Integrating Value Object validation with custom Constraint of Symfony Validator

PhoneConstraintValidator.php

<?php

declare(strict_types = 1);

namespace Xthiago\Infrastructure\Validation\SymfonyValidator\Constraints;

use Xthiago\Domain\Model\PhoneNumber\PhoneNumber;
use Xthiago\Domain\Model\PhoneNumber\InvalidPhoneNumberException;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;

class PhoneConstraintValidator extends ConstraintValidator
{
    /**
     * {@inheritdoc}
     */
    public function validate($phoneNumber, Constraint $constraint) : void
    {
        if (null === $phoneNumber) {
            return;
        }

        try {
          new PhoneNumber($phoneNumber);
        } catch (InvalidPhoneNumberException $exception) {
          $this->context
               ->buildViolation($exception->getMessage())
               ->addViolation();
        }
    }
}

PhoneNumber.php

<?php

declare(strict_types = 1);

namespace Xthiago\Domain\Model\PhoneNumber;

class PhoneNumber
{
    const INVALID_PHONE_REGEX = "/[^0-9+ \-()]+/";

    /**
     * @var string
     */
    protected $phoneNumber;

    /**
     * PhoneNumber constructor.
     *
     * @param string $phoneNumber
     */
    public function __construct(string $phoneNumber)
    {
        if (empty($phoneNumber)) {
            throw InvalidPhoneNumberException::createForEmptyValue();
        }

        $phoneRegexResult = preg_match(self::INVALID_PHONE_REGEX, $phoneNumber);

        if (1 === $phoneRegexResult) {
            throw InvalidPhoneNumberException::createForInvalidValue($phoneNumber);
        }

        $this->phoneNumber = $phoneNumber;
    }

    /**
     * @return string
     */
    public function __toString()
    {
        return $this->phoneNumber;
    }
}