Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\DependencyInjection\Loader;
Chris@0: 
Chris@0: use Symfony\Component\Config\Util\XmlUtils;
Chris@0: use Symfony\Component\DependencyInjection\Alias;
Chris@14: use Symfony\Component\DependencyInjection\Argument\BoundArgument;
Chris@14: use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
Chris@17: use Symfony\Component\DependencyInjection\Argument\TaggedIteratorArgument;
Chris@14: use Symfony\Component\DependencyInjection\ChildDefinition;
Chris@14: use Symfony\Component\DependencyInjection\ContainerBuilder;
Chris@17: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@17: use Symfony\Component\DependencyInjection\Definition;
Chris@0: use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
Chris@0: use Symfony\Component\DependencyInjection\Exception\RuntimeException;
Chris@17: use Symfony\Component\DependencyInjection\Reference;
Chris@0: use Symfony\Component\ExpressionLanguage\Expression;
Chris@0: 
Chris@0: /**
Chris@0:  * XmlFileLoader loads XML files service definitions.
Chris@0:  *
Chris@0:  * @author Fabien Potencier <fabien@symfony.com>
Chris@0:  */
Chris@0: class XmlFileLoader extends FileLoader
Chris@0: {
Chris@0:     const NS = 'http://symfony.com/schema/dic/services';
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function load($resource, $type = null)
Chris@0:     {
Chris@0:         $path = $this->locator->locate($resource);
Chris@0: 
Chris@0:         $xml = $this->parseFileToDOM($path);
Chris@0: 
Chris@14:         $this->container->fileExists($path);
Chris@14: 
Chris@14:         $defaults = $this->getServiceDefaults($xml, $path);
Chris@0: 
Chris@0:         // anonymous services
Chris@14:         $this->processAnonymousServices($xml, $path, $defaults);
Chris@0: 
Chris@0:         // imports
Chris@0:         $this->parseImports($xml, $path);
Chris@0: 
Chris@0:         // parameters
Chris@14:         $this->parseParameters($xml, $path);
Chris@0: 
Chris@0:         // extensions
Chris@0:         $this->loadFromExtensions($xml);
Chris@0: 
Chris@0:         // services
Chris@14:         try {
Chris@14:             $this->parseDefinitions($xml, $path, $defaults);
Chris@14:         } finally {
Chris@17:             $this->instanceof = [];
Chris@14:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function supports($resource, $type = null)
Chris@0:     {
Chris@17:         if (!\is_string($resource)) {
Chris@14:             return false;
Chris@14:         }
Chris@14: 
Chris@14:         if (null === $type && 'xml' === pathinfo($resource, PATHINFO_EXTENSION)) {
Chris@14:             return true;
Chris@14:         }
Chris@14: 
Chris@14:         return 'xml' === $type;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Parses parameters.
Chris@0:      *
Chris@0:      * @param \DOMDocument $xml
Chris@14:      * @param string       $file
Chris@0:      */
Chris@14:     private function parseParameters(\DOMDocument $xml, $file)
Chris@0:     {
Chris@0:         if ($parameters = $this->getChildren($xml->documentElement, 'parameters')) {
Chris@14:             $this->container->getParameterBag()->add($this->getArgumentsAsPhp($parameters[0], 'parameter', $file));
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Parses imports.
Chris@0:      *
Chris@0:      * @param \DOMDocument $xml
Chris@0:      * @param string       $file
Chris@0:      */
Chris@0:     private function parseImports(\DOMDocument $xml, $file)
Chris@0:     {
Chris@0:         $xpath = new \DOMXPath($xml);
Chris@0:         $xpath->registerNamespace('container', self::NS);
Chris@0: 
Chris@0:         if (false === $imports = $xpath->query('//container:imports/container:import')) {
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@17:         $defaultDirectory = \dirname($file);
Chris@0:         foreach ($imports as $import) {
Chris@0:             $this->setCurrentDir($defaultDirectory);
Chris@14:             $this->import($import->getAttribute('resource'), XmlUtils::phpize($import->getAttribute('type')) ?: null, (bool) XmlUtils::phpize($import->getAttribute('ignore-errors')), $file);
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Parses multiple definitions.
Chris@0:      *
Chris@0:      * @param \DOMDocument $xml
Chris@0:      * @param string       $file
Chris@0:      */
Chris@14:     private function parseDefinitions(\DOMDocument $xml, $file, $defaults)
Chris@0:     {
Chris@0:         $xpath = new \DOMXPath($xml);
Chris@0:         $xpath->registerNamespace('container', self::NS);
Chris@0: 
Chris@14:         if (false === $services = $xpath->query('//container:services/container:service|//container:services/container:prototype')) {
Chris@0:             return;
Chris@0:         }
Chris@17:         $this->setCurrentDir(\dirname($file));
Chris@0: 
Chris@17:         $this->instanceof = [];
Chris@14:         $this->isLoadingInstanceof = true;
Chris@14:         $instanceof = $xpath->query('//container:services/container:instanceof');
Chris@14:         foreach ($instanceof as $service) {
Chris@17:             $this->setDefinition((string) $service->getAttribute('id'), $this->parseDefinition($service, $file, []));
Chris@14:         }
Chris@14: 
Chris@14:         $this->isLoadingInstanceof = false;
Chris@0:         foreach ($services as $service) {
Chris@14:             if (null !== $definition = $this->parseDefinition($service, $file, $defaults)) {
Chris@14:                 if ('prototype' === $service->tagName) {
Chris@14:                     $this->registerClasses($definition, (string) $service->getAttribute('namespace'), (string) $service->getAttribute('resource'), (string) $service->getAttribute('exclude'));
Chris@14:                 } else {
Chris@14:                     $this->setDefinition((string) $service->getAttribute('id'), $definition);
Chris@14:                 }
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@14:      * Get service defaults.
Chris@14:      *
Chris@14:      * @return array
Chris@14:      */
Chris@14:     private function getServiceDefaults(\DOMDocument $xml, $file)
Chris@14:     {
Chris@14:         $xpath = new \DOMXPath($xml);
Chris@14:         $xpath->registerNamespace('container', self::NS);
Chris@14: 
Chris@14:         if (null === $defaultsNode = $xpath->query('//container:services/container:defaults')->item(0)) {
Chris@17:             return [];
Chris@14:         }
Chris@17:         $defaults = [
Chris@14:             'tags' => $this->getChildren($defaultsNode, 'tag'),
Chris@14:             'bind' => array_map(function ($v) { return new BoundArgument($v); }, $this->getArgumentsAsPhp($defaultsNode, 'bind', $file)),
Chris@17:         ];
Chris@14: 
Chris@14:         foreach ($defaults['tags'] as $tag) {
Chris@14:             if ('' === $tag->getAttribute('name')) {
Chris@14:                 throw new InvalidArgumentException(sprintf('The tag name for tag "<defaults>" in %s must be a non-empty string.', $file));
Chris@14:             }
Chris@14:         }
Chris@14: 
Chris@14:         if ($defaultsNode->hasAttribute('autowire')) {
Chris@14:             $defaults['autowire'] = XmlUtils::phpize($defaultsNode->getAttribute('autowire'));
Chris@14:         }
Chris@14:         if ($defaultsNode->hasAttribute('public')) {
Chris@14:             $defaults['public'] = XmlUtils::phpize($defaultsNode->getAttribute('public'));
Chris@14:         }
Chris@14:         if ($defaultsNode->hasAttribute('autoconfigure')) {
Chris@14:             $defaults['autoconfigure'] = XmlUtils::phpize($defaultsNode->getAttribute('autoconfigure'));
Chris@14:         }
Chris@14: 
Chris@14:         return $defaults;
Chris@14:     }
Chris@14: 
Chris@14:     /**
Chris@0:      * Parses an individual Definition.
Chris@0:      *
Chris@0:      * @param \DOMElement $service
Chris@0:      * @param string      $file
Chris@14:      * @param array       $defaults
Chris@0:      *
Chris@0:      * @return Definition|null
Chris@0:      */
Chris@14:     private function parseDefinition(\DOMElement $service, $file, array $defaults)
Chris@0:     {
Chris@0:         if ($alias = $service->getAttribute('alias')) {
Chris@0:             $this->validateAlias($service, $file);
Chris@0: 
Chris@14:             $this->container->setAlias((string) $service->getAttribute('id'), $alias = new Alias($alias));
Chris@0:             if ($publicAttr = $service->getAttribute('public')) {
Chris@14:                 $alias->setPublic(XmlUtils::phpize($publicAttr));
Chris@14:             } elseif (isset($defaults['public'])) {
Chris@14:                 $alias->setPublic($defaults['public']);
Chris@0:             }
Chris@0: 
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@14:         if ($this->isLoadingInstanceof) {
Chris@14:             $definition = new ChildDefinition('');
Chris@14:         } elseif ($parent = $service->getAttribute('parent')) {
Chris@14:             if (!empty($this->instanceof)) {
Chris@14:                 throw new InvalidArgumentException(sprintf('The service "%s" cannot use the "parent" option in the same file where "instanceof" configuration is defined as using both is not supported. Move your child definitions to a separate file.', $service->getAttribute('id')));
Chris@14:             }
Chris@14: 
Chris@14:             foreach ($defaults as $k => $v) {
Chris@14:                 if ('tags' === $k) {
Chris@14:                     // since tags are never inherited from parents, there is no confusion
Chris@14:                     // thus we can safely add them as defaults to ChildDefinition
Chris@14:                     continue;
Chris@14:                 }
Chris@14:                 if ('bind' === $k) {
Chris@14:                     if ($defaults['bind']) {
Chris@14:                         throw new InvalidArgumentException(sprintf('Bound values on service "%s" cannot be inherited from "defaults" when a "parent" is set. Move your child definitions to a separate file.', $service->getAttribute('id')));
Chris@14:                     }
Chris@14: 
Chris@14:                     continue;
Chris@14:                 }
Chris@14:                 if (!$service->hasAttribute($k)) {
Chris@14:                     throw new InvalidArgumentException(sprintf('Attribute "%s" on service "%s" cannot be inherited from "defaults" when a "parent" is set. Move your child definitions to a separate file or define this attribute explicitly.', $k, $service->getAttribute('id')));
Chris@14:                 }
Chris@14:             }
Chris@14: 
Chris@14:             $definition = new ChildDefinition($parent);
Chris@0:         } else {
Chris@0:             $definition = new Definition();
Chris@14: 
Chris@14:             if (isset($defaults['public'])) {
Chris@14:                 $definition->setPublic($defaults['public']);
Chris@14:             }
Chris@14:             if (isset($defaults['autowire'])) {
Chris@14:                 $definition->setAutowired($defaults['autowire']);
Chris@14:             }
Chris@14:             if (isset($defaults['autoconfigure'])) {
Chris@14:                 $definition->setAutoconfigured($defaults['autoconfigure']);
Chris@14:             }
Chris@14: 
Chris@17:             $definition->setChanges([]);
Chris@0:         }
Chris@0: 
Chris@17:         foreach (['class', 'public', 'shared', 'synthetic', 'lazy', 'abstract'] as $key) {
Chris@0:             if ($value = $service->getAttribute($key)) {
Chris@0:                 $method = 'set'.$key;
Chris@0:                 $definition->$method(XmlUtils::phpize($value));
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if ($value = $service->getAttribute('autowire')) {
Chris@0:             $definition->setAutowired(XmlUtils::phpize($value));
Chris@0:         }
Chris@0: 
Chris@14:         if ($value = $service->getAttribute('autoconfigure')) {
Chris@14:             if (!$definition instanceof ChildDefinition) {
Chris@14:                 $definition->setAutoconfigured(XmlUtils::phpize($value));
Chris@14:             } elseif ($value = XmlUtils::phpize($value)) {
Chris@14:                 throw new InvalidArgumentException(sprintf('The service "%s" cannot have a "parent" and also have "autoconfigure". Try setting autoconfigure="false" for the service.', $service->getAttribute('id')));
Chris@14:             }
Chris@14:         }
Chris@14: 
Chris@0:         if ($files = $this->getChildren($service, 'file')) {
Chris@0:             $definition->setFile($files[0]->nodeValue);
Chris@0:         }
Chris@0: 
Chris@0:         if ($deprecated = $this->getChildren($service, 'deprecated')) {
Chris@0:             $definition->setDeprecated(true, $deprecated[0]->nodeValue ?: null);
Chris@0:         }
Chris@0: 
Chris@14:         $definition->setArguments($this->getArgumentsAsPhp($service, 'argument', $file, false, $definition instanceof ChildDefinition));
Chris@14:         $definition->setProperties($this->getArgumentsAsPhp($service, 'property', $file));
Chris@0: 
Chris@0:         if ($factories = $this->getChildren($service, 'factory')) {
Chris@0:             $factory = $factories[0];
Chris@0:             if ($function = $factory->getAttribute('function')) {
Chris@0:                 $definition->setFactory($function);
Chris@0:             } else {
Chris@14:                 if ($childService = $factory->getAttribute('service')) {
Chris@0:                     $class = new Reference($childService, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE);
Chris@0:                 } else {
Chris@14:                     $class = $factory->hasAttribute('class') ? $factory->getAttribute('class') : null;
Chris@0:                 }
Chris@0: 
Chris@17:                 $definition->setFactory([$class, $factory->getAttribute('method')]);
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if ($configurators = $this->getChildren($service, 'configurator')) {
Chris@0:             $configurator = $configurators[0];
Chris@0:             if ($function = $configurator->getAttribute('function')) {
Chris@0:                 $definition->setConfigurator($function);
Chris@0:             } else {
Chris@14:                 if ($childService = $configurator->getAttribute('service')) {
Chris@0:                     $class = new Reference($childService, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE);
Chris@0:                 } else {
Chris@0:                     $class = $configurator->getAttribute('class');
Chris@0:                 }
Chris@0: 
Chris@17:                 $definition->setConfigurator([$class, $configurator->getAttribute('method')]);
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         foreach ($this->getChildren($service, 'call') as $call) {
Chris@14:             $definition->addMethodCall($call->getAttribute('method'), $this->getArgumentsAsPhp($call, 'argument', $file));
Chris@0:         }
Chris@0: 
Chris@14:         $tags = $this->getChildren($service, 'tag');
Chris@14: 
Chris@14:         if (!empty($defaults['tags'])) {
Chris@14:             $tags = array_merge($tags, $defaults['tags']);
Chris@14:         }
Chris@14: 
Chris@14:         foreach ($tags as $tag) {
Chris@17:             $parameters = [];
Chris@0:             foreach ($tag->attributes as $name => $node) {
Chris@0:                 if ('name' === $name) {
Chris@0:                     continue;
Chris@0:                 }
Chris@0: 
Chris@18:                 if (false !== strpos($name, '-') && false === strpos($name, '_') && !\array_key_exists($normalizedName = str_replace('-', '_', $name), $parameters)) {
Chris@0:                     $parameters[$normalizedName] = XmlUtils::phpize($node->nodeValue);
Chris@0:                 }
Chris@0:                 // keep not normalized key
Chris@0:                 $parameters[$name] = XmlUtils::phpize($node->nodeValue);
Chris@0:             }
Chris@0: 
Chris@0:             if ('' === $tag->getAttribute('name')) {
Chris@0:                 throw new InvalidArgumentException(sprintf('The tag name for service "%s" in %s must be a non-empty string.', (string) $service->getAttribute('id'), $file));
Chris@0:             }
Chris@0: 
Chris@0:             $definition->addTag($tag->getAttribute('name'), $parameters);
Chris@0:         }
Chris@0: 
Chris@0:         foreach ($this->getChildren($service, 'autowiring-type') as $type) {
Chris@0:             $definition->addAutowiringType($type->textContent);
Chris@0:         }
Chris@0: 
Chris@14:         $bindings = $this->getArgumentsAsPhp($service, 'bind', $file);
Chris@14:         if (isset($defaults['bind'])) {
Chris@14:             // deep clone, to avoid multiple process of the same instance in the passes
Chris@14:             $bindings = array_merge(unserialize(serialize($defaults['bind'])), $bindings);
Chris@14:         }
Chris@14:         if ($bindings) {
Chris@14:             $definition->setBindings($bindings);
Chris@14:         }
Chris@14: 
Chris@0:         if ($value = $service->getAttribute('decorates')) {
Chris@0:             $renameId = $service->hasAttribute('decoration-inner-name') ? $service->getAttribute('decoration-inner-name') : null;
Chris@0:             $priority = $service->hasAttribute('decoration-priority') ? $service->getAttribute('decoration-priority') : 0;
Chris@0:             $definition->setDecoratedService($value, $renameId, $priority);
Chris@0:         }
Chris@0: 
Chris@0:         return $definition;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Parses a XML file to a \DOMDocument.
Chris@0:      *
Chris@0:      * @param string $file Path to a file
Chris@0:      *
Chris@0:      * @return \DOMDocument
Chris@0:      *
Chris@0:      * @throws InvalidArgumentException When loading of XML file returns error
Chris@0:      */
Chris@0:     private function parseFileToDOM($file)
Chris@0:     {
Chris@0:         try {
Chris@17:             $dom = XmlUtils::loadFile($file, [$this, 'validateSchema']);
Chris@0:         } catch (\InvalidArgumentException $e) {
Chris@17:             throw new InvalidArgumentException(sprintf('Unable to parse file "%s": %s', $file, $e->getMessage()), $e->getCode(), $e);
Chris@0:         }
Chris@0: 
Chris@0:         $this->validateExtensions($dom, $file);
Chris@0: 
Chris@0:         return $dom;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Processes anonymous services.
Chris@0:      *
Chris@0:      * @param \DOMDocument $xml
Chris@0:      * @param string       $file
Chris@14:      * @param array        $defaults
Chris@0:      */
Chris@14:     private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
Chris@0:     {
Chris@17:         $definitions = [];
Chris@0:         $count = 0;
Chris@17:         $suffix = '~'.ContainerBuilder::hash($file);
Chris@0: 
Chris@0:         $xpath = new \DOMXPath($xml);
Chris@0:         $xpath->registerNamespace('container', self::NS);
Chris@0: 
Chris@0:         // anonymous services as arguments/properties
Chris@14:         if (false !== $nodes = $xpath->query('//container:argument[@type="service"][not(@id)]|//container:property[@type="service"][not(@id)]|//container:bind[not(@id)]|//container:factory[not(@service)]|//container:configurator[not(@service)]')) {
Chris@0:             foreach ($nodes as $node) {
Chris@14:                 if ($services = $this->getChildren($node, 'service')) {
Chris@14:                     // give it a unique name
Chris@17:                     $id = sprintf('%d_%s', ++$count, preg_replace('/^.*\\\\/', '', $services[0]->getAttribute('class')).$suffix);
Chris@14:                     $node->setAttribute('id', $id);
Chris@14:                     $node->setAttribute('service', $id);
Chris@0: 
Chris@17:                     $definitions[$id] = [$services[0], $file, false];
Chris@0:                     $services[0]->setAttribute('id', $id);
Chris@0: 
Chris@0:                     // anonymous services are always private
Chris@0:                     // we could not use the constant false here, because of XML parsing
Chris@0:                     $services[0]->setAttribute('public', 'false');
Chris@0:                 }
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         // anonymous services "in the wild"
Chris@0:         if (false !== $nodes = $xpath->query('//container:services/container:service[not(@id)]')) {
Chris@0:             foreach ($nodes as $node) {
Chris@14:                 @trigger_error(sprintf('Top-level anonymous services are deprecated since Symfony 3.4, the "id" attribute will be required in version 4.0 in %s at line %d.', $file, $node->getLineNo()), E_USER_DEPRECATED);
Chris@14: 
Chris@0:                 // give it a unique name
Chris@14:                 $id = sprintf('%d_%s', ++$count, preg_replace('/^.*\\\\/', '', $node->getAttribute('class')).$suffix);
Chris@0:                 $node->setAttribute('id', $id);
Chris@17:                 $definitions[$id] = [$node, $file, true];
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         // resolve definitions
Chris@14:         uksort($definitions, 'strnatcmp');
Chris@14:         foreach (array_reverse($definitions) as $id => list($domElement, $file, $wild)) {
Chris@17:             if (null !== $definition = $this->parseDefinition($domElement, $file, $wild ? $defaults : [])) {
Chris@14:                 $this->setDefinition($id, $definition);
Chris@0:             }
Chris@0: 
Chris@0:             if (true === $wild) {
Chris@0:                 $tmpDomElement = new \DOMElement('_services', null, self::NS);
Chris@0:                 $domElement->parentNode->replaceChild($tmpDomElement, $domElement);
Chris@0:                 $tmpDomElement->setAttribute('id', $id);
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns arguments as valid php types.
Chris@0:      *
Chris@0:      * @param \DOMElement $node
Chris@0:      * @param string      $name
Chris@14:      * @param string      $file
Chris@0:      * @param bool        $lowercase
Chris@0:      *
Chris@0:      * @return mixed
Chris@0:      */
Chris@14:     private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase = true, $isChildDefinition = false)
Chris@0:     {
Chris@17:         $arguments = [];
Chris@0:         foreach ($this->getChildren($node, $name) as $arg) {
Chris@0:             if ($arg->hasAttribute('name')) {
Chris@0:                 $arg->setAttribute('key', $arg->getAttribute('name'));
Chris@0:             }
Chris@0: 
Chris@14:             // this is used by ChildDefinition to overwrite a specific
Chris@0:             // argument of the parent definition
Chris@0:             if ($arg->hasAttribute('index')) {
Chris@14:                 $key = ($isChildDefinition ? 'index_' : '').$arg->getAttribute('index');
Chris@0:             } elseif (!$arg->hasAttribute('key')) {
Chris@0:                 // Append an empty argument, then fetch its key to overwrite it later
Chris@0:                 $arguments[] = null;
Chris@0:                 $keys = array_keys($arguments);
Chris@0:                 $key = array_pop($keys);
Chris@0:             } else {
Chris@0:                 $key = $arg->getAttribute('key');
Chris@14:             }
Chris@0: 
Chris@14:             $onInvalid = $arg->getAttribute('on-invalid');
Chris@14:             $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
Chris@14:             if ('ignore' == $onInvalid) {
Chris@14:                 $invalidBehavior = ContainerInterface::IGNORE_ON_INVALID_REFERENCE;
Chris@14:             } elseif ('ignore_uninitialized' == $onInvalid) {
Chris@14:                 $invalidBehavior = ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE;
Chris@14:             } elseif ('null' == $onInvalid) {
Chris@14:                 $invalidBehavior = ContainerInterface::NULL_ON_INVALID_REFERENCE;
Chris@0:             }
Chris@0: 
Chris@0:             switch ($arg->getAttribute('type')) {
Chris@0:                 case 'service':
Chris@17:                     if ('' === $arg->getAttribute('id')) {
Chris@14:                         throw new InvalidArgumentException(sprintf('Tag "<%s>" with type="service" has no or empty "id" attribute in "%s".', $name, $file));
Chris@14:                     }
Chris@14:                     if ($arg->hasAttribute('strict')) {
Chris@14:                         @trigger_error(sprintf('The "strict" attribute used when referencing the "%s" service is deprecated since Symfony 3.3 and will be removed in 4.0.', $arg->getAttribute('id')), E_USER_DEPRECATED);
Chris@0:                     }
Chris@0: 
Chris@0:                     $arguments[$key] = new Reference($arg->getAttribute('id'), $invalidBehavior);
Chris@0:                     break;
Chris@0:                 case 'expression':
Chris@14:                     if (!class_exists(Expression::class)) {
Chris@14:                         throw new \LogicException(sprintf('The type="expression" attribute cannot be used without the ExpressionLanguage component. Try running "composer require symfony/expression-language".'));
Chris@14:                     }
Chris@14: 
Chris@0:                     $arguments[$key] = new Expression($arg->nodeValue);
Chris@0:                     break;
Chris@0:                 case 'collection':
Chris@14:                     $arguments[$key] = $this->getArgumentsAsPhp($arg, $name, $file, false);
Chris@14:                     break;
Chris@14:                 case 'iterator':
Chris@14:                     $arg = $this->getArgumentsAsPhp($arg, $name, $file, false);
Chris@14:                     try {
Chris@14:                         $arguments[$key] = new IteratorArgument($arg);
Chris@14:                     } catch (InvalidArgumentException $e) {
Chris@14:                         throw new InvalidArgumentException(sprintf('Tag "<%s>" with type="iterator" only accepts collections of type="service" references in "%s".', $name, $file));
Chris@14:                     }
Chris@14:                     break;
Chris@14:                 case 'tagged':
Chris@14:                     if (!$arg->getAttribute('tag')) {
Chris@14:                         throw new InvalidArgumentException(sprintf('Tag "<%s>" with type="tagged" has no or empty "tag" attribute in "%s".', $name, $file));
Chris@14:                     }
Chris@14:                     $arguments[$key] = new TaggedIteratorArgument($arg->getAttribute('tag'));
Chris@0:                     break;
Chris@0:                 case 'string':
Chris@0:                     $arguments[$key] = $arg->nodeValue;
Chris@0:                     break;
Chris@0:                 case 'constant':
Chris@17:                     $arguments[$key] = \constant(trim($arg->nodeValue));
Chris@0:                     break;
Chris@0:                 default:
Chris@0:                     $arguments[$key] = XmlUtils::phpize($arg->nodeValue);
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return $arguments;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get child elements by name.
Chris@0:      *
Chris@0:      * @param \DOMNode $node
Chris@0:      * @param mixed    $name
Chris@0:      *
Chris@17:      * @return \DOMElement[]
Chris@0:      */
Chris@0:     private function getChildren(\DOMNode $node, $name)
Chris@0:     {
Chris@17:         $children = [];
Chris@0:         foreach ($node->childNodes as $child) {
Chris@14:             if ($child instanceof \DOMElement && $child->localName === $name && self::NS === $child->namespaceURI) {
Chris@0:                 $children[] = $child;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return $children;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Validates a documents XML schema.
Chris@0:      *
Chris@0:      * @param \DOMDocument $dom
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      *
Chris@0:      * @throws RuntimeException When extension references a non-existent XSD file
Chris@0:      */
Chris@0:     public function validateSchema(\DOMDocument $dom)
Chris@0:     {
Chris@17:         $schemaLocations = ['http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd')];
Chris@0: 
Chris@0:         if ($element = $dom->documentElement->getAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'schemaLocation')) {
Chris@0:             $items = preg_split('/\s+/', $element);
Chris@17:             for ($i = 0, $nb = \count($items); $i < $nb; $i += 2) {
Chris@0:                 if (!$this->container->hasExtension($items[$i])) {
Chris@0:                     continue;
Chris@0:                 }
Chris@0: 
Chris@0:                 if (($extension = $this->container->getExtension($items[$i])) && false !== $extension->getXsdValidationBasePath()) {
Chris@18:                     $ns = $extension->getNamespace();
Chris@18:                     $path = str_replace([$ns, str_replace('http://', 'https://', $ns)], str_replace('\\', '/', $extension->getXsdValidationBasePath()).'/', $items[$i + 1]);
Chris@0: 
Chris@0:                     if (!is_file($path)) {
Chris@17:                         throw new RuntimeException(sprintf('Extension "%s" references a non-existent XSD file "%s"', \get_class($extension), $path));
Chris@0:                     }
Chris@0: 
Chris@0:                     $schemaLocations[$items[$i]] = $path;
Chris@0:                 }
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@17:         $tmpfiles = [];
Chris@0:         $imports = '';
Chris@0:         foreach ($schemaLocations as $namespace => $location) {
Chris@0:             $parts = explode('/', $location);
Chris@14:             $locationstart = 'file:///';
Chris@0:             if (0 === stripos($location, 'phar://')) {
Chris@14:                 $tmpfile = tempnam(sys_get_temp_dir(), 'symfony');
Chris@0:                 if ($tmpfile) {
Chris@0:                     copy($location, $tmpfile);
Chris@0:                     $tmpfiles[] = $tmpfile;
Chris@0:                     $parts = explode('/', str_replace('\\', '/', $tmpfile));
Chris@14:                 } else {
Chris@14:                     array_shift($parts);
Chris@14:                     $locationstart = 'phar:///';
Chris@0:                 }
Chris@0:             }
Chris@17:             $drive = '\\' === \DIRECTORY_SEPARATOR ? array_shift($parts).'/' : '';
Chris@14:             $location = $locationstart.$drive.implode('/', array_map('rawurlencode', $parts));
Chris@0: 
Chris@0:             $imports .= sprintf('  <xsd:import namespace="%s" schemaLocation="%s" />'."\n", $namespace, $location);
Chris@0:         }
Chris@0: 
Chris@0:         $source = <<<EOF
Chris@0: <?xml version="1.0" encoding="utf-8" ?>
Chris@0: <xsd:schema xmlns="http://symfony.com/schema"
Chris@0:     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
Chris@0:     targetNamespace="http://symfony.com/schema"
Chris@0:     elementFormDefault="qualified">
Chris@0: 
Chris@0:     <xsd:import namespace="http://www.w3.org/XML/1998/namespace"/>
Chris@0: $imports
Chris@0: </xsd:schema>
Chris@0: EOF
Chris@0:         ;
Chris@0: 
Chris@0:         $disableEntities = libxml_disable_entity_loader(false);
Chris@0:         $valid = @$dom->schemaValidateSource($source);
Chris@0:         libxml_disable_entity_loader($disableEntities);
Chris@0: 
Chris@0:         foreach ($tmpfiles as $tmpfile) {
Chris@0:             @unlink($tmpfile);
Chris@0:         }
Chris@0: 
Chris@0:         return $valid;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Validates an alias.
Chris@0:      *
Chris@0:      * @param \DOMElement $alias
Chris@0:      * @param string      $file
Chris@0:      */
Chris@0:     private function validateAlias(\DOMElement $alias, $file)
Chris@0:     {
Chris@0:         foreach ($alias->attributes as $name => $node) {
Chris@17:             if (!\in_array($name, ['alias', 'id', 'public'])) {
Chris@0:                 @trigger_error(sprintf('Using the attribute "%s" is deprecated for the service "%s" which is defined as an alias in "%s". Allowed attributes for service aliases are "alias", "id" and "public". The XmlFileLoader will raise an exception in Symfony 4.0, instead of silently ignoring unsupported attributes.', $name, $alias->getAttribute('id'), $file), E_USER_DEPRECATED);
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         foreach ($alias->childNodes as $child) {
Chris@14:             if ($child instanceof \DOMElement && self::NS === $child->namespaceURI) {
Chris@0:                 @trigger_error(sprintf('Using the element "%s" is deprecated for the service "%s" which is defined as an alias in "%s". The XmlFileLoader will raise an exception in Symfony 4.0, instead of silently ignoring unsupported elements.', $child->localName, $alias->getAttribute('id'), $file), E_USER_DEPRECATED);
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Validates an extension.
Chris@0:      *
Chris@0:      * @param \DOMDocument $dom
Chris@0:      * @param string       $file
Chris@0:      *
Chris@0:      * @throws InvalidArgumentException When no extension is found corresponding to a tag
Chris@0:      */
Chris@0:     private function validateExtensions(\DOMDocument $dom, $file)
Chris@0:     {
Chris@0:         foreach ($dom->documentElement->childNodes as $node) {
Chris@0:             if (!$node instanceof \DOMElement || 'http://symfony.com/schema/dic/services' === $node->namespaceURI) {
Chris@0:                 continue;
Chris@0:             }
Chris@0: 
Chris@0:             // can it be handled by an extension?
Chris@0:             if (!$this->container->hasExtension($node->namespaceURI)) {
Chris@0:                 $extensionNamespaces = array_filter(array_map(function ($ext) { return $ext->getNamespace(); }, $this->container->getExtensions()));
Chris@17:                 throw new InvalidArgumentException(sprintf('There is no extension able to load the configuration for "%s" (in %s). Looked for namespace "%s", found %s', $node->tagName, $file, $node->namespaceURI, $extensionNamespaces ? sprintf('"%s"', implode('", "', $extensionNamespaces)) : 'none'));
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Loads from an extension.
Chris@0:      *
Chris@0:      * @param \DOMDocument $xml
Chris@0:      */
Chris@0:     private function loadFromExtensions(\DOMDocument $xml)
Chris@0:     {
Chris@0:         foreach ($xml->documentElement->childNodes as $node) {
Chris@14:             if (!$node instanceof \DOMElement || self::NS === $node->namespaceURI) {
Chris@0:                 continue;
Chris@0:             }
Chris@0: 
Chris@0:             $values = static::convertDomElementToArray($node);
Chris@17:             if (!\is_array($values)) {
Chris@17:                 $values = [];
Chris@0:             }
Chris@0: 
Chris@0:             $this->container->loadFromExtension($node->namespaceURI, $values);
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@14:      * Converts a \DOMElement object to a PHP array.
Chris@0:      *
Chris@0:      * The following rules applies during the conversion:
Chris@0:      *
Chris@0:      *  * Each tag is converted to a key value or an array
Chris@0:      *    if there is more than one "value"
Chris@0:      *
Chris@0:      *  * The content of a tag is set under a "value" key (<foo>bar</foo>)
Chris@0:      *    if the tag also has some nested tags
Chris@0:      *
Chris@0:      *  * The attributes are converted to keys (<foo foo="bar"/>)
Chris@0:      *
Chris@0:      *  * The nested-tags are converted to keys (<foo><foo>bar</foo></foo>)
Chris@0:      *
Chris@14:      * @param \DOMElement $element A \DOMElement instance
Chris@0:      *
Chris@0:      * @return array A PHP array
Chris@0:      */
Chris@0:     public static function convertDomElementToArray(\DOMElement $element)
Chris@0:     {
Chris@0:         return XmlUtils::convertDomElementToArray($element);
Chris@0:     }
Chris@0: }