[Config] Reduce the size of serialized resource checkers

Author: nicolas-grekas

src/Symfony/Component/Config/Resource/ClassExistenceResource.php

@@ -101,9 +101,6 @@ public function isFresh(int $timestamp): bool
         return $this->exists[0] xor !$exists[0];
     }
 
-    /**
-     * @internal
-     */
     public function __serialize(): array
     {
         if (null === $this->exists) {
@@ -116,9 +113,6 @@ public function __serialize(): array
         ];
     }
 
-    /**
-     * @internal
-     */
     public function __unserialize(array $data): void
     {
         $this->resource = array_shift($data);

src/Symfony/Component/Config/Resource/ComposerResource.php

@@ -47,6 +47,13 @@ public function isFresh(int $timestamp): bool
         return array_values(self::$runtimeVendors) === array_values($this->vendors);
     }
 
+    public function __serialize(): array
+    {
+        return [
+            'vendors' => $this->vendors,
+        ];
+    }
+
     private static function refresh(): void
     {
         self::$runtimeVendors = [];

src/Symfony/Component/Config/Resource/DirectoryResource.php

@@ -93,4 +93,12 @@ public function isFresh(int $timestamp): bool
 
         return true;
     }
+
+    public function __serialize(): array
+    {
+        return [
+            'resource' => $this->resource,
+            'pattern' => $this->pattern,
+        ];
+    }
 }

src/Symfony/Component/Config/Resource/FileExistenceResource.php

@@ -48,4 +48,12 @@ public function isFresh(int $timestamp): bool
     {
         return file_exists($this->resource) === $this->exists;
     }
+
+    public function __serialize(): array
+    {
+        return [
+            'resource' => $this->resource,
+            'exists' => $this->exists,
+        ];
+    }
 }

src/Symfony/Component/Config/Resource/FileResource.php

@@ -57,4 +57,11 @@ public function isFresh(int $timestamp): bool
     {
         return false !== ($filemtime = @filemtime($this->resource)) && $filemtime <= $timestamp;
     }
+
+    public function __serialize(): array
+    {
+        return [
+            'resource' => $this->resource,
+        ];
+    }
 }

src/Symfony/Component/Config/Resource/GlobResource.php

@@ -76,9 +76,6 @@ public function isFresh(int $timestamp): bool
         return $this->hash === $hash;
     }
 
-    /**
-     * @internal
-     */
     public function __serialize(): array
     {
         $this->hash ??= $this->computeHash();
@@ -93,9 +90,6 @@ public function __serialize(): array
         ];
     }
 
-    /**
-     * @internal
-     */
     public function __unserialize(array $data): void
     {
         $this->prefix = array_shift($data);

src/Symfony/Component/Config/Resource/ReflectionClassResource.php

@@ -59,9 +59,6 @@ public function __toString(): string
         return 'reflection.'.$this->className;
     }
 
-    /**
-     * @internal
-     */
     public function __serialize(): array
     {
         if (!isset($this->hash)) {

src/Symfony/Component/Config/Resource/SkippingResourceChecker.php

@@ -34,4 +34,11 @@ public function isFresh(ResourceInterface $resource, int $timestamp): bool
     {
         return true;
     }
+
+    public function __serialize(): array
+    {
+        return [
+            'skippedResourceTypes' => $this->skippedResourceTypes,
+        ];
+    }
 }