Your Name
50 lines
1.5 KiB
PHP
50 lines
1.5 KiB
PHP
<?php
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declare(strict_types=1);
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namespace GraphQL\Validator\Rules;
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use GraphQL\Error\Error;
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use GraphQL\Language\AST\FragmentDefinitionNode;
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use GraphQL\Language\AST\NameNode;
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use GraphQL\Language\AST\NodeKind;
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use GraphQL\Language\Visitor;
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use GraphQL\Language\VisitorOperation;
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use GraphQL\Validator\ValidationContext;
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use function sprintf;
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class UniqueFragmentNames extends ValidationRule
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{
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/** @var NameNode[] */
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public $knownFragmentNames;
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public function getVisitor(ValidationContext $context)
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{
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$this->knownFragmentNames = [];
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return [
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NodeKind::OPERATION_DEFINITION => static function () : VisitorOperation {
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return Visitor::skipNode();
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},
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NodeKind::FRAGMENT_DEFINITION => function (FragmentDefinitionNode $node) use ($context) : VisitorOperation {
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$fragmentName = $node->name->value;
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if (! isset($this->knownFragmentNames[$fragmentName])) {
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$this->knownFragmentNames[$fragmentName] = $node->name;
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} else {
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$context->reportError(new Error(
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self::duplicateFragmentNameMessage($fragmentName),
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[$this->knownFragmentNames[$fragmentName], $node->name]
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));
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}
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return Visitor::skipNode();
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},
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];
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}
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public static function duplicateFragmentNameMessage($fragName)
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{
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return sprintf('There can be only one fragment named "%s".', $fragName);
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}
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}
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