[VarDumper] Add support for Fiber

CHANGELOG.md

@@ -6,6 +6,7 @@ CHANGELOG
 
  * Add ability to style integer and double values independently
  * Add casters for Symfony's UUIDs and ULIDs
+ * Add support for `Fiber`
 
 5.2.0
 -----

Caster/FiberCaster.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\VarDumper\Caster;
+
+use Symfony\Component\VarDumper\Cloner\Stub;
+
+/**
+ * Casts Fiber related classes to array representation.
+ *
+ * @author Grégoire Pineau <[email protected]>
+ */
+final class FiberCaster
+{
+    public static function castFiber(\Fiber $fiber, array $a, Stub $stub, bool $isNested, int $filter = 0)
+    {
+        $prefix = Caster::PREFIX_VIRTUAL;
+
+        if ($fiber->isTerminated()) {
+            $status = 'terminated';
+        } elseif ($fiber->isRunning()) {
+            $status = 'running';
+        } elseif ($fiber->isSuspended()) {
+            $status = 'suspended';
+        } elseif ($fiber->isStarted()) {
+            $status = 'started';
+        } else {
+            $status = 'not started';
+        }
+
+        $a[$prefix.'status'] = $status;
+
+        return $a;
+    }
+}

Cloner/AbstractCloner.php

@@ -29,6 +29,8 @@ abstract class AbstractCloner implements ClonerInterface
         'Symfony\Component\VarDumper\Caster\ConstStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'],
         'Symfony\Component\VarDumper\Caster\EnumStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'],
 
+        'Fiber' => ['Symfony\Component\VarDumper\Caster\FiberCaster', 'castFiber'],
+
         'Closure' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'],
         'Generator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'],
         'ReflectionType' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'],