GraphQL\Validator\Rules\QueryComplexity::__invoke PHP Метод

    public function __invoke(ValidationContext $context)
    {
        $this->context = $context;
        $this->variableDefs = new \ArrayObject();
        $this->fieldNodeAndDefs = new \ArrayObject();
        $complexity = 0;
        return $this->invokeIfNeeded($context, [NodeKind::SELECTION_SET => function (SelectionSetNode $selectionSet) use($context) {
            $this->fieldNodeAndDefs = $this->collectFieldASTsAndDefs($context, $context->getParentType(), $selectionSet, null, $this->fieldNodeAndDefs);
        }, NodeKind::VARIABLE_DEFINITION => function ($def) {
            $this->variableDefs[] = $def;
            return Visitor::skipNode();
        }, NodeKind::OPERATION_DEFINITION => ['leave' => function (OperationDefinitionNode $operationDefinition) use($context, &$complexity) {
            $complexity = $this->fieldComplexity($operationDefinition, $complexity);
            if ($complexity > $this->getMaxQueryComplexity()) {
                $context->reportError(new Error($this->maxQueryComplexityErrorMessage($this->getMaxQueryComplexity(), $complexity)));
            }
        }]]);
    }