<?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\ContainerBuilder;

use Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException;

/**

 * Resolves all parameter placeholders "%somevalue%" to their real values.

 *

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

 */

class ResolveParameterPlaceHoldersPass implements CompilerPassInterface

{

    private $parameterBag;

    /**

     * Processes the ContainerBuilder to resolve parameter placeholders.

     *

     * @param ContainerBuilder $container

     */

    public function process(ContainerBuilder $container)

    {

        $parameterBag = $container->getParameterBag();

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

            try {

                $definition->setClass($parameterBag->resolveValue($definition->getClass()));

                $definition->setFile($parameterBag->resolveValue($definition->getFile()));

                $definition->setArguments($parameterBag->resolveValue($definition->getArguments()));

                $calls = array();

                foreach ($definition->getMethodCalls() as $name => $arguments) {

                    $calls[$parameterBag->resolveValue($name)] = $parameterBag->resolveValue($arguments);

                }

                $definition->setMethodCalls($calls);

                $definition->setProperties($parameterBag->resolveValue($definition->getProperties()));

            } catch (ParameterNotFoundException $e) {

                $e->setSourceId($id);

                throw $e;

            }

        }

        $aliases = array();

        foreach ($container->getAliases() as $name => $target) {

            $aliases[$parameterBag->resolveValue($name)] = $parameterBag->resolveValue($target);

        }

        $container->setAliases($aliases);

        $parameterBag->resolve();

    }

}