Squeak-dev June 1999

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139 participants
408 discussions

Modules for Squeak, was: (Re: [Newbie Q] COM, beans, and Squeak)
by Les Tyrrell 26 Jun '99

26 Jun '99

There are a number of interested parties- my own approach, evolving as we speak, is partially described at: http://www.canis.uiuc.edu/~tyrrell/Squeak/Personal/Oasis/index.html The description is actually very sparse, I really need to update this. Oasis, like most of what I do, is written for VisualWorks. However, it is not UI-dependent so I don't anticipate much difficulty in porting it to Squeak. I'm close to finishing up one of the analysis tools in Oasis, so perhaps I can get something decent written about it in the near future- the current description of Oasis is very inadequate. Basically, given some arbitrarily huge chunk of code, Oasis tears it apart and builds a number of useful analytical models that I can then browse ( but without a UI at this time ). > One of the coolest things about COM and Java Beans are the > ability to plug modules into an application or an enviroment. > > What is the Squeak approach for this? > > Is anybody working on a "Squeak Droplets" or some such > component architecture?

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Re: Screenshots
by Bob Arning 26 Jun '99

26 Jun '99

On Fri, 25 Jun 1999 16:22:05 -0700 "Mike O'Brien" <obrien(a)rush.aero.org> wrote: >> Look at SyntaxHighlightingTextAttribute class>>makeAllAttributes, you can >> fully customize your color scheme. > > There's no such class and no such method in the 2.4c base >image. It's probably in http://home.munich.netsurf.de/Helge.Horch/SqueakSharesSoar.html which is an add-on highlighter. Or you can modify what you have. Look at: - implementors of #defaultBackgroundColor to change particular window colors - implementors of #printOn:indent: and #printOn:indent:precedence: to change syntax colors. Cheers, Bob

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Re: RE: Screenshots
by Bob Arning 26 Jun '99

26 Jun '99

On Thu, 24 Jun 1999 20:27:04 -0400 (EDT) Doug Way <dway(a)mat.net> wrote: >> >I was interested in the following things that I saw: >> > >> >1. Syntax highlighting >> >> Curiously enough, that is available in squeak. Use the shifted yellow >> button menu in a browser text pane, choose pretty print and keep the >> left shift down til the code changes. I don't know if that's exactly >> what was used in the picture, but it's certainly similar. > >I think he might be referring to the syntax coloring. I think so, too. That's why I mentioned keeping the left shift key down. Cheers, Bob

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RE: Ramblings on how to optimize Squeak for modern CPU bit manipulation (Was Re: I was wondering ...
by Lawson English 25 Jun '99

25 Jun '99

Adam Hill <ahill(a)users.arco.com> said: >There is a large list of libraries from Intel that are free for the asking. >We don't get source just binary redistribution. > >I realize this is not incredibly useful since it is X86 specific but it is >an impressive list of libraries for some ideas(or API's): [snipt library references] I think that those might be worth looking at, but they are definitely higher-level than what I was thinking of. I just want to emulate the AltiVec API, which is sorta like MMX with 32 128-bit registers that can also handle floating point operations. I was thinking a little more about the AltiVec API issue, and I realized that there are two needs here: 1) a set of quick and dirty primitives that can be called as standalones; 2) a full-blown (more or less) AltiVec simulator that uses a single set of 32 "registers" that are accessed by index, rather than by providing a Smalltalk byteArray every time you use it. That way, you only need to work with a simple index. Integer conversion only need to happen during/before "load" and "store" operations. You also could cascade AltiVec primitive calls to perform complex DPS/image manipulations without having to go through any Squeak data interface. One could provide pointers to registers and "register files" to allow efficient virtual register swapping/loading. One could manipulate scan-lines 16-bytes at a time, controlled by Smalltalk. Add in a JIT Squeak compiler, and I suspect that a virtual AltiVec algorithm could approach the speed of a reasonably efficient C-based algorithm designed to do the same thing. On AltiVec machines, the loop would go that much faster. ---------------------------------------------------------------------- Use your imagination. ----------------------------------------------------------------------

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Re: Ramblings on how to optimize Squeak for modern CPU bit manipulation (Was Re: I was wondering ...
by Lawson English 25 Jun '99

25 Jun '99

I said: >A set of Smalltalk primitives that models an ISA that was designed to >handle advanced graphics and DSP operations, regardless of whether these >are implemented using single instructions, or a larger C-based simulation, >would be VERY worthwhile, don't you agree? > I've been looking more closely at the AltiVec instructions. Here are a few of the potentially useful instructions that I'm thinking of simulating: vperm: vector permute -takes 3 128-bit registers and merges the byte- contents of registers b and c based on the control bits in register a. vor: vector logical OR -logical ORs 2 128-bit registers vnor: vector logical NOR -logical NORs 2 128 bit registers etc vsl: vector shift left -128-bit shift left etc vrlb: vector rotate left integer byte -rotates each byte in a 128-bit register by the amount specified in the corresponding low 3-bits of each byte in another register vrlh: vector rotate left half-word -as above with 16-bits vrlw: vector rotate left word -32 bits etc There are various vector mul-add instructions for bytes, half-words, words and 32-bit floats. Various pixel pack and unpack instructions, etc. 162 instructions in all. I don't know what the savings would be to perform these operations via C primitives instead of directly in Smalltalk, but I betcha that they CAN save significant time and space. Testing new color transforms (like the GX colors that I want to do) would be a lot easier and faster if efficient multi-pixel bit-manipulation primitives were available, no? I'm sure that other people could come up with other uses for the ability to perform vector arithmetic, bit-manipulation and logic operations via C-based primitives (and G4 Mac and AIX users would get single-cycle implementations of these in the CPU, of course). ---------------------------------------------------------------------- Use your imagination. ----------------------------------------------------------------------

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Re: Wisker was: Re: RE: Screenshots
by Jerome.Garcia＠wj.com 25 Jun '99

25 Jun '99

Doug, I just wanted to second that "awesome". Look quite powerful. Jerome ______________________________ Reply Separator _________________________________ Subject: Wisker was: Re: RE: Screenshots Author: David Farber <dfarber(a)numenor.com> at INTERNET Date: 6/25/99 2:40 AM Doug, this looks *SO* incredibly awesome. please carry on!!! david >Yeah, it's not really ready for prime time yet, though. You can try it if >your curious. > >Anyway, Whisker is the name of a new Smalltalk browser I'm working on. >For more info on what it should eventually be able to do, see: > >http://www.mindspring.com/~dway/smalltalk/whisker.html > >- Doug Way > dway(a)mat.net > > > -- j. david farber oo architect+mentor numenor labs incorporated in sunny boulder colorado dfarber(a)numenor.com www.numenor.com

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Wisker was: Re: RE: Screenshots
by David Farber 25 Jun '99

25 Jun '99

Doug, this looks *SO* incredibly awesome. please carry on!!! david >Yeah, it's not really ready for prime time yet, though. You can try it if >your curious. > >Anyway, Whisker is the name of a new Smalltalk browser I'm working on. >For more info on what it should eventually be able to do, see: > >http://www.mindspring.com/~dway/smalltalk/whisker.html > >- Doug Way > dway(a)mat.net > > > -- j. david farber oo architect+mentor numenor labs incorporated in sunny boulder colorado dfarber(a)numenor.com www.numenor.com

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RE: [BUG] [FIX] Browser loses method text if new first method has spelling fault
by Norton, Chris 25 Jun '99

25 Jun '99

Hi Folks. I'm terribly sorry I didn't post this fix sooner! Last month Carl Gundel & I submitted a (hopefully) comprehensive fix for various bugs relating to the changes we made to the Browser. Unfortunately, I neglected to post it to this list too. The attached change set fixes many Browser bugs. Carl & I owe a debt of gratitude to Oshima Yoshiki for finding some of the bugs and attempting a fix back in early April. Scott Wallace also helped to test & review our fixes. Well, better late then never! I hope I haven't caused you folks too much grief! ---==> Chris PS> The preamble on the change set gives a full description of the bugs that were fixed and the tests that were performed on our fixes. <<AllCatFix.21May657pm.cs>> > -----Original Message----- > From: Tim Rowledge [SMTP:rowledge@interval.com] > Sent: Thursday, June 24, 1999 10:27 PM > To: Squeak mailinglist > Subject: [BUG] [FIX] Browser loses method text if new first method > has spelling fault > > IF you attempt to save a method that has an unknown symbol (my usual > spelling mistake!) AND you have the -all- message category selected then > the method text is whipped out from under you. > > It appears to be a problem in Browser>messageCategoryListIndex:, or at > least the usage of it within Browser>contents:notifying:. There is an > attempt to correct for the 'wrong' category being selected and the code > ends up clearing the code view. There is also a trivial bug in > Browser>selectUnclassifiedCategory, where 0 is hardcoded as the index of > the 'no messages' category; it seems more reasonable for it to be 1, since > it follows 'all' which is an imaginary entry. > > As for a fix, I imagine changing the contents:notifying: code to send some > other message that changes the category that is used to compile under but > does not affect the browser display should work. Since both of the methods > (#selectOriginalCategoryForCurrentMethod & #selectUnclassifiedCategory) > are > only used in contents:notifying: this ought to be reasonably safe. > > It seems to be ok if we change #selectMessageCategoryNamed: to avoid the > display updating and change #selectUnclassifiedCategory to use it with the > name of the category rather than the index. > > Possible fix changeset enclosed. > > tim > > -- > Useful random insult:- Overdue for reincarnation. > Tim Rowledge: rowledge(a)interval.com (w) +1 (650) 842-6110 (w) > tim(a)sumeru.stanford.edu (h) <http://sumeru.stanford.edu/tim> << File: > BrowserBug/24Jun725pm.cs >> Content-Type: application/octet-stream; name="AllCatFix.21May657pm.cs" Content-Disposition: attachment; filename="AllCatFix.21May657pm.cs" Attachment converted: Anon:AllCatFix.21May657pm.cs (????/----) (0000AD0E)

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Re: Screenshots nice, but...
by Bert Freudenberg 25 Jun '99

25 Jun '99

On Thu, 24 Jun 1999, Mark Guzdial wrote: > Minnow is back up, and I took the opportunity to make the Squeak Swiki and > uploadSwiki. Have fun! I had fun - with my proxy 8-} Minnow seems to not have included the fix to stop proxies from caching at least the edit page?! Anyway, the download of the screenshots page should be much faster now for all ye poor guys without a T1 connection :^) Thumbnails are 128x96, 64 colors. Btw: what's the official way to reference attachments? /bert

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Re: ObjectExplorer
by merlyn＠stonehenge.com 25 Jun '99

25 Jun '99

>>>>> "Ian" == Ian Trudel <ian(a)monk.cgocable.ca> writes: Ian> Yeah, I guess they just not forseen mailing lists when designed email Ian> stuffs. It would be interesting to see our Celeste have something like Ian> newsreader.. Reply to group and reply to author. It shouldn't be hard. Ian> Either filter for squeak(a)cs.uiuc.edu and having a definition for it that Ian> says it's a mailing list, or simply check 'From:' and 'Reply-to' fields are Ian> not the same? No, a proper mailing list doesn't set reply-to, because it overrides the requests of the incoming mail (which may have had its own Reply-to). All modern mailreaders that I've seen have a choice of "reply to sender" (personal) vs "reply to sender and to/cc" (public). A mailing list should not add "reply-to" to force both of those to be the same, because all too often, we get what just happened (twice). *That's* what I mean by evil. GNUS has a setting to "ignore evil reply-to", but then for the half dozen people on this list that set a personal reply-to, I don't see them. No mailing list should set reply-to. It breaks things. It's against the nature of the header. -- Name: Randal L. Schwartz / Stonehenge Consulting Services (503)777-0095 Keywords: Perl training, UNIX[tm] consulting, video production, skiing, flying Email: <merlyn(a)stonehenge.com> Snail: (Call) PGP-Key: (finger merlyn(a)teleport.com) Web: <A HREF="http://www.stonehenge.com/merlyn/">My Home Page!</A> Quote: "I'm telling you, if I could have five lines in my .sig, I would!" -- me

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