On 28 Apr., 14:36, Marco van de Voort <mar...@[EMAIL PROTECTED]
> wrote:
> On 2008-04-26, Scott Moore <sam...@[EMAIL PROTECTED]
> wrote:
>
> > Of course, it is debatable what GPLing a public domain software
> > means, since anyone can take the old, public domain version of
> > the P4 compiler and do whatever they want with it, without
> > regard to the GPL.
>
> Agree fully.
>
> > It seems to me that what you would be effectively doing by
> > taking a P4 or P5 compiler, changing it and GPLing that, would
> > be that nobody could use your version of the compiler without
> > obeying the GPL.
>
> While I totally agree with you that slapping GPL on each and everything
is
> unnecessary, it is more the recycling of the compiler source than using
it
> that is limited by the GPL.
As I explained in the another mail. I plan to release a
Seed7 version of the P4 under the GPL. For this version
(or a later improved Seed7 version of the P4) it would
be interesting to take extensions from other sources.
Therefore I asked for the GPL compatibility.
BTW.: Seed7 is my attempt to improve the ideas of Pascal.
Seed7 programs look familiar for Pascal programmers.
The compilation of Seed7 is not possible with the technic
used by the P4. Seed7 allows user defined statements,
operators and abstract data types. Therefore a hardcoded
parsing like in the Pascal compilers is not possible.
Instead I use a table driven LL(1) algorithm to parse.
I am not iterested to do a Seed7 version of the P4 to
learn compiler construction, but to give a Seed7 example
of how a Pascal compiler works. So for me it is an
iteresting test case and I plan to add the p4.sd7 to the
Seed7 package and to the Homepage, when it is finished.
The final poli****ng will take some time, so don't hold
your breath.
Greetings Thomas Mertes
Seed7 Homepage: http://seed7.sourceforge.net
Seed7 - The extensible programming language: User defined statements
and operators, abstract data types, templates without special
syntax, OO with interfaces and multiple dispatch, statically typed,
interpreted or compiled, ****table, runs under linux/unix/windows.
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