[#93964] perl6 grammar rules in ruby — Charles Comstock <cc1@...>

Has anyone taken a look at the idea of having embedded grammars in ruby

21 messages 2004/03/01

[#94023] Why's (Poignant) Guide to Ruby, Chapter Four: Little Leaves of Code — why the lucky stiff <ruby-talk@...>

Just wanted everyone to know that Chapter Four of the (Poignant) Guide

15 messages 2004/03/01

[#94037] Rubyx OS (Ruby oriented linux distro) — Andrew Walrond <andrew@...>

I am pleased to announce the first public release of Rubyx, codename

39 messages 2004/03/02

[#94062] pickaxe with pics? — Dick Davies <rasputnik@...>

17 messages 2004/03/02

[#94068] dynamic assignment of instance variables — gv@... (Gerard A.W. Vreeswijk)

$ cat try.rb

19 messages 2004/03/02

[#94110] why are Hashes so unsorted? what's your solution? — Ruby Baby <ruby@...>

I try to avoid questions like "Why doesn't Ruby do what ___ does?"

14 messages 2004/03/03

[#94144] Mozilla gets support for other client-side languages in the future, how about Ruby? — Erik Terpstra <erik@...>

Interesting slides:

9 messages 2004/03/03

[#94190] rescue inside block -> syntax error — Simon Strandgaard <neoneye@...>

While reading this message:

15 messages 2004/03/04

[#94424] random range — Charles Comstock <cc1@...>

Why doesn't rand take an integer range and then generate a random number

23 messages 2004/03/06
[#94432] Re: random range — Hal Fulton <hal9000@...> 2004/03/06

Charles Comstock wrote:

[#94434] Re: random range — Joel VanderWerf <vjoel@...> 2004/03/06

Hal Fulton wrote:

[#94436] Re: random range — "David A. Black" <dblack@...> 2004/03/06

Hi --

[#94487] Looking for HTML templating system — Andreas Schwarz <usenet@...>

I am looking for a templating system for my forum

19 messages 2004/03/07

[#94517] proposal: class<<obj to invoke extend_object — Simon Strandgaard <neoneye@...>

'obj.extend' and 'class<<obj' are close cousins..

22 messages 2004/03/07

[#94612] RedCloth 2.0.2 -- A Textile Humane Web Text Generator — why the lucky stiff <ruby-talk@...>

For your immediate perusal and swift renouncement:

10 messages 2004/03/09

[#94672] saving array — mopthisandthat@... (Phidippus)

After I do bunch of computations and create a huge array with bunch of

18 messages 2004/03/10

[#94686] Possibility of 2nd edition of _The Ruby Way_ — Hal Fulton <hal9000@...>

Hello, all.

17 messages 2004/03/10

[#94760] convincing a webhost to support ruby — Mark Hubbart <discord@...>

Hi all,

15 messages 2004/03/11

[#94813] Jruby 0.7.0 — Thomas E Enebo <enebo@...>

20 messages 2004/03/12
[#94815] Re: [ANN] Jruby 0.7.0 — gabriele renzi <surrender_it@...1.vip.ukl.yahoo.com> 2004/03/12

il Sat, 13 Mar 2004 02:33:49 +0900, Thomas E Enebo <enebo@acm.org> ha

[#94817] Re: [ANN] Jruby 0.7.0 — Thomas E Enebo <enebo@...> 2004/03/12

On Sat, 13 Mar 2004, gabriele renzi defenestrated me:

[#94935] RubyGems 0.2.0 — Chad Fowler <chad@...>

The first public release of RubyGems (http://rubygems.rubyforge.org)

26 messages 2004/03/14

[#94985] GUI testing on unix — Simon Strandgaard <neoneye@...>

I am curious to if there exists any GUI testing packages for unix.

17 messages 2004/03/16

[#94998] RAA trouble and maintenance — "NAKAMURA, Hiroshi" <nahi@...>

Hi,

14 messages 2004/03/16

[#95014] RAA - So much is broken — Lothar Scholz <mailinglists@...>

Hello,

15 messages 2004/03/16

[#95060] YAML tutorial — Matt Lawrence <matt@...>

Ok, I am so not a Ruby wizard. In fact, I don't do much development at

15 messages 2004/03/17

[#95098] groovy — David Garamond <lists@...6.isreserved.com>

Groovy, a scripting language targeted for JVM, was mentioned in Slashdot

14 messages 2004/03/17

[#95155] Installer packages for MacOSX — Mark Hubbart <discord@...>

Hi, all

18 messages 2004/03/17

[#95190] Thinking about a date-matching algorithm... — Hal Fulton <hal9000@...>

I did a little swapping of ideas with dblack on this. Now I'm

22 messages 2004/03/18

[#95200] Log4r 1.0.5 now with RubyGems option — Leon Torres <leon@...>

Greetings, I'm pleased to announce the release of Log4r 1.0.5. The

11 messages 2004/03/18

[#95230] Ruby and Mozilla — paul vudmaska <paul@...>

--- Simon Strandgaard <neoneye@adslhome.dk <http://us.f104.mail.yahoo.com/ym/Compose?To=neoneye@adslhome.dk&YY=90525&order=down&sort=date&pos=0&view=a&head=b>> wrote:

12 messages 2004/03/18

[#95290] calling outer-scope method of same name — "Bill Kelly" <billk@...>

Hi all!

16 messages 2004/03/18
[#95292] Re: calling outer-scope method of same name — "David A. Black" <dblack@...> 2004/03/18

Hi --

[#95340] Kwartz (2004-03-19) released — Makoto Kuwata <kwa@...>

Hi folks,

31 messages 2004/03/19
[#95367] Re: [ANN] Kwartz (2004-03-19) released — Andreas Schwarz <usenet@...> 2004/03/19

Hi,

[#95405] Re: [ANN] Kwartz (2004-03-19) released — Andreas Schwarz <usenet@...> 2004/03/19

Makoto Kuwata wrote:

[#95412] Re: [ANN] Kwartz (2004-03-19) released — Makoto Kuwata <kwa@...> 2004/03/19

Andreas,

[#95453] Re: [ANN] Kwartz (2004-03-19) released — Andreas Schwarz <usenet@...> 2004/03/20

Makoto Kuwata wrote:

[#95484] Re: [ANN] Kwartz (2004-03-19) released — Makoto Kuwata <kwa@...> 2004/03/21

[#95490] Re: [ANN] Kwartz (2004-03-19) released — Thomas Fini Hansen <beast@...> 2004/03/21

On Sun, Mar 21, 2004 at 11:39:26AM +0900, Makoto Kuwata wrote:

[#95518] Re: [ANN] Kwartz (2004-03-19) released — Andreas Schwarz <usenet@...> 2004/03/21

Makoto Kuwata wrote:

[#95553] Re: [ANN] Kwartz (2004-03-19) released — Andreas Schwarz <usenet@...> 2004/03/22

Makoto Kuwata wrote:

[#95386] Can $LOAD_PATH be relative? — ptkwt@... (Phil Tomson)

24 messages 2004/03/19
[#95389] Re: Can $LOAD_PATH be relative? — ptkwt@... (Phil Tomson) 2004/03/19

In article <wsqk71gd188.fsf@io.com>, Jim Menard <jimm@io.com> wrote:

[#95398] Re: Can $LOAD_PATH be relative? — Patrick Bennett <patrick.bennett@...> 2004/03/19

Phil Tomson wrote:

[#95400] Re: Can $LOAD_PATH be relative? — "David A. Black" <dblack@...> 2004/03/19

Hi --

[#95403] Re: Can $LOAD_PATH be relative? — Patrick Bennett <patrick.bennett@...> 2004/03/19

[#95434] converting javascript to ruby (nested methods) — yvon.thoravalNO-SPAM@... (Yvon Thoraval)

i have a script written in javascript and want to translate it into ruby

10 messages 2004/03/20

[#95517] What to gem? — Robert Feldt <feldt@...>

Hi,

14 messages 2004/03/21

[#95560] Need some advice on PickAxe II — Dave Thomas <dave@...>

Folks:

74 messages 2004/03/22

[#95636] Tempfile consuming a lot of memory — thomass@... (Thomas)

I'm using a lot of Tempfile's and I have been made aware that they

17 messages 2004/03/23

[#95693] proposal - enforce lower_case for variables and methods — Simon Strandgaard <neoneye@...>

Ruby does already enforce CamelCase for class/modules.

29 messages 2004/03/24

[#95769] File.stat.size errors with file sizes over 2Gigs. — walter@...

File.stat('file_name').size returns erroneous file sizes when the

16 messages 2004/03/24

[#95782] Quick Introduction to RubyGems — Gavin Sinclair <gsinclair@...>

Hi folks,

17 messages 2004/03/24

[#95875] Errors with "make" step, while compiling ruby under AIX 5.2 — Ruby Ruby <ruby4lover@...>

I am wanted to install ruby 1.8.1 under AIX 5.2. During the installation, while doing the "make" part of it, the process abruptily ended with the following errors:

15 messages 2004/03/25
[#95883] Re: Errors with "make" step, while compiling ruby under AIX 5.2 — nobu.nokada@... 2004/03/26

Hi,

[#95918] Re: Errors with "make" step, while compiling ruby under AIX 5.2 — Ruby Ruby <ruby4lover@...> 2004/03/26

I am sorry to insist but this is important to me.

[#95960] Status of AOP in Ruby — Markus Jais <markusjais@...>

Hello

22 messages 2004/03/27

[#95984] deciding between ruby and python — "Serve Lau" <ik@...>

I'm trying to decide to learn either python or ruby. Are there fundamental

119 messages 2004/03/28
[#96006] Re: deciding between ruby and python — klausm0762@... (Klaus Momberger) 2004/03/28

"Serve Lau" <ik@detongiser.com> wrote in message news:<106dlen5mr97q76@corp.supernews.com>...

[#96503] Re: deciding between ruby and python — Ville Vainio <ville@...> 2004/04/04

>>>>> "James" == James Britt <jamesUNDERBARb@neurogami.com> writes:

[#96508] Re: deciding between ruby and python — Dan Doel <djd15@...> 2004/04/04

As you say, this whole thread has been done many times before.

[#96566] Re: deciding between ruby and python — Ville Vainio <ville@...> 2004/04/05

[#96691] Re: deciding between ruby and python — gabriele renzi <surrender_it@...1.vip.ukl.yahoo.com> 2004/04/07

il Wed, 07 Apr 2004 05:35:39 GMT, dagbrown@LART.ca (Dave Brown) ha

[#95992] Madeleine 0.6 — Anders Bengtsson <ndrsbngtssn@...>

23 messages 2004/03/28

Re: perl6 grammar rules in ruby

From: Robert Feldt <feldt@...>
Date: 2004-03-04 21:47:59 UTC
List: ruby-talk #94264
Charles Comstock wrote:

> The advantage of the embedded system is you can call out to a grammar 
> inline from a builtin regex, something you can't really do in ruby at 
> the moment.  Basically with the perl6 grammars you would be able to say
> text =~ /__START__<ruby>__END__/ where ruby would be the grammar for 
> ruby with associated callbacks for each grammar node to say create an 
> AST.  The fact it can be embedded in a regex gives the nice touch that
> a) you can switch quickly back and forth between the grammar and lexer 
> level
> b) it just makes it alot easier to use a grammar from within the 
> language.
>
> It might help the discussion if a few more people take a look at how 
> the grammars are designed to work in perl6.  If the functionality they 
> are trying is possible without extending the language then go for it, 
> but I am inclined to believe it is not possible without a seperate 
> regex engine at the moment.  In addition the ability to inherit 
> grammars would probably be easier if it was embedded in the language, 
> but it is certainly possible to work around that constraint.
>
> The pertinent perl6 grammar references:
> http://dev.perl.org/perl6/exegesis/E05.html
> http://dev.perl.org/perl6/apocalypse/A05.html
>
I've taken a look and I agree it looks powerful. The embedding in the 
language is crucial to what they are trying to do: making 
grammars/parsing a first-class entity in the language that plays nicely 
with the other parts. The things that is a bit hard to understand is how 
powerful a parser this can be used to express. All context-free 
grammars? An even larger class? I guess the latter might be the case 
since they can have code intermingled.

The downside is the complexity of it, both in understanding and 
implementing. Do they plan to support this in Parrot so that other 
languages on top of Parrot can reuse the same implemenation? Seems like 
this is quite a bit away into the future. Thanks for bringing it up.

/Robert



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