Am 24.01.2011 13:08, schrieb Ville Koskinen:
1. How stable are PCT, PGE and NQP? (Or is it just NQP nowadays?) In other words, if I start writing an HLL implementation today for Parrot 3.0.0, will the implementation still work on Parrot 4.0?
NQP is fairly stable. It's a (mostly) subset of Perl 6, and hasn't changed much recently (except in cases where functionality has been added).
I don't know if the deprecation policy covers NQP, but I don't think there will be stability guarantuees between two major version numbers (and thus 4 "supported" releases, iirc).
But notice that even if NQP stays stable, your programs can still break if you call API methods that change.
but based on existing implementations (Rakudo in particular), it doesn't seem possible to write a full compiler with just NQP;
Note that significant parts of Rakudo's PIR predate NQP (or at last the NQP-rx variant), and just haven't been ported to a more high level language since then. The presence of PIR code doesn't always imply it's necessary to have that piece of code in PIR.
Cheers, Moritz _______________________________________________ http://lists.parrot.org/mailman/listinfo/parrot-dev
