Re: Supporting multiple input syntaxes

On Thursday, August 13, 2020 at 5:24:36 PM UTC-5, minf...@arcor.de wrote:
> Am Donnerstag, 13. August 2020 00:32:56 UTC+2 schrieb luser droog:
> > I've got my project successfully parsing the circa-1975 C syntax
> > from that old manual. I'd like to add parsers for K&R1 and c90
> > syntaxes.
> >
> > How separate should these be? Should they be complete
> > separate grammars, or more piecewise selection? ...
>
> Why not settle for one master dialect and use awk to translate between dialects?
>
> [Probably because there is a great deal of C code written to comply with
> the various versions of the standard, users want error messages that match
> the code they wrote rather than some intermediate code, and it would be quite
> an awk program that could reconcile all the differences among C flavors. -John]


One of the possible goals for this project is exactly such a translator
that can downgrade or upgrade code from one standard version to another.


Another possible application is a source code formatter. Currently the
CST produced by the parser keeps all the original whitespace attached
to each token.

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