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diff --git a/vendor/symfony/validator/Constraints/RegexValidator.php b/vendor/symfony/validator/Constraints/RegexValidator.php
new file mode 100644
index 000000000..0aa0ed5e0
--- /dev/null
+++ b/vendor/symfony/validator/Constraints/RegexValidator.php
@@ -0,0 +1,60 @@
+<?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\Context\ExecutionContextInterface;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+/**
+ * Validates whether a value match or not given regexp pattern.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ * @author Joseph Bielawski <stloyd@gmail.com>
+ */
+class RegexValidator extends ConstraintValidator
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function validate($value, Constraint $constraint)
+    {
+        if (!$constraint instanceof Regex) {
+            throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Regex');
+        }
+
+        if (null === $value || '' === $value) {
+            return;
+        }
+
+        if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
+            throw new UnexpectedTypeException($value, 'string');
+        }
+
+        $value = (string) $value;
+
+        if ($constraint->match xor preg_match($constraint->pattern, $value)) {
+            if ($this->context instanceof ExecutionContextInterface) {
+                $this->context->buildViolation($constraint->message)
+                    ->setParameter('{{ value }}', $this->formatValue($value))
+                    ->setCode(Regex::REGEX_FAILED_ERROR)
+                    ->addViolation();
+            } else {
+                $this->buildViolation($constraint->message)
+                    ->setParameter('{{ value }}', $this->formatValue($value))
+                    ->setCode(Regex::REGEX_FAILED_ERROR)
+                    ->addViolation();
+            }
+        }
+    }
+}