[antlr-interest] 3.0 multiple language support

[Tiller, Michael (M.M.)]

> From: Terence Parr [mailto:parrt at cs.usfca.edu]
> Subject: Re: [antlr-interest] 3.0 multiple language support
> 
> 
> On Jul 30, 2004, at 10:38 PM, Tom Moog wrote:
> 
> >
> > The problem of maintaining one grammar with language
> > dependent actions may be partly due to our inclination
> > to think of grammars as simple text files.  Imagine that
> > we used a text editor which could maintain multiple
> > versions of a file.  Such things exist for technical
> > documentation.  I remember reading that this was used
> > for airplane maintenance manuals so that common
> > features were updated for all airplanes, while
> > new models could have custom sections.  A printout
> > was customized according to the model selected.
> 
> Yes, this is what we've considered for an IDE: use revision control
not
> inheritance to change actions.  You are essentially forking a new
> branch.  Changes can be pushed forward with diff3 like behavior. :)

Is it April 1st already?  Geez, I guess it isn't.  Well in that case I
have to assume you are serious so I'd like to cast a vote against using
version control to handle language-independence.  Apart from the fact
that inheritance and/or macros are a much better solution, consider how
you would do *real version control* under such circumstances...branches
on branches?!?  Yikes!

> Ter

--
Mike



 
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