Closure of Item: Example 1/2
22/42
G’expr1 = (N, T, P, E’), where N = {E’, E, F, T}, T = {i, +, *, (, )},
P = {   0: E’ ® E, 1: E ® E+T, 2: E ® T,    3: T ® T*F,
  4: T ® F, 5: F ® (E), 6: F ® i        }
Task: Closure(I) for I = E’ ® ·E
Closure(I) := {E’ ® ·E}
1) E’ ® ·E Î Closure(I) and E ® E+T Î P:
     add E ® ·E+T to Closure(I)
Closure(I) = {E’ ® ·E, E ® ·E+T}
2) E’ ® ·E Î Closure(I) and E ® T Î P:
     add E ® ·T to Closure(I)
Closure(I) = {E’ ® ·E, E ® ·E+T, E ® ·T}
3) E ® ·T Î Closure(I) and T ® T*F Î P:
     add T ® ·T*F to Closure(I)
Closure(I) = {E’ ® ·E, E ® ·E+T, E ® ·T, T ® ·T*F}