Assignment 4 (4%)

• Write a program that parses a PL program and prints it back in
  1. Correct PL syntax
  2. Prefix abstract syntax

Example Output

PL-Syntax:
X1<=0;
loop X2;
goto l12;
endloop;
l12: X1++;

Abstract Syntax:
(<program> (<assign0> NoLabel X1)
(<program> (<loop> NoLabel (<program> (<goto> NoLabel l12)
(<program> )
)
)
(<program> (<inc> l12 X1)
(<program> )
)
)
)