From dc0616edafdd9aa0b309f11ceef73c9c2edefc49 Mon Sep 17 00:00:00 2001
From: Adrian Philipp <adrian@ticketswap.com>
Date: Thu, 12 Apr 2018 17:36:24 +0200
Subject: [PATCH] Return early if rules are empty to avoid visiting elements

This is tested already in testPassesValidationWithEmptyRules
---
 src/Validator/DocumentValidator.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Validator/DocumentValidator.php b/src/Validator/DocumentValidator.php
index 31b7649..0f85770 100644
--- a/src/Validator/DocumentValidator.php
+++ b/src/Validator/DocumentValidator.php
@@ -96,6 +96,12 @@ class DocumentValidator
         if (null === $rules) {
             $rules = static::allRules();
         }
+
+        if (true === is_array($rules) && 0 === count($rules)) {
+            // Skip validation if there are no rules
+            return [];
+        }
+
         $typeInfo = $typeInfo ?: new TypeInfo($schema);
         $errors = static::visitUsingRules($schema, $typeInfo, $ast, $rules);
         return $errors;