vendor/symfony/assetic-bundle/Twig/AsseticNode.php

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<?php

/*
 * This file is part of the Symfony framework.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace Symfony\Bundle\AsseticBundle\Twig;

use Assetic\Asset\AssetInterface;
use Assetic\Extension\Twig\AsseticNode as BaseAsseticNode;

/**
 * Assetic node.
 *
 * @author Kris Wallsmith <kris@symfony.com>
 */
class AsseticNode extends BaseAsseticNode
{
    protected function compileAssetUrl(\Twig_Compiler $compiler, AssetInterface $asset, $name)
    {
        $vars = array();
        foreach ($asset->getVars() as $var) {
            $vars[] = new \Twig_Node_Expression_Constant($var, $this->getTemplateLine());

            // Retrieves values of assetic vars from the context, $context['assetic']['vars'][$var].
            $vars[] = new \Twig_Node_Expression_GetAttr(
                new \Twig_Node_Expression_GetAttr(
                    new \Twig_Node_Expression_Name('assetic', $this->getTemplateLine()),
                    new \Twig_Node_Expression_Constant('vars', $this->getTemplateLine()),
                    new \Twig_Node_Expression_Array(array(), $this->getTemplateLine()),
                    \Twig_Template::ARRAY_CALL,
                    $this->getTemplateLine()
                ),
                new \Twig_Node_Expression_Constant($var, $this->getTemplateLine()),
                new \Twig_Node_Expression_Array(array(), $this->getTemplateLine()),
                \Twig_Template::ARRAY_CALL,
                $this->getTemplateLine()
            );
        }
        $compiler
            ->raw('isset($context[\'assetic\'][\'use_controller\']) && $context[\'assetic\'][\'use_controller\'] ? ')
            ->subcompile($this->getPathFunction($name, $vars))
            ->raw(' : ')
            ->subcompile($this->getAssetFunction(new TargetPathNode($this, $asset, $name)))
        ;
    }

    private function getPathFunction($name, array $vars = array())
    {
        $nodes = array(new \Twig_Node_Expression_Constant('_assetic_'.$name, $this->getTemplateLine()));

        if (!empty($vars)) {
            $nodes[] = new \Twig_Node_Expression_Array($vars, $this->getTemplateLine());
        }