public function isCurrent($arg)
{
if (!isset($this->tokens[$this->position])) {
return FALSE;
}
$args = func_get_args();
$token = $this->tokens[$this->position];
return in_array($token[Tokenizer::VALUE], $args, TRUE) || isset($token[Tokenizer::TYPE]) && in_array($token[Tokenizer::TYPE], $args, TRUE);
}