Fix trait detection recursion for anonymous classes

src/Type/FileTypeMapper.php

@@ -9,6 +9,7 @@
 use PHPStan\BetterReflection\Util\GetLastDocComment;
 use PHPStan\Broker\AnonymousClassNameHelper;
 use PHPStan\Cache\Cache;
+use PHPStan\File\FileHelper;
 use PHPStan\Parser\Parser;
 use PHPStan\Php\PhpVersion;
 use PHPStan\PhpDoc\PhpDocNodeResolver;
@@ -74,6 +75,7 @@ public function __construct(
 		private Cache $cache,
 		private AnonymousClassNameHelper $anonymousClassNameHelper,
 		private PhpVersion $phpVersion,
+		private FileHelper $fileHelper,
 	)
 	{
 	}
@@ -87,6 +89,8 @@ public function getResolvedPhpDoc(
 		string $docComment,
 	): ResolvedPhpDocBlock
 	{
+		$fileName = $this->fileHelper->normalizePath($fileName);
+
 		if ($className === null && $traitName !== null) {
 			throw new ShouldNotHappenException();
 		}
@@ -189,7 +193,7 @@ private function resolvePhpDocStringToDocNode(string $phpDocString): PhpDocNode
 	private function getNameScopeMap(string $fileName): array
 	{
 		if (!isset($this->memoryCache[$fileName])) {
-			$cacheKey = sprintf('%s-phpdocstring-v18-filter-ast', $fileName);
+			$cacheKey = sprintf('%s-phpdocstring-v19-trait-detection-recursion', $fileName);
 			$variableCacheKey = sprintf('%s-%s', implode(',', array_map(static fn (array $file): string => sprintf('%s-%d', $file['filename'], $file['modifiedTime']), $this->getCachedDependentFilesWithTimestamps($fileName))), $this->phpVersion->getVersionString());
 			$map = $this->cache->load($cacheKey, $variableCacheKey);
 
@@ -277,6 +281,10 @@ private function createNameScopeMap(
 			$this->phpParser->parseFile($fileName),
 			function (Node $node) use ($fileName, $lookForTrait, &$traitFound, $traitMethodAliases, $originalClassFileName, &$nameScopeMap, &$classStack, &$typeAliasStack, &$namespace, &$functionStack, &$uses, &$typeMapStack): ?int {
 				if ($node instanceof Node\Stmt\ClassLike) {
+					if ($traitFound && $fileName === $originalClassFileName) {
+						return self::SKIP_NODE;
+					}
+
 					if ($lookForTrait !== null && !$traitFound) {
 						if (!$node instanceof Node\Stmt\Trait_) {
 							return self::SKIP_NODE;
@@ -296,9 +304,6 @@ function (Node $node) use ($fileName, $lookForTrait, &$traitFound, $traitMethodA
 						} elseif ((bool) $node->getAttribute('anonymousClass', false)) {
 							$className = $node->name->name;
 						} else {
-							if ($traitFound) {
-								return self::SKIP_NODE;
-							}
 							$className = ltrim(sprintf('%s\\%s', $namespace, $node->name->name), '\\');
 						}
 						$classStack[] = $className;

tests/PHPStan/Analyser/AnalyserIntegrationTest.php

@@ -513,6 +513,16 @@ public function testBug6253(): void
 		$this->assertNoErrors($errors);
 	}
 
+	public function testBug6442(): void
+	{
+		$errors = $this->runAnalyse(__DIR__ . '/data/bug-6442.php');
+		$this->assertCount(2, $errors);
+		$this->assertSame('Dumped type: \'Bug6442\\\A\'', $errors[0]->getMessage());
+		$this->assertSame(9, $errors[0]->getLine());
+		$this->assertSame('Dumped type: \'Bug6442\\\B\'', $errors[1]->getMessage());
+		$this->assertSame(9, $errors[1]->getLine());
+	}
+
 	/**
 	 * @param string[]|null $allAnalysedFiles
 	 * @return Error[]

tests/PHPStan/Analyser/data/bug-6442.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Bug6442;
+
+trait T
+{
+	public function x(): void
+	{
+		\PHPStan\dumpType(parent::class);
+	}
+}
+
+class A {}
+
+class B extends A
+{
+	use T;
+}
+
+new class() extends B
+{
+	use T;
+};
+

tests/PHPStan/Broker/BrokerTest.php

@@ -44,7 +44,7 @@ protected function setUp(): void
 			$setterReflectionProviderProvider,
 			$classReflectionExtensionRegistryProvider,
 			$this->createMock(FunctionReflectionFactory::class),
-			new FileTypeMapper($setterReflectionProviderProvider, $this->getParser(), $phpDocStringResolver, $phpDocNodeResolver, $this->createMock(Cache::class), $anonymousClassNameHelper, self::getContainer()->getByType(PhpVersion::class)),
+			new FileTypeMapper($setterReflectionProviderProvider, $this->getParser(), $phpDocStringResolver, $phpDocNodeResolver, $this->createMock(Cache::class), $anonymousClassNameHelper, self::getContainer()->getByType(PhpVersion::class), self::getContainer()->getByType(FileHelper::class)),
 			self::getContainer()->getByType(PhpDocInheritanceResolver::class),
 			self::getContainer()->getByType(PhpVersion::class),
 			self::getContainer()->getByType(NativeFunctionReflectionProvider::class),