<?php

/*

 * This file is part of Twig.

 *

 * (c) 2009 Fabien Potencier

 * (c) 2009 Armin Ronacher

 *

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

 * file that was distributed with this source code.

 */

/**

 * Represents an include node.

 *

 * @package    twig

 * @author     Fabien Potencier <fabien@symfony.com>

 */

class Twig_Node_Include extends Twig_Node implements Twig_NodeOutputInterface

{

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

    {

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

    }

    /**

     * Compiles the node to PHP.

     *

     * @param Twig_Compiler A Twig_Compiler instance

     */

    public function compile(Twig_Compiler $compiler)

    {

        $compiler->addDebugInfo($this);

        if ($this->getNode('expr') instanceof Twig_Node_Expression_Constant) {

            $compiler

                ->write("\$this->env->loadTemplate(")

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

                ->raw(")->display(")

            ;

        } else {

            $compiler

                ->write("\$template = ")

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

                ->raw(";\n")

                ->write("if (!\$template")

                ->raw(" instanceof Twig_Template) {\n")

                ->indent()

                ->write("\$template = \$this->env->loadTemplate(\$template);\n")

                ->outdent()

                ->write("}\n")

                ->write('$template->display(')

            ;

        }

        if (false === $this->getAttribute('only')) {

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

                $compiler->raw('$context');

            } else {

                $compiler

                    ->raw('array_merge($context, ')

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

                    ->raw(')')

                ;

            }

        } else {

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

                $compiler->raw('array()');

            } else {

                $compiler->subcompile($this->getNode('variables'));

            }

        }

        $compiler->raw(");\n");

    }

}