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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\LogicException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\ExpressionLanguage;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\ExpressionLanguage\Expression;
/**
* @author Nicolas Grekas <p@tchwork.com>
*/
abstract class AbstractRecursivePass implements CompilerPassInterface
{
/**
* @var ContainerBuilder
*/
protected $container;
protected $currentId;
private $processExpressions = false;
private $expressionLanguage;
private $inExpression = false;
/**
* {@inheritdoc}
*/
public function process(ContainerBuilder $container)
{
$this->container = $container;
try {
$this->processValue($container->getDefinitions(), true);
} finally {
$this->container = null;
}
}
protected function enableExpressionProcessing()
{
$this->processExpressions = true;
}
protected function inExpression(bool $reset = true): bool
{
$inExpression = $this->inExpression;
if ($reset) {
$this->inExpression = false;
}
return $inExpression;
}
/**
* Processes a value found in a definition tree.
*
* @param mixed $value
* @param bool $isRoot
*
* @return mixed The processed value
*/
protected function processValue($value, $isRoot = false)
{
if (\is_array($value)) {
foreach ($value as $k => $v) {
if ($isRoot) {
$this->currentId = $k;
}
if ($v !== $processedValue = $this->processValue($v, $isRoot)) {
$value[$k] = $processedValue;
}
}
} elseif ($value instanceof ArgumentInterface) {
$value->setValues($this->processValue($value->getValues()));
} elseif ($value instanceof Expression && $this->processExpressions) {
$this->getExpressionLanguage()->compile((string) $value, ['this' => 'container']);
} elseif ($value instanceof Definition) {
$value->setArguments($this->processValue($value->getArguments()));
$value->setProperties($this->processValue($value->getProperties()));
$value->setMethodCalls($this->processValue($value->getMethodCalls()));
$changes = $value->getChanges();
if (isset($changes['factory'])) {
$value->setFactory($this->processValue($value->getFactory()));
}
if (isset($changes['configurator'])) {
$value->setConfigurator($this->processValue($value->getConfigurator()));
}
}
return $value;
}
/**
* @param Definition $definition
* @param bool $required
*
* @return \ReflectionFunctionAbstract|null
*
* @throws RuntimeException
*/
protected function getConstructor(Definition $definition, $required)
{
if (\is_string($factory = $definition->getFactory())) {
if (!\function_exists($factory)) {
throw new RuntimeException(sprintf('Invalid service "%s": function "%s" does not exist.', $this->currentId, $factory));
}
$r = new \ReflectionFunction($factory);
if (false !== $r->getFileName() && file_exists($r->getFileName())) {
$this->container->fileExists($r->getFileName());
}
return $r;
}
if ($factory) {
list($class, $method) = $factory;
if ($class instanceof Reference) {
$class = $this->container->findDefinition((string) $class)->getClass();
} elseif (null === $class) {
$class = $definition->getClass();
}
if ('__construct' === $method) {
throw new RuntimeException(sprintf('Invalid service "%s": "__construct()" cannot be used as a factory method.', $this->currentId));
}
return $this->getReflectionMethod(new Definition($class), $method);
}
$class = $definition->getClass();
try {
if (!$r = $this->container->getReflectionClass($class)) {
throw new RuntimeException(sprintf('Invalid service "%s": class "%s" does not exist.', $this->currentId, $class));
}
} catch (\ReflectionException $e) {
throw new RuntimeException(sprintf('Invalid service "%s": %s.', $this->currentId, lcfirst(rtrim($e->getMessage(), '.'))));
}
if (!$r = $r->getConstructor()) {
if ($required) {
throw new RuntimeException(sprintf('Invalid service "%s": class%s has no constructor.', $this->currentId, sprintf($class !== $this->currentId ? ' "%s"' : '', $class)));
}
} elseif (!$r->isPublic()) {
throw new RuntimeException(sprintf('Invalid service "%s": %s must be public.', $this->currentId, sprintf($class !== $this->currentId ? 'constructor of class "%s"' : 'its constructor', $class)));
}
return $r;
}
/**
* @param Definition $definition
* @param string $method
*
* @throws RuntimeException
*
* @return \ReflectionFunctionAbstract
*/
protected function getReflectionMethod(Definition $definition, $method)
{
if ('__construct' === $method) {
return $this->getConstructor($definition, true);
}
if (!$class = $definition->getClass()) {
throw new RuntimeException(sprintf('Invalid service "%s": the class is not set.', $this->currentId));
}
if (!$r = $this->container->getReflectionClass($class)) {
throw new RuntimeException(sprintf('Invalid service "%s": class "%s" does not exist.', $this->currentId, $class));
}
if (!$r->hasMethod($method)) {
throw new RuntimeException(sprintf('Invalid service "%s": method "%s()" does not exist.', $this->currentId, $class !== $this->currentId ? $class.'::'.$method : $method));
}
$r = $r->getMethod($method);
if (!$r->isPublic()) {
throw new RuntimeException(sprintf('Invalid service "%s": method "%s()" must be public.', $this->currentId, $class !== $this->currentId ? $class.'::'.$method : $method));
}
return $r;
}
private function getExpressionLanguage()
{
if (null === $this->expressionLanguage) {
if (!class_exists(ExpressionLanguage::class)) {
throw new LogicException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
}
$providers = $this->container->getExpressionLanguageProviders();
$this->expressionLanguage = new ExpressionLanguage(null, $providers, function ($arg) {
if ('""' === substr_replace($arg, '', 1, -1)) {
$id = stripcslashes(substr($arg, 1, -1));
$this->inExpression = true;
$arg = $this->processValue(new Reference($id));
$this->inExpression = false;
if (!$arg instanceof Reference) {
throw new RuntimeException(sprintf('"%s::processValue()" must return a Reference when processing an expression, %s returned for service("%s").', \get_class($this), \is_object($arg) ? \get_class($arg) : \gettype($arg), $id));
}
$arg = sprintf('"%s"', $arg);
}
return sprintf('$this->get(%s)', $arg);
});
}
return $this->expressionLanguage;
}
}
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