rector/vendor/rector/rector-downgrade-php/rules/DowngradePhp70/Rector/New_/DowngradeAnonymousClassRector.php

<?php

declare (strict_types=1);
namespace Rector\DowngradePhp70\Rector\New_;

use PhpParser\Node;
use PhpParser\Node\Expr\New_;
use PhpParser\Node\Name;
use PhpParser\Node\Stmt\Class_;
use Rector\Core\NodeAnalyzer\ClassAnalyzer;
use Rector\Core\Rector\AbstractRector;
use Rector\DowngradePhp70\NodeFactory\ClassFromAnonymousFactory;
use Rector\NodeManipulator\NamespacedNameDecorator;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
 * @see \Rector\Tests\DowngradePhp70\Rector\New_\DowngradeAnonymousClassRector\DowngradeAnonymousClassRectorTest
 */
final class DowngradeAnonymousClassRector extends AbstractRector
{
    /**
     * @var string
     */
    private const ANONYMOUS_CLASS_PREFIX = 'Anonymous__';
    /**
     * @var Class_[]
     */
    private $classes = [];
    /**
     * @readonly
     * @var \Rector\Core\NodeAnalyzer\ClassAnalyzer
     */
    private $classAnalyzer;
    /**
     * @readonly
     * @var \Rector\DowngradePhp70\NodeFactory\ClassFromAnonymousFactory
     */
    private $classFromAnonymousFactory;
    /**
     * @readonly
     * @var \Rector\NodeManipulator\NamespacedNameDecorator
     */
    private $namespacedNameDecorator;
    public function __construct(ClassAnalyzer $classAnalyzer, ClassFromAnonymousFactory $classFromAnonymousFactory, NamespacedNameDecorator $namespacedNameDecorator)
    {
        $this->classAnalyzer = $classAnalyzer;
        $this->classFromAnonymousFactory = $classFromAnonymousFactory;
        $this->namespacedNameDecorator = $namespacedNameDecorator;
    }
    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes() : array
    {
        return [New_::class];
    }
    public function getRuleDefinition() : RuleDefinition
    {
        return new RuleDefinition('Remove anonymous class', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
    public function run()
    {
        return new class {
            public function execute()
            {
            }
        };
    }
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class Anonymous
{
    public function execute()
    {
    }
}
class SomeClass
{
    public function run()
    {
        return new Anonymous();
    }
}
CODE_SAMPLE
)]);
    }
    /**
     * @param Node[] $nodes
     * @return Node[]|null
     */
    public function beforeTraverse(array $nodes) : ?array
    {
        $this->classes = [];
        return parent::beforeTraverse($nodes);
    }
    /**
     * @param Node[] $nodes
     * @return Node[]
     */
    public function afterTraverse(array $nodes)
    {
        if ($this->classes === []) {
            return $nodes;
        }
        return \array_merge($nodes, $this->classes);
    }
    /**
     * @param New_ $node
     */
    public function refactor(Node $node) : ?Node
    {
        if (!$this->classAnalyzer->isAnonymousClass($node->class)) {
            return null;
        }
        if (!$node->class instanceof Class_) {
            return null;
        }
        $className = $this->createAnonymousClassName();
        $class = $this->classFromAnonymousFactory->create($className, $node->class);
        $this->classes[] = $class;
        $this->namespacedNameDecorator->decorate($class);
        return new New_(new Name($className), $node->getArgs());
    }
    private function createAnonymousClassName() : string
    {
        $filePathHash = \md5($this->file->getFilePath());
        return self::ANONYMOUS_CLASS_PREFIX . $filePathHash . '__' . \count($this->classes);
    }
}