[antlr-interest] generating nice error messages

[Jim Idle]

On Wed, 2008-08-20 at 14:01 +0200, Gerard van de Glind wrote:
> Hi all,
> 
>  
> 
> Which options do I have to generate nice error messages with ANTLR
> when the grammar contains rules that have the backtrack option set to
> true?
> 
>  
> 
> The problem I have with backtracking rules is that I lose detail about
> the exceptions that occur.
> 
> This is because the exception is delayed until the backtracking rule
> has no other alternative left.


This is a side effect - you need to not use backtracking or use it
sparingly on just those rules that might benefit. You should probably
regard backtracking as a prototyping option.


Jim
> 
> 
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