175 lines
5.7 KiB
PHP
175 lines
5.7 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\Compiler;
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use Symfony\Component\DependencyInjection\Definition;
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use Symfony\Component\DependencyInjection\ExpressionLanguage;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\ExpressionLanguage\Expression;
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/**
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* Run this pass before passes that need to know more about the relation of
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* your services.
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*
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* This class will populate the ServiceReferenceGraph with information. You can
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* retrieve the graph in other passes from the compiler.
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*
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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*/
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class AnalyzeServiceReferencesPass implements RepeatablePassInterface
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{
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private $graph;
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private $container;
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private $currentId;
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private $currentDefinition;
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private $repeatedPass;
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private $onlyConstructorArguments;
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private $expressionLanguage;
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/**
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* @param bool $onlyConstructorArguments Sets this Service Reference pass to ignore method calls
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*/
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public function __construct($onlyConstructorArguments = false)
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{
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$this->onlyConstructorArguments = (bool) $onlyConstructorArguments;
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}
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/**
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* {@inheritdoc}
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*/
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public function setRepeatedPass(RepeatedPass $repeatedPass)
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{
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$this->repeatedPass = $repeatedPass;
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}
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/**
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* Processes a ContainerBuilder object to populate the service reference graph.
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*
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* @param ContainerBuilder $container
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*/
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public function process(ContainerBuilder $container)
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{
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$this->container = $container;
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$this->graph = $container->getCompiler()->getServiceReferenceGraph();
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$this->graph->clear();
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foreach ($container->getDefinitions() as $id => $definition) {
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if ($definition->isSynthetic() || $definition->isAbstract()) {
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continue;
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}
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$this->currentId = $id;
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$this->currentDefinition = $definition;
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$this->processArguments($definition->getArguments());
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if (is_array($definition->getFactory())) {
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$this->processArguments($definition->getFactory());
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}
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if (!$this->onlyConstructorArguments) {
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$this->processArguments($definition->getMethodCalls());
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$this->processArguments($definition->getProperties());
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if ($definition->getConfigurator()) {
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$this->processArguments(array($definition->getConfigurator()));
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}
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}
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}
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foreach ($container->getAliases() as $id => $alias) {
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$this->graph->connect($id, $alias, (string) $alias, $this->getDefinition((string) $alias), null);
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}
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}
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/**
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* Processes service definitions for arguments to find relationships for the service graph.
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*
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* @param array $arguments An array of Reference or Definition objects relating to service definitions
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*/
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private function processArguments(array $arguments)
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{
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foreach ($arguments as $argument) {
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if (is_array($argument)) {
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$this->processArguments($argument);
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} elseif ($argument instanceof Expression) {
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$this->getExpressionLanguage()->compile((string) $argument, array('this' => 'container'));
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} elseif ($argument instanceof Reference) {
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$this->graph->connect(
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$this->currentId,
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$this->currentDefinition,
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$this->getDefinitionId((string) $argument),
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$this->getDefinition((string) $argument),
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$argument
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);
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} elseif ($argument instanceof Definition) {
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$this->processArguments($argument->getArguments());
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$this->processArguments($argument->getMethodCalls());
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$this->processArguments($argument->getProperties());
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if (is_array($argument->getFactory())) {
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$this->processArguments($argument->getFactory());
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}
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}
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}
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}
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/**
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* Returns a service definition given the full name or an alias.
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*
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* @param string $id A full id or alias for a service definition
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*
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* @return Definition|null The definition related to the supplied id
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*/
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private function getDefinition($id)
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{
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$id = $this->getDefinitionId($id);
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return null === $id ? null : $this->container->getDefinition($id);
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}
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private function getDefinitionId($id)
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{
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while ($this->container->hasAlias($id)) {
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$id = (string) $this->container->getAlias($id);
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}
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if (!$this->container->hasDefinition($id)) {
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return;
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}
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return $id;
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}
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private function getExpressionLanguage()
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{
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if (null === $this->expressionLanguage) {
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$providers = $this->container->getExpressionLanguageProviders();
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$this->expressionLanguage = new ExpressionLanguage(null, $providers, function ($arg) {
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if ('""' === substr_replace($arg, '', 1, -1)) {
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$id = stripcslashes(substr($arg, 1, -1));
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$this->graph->connect(
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$this->currentId,
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$this->currentDefinition,
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$this->getDefinitionId($id),
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$this->getDefinition($id)
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);
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}
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return sprintf('$this->get(%s)', $arg);
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});
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}
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return $this->expressionLanguage;
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}
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}
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