[antlr-interest] Pattern for returning errors from ANTLR in data structures, not STDERR

[Terence Parr]

Check ANTLRToolListener in antlr source or whatever. it has a similar problem to solve.
Ter
On Nov 30, 2010, at 5:13 PM, Arthur Goldberg wrote:

> Hello All
> 
> My ANTLR parser is embedded in other code. I've decided that reporting 
> errors out of the parser would be better handled as a list of errors, 
> not exceptions, so that the parse is allowed to recover from errors and 
> complete, if possible.
> Does anyone have a working pattern for returning errors from ANTLR in a 
> list, not STDERR?
> In more detail, I'd run it in two modes:
> 1) testing: call some rule other than the root
> In this case, I will let the rule report an error via an exception.
> 
> 2) production: call the root rule
> In this case, a newReportError() in
> 
>     catch (RecognitionException re) {
>         newReportError(re);
>         recover(input,re);
>     }
> 
> would catch exceptions thrown by other rules, and store them in a list. 
> When the root rule returns, it returns the list of errors, along with 
> the results of the parse.
> 
> If someone can help me with this, I'll make it worth your while. I'm 
> running out of time for messing with ANTLR.
> 
> Thanks
> Arthur
> 
> 
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