39 lines
1.3 KiB
PHP
39 lines
1.3 KiB
PHP
<?php
|
|
namespace GraphQL\Validator\Rules;
|
|
|
|
use GraphQL\Error\Error;
|
|
use GraphQL\Language\AST\DirectiveNode;
|
|
use GraphQL\Language\AST\Node;
|
|
use GraphQL\Validator\ValidationContext;
|
|
|
|
class UniqueDirectivesPerLocation extends AbstractValidationRule
|
|
{
|
|
static function duplicateDirectiveMessage($directiveName)
|
|
{
|
|
return 'The directive "'.$directiveName.'" can only be used once at this location.';
|
|
}
|
|
|
|
public function getVisitor(ValidationContext $context)
|
|
{
|
|
return [
|
|
'enter' => function(Node $node) use ($context) {
|
|
if (isset($node->directives)) {
|
|
$knownDirectives = [];
|
|
foreach ($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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
];
|
|
}
|
|
}
|