Squeak-dev August 2006

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Squeak and Xgl
by Pavel Krivanek 03 Aug '06

03 Aug '06

Small notice: if you will try Squeak on Xgl, you have to set 32-bit display depth in your image. -- Pavel

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[ANN] ST2JS - Smalltalk to Javascript translator
by Diego Gomez Deck 03 Aug '06

03 Aug '06

Hi folks, To take full benefit of current internet browsers, tons of lines of Javascript have to be written. We (the Smalltalkers) don't like to edit files to program, we want to code in the refactoring browser! This project is an attempt to generated Javascript from plain-normal Smalltalk code. You can find an entry for the project at SqueakMap and SqueakSource... Most of the times the newer version resides on Squeaksource. http://map.squeak.org/account/package/11637941-682d-4ce3-bd4c-ba67afef47b5/… The current version allows to host a TestRunner on browsers, full written in Smalltalk code (and translated to JS). It also includes a set of "base" classes to simulated an small Smalltalk environment. Inspectors are also available. You can see how the TestRunner looks at: http://photos1.blogger.com/blogger/8166/525/1600/St2jS%20-%20Test%20Runner.… Also, just in case you don't want to install the package, you can see an HTML (full generated from Squeak) including the generated JS code at: http://minnow.cc.gatech.edu/squeak/uploads/5851/St2jS%20-%20Test%20Runner.h… More information (in Spanish) is available from: http://diegogomezdeck.blogspot.com/2006/07/st2js-traductor-de-smalltalk.html http://diegogomezdeck.blogspot.com/2006/07/st2js-traductor-de-smalltalk_28.… Most of the Smalltalk semantic is respected in the translator, the current absences are: - Support for class variables. - Support for instance-class variables. - Support for "super" in class-methods. (super works fine in instance methods) All these points can be solved, and they will as soon as I need them. BTW any collaboration is accepted ;-) The generated code runs fine in Firefox 1.5, IE and Konqueror (May be it also works on Safari). It doesn't work on Opera. My next goal is to create a set of widgets, for the browsers, using ST2JS for the JS production and my previos Comet project to mount an Observer-pattern distributed between Squeak and the internet browsers. I think there are a good set of interesting things to try, like: - Port the Spoon minimal set of objects to JS. (I mean, translate ST to JS). The performance will be awful, but every internet-browser can be converted in a Smalltalk environment! Enjoy it! -- Diego.st

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How to run a Squaklet on Solaris/Firefox
by Rudolf Coetsee 03 Aug '06

03 Aug '06

Hi Can anyone provide some guidelines on how to run a Squeaklet on Solaris/Firefox. We have installed the solaris squeak browser plugin ( Squeak-3.7b-5.sparc-sun-solaris2.8.tar) but launching the Squeaklet is not yet successful. We would appreciate any documentation on the Squeak solaris plugin and hopefully an example HTML snippet showing what parameters the component requires to launch properly (i.e. in the Windows one, there are a bunch of parameters related to size of window, location of stuff and so on...). Thanks, RUDOLF COETSEE

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ST2JS - Smalltalk to Javascript translator
by Gerardo Richarte 03 Aug '06

03 Aug '06

Hola Diego! this is genial! > To use the network from JS in browsers, you have to hack over a HTTP > requests to a web server. Plain sockets are just not available for JS > code. That's one and the most standard way, you can also try using the HTTPXMLRequest, a trusted ActiveX object which can be used from Internet Explorer, Mozilla, etc. Works in windows and unix, and AFAIK Ajax heavily uses it. I think this HTTPXMLRequest will be more and more standard, as more web applications start using it. And XML is not a bad option... However, for security restrictions, most connections you'll be able to open will be limited to the originating host. > Firing processes from javascript (in browsers) is, AFAIK, not posible. > What can be done is a type of multithreading for javascript processes > (see: http://slipwave.info/#js.cps.Thread) You could open new windows or iframes or something. I think this effectively work on different native processes/threads. This sounds like science fiction :-) gera

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Fwd: [V3dot9] #7049
by Stéphane Ducasse 03 Aug '06

03 Aug '06

Begin forwarded message: > From: Marcus Denker <denker(a)iam.unibe.ch> > Date: 2 août 2006 18:33:43 HAEC > To: "3.9 Squeak" <v3dot9(a)lists.squeakfoundation.org> > Subject: [V3dot9] #7049 > > Hi, > > 7049 > ----- > - updated SUnit > - fixed overrides Services > - make sure all methods are restarted > - recompile some methods / tests for properties (Klaus) > - fix for methodFinder to work with RB AST (Math) > _______________________________________________ > V3dot9 mailing list > V3dot9(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/v3dot9

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Help with FFI structure pointer
by Ron Teitelbaum 03 Aug '06

03 Aug '06

All, I'm sure someone saw this coming. I could use some help. Ok I built a structure but the use of the structure is kinda odd. What I need to do is pass the structure in as null for the first call. Then I need to pass the real structure in for subsequent calls. Finally I need to free the structure through the API using the structure pointer. I handled the first two problems by implementing <apicall: MyStruct 'MyAPICall' (long) module: 'my.dll'> and sending in nil. And <apicall: MyStruct 'MyAPICall' (MyStruct) module: 'my.dll'> <- this is so cool! I assume that Andreas wrote this code, it is beautiful! Ok now here it the problem: I have to call <apicall: void 'FreeContext' (MyStruct *) module: 'my.dll'> or something. The pointer needs to be sent to the apicall. Did I do this correctly (using MyStruct *) and it just doesn't work or is there another way to get the handle of the structure. The structure itself has a handle ivar but it's a byteArray. The result using MyStruct * is: --------------------------------------------------------------------- Tue Aug 01 14:28:54 2006 Exception code: C0000005 ============ which appears to be a buffer overrun: // MessageId: STATUS_ACCESS_VIOLATION // // MessageText: // // The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s". // #define STATUS_ACCESS_VIOLATION ((NTSTATUS)0xC0000005L) // winnt ============ Exception addr: 77A8CE7E Access violation (read access) at 0000000D EAX:000C04E0 EBX:7C809794 ECX:00000000 EDX:00000001 ESI:00000001 EDI:000C04E0 EBP:0006FB80 ESP:0006FB74 EIP:77A8CE7E EFL:00210202 FP Control: FFFF037F FP Status: FFFF4000 FP Tag: FFFFFFFF VM Version: Squeak 3.7.1 (release) from Sep 23 2004 Compiler: gcc 2.95.2 19991024 (release) Current byte code: 225 Primitive index: 120 Loaded plugins: SoundGenerationPlugin 23 September 2004 (i) SoundPlugin 23 September 2004 (i) crypt32.dll SqueakFFIPrims 23 September 2004 (e) ZipPlugin 23 September 2004 (i) SocketPlugin 23 September 2004 (i) DSAPrims 23 September 2004 (i) UUIDPlugin 23 September 2004 (i) LargeIntegers v1.3 23 September 2004 (i) Matrix2x3Plugin 23 September 2004 (i) FloatArrayPlugin 23 September 2004 (i) B2DPlugin 23 September 2004 (i) BitBltPlugin 23 September 2004 (i) SecurityPlugin 23 September 2004 (i) FilePlugin 23 September 2004 (i) MiscPrimitivePlugin 23 September 2004 (i) Stack dump: 619600144 Win32FFICertificateStore>freeCertContext 619599740 Win32FFICertificateStore>? . Thank you for any help! Ron Teitelbaum

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ToolBuilder Gtk backend
by Bruno Luca 03 Aug '06

03 Aug '06

Hello, i was looking at ToolBuilder classes and at the Morphic implementation. Is it a good choice to create a Gtk frontend to the toolset? Will be ToolBuilder kept for Squeak 3.9 final? Bye. -- www.lethalman.net - Thoughts about internet technologies

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ST2JS - Smalltalk to Javascript translator
by Gerardo Richarte 02 Aug '06

02 Aug '06

Caig dijo: > Oh, by "spawning host processes" I just meant starting an application > on the host from JavaScript. > > The only legal way to do it is through plugins and ActiveX. Of course ActiveX are restricted to windows, and plugins must be compiled for every platform. The "illegal" ways to do it are by exploiting security vulnerabilities (also platform and browser dependent), but the truth is that although this can be done almost reliably, the vulnerabilities are fixed quite quick (months), and you'll have to be running after new vulnerabilities all the time, and competing with spammers for them... not a profitable option :-) gera

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Include VM changes into an external plugin
by Bruno Luca 02 Aug '06

02 Aug '06

Hello, SqueakGtk, and i guess wxSqueak too, need Andreas Raab's changes related to callbacks. Those changes are made inside the VM interpreter i've seen (sorry if i'm wrong), is there a way to include them externally if they won't be merged into Squeak 3.9? Bye. -- www.lethalman.net - Thoughts about internet technologies

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Condensed Sources vs. Squeak Maintainence
by Peace Jerome 02 Aug '06

02 Aug '06

Hi all, I've noticed that condensing sources is on the todo list of the 3dot9 gamma push. One of the deliverables with 3dot9 final should be a 3.10 with all changes from 3.0. As one who looks into squeak code for understanding I have found that the full version history really speeds tracking down bugs. Often it is the only good way to discover the programers intent. It is also important to know how many have mucked in a particular piece of code. A large number of cooks is one of the smell tests for troubled code. So I am very concerned that 3.9 gamma might lose all this information when the sources get created anew. It seems to me poor timing to do it at the end of the development cycle. A better plan IMHO would be to bring out 3.9 without compressing the sources. Then compress sources as the first (and possibly last step) of a 3.10. If you choose to do only source compression for 3.10 you would have an adoptable squeak; and a fall back to 3.9 with the full history around for maintainence sake. With both 3.9 and 3.10 representing the same point of development you would not have to do 3.9 full. You would do 3.10 full. And if you ran into problems you could check it against 3.9 full and get your insights that way. That makes more sense. The numbering even suggest a major point. (Or you could call the compressed source version 4.0 and let the spoon version be 5.0). I believe a great deal of code will rot and squeak will become a lot more fragile than it already is if you compress sources now before 3.9 is finalized. Thank you for your attention to these concerns. Yours in service, -- Jerome Peace "Version numbers are cheap. It is patience that is precious." __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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