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RemoveConcatAutocastRector.php
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RemoveConcatAutocastRector.php
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<?php
declare (strict_types=1);
namespace Rector\DeadCode\Rector\Concat;
use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\BinaryOp\Concat;
use PhpParser\Node\Expr\Cast\String_;
use Rector\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @see \Rector\Tests\DeadCode\Rector\Concat\RemoveConcatAutocastRector\RemoveConcatAutocastRectorTest
*/
final class RemoveConcatAutocastRector extends AbstractRector
{
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Remove (string) casting when it comes to concat, that does this by default', [new CodeSample(<<<'CODE_SAMPLE'
class SomeConcatingClass
{
public function run($value)
{
return 'hi ' . (string) $value;
}
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeConcatingClass
{
public function run($value)
{
return 'hi ' . $value;
}
}
CODE_SAMPLE
)]);
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [Concat::class];
}
/**
* @param Concat $node
*/
public function refactor(Node $node) : ?Node
{
if (!$node->left instanceof String_ && !$node->right instanceof String_) {
return null;
}
$node->left = $this->removeStringCast($node->left);
$node->right = $this->removeStringCast($node->right);
return $node;
}
private function removeStringCast(Expr $expr) : Expr
{
return $expr instanceof String_ ? $expr->expr : $expr;
}
}