[antlr-interest] Error recovery

[jduquevieira]

Hello.

I have a math editor that uses ANTLR as the parser.
Now I have problems recovering from errors.

For instance, if the user writes:
    "2+"

The parser can't handle it, because it expects another number after 
the sum operator:
    "2+<number>"

I've tried to handle it with exceptions and got no good results.
Besides, by using exceptions the parser gets too slow.

I've also tried to write every possibility in every rule, but I get 
a lot of ambiguities.

Does anyone know how to do this?
Any ideas?

Thanks in advance.
Best regards.



 
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