February 2010 - Pharo-dev - lists.pharo.org

[Pharo-project] RBAbstractClass>>isAbstract

by Fernando olivero

Lukas, do you think the second statement in this method could be removed, it would take a lot less time to know if a class is abstract. RBAbstractClass>>isAbstract (self whichSelectorsReferToSymbol: #subclassResponsibility) isEmpty ifFalse: [^true]. model allReferencesToClass: self do: [:each | ^false]. ^true I know it would change the definition of what is an abstract class for RB, but i'm just wondering if this is ok: "A Class is abstract if it defines a subclassResponsibility method and no other classes reference it" The second clause in my opinion could be avoided. Maybe it would be better to separate this method into: RBAbstractClass>>isAbstract ^ (self whichSelectorsReferToSymbol: #subclassResponsibility) notEmpty RBAbstractClass>>isUnreferenced model allReferencesToClass: self do: [:each | ^false]. ^true Thanks, Fernando

Feb. 10, 2010

Re: [Pharo-project] [squeak-dev] File out as Ruby - Possible ?

by Mariano Martinez Peck

On Wed, Feb 10, 2010 at 7:53 PM, Stefan Marr <pharo(a)stefan-marr.de> wrote: > > On 10 Feb 2010, at 17:34, Lukas Renggli wrote: > > > Have a look at the RB AST. You can traverse the AST similar to the > > pretty-printer that is included (RBFormatter and > > RBConfigurableFormatter) and instead emit Ruby. I've done something > > similar for Javascript, and others have done it for other languages. > Since it is already on-topic: Is there something which exports my nice > Smalltalk code to some approximate, maybe even with holes, representation in > Java code? > > This is all I know: http://www.squeaksource.com/Smalltalk2Java.html http://bergel.eu/download/TranslatingSmalltalkToJava.pdf http://www.info.ucl.ac.be/~jbrichau/javaconnect.html > Thanks > Stefan > > > > > > Lukas > > > > On 10 February 2010 16:51, CÃ©drick BÃ©ler <cdrick65(a)gmail.com> wrote: > >> Hi, > >> > >> Do you know if it's possible to export smalltalk code in ruby ? > >> I have to port a small app I did and so, it could help me :) > >> > >> I don't think there's an existing tool, but maybe some directions... > >> Actually, I'd prefer writing a simple tool to do that rather than > >> doing all by hand. > >> > >> I don't expect it to work out of the box, but just save me some time. > >> > >> TIA > >> > >> -- > >> CÃ©drick > >> > >> > > > > > > > > -- > > Lukas Renggli > > http://www.lukas-renggli.ch > > > > _______________________________________________ > > Pharo-project mailing list > > Pharo-project(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > -- > Stefan Marr > Software Languages Lab > Vrije Universiteit Brussel > Pleinlaan 2 / B-1050 Brussels / Belgium > http://soft.vub.ac.be/~smarr <http://soft.vub.ac.be/%7Esmarr> > Phone: +32 2 629 3956 > Fax: +32 2 629 3525 > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

Feb. 10, 2010

Re: [Pharo-project] OpenGL in pharo?

by laurent laffont

Hi, I've just tried on Archlinux with Squeak-3.11.3.2135 VM from pharo website and it works (not with Exupery VM). Laurent Laffont 2010/2/10 Javier PimÃ¡s <elpochodelagente(a)gmail.com> > Fernando, > thanks for the tips. I read about lumiere before, but I'm not > looking for a complete 3d framework, just the opengl wrappers to do some > experiments. A complete framework would be too much for what I want to try > (hw acelerated 2d animations). Anyway, your pdf gave me a better idea of the > status of all the available projects. > > As of Croquet, yes, someone decoupled the OpenGL part (which is the same I > tested yesterday and depends on Ballon3D). I finally was able to load it in > pharo! If anyone is interested here are the steps: > > Take a pharo image (mine had FFI and VMMaker already loaded, I don't know > if they were needed at all) > > In monticello add squeaksource.com/Balloon3D. Open it and load just this > packages in order: Balloon3D-constants, Balloon3D-kernel, Balloon3D-math. > > Now add squeaksource.com/OpenGL and load it. > > That's all to load it, to try it, doit this code, and when you get errors > change occurrences of Smalltalk to SmalltalkImage current. > > > ogl := OpenGL newIn: (0@0 extent: 300@300). > green := 1. > canvas := OGLCanvas new initialize: ogl. > fade:= 0. > > 1000 timesRepeat: [ > ogl glClearColor:0 with: fade with: 0 with: 1. > ogl glClear: 16r4000. > ogl swapBuffers. > fade := fade + 0.001. > ]. > > fade := 0. > > > I think the best way would be to use AlienOpenGL, which is the future, but > for that I'll have to wait alien support in linux. > > Regards, > Javier. > > 2010/2/10 Fernando olivero <oliverof(a)lu.unisi.ch> > >> Hola Javier, on top of AlienOpenGL , which is just an interface to >> OpenGL, i've built a 3d framework with better abstractions called Lumiere. ( >> http://www.inf.usi.ch/phd/olivero/LumierePage.html (A little bit >> outdated...i've added a couple of more things recently..) >> >> In this paper that we presented at the last ESUG/IWST 09 , with also did >> brief survey of OpenGL in smalltalk. ( >> www.esug.org/data/ESUG2009/IWST/iwst09_submission_6.pd) >> >> If there's a plugin for AlienFFI for Linux i'm not sure. But have you >> tried the FFI binding of OGL of Croquet? That one works in Linux. Look in >> squeaksource, because i remember someone decoupled the OGL wrapper from >> Croquet and put it there. >> >> I dont know if June ( for visual works) works in linux, but you could take >> a look of it. >> >> >> >> >> Saludos, >> Fernando >> >> >> On Feb 10, 2010, at 3:01 AM, Javier PimÃ¡s wrote: >> >> Hi, I've been browsing the different ways to use OpenGL in pharo and >> squeak. Here is a log of the results: >> >> 1 - Baloon3D - It looks like a layer on which squeaksource.com/OpenGLstands, so to use opengl you load balloon3d, then opengl and if you have the >> Balloon3dPlugin available then you can use OpenGL. This seems to include >> code dated from 2007/before. It loads fine in Squeak but in pharo I get many >> errors (load balloon3d-all in pharo1.0 rc2). >> >> 2 - GLMorphic - It uses FFI, so no plugin is needed, but it seems to be >> programmed only for windows, and I'm working in linux now. >> >> 3 - AlienOpenGL - It uses the new Alien FFI, which is only available in >> Mac platform. >> >> So, the question is: is there any way to play with OpenGL in pharo on >> linux platform ? >> >> Regards, >> Javier. >> >> -- >> Javier PimÃ¡s >> Ciudad de Buenos Aires >> <ATT00001..txt> >> >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> > > > > -- > Javier PimÃ¡s > Ciudad de Buenos Aires > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

Feb. 10, 2010

Re: [Pharo-project] OpenGL in pharo?

by Schwab,Wilhelm K

Interesting that Ubuntu turns out to be the trouble spot. I take no joy in that, because I have found Ubuntu to be a good platform for me, but the "now it works, now it's broken again" vpn and a few other snags have me casually looking at other distributions. Mandriva looks interesting based on a LiveCD. As always, recommendations (both positive and negative) are welcome. One thing lacking (when I last looked) was an Alien plugin for Linux. There is a configuration for VMMaker, but I have been too busy to get much beyond noticing that. Bill ________________________________ From: pharo-project-bounces(a)lists.gforge.inria.fr [mailto:pharo-project-bounces@lists.gforge.inria.fr] On Behalf Of Eliot Miranda Sent: Wednesday, February 10, 2010 1:11 PM To: Pharo-project(a)lists.gforge.inria.fr Cc: Ryan Macnak Subject: Re: [Pharo-project] OpenGL in pharo? 2010/2/10 Javier PimÃ¡s <elpochodelagente(a)gmail.com<mailto:elpochodelagente@gmail.com>> Fernando, thanks for the tips. I read about lumiere before, but I'm not looking for a complete 3d framework, just the opengl wrappers to do some experiments. A complete framework would be too much for what I want to try (hw acelerated 2d animations). Anyway, your pdf gave me a better idea of the status of all the available projects. As of Croquet, yes, someone decoupled the OpenGL part (which is the same I tested yesterday and depends on Ballon3D). I finally was able to load it in pharo! If anyone is interested here are the steps: Take a pharo image (mine had FFI and VMMaker already loaded, I don't know if they were needed at all) In monticello add squeaksource.com/Balloon3D<http://squeaksource.com/Balloon3D>. Open it and load just this packages in order: Balloon3D-constants, Balloon3D-kernel, Balloon3D-math. Now add squeaksource.com/OpenGL<http://squeaksource.com/OpenGL> and load it. That's all to load it, to try it, doit this code, and when you get errors change occurrences of Smalltalk to SmalltalkImage current. ogl := OpenGL newIn: (0@0 extent: 300@300). green := 1. canvas := OGLCanvas new initialize: ogl. fade:= 0. 1000 timesRepeat: [ ogl glClearColor:0 with: fade with: 0 with: 1. ogl glClear: 16r4000. ogl swapBuffers. fade := fade + 0.001. ]. fade := 0. I think the best way would be to use AlienOpenGL, which is the future, but for that I'll have to wait alien support in linux. The alien code should "just work" on linux, but subtleties in alloca mean it crashes on e.g. Ubuntu. But Ryan Macnak juts got the AlienFFI working in Newspeak on Ubuntu. I think what's happened is that recent Linux gcc versions increase the stack alignment to 16 bytes to support x86 sse2 instructions, where 16 byte alignment is required to avoid alignment violations using 128-bit transfers to/from the xmm registers. So in platforms/Cross/plugins/ia32abicc.c where it states #if __APPLE__ && __MACH__ && __i386__ # define STACK_ALIGN_BYTES 16 #endif this should probably read #if ((__APPLE__ && __MACH__) || __linux__) && __i386__ # define STACK_ALIGN_BYTES 16 #endif Give it a go and you should find the AlienFFI will work on linux. Regards, Javier. 2010/2/10 Fernando olivero <oliverof(a)lu.unisi.ch<mailto:oliverof@lu.unisi.ch>> Hola Javier, on top of AlienOpenGL , which is just an interface to OpenGL, i've built a 3d framework with better abstractions called Lumiere. (http://www.inf.usi.ch/phd/olivero/LumierePage.html (A little bit outdated...i've added a couple of more things recently..) In this paper that we presented at the last ESUG/IWST 09 , with also did brief survey of OpenGL in smalltalk. (www.esug.org/data/ESUG2009/IWST/iwst09_submission_6.pd<http://www.esug.org/data/ESUG2009/IWST/iwst09_submission_6.pd>) If there's a plugin for AlienFFI for Linux i'm not sure. But have you tried the FFI binding of OGL of Croquet? That one works in Linux. Look in squeaksource, because i remember someone decoupled the OGL wrapper from Croquet and put it there. I dont know if June ( for visual works) works in linux, but you could take a look of it. Saludos, Fernando On Feb 10, 2010, at 3:01 AM, Javier PimÃ¡s wrote: Hi, I've been browsing the different ways to use OpenGL in pharo and squeak. Here is a log of the results: 1 - Baloon3D - It looks like a layer on which squeaksource.com/OpenGL<http://squeaksource.com/OpenGL> stands, so to use opengl you load balloon3d, then opengl and if you have the Balloon3dPlugin available then you can use OpenGL. This seems to include code dated from 2007/before. It loads fine in Squeak but in pharo I get many errors (load balloon3d-all in pharo1.0 rc2). 2 - GLMorphic - It uses FFI, so no plugin is needed, but it seems to be programmed only for windows, and I'm working in linux now. 3 - AlienOpenGL - It uses the new Alien FFI, which is only available in Mac platform. So, the question is: is there any way to play with OpenGL in pharo on linux platform ? Regards, Javier. -- Javier PimÃ¡s Ciudad de Buenos Aires <ATT00001..txt> _______________________________________________ Pharo-project mailing list Pharo-project(a)lists.gforge.inria.fr<mailto:Pharo-project@lists.gforge.inria.fr> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project -- Javier PimÃ¡s Ciudad de Buenos Aires _______________________________________________ Pharo-project mailing list Pharo-project(a)lists.gforge.inria.fr<mailto:Pharo-project@lists.gforge.inria.fr> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

Feb. 10, 2010

Re: [Pharo-project] [squeak-dev] File out as Ruby - Possible ?

by Stefan Marr

On 10 Feb 2010, at 17:34, Lukas Renggli wrote: > Have a look at the RB AST. You can traverse the AST similar to the > pretty-printer that is included (RBFormatter and > RBConfigurableFormatter) and instead emit Ruby. I've done something > similar for Javascript, and others have done it for other languages. Since it is already on-topic: Is there something which exports my nice Smalltalk code to some approximate, maybe even with holes, representation in Java code? Thanks Stefan > > Lukas > > On 10 February 2010 16:51, CÃ©drick BÃ©ler <cdrick65(a)gmail.com> wrote: >> Hi, >> >> Do you know if it's possible to export smalltalk code in ruby ? >> I have to port a small app I did and so, it could help me :) >> >> I don't think there's an existing tool, but maybe some directions... >> Actually, I'd prefer writing a simple tool to do that rather than >> doing all by hand. >> >> I don't expect it to work out of the box, but just save me some time. >> >> TIA >> >> -- >> CÃ©drick >> >> > > > > -- > Lukas Renggli > http://www.lukas-renggli.ch > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project -- Stefan Marr Software Languages Lab Vrije Universiteit Brussel Pleinlaan 2 / B-1050 Brussels / Belgium http://soft.vub.ac.be/~smarr Phone: +32 2 629 3956 Fax: +32 2 629 3525

Feb. 10, 2010

Re: [Pharo-project] [squeak-dev] File out as Ruby - Possible ?

by CÃ©drick BÃ©ler

Lots of useful pointer... Thanks a lot Lukas... > > That's not what you want. Ruby classes look very different to > Smalltalk class definitions. I would do something like: > > env := BrowserEnvironment new forPackageNames: #('MyPackage'). > env classesDo: [ :class | > Â Â stream := FileStream on: class name , '.rb'. > Â Â " write header of class definition for 'class' " > Â Â env selectorsForClass: class do: [ :selector | > Â Â Â tree := class parseTreeFor: selector. > Â Â Â RubyFormatter format: tree on: stream ]. > Â Â " write footer of class definition for 'class' " > Â Â stream close ] > > Lukas > > -- > Lukas Renggli > http://www.lukas-renggli.ch > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > -- CÃ©drick

Feb. 10, 2010

Re: [Pharo-project] [squeak-dev] File out as Ruby - Possible ?

by Lukas Renggli

> From what I've guessed I need to create my own formatter > (RubyFormatter) by basically rewriting all private-formating methods > (am I right here ?). You can't probably reuse anything. I would just subclass RBProgramNodeVisitor and implement all the #accept* methods. RBFormatter is just an example of how that can be done. > Then, I use the parser and the RubyFormatter. But what I want is > export a package, ie. classes with their methods and extension > methods. I can't parse directly a full class nor a package... can I > directly ? I guess not Yeah, that only converts a single method. > So I need to parse each class definition (and class class definition), > format them, Â then parse/format each method source (probably better to > get the code expressions from the MCWorkingCopy or PackageInfo I > guess)... > > RBParser parseExpression: MyClass definition. That's not what you want. Ruby classes look very different to Smalltalk class definitions. I would do something like: env := BrowserEnvironment new forPackageNames: #('MyPackage'). env classesDo: [ :class | stream := FileStream on: class name , '.rb'. " write header of class definition for 'class' " env selectorsForClass: class do: [ :selector | tree := class parseTreeFor: selector. RubyFormatter format: tree on: stream ]. " write footer of class definition for 'class' " stream close ] Lukas -- Lukas Renggli http://www.lukas-renggli.ch

Feb. 10, 2010

[Pharo-project] [update 1.1] #11200

by StÃ©phane Ducasse

11200 ----- - Issue 1922: use #forceNewFileNamed:do: pattern (part one) - Issue 1946: Enhanced Polymorph Tool diff from barcelona at citilab :)

Feb. 10, 2010

Re: [Pharo-project] [squeak-dev] File out as Ruby - Possible ?

by CÃ©drick BÃ©ler

Ok here are some questions to see if I'm on the right track. >From what I've guessed I need to create my own formatter (RubyFormatter) by basically rewriting all private-formating methods (am I right here ?). Then, I use the parser and the RubyFormatter. But what I want is export a package, ie. classes with their methods and extension methods. I can't parse directly a full class nor a package... can I directly ? I guess not So I need to parse each class definition (and class class definition), format them, then parse/format each method source (probably better to get the code expressions from the MCWorkingCopy or PackageInfo I guess)... RBParser parseExpression: MyClass definition. Then something like: methodsRefs do: [:mr | RBParser parseMethod: mr sourceCode] ... I'll try later but if you have any comments... :) TIA CÃ©drick

Feb. 10, 2010

Re: [Pharo-project] OpenGL in pharo?

by Eliot Miranda

2010/2/10 Javier PimÃ¡s <elpochodelagente(a)gmail.com> > Fernando, > thanks for the tips. I read about lumiere before, but I'm not > looking for a complete 3d framework, just the opengl wrappers to do some > experiments. A complete framework would be too much for what I want to try > (hw acelerated 2d animations). Anyway, your pdf gave me a better idea of the > status of all the available projects. > > As of Croquet, yes, someone decoupled the OpenGL part (which is the same I > tested yesterday and depends on Ballon3D). I finally was able to load it in > pharo! If anyone is interested here are the steps: > > Take a pharo image (mine had FFI and VMMaker already loaded, I don't know > if they were needed at all) > > In monticello add squeaksource.com/Balloon3D. Open it and load just this > packages in order: Balloon3D-constants, Balloon3D-kernel, Balloon3D-math. > > Now add squeaksource.com/OpenGL and load it. > > That's all to load it, to try it, doit this code, and when you get errors > change occurrences of Smalltalk to SmalltalkImage current. > > > ogl := OpenGL newIn: (0@0 extent: 300@300). > green := 1. > canvas := OGLCanvas new initialize: ogl. > fade:= 0. > > 1000 timesRepeat: [ > ogl glClearColor:0 with: fade with: 0 with: 1. > ogl glClear: 16r4000. > ogl swapBuffers. > fade := fade + 0.001. > ]. > > fade := 0. > > > I think the best way would be to use AlienOpenGL, which is the future, but > for that I'll have to wait alien support in linux. > The alien code should "just work" on linux, but subtleties in alloca mean it crashes on e.g. Ubuntu. But Ryan Macnak juts got the AlienFFI working in Newspeak on Ubuntu. I think what's happened is that recent Linux gcc versions increase the stack alignment to 16 bytes to support x86 sse2 instructions, where 16 byte alignment is required to avoid alignment violations using 128-bit transfers to/from the xmm registers. So in platforms/Cross/plugins/ia32abicc.c where it states #if __APPLE__ && __MACH__ && __i386__ # define STACK_ALIGN_BYTES 16 #endif this should probably read #if ((__APPLE__ && __MACH__) || __linux__) && __i386__ # define STACK_ALIGN_BYTES 16 #endif Give it a go and you should find the AlienFFI will work on linux. > Regards, > Javier. > > 2010/2/10 Fernando olivero <oliverof(a)lu.unisi.ch> > >> Hola Javier, on top of AlienOpenGL , which is just an interface to >> OpenGL, i've built a 3d framework with better abstractions called Lumiere. ( >> http://www.inf.usi.ch/phd/olivero/LumierePage.html (A little bit >> outdated...i've added a couple of more things recently..) >> >> In this paper that we presented at the last ESUG/IWST 09 , with also did >> brief survey of OpenGL in smalltalk. ( >> www.esug.org/data/ESUG2009/IWST/iwst09_submission_6.pd) >> >> If there's a plugin for AlienFFI for Linux i'm not sure. But have you >> tried the FFI binding of OGL of Croquet? That one works in Linux. Look in >> squeaksource, because i remember someone decoupled the OGL wrapper from >> Croquet and put it there. >> >> I dont know if June ( for visual works) works in linux, but you could take >> a look of it. >> >> >> >> >> Saludos, >> Fernando >> >> >> On Feb 10, 2010, at 3:01 AM, Javier PimÃ¡s wrote: >> >> Hi, I've been browsing the different ways to use OpenGL in pharo and >> squeak. Here is a log of the results: >> >> 1 - Baloon3D - It looks like a layer on which squeaksource.com/OpenGLstands, so to use opengl you load balloon3d, then opengl and if you have the >> Balloon3dPlugin available then you can use OpenGL. This seems to include >> code dated from 2007/before. It loads fine in Squeak but in pharo I get many >> errors (load balloon3d-all in pharo1.0 rc2). >> >> 2 - GLMorphic - It uses FFI, so no plugin is needed, but it seems to be >> programmed only for windows, and I'm working in linux now. >> >> 3 - AlienOpenGL - It uses the new Alien FFI, which is only available in >> Mac platform. >> >> So, the question is: is there any way to play with OpenGL in pharo on >> linux platform ? >> >> Regards, >> Javier. >> >> -- >> Javier PimÃ¡s >> Ciudad de Buenos Aires >> <ATT00001..txt> >> >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> > > > > -- > Javier PimÃ¡s > Ciudad de Buenos Aires > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

Feb. 10, 2010