JezK
Edit File: LoneSchemaDefinition.php
<?php declare(strict_types=1); namespace Automattic\WooCommerce\Vendor\GraphQL\Validator\Rules; use Automattic\WooCommerce\Vendor\GraphQL\Error\Error; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\NodeKind; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\SchemaDefinitionNode; use Automattic\WooCommerce\Vendor\GraphQL\Validator\SDLValidationContext; /** * Lone schema definition. * * A Automattic\WooCommerce\Vendor\GraphQL document is only valid if it contains only one schema definition. */ class LoneSchemaDefinition extends ValidationRule { public static function schemaDefinitionNotAloneMessage(): string { return 'Must provide only one schema definition.'; } public static function canNotDefineSchemaWithinExtensionMessage(): string { return 'Cannot define a new schema within a schema extension.'; } public function getSDLVisitor(SDLValidationContext $context): array { $oldSchema = $context->getSchema(); $alreadyDefined = $oldSchema === null ? false : ( $oldSchema->astNode !== null || $oldSchema->getQueryType() !== null || $oldSchema->getMutationType() !== null || $oldSchema->getSubscriptionType() !== null ); $schemaDefinitionsCount = 0; return [ NodeKind::SCHEMA_DEFINITION => static function (SchemaDefinitionNode $node) use ($alreadyDefined, $context, &$schemaDefinitionsCount): void { if ($alreadyDefined) { $context->reportError(new Error(static::canNotDefineSchemaWithinExtensionMessage(), $node)); return; } if ($schemaDefinitionsCount > 0) { $context->reportError(new Error(static::schemaDefinitionNotAloneMessage(), $node)); } ++$schemaDefinitionsCount; }, ]; } }