Fix ReversePipeTransformerVisitor

Author: ondrejmirtes

src/Parser/ReversePipeTransformerVisitor.php

@@ -17,10 +17,18 @@ public function enterNode(Node $node): ?Node
 			$attributes = $node->getAttributes();
 			$origPipeAttributes = $attributes[PipeTransformerVisitor::ORIGINAL_PIPE_ATTRIBUTE_NAME] ?? [];
 			if ($origPipeAttributes !== [] && count($node->getArgs()) === 1) {
-				unset($attributes[PipeTransformerVisitor::ORIGINAL_PIPE_ATTRIBUTE_NAME]);
+				if ($node->name instanceof Node\Name) {
+					unset($attributes[PipeTransformerVisitor::ORIGINAL_PIPE_ATTRIBUTE_NAME]);
+					return new Node\Expr\BinaryOp\Pipe(
+						$node->getArgs()[0]->value,
+						new Node\Expr\FuncCall($node->name, [new Node\VariadicPlaceholder()], attributes: $attributes),
+						attributes: $origPipeAttributes,
+					);
+				}
+
 				return new Node\Expr\BinaryOp\Pipe(
 					$node->getArgs()[0]->value,
-					new Node\Expr\FuncCall($node->name, [new Node\VariadicPlaceholder()], attributes: $attributes),
+					$node->name,
 					attributes: $origPipeAttributes,
 				);
 			}

tests/PHPStan/Analyser/nsrt/pipe-operator.php

@@ -113,13 +113,13 @@ public function doArrayMap(array $ints): void
 		});
 
 		assertType('array<int<1, max>>', $ints |> function (array $x) {
-		assertType('array<int<1, max>>', $x);
-		return array_map(function (int $i) {
-			assertType('int<1, max>', $i);
+			assertType('array<int<1, max>>', $x);
+			return array_map(function (int $i) {
+				assertType('int<1, max>', $i);
 
-			return $i;
-		}, $x);
-	});
+				return $i;
+			}, $x);
+		});
 	}
 
 	/**