[antlr-interest] Breaking a loop
Bryan Ewbank
ewbank at gmail.com
Sat Nov 5 04:45:54 PST 2005
Correct me if I'm wrong, or if the example was over-simplified, but
isn't this equivalent?
( ( state_end ) => state_end { break; }
| .
)*
No need to chew through the (io_opt)* because it will /always/ match
just before a state_end.
It's still the same fundamental problem, but it is perhaps easier to
think about...
On 11/4/05, John Green <greenj at ix.netcom.com> wrote:
> I've got a pre-existing language with a requirement like this:
>
> ( ( (io_opt)* state_end )=> (io_opt)* state_end {break;}
> | .
> )*
>
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