Add support for Repository::findOneBy

Add support for the TYPO3 Repository findOneBy method

Author: sascha-egerer

extension.neon

@@ -19,3 +19,7 @@ services:
         class: SaschaEgerer\PhpstanTypo3\Type\ObjectStorageDynamicReturnTypeExtension
         tags:
             - phpstan.broker.dynamicMethodReturnTypeExtension
+    -
+        class: SaschaEgerer\PhpstanTypo3\Type\RepositoryDynamicReturnTypeExtension
+        tags:
+            - phpstan.broker.dynamicMethodReturnTypeExtension

src/Type/RepositoryDynamicReturnTypeExtension.php

@@ -0,0 +1,42 @@
+<?php
+declare(strict_types=1);
+
+namespace SaschaEgerer\PhpstanTypo3\Type;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Reflection\MethodReflection;
+use TYPO3\CMS\Core\Utility\ClassNamingUtility;
+
+class RepositoryDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+    public function getClass(): string
+    {
+        return \TYPO3\CMS\Extbase\Persistence\RepositoryInterface::class;
+    }
+
+    public function isMethodSupported(
+        MethodReflection $methodReflection
+    ): bool {
+        return $methodReflection->getName() === 'findByUid';
+    }
+
+    public function getTypeFromMethodCall(
+        MethodReflection $methodReflection,
+        MethodCall $methodCall,
+        Scope $scope
+    ): Type {
+        $variableType = $scope->getType($methodCall->var);
+
+        if (!($variableType instanceof ObjectType) || !is_subclass_of($variableType->getClassName(), $this->getClass())) {
+            return $methodReflection->getReturnType();
+        }
+
+        $modelName = ClassNamingUtility::translateRepositoryNameToModelName($variableType->getClassName());
+
+        return new ObjectType($modelName);
+    }
+}