781 lines
22 KiB
PHP
781 lines
22 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection;
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use Symfony\Component\DependencyInjection\Compiler\Compiler;
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use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
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use Symfony\Component\DependencyInjection\Compiler\PassConfig;
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use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
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use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
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use Symfony\Component\Config\Resource\FileResource;
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use Symfony\Component\Config\Resource\ResourceInterface;
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/**
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* ContainerBuilder is a DI container that provides an API to easily describe services.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class ContainerBuilder extends Container implements TaggedContainerInterface
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{
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private $extensions = array();
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private $extensionsByNs = array();
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private $definitions = array();
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private $aliases = array();
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private $resources = array();
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private $extensionConfigs = array();
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private $injectors = array();
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private $compiler;
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/**
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* Registers an extension.
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*
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* @param ExtensionInterface $extension An extension instance
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*/
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public function registerExtension(ExtensionInterface $extension)
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{
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$this->extensions[$extension->getAlias()] = $extension;
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if (false !== $extension->getNamespace()) {
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$this->extensionsByNs[$extension->getNamespace()] = $extension;
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}
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}
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/**
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* Returns an extension by alias or namespace.
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*
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* @param string $name An alias or a namespace
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*
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* @return ExtensionInterface An extension instance
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*/
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public function getExtension($name)
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{
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if (isset($this->extensions[$name])) {
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return $this->extensions[$name];
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}
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if (isset($this->extensionsByNs[$name])) {
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return $this->extensionsByNs[$name];
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}
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throw new \LogicException(sprintf('Container extension "%s" is not registered', $name));
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}
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/**
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* Returns all registered extensions.
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*
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* @return array An array of ExtensionInterface
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*/
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public function getExtensions()
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{
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return $this->extensions;
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}
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/**
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* Checks if we have an extension.
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*
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* @param string $name The name of the extension
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* @return Boolean If the extension exists
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*/
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public function hasExtension($name)
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{
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return isset($this->extensions[$name]) || isset($this->extensionsByNs[$name]);
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}
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/**
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* Returns an array of resources loaded to build this configuration.
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*
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* @return ResourceInterface[] An array of resources
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*/
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public function getResources()
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{
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return array_unique($this->resources);
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}
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/**
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* Adds a resource for this configuration.
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*
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* @param ResourceInterface $resource A resource instance
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*
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* @return ContainerBuilder The current instance
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*/
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public function addResource(ResourceInterface $resource)
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{
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$this->resources[] = $resource;
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return $this;
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}
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/**
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* Adds the object class hierarchy as resources.
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*
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* @param object $object An object instance
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*/
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public function addObjectResource($object)
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{
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$parent = new \ReflectionObject($object);
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do {
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$this->addResource(new FileResource($parent->getFileName()));
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} while ($parent = $parent->getParentClass());
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}
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/**
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* Loads the configuration for an extension.
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*
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* @param string $extension The extension alias or namespace
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* @param array $values An array of values that customizes the extension
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*
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* @return ContainerBuilder The current instance
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*/
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public function loadFromExtension($extension, array $values = array())
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{
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if (true === $this->isFrozen()) {
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throw new \LogicException('Cannot load from an extension on a frozen container.');
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}
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$namespace = $this->getExtension($extension)->getAlias();
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$this->extensionConfigs[$namespace][] = $values;
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return $this;
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}
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/**
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* Adds a compiler pass.
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*
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* @param CompilerPassInterface $pass A compiler pass
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* @param string $type The type of compiler pass
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*/
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public function addCompilerPass(CompilerPassInterface $pass, $type = PassConfig::TYPE_BEFORE_OPTIMIZATION)
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{
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if (null === $this->compiler) {
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$this->compiler = new Compiler();
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}
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$this->compiler->addPass($pass, $type);
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$this->addObjectResource($pass);
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}
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/**
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* Returns the compiler pass config which can then be modified.
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*
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* @return PassConfig The compiler pass config
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*/
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public function getCompilerPassConfig()
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{
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if (null === $this->compiler) {
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$this->compiler = new Compiler();
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}
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return $this->compiler->getPassConfig();
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}
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/**
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* Returns the compiler.
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*
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* @return Compiler The compiler
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*/
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public function getCompiler()
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{
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if (null === $this->compiler) {
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$this->compiler = new Compiler();
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}
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return $this->compiler;
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}
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/**
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* Returns all Scopes.
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*
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* @return array An array of scopes
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*/
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public function getScopes()
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{
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return $this->scopes;
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}
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/**
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* Returns all Scope children.
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*
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* @return array An array of scope children.
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*/
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public function getScopeChildren()
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{
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return $this->scopeChildren;
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}
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/**
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* Sets a service.
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*
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* @param string $id The service identifier
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* @param object $service The service instance
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* @param string $scope The scope
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*
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* @throws BadMethodCallException
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*/
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public function set($id, $service, $scope = self::SCOPE_CONTAINER)
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{
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if ($this->isFrozen()) {
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throw new \BadMethodCallException('Setting service on a frozen container is not allowed');
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}
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$id = strtolower($id);
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unset($this->definitions[$id], $this->aliases[$id]);
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parent::set($id, $service, $scope);
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}
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/**
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* Removes a service definition.
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*
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* @param string $id The service identifier
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*/
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public function removeDefinition($id)
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{
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unset($this->definitions[strtolower($id)]);
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}
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/**
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* Returns true if the given service is defined.
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*
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* @param string $id The service identifier
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*
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* @return Boolean true if the service is defined, false otherwise
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*/
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public function has($id)
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{
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$id = strtolower($id);
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return isset($this->definitions[$id]) || isset($this->aliases[$id]) || parent::has($id);
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}
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/**
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* Gets a service.
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*
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* @param string $id The service identifier
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* @param integer $invalidBehavior The behavior when the service does not exist
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*
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* @return object The associated service
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*
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* @throws \InvalidArgumentException if the service is not defined
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* @throws \LogicException if the service has a circular reference to itself
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*
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* @see Reference
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*/
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public function get($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE)
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{
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$id = strtolower($id);
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try {
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return parent::get($id, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE);
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} catch (\InvalidArgumentException $e) {
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if (isset($this->loading[$id])) {
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throw new \LogicException(sprintf('The service "%s" has a circular reference to itself.', $id), 0, $e);
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}
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if (!$this->hasDefinition($id) && isset($this->aliases[$id])) {
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return $this->get($this->aliases[$id]);
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}
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try {
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$definition = $this->getDefinition($id);
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} catch (\InvalidArgumentException $e) {
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if (ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $invalidBehavior) {
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return null;
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}
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throw $e;
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}
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$this->loading[$id] = true;
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$service = $this->createService($definition, $id);
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unset($this->loading[$id]);
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return $service;
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}
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}
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/**
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* Merges a ContainerBuilder with the current ContainerBuilder configuration.
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*
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* Service definitions overrides the current defined ones.
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*
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* But for parameters, they are overridden by the current ones. It allows
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* the parameters passed to the container constructor to have precedence
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* over the loaded ones.
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*
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* $container = new ContainerBuilder(array('foo' => 'bar'));
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* $loader = new LoaderXXX($container);
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* $loader->load('resource_name');
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* $container->register('foo', new stdClass());
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*
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* In the above example, even if the loaded resource defines a foo
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* parameter, the value will still be 'bar' as defined in the ContainerBuilder
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* constructor.
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*
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* @param ContainerBuilder $container The ContainerBuilder instance to merge.
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* @throws \LogicException when this ContainerBuilder is frozen
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*/
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public function merge(ContainerBuilder $container)
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{
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if (true === $this->isFrozen()) {
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throw new \LogicException('Cannot merge on a frozen container.');
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}
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$this->addDefinitions($container->getDefinitions());
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$this->addAliases($container->getAliases());
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$this->getParameterBag()->add($container->getParameterBag()->all());
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foreach ($container->getResources() as $resource) {
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$this->addResource($resource);
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}
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foreach ($this->extensions as $name => $extension) {
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if (!isset($this->extensionConfigs[$name])) {
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$this->extensionConfigs[$name] = array();
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}
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$this->extensionConfigs[$name] = array_merge($this->extensionConfigs[$name], $container->getExtensionConfig($name));
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}
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}
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/**
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* Returns the configuration array for the given extension.
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*
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* @param string $name The name of the extension
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*
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* @return array An array of configuration
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*/
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public function getExtensionConfig($name)
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{
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if (!isset($this->extensionConfigs[$name])) {
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$this->extensionConfigs[$name] = array();
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}
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return $this->extensionConfigs[$name];
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}
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/**
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* Compiles the container.
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*
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* This method passes the container to compiler
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* passes whose job is to manipulate and optimize
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* the container.
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*
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* The main compiler passes roughly do four things:
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*
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* * The extension configurations are merged;
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* * Parameter values are resolved;
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* * The parameter bag is frozen;
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* * Extension loading is disabled.
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*/
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public function compile()
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{
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if (null === $this->compiler) {
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$this->compiler = new Compiler();
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}
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foreach ($this->compiler->getPassConfig()->getPasses() as $pass) {
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$this->addObjectResource($pass);
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}
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$this->compiler->compile($this);
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$this->extensionConfigs = array();
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parent::compile();
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}
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/**
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* Gets all service ids.
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*
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* @return array An array of all defined service ids
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*/
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public function getServiceIds()
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{
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return array_unique(array_merge(array_keys($this->getDefinitions()), array_keys($this->aliases), parent::getServiceIds()));
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}
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/**
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* Adds the service aliases.
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*
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* @param array $aliases An array of aliases
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*/
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public function addAliases(array $aliases)
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{
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foreach ($aliases as $alias => $id) {
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$this->setAlias($alias, $id);
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}
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}
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/**
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* Sets the service aliases.
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*
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* @param array $aliases An array of service definitions
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*/
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public function setAliases(array $aliases)
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{
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$this->aliases = array();
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$this->addAliases($aliases);
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}
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/**
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* Sets an alias for an existing service.
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*
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* @param string $alias The alias to create
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* @param mixed $id The service to alias
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*/
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public function setAlias($alias, $id)
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{
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$alias = strtolower($alias);
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if (is_string($id)) {
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$id = new Alias($id);
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} else if (!$id instanceof Alias) {
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throw new \InvalidArgumentException('$id must be a string, or an Alias object.');
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}
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if ($alias === strtolower($id)) {
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throw new \InvalidArgumentException('An alias can not reference itself, got a circular reference on "'.$alias.'".');
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}
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unset($this->definitions[$alias]);
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$this->aliases[$alias] = $id;
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}
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/**
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* Removes an alias.
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*
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* @param string $alias The alias to remove
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*/
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public function removeAlias($alias)
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{
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unset($this->aliases[strtolower($alias)]);
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}
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/**
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* Returns true if an alias exists under the given identifier.
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*
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* @param string $id The service identifier
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*
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* @return Boolean true if the alias exists, false otherwise
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*/
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public function hasAlias($id)
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{
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return isset($this->aliases[strtolower($id)]);
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}
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/**
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* Gets all defined aliases.
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*
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* @return array An array of aliases
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*/
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public function getAliases()
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{
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return $this->aliases;
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}
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/**
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* Gets an alias.
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*
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* @param string $id The service identifier
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*
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* @return string The aliased service identifier
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*
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* @throws \InvalidArgumentException if the alias does not exist
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*/
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public function getAlias($id)
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{
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$id = strtolower($id);
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if (!$this->hasAlias($id)) {
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throw new \InvalidArgumentException(sprintf('The service alias "%s" does not exist.', $id));
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}
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return $this->aliases[$id];
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}
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/**
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* Registers a service definition.
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*
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* This methods allows for simple registration of service definition
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* with a fluid interface.
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*
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* @param string $id The service identifier
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* @param string $class The service class
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*
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* @return Definition A Definition instance
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*/
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public function register($id, $class = null)
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{
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return $this->setDefinition(strtolower($id), new Definition($class));
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}
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/**
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* Adds the service definitions.
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*
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* @param Definition[] $definitions An array of service definitions
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*/
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public function addDefinitions(array $definitions)
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{
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foreach ($definitions as $id => $definition) {
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$this->setDefinition($id, $definition);
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}
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}
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/**
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* Sets the service definitions.
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*
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* @param array $definitions An array of service definitions
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*/
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public function setDefinitions(array $definitions)
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{
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$this->definitions = array();
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$this->addDefinitions($definitions);
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}
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/**
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* Gets all service definitions.
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*
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* @return array An array of Definition instances
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*/
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public function getDefinitions()
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{
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return $this->definitions;
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}
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/**
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* Sets a service definition.
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*
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* @param string $id The service identifier
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* @param Definition $definition A Definition instance
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*
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* @throws BadMethodCallException
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*/
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public function setDefinition($id, Definition $definition)
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{
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if ($this->isFrozen()) {
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throw new \BadMethodCallException('Adding definition to a frozen container is not allowed');
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}
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$id = strtolower($id);
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unset($this->aliases[$id]);
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return $this->definitions[$id] = $definition;
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}
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/**
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* Returns true if a service definition exists under the given identifier.
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*
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* @param string $id The service identifier
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*
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* @return Boolean true if the service definition exists, false otherwise
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*/
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public function hasDefinition($id)
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{
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return array_key_exists(strtolower($id), $this->definitions);
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}
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/**
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* Gets a service definition.
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*
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* @param string $id The service identifier
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*
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* @return Definition A Definition instance
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*
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* @throws \InvalidArgumentException if the service definition does not exist
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*/
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public function getDefinition($id)
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{
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$id = strtolower($id);
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|
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if (!$this->hasDefinition($id)) {
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throw new \InvalidArgumentException(sprintf('The service definition "%s" does not exist.', $id));
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}
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return $this->definitions[$id];
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}
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|
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/**
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* Gets a service definition by id or alias.
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|
*
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|
* The method "unaliases" recursively to return a Definition instance.
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*
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* @param string $id The service identifier or alias
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|
*
|
|
* @return Definition A Definition instance
|
|
*
|
|
* @throws \InvalidArgumentException if the service definition does not exist
|
|
*/
|
|
public function findDefinition($id)
|
|
{
|
|
$id = strtolower($id);
|
|
|
|
if ($this->hasAlias($id)) {
|
|
return $this->findDefinition((string) $this->getAlias($id));
|
|
}
|
|
|
|
return $this->getDefinition($id);
|
|
}
|
|
|
|
/**
|
|
* Creates a service for a service definition.
|
|
*
|
|
* @param Definition $definition A service definition instance
|
|
* @param string $id The service identifier
|
|
*
|
|
* @return object The service described by the service definition
|
|
*
|
|
* @throws \InvalidArgumentException When configure callable is not callable
|
|
*/
|
|
private function createService(Definition $definition, $id)
|
|
{
|
|
if (null !== $definition->getFile()) {
|
|
require_once $this->getParameterBag()->resolveValue($definition->getFile());
|
|
}
|
|
|
|
$arguments = $this->resolveServices($this->getParameterBag()->resolveValue($definition->getArguments()));
|
|
|
|
if (null !== $definition->getFactoryMethod()) {
|
|
if (null !== $definition->getFactoryClass()) {
|
|
$factory = $this->getParameterBag()->resolveValue($definition->getFactoryClass());
|
|
} elseif (null !== $definition->getFactoryService()) {
|
|
$factory = $this->get($this->getParameterBag()->resolveValue($definition->getFactoryService()));
|
|
} else {
|
|
throw new \RuntimeException('Cannot create service from factory method without a factory service or factory class.');
|
|
}
|
|
|
|
$service = call_user_func_array(array($factory, $definition->getFactoryMethod()), $arguments);
|
|
} else {
|
|
$r = new \ReflectionClass($this->getParameterBag()->resolveValue($definition->getClass()));
|
|
|
|
$service = null === $r->getConstructor() ? $r->newInstance() : $r->newInstanceArgs($arguments);
|
|
}
|
|
|
|
if (self::SCOPE_PROTOTYPE !== $scope = $definition->getScope()) {
|
|
if (self::SCOPE_CONTAINER !== $scope && !isset($this->scopedServices[$scope])) {
|
|
throw new \RuntimeException('You tried to create a service of an inactive scope.');
|
|
}
|
|
|
|
$this->services[$lowerId = strtolower($id)] = $service;
|
|
|
|
if (self::SCOPE_CONTAINER !== $scope) {
|
|
$this->scopedServices[$scope][$lowerId] = $service;
|
|
}
|
|
}
|
|
|
|
foreach ($definition->getMethodCalls() as $call) {
|
|
$services = self::getServiceConditionals($call[1]);
|
|
|
|
$ok = true;
|
|
foreach ($services as $s) {
|
|
if (!$this->has($s)) {
|
|
$ok = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($ok) {
|
|
call_user_func_array(array($service, $call[0]), $this->resolveServices($this->getParameterBag()->resolveValue($call[1])));
|
|
}
|
|
}
|
|
|
|
$properties = $this->resolveServices($this->getParameterBag()->resolveValue($definition->getProperties()));
|
|
foreach ($properties as $name => $value) {
|
|
$service->$name = $value;
|
|
}
|
|
|
|
if ($callable = $definition->getConfigurator()) {
|
|
if (is_array($callable) && is_object($callable[0]) && $callable[0] instanceof Reference) {
|
|
$callable[0] = $this->get((string) $callable[0]);
|
|
} elseif (is_array($callable)) {
|
|
$callable[0] = $this->getParameterBag()->resolveValue($callable[0]);
|
|
}
|
|
|
|
if (!is_callable($callable)) {
|
|
throw new \InvalidArgumentException(sprintf('The configure callable for class "%s" is not a callable.', get_class($service)));
|
|
}
|
|
|
|
call_user_func($callable, $service);
|
|
}
|
|
|
|
return $service;
|
|
}
|
|
|
|
/**
|
|
* Replaces service references by the real service instance.
|
|
*
|
|
* @param mixed $value A value
|
|
*
|
|
* @return mixed The same value with all service references replaced by the real service instances
|
|
*/
|
|
public function resolveServices($value)
|
|
{
|
|
if (is_array($value)) {
|
|
foreach ($value as &$v) {
|
|
$v = $this->resolveServices($v);
|
|
}
|
|
} elseif (is_object($value) && $value instanceof Reference) {
|
|
$value = $this->get((string) $value, $value->getInvalidBehavior());
|
|
} elseif (is_object($value) && $value instanceof Definition) {
|
|
$value = $this->createService($value, null);
|
|
}
|
|
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* Returns service ids for a given tag.
|
|
*
|
|
* @param string $name The tag name
|
|
*
|
|
* @return array An array of tags
|
|
*/
|
|
public function findTaggedServiceIds($name)
|
|
{
|
|
$tags = array();
|
|
foreach ($this->getDefinitions() as $id => $definition) {
|
|
if ($definition->getTag($name)) {
|
|
$tags[$id] = $definition->getTag($name);
|
|
}
|
|
}
|
|
|
|
return $tags;
|
|
}
|
|
|
|
/**
|
|
* Returns the Service Conditionals.
|
|
*
|
|
* @param mixed $value An array of conditionals to return.
|
|
* @return array An array of Service conditionals
|
|
*/
|
|
static public function getServiceConditionals($value)
|
|
{
|
|
$services = array();
|
|
|
|
if (is_array($value)) {
|
|
foreach ($value as $v) {
|
|
$services = array_unique(array_merge($services, self::getServiceConditionals($v)));
|
|
}
|
|
} elseif (is_object($value) && $value instanceof Reference && $value->getInvalidBehavior() === ContainerInterface::IGNORE_ON_INVALID_REFERENCE) {
|
|
$services[] = (string) $value;
|
|
}
|
|
|
|
return $services;
|
|
}
|
|
}
|