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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\DependencyInjection\Compiler;
use Symfony\Component\DependencyInjection\Argument\ArgumentInterface;
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;
/**
* Run this pass before passes that need to know more about the relation of
* your services.
*
* This class will populate the ServiceReferenceGraph with information. You can
* retrieve the graph in other passes from the compiler.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
* @author Nicolas Grekas <p@tchwork.com>
*/
class AnalyzeServiceReferencesPass extends AbstractRecursivePass
{
private $graph;
private $currentDefinition;
private $onlyConstructorArguments;
private $hasProxyDumper;
private $lazy;
private $byConstructor;
private $byFactory;
private $definitions;
private $aliases;
/**
* @param bool $onlyConstructorArguments Sets this Service Reference pass to ignore method calls
*/
public function __construct(bool $onlyConstructorArguments = false, bool $hasProxyDumper = true)
{
$this->onlyConstructorArguments = $onlyConstructorArguments;
$this->hasProxyDumper = $hasProxyDumper;
$this->enableExpressionProcessing();
}
/**
* Processes a ContainerBuilder object to populate the service reference graph.
*/
public function process(ContainerBuilder $container)
{
$this->container = $container;
$this->graph = $container->getCompiler()->getServiceReferenceGraph();
$this->graph->clear();
$this->lazy = false;
$this->byConstructor = false;
$this->byFactory = false;
$this->definitions = $container->getDefinitions();
$this->aliases = $container->getAliases();
foreach ($this->aliases as $id => $alias) {
$targetId = $this->getDefinitionId((string) $alias);
$this->graph->connect($id, $alias, $targetId, null !== $targetId ? $this->container->getDefinition($targetId) : null, null);
}
try {
parent::process($container);
} finally {
$this->aliases = $this->definitions = [];
}
}
protected function processValue($value, bool $isRoot = false)
{
$lazy = $this->lazy;
$inExpression = $this->inExpression();
if ($value instanceof ArgumentInterface) {
$this->lazy = !$this->byFactory || !$value instanceof IteratorArgument;
parent::processValue($value->getValues());
$this->lazy = $lazy;
return $value;
}
if ($value instanceof Reference) {
$targetId = $this->getDefinitionId((string) $value);
$targetDefinition = null !== $targetId ? $this->container->getDefinition($targetId) : null;
$this->graph->connect(
$this->currentId,
$this->currentDefinition,
$targetId,
$targetDefinition,
$value,
$this->lazy || ($this->hasProxyDumper && $targetDefinition && $targetDefinition->isLazy()),
ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE === $value->getInvalidBehavior(),
$this->byConstructor
);
if ($inExpression) {
$this->graph->connect(
'.internal.reference_in_expression',
null,
$targetId,
$targetDefinition,
$value,
$this->lazy || ($targetDefinition && $targetDefinition->isLazy()),
true
);
}
return $value;
}
if (!$value instanceof Definition) {
return parent::processValue($value, $isRoot);
}
if ($isRoot) {
if ($value->isSynthetic() || $value->isAbstract()) {
return $value;
}
$this->currentDefinition = $value;
} elseif ($this->currentDefinition === $value) {
return $value;
}
$this->lazy = false;
$byConstructor = $this->byConstructor;
$this->byConstructor = $isRoot || $byConstructor;
$byFactory = $this->byFactory;
$this->byFactory = true;
$this->processValue($value->getFactory());
$this->byFactory = $byFactory;
$this->processValue($value->getArguments());
$properties = $value->getProperties();
$setters = $value->getMethodCalls();
// Any references before a "wither" are part of the constructor-instantiation graph
$lastWitherIndex = null;
foreach ($setters as $k => $call) {
if ($call[2] ?? false) {
$lastWitherIndex = $k;
}
}
if (null !== $lastWitherIndex) {
$this->processValue($properties);
$setters = $properties = [];
foreach ($value->getMethodCalls() as $k => $call) {
if (null === $lastWitherIndex) {
$setters[] = $call;
continue;
}
if ($lastWitherIndex === $k) {
$lastWitherIndex = null;
}
$this->processValue($call);
}
}
$this->byConstructor = $byConstructor;
if (!$this->onlyConstructorArguments) {
$this->processValue($properties);
$this->processValue($setters);
$this->processValue($value->getConfigurator());
}
$this->lazy = $lazy;
return $value;
}
private function getDefinitionId(string $id): ?string
{
while (isset($this->aliases[$id])) {
$id = (string) $this->aliases[$id];
}
return isset($this->definitions[$id]) ? $id : null;
}
}