Re: Code snippets for the perl 6 compiler

[Dan Sugalski]

At 2:15 PM -0500 5/10/04, Allison Randal wrote:
Dan Sugalski wrote:
 I think the first step here is to get the low-level perl operations
 defined, and their parrot translations worked out. For this I mean
 that we need to have a list of:
    Perl:
       a = b + c;
    Parrot:
       add a, b, c
 I expect things like the foreach loops to be slightly more difficult.
 :) Anyway, with this we're in a good position to do the source
 transformations, as well as see where Parrot's still lacking.
 (Namespaces and lexical pads, for one, which is on the hit list after
 I finish the event stuff)
I'll be a long list. :) Certainly possible. Any preferences on format?
I'm not sure. Lacking a better option, there's:

  =head2 addition

   =over 4

   =item Perl

      a = b + c

   =item Parrot

      add a, b, c

Not particularly machine readable, but...

 > Getting a full grammar worked out is also in order. It's *probably* a
 good idea to do it up as a Perl 6 grammar, though given that we don't
 have a perl 6 grammar engine yet it might be better to go with
 something more traditional and transform it later.
You looking for something BNF-ish?
For now I think that's best.

 > Doing the same for regular expressions (perl 5 and perl 6 styles) is
 also in order, though some of that meshes in with the string stuff
 we're still fighting over.
Is there anything similar already existing for Perl 5 regexen?
I think languages/regex/lib/Regex/Grammar.y is the perl 5 regex grammar.
--
                                        Dan
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