Re: [Parseperl-discuss] My dev plans

[Adam K. <ad...@ph...>]

The Number::Unicode thing is an odd one.

As I understand it, a number like 123.123.123.123 (yes, that looks like 
an IP) or any sequence of numbers seperated by dots is parsed as some 
sort of literal unicode sequence.

I'm still a little fuzzy on the exact details, but apparent it's 
something odd like that.

So we need a Number::Unicode to represent that.

As for decimal, my gut says we need to make the base class completely 
abstract. I guess it's less likely to be ::Number::Decimal and more 
likely something similar to Number::Real, unless we split into 
Number::Decimal and Number::IEEE or something for the odd cases.

But talk to Audrey in #perl6 about the unicode thing, she knows more.

Adam K

Chris Dolan wrote:
> On Sep 22, 2006, at 12:06 AM, Adam Kennedy wrote:
> 
>> Audrey had the right idea.
>>
>> Instead of having a ->base or whatever, we should be subclassing 
>> Number into a set of subclasses, one for each type of number Perl 
>> supports.
>>
>> So Number::Boolean, Number::Hexidecimal, Number::Unicode etc
>>
>> So ignoring the parsing half, I'd start by setting up the subclasses, 
>> and then look at how the implementation we need fits into that model.
> 
> Excellent.  That sounds like a good approach to me.  But I don't know 
> what Number::Unicode means...  Also, should there be a Number::Decimal, 
> or should that just be Number.pm?
> 
>> But I'm pretty excited about this, since I've wanted it done for ages.
>>
>> And with ->literal working at the Number level, it's fairly easy to 
>> start pushing it upwards, add support for strings, and anonymous 
>> hashref constructors and so on, until we can handle any arbitrarily 
>> deeply nested thing, so long as it is all literals with no need to 
>> resort to the Perl interpreter (and thus avoid the Halting Problem 
>> issues).
>>
>> Are you planning on branching SVN for this? Or should we just release 
>> 1.118 and then you can hack away at the trunk. (I'm cool with either)
> 
> Trunk, I think.  I'm an intermittent hacker ($kid and $job), so a branch 
> would probably just bitrot.  My "short term" means about a month.
> 
> In any case, my first task will be test coverage, as I said before.  I 
> want to get the current stuff debugged before adding new features.
> 
> Chris
> 
> P.S.
>   Is "hexidecimal" some odd aussie spelling for hexadecimal?  :-P
>   I inferred from the POD today that it pains you to spell 
> "tokeniser"/"tokenizer"!
>   I tried really hard not to americanize the spelling all over the POD 
> this morning...
> 
> -- 
> Chris Dolan, Software Developer, http://www.chrisdolan.net/
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> 
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