<?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\Compiler;
use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\EnvVarProcessor;
use Symfony\Component\DependencyInjection\EnvVarProcessorInterface;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\ParameterBag\EnvPlaceholderParameterBag;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\DependencyInjection\ServiceLocator;
/**
* Creates the container.env_var_processors_locator service.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class RegisterEnvVarProcessorsPass implements CompilerPassInterface
{
private static $allowedTypes = ['array', 'bool', 'float', 'int', 'string'];
public function process(ContainerBuilder $container)
{
$bag = $container->getParameterBag();
$types = [];
$processors = [];
foreach ($container->findTaggedServiceIds('container.env_var_processor') as $id => $tags) {
if (!$r = $container->getReflectionClass($class = $container->getDefinition($id)->getClass())) {
throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
} elseif (!$r->isSubclassOf(EnvVarProcessorInterface::class)) {
throw new InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, EnvVarProcessorInterface::class));
}
foreach ($class::getProvidedTypes() as $prefix => $type) {
$processors[$prefix] = new ServiceClosureArgument(new Reference($id));
$types[$prefix] = self::validateProvidedTypes($type, $class);
}
}
if ($bag instanceof EnvPlaceholderParameterBag) {
foreach (EnvVarProcessor::getProvidedTypes() as $prefix => $type) {
if (!isset($types[$prefix])) {
$types[$prefix] = self::validateProvidedTypes($type, EnvVarProcessor::class);
}
}
$bag->setProvidedTypes($types);
}
if ($processors) {
$container->register('container.env_var_processors_locator', ServiceLocator::class)
->setPublic(true)
->setArguments([$processors])
;
}
}
private static function validateProvidedTypes($types, $class)
{
$types = explode('|', $types);
foreach ($types as $type) {
if (!\in_array($type, self::$allowedTypes)) {
throw new InvalidArgumentException(sprintf('Invalid type "%s" returned by "%s::getProvidedTypes()", expected one of "%s".', $type, $class, implode('", "', self::$allowedTypes)));
}
}
return $types;
}
}