PrimitiveTypeConstraintValidator.php

<?php

namespace Drupal\Core\Validation\Plugin\Validation\Constraint;

use Drupal\Core\TypedData\Type\BinaryInterface;
use Drupal\Core\TypedData\Type\BooleanInterface;
use Drupal\Core\TypedData\Type\DateTimeInterface;
use Drupal\Core\TypedData\Type\DecimalInterface;
use Drupal\Core\TypedData\Type\DurationInterface;
use Drupal\Core\TypedData\Type\FloatInterface;
use Drupal\Core\TypedData\Type\IntegerInterface;
use Drupal\Core\TypedData\Type\StringInterface;
use Drupal\Core\TypedData\Type\UriInterface;
use Drupal\Core\TypedData\Validation\TypedDataAwareValidatorTrait;
use Drupal\Component\Render\MarkupInterface;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;

/**
 * Validates the PrimitiveType constraint.
 */
class PrimitiveTypeConstraintValidator extends ConstraintValidator {
    use TypedDataAwareValidatorTrait;
    
    /**
     * {@inheritdoc}
     */
    public function validate($value, Constraint $constraint) : void {
        if (!isset($value)) {
            return;
        }
        $typed_data = $this->getTypedData();
        $valid = TRUE;
        if ($typed_data instanceof BinaryInterface && !is_resource($value)) {
            $valid = FALSE;
        }
        if ($typed_data instanceof BooleanInterface && !(is_bool($value) || $value === 0 || $value === '0' || $value === 1 || $value == '1')) {
            $valid = FALSE;
        }
        if ($typed_data instanceof FloatInterface && filter_var($value, FILTER_VALIDATE_FLOAT) === FALSE) {
            $valid = FALSE;
        }
        if ($typed_data instanceof IntegerInterface && filter_var($value, FILTER_VALIDATE_INT) === FALSE) {
            $valid = FALSE;
        }
        if ($typed_data instanceof DecimalInterface && !preg_match('/^[+-]?((\\d+(\\.\\d*)?)|(\\.\\d+))$/i', $value)) {
            $valid = FALSE;
        }
        if ($typed_data instanceof StringInterface && !is_scalar($value) && !$value instanceof MarkupInterface) {
            $valid = FALSE;
        }
        // Ensure that URIs comply with http://tools.ietf.org/html/rfc3986, which
        // requires:
        // - That it is well formed (parse_url() returns FALSE if not).
        // - That it contains a scheme (parse_url(, PHP_URL_SCHEME) returns NULL if
        //   not).
        if ($typed_data instanceof UriInterface && in_array(parse_url($value, PHP_URL_SCHEME), [
            NULL,
            FALSE,
        ], TRUE)) {
            $valid = FALSE;
        }
        // @todo Move those to separate constraint validators.
        try {
            if ($typed_data instanceof DateTimeInterface && $typed_data->getDateTime() && $typed_data->getDateTime()
                ->hasErrors()) {
                $valid = FALSE;
            }
            if ($typed_data instanceof DurationInterface && $typed_data->getDuration() && !$typed_data->getDuration() instanceof \DateInterval) {
                $valid = FALSE;
            }
        } catch (\Exception $e) {
            // Invalid durations or dates might throw exceptions.
            $valid = FALSE;
        }
        if (!$valid) {
            // @todo Provide a good violation message for each problem.
            $this->context
                ->addViolation($constraint->message, [
                '%value' => is_object($value) ? get_class($value) : (is_array($value) ? 'Array' : (string) $value),
            ]);
        }
    }

}