private void _replaceToken(){
        if(m_token.type == Tokenizer.TokType.NUMBER)
            m_token.value = numer_terminal;
        else if(m_token.type == Tokenizer.TokType.KWORIDENT 
                && !(m_key_words.contains(m_token.value)))
            m_token.value = variable_terminal;
        //else if(m_token.type == Tokenizer.TokType.DIRECTIVE)
          //  m_token.value = directive_terminal;
    }