59 lines
1.9 KiB
PHP
59 lines
1.9 KiB
PHP
<?php
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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\NodeKind;
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use GraphQL\Language\Visitor;
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use GraphQL\Validator\ValidationContext;
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class NoUnusedFragments extends AbstractValidationRule
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{
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static function unusedFragMessage($fragName)
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{
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return "Fragment \"$fragName\" is never used.";
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}
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public $operationDefs;
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public $fragmentDefs;
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public function getVisitor(ValidationContext $context)
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{
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$this->operationDefs = [];
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$this->fragmentDefs = [];
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return [
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NodeKind::OPERATION_DEFINITION => function($node) {
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$this->operationDefs[] = $node;
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return Visitor::skipNode();
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},
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NodeKind::FRAGMENT_DEFINITION => function(FragmentDefinitionNode $def) {
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$this->fragmentDefs[] = $def;
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return Visitor::skipNode();
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},
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NodeKind::DOCUMENT => [
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'leave' => function() use ($context) {
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$fragmentNameUsed = [];
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foreach ($this->operationDefs as $operation) {
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foreach ($context->getRecursivelyReferencedFragments($operation) as $fragment) {
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$fragmentNameUsed[$fragment->name->value] = true;
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}
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}
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foreach ($this->fragmentDefs as $fragmentDef) {
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$fragName = $fragmentDef->name->value;
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if (empty($fragmentNameUsed[$fragName])) {
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$context->reportError(new Error(
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self::unusedFragMessage($fragName),
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[ $fragmentDef ]
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));
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}
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}
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}
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]
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];
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}
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}
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