COP - 4620/5625 - Programming Language Translators



        Project Two - Non-Simple Extensions to Tiny


Make  the  following   changes   to   the   Tiny   compiler-
interpreter:

     1)   Allow multiple  expressions  in  a  single  output
          statement.

     2)   Add a "for" statement, a la Pascal, in two flavors:
	  'upto' and 'downto'.

     3)   Add a "repeat" statement.

     4)   Add a "case" statement.

     5)   Add a "loop-pool" statement, with an  exit  state-
          ment.

     6)   Make the  "else"  clause  in  the  "if"  statement
          optional.

     7)   Add a "swap" operator, i.e.  A :=: B;


The repeat loop is similar to the while loop, and  items  1)
and 6) above are easy anyway.  Details (and some suggestions
for solving these mysteries), in class.


DUE DATE: Friday, October 19.