World: r3wp
[Parse] Discussion of PARSE dialect
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BrianH 8-Nov-2008 [2940x2] | Oh, that was your suggestion? I thought it was Henrik. It's on the list, and thanks for the link :) |
Right now the Parse Proposals doc is for dialect enhancements. I am keeping a list of improvements out of that scope that will get worked on as well. Don't worry... | |
Sunanda 8-Nov-2008 [2942] | Thanks -- I'm sure I'm not the first to have had the idea. |
BrianH 8-Nov-2008 [2943x4] | You aren't, but it's still a good idea :) |
I'm glad that we are finally planning on PARSE improvements. PARSE has been the primary REBOL feature I've used for 8 years now. | |
That was a lot of writing - I must have gotten angry after all. | |
I forget sometimes that the REBOL community has been around long enough that many of the people from the early days aren't here anymore. I guess a lot of people don't remember me from the latter part of the REBOL 1 days and think I am a newbie. Sorry :( | |
Graham 8-Nov-2008 [2947] | Yep, I'm using code that you've written Brian :) Probably from years ago ! |
BrianH 8-Nov-2008 [2948x4] | I am sorry if it seemed like I was taking credit for various PARSE proposals. It is not anyone's fault that I have been using PARSE long enough that 7 or more years ago I came up with almost every one of those proposals, or their original inspirations. That's where the conversations that led to the REPs came from. There weren't as many REBOL users back before the Official Guide and REBOL for Dummies :) If other people who have had the same ideas since would like to add their names to the appropriate proposals I would be more than happy to help - consider them to be votes. I would be happier still if someone came up with a better way to do THROW or DO, because I am at a loss to figure out a way that isn't dumb :( |
I am embarrassed that the best, most obvious proposal is one that I completely spaced on. Congrats on REVERSE, Carl :) | |
It never occured to me or anyone else who was talking about enhancing PARSE in days of yore, not even Ladislav :( | |
Thanks, Graham :) | |
Graham 8-Nov-2008 [2952] | Pekr, Gabriele, Tomc, yourself and I are probably the longest Rebolers here these days |
BrianH 8-Nov-2008 [2953] | btw Sunanda, I can't remember who was the first to think of having trace support for PARSE, but it wasn't me :) |
Graham 8-Nov-2008 [2954] | Is attribution really important? |
BrianH 8-Nov-2008 [2955] | Steeve has indicated that it is. |
Graham 8-Nov-2008 [2956] | Is the driving force for fixing parse so that it can better parse data, or, to build better dialects, or both? |
BrianH 8-Nov-2008 [2957x3] | Strangely enough I wasn't talking about code I had posted that you might have used. In the early days before REBOL.org, I tended to post code to the mailing list. The code that you would have used would have been in REBOL itself - I used to give very detailed messages to feedback about mezzanine bugs, usually with rewrites. Many of those rewrites made it into REBOL, especially in the 2.5 version. Some natives too (to-local-file and to-rebol-file were based on REBOL code I wrote and posted). |
Right now the driving force is building better dialects - Carl needs it for the new GUI dialects. The data parsing improvements have just accumulated over the years and now seems like as good a time as any, especially because of the R3 compatibility break. | |
Some are needed because of Unicode. You can't effectively complement a charset anymore so NOT is needed. | |
Graham 8-Nov-2008 [2960x2] | ahh... so we can blame you for to-rebol-file problems?? :) |
http://members.core.com/~bhawley/rebol/to-rebol-file.r | |
BrianH 8-Nov-2008 [2962x2] | I can't shut down that website - my account was canceled more than 6 years ago and I can't access it. If you look elsewhere on the site you will find the only site on the internet with the Oberon Compiler for DOS - the developer disappeared without a trace. |
I've wanted to change the licensing on that script to BSD for years. It can do more than the native version - they simplified it. | |
Graham 8-Nov-2008 [2964] | Your CV is a bit out of date! |
BrianH 8-Nov-2008 [2965x3] | Can't edit the site :( |
Wow, that code is so primitive. | |
Except require.r - that is advanced even today. | |
Anton 8-Nov-2008 [2968] | I should just say that I really appreciate the enormous amount of energy that BrianH has put into this project (and generally). I can see there's a lot of work to manage all the proposals. |
Steeve 8-Nov-2008 [2969] | 2, 3 tips I know that Brian is great contributor but I think sometimes it tends to reject a bit too easily ideas of others. Why I am saying this, is that I am not always convinced by his arguments but he acts as if the issue was resolved in advance. (I may have a problem with that) About who is credited with what, I think that this is not important too, however it was a bit of supris seeing the name of Brian on most of the ideas, then as I said previously, this makes many years that these Improvements have been suggested by different people. Obviously this is not an important step, but Brian, you puting your name everywhere pretexting you collect ideas is a little ... how to say that ? pretentious. Personally, I am a large user of parsing. I think this is the most important function in Rebol. You can do practically everything with it. Design dialects, interfaces, and many others things. Parse can build programs by clearly showing the data structures your are dealing with. Thus our scripts win in readability. During all these years, I was very frustrated seeing some limitations. I thought, oh my God, if only we could do this simply, REBOL would be so powerful. My view is that parse should be extended (as far as possible) to gain in expressiveness. One thing I don't like with parse, is the cumbersome process to pass parameters to functions. I give an example. usually we do: [copy parm my-rule (my-func parm)] If parse knew recognize when to call a function we could write: [Myfunc my-rule] This would be much more compact and expressive. More, we could use return value of myfunc to guess if the parsing should continue or not. This development would discard most of proposals that were made because we could add many new commands very easily. (IF NOT ALL RETURN etc ...) |
Graham 8-Nov-2008 [2970x3] | Steeve, that looks like a major change ... whereas I think Carl is just asking for enhancements. Maybe Rebol4 ?? |
ps: I don't mind being confused with BrianH :) | |
maybe that way I'll gain access to some of the private channels ! lol | |
Steeve 8-Nov-2008 [2973] | u could, you are a celebrity (for me, after what i said to Brian, there's no chance) ;-) |
Graham 8-Nov-2008 [2974x2] | All this parse stuff is over my head .. I try to avoid headaches. Let the experts work it out I say. |
I just want to be able to better parse XML namespaces and all. | |
Steeve 8-Nov-2008 [2976x2] | i agree, better is my second name, lol |
and my english is to poor to dealing with experts | |
Graham 8-Nov-2008 [2978x2] | you could write in french ... |
Off topic ... but one of my first chat programs used SOAP to do automatic translations | |
Steeve 8-Nov-2008 [2980x2] | i think i do a little better than automatic translators. |
no ? ;-) | |
Graham 8-Nov-2008 [2982] | But it means that native french speakers could read it as you intended ... |
Steeve 8-Nov-2008 [2983x4] | but the |
French Reboler are not very interesting with my strayings | |
The French forum lost many contributors during last years | |
currently most of them are beginners | |
Graham 8-Nov-2008 [2987] | that's a world wide phenomenon |
Steeve 8-Nov-2008 [2988] | DockKimbel never participate, Didec is scarce, there is only Shadwolf. |
BrianH 8-Nov-2008 [2989] | Steeve, your latest suggestion is very similar to the RULE! type REP (11). Unfortunately, Graham is right that this would basically require rewriting PARSE from scratch as a function type. This is something I have wanted to do for years, and will get the chance to do so once R3's user-defined datatypes are available. I like the way you think :) |
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