Symfony Profiler

<?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\Config\Resource;
use Symfony\Component\DependencyInjection\ServiceSubscriberInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* @author Nicolas Grekas <p@tchwork.com>
*/
class ReflectionClassResource implements SelfCheckingResourceInterface, \Serializable
{
private $files = [];
private $className;
private $classReflector;
private $excludedVendors = [];
private $hash;
public function __construct(\ReflectionClass $classReflector, $excludedVendors = [])
{
$this->className = $classReflector->name;
$this->classReflector = $classReflector;
$this->excludedVendors = $excludedVendors;
}
public function isFresh($timestamp)
{
if (null === $this->hash) {
$this->hash = $this->computeHash();
$this->loadFiles($this->classReflector);
}
foreach ($this->files as $file => $v) {
if (false === $filemtime = @filemtime($file)) {
return false;
}
if ($filemtime > $timestamp) {
return $this->hash === $this->computeHash();
}
}
return true;
}
public function __toString()
{
return 'reflection.'.$this->className;
}
/**
* @internal
*/
public function serialize()
{
if (null === $this->hash) {
$this->hash = $this->computeHash();
$this->loadFiles($this->classReflector);
}
return serialize([$this->files, $this->className, $this->hash]);
}
/**
* @internal
*/
public function unserialize($serialized)
{
list($this->files, $this->className, $this->hash) = unserialize($serialized);
}
private function loadFiles(\ReflectionClass $class)
{
foreach ($class->getInterfaces() as $v) {
$this->loadFiles($v);
}
do {
$file = $class->getFileName();
if (false !== $file && file_exists($file)) {
foreach ($this->excludedVendors as $vendor) {
if (0 === strpos($file, $vendor) && false !== strpbrk(substr($file, \strlen($vendor), 1), '/'.\DIRECTORY_SEPARATOR)) {
$file = false;
break;
}
}
if ($file) {
$this->files[$file] = null;
}
}
foreach ($class->getTraits() as $v) {
$this->loadFiles($v);
}
} while ($class = $class->getParentClass());
}
private function computeHash()
{
if (null === $this->classReflector) {
try {
$this->classReflector = new \ReflectionClass($this->className);
} catch (\ReflectionException $e) {
// the class does not exist anymore
return false;
}
}
$hash = hash_init('md5');
foreach ($this->generateSignature($this->classReflector) as $info) {
hash_update($hash, $info);
}
return hash_final($hash);
}
private function generateSignature(\ReflectionClass $class)
{
yield $class->getDocComment();
yield (int) $class->isFinal();
yield (int) $class->isAbstract();
if ($class->isTrait()) {
yield print_r(class_uses($class->name), true);
} else {
yield print_r(class_parents($class->name), true);
yield print_r(class_implements($class->name), true);
yield print_r($class->getConstants(), true);
}
if (!$class->isInterface()) {
$defaults = $class->getDefaultProperties();
foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC | \ReflectionProperty::IS_PROTECTED) as $p) {
yield $p->getDocComment().$p;
yield print_r(isset($defaults[$p->name]) && !\is_object($defaults[$p->name]) ? $defaults[$p->name] : null, true);
}
}
if (\defined('HHVM_VERSION')) {
foreach ($class->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_PROTECTED) as $m) {
// workaround HHVM bug with variadics, see https://github.com/facebook/hhvm/issues/5762
yield preg_replace('/^ @@.*/m', '', new ReflectionMethodHhvmWrapper($m->class, $m->name));
}
} else {
foreach ($class->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_PROTECTED) as $m) {
yield preg_replace('/^ @@.*/m', '', $m);
$defaults = [];
foreach ($m->getParameters() as $p) {
$defaults[$p->name] = $p->isDefaultValueAvailable() ? $p->getDefaultValue() : null;
}
yield print_r($defaults, true);
}
}
if ($class->isAbstract() || $class->isInterface() || $class->isTrait()) {
return;
}
if (interface_exists(EventSubscriberInterface::class, false) && $class->isSubclassOf(EventSubscriberInterface::class)) {
yield EventSubscriberInterface::class;
yield print_r(\call_user_func([$class->name, 'getSubscribedEvents']), true);
}
if (interface_exists(ServiceSubscriberInterface::class, false) && $class->isSubclassOf(ServiceSubscriberInterface::class)) {
yield ServiceSubscriberInterface::class;
yield print_r(\call_user_func([$class->name, 'getSubscribedServices']), true);
}
}
}
/**
* @internal
*/
class ReflectionMethodHhvmWrapper extends \ReflectionMethod
{
public function getParameters()
{
$params = [];
foreach (parent::getParameters() as $i => $p) {
$params[] = new ReflectionParameterHhvmWrapper([$this->class, $this->name], $i);
}
return $params;
}
}
/**
* @internal
*/
class ReflectionParameterHhvmWrapper extends \ReflectionParameter
{
public function getDefaultValue()
{
return [$this->isVariadic(), $this->isDefaultValueAvailable() ? parent::getDefaultValue() : null];
}
}

vendor/symfony/config/Resource/ReflectionClassResource.php line 185