Re: What is a Parser Skeleton?

[Johannes Veit]

Your response time is awesome :)
Thanks a lot, I think I have all the info I need.

If not, I come back to you.


Adieu and have a nice time,
Johannes Veit

Hans Åberg <haberg-1@telia.com> schrieb am Mi., 12. Apr. 2023, 13:24:

> [Please cc the Bison list, as others can follow the issue and tune in if
> needed.]
>
> > On 12 Apr 2023, at 11:18, Johannes Veit <leerstring@gmail.com> wrote:
> >
> > Hello and sorry for the long pause and tanks for your explanation!It
> makes sense, but I don’t see a proper connection to the Bison Exception.
> >  In my understanding of the text, the exception comes in place, when I
> (as a user of bison) going to build an own parser generator using bison.
> …
> > My interpretation is, that it is more than protecting the rights of the
> skeletons, it is rather a protection against a forked* parser generator
> under e.g. proprietary terms.
> > *forked=>I know, that it is not forking in the sense of forking a repo.
> What I mean is: using bison to generate it, instead of writing it with own
> hands
>
> In my interpretation, there are two parts:
>
> The skeleton file contains handwritten parts which are subject to
> copyright, and in normal use is copied over to the generated parser. So one
> wants to avoid the full GPL to apply, thereby restricting the copyright of
> the program it is a part of. The same thing is used for C/C++ libraries:
> you can write and compile, if you so will, proprietary programs using GCC
> and distribute them without GPL applying to them.
>
> In addition, for special use, one may copy the whole skeleton, modify it,
> and include it in a program, as though it was LGPL, but not if that program
> is in itself a parser generator that generats parsers; then the full GPL
> will apply for that program.
>
> This latter, to make ones own edited skeleton file, I do not recommend
> unless it is really needed, because it may change between Bison versions,
> and it is hard to keep it in sync. So it is better trying to get special
> feature into the Bison project.
>
>
>