smarty_internal_compile_extends.php
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smarty_internal_compile_extends.php
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	<?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'];
	$_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\"", $this->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])) {
	$compiler->trigger_template_error("illegal recursive call of \"{$sorce->filepath}\"", $this->lex->line - 1);
	}
	$compiler->extends_uid[$uid] = true;
	}
	}
	unset ($_template);
	$compiler->inheritance_child = true;
	$compiler->lex->yypushstate(Smarty_Internal_Templatelexer::CHILDBODY);
	return '';
	}
	}

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