nodeNameResolver = $nodeNameResolver; $this->simpleCallableNodeTraverser = $simpleCallableNodeTraverser; $this->betterNodeFinder = $betterNodeFinder; } public function isLegal(Param $param, ClassMethod $classMethod) : bool { $paramName = $this->nodeNameResolver->getName($param->var); if ($paramName === null) { return \false; } $isLegal = \true; $this->simpleCallableNodeTraverser->traverseNodesWithCallable((array) $classMethod->stmts, function (Node $subNode) use(&$isLegal, $paramName) : ?int { if ($subNode instanceof Assign && $subNode->var instanceof Variable && $this->nodeNameResolver->isName($subNode->var, $paramName)) { $isLegal = \false; return NodeTraverser::STOP_TRAVERSAL; } if ($subNode instanceof If_ && (bool) $this->betterNodeFinder->findFirst($subNode->cond, function (Node $node) use($paramName) : bool { return $node instanceof Variable && $this->nodeNameResolver->isName($node, $paramName); })) { $isLegal = \false; return NodeTraverser::STOP_TRAVERSAL; } if ($subNode instanceof Ternary && (bool) $this->betterNodeFinder->findFirst($subNode, function (Node $node) use($paramName) : bool { return $node instanceof Variable && $this->nodeNameResolver->isName($node, $paramName); })) { $isLegal = \false; return NodeTraverser::STOP_TRAVERSAL; } return null; }); return $isLegal; } }