/**
  * display compiler error messages without dying
  * 
  * If parameter $args is empty it is a parser detected syntax error.
  * In this case the parser is called to obtain information about exspected tokens.
  * 
  * If parameter $args contains a string this is used as error message
  * 
  * @todo output exact position of parse error in source line
  * @param  $args string individual error message or null
  */
 public function trigger_config_file_error($args = null)
 {
     $this->lex = Smarty_Internal_Configfilelexer::instance();
     $this->parser = Smarty_Internal_Configfileparser::instance();
     // get template source line which has error
     $line = $this->lex->line;
     if (isset($args)) {
         // $line--;
     }
     $match = preg_split("/\n/", $this->lex->data);
     $error_text = "Syntax error in config file '{$this->config->getConfigFilepath()}' on line {$line} '{$match[$line - 1]}' ";
     if (isset($args)) {
         // individual error message
         $error_text .= $args;
     } else {
         // exspected token from parser
         foreach ($this->parser->yy_get_expected_tokens($this->parser->yymajor) as $token) {
             $exp_token = $this->parser->yyTokenName[$token];
             if (isset($this->lex->smarty_token_names[$exp_token])) {
                 // token type from lexer
                 $expect[] = '"' . $this->lex->smarty_token_names[$exp_token] . '"';
             } else {
                 // otherwise internal token name
                 $expect[] = $this->parser->yyTokenName[$token];
             }
         }
         // output parser error message
         $error_text .= ' - Unexpected "' . $this->lex->value . '", expected one of: ' . implode(' , ', $expect);
     }
     throw new SmartyCompilerException($error_text);
 }
 public function trigger_config_file_error($args = null)
 {
     $this->lex = Smarty_Internal_Configfilelexer::instance();
     $this->parser = Smarty_Internal_Configfileparser::instance();
     $line = $this->lex->line;
     if (isset($args)) {
     }
     $match = preg_split("/\n/", $this->lex->data);
     $error_text = "Syntax error in config file '{$this->config->source->filepath}' on line {$line} '{$match[$line - 1]}' ";
     if (isset($args)) {
         $error_text .= $args;
     } else {
         foreach ($this->parser->yy_get_expected_tokens($this->parser->yymajor) as $token) {
             $exp_token = $this->parser->yyTokenName[$token];
             if (isset($this->lex->smarty_token_names[$exp_token])) {
                 $expect[] = '"' . $this->lex->smarty_token_names[$exp_token] . '"';
             } else {
                 $expect[] = $this->parser->yyTokenName[$token];
             }
         }
         $error_text .= ' - Unexpected "' . $this->lex->value . '", expected one of: ' . implode(' , ', $expect);
     }
     throw new SmartyCompilerException($error_text);
 }
 static function PrintTrace()
 {
     self::$yyTraceFILE = fopen('php://output', 'w');
     self::$yyTracePrompt = '<br>';
 }