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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\ChildDefinition;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Exception\ExceptionInterface;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
/**
* This replaces all ChildDefinition instances with their equivalent fully
* merged Definition instance.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
* @author Nicolas Grekas <p@tchwork.com>
*/
class ResolveChildDefinitionsPass extends AbstractRecursivePass
{
private $currentPath;
protected function processValue($value, $isRoot = false)
{
if (!$value instanceof Definition) {
return parent::processValue($value, $isRoot);
}
if ($isRoot) {
// yes, we are specifically fetching the definition from the
// container to ensure we are not operating on stale data
$value = $this->container->getDefinition($this->currentId);
}
if ($value instanceof ChildDefinition) {
$this->currentPath = [];
$value = $this->resolveDefinition($value);
if ($isRoot) {
$this->container->setDefinition($this->currentId, $value);
}
}
return parent::processValue($value, $isRoot);
}
/**
* Resolves the definition.
*
* @throws RuntimeException When the definition is invalid
*/
private function resolveDefinition(ChildDefinition $definition): Definition
{
try {
return $this->doResolveDefinition($definition);
} catch (ServiceCircularReferenceException $e) {
throw $e;
} catch (ExceptionInterface $e) {
$r = new \ReflectionProperty($e, 'message');
$r->setAccessible(true);
$r->setValue($e, sprintf('Service "%s": %s', $this->currentId, $e->getMessage()));
throw $e;
}
}
private function doResolveDefinition(ChildDefinition $definition): Definition
{
if (!$this->container->has($parent = $definition->getParent())) {
throw new RuntimeException(sprintf('Parent definition "%s" does not exist.', $parent));
}
$searchKey = array_search($parent, $this->currentPath);
$this->currentPath[] = $parent;
if (false !== $searchKey) {
throw new ServiceCircularReferenceException($parent, \array_slice($this->currentPath, $searchKey));
}
$parentDef = $this->container->findDefinition($parent);
if ($parentDef instanceof ChildDefinition) {
$id = $this->currentId;
$this->currentId = $parent;
$parentDef = $this->resolveDefinition($parentDef);
$this->container->setDefinition($parent, $parentDef);
$this->currentId = $id;
}
$this->container->log($this, sprintf('Resolving inheritance for "%s" (parent: %s).', $this->currentId, $parent));
$def = new Definition();
// merge in parent definition
// purposely ignored attributes: abstract, shared, tags, autoconfigured
$def->setClass($parentDef->getClass());
$def->setArguments($parentDef->getArguments());
$def->setMethodCalls($parentDef->getMethodCalls());
$def->setProperties($parentDef->getProperties());
if ($parentDef->isDeprecated()) {
$def->setDeprecated(true, $parentDef->getDeprecationMessage('%service_id%'));
}
$def->setFactory($parentDef->getFactory());
$def->setConfigurator($parentDef->getConfigurator());
$def->setFile($parentDef->getFile());
$def->setPublic($parentDef->isPublic());
$def->setLazy($parentDef->isLazy());
$def->setAutowired($parentDef->isAutowired());
$def->setChanges($parentDef->getChanges());
$def->setBindings($definition->getBindings() + $parentDef->getBindings());
$def->setSynthetic($definition->isSynthetic());
// overwrite with values specified in the decorator
$changes = $definition->getChanges();
if (isset($changes['class'])) {
$def->setClass($definition->getClass());
}
if (isset($changes['factory'])) {
$def->setFactory($definition->getFactory());
}
if (isset($changes['configurator'])) {
$def->setConfigurator($definition->getConfigurator());
}
if (isset($changes['file'])) {
$def->setFile($definition->getFile());
}
if (isset($changes['public'])) {
$def->setPublic($definition->isPublic());
} else {
$def->setPrivate($definition->isPrivate() || $parentDef->isPrivate());
}
if (isset($changes['lazy'])) {
$def->setLazy($definition->isLazy());
}
if (isset($changes['deprecated'])) {
$def->setDeprecated($definition->isDeprecated(), $definition->getDeprecationMessage('%service_id%'));
}
if (isset($changes['autowired'])) {
$def->setAutowired($definition->isAutowired());
}
if (isset($changes['shared'])) {
$def->setShared($definition->isShared());
}
if (isset($changes['decorated_service'])) {
$decoratedService = $definition->getDecoratedService();
if (null === $decoratedService) {
$def->setDecoratedService($decoratedService);
} else {
$def->setDecoratedService($decoratedService[0], $decoratedService[1], $decoratedService[2], $decoratedService[3] ?? ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE);
}
}
// merge arguments
foreach ($definition->getArguments() as $k => $v) {
if (is_numeric($k)) {
$def->addArgument($v);
} elseif (str_starts_with($k, 'index_')) {
$def->replaceArgument((int) substr($k, \strlen('index_')), $v);
} else {
$def->setArgument($k, $v);
}
}
// merge properties
foreach ($definition->getProperties() as $k => $v) {
$def->setProperty($k, $v);
}
// append method calls
if ($calls = $definition->getMethodCalls()) {
$def->setMethodCalls(array_merge($def->getMethodCalls(), $calls));
}
$def->addError($parentDef);
$def->addError($definition);
// these attributes are always taken from the child
$def->setAbstract($definition->isAbstract());
$def->setTags($definition->getTags());
// autoconfigure is never taken from parent (on purpose)
// and it's not legal on an instanceof
$def->setAutoconfigured($definition->isAutoconfigured());
if (!$def->hasTag('proxy')) {
foreach ($parentDef->getTag('proxy') as $v) {
$def->addTag('proxy', $v);
}
}
return $def;
}
}
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