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World: r3wp

[Dialects] Questions about how to create dialects

Brock
13-Jun-2008
[277x3]
The first line of the volleyball page http://www.wnmu.edu/athletic/stats/07vb/29wnmu.htm#GAME.PLY
, the line starting 1-0,  _might_  be represented by the following 
keystrokes...
s43a23b50
So, 

s = set attempt, 4 = player Cola Svec, 3 = set attempt level 3 - 
perfect set

a = attack attempt, 2 = player Jeri Walkowiak, 3 = attack attempt 
level 3 - kill

b = block attempt, 5 = player Jessica Lindgren, 0 = block attempt 
level 0 - error
I might need to add a team designator like H = Home, V = visitor 
as it could be complicated to catch live play and may need to establish 
which team inorder to correctly identify a player.  I may also need 
to use a separator between each keystroke if I want to identify the 
player by jersey number.
I will need to start playing with this to see if I can come up with 
something and then maybe get some feedback on my attempts.  I don't 
know when I would get to this but thought I'd through it out there.
BrianH
13-Jun-2008
[280]
If this is typing in real time, space would be the best seperator,
eFishAnt
23-Jun-2008
[281x4]
anyone know how to parse this:
{<table><table></table><tr></tr></table>}
It is a table with an empty table inside, and also a Table-Cell
for some reason, using recursion...I just can't seem to put my finger 
on the right combo.
Chris
23-Jun-2008
[285]
What's the goal?
eFishAnt
23-Jun-2008
[286x5]
parse rules that will give a true if parse/all {<table><table></table><tr></tr></table>} 
RULES
(using recursion)
like  Tables: [Table Tables | Table]
Table: ["<table>" Content "</table>"]
...and so forth.
Chris
23-Jun-2008
[291]
rule: use [table row][
	row: [<tr> </tr>]
	table: [<table> any [table | row] </table>]
	[table]
]
eFishAnt
23-Jun-2008
[292]
As Robert de Niro said in one of my favorite movies of all time, 
"Analyze This"  "...hey, you...you're good!"
Chris
4-Aug-2008
[293x3]
rfc: I have a (not so) little function that attempts to match a block 
of values to a given specification.  Example:

	>> probe match [%image.png :red 300x100 /old][
	[	file: file! | url!
	[	size: opt pair!
	[	attributes: any get-word! | refinement!
	[	]
	make object! [
		file: %image.png
		size: 300x100
		attributes: [:red /old]
	]


There's not much to the rules, they are -- one (default), opt (zero 
or one), any (zero or many), some (many).  If they don't match, they 
return an error.  Any suggestions?  Optimizations?

	http://www.ross-gill.com/r/match.r
Ways of making it smaller???
One of the desired effects is precedence, for example:

	match [http://rebol.com%image.png][
		link: file! | url!
		image: file! | url!
	]

Returns:

	[link: http://rebol.comimage: %image.png]
Gabriele
4-Aug-2008
[296]
I do something like that, but text based, in QML. not sure if it 
can be of any help.
Alan
14-Sep-2008
[297]
.
Robert
25-Feb-2009
[298x4]
What's the best approach to support normal Rebol things like FOREACH, 
IF, ANY, ALL and set-words, get-words within a dialect? I don't want 
to write Rebol parse rules for this.
Example: parse XYZ mydialect

XYZ: [
	repeat x 1 14 [
		a: get-point x 7
		set-point 7 x (a * 2)
	]
]
]
get-point and set-point are the dialect things. The rest should be 
normal rebol.
Is there a best practice how to get Rebol control structure support 
into dialects?
Janko
25-Feb-2009
[302]
but isn't this just a regular rebol code block then .. a: get-point 
x 7 and set-point looks like a normal rebol func too?
Robert
25-Feb-2009
[303]
Just assume that get-point and set-point is done via a dialect.
Janko
25-Feb-2009
[304]
aha, I would also like to know if that is possible .. I still haven't 
figured out how they do ( some code ) in parse
Gregg
25-Feb-2009
[305x2]
Use Gab's compile-rules module.
Gab = Gabriele
BrianH
25-Feb-2009
[307x3]
Robert, if you don't want to use parse rules you might try DO/next. 
Don't use DO/next (or Gabriele's compile-rules) if your dialect data 
can come from an untrusted source - use parse rules and dialect operations 
that call the REBOL functions if necessary.
But *only* the REBOL functions that you want to support and can do 
so safely.
You can't make that restriction with DO/next or Gabriele's compile-rules 
without a sandbox - hard to do in R2.
Oldes
25-Feb-2009
[310x2]
Check out the source of the R2's layout function.
?? layout
Brian: I think, that Rbert wants to use parse rules. The question 
is, what is the best way how to setup such a rules.
Robert
26-Feb-2009
[312x2]
compile-rules: Ok, will take a look at it.
The other option would be not to use a dialect at all and create 
normal functions for everything. But I like dialects :-)
Gabriele
26-Feb-2009
[314x2]
Robert, in compile-rules, INTERPRET is what you want to look at.
Brian: so, see, even normal people want DO in PARSE, and not only 
that, they want all the control structures... look at compile-rules 
how much effort that is. :-)
Robert
26-Feb-2009
[316]
Gab, where can I find the script?
Oldes
26-Feb-2009
[317]
I found it here http://www.colellachiara.com/soft/PDFM2/compile-rules.r
but I don't know if it's uptodate.
Robert
26-Feb-2009
[318x2]
Ok, found version 1.40 on my system.
History states a version 1.50...
BrianH
26-Feb-2009
[320]
Just because normal people want DO in PARSE doesn't make it a good 
idea. Little girls want a pony, but it's not a good idea if they 
live in an apartment. DO in PARSE would be a feature that couldn't 
be used most of the time because of its security problems.
kib2
26-Feb-2009
[321]
:)
BrianH
26-Feb-2009
[322]
A better analogy might be little boys asking for a machine gun though 
:(
kib2
26-Feb-2009
[323]
Please no : keep the pony !
Robert
26-Feb-2009
[324]
That's why I ony want some control structures routed into the dialect 
context.
Gabriele
27-Feb-2009
[325x2]
Brian, right, so I have to workaround all the time, write slow code 
with deep parse recursions, and all those funny and nice things. 
Or, give up and pretend REBOL was PHP.
We already had a long discussion about the "security problems" and 
I still strongly disagree that there's any more security problems 
than having DO in REBOL has.