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<?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'];
}
}