Файл: symfony-2.7/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
Строк: 415
<?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 SymfonyComponentVarDumperCloner;
use SymfonyComponentVarDumperExceptionThrowingCasterException;
/**
* 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(
'SymfonyComponentVarDumperCasterCutStub' => 'SymfonyComponentVarDumperCasterStubCaster::castStub',
'SymfonyComponentVarDumperCasterConstStub' => 'SymfonyComponentVarDumperCasterStubCaster::castStub',
'Closure' => 'SymfonyComponentVarDumperCasterReflectionCaster::castClosure',
'Reflector' => 'SymfonyComponentVarDumperCasterReflectionCaster::castReflector',
'DoctrineCommonPersistenceObjectManager' => 'SymfonyComponentVarDumperCasterStubCaster::cutInternals',
'DoctrineCommonProxyProxy' => 'SymfonyComponentVarDumperCasterDoctrineCaster::castCommonProxy',
'DoctrineORMProxyProxy' => 'SymfonyComponentVarDumperCasterDoctrineCaster::castOrmProxy',
'DoctrineORMPersistentCollection' => 'SymfonyComponentVarDumperCasterDoctrineCaster::castPersistentCollection',
'DOMException' => 'SymfonyComponentVarDumperCasterDOMCaster::castException',
'DOMStringList' => 'SymfonyComponentVarDumperCasterDOMCaster::castLength',
'DOMNameList' => 'SymfonyComponentVarDumperCasterDOMCaster::castLength',
'DOMImplementation' => 'SymfonyComponentVarDumperCasterDOMCaster::castImplementation',
'DOMImplementationList' => 'SymfonyComponentVarDumperCasterDOMCaster::castLength',
'DOMNode' => 'SymfonyComponentVarDumperCasterDOMCaster::castNode',
'DOMNameSpaceNode' => 'SymfonyComponentVarDumperCasterDOMCaster::castNameSpaceNode',
'DOMDocument' => 'SymfonyComponentVarDumperCasterDOMCaster::castDocument',
'DOMNodeList' => 'SymfonyComponentVarDumperCasterDOMCaster::castLength',
'DOMNamedNodeMap' => 'SymfonyComponentVarDumperCasterDOMCaster::castLength',
'DOMCharacterData' => 'SymfonyComponentVarDumperCasterDOMCaster::castCharacterData',
'DOMAttr' => 'SymfonyComponentVarDumperCasterDOMCaster::castAttr',
'DOMElement' => 'SymfonyComponentVarDumperCasterDOMCaster::castElement',
'DOMText' => 'SymfonyComponentVarDumperCasterDOMCaster::castText',
'DOMTypeinfo' => 'SymfonyComponentVarDumperCasterDOMCaster::castTypeinfo',
'DOMDomError' => 'SymfonyComponentVarDumperCasterDOMCaster::castDomError',
'DOMLocator' => 'SymfonyComponentVarDumperCasterDOMCaster::castLocator',
'DOMDocumentType' => 'SymfonyComponentVarDumperCasterDOMCaster::castDocumentType',
'DOMNotation' => 'SymfonyComponentVarDumperCasterDOMCaster::castNotation',
'DOMEntity' => 'SymfonyComponentVarDumperCasterDOMCaster::castEntity',
'DOMProcessingInstruction' => 'SymfonyComponentVarDumperCasterDOMCaster::castProcessingInstruction',
'DOMXPath' => 'SymfonyComponentVarDumperCasterDOMCaster::castXPath',
'ErrorException' => 'SymfonyComponentVarDumperCasterExceptionCaster::castErrorException',
'Exception' => 'SymfonyComponentVarDumperCasterExceptionCaster::castException',
'SymfonyComponentDependencyInjectionContainerInterface' => 'SymfonyComponentVarDumperCasterStubCaster::cutInternals',
'SymfonyComponentVarDumperExceptionThrowingCasterException' => 'SymfonyComponentVarDumperCasterExceptionCaster::castThrowingCasterException',
'PDO' => 'SymfonyComponentVarDumperCasterPdoCaster::castPdo',
'PDOStatement' => 'SymfonyComponentVarDumperCasterPdoCaster::castPdoStatement',
'ArrayObject' => 'SymfonyComponentVarDumperCasterSplCaster::castArrayObject',
'SplDoublyLinkedList' => 'SymfonyComponentVarDumperCasterSplCaster::castDoublyLinkedList',
'SplFixedArray' => 'SymfonyComponentVarDumperCasterSplCaster::castFixedArray',
'SplHeap' => 'SymfonyComponentVarDumperCasterSplCaster::castHeap',
'SplObjectStorage' => 'SymfonyComponentVarDumperCasterSplCaster::castObjectStorage',
'SplPriorityQueue' => 'SymfonyComponentVarDumperCasterSplCaster::castHeap',
':curl' => 'SymfonyComponentVarDumperCasterResourceCaster::castCurl',
':dba' => 'SymfonyComponentVarDumperCasterResourceCaster::castDba',
':dba persistent' => 'SymfonyComponentVarDumperCasterResourceCaster::castDba',
':gd' => 'SymfonyComponentVarDumperCasterResourceCaster::castGd',
':mysql link' => 'SymfonyComponentVarDumperCasterResourceCaster::castMysqlLink',
':process' => 'SymfonyComponentVarDumperCasterResourceCaster::castProcess',
':stream' => 'SymfonyComponentVarDumperCasterResourceCaster::castStream',
':stream-context' => 'SymfonyComponentVarDumperCasterResourceCaster::castStreamContext',
);
protected $maxItems = 2500;
protected $maxString = -1;
protected $useExt;
private $casters = array();
private $prevErrorHandler;
private $classInfo = array();
/**
* @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) $maxString;
}
/**
* {@inheritdoc}
*/
public function cloneVar($var)
{
$this->prevErrorHandler = set_error_handler(array($this, 'handleError'));
try {
if (!function_exists('iconv')) {
$this->maxString = -1;
}
$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 = $stub->class;
if (isset($this->classInfo[$class])) {
$classInfo = $this->classInfo[$class];
$stub->class = $classInfo[0];
} else {
$classInfo = array(
$class,
method_exists($class, '__debugInfo'),
new ReflectionClass($class),
array_reverse(array($class => $class) + class_parents($class) + class_implements($class)),
);
$this->classInfo[$class] = $classInfo;
}
if ($classInfo[1]) {
$a = $this->callCaster(function ($obj) {return $obj->__debugInfo();}, $obj, array(), null, $isNested);
} else {
$a = (array) $obj;
}
foreach ($a as $k => $p) {
if (!isset($k[0]) || (" " !== $k[0] && !$classInfo[2]->hasProperty($k))) {
unset($a[$k]);
$a[" + ".$k] = $p;
}
}
foreach ($classInfo[3] 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, $isNested);
if (is_array($cast)) {
$a = $cast;
}
} catch (Exception $e) {
$a[" ~ ⚠"] = new ThrowingCasterException($callback, $e);
}
return $a;
}
/**
* Special handling for errors: cloning must be fail-safe.
*
* @internal
*/
public function handleError($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;
}
}