rector/rules/TypeDeclaration/NodeAnalyzer/ReturnAnalyzer.php

<?php

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

use PhpParser\Node\Expr;
use PhpParser\Node\Expr\Closure;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Function_;
use PhpParser\Node\Stmt\Return_;
final class ReturnAnalyzer
{
    /**
     * @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|\PhpParser\Node\Expr\Closure $functionLike
     */
    public function hasClassMethodRootReturn($functionLike) : bool
    {
        foreach ((array) $functionLike->stmts as $stmt) {
            if ($stmt instanceof Return_) {
                return \true;
            }
        }
        return \false;
    }
    /**
     * @param Return_[] $returns
     */
    public function areExclusiveExprReturns(array $returns) : bool
    {
        foreach ($returns as $return) {
            if (!$return->expr instanceof Expr) {
                return \false;
            }
        }
        return \true;
    }
}