【判断题】In operator-precedence parsing, we define three disjoint precedence relations between certain pairs of terminals. a b b has lower precedence than a
【判断题】Using definitions To Construct Operator Precedence Relations: 1 a ≒ b Û P→...ab... or P→..aQb... 2 Definition Û FIRSTVT(P)={a|P ⇒+ a... or P ⇒+ Qa...} LASTVT(P)={a|P ⇒+ ... a or P ⇒+ ... aQ} If there ...