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<?php
declare(strict_types=1);
/**
* Copyright (c) 2018-2026 Andreas Möller
*
* For the full copyright and license information, please view
* the LICENSE.md file that was distributed with this source code.
*
* @see https://github.com/ergebnis/phpstan-rules
*/
namespace Ergebnis\PHPStan\Rules;
use PhpParser\Node;
/**
* @internal
*/
final class Analyzer
{
public function hasNullDefaultValue(Node\Param $parameter): bool
{
if (!$parameter->default instanceof Node\Expr\ConstFetch) {
return false;
}
return 'null' === $parameter->default->name->toLowerString();
}
/**
* @param null|Node\ComplexType|Node\Identifier|Node\Name $typeDeclaration
*/
public function isNullableTypeDeclaration($typeDeclaration): bool
{
if ($typeDeclaration instanceof Node\NullableType) {
return true;
}
if ($typeDeclaration instanceof Node\UnionType) {
foreach ($typeDeclaration->types as $type) {
if (
$type instanceof Node\Identifier
&& 'null' === $type->toLowerString()
) {
return true;
}
if (
$type instanceof Node\Name\FullyQualified
&& $type->hasAttribute('originalName')
) {
$originalName = $type->getAttribute('originalName');
if (
$originalName instanceof Node\Name
&& 'null' === $originalName->toLowerString()
) {
return true;
}
}
}
}
return false;
}
}
|
