<?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\ExpressionLanguage\ExpressionLanguage;
use Symfony\Component\ExpressionLanguage\SyntaxError;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
use Symfony\Component\Validator\Exception\UnexpectedValueException;
/**
* @author Andrey Sevastianov <mrpkmail@gmail.com>
*/
class ExpressionLanguageSyntaxValidator extends ConstraintValidator
{
private $expressionLanguage;
public function __construct(ExpressionLanguage $expressionLanguage = null)
{
$this->expressionLanguage = $expressionLanguage;
}
/**
* {@inheritdoc}
*/
public function validate($expression, Constraint $constraint): void
{
if (!$constraint instanceof ExpressionLanguageSyntax) {
throw new UnexpectedTypeException($constraint, ExpressionLanguageSyntax::class);
}
if (!\is_string($expression)) {
throw new UnexpectedValueException($expression, 'string');
}
if (null === $this->expressionLanguage) {
$this->expressionLanguage = new ExpressionLanguage();
}
try {
$this->expressionLanguage->lint($expression, $constraint->allowedVariables);
} catch (SyntaxError $exception) {
$this->context->buildViolation($constraint->message)
->setParameter('{{ syntax_error }}', $this->formatValue($exception->getMessage()))
->setInvalidValue((string) $expression)
->setCode(ExpressionLanguageSyntax::EXPRESSION_LANGUAGE_SYNTAX_ERROR)
->addViolation();
}
}
}