Current File : //opt/cpanel/ea-wappspector/vendor/rector/rector/rules/Php70/Rector/List_/EmptyListRector.php
<?php
declare (strict_types=1);
namespace Rector\Php70\Rector\List_;
use PhpParser\Node;
use PhpParser\Node\Expr\ArrayItem;
use PhpParser\Node\Expr\List_;
use PhpParser\Node\Expr\Variable;
use Rector\Rector\AbstractRector;
use Rector\ValueObject\PhpVersionFeature;
use Rector\VersionBonding\Contract\MinPhpVersionInterface;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @see \Rector\Tests\Php70\Rector\List_\EmptyListRector\EmptyListRectorTest
*/
final class EmptyListRector extends AbstractRector implements MinPhpVersionInterface
{
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('list() cannot be empty', [new CodeSample(<<<'CODE_SAMPLE'
'list() = $values;'
CODE_SAMPLE
, <<<'CODE_SAMPLE'
'list($unusedGenerated) = $values;'
CODE_SAMPLE
)]);
}
public function provideMinPhpVersion() : int
{
return PhpVersionFeature::NO_EMPTY_LIST;
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [List_::class];
}
/**
* @param List_ $node
*/
public function refactor(Node $node) : ?Node
{
foreach ($node->items as $item) {
if ($item instanceof ArrayItem) {
return null;
}
}
$node->items[0] = new ArrayItem(new Variable('unusedGenerated'));
return $node;
}
}
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