*/ final class ParamTypeResolver implements NodeTypeResolverInterface { /** * @var \Rector\NodeTypeResolver\NodeTypeResolver */ private $nodeTypeResolver; /** * @var \Rector\StaticTypeMapper\StaticTypeMapper */ private $staticTypeMapper; /** * @readonly * @var \Rector\PhpDocParser\NodeTraverser\SimpleCallableNodeTraverser */ private $simpleCallableNodeTraverser; /** * @readonly * @var \Rector\NodeNameResolver\NodeNameResolver */ private $nodeNameResolver; /** * @readonly * @var \Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory */ private $phpDocInfoFactory; /** * @readonly * @var \Rector\Core\PhpParser\Node\BetterNodeFinder */ private $betterNodeFinder; public function __construct(SimpleCallableNodeTraverser $simpleCallableNodeTraverser, NodeNameResolver $nodeNameResolver, PhpDocInfoFactory $phpDocInfoFactory, BetterNodeFinder $betterNodeFinder) { $this->simpleCallableNodeTraverser = $simpleCallableNodeTraverser; $this->nodeNameResolver = $nodeNameResolver; $this->phpDocInfoFactory = $phpDocInfoFactory; $this->betterNodeFinder = $betterNodeFinder; } /** * @required */ public function autowire(NodeTypeResolver $nodeTypeResolver, StaticTypeMapper $staticTypeMapper) : void { $this->nodeTypeResolver = $nodeTypeResolver; $this->staticTypeMapper = $staticTypeMapper; } /** * @return array> */ public function getNodeClasses() : array { return [Param::class]; } /** * @param Param $node */ public function resolve(Node $node) : Type { $paramType = $this->resolveFromParamType($node); if (!$paramType instanceof MixedType) { return $paramType; } $firstVariableUseType = $this->resolveFromFirstVariableUse($node); if (!$firstVariableUseType instanceof MixedType) { return $firstVariableUseType; } return $this->resolveFromFunctionDocBlock($node); } private function resolveFromParamType(Param $param) : Type { if ($param->type === null) { return new MixedType(); } if ($param->type instanceof Identifier) { return new MixedType(); } return $this->staticTypeMapper->mapPhpParserNodePHPStanType($param->type); } private function resolveFromFirstVariableUse(Param $param) : Type { $classMethod = $this->betterNodeFinder->findParentType($param, ClassMethod::class); if (!$classMethod instanceof ClassMethod) { return new MixedType(); } $paramName = $this->nodeNameResolver->getName($param); $paramStaticType = new MixedType(); // special case for param inside method/function $this->simpleCallableNodeTraverser->traverseNodesWithCallable((array) $classMethod->stmts, function (Node $node) use($paramName, &$paramStaticType) : ?int { if (!$node instanceof Variable) { return null; } if (!$this->nodeNameResolver->isName($node, $paramName)) { return null; } $paramStaticType = $this->nodeTypeResolver->getType($node); return NodeTraverser::STOP_TRAVERSAL; }); return $paramStaticType; } private function resolveFromFunctionDocBlock(Param $param) : Type { $phpDocInfo = $this->getFunctionLikePhpDocInfo($param); $paramName = $this->nodeNameResolver->getName($param); return $phpDocInfo->getParamType($paramName); } private function getFunctionLikePhpDocInfo(Param $param) : PhpDocInfo { $parentNode = $param->getAttribute(AttributeKey::PARENT_NODE); if (!$parentNode instanceof FunctionLike) { throw new ShouldNotHappenException(); } return $this->phpDocInfoFactory->createFromNodeOrEmpty($parentNode); } }