Version 4.5.0

system/3rd_party/graphql-php/Validator/Rules/ScalarLeafs.php

@@ -0,0 +1,45 @@
+<?php
+namespace GraphQL\Validator\Rules;
+
+use GraphQL\Error\Error;
+use GraphQL\Language\AST\FieldNode;
+use GraphQL\Language\AST\NodeKind;
+use GraphQL\Type\Definition\Type;
+use GraphQL\Validator\ValidationContext;
+
+class ScalarLeafs extends AbstractValidationRule
+{
+    static function noSubselectionAllowedMessage($field, $type)
+    {
+        return "Field \"$field\" of type \"$type\" must not have a sub selection.";
+    }
+
+    static function requiredSubselectionMessage($field, $type)
+    {
+        return "Field \"$field\" of type \"$type\" must have a sub selection.";
+    }
+
+    public function getVisitor(ValidationContext $context)
+    {
+        return [
+            NodeKind::FIELD => function(FieldNode $node) use ($context) {
+                $type = $context->getType();
+                if ($type) {
+                    if (Type::isLeafType(Type::getNamedType($type))) {
+                        if ($node->selectionSet) {
+                            $context->reportError(new Error(
+                                self::noSubselectionAllowedMessage($node->name->value, $type),
+                                [$node->selectionSet]
+                            ));
+                        }
+                    } else if (!$node->selectionSet) {
+                        $context->reportError(new Error(
+                            self::requiredSubselectionMessage($node->name->value, $type),
+                            [$node]
+                        ));
+                    }
+                }
+            }
+        ];
+    }
+}