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plugins/simplesaml/lib/vendor/symfony/cache/Traits/ValueWrapper.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.
+ */
+
+/**
+ * A short namespace-less class to serialize items with metadata.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class <EFBFBD>
+{
+    private const EXPIRY_OFFSET = 1648206727;
+    private const INT32_MAX = 2147483647;
+
+    public readonly mixed $value;
+    public readonly array $metadata;
+
+    public function __construct(mixed $value, array $metadata)
+    {
+        $this->value = $value;
+        $this->metadata = $metadata;
+    }
+
+    public function __serialize(): array
+    {
+        // pack 31-bits ctime into 14bits
+        $c = $this->metadata['ctime'] ?? 0;
+        $c = match (true) {
+            $c > self::INT32_MAX - 2 => self::INT32_MAX,
+            $c > 0 => 1 + $c,
+            default => 1,
+        };
+        $e = 0;
+        while (!(0x40000000 & $c)) {
+            $c <<= 1;
+            ++$e;
+        }
+        $c = (0x7FE0 & ($c >> 16)) | $e;
+
+        $pack = pack('Vn', (int) (0.1 + ($this->metadata['expiry'] ?: self::INT32_MAX + self::EXPIRY_OFFSET) - self::EXPIRY_OFFSET), $c);
+
+        if (isset($this->metadata['tags'])) {
+            $pack[4] = $pack[4] | "\x80";
+        }
+
+        return [$pack => $this->value] + ($this->metadata['tags'] ?? []);
+    }
+
+    public function __unserialize(array $data): void
+    {
+        $pack = array_key_first($data);
+        $this->value = $data[$pack];
+
+        if ($hasTags = "\x80" === ($pack[4] & "\x80")) {
+            unset($data[$pack]);
+            $pack[4] = $pack[4] & "\x7F";
+        }
+
+        $metadata = unpack('Vexpiry/nctime', $pack);
+        $metadata['expiry'] += self::EXPIRY_OFFSET;
+
+        if (!$metadata['ctime'] = ((0x4000 | $metadata['ctime']) << 16 >> (0x1F & $metadata['ctime'])) - 1) {
+            unset($metadata['ctime']);
+        }
+
+        if ($hasTags) {
+            $metadata['tags'] = $data;
+        }
+
+        $this->metadata = $metadata;
+    }
+}