1 files changed, 128 insertions, 0 deletions
diff --git a/laravel/serializable-closure/src/SerializableClosure.php b/laravel/serializable-closure/src/SerializableClosure.php
new file mode 100644
index 00000000..e7f9f0cf
--- /dev/null
+++ b/laravel/serializable-closure/src/SerializableClosure.php
@@ -0,0 +1,128 @@
+<?php
+
+namespace Laravel\SerializableClosure;
+
+use Closure;
+use Laravel\SerializableClosure\Exceptions\InvalidSignatureException;
+use Laravel\SerializableClosure\Exceptions\PhpVersionNotSupportedException;
+use Laravel\SerializableClosure\Serializers\Signed;
+use Laravel\SerializableClosure\Signers\Hmac;
+
+class SerializableClosure
+{
+    /**
+     * The closure's serializable.
+     *
+     * @var \Laravel\SerializableClosure\Contracts\Serializable
+     */
+    protected $serializable;
+
+    /**
+     * Creates a new serializable closure instance.
+     *
+     * @param  \Closure  $closure
+     * @return void
+     */
+    public function __construct(Closure $closure)
+    {
+        if (\PHP_VERSION_ID < 70400) {
+            throw new PhpVersionNotSupportedException();
+        }
+
+        $this->serializable = Serializers\Signed::$signer
+            ? new Serializers\Signed($closure)
+            : new Serializers\Native($closure);
+    }
+
+    /**
+     * Resolve the closure with the given arguments.
+     *
+     * @return mixed
+     */
+    public function __invoke()
+    {
+        if (\PHP_VERSION_ID < 70400) {
+            throw new PhpVersionNotSupportedException();
+        }
+
+        return call_user_func_array($this->serializable, func_get_args());
+    }
+
+    /**
+     * Gets the closure.
+     *
+     * @return \Closure
+     */
+    public function getClosure()
+    {
+        if (\PHP_VERSION_ID < 70400) {
+            throw new PhpVersionNotSupportedException();
+        }
+
+        return $this->serializable->getClosure();
+    }
+
+    /**
+     * Sets the serializable closure secret key.
+     *
+     * @param  string|null  $secret
+     * @return void
+     */
+    public static function setSecretKey($secret)
+    {
+        Serializers\Signed::$signer = $secret
+            ? new Hmac($secret)
+            : null;
+    }
+
+    /**
+     * Sets the serializable closure secret key.
+     *
+     * @param  \Closure|null  $transformer
+     * @return void
+     */
+    public static function transformUseVariablesUsing($transformer)
+    {
+        Serializers\Native::$transformUseVariables = $transformer;
+    }
+
+    /**
+     * Sets the serializable closure secret key.
+     *
+     * @param  \Closure|null  $resolver
+     * @return void
+     */
+    public static function resolveUseVariablesUsing($resolver)
+    {
+        Serializers\Native::$resolveUseVariables = $resolver;
+    }
+
+    /**
+     * Get the serializable representation of the closure.
+     *
+     * @return array
+     */
+    public function __serialize()
+    {
+        return [
+            'serializable' => $this->serializable,
+        ];
+    }
+
+    /**
+     * Restore the closure after serialization.
+     *
+     * @param  array  $data
+     * @return void
+     *
+     * @throws \Laravel\SerializableClosure\Exceptions\InvalidSignatureException
+     */
+    public function __unserialize($data)
+    {
+        if (Signed::$signer && ! $data['serializable'] instanceof Signed) {
+            throw new InvalidSignatureException();
+        }
+
+        $this->serializable = $data['serializable'];
+    }
+}