Parse and render anonymous classes correctly on php 8

Author: derrabus

Application.php

@@ -863,17 +863,16 @@ private function doActuallyRenderThrowable(\Throwable $e, OutputInterface $outpu
         do {
             $message = trim($e->getMessage());
             if ('' === $message || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
-                $class = \get_class($e);
-                $class = 'c' === $class[0] && 0 === strpos($class, "class@anonymous\0") ? get_parent_class($class).'@anonymous' : $class;
+                $class = get_debug_type($e);
                 $title = sprintf('  [%s%s]  ', $class, 0 !== ($code = $e->getCode()) ? ' ('.$code.')' : '');
                 $len = Helper::strlen($title);
             } else {
                 $len = 0;
             }
 
-            if (false !== strpos($message, "class@anonymous\0")) {
-                $message = preg_replace_callback('/class@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', function ($m) {
-                    return class_exists($m[0], false) ? get_parent_class($m[0]).'@anonymous' : $m[0];
+            if (false !== strpos($message, "@anonymous\0")) {
+                $message = preg_replace_callback('/[a-zA-Z_\x7f-\xff][\\\\a-zA-Z0-9_\x7f-\xff]*+@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', function ($m) {
+                    return class_exists($m[0], false) ? (get_parent_class($m[0]) ?: key(class_implements($m[0])) ?: 'class').'@anonymous' : $m[0];
                 }, $message);
             }
 

Tests/ApplicationTest.php

@@ -897,7 +897,8 @@ public function testRenderAnonymousException()
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new class('') extends \InvalidArgumentException { };
+            throw new class('') extends \InvalidArgumentException {
+            };
         });
         $tester = new ApplicationTester($application);
 
@@ -907,20 +908,22 @@ public function testRenderAnonymousException()
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', \get_class(new class() { })));
+            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', \get_class(new class() {
+            })));
         });
         $tester = new ApplicationTester($application);
 
         $tester->run(['command' => 'foo'], ['decorated' => false]);
-        $this->assertStringContainsString('Dummy type "@anonymous" is invalid.', $tester->getDisplay(true));
+        $this->assertStringContainsString('Dummy type "class@anonymous" is invalid.', $tester->getDisplay(true));
     }
 
     public function testRenderExceptionStackTraceContainsRootException()
     {
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new class('') extends \InvalidArgumentException { };
+            throw new class('') extends \InvalidArgumentException {
+            };
         });
         $tester = new ApplicationTester($application);
 
@@ -930,12 +933,13 @@ public function testRenderExceptionStackTraceContainsRootException()
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', \get_class(new class() { })));
+            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', \get_class(new class() {
+            })));
         });
         $tester = new ApplicationTester($application);
 
         $tester->run(['command' => 'foo'], ['decorated' => false]);
-        $this->assertStringContainsString('Dummy type "@anonymous" is invalid.', $tester->getDisplay(true));
+        $this->assertStringContainsString('Dummy type "class@anonymous" is invalid.', $tester->getDisplay(true));
     }
 
     public function testRun()

composer.json

@@ -19,6 +19,7 @@
         "php": ">=7.1.3",
         "symfony/polyfill-mbstring": "~1.0",
         "symfony/polyfill-php73": "^1.8",
+        "symfony/polyfill-php80": "^1.15",
         "symfony/service-contracts": "^1.1|^2"
     },
     "require-dev": {