155 lines
		
	
	
		
			5.8 KiB
		
	
	
	
		
			PHP
		
	
	
			
		
		
	
	
			155 lines
		
	
	
		
			5.8 KiB
		
	
	
	
		
			PHP
		
	
	
| <?php
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| 
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| /*
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|  * This file is part of the Symfony package.
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|  *
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|  * (c) Fabien Potencier <fabien@symfony.com>
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|  *
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|  * For the full copyright and license information, please view the LICENSE
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|  * file that was distributed with this source code.
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|  */
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| 
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| namespace Symfony\Component\DependencyInjection\LazyProxy\PhpDumper;
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| 
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| use Symfony\Component\DependencyInjection\Definition;
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| use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
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| use Symfony\Component\VarExporter\Exception\LogicException;
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| use Symfony\Component\VarExporter\ProxyHelper;
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| 
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| /**
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|  * @author Nicolas Grekas <p@tchwork.com>
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|  */
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| final class LazyServiceDumper implements DumperInterface
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| {
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|     public function __construct(
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|         private string $salt = '',
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|     ) {
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|     }
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| 
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|     public function isProxyCandidate(Definition $definition, bool &$asGhostObject = null, string $id = null): bool
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|     {
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|         $asGhostObject = false;
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| 
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|         if ($definition->hasTag('proxy')) {
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|             if (!$definition->isLazy()) {
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|                 throw new InvalidArgumentException(sprintf('Invalid definition for service "%s": setting the "proxy" tag on a service requires it to be "lazy".', $id ?? $definition->getClass()));
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|             }
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| 
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|             return true;
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|         }
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| 
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|         if (!$definition->isLazy()) {
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|             return false;
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|         }
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| 
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|         if (!($class = $definition->getClass()) || !(class_exists($class) || interface_exists($class, false))) {
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|             return false;
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|         }
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| 
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|         if ($definition->getFactory()) {
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|             return true;
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|         }
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| 
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|         foreach ($definition->getMethodCalls() as $call) {
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|             if ($call[2] ?? false) {
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|                 return true;
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|             }
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|         }
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| 
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|         try {
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|             $asGhostObject = (bool) ProxyHelper::generateLazyGhost(new \ReflectionClass($class));
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|         } catch (LogicException) {
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|         }
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| 
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|         return true;
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|     }
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| 
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|     public function getProxyFactoryCode(Definition $definition, string $id, string $factoryCode): string
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|     {
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|         $instantiation = 'return';
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| 
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|         if ($definition->isShared()) {
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|             $instantiation .= sprintf(' $this->%s[%s] =', $definition->isPublic() && !$definition->isPrivate() ? 'services' : 'privates', var_export($id, true));
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|         }
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| 
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|         $asGhostObject = str_contains($factoryCode, '$proxy');
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|         $proxyClass = $this->getProxyClass($definition, $asGhostObject);
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| 
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|         if (!$asGhostObject) {
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|             return <<<EOF
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|                     if (true === \$lazyLoad) {
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|                         $instantiation \$this->createProxy('$proxyClass', fn () => \\$proxyClass::createLazyProxy(fn () => $factoryCode));
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|                     }
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| 
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| 
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|             EOF;
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|         }
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| 
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|         if (preg_match('/^\$this->\w++\(\$proxy\)$/', $factoryCode)) {
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|             $factoryCode = substr_replace($factoryCode, '(...)', -8);
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|         } else {
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|             $factoryCode = sprintf('fn ($proxy) => %s', $factoryCode);
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|         }
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| 
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|         return <<<EOF
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|                 if (true === \$lazyLoad) {
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|                     $instantiation \$this->createProxy('$proxyClass', fn () => \\$proxyClass::createLazyGhost($factoryCode));
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|                 }
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| 
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| 
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|         EOF;
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|     }
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| 
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|     public function getProxyCode(Definition $definition, string $id = null): string
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|     {
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|         if (!$this->isProxyCandidate($definition, $asGhostObject, $id)) {
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|             throw new InvalidArgumentException(sprintf('Cannot instantiate lazy proxy for service "%s".', $id ?? $definition->getClass()));
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|         }
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|         $proxyClass = $this->getProxyClass($definition, $asGhostObject, $class);
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| 
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|         if ($asGhostObject) {
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|             try {
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|                 return 'class '.$proxyClass.ProxyHelper::generateLazyGhost($class);
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|             } catch (LogicException $e) {
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|                 throw new InvalidArgumentException(sprintf('Cannot generate lazy ghost for service "%s".', $id ?? $definition->getClass()), 0, $e);
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|             }
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|         }
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|         $interfaces = [];
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| 
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|         if ($definition->hasTag('proxy')) {
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|             foreach ($definition->getTag('proxy') as $tag) {
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|                 if (!isset($tag['interface'])) {
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|                     throw new InvalidArgumentException(sprintf('Invalid definition for service "%s": the "interface" attribute is missing on a "proxy" tag.', $id ?? $definition->getClass()));
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|                 }
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|                 if (!interface_exists($tag['interface']) && !class_exists($tag['interface'], false)) {
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|                     throw new InvalidArgumentException(sprintf('Invalid definition for service "%s": several "proxy" tags found but "%s" is not an interface.', $id ?? $definition->getClass(), $tag['interface']));
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|                 }
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|                 if (!is_a($class->name, $tag['interface'], true)) {
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|                     throw new InvalidArgumentException(sprintf('Invalid "proxy" tag for service "%s": class "%s" doesn\'t implement "%s".', $id ?? $definition->getClass(), $definition->getClass(), $tag['interface']));
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|                 }
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|                 $interfaces[] = new \ReflectionClass($tag['interface']);
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|             }
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| 
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|             $class = 1 === \count($interfaces) && !$interfaces[0]->isInterface() ? array_pop($interfaces) : null;
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|         } elseif ($class->isInterface()) {
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|             $interfaces = [$class];
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|             $class = null;
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|         }
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| 
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|         try {
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|             return (\PHP_VERSION_ID >= 80200 && $class?->isReadOnly() ? 'readonly ' : '').'class '.$proxyClass.ProxyHelper::generateLazyProxy($class, $interfaces);
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|         } catch (LogicException $e) {
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|             throw new InvalidArgumentException(sprintf('Cannot generate lazy proxy for service "%s".', $id ?? $definition->getClass()), 0, $e);
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|         }
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|     }
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| 
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|     public function getProxyClass(Definition $definition, bool $asGhostObject, \ReflectionClass &$class = null): string
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|     {
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|         $class = new \ReflectionClass($definition->getClass());
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| 
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|         return preg_replace('/^.*\\\\/', '', $class->name)
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|             .($asGhostObject ? 'Ghost' : 'Proxy')
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|             .ucfirst(substr(hash('sha256', $this->salt.'+'.$class->name), -7));
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|     }
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| }
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