Trans.: RE: [antlr-interest] Beginer's question, not fitting in subject

[Scott Stanchfield]

IBM's Cross-System Product?

Still looks like a space-delimited, line-oriented input. Is that's the case,
I wouldn't take the learning curve or overhead of a parser generator...

Later,
-- Scott 

> -----Original Message-----
> From: antlr-interest-bounces at antlr.org 
> [mailto:antlr-interest-bounces at antlr.org] On Behalf Of Alexandre
> Sent: Saturday, April 09, 2005 12:28 PM
> To: antlr-interest at antlr.org
> Subject: Trans.: RE: [antlr-interest] Beginer's question,not 
> fitting in subject
> 
> 
> Thank you for your answer.
> 
> So I suppose this means that my feeling was right, to let 
> Java checking it...
> 
> But the problem is a litte bit more tricky. The syntax I have 
> is imposed, and is different of what I gave. It is precisely this :
> V= [4,5,6]
> sr1 ac1	T
> sr1 ac1	NT
> sr1 ac2	NT
> sr2 ac1	T
> sr2 ac1	NT
> sr2 ac2	T
> sr2 ac2	NT
> (It represents a CSP constraint if it does mean something to 
> you, V are the variables, then follow the values that they 
> are allowed to have, in the same order). Of course lines do 
> not have more importance than spaces or tabs. I could have V= 
> [4,5,6] sr1 ac1 T sr1 ac1 NT which is right, but V= [4,5,6] 
> sr1 ac1 T sr1 ac1 or V= [4,5,6] sr1 ac1 T sr1 ac1 NT sr1 are wrong...
> 
> So I should have a rule only for each value (sr1, NT, ...), 
> then put Java instructions to build dynamically the (here) 
> three elements collections, as Tokens come, and throw an 
> error if something is missing. In fact this syntax is 
> simpler, we don't need RegEx's (maybe that's why I've been 
> given it). Do you think that's good, or have other suggestion ?
> 
> Thank you again,
> 
> Alexandre
> 
> Selon Scott Stanchfield <scott at javadude.com>:
> 
> > I should note that I meant to use the RegEx for each line after 
> > reading the line using the BufferedReader.
> >
> > Later,
> > - Scott
> >
> > > -----Original Message-----
> > > From: antlr-interest-bounces at antlr.org 
> > > [mailto:antlr-interest-bounces at antlr.org] On Behalf Of Scott 
> > > Stanchfield
> > > Sent: Saturday, April 09, 2005 11:29 AM
> > > To: 'Alexandre'; antlr-interest at antlr.org
> > > Subject: RE: [antlr-interest] Beginer's question, not fitting in 
> > > subject
> > >
> > > Seriously... I think ANTLR is overkill for items like this.
> > >
> > > Whenever you have line-oriented input and all lines have the same 
> > > format, I'd recommend using good old BufferedReader to read the 
> > > lines and StringTokenizer to separate them.
> > >
> > > If you want a little more checking to see if the parens 
> and commas 
> > > are actually there, then you'll want to use a Java regular 
> > > expression (Pattern +
> > > Matcher) if you can use Java 1.4 or later.
> > >
> > > Hope this helps!
> > > -- Scott
> > >
> > > > -----Original Message-----
> > > > From: antlr-interest-bounces at antlr.org 
> > > > [mailto:antlr-interest-bounces at antlr.org] On Behalf Of Alexandre
> > > > Sent: Saturday, April 09, 2005 11:23 AM
> > > > To: antlr-interest at antlr.org
> > > > Subject: [antlr-interest] Beginer's question, not fitting in 
> > > > subject
> > > >
> > > > Hello,
> > > >
> > > > I have a classic, I guess, question. The language I am 
> trying to 
> > > > define cannot be represented by a grammar, as it is of the form 
> > > > (a)n(b)n. What my file must do is something like defining
> > > tuples, that
> > > > is series of elements. Suppose that the syntax to 
> define a serie 
> > > > of values a serie of variables can have is something like :
> > > > (X1, X2, X3)
> > > > (1, 2, 3)
> > > > (4, 5, 6)
> > > >
> > > > Of course the number of variables is totally arbitrary, 
> but for a 
> > > > given number, the number the values in each following tuple
> > > of values
> > > > must be the same. How can I make that with antlr ? I
> > > thought about not
> > > > having antlr detecting it, that is to accept any list 
> of the form
> > > > (..,..) for the values, and then treat (in Java) the result
> > > of each,
> > > > and throwing if necessary an exception. But that isn't pretty 
> > > > beautiful.
> > > >
> > > > Do you have any suggestion ?
> > > >
> > > > Thank you,
> > > >
> > > > Alexandre
> > > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> >
> 
> 
> 
> ----- Fin du message transféré -----
> 
>