[Haskell-cafe] Looking for maintainers or comaintainers on my Haskell projects

Ben Franksen ben.franksen at online.de
Thu Mar 16 21:26:41 UTC 2017

Am 15.03.2017 um 17:15 schrieb Mario Blažević:
> On 2017-03-15 10:20 AM, Christopher Done wrote:
>> I'm not sure that anyone's using it. I originally found it on John
>> Meacham's web site and offered to push it to Hackage. It hasn't been
>> touched since. I once decided to sit down and modernize it, but realized
>> I don't actually understand any of the laziness tricks in it.
>     I'm comfortable with laziness tricks, somewhat less so with
> "numerous unsafe optimization hacks".
>> Anybody's welcome to pick it up and take it to the cleaners!
>     Ok, I'll take it. My GitHub account is blamario. I don't suppose
> John Meacham would be interested?

I am glad my remark didn't scare you off, in retrospect my wording was 
perhaps a bit strong. Yes, John did a lot to make things as lazy as 
possible to avoid excessive memory consumption (cool to say that, isn't 
it). There is also some ugly type casting (unsafeCoerce) going on, since 
the parser keeps the alternatives in an array (remember that this is a 
packrat parser).

Unfortunately I can't spare the time to work on this ATM. But I would be 
glad if you would revive the project. PEGs offer some unique advantages 
for day-to-day parsing tasks, where you can't be bothered to write a 
separate lexer or mess around with 'try' until your harmless looking 
grammar actually accepts the source language. A fair portion of these 
can nowadays be handled nicely with regex-applicative (many file formats 
are actually regular) but now and again there is one where you need the 
power of a CFG.


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