Merge pull request #808 from frankbv/0.13-php8

Fix 0.13 calling preg_replace_callback with a NULL argument in PHP 8

Author: murtukov

lib/generator/src/ClassUtils.php

@@ -29,6 +29,10 @@ public static function shortenClassName($definition)
 
     public static function shortenClassFromCode($code, callable $callback = null)
     {
+        if (null === $code) {
+            return '';
+        }
+
         if (null === $callback) {
             $callback = function ($matches) {
                 return static::shortenClassName($matches[1]);

lib/generator/tests/ClassUtilsTest.php

@@ -33,6 +33,7 @@ public function shortenClassFromCodeDataProvider(): iterable
         return [
             ['$toto, \Toto\Tata $test', '$toto, Tata $test'],
             ['\Tata $test', 'Tata $test'],
+            [null, ''],
         ];
     }
 }