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<?php

/**
 * Smarty Internal Plugin Smarty Template Compiler Base
 * 
 * This file contains the basic classes and methodes for compiling Smarty templates with lexer/parser
 * 
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews 
 */

require_once("smarty_internal_parsetree.php");

/**
 * Class SmartyTemplateCompiler
 */
class Smarty_Internal_SmartyTemplateCompiler extends Smarty_Internal_TemplateCompilerBase {
    // array of vars which can be compiled in local scope
    public $local_var = array();
    /**
     * Initialize compiler
     */
    public function __construct($lexer_class, $parser_class, $smarty)
    {
        $this->smarty = $smarty;
        parent::__construct(); 
        // get required plugins
        $this->lexer_class = $lexer_class;
        $this->parser_class = $parser_class;
    } 

    /**
     * Methode to compile a Smarty template
     * 
     * @param  $_content template source
     * @return bool true if compiling succeeded, false if it failed
     */
    protected function doCompile($_content)
    {
        /* here is where the compiling takes place. Smarty
       tags in the templates are replaces with PHP code,
       then written to compiled files. */ 
        // init the lexer/parser to compile the template
        $this->lex = new $this->lexer_class($_content, $this);
        $this->parser = new $this->parser_class($this->lex, $this);
        if (isset($this->smarty->_parserdebug)) $this->parser->PrintTrace(); 
        // get tokens from lexer and parse them
        while ($this->lex->yylex() && !$this->abort_and_recompile) {
            if (isset($this->smarty->_parserdebug)) echo "<pre>Line {$this->lex->line} Parsing  {$this->parser->yyTokenName[$this->lex->token]} Token " . htmlentities($this->lex->value) . "</pre>";
            $this->parser->doParse($this->lex->token, $this->lex->value);
        } 

        if ($this->abort_and_recompile) {
            // exit here on abort
            return false;
        } 
        // finish parsing process
        $this->parser->doParse(0, 0); 
        // check for unclosed tags
        if (count($this->_tag_stack) > 0) {
            // get stacked info
            list($_open_tag, $_data) = array_pop($this->_tag_stack);
            $this->trigger_template_error("unclosed {" . $_open_tag . "} tag");
        } 
        // return compiled code
        // return str_replace(array("? >\n<?php","? ><?php"), array('',''), $this->parser->retvalue);
        return $this->parser->retvalue;
    } 
} 

?>