1 <?php

     2 

     3 /*

     4  * This file is part of the Symfony framework.

     5  *

     6  * (c) Fabien Potencier <fabien@symfony.com>

     7  *

     8  * This source file is subject to the MIT license that is bundled

     9  * with this source code in the file LICENSE.

    10  */

    11 

    12 namespace Symfony\Component\DependencyInjection\Compiler;

    13 

    14 use Symfony\Component\DependencyInjection\Definition;

    15 

    16 use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;

    17 use Symfony\Component\DependencyInjection\ContainerInterface;

    18 use Symfony\Component\DependencyInjection\Reference;

    19 use Symfony\Component\DependencyInjection\ContainerBuilder;

    20 

    21 /**

    22  * Checks that all references are pointing to a valid service.

    23  *

    24  * @author Johannes M. Schmitt <schmittjoh@gmail.com>

    25  */

    26 class CheckExceptionOnInvalidReferenceBehaviorPass implements CompilerPassInterface

    27 {

    28     private $container;

    29     private $sourceId;

    30 

    31     public function process(ContainerBuilder $container)

    32     {

    33         $this->container = $container;

    34 

    35         foreach ($container->getDefinitions() as $id => $definition) {

    36             $this->sourceId = $id;

    37             $this->processDefinition($definition);

    38         }

    39     }

    40 

    41     private function processDefinition(Definition $definition)

    42     {

    43         $this->processReferences($definition->getArguments());

    44         $this->processReferences($definition->getMethodCalls());

    45         $this->processReferences($definition->getProperties());

    46     }

    47 

    48     private function processReferences(array $arguments)

    49     {

    50         foreach ($arguments as $argument) {

    51             if (is_array($argument)) {

    52                 $this->processReferences($argument);

    53             } else if ($argument instanceof Definition) {

    54                 $this->processDefinition($argument);

    55             } else if ($argument instanceof Reference && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE === $argument->getInvalidBehavior()) {

    56                 $destId = (string) $argument;

    57 

    58                 if (!$this->container->has($destId)) {

    59                     throw new ServiceNotFoundException($destId, $this->sourceId);

    60                 }

    61             }

    62         }

    63     }

    64 }