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vendor/symfony/var-dumper/Cloner/Stub.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\VarDumper\Cloner;
+
+use Symfony\Component\VarDumper\Cloner\Internal\NoDefault;
+
+/**
+ * Represents the main properties of a PHP variable.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class Stub
+{
+    public const TYPE_REF = 1;
+    public const TYPE_STRING = 2;
+    public const TYPE_ARRAY = 3;
+    public const TYPE_OBJECT = 4;
+    public const TYPE_RESOURCE = 5;
+    public const TYPE_SCALAR = 6;
+
+    public const STRING_BINARY = 1;
+    public const STRING_UTF8 = 2;
+
+    public const ARRAY_ASSOC = 1;
+    public const ARRAY_INDEXED = 2;
+
+    public $type = self::TYPE_REF;
+    public $class = '';
+    public $value;
+    public $cut = 0;
+    public $handle = 0;
+    public $refCount = 0;
+    public $position = 0;
+    public $attr = [];
+
+    private static array $defaultProperties = [];
+
+    /**
+     * @internal
+     */
+    public function __sleep(): array
+    {
+        $properties = [];
+
+        if (!isset(self::$defaultProperties[$c = static::class])) {
+            $reflection = new \ReflectionClass($c);
+            self::$defaultProperties[$c] = [];
+
+            foreach ($reflection->getProperties() as $p) {
+                if ($p->isStatic()) {
+                    continue;
+                }
+
+                self::$defaultProperties[$c][$p->name] = $p->hasDefaultValue() ? $p->getDefaultValue() : ($p->hasType() ? NoDefault::NoDefault : null);
+            }
+        }
+
+        foreach (self::$defaultProperties[$c] as $k => $v) {
+            if (NoDefault::NoDefault === $v || $this->$k !== $v) {
+                $properties[] = $k;
+            }
+        }
+
+        return $properties;
+    }
+}