> */ public function getNodeTypes() : array { return [If_::class]; } /** * @param If_ $node */ public function refactor(Node $node) : ?Node { return $this->shortenElseIf($node); } private function shortenElseIf(If_ $node) : ?If_ { if (!$node->else instanceof Else_) { return null; } $else = $node->else; if (\count($else->stmts) !== 1) { return null; } $if = $else->stmts[0]; if (!$if instanceof If_) { return null; } // Try to shorten the nested if before transforming it to elseif $refactored = $this->shortenElseIf($if); if ($refactored instanceof If_) { $if = $refactored; } if ($if->stmts === []) { $nop = new Nop(); $nop->setAttribute(AttributeKey::COMMENTS, $if->getComments()); $if->stmts[] = $nop; } else { $currentStmt = \current($if->stmts); $mergedComments = \array_merge($if->getComments(), $currentStmt->getComments()); $currentStmt->setAttribute(AttributeKey::COMMENTS, $mergedComments); } $node->elseifs[] = new ElseIf_($if->cond, $if->stmts); $node->else = $if->else; $node->elseifs = \array_merge($node->elseifs, $if->elseifs); return $node; } }