Help Psalm guess the correct var type

angelov · angelov · commit ede276e79ae4 · 2022-01-11T23:36:44.000+01:00
diff --git a/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php b/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php
@@ -216,7 +216,11 @@ private function guessHandledClasses(\ReflectionClass $handlerClass, string $ser
         }
 
         $parameters = $method->getParameters();
-        if (!$type = $parameters[0]->getType()) {
+
+        /** @var \ReflectionNamedType|null */
+        $type = $parameters[0]->getType();
+
+        if (!$type) {
             throw new RuntimeException(sprintf('Invalid handler service "%s": argument "$%s" of method "%s::%s()" must have a type-hint corresponding to the message class it handles.', $serviceId, $parameters[0]->getName(), $handlerClass->getName(), $methodName));
         }
 

Original file line number	Diff line number	Diff line change
`@@ -216,7 +216,11 @@ private function guessHandledClasses(\ReflectionClass $handlerClass, string $ser`
`216`	`216`	`}`
`217`	`217`
`218`	`218`	`$parameters = $method->getParameters();`
`219`		`- if (!$type = $parameters[0]->getType()) {`
	`219`	`+`
	`220`	`+ /** @var \ReflectionNamedType\|null */`
	`221`	`+ $type = $parameters[0]->getType();`
	`222`	`+`
	`223`	`+ if (!$type) {`
`220`	`224`	`throw new RuntimeException(sprintf('Invalid handler service "%s": argument "$%s" of method "%s::%s()" must have a type-hint corresponding to the message class it handles.', $serviceId, $parameters[0]->getName(), $handlerClass->getName(), $methodName));`
`221`	`225`	`}`
`222`	`226`