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Cloner
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AbstractCloner.php
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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\VarDumper\Cloner; use Symfony\Component\VarDumper\Caster\Caster; use Symfony\Component\VarDumper\Exception\ThrowingCasterException; /** * AbstractCloner implements a generic caster mechanism for objects and resources. * * @author Nicolas Grekas <p@tchwork.com> */ abstract class AbstractCloner implements ClonerInterface { public static $defaultCasters = [ '__PHP_Incomplete_Class' => ['Symfony\Component\VarDumper\Caster\Caster', 'castPhpIncompleteClass'], 'Symfony\Component\VarDumper\Caster\CutStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'], 'Symfony\Component\VarDumper\Caster\CutArrayStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castCutArray'], 'Symfony\Component\VarDumper\Caster\ConstStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'], 'Symfony\Component\VarDumper\Caster\EnumStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'], 'Fiber' => ['Symfony\Component\VarDumper\Caster\FiberCaster', 'castFiber'], 'Closure' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'], 'Generator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'], 'ReflectionType' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'], 'ReflectionAttribute' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castAttribute'], 'ReflectionGenerator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReflectionGenerator'], 'ReflectionClass' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClass'], 'ReflectionClassConstant' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClassConstant'], 'ReflectionFunctionAbstract' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castFunctionAbstract'], 'ReflectionMethod' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castMethod'], 'ReflectionParameter' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castParameter'], 'ReflectionProperty' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castProperty'], 'ReflectionReference' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReference'], 'ReflectionExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castExtension'], 'ReflectionZendExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castZendExtension'], 'Doctrine\Common\Persistence\ObjectManager' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'Doctrine\Common\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castCommonProxy'], 'Doctrine\ORM\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castOrmProxy'], 'Doctrine\ORM\PersistentCollection' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castPersistentCollection'], 'Doctrine\Persistence\ObjectManager' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'DOMException' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castException'], 'DOMStringList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'], 'DOMNameList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'], 'DOMImplementation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castImplementation'], 'DOMImplementationList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'], 'DOMNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNode'], 'DOMNameSpaceNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNameSpaceNode'], 'DOMDocument' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocument'], 'DOMNodeList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'], 'DOMNamedNodeMap' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'], 'DOMCharacterData' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castCharacterData'], 'DOMAttr' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castAttr'], 'DOMElement' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castElement'], 'DOMText' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castText'], 'DOMDocumentType' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocumentType'], 'DOMNotation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNotation'], 'DOMEntity' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castEntity'], 'DOMProcessingInstruction' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castProcessingInstruction'], 'DOMXPath' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castXPath'], 'XMLReader' => ['Symfony\Component\VarDumper\Caster\XmlReaderCaster', 'castXmlReader'], 'ErrorException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castErrorException'], 'Exception' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'], 'Error' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'], 'Symfony\Bridge\Monolog\Logger' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'Symfony\Component\DependencyInjection\ContainerInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'Symfony\Component\EventDispatcher\EventDispatcherInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'Symfony\Component\HttpClient\AmpHttpClient' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClient'], 'Symfony\Component\HttpClient\CurlHttpClient' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClient'], 'Symfony\Component\HttpClient\NativeHttpClient' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClient'], 'Symfony\Component\HttpClient\Response\AmpResponse' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClientResponse'], 'Symfony\Component\HttpClient\Response\CurlResponse' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClientResponse'], 'Symfony\Component\HttpClient\Response\NativeResponse' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClientResponse'], 'Symfony\Component\HttpFoundation\Request' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'], 'Symfony\Component\Uid\Ulid' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castUlid'], 'Symfony\Component\Uid\Uuid' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castUuid'], 'Symfony\Component\VarExporter\Internal\LazyObjectState' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castLazyObjectState'], 'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'], 'Symfony\Component\VarDumper\Caster\TraceStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'], 'Symfony\Component\VarDumper\Caster\FrameStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'], 'Symfony\Component\VarDumper\Cloner\AbstractCloner' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'Symfony\Component\ErrorHandler\Exception\SilencedErrorContext' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castSilencedErrorContext'], 'Imagine\Image\ImageInterface' => ['Symfony\Component\VarDumper\Caster\ImagineCaster', 'castImage'], 'Ramsey\Uuid\UuidInterface' => ['Symfony\Component\VarDumper\Caster\UuidCaster', 'castRamseyUuid'], 'ProxyManager\Proxy\ProxyInterface' => ['Symfony\Component\VarDumper\Caster\ProxyManagerCaster', 'castProxy'], 'PHPUnit_Framework_MockObject_MockObject' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'PHPUnit\Framework\MockObject\MockObject' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'PHPUnit\Framework\MockObject\Stub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'Prophecy\Prophecy\ProphecySubjectInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'Mockery\MockInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'], 'PDO' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdo'], 'PDOStatement' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdoStatement'], 'AMQPConnection' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castConnection'], 'AMQPChannel' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castChannel'], 'AMQPQueue' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castQueue'], 'AMQPExchange' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castExchange'], 'AMQPEnvelope' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castEnvelope'], 'ArrayObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayObject'], 'ArrayIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayIterator'], 'SplDoublyLinkedList' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castDoublyLinkedList'], 'SplFileInfo' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileInfo'], 'SplFileObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileObject'], 'SplHeap' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'], 'SplObjectStorage' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castObjectStorage'], 'SplPriorityQueue' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'], 'OuterIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castOuterIterator'], 'WeakReference' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castWeakReference'], 'Redis' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedis'], 'RedisArray' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisArray'], 'RedisCluster' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisCluster'], 'DateTimeInterface' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castDateTime'], 'DateInterval' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castInterval'], 'DateTimeZone' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castTimeZone'], 'DatePeriod' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castPeriod'], 'GMP' => ['Symfony\Component\VarDumper\Caster\GmpCaster', 'castGmp'], 'MessageFormatter' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castMessageFormatter'], 'NumberFormatter' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castNumberFormatter'], 'IntlTimeZone' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlTimeZone'], 'IntlCalendar' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlCalendar'], 'IntlDateFormatter' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlDateFormatter'], 'Memcached' => ['Symfony\Component\VarDumper\Caster\MemcachedCaster', 'castMemcached'], 'Ds\Collection' => ['Symfony\Component\VarDumper\Caster\DsCaster', 'castCollection'], 'Ds\Map' => ['Symfony\Component\VarDumper\Caster\DsCaster', 'castMap'], 'Ds\Pair' => ['Symfony\Component\VarDumper\Caster\DsCaster', 'castPair'], 'Symfony\Component\VarDumper\Caster\DsPairStub' => ['Symfony\Component\VarDumper\Caster\DsCaster', 'castPairStub'], 'mysqli_driver' => ['Symfony\Component\VarDumper\Caster\MysqliCaster', 'castMysqliDriver'], 'CurlHandle' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castCurl'], ':dba' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'], ':dba persistent' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'], 'GdImage' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'], ':gd' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'], ':pgsql large object' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLargeObject'], ':pgsql link' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'], ':pgsql link persistent' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'], ':pgsql result' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castResult'], ':process' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castProcess'], ':stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'], 'OpenSSLCertificate' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castOpensslX509'], ':OpenSSL X.509' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castOpensslX509'], ':persistent stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'], ':stream-context' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStreamContext'], 'XmlParser' => ['Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'], ':xml' => ['Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'], 'RdKafka' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castRdKafka'], 'RdKafka\Conf' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castConf'], 'RdKafka\KafkaConsumer' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castKafkaConsumer'], 'RdKafka\Metadata\Broker' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castBrokerMetadata'], 'RdKafka\Metadata\Collection' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castCollectionMetadata'], 'RdKafka\Metadata\Partition' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castPartitionMetadata'], 'RdKafka\Metadata\Topic' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castTopicMetadata'], 'RdKafka\Message' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castMessage'], 'RdKafka\Topic' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castTopic'], 'RdKafka\TopicPartition' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castTopicPartition'], 'RdKafka\TopicConf' => ['Symfony\Component\VarDumper\Caster\RdKafkaCaster', 'castTopicConf'], 'FFI\CData' => ['Symfony\Component\VarDumper\Caster\FFICaster', 'castCTypeOrCData'], 'FFI\CType' => ['Symfony\Component\VarDumper\Caster\FFICaster', 'castCTypeOrCData'], ]; protected $maxItems = 2500; protected $maxString = -1; protected $minDepth = 1; /** * @var array<string, list<callable>> */ private array $casters = []; /** * @var callable|null */ private $prevErrorHandler; private array $classInfo = []; private int $filter = 0; /** * @param callable[]|null $casters A map of casters * * @see addCasters */ public function __construct(array $casters = null) { $this->addCasters($casters ?? static::$defaultCasters); } /** * Adds casters for resources and objects. * * Maps resources or objects types to a callback. * Types are in the key, with a callable caster for value. * Resource types are to be prefixed with a `:`, * see e.g. static::$defaultCasters. * * @param callable[] $casters A map of casters */ public function addCasters(array $casters) { foreach ($casters as $type => $callback) { $this->casters[$type][] = $callback; } } /** * Sets the maximum number of items to clone past the minimum depth in nested structures. */ public function setMaxItems(int $maxItems) { $this->maxItems = $maxItems; } /** * Sets the maximum cloned length for strings. */ public function setMaxString(int $maxString) { $this->maxString = $maxString; } /** * Sets the minimum tree depth where we are guaranteed to clone all the items. After this * depth is reached, only setMaxItems items will be cloned. */ public function setMinDepth(int $minDepth) { $this->minDepth = $minDepth; } /** * Clones a PHP variable. * * @param int $filter A bit field of Caster::EXCLUDE_* constants */ public function cloneVar(mixed $var, int $filter = 0): Data { $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) { if (\E_RECOVERABLE_ERROR === $type || \E_USER_ERROR === $type) { // Cloner never dies throw new \ErrorException($msg, 0, $type, $file, $line); } if ($this->prevErrorHandler) { return ($this->prevErrorHandler)($type, $msg, $file, $line, $context); } return false; }); $this->filter = $filter; if ($gc = gc_enabled()) { gc_disable(); } try { return new Data($this->doClone($var)); } finally { if ($gc) { gc_enable(); } restore_error_handler(); $this->prevErrorHandler = null; } } /** * Effectively clones the PHP variable. */ abstract protected function doClone(mixed $var): array; /** * Casts an object to an array representation. * * @param bool $isNested True if the object is nested in the dumped structure */ protected function castObject(Stub $stub, bool $isNested): array { $obj = $stub->value; $class = $stub->class; if (str_contains($class, "@anonymous\0")) { $stub->class = get_debug_type($obj); } if (isset($this->classInfo[$class])) { [$i, $parents, $hasDebugInfo, $fileInfo] = $this->classInfo[$class]; } else { $i = 2; $parents = [$class]; $hasDebugInfo = method_exists($class, '__debugInfo'); foreach (class_parents($class) as $p) { $parents[] = $p; ++$i; } foreach (class_implements($class) as $p) { $parents[] = $p; ++$i; } $parents[] = '*'; $r = new \ReflectionClass($class); $fileInfo = $r->isInternal() || $r->isSubclassOf(Stub::class) ? [] : [ 'file' => $r->getFileName(), 'line' => $r->getStartLine(), ]; $this->classInfo[$class] = [$i, $parents, $hasDebugInfo, $fileInfo]; } $stub->attr += $fileInfo; $a = Caster::castObject($obj, $class, $hasDebugInfo, $stub->class); try { while ($i--) { if (!empty($this->casters[$p = $parents[$i]])) { foreach ($this->casters[$p] as $callback) { $a = $callback($obj, $a, $stub, $isNested, $this->filter); } } } } catch (\Exception $e) { $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a; } return $a; } /** * Casts a resource to an array representation. * * @param bool $isNested True if the object is nested in the dumped structure */ protected function castResource(Stub $stub, bool $isNested): array { $a = []; $res = $stub->value; $type = $stub->class; try { if (!empty($this->casters[':'.$type])) { foreach ($this->casters[':'.$type] as $callback) { $a = $callback($res, $a, $stub, $isNested, $this->filter); } } } catch (\Exception $e) { $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a; } return $a; } }