README.md

Simpl

Generates intermediate code for language called "Simpl"

Language "Simpl"

SimpL has following classes of tokens:

      Operators : (+ - * /  = > >=  < <= == != )
      Parenthesis and Semicolon :  ( ) ;
      Keywords : if, then, else, endif, print, newline
      Integers: Sequence of digits
      ID: starts with letter and any number of letter or digits
      Quoted Strings: “<string>”
      Comments : Line starting with //

Grammar is given below:

      program -> stmt_list 
      stmt_list -> stmt_list stmt  | stmt 
      stmt -> assign_stmt | print_stmt | if_stmt 
      assign_stmt -> ID = expr ;
      print_stmt -> PRINT expr ; | PRINT STRING ; | PRINT NEWLINE ; if_stmt -> IF expr THEN stmt_list ENDIF 
                 | IF expr THEN stmt_list ELSE stmt_list ENDIF 
      expr -> ( expr ) | expr + expr | expr - expr | expr * expr | expr / expr 
           | expr < expr | expr > expr | expr <= expr | expr >= expr | expr == expr
           | expr != expr | - expr | INT | ID 

How to build and run

To build,execute the command in terminal

 bash Build.sh (it generates the executable file Simpl)

To test with Eg_test_case:

  ./Simpl < Eg_test_case