From 291a7d6521264895fde772988ed6162e2b5c1701 Mon Sep 17 00:00:00 2001
From: Pekka Laiho <pekka.i.laiho@gmail.com>
Date: Thu, 4 Jun 2020 18:27:47 +0700
Subject: [PATCH] handle no input

---
 src/Reader.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Reader.php b/src/Reader.php
index 5f27410..663359a 100644
--- a/src/Reader.php
+++ b/src/Reader.php
@@ -5,6 +5,10 @@ class Reader
 {
     public function read(array $tokens)
     {
+        if (empty($tokens)) {
+            return null;
+        }
+
         $index = 0;
         return $this->readForm($tokens, $index);
     }