rector/rules/DowngradePhp72/NodeAnalyzer/ParamContravariantDetector.php

<?php

declare (strict_types=1);
namespace Rector\DowngradePhp72\NodeAnalyzer;

use PhpParser\Node\Stmt\ClassLike;
use PHPStan\Reflection\ClassReflection;
final class ParamContravariantDetector
{
    /**
     * @param ClassReflection[] $ancestors
     */
    public function hasParentMethod(\PHPStan\Reflection\ClassReflection $classReflection, array $ancestors, string $classMethodName) : bool
    {
        foreach ($ancestors as $ancestor) {
            if ($classReflection === $ancestor) {
                continue;
            }
            $ancestorHasMethod = $ancestor->hasMethod($classMethodName);
            if ($ancestorHasMethod) {
                return \true;
            }
        }
        return \false;
    }
    /**
     * @param ClassLike[] $classLikes
     */
    public function hasChildMethod(array $classLikes, string $classMethodName) : bool
    {
        foreach ($classLikes as $classLike) {
            $currentClassMethod = $classLike->getMethod($classMethodName);
            if ($currentClassMethod !== null) {
                return \true;
            }
        }
        return \false;
    }
}