www.aleph1.co.uk Git - yaffs-website/blob - vendor/symfony/dependency-injection/Compiler/RegisterEnvVarProcessorsPass.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\DependencyInjection\Compiler;
  13
  14 use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
  15 use Symfony\Component\DependencyInjection\ContainerBuilder;
  16 use Symfony\Component\DependencyInjection\EnvVarProcessor;
  17 use Symfony\Component\DependencyInjection\EnvVarProcessorInterface;
  18 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
  19 use Symfony\Component\DependencyInjection\ParameterBag\EnvPlaceholderParameterBag;
  20 use Symfony\Component\DependencyInjection\ServiceLocator;
  21 use Symfony\Component\DependencyInjection\Reference;
  22
  23 /**
  24  * Creates the container.env_var_processors_locator service.
  25  *
  26  * @author Nicolas Grekas <p@tchwork.com>
  27  */
  28 class RegisterEnvVarProcessorsPass implements CompilerPassInterface
  29 {
  30     private static $allowedTypes = array('array', 'bool', 'float', 'int', 'string');
  31
  32     public function process(ContainerBuilder $container)
  33     {
  34         $bag = $container->getParameterBag();
  35         $types = array();
  36         $processors = array();
  37         foreach ($container->findTaggedServiceIds('container.env_var_processor') as $id => $tags) {
  38             if (!$r = $container->getReflectionClass($class = $container->getDefinition($id)->getClass())) {
  39                 throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
  40             } elseif (!$r->isSubclassOf(EnvVarProcessorInterface::class)) {
  41                 throw new InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, EnvVarProcessorInterface::class));
  42             }
  43             foreach ($class::getProvidedTypes() as $prefix => $type) {
  44                 $processors[$prefix] = new ServiceClosureArgument(new Reference($id));
  45                 $types[$prefix] = self::validateProvidedTypes($type, $class);
  46             }
  47         }
  48
  49         if ($bag instanceof EnvPlaceholderParameterBag) {
  50             foreach (EnvVarProcessor::getProvidedTypes() as $prefix => $type) {
  51                 if (!isset($types[$prefix])) {
  52                     $types[$prefix] = self::validateProvidedTypes($type, EnvVarProcessor::class);
  53                 }
  54             }
  55             $bag->setProvidedTypes($types);
  56         }
  57
  58         if ($processors) {
  59             $container->register('container.env_var_processors_locator', ServiceLocator::class)
  60                 ->setPublic(true)
  61                 ->setArguments(array($processors))
  62             ;
  63         }
  64     }
  65
  66     private static function validateProvidedTypes($types, $class)
  67     {
  68         $types = explode('|', $types);
  69
  70         foreach ($types as $type) {
  71             if (!in_array($type, self::$allowedTypes)) {
  72                 throw new InvalidArgumentException(sprintf('Invalid type "%s" returned by "%s::getProvidedTypes()", expected one of "%s".', $type, $class, implode('", "', self::$allowedTypes)));
  73             }
  74         }
  75
  76         return $types;
  77     }
  78 }