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

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

<?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\Extension\Twig\AsseticFilterFunction;
use Symfony\Bundle\AsseticBundle\Exception\InvalidBundleException;
use Symfony\Bundle\FrameworkBundle\Templating\TemplateReference;
use Symfony\Component\Templating\TemplateNameParserInterface;

/**
 * Assetic node visitor.
 *
 * @author Kris Wallsmith <kris@symfony.com>
 */
class AsseticNodeVisitor extends \Twig_BaseNodeVisitor
{
    private $templateNameParser;
    private $enabledBundles;

    public function __construct(TemplateNameParserInterface $templateNameParser, array $enabledBundles)
    {
        $this->templateNameParser = $templateNameParser;
        $this->enabledBundles = $enabledBundles;
    }

    protected function doEnterNode(\Twig_Node $node, \Twig_Environment $env)
    {
        return $node;
    }

    protected function doLeaveNode(\Twig_Node $node, \Twig_Environment $env)
    {
        if (!$formula = $this->checkNode($node, $env, $name)) {
            return $node;
        }

        // check the bundle
        $templateRef = $this->templateNameParser->parse($env->getParser()->getStream()->getFilename());
        $bundle = $templateRef instanceof TemplateReference ? $templateRef->get('bundle') : null;
        if ($bundle && !in_array($bundle, $this->enabledBundles)) {
            throw new InvalidBundleException($bundle, "the $name() function", $templateRef->getLogicalName(), $this->enabledBundles);
        }

        list($input, $filters, $options) = $formula;
        $line = $node->getLine();

        // check context and call either asset() or path()
        return new \Twig_Node_Expression_Conditional(
            new \Twig_Node_Expression_GetAttr(
                new \Twig_Node_Expression_Name('assetic', $line),
                new \Twig_Node_Expression_Constant('use_controller', $line),