switchManipulator = $switchManipulator; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Change switch with only 1 check to if', [new CodeSample(<<<'CODE_SAMPLE' class SomeObject { public function run($value) { $result = 1; switch ($value) { case 100: $result = 1000; } return $result; } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeObject { public function run($value) { $result = 1; if ($value === 100) { $result = 1000; } return $result; } } CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [Switch_::class]; } /** * @param Switch_ $node * @return Node\Stmt[]|If_|null */ public function refactor(Node $node) { if (\count($node->cases) !== 1) { return null; } $onlyCase = $node->cases[0]; // only default → basically unwrap if (!$onlyCase->cond instanceof Expr) { // remove default clause because it cause syntax error return \array_filter($onlyCase->stmts, static function (Stmt $stmt) : bool { return !$stmt instanceof Break_; }); } $if = new If_(new Identical($node->cond, $onlyCase->cond)); $if->stmts = $this->switchManipulator->removeBreakNodes($onlyCase->stmts); return $if; } }