function isActive(): bool
 
     private function createNodeVisitor(): NodeVisitor
     {
-        return new class($this->classMaintainer, $this->propertiesByClass) extends NodeVisitorAbstract {
+        return new class($this->classMaintainer, $this->propertiesByClass) extends NodeVisitorAbstract
+        {
             /**
              * @var ClassMaintainer
              */
             private $classMaintainer;
-
             /**
              * @var VariableInfo[][]
              */
             private $propertiesByClass = [];
-
             /**
              * @param VariableInfo[][] $propertiesByClass
              */
@@ -77,7 +76,6 @@ public function __construct(ClassMaintainer $classMaintainer, array $propertiesB
                 $this->classMaintainer = $classMaintainer;
                 $this->propertiesByClass = $propertiesByClass;
             }
-
             public function enterNode(Node $node): ?Node
             {
                 if (! $node instanceof Class_ || $node->isAnonymous()) {
@@ -86,7 +84,6 @@ public function enterNode(Node $node): ?Node
 
                 return $this->processClassNode($node);
             }
-
             private function processClassNode(Class_ $classNode): Class_
             {
                 $variableInfos = $this->propertiesByClass[spl_object_hash($classNode)] ?? [];

src/PhpParser/NodeTraverser/CallableNodeTraverser.php

@@ -23,17 +23,16 @@ public function traverseNodesWithCallable(array $nodes, callable $callable): arr
 
     private function createNodeVisitor(callable $callable): NodeVisitor
     {
-        return new class($callable) extends NodeVisitorAbstract {
+        return new class($callable) extends NodeVisitorAbstract
+        {
             /**
              * @var callable
              */
             private $callable;
-
             public function __construct(callable $callable)
             {
                 $this->callable = $callable;
             }
-
             /**
              * @return int|Node|null
              */