[rules-dev] RFC: declaration syntax

[Edson Tirelli]

   Hehehe, always good to have your help. As you will see the skip one and
skip all tokens strategies are implemented. The "inject a token" and try
again is not, as that is a lot more complicated to do it and maintain
manually.

   Edson

2011/7/27 Wolfgang Laun <wolfgang.laun at gmail.com>

> On 27 July 2011 15:34, Edson Tirelli <ed.tirelli at gmail.com> wrote:
>
>>
>>    Just to explain how the parser recovers from errors, it tries to skip a
>> token that fail to match the construct being parsed. If that still fails, it
>> will skip all tokens until it finds the start of a top level construct (i.e.
>> a statement like a rule, query, declare, etc) and resynch from there. If you
>> have too many different top level keywords, it increases the probability
>> that there will be a keyword clash and it will fail to resynch, resulting in
>> cobolish errors for the rest of the file... :)
>>
>
> I think I'll read the parser once more, with an eye out for recovery ;-)
> -W
>
>
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-- 
  Edson Tirelli
  JBoss Drools Core Development
  JBoss by Red Hat @ www.jboss.com
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