<?php

/**

 * Smarty Internal Plugin Compile extend

 * Compiles the {extends} tag

 *

 * @package    Smarty

 * @subpackage Compiler

 * @author     Uwe Tews

 */

/**

 * Smarty Internal Plugin Compile extend Class

 *

 * @package    Smarty

 * @subpackage Compiler

 */

class Smarty_Internal_Compile_Extends extends Smarty_Internal_CompileBase {

    /**

     * Attribute definition: Overwrites base class.

     *

     * @var array

     * @see Smarty_Internal_CompileBase

     */

    public $required_attributes = array('file');

    /**

     * Attribute definition: Overwrites base class.

     *

     * @var array

     * @see Smarty_Internal_CompileBase

     */

    public $shorttag_order = array('file');

    /**

     * Compiles code for the {extends} tag

     *

     * @param array $args array with attributes from parser

     * @param object $compiler compiler object

     *

     * @return string compiled code

     */

    public function compile($args, $compiler) {

        // check and get attributes

        $_attr = $this->getAttributes($compiler, $args);

        if ($_attr['nocache'] === true) {

            $compiler->trigger_template_error('nocache option not allowed', $compiler->lex->taglineno);

        }

        if (strpos($_attr['file'], '$_tmp') !== false) {

            $compiler->trigger_template_error('illegal value for file attribute', $compiler->lex->taglineno);

        }

        $name = $_attr['file'];

        /** @var Smarty_Internal_Template $_smarty_tpl

         * used in evaluated code

         */

        $_smarty_tpl = $compiler->template;

        eval("\$tpl_name = $name;");

        // create template object

        $_template = new $compiler->smarty->template_class($tpl_name, $compiler->smarty, $compiler->template);

        // check for recursion

        $uid = $_template->source->uid;

        if (isset($compiler->extends_uid[$uid])) {

            $compiler->trigger_template_error("illegal recursive call of \"$include_file\"", $compiler->lex->line - 1);

        }

        $compiler->extends_uid[$uid] = true;

        if (empty($_template->source->components)) {

            array_unshift($compiler->sources, $_template->source);

        } else {

            foreach ($_template->source->components as $source) {

                array_unshift($compiler->sources, $source);

                $uid = $source->uid;

                if (isset($compiler->extends_uid[$uid])) {

                    $compiler->trigger_template_error("illegal recursive call of \"{$source->filepath}\"", $compiler->lex->line - 1);

                }

                $compiler->extends_uid[$uid] = true;

            }

        }

        unset ($_template);

        $compiler->inheritance_child = true;

        $compiler->lex->yypushstate(Smarty_Internal_Templatelexer::CHILDBODY);

        return '';

    }

}