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