ThinkPHP/Library/Vendor/Smarty/sysplugins/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)
    {
        static $_is_stringy = array('string' => true, 'eval' => true);
        $this->_rdl = preg_quote($compiler->smarty->right_delimiter);
        $this->_ldl = preg_quote($compiler->smarty->left_delimiter);
        $filepath = $compiler->template->source->filepath;
        // check and get attributes
        $_attr = $this->getAttributes($compiler, $args);
        if ($_attr['nocache'] === true) {
            $compiler->trigger_template_error('nocache option not allowed', $compiler->lex->taglineno);
        }

        $_smarty_tpl = $compiler->template;
        $include_file = null;
        if (strpos($_attr['file'], '$_tmp') !== false) {
            $compiler->trigger_template_error('illegal value for file attribute', $compiler->lex->taglineno);
        }
        eval('$include_file = ' . $_attr['file'] . ';');