From 149d7cab1cc690f3b927c97f281b4d977038c09a Mon Sep 17 00:00:00 2001
From: Matthew Brown <github@muglug.com>
Date: Fri, 15 Feb 2019 18:33:29 -0500
Subject: [PATCH] Add PHP 7.0-compatible closure creation

---
 src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php b/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php
index e7d94bf71..0c32cf624 100644
--- a/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php
+++ b/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php
@@ -52,7 +52,11 @@ class FunctionReturnTypeProvider
      */
     public function register(string $class)
     {
-        $callable = \Closure::fromCallable([$class, 'get']);
+        if (version_compare(PHP_VERSION, '7.1.0') >= 0) {
+            $callable = \Closure::fromCallable([$class, 'get']);
+        } else {
+            $callable = (new \ReflectionClass($class))->getMethod('get')->getClosure(new $class);
+        }
 
         foreach ($class::getFunctionIds() as $function_id) {
             self::$handlers[$function_id] = $callable;