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NewStaticToNewSelfRector.php
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NewStaticToNewSelfRector.php
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<?php
declare (strict_types=1);
namespace Rector\CodeQuality\Rector\New_;
use PhpParser\Node;
use PhpParser\Node\Expr\New_;
use PhpParser\Node\Name;
use PhpParser\Node\Stmt\Class_;
use Rector\Enum\ObjectReference;
use Rector\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @see \Rector\Tests\CodeQuality\Rector\New_\NewStaticToNewSelfRector\NewStaticToNewSelfRectorTest
*/
final class NewStaticToNewSelfRector extends AbstractRector
{
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Change unsafe new static() to new self()', [new CodeSample(<<<'CODE_SAMPLE'
final class SomeClass
{
public function build()
{
return new static();
}
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
final class SomeClass
{
public function build()
{
return new self();
}
}
CODE_SAMPLE
)]);
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [Class_::class];
}
/**
* @param Class_ $node
*/
public function refactor(Node $node) : ?Node
{
if (!$node->isFinal()) {
return null;
}
$hasChanged = \false;
$this->traverseNodesWithCallable($node, function (Node $node) use(&$hasChanged) : ?New_ {
if (!$node instanceof New_) {
return null;
}
if (!$this->isName($node->class, ObjectReference::STATIC)) {
return null;
}
$hasChanged = \true;
$node->class = new Name(ObjectReference::SELF);
return $node;
});
if ($hasChanged) {
return $node;
}
return null;
}
}