NamespaceCheck.php

<?php

declare (strict_types=1);
namespace mglaman\PHPStanDrupal\Internal;

use PhpParser\Node\Stmt\Class_;

/**
 * @internal
 */
final class NamespaceCheck {
    public static function isDrupalNamespace(Class_ $class) : bool {
        if (!isset($class->namespacedName)) {
            return false;
        }
        return 'Drupal' === (string) $class->namespacedName
            ->slice(0, 1);
    }
    public static function isSharedNamespace(Class_ $class) : bool {
        if (!isset($class->extends)) {
            return false;
        }
        if (!isset($class->namespacedName)) {
            return false;
        }
        if (!self::isDrupalNamespace($class)) {
            return false;
        }
        return (string) $class->namespacedName
            ->slice(0, 2) === (string) $class->extends
            ->slice(0, 2);
    }

}