Re: [imp-dev] IMP for a lisp-like language (clojure)

[Jurgen Vinju <jurgen@xxxxxxxxx>]

Hi Laurent,

The "Box" (not Block) tools are available for MacOSX as well now. That
being said,
I've yet to receive any external feedback (either positive or
negative) on the formatting
architecture for IMP, so please consider it alpha/beta quality.

In terms of efficiency, the current implementation has definite room
for improvement.
I can't be precise, but I guesstimate a 4000 line clojure program
would take 5 seconds or so
on a fast machine to format (independent of parsing to an AST). Maybe more.

I don't think it's necessary to reimplement your parser, although I
suspect that for clojure that
would not be a big thing to do. What is necessary is to extend your
parser with "meta variables"
such that you can use the IMP formatters' pattern matching facility.

Cheers,

Jurgen

On Mon, Jul 20, 2009 at 11:47 PM, Laurent PETIT<laurent.petit@xxxxxxxxx> wrote:
> Hello,
>
> I'm considering testing IMP to port some (or most ?) parts of an open source
> project for providing an Eclipse based IDE for the clojure JVM language.
> Clojure is a lisp-like language, so I have the feeling that IMP could be
> more appropriate than DLTK if I want to stop reinventing the wheel by doing
> low level stuff with the "raw eclipse provided APIs".
>
> Nevertheless, I read past one of the tutorials concerning how to add code
> formatting and the following questions hit me:
>
>  * I remember having read that there could be improvements in performance.
> This may be a concern, because some lisp files tend to be rather large (it's
> not uncommon for certain files to be more than 4000 lines, so in these
> cases, the tools need to be responsive). How would you say IMP would behave
> ? (Provided, for example, that I rewrote the clojure grammar using LPG ?)
>  * I remember having read that a dependency on something called "Block" is
> required, and that it is available only for Windows and Linux. But *lots* of
> clojure developers are using Macs, so I was wondering whether this
> constraints (not being able to use IMP for code formatting) was still
> present now, on July 2009 ? (maybe the pdf is outdated concerning the
> constraints ...)
>
> Thanks in advance for your answers,
>
> Regards,
>
> --
> Laurent
>
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