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backend/vendor/symfony/config/Resource/FileExistenceResource.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\Config\Resource;
+
+/**
+ * FileExistenceResource represents a resource stored on the filesystem.
+ * Freshness is only evaluated against resource creation or deletion.
+ *
+ * The resource can be a file or a directory.
+ *
+ * @author Charles-Henri Bruyand <charleshenri.bruyand@gmail.com>
+ *
+ * @final
+ */
+class FileExistenceResource implements SelfCheckingResourceInterface
+{
+    private bool $exists;
+
+    /**
+     * @param string $resource The file path to the resource
+     */
+    public function __construct(
+        private string $resource,
+    ) {
+        $this->exists = file_exists($resource);
+    }
+
+    public function __toString(): string
+    {
+        return 'existence.'.$this->resource;
+    }
+
+    public function getResource(): string
+    {
+        return $this->resource;
+    }
+
+    public function isFresh(int $timestamp): bool
+    {
+        return file_exists($this->resource) === $this->exists;
+    }
+
+    public function __serialize(): array
+    {
+        return [
+            'resource' => $this->resource,
+            'exists' => $this->exists,
+        ];
+    }
+}