<?php

/*

 * This file is part of Twig.

 *

 * (c) 2010 Fabien Potencier

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

/**

 * Represents a debug node.

 *

 * @package    twig

 * @subpackage Twig-extensions

 * @author     Fabien Potencier <fabien.potencier@symfony-project.com>

 * @version    SVN: $Id$

 */

class Twig_Extensions_Node_Debug extends Twig_Node

{

    public function __construct(Twig_Node_Expression $expr = null, $lineno, $tag = null)

    {

        parent::__construct(array('expr' => $expr), array(), $lineno, $tag);

    }

    /**

     * Compiles the node to PHP.

     *

     * @param Twig_Compiler A Twig_Compiler instance

     */

    public function compile(Twig_Compiler $compiler)

    {

        $compiler->addDebugInfo($this);

        $compiler

            ->write("if (\$this->env->isDebug()) {\n")

            ->indent()

        ;

        if (null === $this->getNode('expr')) {

            // remove embedded templates (macros) from the context

            $compiler

                ->write("\$vars = array();\n")

                ->write("foreach (\$context as \$key => \$value) {\n")

                ->indent()

                ->write("if (!\$value instanceof Twig_Template) {\n")

                ->indent()

                ->write("\$vars[\$key] = \$value;\n")

                ->outdent()

                ->write("}\n")

                ->outdent()

                ->write("}\n")

                ->write("var_dump(\$vars);\n")

            ;

        } else {

            $compiler

                ->write("var_dump(")

                ->subcompile($this->getNode('expr'))

                ->raw(");\n")

            ;

        }

        $compiler

            ->outdent()

            ->write("}\n")

        ;

    }

}