Vendor

2021-06-01 19:56:34 +02:00
parent e74df463f2
commit 499abe195e
284 changed files with 55166 additions and 0 deletions
@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+namespace GraphQL\Validator\Rules;
+
+use GraphQL\Error\Error;
+use GraphQL\Language\AST\NodeKind;
+use GraphQL\Language\AST\OperationDefinitionNode;
+use GraphQL\Language\AST\VariableDefinitionNode;
+use GraphQL\Validator\ValidationContext;
+use function sprintf;
+
+class NoUnusedVariables extends ValidationRule
+{
+    /** @var VariableDefinitionNode[] */
+    public $variableDefs;
+
+    public function getVisitor(ValidationContext $context)
+    {
+        $this->variableDefs = [];
+
+        return [
+            NodeKind::OPERATION_DEFINITION => [
+                'enter' => function () {
+                    $this->variableDefs = [];
+                },
+                'leave' => function (OperationDefinitionNode $operation) use ($context) {
+                    $variableNameUsed = [];
+                    $usages           = $context->getRecursiveVariableUsages($operation);
+                    $opName           = $operation->name ? $operation->name->value : null;
+
+                    foreach ($usages as $usage) {
+                        $node                                 = $usage['node'];
+                        $variableNameUsed[$node->name->value] = true;
+                    }
+
+                    foreach ($this->variableDefs as $variableDef) {
+                        $variableName = $variableDef->variable->name->value;
+
+                        if (! empty($variableNameUsed[$variableName])) {
+                            continue;
+                        }
+
+                        $context->reportError(new Error(
+                            self::unusedVariableMessage($variableName, $opName),
+                            [$variableDef]
+                        ));
+                    }
+                },
+            ],
+            NodeKind::VARIABLE_DEFINITION  => function ($def) {
+                $this->variableDefs[] = $def;
+            },
+        ];
+    }
+
+    public static function unusedVariableMessage($varName, $opName = null)
+    {
+        return $opName
+            ? sprintf('Variable "$%s" is never used in operation "%s".', $varName, $opName)
+            : sprintf('Variable "$%s" is never used.', $varName);
+    }
+}