New Compile Error/2014_05_03

source -> scanner -> tokenize -> parser -> AST -> semantic analysis -> decorated AST -> Intermediate representation(중간 코드) -> code optimize -> target code

IR 코드를 기준으로 frontend와 backend가 나뉨, backend는 컴퓨터 구조와 밀접한 내용이라 frontend쪽을 주로 다룰 것.

source language : c
target language : javascript
code language : java, to try

BNF는 복잡하므로 일단 정규표현식을 사용함

• number := integer | double
  
• integer := decimal integer
  
• decimal integer := 0 | -? 1-9 0-9 *
  
• double := decimal integer . 0-9* |
  decimal integer eE decimal integer?
  
• factor := term + term |
  term / term |
  numer |
  ( term )
  
• term := factor + factor |
  factor - factor |
  factor
  
• expression := term