Digia\GraphQL\Validation\Rule\SingleFieldSubscriptionsRule::enterNode()

Complexity

Conditions	5
Paths	4

Size

Total Lines	18
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function enterNode(NodeInterface $node): ?NodeInterface
    {
        if ($node instanceof OperationDefinitionNode && $node->getOperation() === 'subscription') {
            $selectionSet = $node->getSelectionSet();
            if (null !== $selectionSet) {
                $selections = $selectionSet->getSelections();
                if (\count($selections) !== 1) {
                    $this->validationContext->reportError(
                        new ValidationException(
                            singleFieldOnlyMessage((string)$node),
                            \array_slice($selections, 1)
                        )
                    );
                }
            }
        }

        return $node;
    }