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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 = array(
'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',
'Closure' => 'Symfony\Component\VarDumper\Caster\ReflectionCaster::castClosure',
'Generator' => 'Symfony\Component\VarDumper\Caster\ReflectionCaster::castGenerator',
'ReflectionType' => 'Symfony\Component\VarDumper\Caster\ReflectionCaster::castType',
'ReflectionGenerator' => 'Symfony\Component\VarDumper\Caster\ReflectionCaster::castReflectionGenerator',
'ReflectionClass' => 'Symfony\Component\VarDumper\Caster\ReflectionCaster::castClass',
'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',
'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',
'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',
'DOMTypeinfo' => 'Symfony\Component\VarDumper\Caster\DOMCaster::castTypeinfo',
'DOMDomError' => 'Symfony\Component\VarDumper\Caster\DOMCaster::castDomError',
'DOMLocator' => 'Symfony\Component\VarDumper\Caster\DOMCaster::castLocator',
'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',
'ErrorException' => 'Symfony\Component\VarDumper\Caster\ExceptionCaster::castErrorException',
'Exception' => 'Symfony\Component\VarDumper\Caster\ExceptionCaster::castException',
'Error' => 'Symfony\Component\VarDumper\Caster\ExceptionCaster::castError',
'Symfony\Component\DependencyInjection\ContainerInterface' => 'Symfony\Component\VarDumper\Caster\StubCaster::cutInternals',
'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',
'PHPUnit_Framework_MockObject_MockObject' => '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',
'SplDoublyLinkedList' => 'Symfony\Component\VarDumper\Caster\SplCaster::castDoublyLinkedList',
'SplFileInfo' => 'Symfony\Component\VarDumper\Caster\SplCaster::castFileInfo',
'SplFileObject' => 'Symfony\Component\VarDumper\Caster\SplCaster::castFileObject',
'SplFixedArray' => 'Symfony\Component\VarDumper\Caster\SplCaster::castFixedArray',
'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',
'MongoCursorInterface' => 'Symfony\Component\VarDumper\Caster\MongoCaster::castCursor',
':curl' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castCurl',
':dba' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castDba',
':dba persistent' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castDba',
':gd' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castGd',
':mysql link' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castMysqlLink',
':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',
':stream-context' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castStreamContext',
':xml' => 'Symfony\Component\VarDumper\Caster\XmlResourceCaster::castXml',
);
protected $maxItems = 2500;
protected $maxString = -1;
protected $useExt;
private $casters = array();
private $prevErrorHandler;
private $classInfo = array();
private $filter = 0;
/**
* @param callable[]|null $casters A map of casters
*
* @see addCasters
*/
public function __construct(array $casters = null)
{
if (null === $casters) {
$casters = static::$defaultCasters;
}
$this->addCasters($casters);
$this->useExt = extension_loaded('symfony_debug');
}
/**
* Adds casters for resources and objects.
*
* Maps resources or objects types to a callback.
* Types are in the key, with a callable caster for value.
* Resource types are to be prefixed with a `:`,
* see e.g. static::$defaultCasters.
*
* @param callable[] $casters A map of casters
*/
public function addCasters(array $casters)
{
foreach ($casters as $type => $callback) {
$this->casters[strtolower($type)][] = $callback;
}
}
/**
* Sets the maximum number of items to clone past the first level in nested structures.
*
* @param int $maxItems
*/
public function setMaxItems($maxItems)
{
$this->maxItems = (int) $maxItems;
}
/**
* Sets the maximum cloned length for strings.
*
* @param int $maxString
*/
public function setMaxString($maxString)
{
$this->maxString = (int) $maxString;
}
/**
* Clones a PHP variable.
*
* @param mixed $var Any PHP variable
* @param int $filter A bit field of Caster::EXCLUDE_* constants
*
* @return Data The cloned variable represented by a Data object
*/
public function cloneVar($var, $filter = 0)
{
$this->prevErrorHandler = set_error_handler(function ($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 call_user_func($this->prevErrorHandler, $type, $msg, $file, $line, $context);
}
return false;
});
$this->filter = $filter;
try {
$data = $this->doClone($var);
} catch (\Exception $e) {
}
restore_error_handler();
$this->prevErrorHandler = null;
if (isset($e)) {
throw $e;
}
return new Data($data);
}
/**
* Effectively clones the PHP variable.
*
* @param mixed $var Any PHP variable
*
* @return array The cloned variable represented in an array
*/
abstract protected function doClone($var);
/**
* Casts an object to an array representation.
*
* @param Stub $stub The Stub for the casted object
* @param bool $isNested True if the object is nested in the dumped structure
*
* @return array The object casted as array
*/
protected function castObject(Stub $stub, $isNested)
{
$obj = $stub->value;
$class = $stub->class;
if (isset($class[15]) && "\0" === $class[15] && 0 === strpos($class, "class@anonymous\x00")) {
$stub->class = get_parent_class($class).'@anonymous';
}
if (isset($this->classInfo[$class])) {
$classInfo = $this->classInfo[$class];
} else {
$classInfo = array(
new \ReflectionClass($class),
array_reverse(array($class => $class) + class_parents($class) + class_implements($class) + array('*' => '*')),
);
$this->classInfo[$class] = $classInfo;
}
$a = $this->callCaster('Symfony\Component\VarDumper\Caster\Caster::castObject', $obj, $classInfo[0], null, $isNested);
foreach ($classInfo[1] as $p) {
if (!empty($this->casters[$p = strtolower($p)])) {
foreach ($this->casters[$p] as $p) {
$a = $this->callCaster($p, $obj, $a, $stub, $isNested);
}
}
}
return $a;
}
/**
* Casts a resource to an array representation.
*
* @param Stub $stub The Stub for the casted resource
* @param bool $isNested True if the object is nested in the dumped structure
*
* @return array The resource casted as array
*/
protected function castResource(Stub $stub, $isNested)
{
$a = array();
$res = $stub->value;
$type = $stub->class;
if (!empty($this->casters[':'.$type])) {
foreach ($this->casters[':'.$type] as $c) {
$a = $this->callCaster($c, $res, $a, $stub, $isNested);
}
}
return $a;
}
/**
* Calls a custom caster.
*
* @param callable $callback The caster
* @param object|resource $obj The object/resource being casted
* @param array $a The result of the previous cast for chained casters
* @param Stub $stub The Stub for the casted object/resource
* @param bool $isNested True if $obj is nested in the dumped structure
*
* @return array The casted object/resource
*/
private function callCaster($callback, $obj, $a, $stub, $isNested)
{
try {
$cast = call_user_func($callback, $obj, $a, $stub, $isNested, $this->filter);
if (is_array($cast)) {
$a = $cast;
}
} catch (\Exception $e) {
$a[(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'âš '] = new ThrowingCasterException($e);
}
return $a;
}
}