[Php70] Handle crash on First class callable on ThisCallOnStaticMetho…

…dToStaticCallRector (#3003)

rules-tests/Php70/Rector/MethodCall/ThisCallOnStaticMethodToStaticCallRector/Fixture/skip_first_class_callable.php.inc

@@ -0,0 +1,24 @@
+<?php
+
+namespace Rector\Tests\Php70\Rector\MethodCall\ThisCallOnStaticMethodToStaticCallRector\Fixture;
+
+final class SkipFirstClassCallable
+{
+    public function getFunctions(): array
+    {
+        return [
+            new TwigFunction('top_level_domain', $this->topLevelDomain(...)),
+        ];
+    }
+
+    public static function topLevelDomain(?string $host = null): string
+    {
+        if (null === $host) {
+            $host = $_SERVER['HTTP_HOST'];
+        }
+
+        $urlPieces = explode('.', (string) $host);
+
+        return end($urlPieces);
+    }
+}

rules/Php70/Rector/MethodCall/ThisCallOnStaticMethodToStaticCallRector.php

@@ -125,6 +125,10 @@ public function refactor(Node $node): ?Node
             return null;
         }
 
+        if ($node->isFirstClassCallable()) {
+            return null;
+        }
+
         $objectReference = $this->resolveClassSelf($node);
         return $this->nodeFactory->createStaticCall($objectReference, $methodName, $node->args);
     }