--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/DependencyInjection/Container.php Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,451 @@
+<?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;
+
+use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
+use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
+use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
+use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
+use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
+
+/**
+ * Container is a dependency injection container.
+ *
+ * It gives access to object instances (services).
+ *
+ * Services and parameters are simple key/pair stores.
+ *
+ * Parameter and service keys are case insensitive.
+ *
+ * A service id can contain lowercased letters, digits, underscores, and dots.
+ * Underscores are used to separate words, and dots to group services
+ * under namespaces:
+ *
+ * <ul>
+ * <li>request</li>
+ * <li>mysql_session_storage</li>
+ * <li>symfony.mysql_session_storage</li>
+ * </ul>
+ *
+ * A service can also be defined by creating a method named
+ * getXXXService(), where XXX is the camelized version of the id:
+ *
+ * <ul>
+ * <li>request -> getRequestService()</li>
+ * <li>mysql_session_storage -> getMysqlSessionStorageService()</li>
+ * <li>symfony.mysql_session_storage -> getSymfony_MysqlSessionStorageService()</li>
+ * </ul>
+ *
+ * The container can have three possible behaviors when a service does not exist:
+ *
+ * * EXCEPTION_ON_INVALID_REFERENCE: Throws an exception (the default)
+ * * NULL_ON_INVALID_REFERENCE: Returns null
+ * * IGNORE_ON_INVALID_REFERENCE: Ignores the wrapping command asking for the reference
+ * (for instance, ignore a setter if the service does not exist)
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ *
+ * @api
+ */
+class Container implements ContainerInterface
+{
+ protected $parameterBag;
+ protected $services;
+ protected $scopes;
+ protected $scopeChildren;
+ protected $scopedServices;
+ protected $scopeStacks;
+ protected $loading = array();
+
+ /**
+ * Constructor.
+ *
+ * @param ParameterBagInterface $parameterBag A ParameterBagInterface instance
+ *
+ * @api
+ */
+ public function __construct(ParameterBagInterface $parameterBag = null)
+ {
+ $this->parameterBag = null === $parameterBag ? new ParameterBag() : $parameterBag;
+
+ $this->services = array();
+ $this->scopes = array();
+ $this->scopeChildren = array();
+ $this->scopedServices = array();
+ $this->scopeStacks = array();
+
+ $this->set('service_container', $this);
+ }
+
+ /**
+ * Compiles the container.
+ *
+ * This method does two things:
+ *
+ * * Parameter values are resolved;
+ * * The parameter bag is frozen.
+ *
+ * @api
+ */
+ public function compile()
+ {
+ $this->parameterBag->resolve();
+
+ $this->parameterBag = new FrozenParameterBag($this->parameterBag->all());
+ }
+
+ /**
+ * Returns true if the container parameter bag are frozen.
+ *
+ * @return Boolean true if the container parameter bag are frozen, false otherwise
+ *
+ * @api
+ */
+ public function isFrozen()
+ {
+ return $this->parameterBag instanceof FrozenParameterBag;
+ }
+
+ /**
+ * Gets the service container parameter bag.
+ *
+ * @return ParameterBagInterface A ParameterBagInterface instance
+ *
+ * @api
+ */
+ public function getParameterBag()
+ {
+ return $this->parameterBag;
+ }
+
+ /**
+ * Gets a parameter.
+ *
+ * @param string $name The parameter name
+ *
+ * @return mixed The parameter value
+ *
+ * @throws \InvalidArgumentException if the parameter is not defined
+ *
+ * @api
+ */
+ public function getParameter($name)
+ {
+ return $this->parameterBag->get($name);
+ }
+
+ /**
+ * Checks if a parameter exists.
+ *
+ * @param string $name The parameter name
+ *
+ * @return Boolean The presence of parameter in container
+ *
+ * @api
+ */
+ public function hasParameter($name)
+ {
+ return $this->parameterBag->has($name);
+ }
+
+ /**
+ * Sets a parameter.
+ *
+ * @param string $name The parameter name
+ * @param mixed $value The parameter value
+ *
+ * @api
+ */
+ public function setParameter($name, $value)
+ {
+ $this->parameterBag->set($name, $value);
+ }
+
+ /**
+ * Sets a service.
+ *
+ * @param string $id The service identifier
+ * @param object $service The service instance
+ * @param string $scope The scope of the service
+ *
+ * @api
+ */
+ public function set($id, $service, $scope = self::SCOPE_CONTAINER)
+ {
+ if (self::SCOPE_PROTOTYPE === $scope) {
+ throw new \InvalidArgumentException('You cannot set services of scope "prototype".');
+ }
+
+ $id = strtolower($id);
+
+ if (self::SCOPE_CONTAINER !== $scope) {
+ if (!isset($this->scopedServices[$scope])) {
+ throw new \RuntimeException('You cannot set services of inactive scopes.');
+ }
+
+ $this->scopedServices[$scope][$id] = $service;
+ }
+
+ $this->services[$id] = $service;
+ }
+
+ /**
+ * Returns true if the given service is defined.
+ *
+ * @param string $id The service identifier
+ *
+ * @return Boolean true if the service is defined, false otherwise
+ *
+ * @api
+ */
+ public function has($id)
+ {
+ $id = strtolower($id);
+
+ return isset($this->services[$id]) || method_exists($this, 'get'.strtr($id, array('_' => '', '.' => '_')).'Service');
+ }
+
+ /**
+ * Gets a service.
+ *
+ * If a service is both defined through a set() method and
+ * with a set*Service() method, the former has always precedence.
+ *
+ * @param string $id The service identifier
+ * @param integer $invalidBehavior The behavior when the service does not exist
+ *
+ * @return object The associated service
+ *
+ * @throws \InvalidArgumentException if the service is not defined
+ *
+ * @see Reference
+ *
+ * @api
+ */
+ public function get($id, $invalidBehavior = self::EXCEPTION_ON_INVALID_REFERENCE)
+ {
+ $id = strtolower($id);
+
+ if (isset($this->services[$id])) {
+ return $this->services[$id];
+ }
+
+ if (isset($this->loading[$id])) {
+ throw new ServiceCircularReferenceException($id, array_keys($this->loading));
+ }
+
+ if (method_exists($this, $method = 'get'.strtr($id, array('_' => '', '.' => '_')).'Service')) {
+ $this->loading[$id] = true;
+
+ try {
+ $service = $this->$method();
+ } catch (\Exception $e) {
+ unset($this->loading[$id]);
+ throw $e;
+ }
+
+ unset($this->loading[$id]);
+
+ return $service;
+ }
+
+ if (self::EXCEPTION_ON_INVALID_REFERENCE === $invalidBehavior) {
+ throw new ServiceNotFoundException($id);
+ }
+ }
+
+ /**
+ * Gets all service ids.
+ *
+ * @return array An array of all defined service ids
+ */
+ public function getServiceIds()
+ {
+ $ids = array();
+ $r = new \ReflectionClass($this);
+ foreach ($r->getMethods() as $method) {
+ if (preg_match('/^get(.+)Service$/', $method->getName(), $match)) {
+ $ids[] = self::underscore($match[1]);
+ }
+ }
+
+ return array_unique(array_merge($ids, array_keys($this->services)));
+ }
+
+ /**
+ * This is called when you enter a scope
+ *
+ * @param string $name
+ * @return void
+ *
+ * @api
+ */
+ public function enterScope($name)
+ {
+ if (!isset($this->scopes[$name])) {
+ throw new \InvalidArgumentException(sprintf('The scope "%s" does not exist.', $name));
+ }
+
+ if (self::SCOPE_CONTAINER !== $this->scopes[$name] && !isset($this->scopedServices[$this->scopes[$name]])) {
+ throw new \RuntimeException(sprintf('The parent scope "%s" must be active when entering this scope.', $this->scopes[$name]));
+ }
+
+ // check if a scope of this name is already active, if so we need to
+ // remove all services of this scope, and those of any of its child
+ // scopes from the global services map
+ if (isset($this->scopedServices[$name])) {
+ $services = array($this->services, $name => $this->scopedServices[$name]);
+ unset($this->scopedServices[$name]);
+
+ foreach ($this->scopeChildren[$name] as $child) {
+ $services[$child] = $this->scopedServices[$child];
+ unset($this->scopedServices[$child]);
+ }
+
+ // update global map
+ $this->services = call_user_func_array('array_diff_key', $services);
+ array_shift($services);
+
+ // add stack entry for this scope so we can restore the removed services later
+ if (!isset($this->scopeStacks[$name])) {
+ $this->scopeStacks[$name] = new \SplStack();
+ }
+ $this->scopeStacks[$name]->push($services);
+ }
+
+ $this->scopedServices[$name] = array();
+ }
+
+ /**
+ * This is called to leave the current scope, and move back to the parent
+ * scope.
+ *
+ * @param string $name The name of the scope to leave
+ * @return void
+ * @throws \InvalidArgumentException if the scope is not active
+ *
+ * @api
+ */
+ public function leaveScope($name)
+ {
+ if (!isset($this->scopedServices[$name])) {
+ throw new \InvalidArgumentException(sprintf('The scope "%s" is not active.', $name));
+ }
+
+ // remove all services of this scope, or any of its child scopes from
+ // the global service map
+ $services = array($this->services, $this->scopedServices[$name]);
+ unset($this->scopedServices[$name]);
+ foreach ($this->scopeChildren[$name] as $child) {
+ if (!isset($this->scopedServices[$child])) {
+ continue;
+ }
+
+ $services[] = $this->scopedServices[$child];
+ unset($this->scopedServices[$child]);
+ }
+ $this->services = call_user_func_array('array_diff_key', $services);
+
+ // check if we need to restore services of a previous scope of this type
+ if (isset($this->scopeStacks[$name]) && count($this->scopeStacks[$name]) > 0) {
+ $services = $this->scopeStacks[$name]->pop();
+ $this->scopedServices += $services;
+
+ array_unshift($services, $this->services);
+ $this->services = call_user_func_array('array_merge', $services);
+ }
+ }
+
+ /**
+ * Adds a scope to the container.
+ *
+ * @param ScopeInterface $scope
+ * @return void
+ *
+ * @api
+ */
+ public function addScope(ScopeInterface $scope)
+ {
+ $name = $scope->getName();
+ $parentScope = $scope->getParentName();
+
+ if (self::SCOPE_CONTAINER === $name || self::SCOPE_PROTOTYPE === $name) {
+ throw new \InvalidArgumentException(sprintf('The scope "%s" is reserved.', $name));
+ }
+ if (isset($this->scopes[$name])) {
+ throw new \InvalidArgumentException(sprintf('A scope with name "%s" already exists.', $name));
+ }
+ if (self::SCOPE_CONTAINER !== $parentScope && !isset($this->scopes[$parentScope])) {
+ throw new \InvalidArgumentException(sprintf('The parent scope "%s" does not exist, or is invalid.', $parentScope));
+ }
+
+ $this->scopes[$name] = $parentScope;
+ $this->scopeChildren[$name] = array();
+
+ // normalize the child relations
+ while ($parentScope !== self::SCOPE_CONTAINER) {
+ $this->scopeChildren[$parentScope][] = $name;
+ $parentScope = $this->scopes[$parentScope];
+ }
+ }
+
+ /**
+ * Returns whether this container has a certain scope
+ *
+ * @param string $name The name of the scope
+ * @return Boolean
+ *
+ * @api
+ */
+ public function hasScope($name)
+ {
+ return isset($this->scopes[$name]);
+ }
+
+ /**
+ * Returns whether this scope is currently active
+ *
+ * This does not actually check if the passed scope actually exists.
+ *
+ * @param string $name
+ * @return Boolean
+ *
+ * @api
+ */
+ public function isScopeActive($name)
+ {
+ return isset($this->scopedServices[$name]);
+ }
+
+ /**
+ * Camelizes a string.
+ *
+ * @param string $id A string to camelize
+ * @return string The camelized string
+ */
+ static public function camelize($id)
+ {
+ return preg_replace_callback('/(^|_|\.)+(.)/', function ($match) { return ('.' === $match[1] ? '_' : '').strtoupper($match[2]); }, $id);
+ }
+
+ /**
+ * A string to underscore.
+ *
+ * @param string $id The string to underscore
+ * @return string The underscored string
+ */
+ static public function underscore($id)
+ {
+ return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), strtr($id, '_', '.')));
+ }
+}