closureArrowFunctionAnalyzer = $closureArrowFunctionAnalyzer; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Change closure to arrow function', [new CodeSample(<<<'CODE_SAMPLE' class SomeClass { public function run($meetups) { return array_filter($meetups, function (Meetup $meetup) { return is_object($meetup); }); } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeClass { public function run($meetups) { return array_filter($meetups, fn(Meetup $meetup) => is_object($meetup)); } } CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [Closure::class]; } /** * @param Closure $node */ public function refactor(Node $node) : ?Node { $returnExpr = $this->closureArrowFunctionAnalyzer->matchArrowFunctionExpr($node); if (!$returnExpr instanceof Expr) { return null; } $arrowFunction = new ArrowFunction(['params' => $node->params, 'returnType' => $node->returnType, 'byRef' => $node->byRef, 'expr' => $returnExpr]); if ($node->static) { $arrowFunction->static = \true; } $comments = $node->stmts[0]->getAttribute(AttributeKey::COMMENTS) ?? []; if ($comments !== []) { $this->mirrorComments($arrowFunction->expr, $node->stmts[0]); $arrowFunction->setAttribute(AttributeKey::COMMENT_CLOSURE_RETURN_MIRRORED, \true); } return $arrowFunction; } public function provideMinPhpVersion() : int { return PhpVersionFeature::ARROW_FUNCTION; } }