CODEWITHSUNDEEP
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montag
montag

Reputation: 243

EBNF Colon and Semicolon usage?

I have no idea what a colon means in BNF or EBNF. It's not listed anywhere on the internet. Anyway, my professor decided to assign it in the homework. I think he is confusing it with a semicolon or something. I'm still not even sure what the semicolon means. Here is some context:

Given the following CFG (context free grammar) for declarations:

D -> D ; D
D -> id : T
T -> char
T -> integer

Give an attribute grammar that defines type of an identifier (id stands for identifier).

Anyone think they can help?

Upvotes: 0

Views: 1916

Answers (1)

Eran Zimmerman Gonen
Eran Zimmerman Gonen

Reputation: 4507

; and : are simply terminals, just like id, char and integer. So your code could be something like this: 

x : char ; y : integer ; z : char

Upvotes: 1

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