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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\ContainerBuilder;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
use Symfony\Component\DependencyInjection\Reference;
/**
* Inline service definitions where this is possible.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class InlineServiceDefinitionsPass extends AbstractRecursivePass implements RepeatablePassInterface
{
private $analyzingPass;
private $repeatedPass;
private $cloningIds = [];
private $connectedIds = [];
private $notInlinedIds = [];
private $inlinedIds = [];
private $graph;
public function __construct(AnalyzeServiceReferencesPass $analyzingPass = null)
{
$this->analyzingPass = $analyzingPass;
}
/**
* {@inheritdoc}
*/
public function setRepeatedPass(RepeatedPass $repeatedPass)
{
@trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2.', __METHOD__), E_USER_DEPRECATED);
$this->repeatedPass = $repeatedPass;
}
public function process(ContainerBuilder $container)
{
$this->container = $container;
if ($this->analyzingPass) {
$analyzedContainer = new ContainerBuilder();
$analyzedContainer->setAliases($container->getAliases());
$analyzedContainer->setDefinitions($container->getDefinitions());
foreach ($container->getExpressionLanguageProviders() as $provider) {
$analyzedContainer->addExpressionLanguageProvider($provider);
}
} else {
$analyzedContainer = $container;
}
try {
$remainingInlinedIds = [];
$this->connectedIds = $this->notInlinedIds = $container->getDefinitions();
do {
if ($this->analyzingPass) {
$analyzedContainer->setDefinitions(array_intersect_key($analyzedContainer->getDefinitions(), $this->connectedIds));
$this->analyzingPass->process($analyzedContainer);
}
$this->graph = $analyzedContainer->getCompiler()->getServiceReferenceGraph();
$notInlinedIds = $this->notInlinedIds;
$this->connectedIds = $this->notInlinedIds = $this->inlinedIds = [];
foreach ($analyzedContainer->getDefinitions() as $id => $definition) {
if (!$this->graph->hasNode($id)) {
continue;
}
foreach ($this->graph->getNode($id)->getOutEdges() as $edge) {
if (isset($notInlinedIds[$edge->getSourceNode()->getId()])) {
$this->currentId = $id;
$this->processValue($definition, true);
break;
}
}
}
foreach ($this->inlinedIds as $id => $isPublicOrNotShared) {
if ($isPublicOrNotShared) {
$remainingInlinedIds[$id] = $id;
} else {
$container->removeDefinition($id);
$analyzedContainer->removeDefinition($id);
}
}
} while ($this->inlinedIds && $this->analyzingPass);
if ($this->inlinedIds && $this->repeatedPass) {
$this->repeatedPass->setRepeat();
}
foreach ($remainingInlinedIds as $id) {
$definition = $container->getDefinition($id);
if (!$definition->isShared() && !$definition->isPublic()) {
$container->removeDefinition($id);
}
}
} finally {
$this->container = null;
$this->connectedIds = $this->notInlinedIds = $this->inlinedIds = [];
$this->graph = null;
}
}
/**
* {@inheritdoc}
*/
protected function processValue($value, $isRoot = false)
{
if ($value instanceof ArgumentInterface) {
// Reference found in ArgumentInterface::getValues() are not inlineable
return $value;
}
if ($value instanceof Definition && $this->cloningIds) {
if ($value->isShared()) {
return $value;
}
$value = clone $value;
}
if (!$value instanceof Reference) {
return parent::processValue($value, $isRoot);
} elseif (!$this->container->hasDefinition($id = (string) $value)) {
return $value;
}
$definition = $this->container->getDefinition($id);
if (!$this->isInlineableDefinition($id, $definition)) {
return $value;
}
$this->container->log($this, sprintf('Inlined service "%s" to "%s".', $id, $this->currentId));
$this->inlinedIds[$id] = $definition->isPublic() || !$definition->isShared();
$this->notInlinedIds[$this->currentId] = true;
if ($definition->isShared()) {
return $definition;
}
if (isset($this->cloningIds[$id])) {
$ids = array_keys($this->cloningIds);
$ids[] = $id;
throw new ServiceCircularReferenceException($id, \array_slice($ids, array_search($id, $ids)));
}
$this->cloningIds[$id] = true;
try {
return $this->processValue($definition);
} finally {
unset($this->cloningIds[$id]);
}
}
/**
* Checks if the definition is inlineable.
*
* @return bool If the definition is inlineable
*/
private function isInlineableDefinition($id, Definition $definition)
{
if ($definition->hasErrors() || $definition->isDeprecated() || $definition->isLazy() || $definition->isSynthetic()) {
return false;
}
if (!$definition->isShared()) {
if (!$this->graph->hasNode($id)) {
return true;
}
foreach ($this->graph->getNode($id)->getInEdges() as $edge) {
$srcId = $edge->getSourceNode()->getId();
$this->connectedIds[$srcId] = true;
if ($edge->isWeak() || $edge->isLazy()) {
return false;
}
}
return true;
}
if ($definition->isPublic()) {
return false;
}
if (!$this->graph->hasNode($id)) {
return true;
}
if ($this->currentId == $id) {
return false;
}
$this->connectedIds[$id] = true;
$srcIds = [];
$srcCount = 0;
$isReferencedByConstructor = false;
foreach ($this->graph->getNode($id)->getInEdges() as $edge) {
$isReferencedByConstructor = $isReferencedByConstructor || $edge->isReferencedByConstructor();
$srcId = $edge->getSourceNode()->getId();
$this->connectedIds[$srcId] = true;
if ($edge->isWeak() || $edge->isLazy()) {
return false;
}
$srcIds[$srcId] = true;
++$srcCount;
}
if (1 !== \count($srcIds)) {
$this->notInlinedIds[$id] = true;
return false;
}
if ($srcCount > 1 && \is_array($factory = $definition->getFactory()) && ($factory[0] instanceof Reference || $factory[0] instanceof Definition)) {
return false;
}
return $this->container->getDefinition($srcId)->isShared();
}
}
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