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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\Config\Resource;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Messenger\Handler\MessageSubscriberInterface;
use Symfony\Contracts\Service\ServiceSubscriberInterface;
/**
* @author Nicolas Grekas <p@tchwork.com>
*
* @final
*/
class ReflectionClassResource implements SelfCheckingResourceInterface
{
private array $files = [];
private string $className;
private \ReflectionClass $classReflector;
private array $excludedVendors = [];
private string $hash;
public function __construct(\ReflectionClass $classReflector, array $excludedVendors = [])
{
$this->className = $classReflector->name;
$this->classReflector = $classReflector;
$this->excludedVendors = $excludedVendors;
}
public function isFresh(int $timestamp): bool
{
if (!isset($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 === $this->computeHash();
}
}
return true;
}
public function __toString(): string
{
return 'reflection.'.$this->className;
}
/**
* @internal
*/
public function __sleep(): array
{
if (!isset($this->hash)) {
$this->hash = $this->computeHash();
$this->loadFiles($this->classReflector);
}
return ['files', 'className', 'hash'];
}
private function loadFiles(\ReflectionClass $class): void
{
foreach ($class->getInterfaces() as $v) {
$this->loadFiles($v);
}
do {
$file = $class->getFileName();
if (false !== $file && is_file($file)) {
foreach ($this->excludedVendors as $vendor) {
if (str_starts_with($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(): string
{
try {
$this->classReflector ??= new \ReflectionClass($this->className);
} catch (\ReflectionException) {
// the class does not exist anymore
return false;
}
$hash = hash_init('xxh128');
foreach ($this->generateSignature($this->classReflector) as $info) {
hash_update($hash, $info);
}
return hash_final($hash);
}
private function generateSignature(\ReflectionClass $class): iterable
{
$attributes = [];
foreach ($class->getAttributes() as $a) {
$attributes[] = [$a->getName(), (string) $a];
}
yield print_r($attributes, true);
$attributes = [];
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 $p) {
foreach ($p->getAttributes() as $a) {
$attributes[] = [$a->getName(), (string) $a];
}
yield print_r($attributes, true);
$attributes = [];
yield $p->getDocComment();
yield $p->isDefault() ? '<default>' : '';
yield $p->isPublic() ? 'public' : 'protected';
yield $p->isStatic() ? 'static' : '';
yield '$'.$p->name;
yield print_r(isset($defaults[$p->name]) && !\is_object($defaults[$p->name]) ? $defaults[$p->name] : null, true);
}
}
foreach ($class->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_PROTECTED) as $m) {
foreach ($m->getAttributes() as $a) {
$attributes[] = [$a->getName(), (string) $a];
}
yield print_r($attributes, true);
$attributes = [];
$defaults = [];
foreach ($m->getParameters() as $p) {
foreach ($p->getAttributes() as $a) {
$attributes[] = [$a->getName(), (string) $a];
}
yield print_r($attributes, true);
$attributes = [];
if (!$p->isDefaultValueAvailable()) {
$defaults[$p->name] = null;
continue;
}
$defaults[$p->name] = (string) $p;
}
yield preg_replace('/^ @@.*/m', '', $m);
yield print_r($defaults, true);
}
if ($class->isAbstract() || $class->isInterface() || $class->isTrait()) {
return;
}
if (interface_exists(EventSubscriberInterface::class, false) && $class->isSubclassOf(EventSubscriberInterface::class)) {
yield EventSubscriberInterface::class;
yield print_r($class->name::getSubscribedEvents(), true);
}
if (interface_exists(MessageSubscriberInterface::class, false) && $class->isSubclassOf(MessageSubscriberInterface::class)) {
yield MessageSubscriberInterface::class;
foreach ($class->name::getHandledMessages() as $key => $value) {
yield $key.print_r($value, true);
}
}
if (interface_exists(ServiceSubscriberInterface::class, false) && $class->isSubclassOf(ServiceSubscriberInterface::class)) {
yield ServiceSubscriberInterface::class;
yield print_r($class->name::getSubscribedServices(), true);
}
}
}
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