[antlr-interest] C TARGET: Strange No Viable Exception

[Jim Idle]

Do you have a trailing newline?

Jim

> -----Original Message-----
> From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-
> bounces at antlr.org] On Behalf Of register
> Sent: Monday, March 26, 2012 11:10 AM
> To: antlr-interest at antlr.org
> Subject: Re: [antlr-interest] C TARGET: Strange No Viable Exception
>
> I have just discovered another detail that could be useful to
> troubleshoot the issue:
>
> when I create the lexer stream directly from an input file using
> "antlr3FileStreamNew" I get no error at all; when I use
> antlr3StringStreamNew to create the stream from a string in memory I
> get the No viable exception.
>
> Luca
>
>
> On Mon, Mar 26, 2012 at 7:28 PM, register <register72 at gmail.com> wrote:
>
> > Hi all,
> > I have an antlr generated C  lexer that keeps on throwing several
> "No
> > Viable Exceptions" just at the end of the file. I have developed the
> > grammar in AntlrWorks and the Java Lexer doesn't have any trouble at
> all.
> > The  ANTLR3_EXCEPTION struct passed to the "
> >
> > displayRecognitionError" method does not carry any useful
> information:
> >
> > - expecting, token and expectingSet are all null
> > - there is a mysmatch between the type and name field: type is 3
> > (ANTLR3_NO_VIABLE_ALT_EXCEPTION) and name is
> > "org.antlr.runtime.RecognitionException".
> >
> >
> > However it seems that the grammar is always able to complete a
> > successful parse of the files. I have made several attempts with
> > various input and the results I get are always correct. Still this
> "No
> > Viable Exceptions" is pretty annoying.
> > How could I debug this issue?
> >
> > Regards,
> > Luca
> >
> >
> >
> >
> >
> >
> >
>
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