46 lines
1.3 KiB
PHP
46 lines
1.3 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\ArgumentNode;
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use GraphQL\Language\AST\Node;
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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 UniqueArgumentNames extends AbstractValidationRule
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{
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static function duplicateArgMessage($argName)
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{
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return "There can be only one argument named \"$argName\".";
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}
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public $knownArgNames;
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public function getVisitor(ValidationContext $context)
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{
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$this->knownArgNames = [];
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return [
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NodeKind::FIELD => function () {
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$this->knownArgNames = [];;
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},
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NodeKind::DIRECTIVE => function () {
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$this->knownArgNames = [];
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},
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NodeKind::ARGUMENT => function (ArgumentNode $node) use ($context) {
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$argName = $node->name->value;
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if (!empty($this->knownArgNames[$argName])) {
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$context->reportError(new Error(
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self::duplicateArgMessage($argName),
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[$this->knownArgNames[$argName], $node->name]
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));
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} else {
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$this->knownArgNames[$argName] = $node->name;
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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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}
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