* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Validator\Constraints; use Symfony\Component\Validator\Constraint; use Symfony\Component\Validator\ConstraintValidator; use Symfony\Component\Validator\Exception\UnexpectedTypeException; use Symfony\Component\Validator\Exception\ConstraintDefinitionException; /** * Validator for Callback constraint * * @author Bernhard Schussek * * @api */ class CallbackValidator extends ConstraintValidator { /** * {@inheritDoc} */ public function validate($object, Constraint $constraint) { if (null === $object) { return; } if (null !== $constraint->callback && null !== $constraint->methods) { throw new ConstraintDefinitionException( 'The Callback constraint supports either the option "callback" ' . 'or "methods", but not both at the same time.' ); } // has to be an array so that we can differentiate between callables // and method names if (null !== $constraint->methods && !is_array($constraint->methods)) { throw new UnexpectedTypeException($constraint->methods, 'array'); } $methods = $constraint->methods ?: array($constraint->callback); foreach ($methods as $method) { if (is_array($method) || $method instanceof \Closure) { if (!is_callable($method)) { throw new ConstraintDefinitionException(sprintf('"%s::%s" targeted by Callback constraint is not a valid callable', $method[0], $method[1])); } call_user_func($method, $object, $this->context); } else { if (!method_exists($object, $method)) { throw new ConstraintDefinitionException(sprintf('Method "%s" targeted by Callback constraint does not exist', $method)); } $reflMethod = new \ReflectionMethod($object, $method); if ($reflMethod->isStatic()) { $reflMethod->invoke(null, $object, $this->context); } else { $reflMethod->invoke($object, $this->context); } } } } }