Fix UnwrapFutureCompatibleIfFunctionExistsRector for no else [closes #2691]

CHANGELOG.md

@@ -115,7 +115,7 @@ PRs and issues are linked, so you can find more about it. Thanks to [ChangelogLi
 
 - [#2565] [DeadCode] Add RemoveUnusedClassesRector
 - [#2593] [DoctrineGedmoToKnpLabs] Add SoftDeletableBehaviorRector
-- [#2569] [Polyfill] Add UnwrapFutureCompatibleIfRector
+- [#2569] [Polyfill] Add UnwrapFutureCompatibleIfFunctionExistsRector
 - [#2570] [SOLID] Add ChangeNestedIfsToEarlyReturnRector & ChangeIfElseValueAssignToEarlyReturnRector
 - [#2568] [Symfony 5] Add param types
 

packages/Polyfill/src/Rector/If_/UnwrapFutureCompatibleIfFunctionExistsRector.php

@@ -5,6 +5,7 @@
 namespace Rector\Polyfill\Rector\If_;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
 use PhpParser\Node\Stmt\If_;
 use Rector\PhpParser\Node\Manipulator\IfManipulator;
 use Rector\Polyfill\FeatureSupport\FunctionSupportResolver;
@@ -13,7 +14,7 @@
 use Rector\RectorDefinition\RectorDefinition;
 
 /**
- * @see \Rector\Polyfill\Tests\Rector\If_\UnwrapFutureCompatibleIfRector\UnwrapFutureCompatibleIfRectorTest
+ * @see \Rector\Polyfill\Tests\Rector\If_\UnwrapFutureCompatibleIfFunctionExistsRector\UnwrapFutureCompatibleIfFunctionExistsRectorTest
  */
 final class UnwrapFutureCompatibleIfFunctionExistsRector extends AbstractRector
 {
@@ -80,12 +81,12 @@ public function getNodeTypes(): array
      */
     public function refactor(Node $node): ?Node
     {
-        $match = $this->ifManipulator->isIfElseWithFunctionCondition($node, 'function_exists');
+        $match = $this->ifManipulator->isIfOrIfElseWithFunctionCondition($node, 'function_exists');
         if ($match === false) {
             return null;
         }
 
-        /** @var Node\Expr\FuncCall $funcCall */
+        /** @var FuncCall $funcCall */
         $funcCall = $node->cond;
 
         $functionToExistName = $this->getValue($funcCall->args[0]->value);
@@ -97,17 +98,24 @@ public function refactor(Node $node): ?Node
             return null;
         }
 
-        foreach ($node->stmts as $key => $ifStmt) {
+        $this->unwrapStmts($node->stmts, $node);
+        $this->removeNode($node);
+
+        return null;
+    }
+
+    /**
+     * @param Node\Stmt[] $stmts
+     */
+    private function unwrapStmts(array $stmts, Node $node): void
+    {
+        foreach ($stmts as $key => $ifStmt) {
             if ($key === 0) {
                 // move comment from if to first element to keep it
                 $ifStmt->setAttribute('comments', $node->getComments());
             }
 
             $this->addNodeAfterNode($ifStmt, $node);
         }
-
-        $this->removeNode($node);
-
-        return null;
     }
 }

src/PhpParser/Node/Manipulator/IfManipulator.php

@@ -248,9 +248,9 @@ public function isIfAndElseWithSameVariableAssignAsLastStmts(If_ $if, Expr $desi
      * } else {
      * }
      */
-    public function isIfElseWithFunctionCondition(If_ $if, string $functionName): bool
+    public function isIfOrIfElseWithFunctionCondition(If_ $if, string $functionName): bool
     {
-        if (! $this->isIfWithElse($if)) {
+        if ((bool) $if->elseifs) {
             return false;
         }