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Mini Shell
<?php
declare (strict_types=1);
namespace Rector\Core\Validation;
use PhpParser\Node;
use PhpParser\NodeTraverser;
use Rector\Core\Contract\Rector\RectorInterface;
use Rector\Core\Exception\NodeTraverser\InfiniteLoopTraversingException;
use Rector\Core\NodeDecorator\CreatedByRuleDecorator;
use Rector\Core\PhpParser\Node\BetterNodeFinder;
use Rector\Core\PhpParser\NodeVisitor\CreatedByRuleNodeVisitor;
use Rector\DowngradePhp74\Rector\ArrowFunction\ArrowFunctionToAnonymousFunctionRector;
use Rector\DowngradePhp80\Rector\NullsafeMethodCall\DowngradeNullsafeToTernaryOperatorRector;
use Rector\NodeTypeResolver\Node\AttributeKey;
use Rector\Php74\Rector\Closure\ClosureToArrowFunctionRector;
final class InfiniteLoopValidator
{
/**
* @var array<class-string<RectorInterface>>
*/
private const ALLOWED_INFINITE_RECTOR_CLASSES = [\Rector\DowngradePhp80\Rector\NullsafeMethodCall\DowngradeNullsafeToTernaryOperatorRector::class, \Rector\DowngradePhp74\Rector\ArrowFunction\ArrowFunctionToAnonymousFunctionRector::class, \Rector\Php74\Rector\Closure\ClosureToArrowFunctionRector::class];
/**
* @readonly
* @var \Rector\Core\PhpParser\Node\BetterNodeFinder
*/
private $betterNodeFinder;
/**
* @readonly
* @var \Rector\Core\NodeDecorator\CreatedByRuleDecorator
*/
private $createdByRuleDecorator;
public function __construct(\Rector\Core\PhpParser\Node\BetterNodeFinder $betterNodeFinder, \Rector\Core\NodeDecorator\CreatedByRuleDecorator $createdByRuleDecorator)
{
$this->betterNodeFinder = $betterNodeFinder;
$this->createdByRuleDecorator = $createdByRuleDecorator;
}
/**
* @param class-string<RectorInterface> $rectorClass
*/
public function process(\PhpParser\Node $node, \PhpParser\Node $originalNode, string $rectorClass) : void
{
if (\in_array($rectorClass, self::ALLOWED_INFINITE_RECTOR_CLASSES, \true)) {
return;
}
$createdByRule = $originalNode->getAttribute(\Rector\NodeTypeResolver\Node\AttributeKey::CREATED_BY_RULE) ?? [];
// special case
if (\in_array($rectorClass, $createdByRule, \true)) {
// does it contain the same node type as input?
$originalNodeClass = \get_class($originalNode);
$hasNestedOriginalNodeType = $this->betterNodeFinder->findInstanceOf($node, $originalNodeClass);
if ($hasNestedOriginalNodeType !== []) {
throw new \Rector\Core\Exception\NodeTraverser\InfiniteLoopTraversingException($rectorClass);
}
}
$this->decorateNode($originalNode, $rectorClass);
}
/**
* @param class-string<RectorInterface> $rectorClass
*/
private function decorateNode(\PhpParser\Node $node, string $rectorClass) : void
{
$nodeTraverser = new \PhpParser\NodeTraverser();
$createdByRuleNodeVisitor = new \Rector\Core\PhpParser\NodeVisitor\CreatedByRuleNodeVisitor($this->createdByRuleDecorator, $rectorClass);
$nodeTraverser->addVisitor($createdByRuleNodeVisitor);
$nodeTraverser->traverse([$node]);
}
}
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