215 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			215 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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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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namespace Symfony\Component\DependencyInjection\LazyProxy\PhpDumper;
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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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 * @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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    public function isProxyCandidate(Definition $definition, ?bool &$asGhostObject = null, ?string $id = null): bool
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    {
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        $asGhostObject = false;
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        if ($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 ?? $definition->getClass()));
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            }
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            return true;
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        }
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        if (!$definition->isLazy()) {
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            return false;
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        }
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        if (!($class = $definition->getClass()) || !(class_exists($class) || interface_exists($class, false))) {
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            return false;
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        }
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        if ($definition->getFactory()) {
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            return true;
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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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        if (\PHP_VERSION_ID < 80400) {
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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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            return true;
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        }
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        try {
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            $asGhostObject = (bool) (new \ReflectionClass($class))->newLazyGhost(static fn () => null);
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        } catch (\Error $e) {
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            if (__FILE__ !== $e->getFile()) {
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                throw $e;
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            }
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        }
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        return true;
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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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        $instantiation = 'return';
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        if ($definition->isShared()) {
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            $instantiation .= \sprintf(' $container->%s[%s] =', $definition->isPublic() && !$definition->isPrivate() ? 'services' : 'privates', var_export($id, true));
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        }
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        $asGhostObject = str_contains($factoryCode, '$proxy');
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        $proxyClass = $this->getProxyClass($definition, $asGhostObject);
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        if (!$asGhostObject) {
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            if ($definition->getClass() === $proxyClass) {
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                return <<<EOF
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                        if (true === \$lazyLoad) {
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                            $instantiation new \ReflectionClass('$proxyClass')->newLazyProxy(static fn () => $factoryCode);
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                        }
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                EOF;
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            }
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            return <<<EOF
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                    if (true === \$lazyLoad) {
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                        $instantiation \$container->createProxy('$proxyClass', static fn () => \\$proxyClass::createLazyProxy(static fn () => $factoryCode));
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                    }
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            EOF;
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        }
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        if (\PHP_VERSION_ID < 80400) {
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            $factoryCode = \sprintf('static fn ($proxy) => %s', $factoryCode);
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            return <<<EOF
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                    if (true === \$lazyLoad) {
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                        $instantiation \$container->createProxy('$proxyClass', static fn () => \\$proxyClass::createLazyGhost($factoryCode));
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                    }
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            EOF;
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        }
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        $factoryCode = \sprintf('static function ($proxy) use ($container) { %s; }', $factoryCode);
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        return <<<EOF
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                if (true === \$lazyLoad) {
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                    $instantiation new \ReflectionClass('$proxyClass')->newLazyGhost($factoryCode);
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                }
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        EOF;
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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, $class);
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        if ($asGhostObject) {
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            if (\PHP_VERSION_ID >= 80400) {
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                return '';
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            }
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            try {
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                return ($class?->isReadOnly() ? 'readonly ' : '').'class '.$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, $e);
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            }
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        }
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        if ($definition->getClass() === $proxyClass) {
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            return '';
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        }
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        $interfaces = [];
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        if ($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 ('object' !== $definition->getClass() && !is_a($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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            $class = 1 === \count($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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            $class = null;
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        }
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        try {
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            return ($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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    public function getProxyClass(Definition $definition, bool $asGhostObject, ?\ReflectionClass &$class = null): string
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    {
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        $class = 'object' !== $definition->getClass() ? $definition->getClass() : 'stdClass';
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        $class = new \ReflectionClass($class);
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        if (\PHP_VERSION_ID < 80400) {
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            return preg_replace('/^.*\\\\/', '', $definition->getClass())
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                .($asGhostObject ? 'Ghost' : 'Proxy')
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                .ucfirst(substr(hash('xxh128', $this->salt.'+'.$class->name.'+'.serialize($definition->getTag('proxy'))), -7));
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        }
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        if ($asGhostObject) {
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            return $class->name;
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        }
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        if (!$definition->hasTag('proxy') && !$class->isAbstract()) {
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            $parent = $class;
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            do {
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                $extendsInternalClass = $parent->isInternal();
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            } while (!$extendsInternalClass && $parent = $parent->getParentClass());
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            if (!$extendsInternalClass) {
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                return $class->name;
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            }
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        }
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        return preg_replace('/^.*\\\\/', '', $definition->getClass()).'Proxy'
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            .ucfirst(substr(hash('xxh128', $this->salt.'+'.$class->name.'+'.serialize($definition->getTag('proxy'))), -7));
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    }
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}
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