<?php declare(strict_types = 1);

namespace PHPStan\Internal;

use PHPStan\BetterReflection\Reflection\Attribute\ReflectionAttributeHelper;

use PHPStan\BetterReflection\Reflection\ReflectionAttribute;

use function is_int;

use function is_string;

final class DeprecatedAttributeHelper

{

/**

* @param list<ReflectionAttribute> $attributes

*/

public static function getDeprecatedDescription(array $attributes): ?string

{

$deprecated = ReflectionAttributeHelper::filterAttributesByName($attributes, 'Deprecated');

foreach ($deprecated as $attr) {

$arguments = $attr->getArguments();

foreach ($arguments as $i => $arg) {

if (!is_string($arg)) {

continue;

}

if (is_int($i)) {

if ($i !== 0) {

continue;

}

return $arg;

}

if ($i !== 'message') {

continue;

}

return $arg;

}

}

return null;

}

}