UniqueVariableNames.php
| 1 | <?php declare(strict_types=1); |
| 2 | |
| 3 | namespace Automattic\WooCommerce\Vendor\GraphQL\Validator\Rules; |
| 4 | |
| 5 | use Automattic\WooCommerce\Vendor\GraphQL\Error\Error; |
| 6 | use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\NameNode; |
| 7 | use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\NodeKind; |
| 8 | use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\VariableDefinitionNode; |
| 9 | use Automattic\WooCommerce\Vendor\GraphQL\Validator\QueryValidationContext; |
| 10 | |
| 11 | class UniqueVariableNames extends ValidationRule |
| 12 | { |
| 13 | /** @var array<string, NameNode> */ |
| 14 | protected array $knownVariableNames; |
| 15 | |
| 16 | public function getVisitor(QueryValidationContext $context): array |
| 17 | { |
| 18 | $this->knownVariableNames = []; |
| 19 | |
| 20 | return [ |
| 21 | NodeKind::OPERATION_DEFINITION => function (): void { |
| 22 | $this->knownVariableNames = []; |
| 23 | }, |
| 24 | NodeKind::VARIABLE_DEFINITION => function (VariableDefinitionNode $node) use ($context): void { |
| 25 | $variableName = $node->variable->name->value; |
| 26 | if (! isset($this->knownVariableNames[$variableName])) { |
| 27 | $this->knownVariableNames[$variableName] = $node->variable->name; |
| 28 | } else { |
| 29 | $context->reportError(new Error( |
| 30 | static::duplicateVariableMessage($variableName), |
| 31 | [$this->knownVariableNames[$variableName], $node->variable->name] |
| 32 | )); |
| 33 | } |
| 34 | }, |
| 35 | ]; |
| 36 | } |
| 37 | |
| 38 | public static function duplicateVariableMessage(string $variableName): string |
| 39 | { |
| 40 | return "There can be only one variable named \"{$variableName}\"."; |
| 41 | } |
| 42 | } |
| 43 |