negative matching using Smacc
Damien Cassou
damien.cassou at laposte.net
Sat Dec 30 10:01:22 UTC 2006
Damien Pollet a écrit :
> Hi,
>
> I'm using SmaCC to parse a line-oriented file format. I'm only
> interested in some lines that begin with known keywords, and I want to
> ignore all other lines without knowing their format.
>
> At the moment I have a scanner rule like this:
> File : ((InterestingLine | JunkLine) <newline>)* ;
>
> but how do I define JunkLine to match anything BUT interesting lines?
You should be able to define a priority between rules.
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