References

Abstract. While developing a prototype refactoring tool, we found that using the default Erlang scanner and parser is not sufficient, because they discard important information such as macros, whitespace and punctua-tion. These are needed to restore the original source and its layout from the representation. Additionally, refactoring steps have to construct syn-tactically correct code parts. These needs have led us to develop a new grammar description and tools. We present the new grammar representation, give a method to generate the lexical scanner and parser from it, and describe the inner represen-tation graph which is built using the generated tools