bug #36914 Parse and render anonymous classes correctly on php 8 (derrabus)

This PR was merged into the 4.4 branch.

Discussion
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Parse and render anonymous classes correctly on php 8

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | #36872
| License       | MIT
| Doc PR        | N/A

The format of the value that `get_class()` returns for anonymous classes has changed in php 8. This PR attempts to detect both formats, with the help of the PHP80 polyfill where possible.

Commits
-------

9d702fd94b Parse and render anonymous classes correctly on php 8

Author: nicolas-grekas

Kernel.php

@@ -228,10 +228,7 @@ public function getBundles()
     public function getBundle($name)
     {
         if (!isset($this->bundles[$name])) {
-            $class = static::class;
-            $class = 'c' === $class[0] && 0 === strpos($class, "class@anonymous\0") ? get_parent_class($class).'@anonymous' : $class;
-
-            throw new \InvalidArgumentException(sprintf('Bundle "%s" does not exist or it is not enabled. Maybe you forgot to add it in the "registerBundles()" method of your "%s.php" file?', $name, $class));
+            throw new \InvalidArgumentException(sprintf('Bundle "%s" does not exist or it is not enabled. Maybe you forgot to add it in the "registerBundles()" method of your "%s.php" file?', $name, get_debug_type($this)));
         }
 
         return $this->bundles[$name];
@@ -474,7 +471,7 @@ protected function build(ContainerBuilder $container)
     protected function getContainerClass()
     {
         $class = static::class;
-        $class = 'c' === $class[0] && 0 === strpos($class, "class@anonymous\0") ? get_parent_class($class).str_replace('.', '_', ContainerBuilder::hash($class)) : $class;
+        $class = false !== strpos($class, "@anonymous\0") ? get_parent_class($class).str_replace('.', '_', ContainerBuilder::hash($class)) : $class;
         $class = $this->name.str_replace('\\', '_', $class).ucfirst($this->environment).($this->debug ? 'Debug' : '').'Container';
 
         if (!preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/', $class)) {

Tests/KernelTest.php

@@ -640,6 +640,27 @@ public function testKernelStartTimeIsResetWhileBootingAlreadyBootedKernel()
         $this->assertGreaterThan($preReBoot, $kernel->getStartTime());
     }
 
+    public function testAnonymousKernelGeneratesValidContainerClass(): void
+    {
+        $kernel = new class('test', true) extends Kernel {
+            public function registerBundles(): iterable
+            {
+                return [];
+            }
+
+            public function registerContainerConfiguration(LoaderInterface $loader): void
+            {
+            }
+
+            public function getContainerClass(): string
+            {
+                return parent::getContainerClass();
+            }
+        };
+
+        $this->assertRegExp('/^[a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*TestDebugContainer$/', $kernel->getContainerClass());
+    }
+
     /**
      * Returns a mock for the BundleInterface.
      */

composer.json

@@ -22,6 +22,7 @@
         "symfony/http-foundation": "^4.4|^5.0",
         "symfony/polyfill-ctype": "^1.8",
         "symfony/polyfill-php73": "^1.9",
+        "symfony/polyfill-php80": "^1.15",
         "psr/log": "~1.0"
     },
     "require-dev": {