generator        -- Import Statements
declarations    -- General Declarations
operators        -- Operators (our Node Kinds)
    ASGNI,ADDI,CVCI,IOI,ADDRLP,CNSTI,INDIRC
rules            -- Production Rules
   stmt = ASGNI(disp,reg) : 1
        | reg : 0.

    reg = ADDI(reg,rc) : 1
        | CVCI(INDIRC(disp)) : 1
        | IOI : 0
        | disp : 1.

   disp = ADDI(reg,con) : 1
        | ADDRLP : 0.

     rc = con : 0
        | reg : 0.

    con = CNSTI : 0
        | IOI : 0.

    ref = INDIRC(disp) : 0.
end