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%PDF-
Mini Shell
Mini Shell
<?php
declare (strict_types=1);
namespace Rector\Php72\Rector\Unset_;
use PhpParser\Node;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\Cast\Unset_;
use PhpParser\Node\Stmt\Expression;
use Rector\Core\Rector\AbstractRector;
use Rector\Core\ValueObject\PhpVersionFeature;
use Rector\NodeTypeResolver\Node\AttributeKey;
use Rector\VersionBonding\Contract\MinPhpVersionInterface;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @see \Rector\Tests\Php72\Rector\Unset_\UnsetCastRector\UnsetCastRectorTest
*/
final class UnsetCastRector extends AbstractRector implements MinPhpVersionInterface
{
public function provideMinPhpVersion() : int
{
return PhpVersionFeature::NO_UNSET_CAST;
}
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Removes (unset) cast', [new CodeSample(<<<'CODE_SAMPLE'
$different = (unset) $value;
$value = (unset) $value;
CODE_SAMPLE
, <<<'CODE_SAMPLE'
$different = null;
unset($value);
CODE_SAMPLE
)]);
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [Unset_::class, Assign::class];
}
/**
* @param Unset_|Assign $node
*/
public function refactor(Node $node) : ?Node
{
if ($node instanceof Assign) {
if ($node->expr instanceof Unset_) {
$unset = $node->expr;
if ($this->nodeComparator->areNodesEqual($node->var, $unset->expr)) {
return $this->nodeFactory->createFuncCall('unset', [$node->var]);
}
}
return null;
}
$parentNode = $node->getAttribute(AttributeKey::PARENT_NODE);
if ($parentNode instanceof Expression) {
$this->removeNode($node);
return null;
}
return $this->nodeFactory->createNull();
}
}
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