--- /dev/null
+<?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\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ * @Target({"CLASS", "PROPERTY", "METHOD", "ANNOTATION"})
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class Callback extends Constraint
+{
+ /**
+ * @var string|callable
+ */
+ public $callback;
+
+ /**
+ * @var array
+ *
+ * @deprecated since version 2.4, to be removed in 3.0.
+ */
+ public $methods;
+
+ /**
+ * {@inheritdoc}
+ */
+ public function __construct($options = null)
+ {
+ // Invocation through annotations with an array parameter only
+ if (is_array($options) && 1 === count($options) && isset($options['value'])) {
+ $options = $options['value'];
+ }
+
+ if (is_array($options) && isset($options['methods'])) {
+ @trigger_error('The "methods" option of the '.__CLASS__.' class is deprecated since version 2.4 and will be removed in 3.0. Use the "callback" option instead.', E_USER_DEPRECATED);
+ }
+
+ if (is_array($options) && !isset($options['callback']) && !isset($options['methods']) && !isset($options['groups']) && !isset($options['payload'])) {
+ if (is_callable($options) || !$options) {
+ $options = array('callback' => $options);
+ } else {
+ // @deprecated, to be removed in 3.0
+ $options = array('methods' => $options);
+ }
+ }
+
+ parent::__construct($options);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDefaultOption()
+ {
+ return 'callback';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getTargets()
+ {
+ return array(self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT);
+ }
+}