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<?php
declare (strict_types=1);
namespace Rector\Configuration\Levels;
use Rector\Contract\Rector\RectorInterface;
use Rector\Exception\ShouldNotHappenException;
use RectorPrefix202411\Webmozart\Assert\Assert;
final class LevelRulesResolver
{
/**
* @param array<class-string<RectorInterface>> $availableRules
* @return array<class-string<RectorInterface>>
*/
public static function resolve(int $level, array $availableRules, string $methodName) : array
{
// level < 0 is not allowed
Assert::natural($level, \sprintf('Level must be >= 0 on %s', $methodName));
Assert::allIsAOf($availableRules, RectorInterface::class);
$rulesCount = \count($availableRules);
if ($availableRules === []) {
throw new ShouldNotHappenException(\sprintf('There are no available rules in "%s()", define the available rules first', $methodName));
}
// start with 0
$maxLevel = $rulesCount - 1;
if ($level > $maxLevel) {
$level = $maxLevel;
}
$levelRules = [];
for ($i = 0; $i <= $level; ++$i) {
$levelRules[] = $availableRules[$i];
}
return $levelRules;
}
}
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