202 lines
		
	
	
		
			6.6 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			202 lines
		
	
	
		
			6.6 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\Compiler;
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use Symfony\Component\DependencyInjection\Argument\ArgumentInterface;
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use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\ContainerInterface;
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use Symfony\Component\DependencyInjection\Definition;
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use Symfony\Component\DependencyInjection\Exception\LogicException;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\ExpressionLanguage\Expression;
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/**
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 * Run this pass before passes that need to know more about the relation of
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 * your services.
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 *
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 * This class will populate the ServiceReferenceGraph with information. You can
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 * retrieve the graph in other passes from the compiler.
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 *
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 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
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 * @author Nicolas Grekas <p@tchwork.com>
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 */
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class AnalyzeServiceReferencesPass extends AbstractRecursivePass
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{
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    protected bool $skipScalars = true;
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    private ServiceReferenceGraph $graph;
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    private ?Definition $currentDefinition = null;
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    private bool $lazy;
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    private bool $byConstructor;
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    private bool $byFactory;
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    private array $definitions;
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    private array $aliases;
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    /**
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     * @param bool $onlyConstructorArguments Sets this Service Reference pass to ignore method calls
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     */
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    public function __construct(
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        private bool $onlyConstructorArguments = false,
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        private bool $hasProxyDumper = true,
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    ) {
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        $this->enableExpressionProcessing();
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    }
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    /**
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     * Processes a ContainerBuilder object to populate the service reference graph.
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     */
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    public function process(ContainerBuilder $container): void
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    {
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        $this->container = $container;
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        $this->graph = $container->getCompiler()->getServiceReferenceGraph();
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        $this->graph->clear();
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        $this->lazy = false;
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        $this->byConstructor = false;
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        $this->byFactory = false;
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        $this->definitions = $container->getDefinitions();
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        $this->aliases = $container->getAliases();
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        foreach ($this->aliases as $id => $alias) {
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            $targetId = $this->getDefinitionId((string) $alias);
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            $this->graph->connect($id, $alias, $targetId, null !== $targetId ? $this->container->getDefinition($targetId) : null, null);
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        }
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        try {
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            parent::process($container);
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        } finally {
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            $this->aliases = $this->definitions = [];
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        }
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    }
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    protected function processValue(mixed $value, bool $isRoot = false): mixed
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    {
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        $lazy = $this->lazy;
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        $inExpression = $this->inExpression();
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        if ($value instanceof ArgumentInterface) {
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            $this->lazy = !$this->byFactory || !$value instanceof IteratorArgument;
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            parent::processValue($value->getValues());
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            $this->lazy = $lazy;
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            return $value;
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        }
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        if ($value instanceof Reference) {
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            $targetId = $this->getDefinitionId((string) $value);
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            $targetDefinition = null !== $targetId ? $this->container->getDefinition($targetId) : null;
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            $this->graph->connect(
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                $this->currentId,
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                $this->currentDefinition,
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                $targetId,
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                $targetDefinition,
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                $value,
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                $this->lazy || ($this->hasProxyDumper && $targetDefinition?->isLazy()),
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                ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE === $value->getInvalidBehavior(),
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                $this->byConstructor
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            );
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            if ($inExpression) {
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                $this->graph->connect(
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                    '.internal.reference_in_expression',
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                    null,
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                    $targetId,
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                    $targetDefinition,
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                    $value,
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                    $this->lazy || $targetDefinition?->isLazy(),
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                    true
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                );
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            }
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            return $value;
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        }
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        if (!$value instanceof Definition) {
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            return parent::processValue($value, $isRoot);
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        }
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        if ($isRoot) {
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            if ($value->isSynthetic() || $value->isAbstract()) {
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                return $value;
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            }
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            $this->currentDefinition = $value;
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        } elseif ($this->currentDefinition === $value) {
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            return $value;
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        }
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        $this->lazy = false;
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        $byConstructor = $this->byConstructor;
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        $this->byConstructor = $isRoot || $byConstructor;
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        $byFactory = $this->byFactory;
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        $this->byFactory = true;
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        if (\is_string($factory = $value->getFactory()) && str_starts_with($factory, '@=')) {
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            if (!class_exists(Expression::class)) {
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                throw new LogicException('Expressions cannot be used in service factories without the ExpressionLanguage component. Try running "composer require symfony/expression-language".');
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            }
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            $factory = new Expression(substr($factory, 2));
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        }
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        $this->processValue($factory);
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        $this->byFactory = $byFactory;
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        $this->processValue($value->getArguments());
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        $properties = $value->getProperties();
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        $setters = $value->getMethodCalls();
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        // Any references before a "wither" are part of the constructor-instantiation graph
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        $lastWitherIndex = null;
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        foreach ($setters as $k => $call) {
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            if ($call[2] ?? false) {
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                $lastWitherIndex = $k;
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            }
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        }
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        if (null !== $lastWitherIndex) {
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            $this->processValue($properties);
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            $setters = $properties = [];
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            foreach ($value->getMethodCalls() as $k => $call) {
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                if (null === $lastWitherIndex) {
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                    $setters[] = $call;
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                    continue;
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                }
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                if ($lastWitherIndex === $k) {
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                    $lastWitherIndex = null;
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                }
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                $this->processValue($call);
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            }
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        }
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        $this->byConstructor = $byConstructor;
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        if (!$this->onlyConstructorArguments) {
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            $this->processValue($properties);
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            $this->processValue($setters);
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            $this->processValue($value->getConfigurator());
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        }
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        $this->lazy = $lazy;
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        return $value;
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    }
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    private function getDefinitionId(string $id): ?string
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    {
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        while (isset($this->aliases[$id])) {
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            $id = (string) $this->aliases[$id];
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        }
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        return isset($this->definitions[$id]) ? $id : null;
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    }
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}
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