📄 bnf.bad
字号:
(* example of incorrect set of productions *)
EBNF = { Production } .
Production = nonterminal "=" Expression "." .
Expression = Term { "|" Term . (* missing closing } *)
Term = Factor { %%% Factor } . (* includes invalid characters *)
Factor =
nonterminal
| terminal
| "[" Expression "]"
| "(" Expression ")" ) (* has spurious closing ) *)
| "{" Expression "}" .
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