Symfony Profiler

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

vendor/symfony/dependency-injection/Loader/XmlFileLoader.php line 379