for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
declare(strict_types=1);
namespace GraphQL\Validator\Rules;
use GraphQL\Error\Error;
use GraphQL\Language\AST\DirectiveNode;
use GraphQL\Language\AST\Node;
use GraphQL\Validator\ASTValidationContext;
use GraphQL\Validator\SDLValidationContext;
use GraphQL\Validator\ValidationContext;
use function sprintf;
class UniqueDirectivesPerLocation extends ValidationRule
{
public function getVisitor(ValidationContext $context)
return $this->getASTVisitor($context);
}
public function getSDLVisitor(SDLValidationContext $context)
public function getASTVisitor(ASTValidationContext $context)
return [
'enter' => static function (Node $node) use ($context) {
if (! isset($node->directives)) {
return;
$knownDirectives = [];
foreach ($node->directives as $directive) {
/** @var DirectiveNode $directive */
$directiveName = $directive->name->value;
if (isset($knownDirectives[$directiveName])) {
$context->reportError(new Error(
self::duplicateDirectiveMessage($directiveName),
[$knownDirectives[$directiveName], $directive]
));
} else {
$knownDirectives[$directiveName] = $directive;
},
];
public static function duplicateDirectiveMessage($directiveName)
return sprintf('The directive "%s" can only be used once at this location.', $directiveName);
webonyx /
graphql-php
