Squeak-dev December 2002

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173 participants
456 discussions

[ANN] v3 of StarBrowser registered on SqueakMap: try it!
by Ned Konz 01 Dec '02

01 Dec '02

The Squeak port of the StarBrowser has been considerably improved, and is now ready for day-to-day use (that is: I'm using it myself). It is registered on SqueakMap, and can also be found using the SqueakMap web interface at: http://map2.squeakfoundation.org/sm/package/9187f67b-a437-4e52-93f9-eecb9b4… It now also includes a basic SqueakMap browser/loader and a DVS UI. Try the window frame menu and the context menus on individual items, the toolbar buttons, and drag/drop to/from other browsers and within or between StarBrowsers. It's not complete yet; I've noted some of the missing parts are in the install/changes.txt entry in the SAR. Most notably, don't bother trying to use the history arrows (<- and -> buttons), as they may confuse the browser. However, the left-most button (hide/show tree) works fine. This is the third version of the port of the StarBrowser from VisualWorks to Squeak. Most of the functionality works (the classifications model and an inspector and class editor, and lots of other features.) Drag and drop work (with thanks to Ned for the help). Ned re-factored the menu handling and button handling into more service classes, and added DVS, Morphic, and SqueakMap support as examples of extension. The goal of the Star Browser is to allow you to browse your Smalltalk environment and classify anything you encounter while doing so. Therefore it has full drag&drop support to allow you to classify software elements such as classes and methods while you are browsing. It is easily extended to handle browsing most anything in the Squeak environment. I'm interested in hearing any bug reports, and will gladly consider extensions. Enjoy! -- Ned Konz http://bike-nomad.com GPG key ID: BEEA7EFE

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SUnit swiki broken links
by Ross Boylan 01 Dec '02

01 Dec '02

http://minnow.cc.gatech.edu/squeak/1547 on SUnit has its first 2 links broken. I'm looking for a basic description of SUnit and how to use it, if anyone has any suggestions. I'm wandering around the other links now....

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[ANN] MobVM - Croquet Release
by PhiHo Hoang 01 Dec '02

01 Dec '02

Hi, Please find attched the release of MobVM that will work with Croquet. (If you have a very good Nvidia video card, lot of CPU cycles and RAM ;-) Please read 'MobVMCroquetRelease.txt' . Mainly, this release fix a bug in supporting OpenGL and OSProcess. Enjoy. PhiHo.

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Newbie questions: Changesets, changes and the image
by Derek Brans 01 Dec '02

01 Dec '02

Could someone tell me the proper way to produce a changeset (ie, suppose I'd been working on the image and I want to take some of the changes I made and bundle them into a changeset). Here is a bunch of random changeset questions. What is a change sorter? What is a change? can a mouse movement be a change? What about a do-it? When an object is created, is that a change? Can the entire state of an image be defined in a changeset? Which parts cannot be? What are the different parts of an image state (eg, source code, live objects, Contexts, System Dictionaries, classes, proto-stuff)? How does each part behave (is source code made up of live objects?)? Is there such a thing as data that is not executable? Or is everything a method call? Newbie minds want to know. Thank you so much, Derek Nerd on a Wire: Web and Information Solutions Website Design - Database Systems - Site Hosting 604.874.6463 mailto:info@nerdonawire.com For more information, visit http://nerdonawire.com

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Re: Newbie questions: Changesets, changes and the image
by Ross Boylan 01 Dec '02

01 Dec '02

I've been asking enough questions that perhaps I should answer one! My answers are not authoritative. The webmail I'm using appears to be doing a poor job of quoting. Sorry about that; my answers are interspersed with the relevant questions. -------Original Message------- From: Derek Brans <brans(a)nerdonawire.com> Sent: 11/30/02 05:53 PM To: squeak-dev(a)lists.squeakfoundation.org Subject: Newbie questions: Changesets, changes and the image > Could someone tell me the proper way to produce a changeset (ie, suppose I'd been working on the image and I want to take some of the changes I made and bundle them into a changeset). If you are working on a project then all your work will go into the project's changeset. In general, all your work is going into some changeset. So you may just be able to file it out. If you select changes | simple change sorter you should be looking at your current change set. Right click to file the thing out. If that's not exactly what you want, try the dual change sorter. Use it to create a change set, and then populate it with stuff from the other change sets. Here is a bunch of random changeset questions. What is a change sorter? A tool for looking at a change set. It looks to me as if the change sorter suppresses some of the info in the change sets, such as doIts, showing only code changes. What is a change? A small, atomic operation: (re)definition of method, deletion of method, recategorization of something, class def or removal, or a do it (when you highlight some code and select do it). It is recorded via some text. can a mouse movement be a change? No. What about a do-it? Yes, some changes are do-its. Change sets record (at least) two different kinds of doits. Some are code definiton, conceptually very similar to method definitions. The definition of a class is recorded in a doit. doit is just an executable code fragment. The second kind is a doit that you do interactively. See changes | recently logged changes for more of a log of all your do-it's. This is actually a way to slice off the top of your image's .changes file. When an object is created, is that a change? Not directly, though the action that created it is recorded as a change (again, class definition or execution of code fragment). Can the entire state of an image be defined in a changeset? No. An image is a complete set of objects and their states. Changesets basically focus on code. Positions of windows, any kind of data you have entered, text and notes in the workspace or elsewhere are unlikely to be in the change set. Your current execution context isn't there either. Which parts cannot be? What are the different parts of an image state (eg, source code, live objects, Contexts, System Dictionaries, classes, proto-stuff)? How does each part behave (is source code made up of live objects?)? That's a little wide open for me. Your list is not a bad one (don't forget Processes and the Scheduler). If you look under the hood, there are lots of objects involved in source code. The text you type in is a text or string type object. As it is evaluated it leads to the creation of other objects, such as classes and method objects, which include the compiled byte-codes for the methods and, in some systems (not sure if squeak currently has it) the actual machine code. Unless you are curious, there is no reason to attend to this machinery. Is there such a thing as data that is not executable? Sure. Numbers and text are simple examples, although some text might be possible to evaluate and execute. Or is everything a method call? No. However, everything that happens in the image happens because of method calls and it would, in principle, be possible to create an entire image from a script of such calls. The actual smalltalk changes mechanism does not attempt such a complete record of activity, however. Newbie minds want to know. Thank you so much, Derek

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[FIX][VM][MAC] Directory deletion fix for Mac
by Ned Konz 01 Dec '02

01 Dec '02

Though I'm not set up to compile a Mac VM yet, I believe the attached patch should work to invalidate the directory cache upon directory deletion, thereby fixing a bug that is caught by FileDirectoryTests when FileDirectory>>exists is defined correctly (that is, as I previously posted on the list). It should be tested first, of course. -- Ned Konz http://bike-nomad.com GPG key ID: BEEA7EFE

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