[antlr-interest] new fish with binary file scanning problem

Qihui Zhang qzhang at mcs.suffolk.edu
Mon Aug 22 10:44:39 PDT 2005


Hi,
   I'm trying to scan/parse the binary file, which has part header 
decription like this.

   Field        Type
   [N]bits      UB(5)
    A           SB(N)
    B           SB(N)

   since A and B have to be determined by the first 5 bits, I'm sort of 
stuck on how to define my lexer to have dynamic processing. is there any 
good solution or idea on dynamically parsing, something like Syntactic 
Predicates

http://www.antlr.org/doc/metalang.html#SyntacticPredicates

Thanks a lot~~


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