Squeak-dev November 2008

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119 participants
135 discussions

Re: [squeak-dev] Getting rid of Display global
by Boris Popov 08 Nov '08

08 Nov '08

Isn't there a rewrite tool for Squeak? Cheers! -Boris (via BlackBerry) ----- Original Message ----- From: squeak-dev-bounces(a)lists.squeakfoundation.org <squeak-dev-bounces(a)lists.squeakfoundation.org> To: The general-purpose Squeak developers list <squeak-dev(a)lists.squeakfoundation.org> Sent: Sat Nov 08 09:26:05 2008 Subject: [squeak-dev] Getting rid of Display global I'd like to ask, is there any ways to automatically replace all references to some global ( Display, for instance) with message send and recompile all modified methods accordingly. In OB i saw some ways to manipulate with code on AST level, where it can clearly tell that Display is global. I tried to do a global text search & replace , but its quite inconvenient, because it still leaves a lot of manual work. The most bigger issues with textual replace is, that if you replace 'Display' with 'self getDisplay' in 'DisplayScreen' , you will get 'self getDisplayScreen' :) It is possible, of course to write a clever regex pattern to avoid such situations, but again, what if i don't want to touch comments? Another thing is assignment - with AST on hand, it can clearly tell, if you need to replace an assignment with setter message send, while if you doing a textual replace you have to deal with it by writing another regex. And finally, replacing using AST will guarantee that method will be compiled under any circumstances. Can anyone tell me, or show some code snippets, how to do this using OB? I found a lot of different refactoring features in OB, but can't find an easy way to do what i need. -- Best regards, Igor Stasenko AKA sig.

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Getting rid of Display global
by Igor Stasenko 08 Nov '08

08 Nov '08

I'd like to ask, is there any ways to automatically replace all references to some global ( Display, for instance) with message send and recompile all modified methods accordingly. In OB i saw some ways to manipulate with code on AST level, where it can clearly tell that Display is global. I tried to do a global text search & replace , but its quite inconvenient, because it still leaves a lot of manual work. The most bigger issues with textual replace is, that if you replace 'Display' with 'self getDisplay' in 'DisplayScreen' , you will get 'self getDisplayScreen' :) It is possible, of course to write a clever regex pattern to avoid such situations, but again, what if i don't want to touch comments? Another thing is assignment - with AST on hand, it can clearly tell, if you need to replace an assignment with setter message send, while if you doing a textual replace you have to deal with it by writing another regex. And finally, replacing using AST will guarantee that method will be compiled under any circumstances. Can anyone tell me, or show some code snippets, how to do this using OB? I found a lot of different refactoring features in OB, but can't find an easy way to do what i need. -- Best regards, Igor Stasenko AKA sig.

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SparseLargeTable
by Eliot Miranda 08 Nov '08

08 Nov '08

Hi All, SparseLargeTable appears not to be sparse at all. If you look at SparseLargeTable>>initChunkSize:size:arrayClass:base:defaultValue: you'll see tat each bin is initialized with an instance of the base class rather than being filled lazily. Further, instead of pvtNoCheckAt:put: lazily creating an entry in each bin as needed it simply throws away the write if the bin is empty. Instead the usage pattern is to create fully-populated instances and then make them sparse by sending zapDefaultOnlyEntries. It seems to me that SparseLargeTable>>initChunkSize:size:arrayClass:base:defaultValue: should leave bins empty until pvtNoCheckAt:put: puts other than the default value. Since I want to create a sparse table with 2^32 entries the existing approach won't work. I wondered whether anyone else had already fixed this or whether there's a good reason not to lazily initialize. Best Eliot

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Strange primitives doing nothing
by Igor Stasenko 07 Nov '08

07 Nov '08

I'm exploring the exception support in VM, and found two strange primitives used by BlockClosure, which simply fail and doing nothing. primitiveMarkUnwindMethod "Primitive. Mark the method for exception unwinding. The primitive must fail after marking the context so that the regular code is run." self inline: false. ^self primitiveFail primitiveMarkHandlerMethod "Primitive. Mark the method for exception handling. The primitive must fail after marking the context so that the regular code is run." self inline: false. ^self primitiveFail Any ideas, why they still in use? Can there be something in between, when interpreter enters the method? Or, if nothing, then why they still there? :) -- Best regards, Igor Stasenko AKA sig.

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Defer updates & drawings
by Igor Stasenko 07 Nov '08

07 Nov '08

Hello list, from first time i tried to understand the logic of deferring updates in Display & PasteUpMorph code and i'm still confused. Things how i understand it is following: you can ask VM to defer updates of screen. In deferred mode all drawing operations should not appear immediately on screen. But once you disable it, you can force portion of screen to be updated by using #forceToScreen: message. What is interesting that you can force to update a portion of screen regardless being in deferred more or not, and it will update the window immediately. Deferred mode implies, that somewhere under the hood, VM or OS keeping an offscreen surface in operative memory and then will use it to draw/swap on screen in single shot. Now, second thing, if you look through code, how PasteUpMorph works with Display, it acquring an #assuredCanvas , which in own turn makes sure it gets new, fresh __offscreen__ form , having same dimensions as current Display to draw into it. Is it only me who think that two offscreen surfaces (one at language side, second at VM side) is a bit overkill? -- Best regards, Igor Stasenko AKA sig.

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[ANN][Dev-Images] November 2008 versions
by Damien Cassou 07 Nov '08

07 Nov '08

Hi, I've just uploaded new squeak-dev and squeak-web images based on Squeak3.9.1-7075, Squeak3.10.2-7179 and Pharo0.1-10133. More information and download: http://damiencassou.seasidehosting.st/Smalltalk/squeak-dev Pharo-based images can be downloaded at: http://code.google.com/p/pharo/wiki/Downloads?tm=2 Download statistics at http://damiencassou.dabbledb.com/publish/dev-imagesdownloads Changes in this version: --------------------------- - New website: http://damiencassou.seasidehosting.st/Smalltalk/ - Pharo images are based on version 10133. - Massive refactoring of Installer (thanks to Matthew Fulmer) - Pier and Magritte has been updated (thanks to Lukas Renggli) - Searching of package in the Universe Browser enhanced is fixed (thanks to Dan Corneanu) - David Röthlisberger didn't sleep this month, here are his changes to the OmniBrowser: - Improved usability and performance of tree-related functionality (eg. switching from package to hierarchy view) - Improved mercury search (helper text, eCompletion, case-insensitive search, better usability) - Show class comment question mark in "instance / ? / class" switch in red if class doesn't have a comment - Added a command to move classes to other packages - Merged OB-SUnitIntegration into OB-Enhancements - Several minor enhancements - Corrected various defects related to new tree-view used in package column - Cleaned, refactored code - General bug fixing I was not able to generate a pharo-web this month, sorry. Contained packages: ------------------------ This image contains the following packages (some packages are only in the squeak-web image or beta images): Aida version 5.6 Algernon version 1.2 AST version 160 AutomaticMethodCategorizer version 0.25 AutomaticMethodCategorizerOB version 0.2 DynamicBindings version 2.7 eCompletion version 0.91 eCompletion-Traits version 0.1 eCompletionOmniBrowser version 0.5 Installer version 4.2 KomHttpServer version 7.0.30 KomServices version 1.12 Magritte-Model version 1.0.17.331 Magritte-Morph version 1.0.17.42 Magritte-Seaside version 1.0.17.278 Magritte-Tests version 1.0.17.148 OB-Enhancements version 0.247 OmniBrowser version 0.426 OmniBrowser-Algernon version 0.5 OmniBrowser-Full version 0.27 OmniBrowser-Morphic version 0.61 OmniBrowser-Refactory version 108 OmniBrowser-Regex version 0.9.1 OmniBrowser-Standard version 0.369 Pier version current Pier-Blog version 1.0.17.90 Pier-Documents version 1.0.17.7 Pier-EditorEnh version 1.0.17.16 Pier-Model version 1.0.17.238 Pier-OmniBrowser version 1.0.17.34 Pier-Seaside version 1.0.17.311 Pier-Security version 1.0.17.113 Pier-Tests version 1.0.17.104 Polymorph EventEnhancements version 1.0 Polymorph Geometry version 1.0 Polymorph TaskbarIcons version 1.0 Polymorph ToolBuilder version 1.0 Polymorph Tools Diff version 1.0 Polymorph Widgets version 1.0 Refactoring Core version 11 RoelTyper version 0.60 RSRSS2 version 2.8.3.11 Scriptaculous version 2.8.3.242 ScriptManager version 0.6 Seaside version 2.8.3.572 Seaside-Adapters-Core version pmm.2.mcz Seaside-Adapters-Swazoo version 8 Seaside-Squeak-Adapters version pmm.3.mcz SeasideAdaptersCompatibility version pmm.1.mcz Shout version 3.15-tween.72 ShoutWorkspace version 1-tween.4 SmaCC runtime version 13 Sport version 2.31 Squeak dev packages version 0.27 Squeak dev packages beta version 0.32 Squeak web packages version 0.2 SUnit-improved version 4.0.113 SUnitGUI-improved version 4.0.50 Swazoo version 2.1 Universes version 50 Universes OmniBrowser version 0.38 VBRegex version 1.9 YAXO version 9 " Updating the image: ------------------------- You are not obliged to download a new image if you don't want. You can always update your image. To upgrade your already existing squeak-dev image: 1) World menu->open...->Package Universe Browser 2) Update list from network 3) Select all upgrades 4) Install selection 5) Execute: 'DEVImageCreator default install' (all windows will be closed) Prepared packages: -------------------------- There are a lot of packages prepared for you in this image. They are not loaded in the image, but they can be easily. - Open Package Universe Browser (world->open...->Package Universe Browser). - Click on "Update list from network" - Wait a few seconds - Select your packages - Install them -- Damien Cassou http://damiencassou.seasidehosting.st

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MySQL driver can't convert; I can't debug
by Tim Johnson 07 Nov '08

07 Nov '08

Hi, Using latest Mysql-Driver from Package Universe on 3.10.2-7179, Mac Intel, vm 3.8.19beta1U. Jdm's Mysql-Driver is trying to convert the SQL date value "0000-00-00" to a TimeStamp but fails. The Date value in JdmFieldConverter>>toTimestamp:column: does not get set correctly -- it becomes #nil. TimeStamp then does not like being passed a nil value. I am trying to debug but get a "Code simulation error" when I attempt to step "Through" (JdmDateHolder readFrom: stream) in JdmFieldConverter>>toTimestamp:column:. The "Code simulation error" lists the top of the stack as "Project class>>spawnNewProcess". Is there anything I can, or should, do? Thanks, Tim

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40th Anniversary of the Dynabook
by Brad Fuller 07 Nov '08

07 Nov '08

All, Alan, Chuck, Mary Lou and Steve did a fabulous job at the Computer History Museum's program last night. Insightful and educational as always. Alan, will you make your Squeak project available for us to review? I noticed that they were videotaping, so I assume the video will be available on the CHM youtube channel: http://www.youtube.com/computerhistory Thanks to all that made it possible! best, brad

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BUG Squeak 3.7 - Number>>printShowingDecimalPlaces:
by Patrick.Chenais＠bit.admin.ch 06 Nov '08

06 Nov '08

(I sent this message 2.11.2008, but I'm not sure it has been published. Let's try again.) 1.189159413903272e3 printShowingDecimalPlaces: 2 '1189.16' 1.189159413903272e4 printShowingDecimalPlaces: 2 '11891.59' 1.189159413903272e5 printShowingDecimalPlaces: 2 '118915.94' 1.189159413903272e6 printShowingDecimalPlaces: 2 '1.18' BUG !!! Sincerly, Patrick Chénais

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How to copy method safely?
by itsme213 06 Nov '08

06 Nov '08

I have a class C1 with method M1 (source + compiled). How do I safely make a copy of M1 in another class C2 (same source + compile)? Thanks - Sophie

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