On Sun, 3 Aug 2003, K Stol wrote:
> > What do you think? Want to try squishing pirate/python
> > and pirate/lua together? :)
>
> Yeah, I like the idea. Let's try this out.
Well, I finished reading your report[1] and
posted some of my (rather unorganized) thoughts
up at [2]
It does seem like there are some snags getting
languages to talk to each other, even with the
calling conventions, but even so, I'm even more
convinced now that a generic, overridable
code-generator is the way to go.
It seems to me that if we want to maximize the
number of languages using it, the generic
compiler shouldn't depend on anything but
C and parrot... But until we get it working,
I'd like to stick to a dynamic language like
python/perl/lua/scheme. And, well, my code's
already in python... :) [though I'd actually
love to try out some lua 5]
What I'm picturing is a template system for
specifying chunks of IMCC. Something like this:
ast generic:
on @while(test, body):
% while = gensym("while")
% endwhile = gensym("endwhile")
% test = gensym("$I")
{while}:
{test} = @expr
unless {test} goto {endwhile}
@body
{endwhile}:
on @if(test, elif*, else?):
...
ast python(generic):
on @while(test, body, else?):
...
Okay, I don't have a good syntax in mind yet,
the point is it's a template language and you
can subclass/override/extend the template.
Maybe there's no syntax and it just uses
cleanly coded classes in some oo language.
Or perl6 with it's grammars and rules. I
don't know.
Once the templates are defined, you pass
the compiler your AST and it walks it and
applies the template.
So the C api basically is just about building
the tree and saying "generate with this
language file". Then the language designer's
job is just to transform an outside ast
into a generic ast.
Anyway, I'm talking a lot of nonsense. I'd
rather just see what I can do about decoupling
my code generator from python and sharing
it with another language instead.
[1] lua report: http://members.home.nl/joeijoei/parrot/report.pdf
[2] http://pirate.versionhost.com/viewcvs.cgi/pirate/INTEROP?rev=1.1
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-------------------------------------
contact: [EMAIL PROTECTED]
hosting: http://www.cornerhost.com/
my site: http://www.withoutane.com/
--------------------------------------
