Automattic\WooCommerce\Vendor\GraphQL\Validator\Rules

UniqueDirectiveNames{} │ WC 1.0└─ ValidationRule

Unique directive names.

A Automattic\WooCommerce\Vendor\GraphQL document is only valid if all defined directives have unique names.

No Hooks.

Usage

$UniqueDirectiveNames = new UniqueDirectiveNames();
// use class methods

Methods

1. public getSDLVisitor(SDLValidationContext $context)

UniqueDirectiveNames{} UniqueDirectiveNames{} code ^{WC 10.9.1}

class UniqueDirectiveNames extends ValidationRule
{
    public function getSDLVisitor(SDLValidationContext $context): array
    {
        $schema = $context->getSchema();

        /** @var array<string, NameNode> $knownDirectiveNames */
        $knownDirectiveNames = [];

        return [
            NodeKind::DIRECTIVE_DEFINITION => static function ($node) use ($context, $schema, &$knownDirectiveNames): ?VisitorOperation {
                $directiveName = $node->name->value;

                if ($schema !== null && $schema->getDirective($directiveName) !== null) {
                    $context->reportError(
                        new Error(
                            'Directive "@' . $directiveName . '" already exists in the schema. It cannot be redefined.',
                            $node->name,
                        ),
                    );

                    return null;
                }

                if (isset($knownDirectiveNames[$directiveName])) {
                    $context->reportError(
                        new Error(
                            'There can be only one directive named "@' . $directiveName . '".',
                            [
                                $knownDirectiveNames[$directiveName],
                                $node->name,
                            ]
                        ),
                    );
                } else {
                    $knownDirectiveNames[$directiveName] = $node->name;
                }

                return Visitor::skipNode();
            },
        ];
    }
}